• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This application discloses a method and apparatus of communications. The method includes: obtaining, by a terminal device, block index information of downlink synchronization signals; receiving, by the terminal device, information used to indicate an association relationship between a random access resource RO and a block of synchronization signals; and accessing, through the terminal device, a network device based on the information in an RO corresponding to the synchronization signal block index information. This application additionally discloses a corresponding apparatus. A time-frequency location of a random access resource associated with each downlink synchronization signal is indicated, so that the terminal device obtains, through downlink synchronization, a time-frequency location for sending a signal. uplink random access, to prevent a blind attempt by the terminal device and a network device beam mismatch to occur when the network device receives a random access signal, thereby improving efficiency.
    公开号:BR112019027271A2
    申请号:R112019027271-2
    申请日:2019-01-14
    公开日:2020-07-14
    发明作者:Huang Huang；Kuandong Gao；Mao Yan；Hua Shao
    申请人:Huawei Technologies Co., Ltd.；
    IPC主号:
    专利说明:

    [0001] [0001] This application claims priority to Chinese Patent Application No. 201810032285.5, filed with the National Intellectual Property Administration of China on January 12, 2018 and entitled "COMMUNICATIONS METHOD AND APPARATUS", which is incorporated here by reference in its entirety. TECHNICAL FIELD
    [0002] [0002] This application concerns the field of communications technologies, and in particular, a method and apparatus of communications. FUNDAMENTALS
    [0003] [0003] Before communicating with a terminal device, a base station must first perform uplink and downlink synchronization. During downlink synchronization, the base station sends downlink synchronization signals using a plurality of transmission beams. The terminal device receives and detects downlink synchronization signals using one or more receive beams, to obtain a pair of optimal downlink transmit and receive beams, time information and system information. The uplink synchronization is completed with the help of a random access process. The terminal device first sends a random access signal. The base station detects the random access signal to obtain a pair of optimal uplink transmit and receive beams, an uplink time, and the like to finally implement uplink synchronization between the base station and the terminal device .
    [0004] [0004] In a New Radio communications system (new radio, NR), different random access resources can be in association relationships with different beams, or a base station uses different beams to receive uplink signals on different resources random access. Therefore, different base station beams can have different base station coverage areas. The terminal devices send uplink signals or receive downlink signals in different areas. The uplink signals received by the base station or the uplink signals received by the terminal devices have different demodulation or detection performances. As shown in Figure 1, when a terminal device sends an uplink signal in a beam direction aligned with an area in which the terminal device is located, a signal received by the base station has the best demodulation or detection performance; or when a terminal device sends an uplink signal in a beam direction not aligned with an area in which the terminal device is located, a signal received by the base station has relatively low demodulation or detection performance. Therefore, when implementing uplink synchronization between the base station and the terminal device, the terminal device needs to select a suitable or optimal base station receiving beam to send an uplink signal or a transmission beam from the base station. optimal base receives a downlink signal in the random access process.
    [0005] [0005] When the terminal device performs an initial access process, the terminal device obtains first beam information from a block of downlink synchronization signals. Therefore, the downlink synchronization signal block must be in an association relationship with a random access resource. However, no solution is provided to associate a block of downlink synchronization signals with a random access resource. SUMMARY
    [0006] [0006] This application provides a communications method and apparatus for resolving a problem on how to associate a block of downlink synchronization signals to a random access resource.
    [0007] [0007] In accordance with one aspect of this application, a method of communications is provided, including: obtaining, by a terminal device, block index information of downlink synchronization signals; receive, by the terminal device, information used to indicate an association relationship between one or more random access occasions (ROs) and a block of synchronization signals; and accessing, through the terminal device, a network device based on the information in an RO corresponding to the block index information of synchronization signals; where the association relationship between an RO and a block of sync signals is at least one of the following: a number of blocks of sync signals associated with an RO is at least 1 / F, or is P at most, where F is a number of ROs in frequency domain, and P is related to a number of blocks of synchronization signals actually transmitted; and / or N blocks of synchronization signals or N groups of blocks of synchronization signals are associated with an RO in the frequency domain or with all the ROs in the frequency domain; and / or the first random-access channel, RACH resources in each X RACH Y resource configuration periods are associated with the same blocks of sync signals when a random access resource configuration period is P, where P and X are integers and Y is equal to P multiplied by X. The terminal device can obtain the downlink synchronization signal block index information as follows: The terminal device receives a block of forward signals. downlink synchronization, where the downlink synchronization signal block carries index information. In this respect, a time-frequency location of a random access resource associated with each downlink synchronization signal is indicated, so that the terminal device obtains, through downlink synchronization, a time-frequency location to send an uplink random access signal to prevent a blind attempt by the terminal device and a beam mismatch from the network device from occurring when the network device receives a random access signal, thereby improving efficiency.
    [0008] [0008] IN a possible implementation, when the association relationship is that N blocks of synchronization signals or N groups of blocks of synchronization signals are associated with an RO in the frequency domain or are associated with all ROs in the frequency domain , the method additionally includes: receiving, by the terminal device, indication information from the network device, where indication information is used to indicate that the N sync signal blocks or N groups of sync signal blocks are associated with a frequency domain RO, or are used to indicate that the N sync signal blocks or N sync signal block groups are associated with all frequency domain ROs.
    [0009] [0009] In another possible implementation, when a random access resource configuration period is P, and the first RACH resources in each X RACH resource configuration periods are associated with the same blocks of sync signals, X is received from the network device or is pre-stored; and / or Y is received from the network device or is pre-stored.
    [0010] [0010] In yet another possible implementation, a value of Y is 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, 320 ms or 640 ms.
    [0011] [0011] In yet another possible implementation, a value of X is related to a number of blocks of synchronization signals, or a value of X is related to a number of random access resources in a random access resource configuration period , or an X value is 1, 2,4,8, or 16.
    [0012] [0012] In yet another possible implementation, when a random access resource configuration period is P, and the first random access resources in each X random access resource configuration periods are associated with the same blocks of synchronization signals, if there are one or more random access resources remaining, the terminal device does not access the network device on the remaining random access resource.
    [0013] [0013] IN an additional possible implementation, when a random access resource configuration period is P, and the first random access resources in each X random access resource configuration periods are associated with the same blocks of synchronization signals, if there are one or more random access resources remaining, the one or more remaining random access resources are associated starting from the first block of sync signals or the last block of sync signals or from a next block of sync signals a block of final synchronization signals in the previous X periods, or any one or more of the three previous association relationships are used in different X periods.
    [0014] [0014] In a possible still further implementation, when the association relationship is that N blocks of sync signals or N groups of sync signals blocks are associated with an RO in the frequency domain or are associated with all ROs in the domain of frequency, if an N amount of sync signal blocks or groups of sync signal blocks actually transmitted cannot be exactly divided by an amount, configured by the network device, of sync signal blocks associated with an RO, then that a number of sync blocks or groups of sync blocks are associated with a corresponding RO, where the amount is an integer multiple of the amount configured by the network device, a remaining sync block or a group of downlink synchronization signal blocks is associated with one or more other ROs. No. 1 or above.
    [0015] [0015] IN a possible further implementation, a number of random access resources in a random access resource configuration period or in a random access resource association period is related to a number of blocks of synchronization signals or block groups of synchronization signals.
    [0016] [0016] Correspondingly, a communications device is provided and can implement the previous communications method. For example, the communications device may be a chip (such as a baseband chip or a communications chip) or a device (such as a terminal device). The communications device can implement the above method using software or hardware, or using the hardware that runs the corresponding software.
    [0017] [0017] In a possible implementation, a structure of the communications device includes a processor and a memory. The processor is configured to support the device in performing a corresponding function in the previous communications method. The memory is configured to couple with the processor, and the memory stores a program (an instruction) and / or data necessary for the device. Optionally, the communications device can additionally include a communications interface, configured to support communication between the device and another network element.
    [0018] [0018] In another possible implementation the communications apparatus may include a receiving unit and a processing unit. The receiving unit is configured to implement a receiving function in the previous method. The processing unit is configured to implement a processing function in the previous method. For example, the receiving unit is configured to receive a downlink signal, where the downlink signal carries downstream link synchronization signal block index information. The receiving unit is further configured to receive information used to indicate an association relationship between a random access RO occasion and a block of synchronization signals. The processing unit is configured to obtain the synchronization signal block index information and the association relationship between an RO random access occasion and a synchronization signal block from the receiving unit, and to access a network device in an RO corresponding to the sync signal block index information. The association relationship between an RO and a block of sync signals is at least one of the following: a number of blocks of sync signals associated with an RO is at least 1 / F, or is P at most, where F is a number of ROs in frequency domain, and P is related to a number of blocks of synchronization signals actually transmitted; and / or N blocks of synchronization signals or N groups of blocks of synchronization signals are associated with an RO in the frequency domain or with all the ROs in the frequency domain; and / or the first RACH resources in each X RACH resource configuration periods Y are associated with the same sync signal blocks when a random access resource configuration period is P, where P and X are integers and Y is equal to P multiplied by X. The processing unit can obtain the sync signal block index information as follows: The receiving unit receives a sync signal block, where the sync signal block carries information from index, and the processing unit obtains the sync signal block index information from the receiving unit.
    [0019] [0019] When the communications device is a chip, the receiving unit can be an input unit, for example, an input circuit or an input communications interface; and a sending unit can be an output unit, for example, an output circuit or an outgoing communications interface. When the communications device is a device, the receiving unit can be a receiver; and the sending unit can be a transmitter.
    [0020] [0020] In accordance with another aspect of this request, a method of communications is provided, including: sending, by a network device, block index information of downlink synchronization signals to a terminal device; send, through the network device to the terminal device, information used to indicate an association relationship between a random access resource RO and a block of synchronization signals; and receiving, by the network device, a random access signal that is sent by the terminal device in an RO corresponding to the synchronization signal block index information. In this respect, a time-frequency location of a random access resource associated with each downlink synchronization signal is indicated, so that the terminal device obtains, through downlink synchronization, a time-frequency location to send an uplink random access signal to prevent a blind attempt by the terminal device and a beam mismatch from the network device from occurring when the network device receives a random access signal, thereby improving efficiency.
    [0021] [0021] Correspondingly, a communications device is provided and can implement the previous communications method. For example, the communications device may be a chip (such as a baseband chip or a communications chip) or a device (such as a network device or a baseband processing card). The communications device can implement the above method using software or hardware, or using the hardware that runs the corresponding software.
    [0022] [0022] In a possible implementation, a structure of the communications device includes a processor and a memory. The processor is configured to support the device in performing a corresponding function in the previous communications method. The memory is configured to couple with the processor, and the memory stores a program (an instruction) and the necessary data for the device. Optionally, the communications device can additionally include a communications interface, configured to support communication between the device and another network element.
    [0023] [0023] In another possible implementation the communications apparatus may include a receiving unit and a sending unit. The receiving unit and the sending unit are configured to implement, respectively, a receiving function and a sending function in the previous method. For example, the sending unit is configured to send block index information of downlink synchronization signals to a terminal device. The sending unit is further configured to send information used to indicate an association relationship between a random access resource RO and a block of synchronization signals to the terminal device. The receiving unit is configured to receive a random access signal sent by the terminal device in an RO corresponding to the synchronization signal block index information.
    [0024] [0024] When the communications device is a chip, the receiving unit can be an input unit, for example, an input circuit or an input communications interface; and the sending unit can be an output unit, for example, an output circuit or an outgoing communications interface. When the communications device is a device, the receiving unit can be a receiver (also known as a receiver); and the sending unit can be a transmitter (also known as a transmitter).
    [0025] [0025] In accordance with yet another aspect of this request, a method of communications is provided, including: receiving, by a terminal device, first information and / or second information sent by a network device, where the first information is used to instruct sending a first uplink signal on a first time-frequency resource; and / or second information is used to instruct the sending of a second uplink signal on a second time-frequency resource; and when a third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second information, send, by the terminal device, the first uplink signal to the network device in a time-frequency resource other than the third time-frequency resource in the first time-frequency resource; or when a fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, sending the second uplink signal to the network device via the terminal device. in a time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource; or when a third time-frequency resource in the first time-frequency resource indicated by the first information overlaps a fourth time-frequency resource in the second time-frequency resource indicated by the second information, sending the first signal from the terminal device. uplink to the network device in the first time-frequency resource and / or send, by the terminal device, the second uplink signal to the network device in the second time-frequency resource. In this aspect, the terminal device sends an uplink signal based on the indication of time-frequency resource indication. In this way, a time-frequency resource conflict between uplink signals can be avoided and signal reception performance is improved.
    [0026] [0026] In a possible implementation, the first uplink signal is at least one of the following: a periodic signal, a semistatic signal, a semi-persistent signal, a periodic polling reference signal, a periodic demodulation reference signal, a periodic physical uplink shared channel signal, a periodic physical uplink control channel signal and a dynamic scaling / configuration signal; and the second uplink signal is a random access signal.
    [0027] [0027] In another possible implementation, the receipt, by a terminal device, of first information and / or second information sent by a network device includes specifically: receiving, by the terminal device, using at least one type of the following information, the first information and / or second information sent by the network device, where at least one type of the following information includes: system information, radio resource control signaling, a downlink control channel and a control control element media access (MAC CE).
    [0028] [0028] In yet another possible implementation the method additionally includes: receiving, by the terminal device, third information, where the third information includes a type of uplink signal transmission pre-coding, and the type of transmission pre-coding uplink signal includes a first type and a second type; and sending, through the terminal device, an uplink signal to the network device based on the first information, the second information and the third information.
    [0029] [0029] In yet another possible implementation the method additionally includes: when the uplink signal transmission pre-encoding type is the first type, and / or the third time-frequency resource in the first indicated time-frequency resource by the first information it overlaps the fourth time-frequency resource in the second time-frequency resource indicated by the second information, send, by the terminal device, the first uplink signal to the network device in the first time-frequency resource, and / or sending, by the terminal device, the second uplink signal to the network device in the second time-frequency resource; or when the type of uplink signal transmission pre-coding is the second type, and the third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second information, send, through the terminal device, the first uplink signal to the network device in a time-frequency resource different from the third time-frequency resource in the first time-frequency resource; or when the uplink signal transmission pre-coding type is the second type, and the fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, send, through the terminal device, the second uplink signal to the network device in a different time-frequency resource than the fourth time-frequency resource in the second time-frequency resource.
    [0030] [0030] Correspondingly, a communications device is provided and can implement the previous communications method. For example,
    [0031] [0031] In a possible implementation, a structure of the communications device includes a processor and a memory. The processor is configured to support the device in performing a corresponding function in the previous communications method. The memory is configured to couple with the processor, and the memory stores a program (an instruction) and / or data necessary for the device. Optionally, the communications device can additionally include a communications interface, configured to support communication between the device and another network element.
    [0032] [0032] In another possible implementation the communications apparatus may include a sending unit, a receiving unit and a processing unit. The sending unit and receiving unit are configured to implement, respectively, a sending function and a receiving function in the previous method. The processing unit is configured to implement a processing function in the previous method. For example, the receiving unit is configured to receive the first information and / or the second information sent by a network device, where the first information is used to instruct the sending of a first uplink signal in a first time resource. -frequency; and / or the second information is used to instruct the sending of a second uplink signal in a second time-frequency resource; and the sending unit is configured to: when a third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second information, send the first uplink signal to the network device in a time-frequency resource other than the third time-frequency resource in the first time-frequency resource; or additionally configured for: when a fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-
    [0033] [0033] When the communications device is a chip, the receiving unit can be an input unit, for example, an input circuit or an input communications interface; and the sending unit can be an output unit, for example, an output circuit or an outgoing communications interface. When the communications device is a device, the receiving unit can be a receiver (also known as a receiver); and the sending unit can be a transmitter (also known as a transmitter).
    [0034] [0034] In accordance with yet another aspect of this request, a method of communications is provided, including: sending, by a network device, first information and / or second information to a terminal device, where the first information is used to instruct the sending a first uplink signal on a first time-frequency resource; and / or the second information is used to instruct the sending of a second uplink signal in a second time-frequency resource; and when a third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second information, it receives, by the network device, the first uplink signal sent by the device terminal on a time-frequency resource other than the third time-frequency resource on the first time-frequency resource; or when a fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, receiving, by the network device, the second uplink signal sent by the device terminal on a time-frequency resource other than the fourth time-frequency resource on the second time-frequency resource; or when a third time-frequency resource in the first time-frequency resource indicated by the first information overlaps a fourth time-frequency resource in the second time-frequency resource indicated by the second information, receiving, by the network device, the first signal uplink signal sent by the terminal device in the first time-frequency resource, and / or receive, by the network device, the second uplink signal sent by the terminal device in the second time-frequency resource. In this aspect, the terminal device sends an uplink signal based on the indication of time-frequency resource indication. In this way, a time-frequency resource conflict between uplink signals can be avoided and the signal receiving performance of the network device is improved.
    [0035] [0035] In a possible implementation, the method additionally includes: sending, by the network device, third information to the terminal device, where the third information includes a type of uplink signal transmission pre-coding, and the type of uplink signal transmission pre-coding includes a first type and a second type; and receiving, by the network device, an uplink signal that is sent by the terminal device based on the first information, the second information and the third information.
    [0036] [0036] In another possible implementation, the method additionally includes: when the uplink signal transmission pre-encoding type is the first type, and / or the third time-frequency resource in the first indicated time-frequency resource the first information overlaps the fourth time-frequency resource on the second time-frequency resource indicated by the second information, to receive, by the network device, the first uplink signal that is sent by the terminal device on the first time-frequency resource, and / or receiving by the network device, the second uplink signal that is sent by the terminal device in the second time-frequency resource; or when the uplink signal transmission pre-coding type is the second type, and the third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by second information, receive, by the network device, the first uplink signal that is sent by the terminal device in a different time-frequency resource than the third time-frequency resource in the first time-frequency resource; or when the uplink signal transmission pre-coding type is the second type, and the fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, receive, by the network device, the second uplink signal that is sent by the terminal device in a time-frequency resource different from the fourth time-frequency resource in the second time-frequency resource.
    [0037] [0037] Correspondingly, a communications device is provided and can implement the previous communications method. For example, the communications device may be a chip (such as a baseband chip or a communications chip) or a device (such as a network device or a baseband processing card). The communications device can implement the above method using software or hardware, or using the hardware that runs the corresponding software.
    [0038] [0038] In a possible implementation, a structure of the communications device includes a processor and a memory. The processor is configured to support the device in performing a corresponding function in the previous communications method. The memory is configured to couple with the processor, and the memory stores a program (an instruction) and the necessary data for the device. Optionally, the communications device can additionally include a communications interface, configured to support communication between the device and another network element.
    [0039] [0039] In another possible implementation the communications apparatus may include a receiving unit and a sending unit. The receiving unit and the sending unit are configured to implement, respectively, a receiving function and a sending function in the previous method. For example, the sending unit is configured to send the first information and / or the second information to a terminal device, where the first information is used to instruct the sending of a first uplink signal on a first time-frequency resource. ; and / or the second information is used to instruct the sending of a second uplink signal in a second time-frequency resource; and when a third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second information, the receiving unit is configured to receive the first uplink signal sent by the terminal device in a time-frequency resource other than the third time-frequency resource in the first time-frequency resource; or when a fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, the receiving unit is additionally configured to receive the second uplink signal that it is sent by the terminal device in a time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource; or when a third time-frequency resource in the first time-frequency resource indicated by the first information overlaps a fourth time-frequency resource in the second time-frequency resource indicated by the second information, the receiving unit is additionally configured to receive the first uplink signal which is sent by the terminal device in the first time-frequency resource and / or the receiving unit is additionally configured to receive the second uplink signal which is sent by the terminal device in the second time-frequency resource.
    [0040] [0040] When the communications device is a chip, the receiving unit can be an input unit, for example, an input circuit or an input communications interface; and the sending unit can be an output unit, for example, an output circuit or an outgoing communications interface. When the communications device is a device, the receiving unit can be a receiver (also known as a receiver); and the sending unit can be a transmitter (also known as a transmitter).
    [0041] [0041] In accordance with yet another aspect of this order, a computer-readable storage medium is provided. The computer-readable storage media stores an instruction, and when the instruction is executed on a computer, the computer is enabled to perform the method according to the previous aspects.
    [0042] [0042] In accordance with an additional aspect of this application, a computer program product is provided, including an instruction, and when the computer program product is run on a computer, the computer is enabled to perform the method in accordance with previous aspects. BRIEF DESCRIPTION OF THE DRAWINGS
    [0043] [0043] To describe the technical solutions in the modalities of this application or in the grounds more clearly, the following briefly describes the attached drawings necessary to describe the modalities of this application or the grounds.
    [0044] [0044] Figure 1 is a schematic diagram of a communications system to which this request is applicable;
    [0045] [0045] Figure 2a is a schematic diagram of sending downlink signals;
    [0046] [0046] Figure 2b is a schematic diagram of the reception of the random access signal performed through the division of time;
    [0047] [0047] Figure 3 is a schematic diagram of a process of interaction of a method of communications according to one modality of this request;
    [0048] [0048] Figure 4a to Figure 4e are schematic diagrams of association between a random access occasion and a sync signal block or a group of sync signal blocks in an example of this application;
    [0049] [0049] Figure 5 is a schematic diagram of a process of interaction of another method of communications according to one modality of this request;
    [0050] [0050] Figure 6 is a schematic diagram of an indication of a block of sync signals actually transmitted or group of blocks of sync signals;
    [0051] [0051] Figure 7 is a schematic structural diagram of a communications device according to one embodiment of this application;
    [0052] [0052] Figure 8 is a schematic structural diagram of another communications device according to one embodiment of this application;
    [0053] [0053] Figure 9 is a schematic structural diagram of yet another communications device according to one embodiment of this application;
    [0054] [0054] Figure 10 is a schematic structural diagram of yet another communications device according to one embodiment of this application;
    [0055] [0055] Figure 11 is a structural schematic diagram of the hardware of a communications device according to one embodiment of this request; and
    [0056] [0056] Figure 12 is a structural schematic diagram of hardware of another communications device according to one embodiment of this order. DESCRIPTION OF THE MODALITIES
    [0057] [0057] The following describes the modalities of this application with reference to the attached drawings in the modalities of this application.
    [0058] [0058] As shown in a schematic diagram of a communications system in Figure 1, a solution in this order is applicable to the communications system. The communications system can include at least one network device (only one network device is shown, for example, a gNB in the figure) and one or more terminal devices connected to the network device (four UEs are shown in the figure: UE1 a EU4).
    [0059] [0059] The network device can be a device that can communicate with the terminal device. The network device can be any device with a wireless send and receive function. The network device includes, but is not limited to, a base station (for example, a NÓB, an evolved NodeB and NÓóB, a base station in a fifth generation communications system (the fifth generation, 5G), a network device in a future communications system, or an access node, a wireless relay node, or a wireless backhaul node in a Wi-Fi system). Alternatively, the network device can be a radio controller in a cloud radio access network (CRAN) scenario. Alternatively, the network device can be a network device on a 5G network or a network device on a future evolved network; or it can be a wearable device, a device in the vehicle or the like. Alternatively, the network device can be a small cell, a transmission reception point (TRP) or the like. This request is certainly not limited to them.
    [0060] [0060] The terminal device is a device with a wireless send and receive function. The terminal device can be implanted on land and includes an internal or external device, a portable device, a wearable device or a device in the vehicle, it can be implanted on a water surface (for example, a ship) or it can be implanted in the air (for example, an airplane, balloon, or satellite). The terminal device may be a mobile phone, a tablet computer (Pad), a computer having a wireless send and receive function, a virtual reality terminal device (Virtual Reality, VR), a reality terminal device augmented reality (AR), a wireless terminal related to industrial control (industrial control), a wireless terminal related to self-driving (self driving), a wireless terminal related to remote medicine (remote medical), a wireless terminal related to a smart grid, a wireless terminal related to transportation safety, a wireless terminal related to a smart city, a wireless terminal related to a smart home ) or similar. An application scenario is not limited in the modalities of this request. Sometimes the terminal device can alternatively be referred to as user equipment, an access terminal device, an UE unit, an UE station, a mobile station, a mobile console, a remote station , a remote terminal device, a mobile device, an UE terminal device, a terminal device, a terminal (terminal), a wireless communications device, an UE agent, an UE device or the like.
    [0061] [0061] It should be noted that the terms "system" and "network" can be used interchangeably in the modalities of this application. The term "a plurality of" means two or more than two. In view of this, the term "a plurality of" can also be understood as "at least two" in the modalities of this application. The term "and / or" describes an association relationship to describe associated objects and represents that three relationships can exist. For example, A and / or B can represent the following three cases: Only À exists, A and B exist and only B exists. Additionally, the character "/" generally represents a relationship "or" between the associated objects, unless otherwise specified.
    [0062] [0062] As shown in Figure 1, a base station implements cell coverage using a plurality of beams. The base station needs a suitable beam direction to communicate with a terminal device, for example, to receive a random access preamble signal or send a random access response. In a downlink synchronization process, the terminal device can obtain a base station transmission beam and a terminal receive beam to send a downlink signal. In a process of sending and receiving an uplink random access signal, the base station can obtain a signal sent on an uplink and a receiving beam from the base station. There is an association relationship between a downlink signal and a random access resource / preamble to improve efficiency.
    [0063] [0063] The modalities of this application provide a method and apparatus for communications. A time-frequency location of a random access resource associated with each downlink synchronization signal is indicated, so that a terminal device obtains, through downlink synchronization, a time-frequency location for sending a signal uplink random access, to prevent blind attempt by the terminal device and a beam mismatch from a network device to occur when the network device receives a random access signal, thereby improving efficiency.
    [0064] [0064] Figure 2a is a schematic diagram of sending downlink signals. Downlink signals are sent in a time-split manner. To be specific, different downlink signals are sent at different times. For example, a downlink signal is a downlink SS / PBCH block, and the sync signal block is identified using an SS / PBCH block index. . The downlink signal may be one or more blocks of synchronization signals.
    [0065] [0065] Figure 2b is a schematic diagram of the reception of the random access signal performed through the division of time. To be specific, the random access signals (associated with different downlink signals) are received at different times. Random access signals in a plurality of directions can be received separately at the same time, based on the ability to implement a network device (for example, the network device first uses antenna elements in a set of antennas to receive signals in multiple directions, and uses digital domain beam formation to generate a plurality of receiving beams and obtain signals in the directions of the receiving beams).
    [0066] [0066] In this application, for ease of description, a random access feature or a preamble to a random access feature is referred to as "random access feature / preamble" for short. In other words, the random access feature includes time and frequency resources used for random access and a set / subset of random access preambles in random access time and frequency resources. A random access occasion (occasion of RACH / occasion of transmission of RACH / opportunity of RACH / chance of RACH / occasion of PRACH, RO for short) is time and frequency resources for sending a preamble of random access. A random access resource can be an RO, or a set of random access preambles in an RO, or a combination of a random access preamble and a timing. A terminal device can send a random access preamble signal on this resource.
    [0067] [0067] "Fixed" in this request means stipulated by a protocol or agreed between a network device and a terminal device.
    [0068] [0068] An index on this order starts at 0, or can start at 1 in a real situation. When the index is started from 1, an index from O is automatically incremented by 1.
    [0069] [0069] The RO resource in this application represents a time resource and a time-frequency resource of a random access timer.
    [0070] [0070] A sync signal block (SS / PBCH block) in this application is referred to as an SSB for short, and a sync signal block group (SS / PBCH block) is referred to as an SSB group for short . An SSB group includes one or more SSBs.
    [0071] [0071] To facilitate description, descriptions of a random access occasion (RO), a sync signal block (SS / PBCH block or SSB) and a sync signal block group (SS / PBCH block group, or SSB group) should indicate one or more, rather than a limitation to just one, unless a number of random access occasions, a number of sync signal blocks or a number of sync signal block groups is explicitly emphasized.
    [0072] [0072] This application provides four methods for assigning a serial number to a block of synchronization signals (SS / PBCH block, SSB). The serial number can sometimes be called an index, used to identify the SSB.
    [0073] [0073] In a first numbering method, all SSBs actually transmitted are numbered, without differentiation between the groups of blocks of synchronization signals actually transmitted (SS / PBCH block group, SSB group for short). For example, 49 SSBs are actually transmitted and the 49 SSBs are numbered from 0 to 48.
    [0074] [0074] In a second numbering method, an SSB group actually transmitted and an SSB within the SSB group actually transmitted are numbered separately for expression. For example, 8 SSB groups are actually transmitted and the 8 SSB groups are numbered from 0 to 7. The SSBs in each SSB group also have serial numbers. For example, an SSB group has 8 SSBs, and the 8 SSBs are numbered from 0 to 7.
    [0075] [0075] IN a third numbering method, all SSBs possibly transmitted are numbered, without differentiating between groups of SSBs possibly transmitted. For example, if 64 SSBs are possibly transmitted, the SSBs will be numbered from 0 to 63.
    [0076] [0076] In a fourth numbering method, a possibly transmitted SSB group and an SSB within the possibly transmitted SSB group are numbered separately for expression. For example, there are 9 SSB groups and the 9 SSB groups are numbered from 0 to 8. The SSBs in each possibly transmitted SSB group also have serial numbers. For example, an SSB group has 9 SSBs, and the 9 SSBs are numbered 0 through 8.
    [0077] [0077] The previous sync signal block can be a sync signal block in a half-frame to transmit a sync signal block. It should be noted that the sync signal block or group of sync signal blocks mentioned in this application can be a sync signal block or a group of possibly transmitted sync signal blocks, or can be a sync signal block. synchronization or a group of blocks of synchronization signals actually transmitted. There may be one or more blocks of sync signals or groups of blocks of sync signals possibly transmitted. There may be one or more blocks of sync signals or groups of blocks of sync signals actually transmitted.
    [0078] [0078] The configuration information by a network device or base station mentioned in this application can be performed using at least one of a MIB, remaining minimum system information (RMSI), system information block ( system information block, SIB) 1, SIB2, downlink control information, DCI, radio resource control signaling (RRC) and a media access control element ( media access control-control element, MAC-CE).
    [0079] [0079] A group, a set, and a category mentioned in this application are different expressions of the same concept.
    [0080] [0080] A group of random access preambles mentioned in this application can be a direct subset of random access preambles or can mean the following: P random access preamble strings are mapped to different blocks of sync signals or mapped to different groups of blocks of sync signals, and a number of groups or a number of subsets is related to a number of sync blocks or related to a number of groups of sync blocks.
    [0081] [0081] Mod indicates the calculation of a remainder, floor indicates rounding down to a nearest whole number, and ceil indicates rounding up to a nearest whole number.
    [0082] [0082] The meanings of mapping and association are the same.
    [0083] [0083] Figure 3 is a schematic diagram of a process of interaction of a method of communications according to one modality of this request. The method can include the following steps:
    [0084] [0084] S301: A network device sends block index information of synchronization signals to a terminal device. The terminal device obtains the synchronization signal block index information. For example, the network device sends a sync signal block to the terminal device, where the sync signal block index information is implicitly carried in the sync signal block.
    [0085] [0085] S302: The network device sends, to the terminal device, information used to indicate an association relationship between a random access resource RO and a block of synchronization signals. The terminal device receives the indication information.
    [0086] [0086] S303: The terminal device accesses the network device based on the information in an RO corresponding to the block index information of synchronization signals. The network device receives a random access signal sent by the terminal device.
    [0087] [0087] The network device sends a downlink signal (for example, the sync signal block) to the terminal device to perform downlink synchronization. The synchronization signal block index information is carried when the downlink signal is sent. Sync signal block index information is used to identify the sync signal block and, for example, is a sync signal block serial number, a Sync signal block index, or other information available for identify the block of synchronization signals. A block of synchronization signals includes a primary synchronization signal symbol (PSS), a secondary synchronization signal symbol (SSS) and two physical broadcast channel symbols, PBCH ).
    [0088] [0088] Additionally, the network device additionally sends, to the terminal device, the information used to indicate an association relationship between a random access resource RO and a block of synchronization signals.
    [0089] [0089] It should be noted that, the synchronization signal block index information and the information indicating an association relationship can be sent by the network device at the same time in a part of configuration information, or can be sent separately by the network device. The two steps described here do not necessarily mean that they are sent separately.
    [0090] [0090] The association relationship between an RO and a block of sync signals is at least one of the following: a number of blocks of sync signals associated with an RO is at least 1 / F, or is P at most, where F is a number of ROs in frequency domain, and P is related to a number of blocks of downlink synchronization signals actually transmitted; and / or N blocks of synchronization signals or N groups of blocks of synchronization signals are associated with an RO in the frequency domain or with all the ROs in the frequency domain; and / or the first RACH resources in each X RACH resource configuration periods Y are associated with the same sync signal blocks or groups of sync signal blocks when a random access resource configuration period is P, where P and X are integers and Y is equal to P multiplied by X.
    [0091] [0091] The association relationship between an RO and a block of synchronization signals is described in detail below.
    [0092] [0092] The terminal device accesses the network device based on the association relationship between an RO and a sync signal block in the RO corresponding to the sync signal block index information. For example, the terminal device sends a random access signal to the network device, and the network device receives the random access signal sent by the terminal device.
    [0093] [0093] The network device knows the status of a random access receiving beam corresponding to a downlink signal / transmission beam coverage area, and assigns a random access resource time-frequency location for each signal downlink, so that the terminal device obtains, through downlink synchronization, a time-frequency location to send an uplink random access signal, to avoid a blind attempt by the terminal device and a beam mismatch of the network device from occurring when the network device receives a random access signal, thereby improving efficiency.
    [0094] [0094] Specifically, the association relationship between an RO and a block of synchronization signals is described below:
    [0095] [0095] An association relationship is that a number of blocks of synchronization signals associated with an RO is at least 1 / F, or is P at most, where F is a number of ROs in frequency domain, and P is related to a number of sync signal blocks actually transmitted.
    [0096] [0096] In this association relationship, the number of ROs in frequency domain and a number of blocks of sync signals or groups of blocks of sync signals associated with an RO are set together.
    [0097] [0097] In a specific implementation, the number N of synchronization signal blocks associated with an RO can be related to F. For example, the number N can be a multiple of 1 / F; or the quantity N can be 1 / F, in other words, a block of synchronization signals can be associated with all ROs; or the quantity N may be a fractional multiple of F. F is the quantity of ROs in frequency domain and a value of F may be 1, 2, 4, 6 or 8. The network device may define or configure a minimum quantity of blocks of synchronization signals associated with an RO such as 1 / F. A value of N can also be defined based on F. For example, when F = 1, the value of N can be 1, 2, 3, 4, ..., Y1, where Y1 is the maximum number of blocks of SS / PBCH associated with an RO; when F = 2, the value of N can be 1/2, 1,2, 3,4, ..., Y1; when F = 4, the value of N can be 1/4, 1/2, 1,2, 3,4, ..., Y1; when F = 6, the value of N can be 1/6, 1/3, 1/2, 1,2,3,4, ..., Y1; when = 8, the value of N can be 1/8, 1/4, 1/2, 1,2,3,4, ..., Y1.
    [0098] [0098] The value of N can also be related to the number of blocks of synchronization signals actually transmitted in a half-frame, for example, a factor of the number of blocks of synchronization signals actually transmitted.
    [0099] [0099] Another association relationship is that N blocks of synchronization signals or N groups of blocks of synchronization signals are associated with an RO in the frequency domain or with all the ROs in the frequency domain.
    [0100] [0100] In a specific implementation, the N blocks of sync signals or groups of blocks of sync signals can be associated with all ROs F. F can be a value greater than or equal to 1. A value of N can be some or all values from 1 to 8. When the value of N is some of the values, the value of N can be 1, it can be 1 or 2, it can be 1, 2 or 3, or it can be 1, 2, 3 or 4. The N sync signal blocks or groups of sync signal blocks can be associated with a frequency division multiplexed RO, or can be associated with some frequency division multiplexed ROs. The network device may instruct to associate the N blocks of sync signals or groups of blocks of downlink sync signals to all F ROs or with an RO in frequency domain. F ROs can be RO multiplexed by frequency division at the same time.
    [0101] [0101] When an N2 number of sync signal blocks or groups of sync signal blocks actually transmitted is less than an N amount, configured by the network device, of sync signal blocks or groups of sync signal blocks associated with an RO, all N sync signal blocks or groups of downlink sync signal blocks can be associated with a corresponding RO. For example, if the number of sync signal blocks actually transmitted is 5 and the number, configured by the network device, of sync signal blocks associated with an RO is 8, all 5 sync signal blocks will be associated with the RO.
    [0102] [0102] When an amount N of sync signal blocks or groups of sync signal blocks actually transmitted cannot be exactly divided by an M quantity, configured by the network device, of sync signal blocks or groups of sync signals synchronization signals associated with an RO, after a number of sync signal blocks or groups of sync signal blocks are associated with a corresponding RO, where the quantity is an integer multiple of the quantity M configured by the network device, a remaining block of sync signals or a group of sync blocks is associated with one or more other ROs.
    [0103] [0103] Additionally, when the association relationship is that N blocks of synchronization signals or N groups of blocks of synchronization signals are associated with an RO in the frequency domain or are associated with all ROs in the frequency domain, the method additionally includes: receiving indication information from the network device via the terminal device, where indication information is used to indicate that the N sync signal blocks or N groups of sync signal blocks are associated with a Frequency domain RO, or are used to indicate that the N sync signal blocks or N sync signal block groups are associated with all frequency domain ROs.
    [0104] [0104] Yet another association relationship is that the first RACH resources in each X RACH Y resource configuration periods are associated with the same sync signal blocks or groups of sync signal blocks when a resource configuration period random access is P, where P and X are integers and Y is equal to P multiplied by X.
    [0105] [0105] This method for associating a RACH resource with a sync signal block or sync signal block group is a cyclic association method. An X parameter is defined, and the first RACH resources in the X RACH resource configuration periods are associated with the same blocks of synchronization signals. In other words, an association relationship in each X RACH resource configuration periods is recalculated. The X RACH resource configuration period can be referred to as a random access period. X can be fixed in a protocol, for example, it can be any value in 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11.12, 13, 14, 15 and 16, for example , can be 1, 8 or 16. X can be received from the network device or can be pre-stored. A number of random access resources in a random access resource configuration period or in a random access resource association period are related to a number of downlink sync signal blocks or groups of sync signal block downlink. A value of X can be configured, and it can be some or all of the values in 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 16.
    [0106] [0106] The random access resource association period can be understood as an amount of time or a width of time occupied by a random access resource associated with a block of synchronization signals or a number of ROs associated with a block of synchronization signals. downlink synchronization signals sent. The first RO is associated with the first block of synchronization signals sent in each of the different association periods. Alternatively, the first random access feature is associated with the first block of sync signals sent at each of different time periods for association.
    [0107] [0107] The random access resource configuration period is also called the random access configuration period, and is a time interval in which a random access resource occurs repeatedly, or includes at least one time interval in which resources access points in a full random access resource association period occur repeatedly.
    [0108] [0108] The X RACH resource configuration periods can also be set to Y ms. A Y value can be 10, 20, 40, 80, 160, 320 or
    [0109] [0109] Alternatively, the value of X or Y can be determined based on the number of sync signal blocks or groups of sync signal blocks actually transmitted and / or the number of sync signal blocks or groups of sync signals synchronization signals associated with an RO, and / or determined based on an amount of random access resources in a RACH resource configuration period. For example, the number of ROs in an RO period is 2, the number of sync signal blocks or downlink sync signal block groups associated with an RO is 3, and the number of sync signal blocks or groups of blocks of synchronization signals actually transmitted is 8; in this case, a required value of X is 4. Additionally, X can also be a fixed value, for example, the value of X is 1, 2, 4, 8 or 16. In this way, a number of remaining ROs in the system can be reduced. The value of X can be a multiple of an integer or a fractional multiple of the number of blocks of synchronization signals actually transmitted.
    [0110] [0110] The amount of RACH resources in the RACH resource configuration period can be related to the number of sync signal blocks or groups of signal sync blocks actually transmitted in a half-frame. For example, if X is 1, an association period is 1. In this case, the amount of RACH resources in the RACH resource configuration period can be the same or it can be an integer multiple or a fractional multiple of the amount of downlink sync blocks or groups of sync signal blocks actually transmitted. When an RO is associated with a plurality of sync signal blocks or groups of sync signal blocks, the amount of RACH resources in the RACH resource configuration period can be a fractional multiple of the number of sync signal blocks downlink or block groups of synchronization signals actually transmitted. When a plurality of ROs are associated with a downlink sync signal block or group of sync signal blocks, the amount of RACH resources in the RACH resource configuration period can be an integer multiple of the amount of downlink sync blocks or groups of sync signal blocks actually transmitted. When the association is made one by one, the amount of RACH resources in the RACH resource configuration period can be the same as the number of downlink sync signal blocks or groups of sync signal blocks actually transmitted.
    [0111] [0111] X or Y can alternatively be configured. For example, X can be some or all of the selected values of 1, 2,3,4,5,6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 16, for example, can be a value at 1,2,4,
    [0112] [0112] It is assumed that N is the number of sync signal blocks or groups of sync signal blocks associated with an RO, and Q is the number of sync signal blocks or groups of sync signal blocks actually transmitted or possibly transmitted. In this case, an index j of a sync signal block or group of sync signal blocks associated with an RO ion is (ixN) Q mod Q for (ixN) mod Q + N-1. If j is greater than or equal to Q, j = j mod Q. For example, N is 3 and Q is 8; in that case, sync signal block indices or sync signal block groups associated with an RO with j = 5 are 7, 8 and 9, and mod 8 can be O and mode 9 can be 1. When N = 1, j = i mod Q, as shown in 4c.
    [0113] [0113] If quantities of ROs associated with some sync signal blocks or groups of sync signal blocks are inconsistent because there is a remaining RO feature in a random access period, the last two ROs shown in Figure 4c are remaining ROs or redundant ROs.
    [0114] [0114] In an implementation, a remaining RACH resource is considered to be an invalid RACH resource and may not be associated with any sync signal blocks or sync signal block groups. In other words, the terminal device may not send any random access preambles to the random access facility. A remaining RO is explained as follows: For example, a random access feature configuration period has 4 ROs, 3 periods are configured together, and there are 12 ROs in total. An RO is associated with a block of sync signals and 5 blocks of sync signals are associated. In that case, there are two remaining ROs and each RO is associated with a block of synchronization signals. The 12 ROs are classified and the ROs indexes are from 0 to 11. ROs with indexes O and 5 are associated with an SSB with an index 0. ROs with indexes 1 and 6 are associated with an SSB with an index 1. ROs with indexes 3 and 8 are associated with an SSB with an index
    [0115] [0115] In another implementation, a remaining RO or a redundant RO has a different association relationship in each X RACH resource configuration periods or random access periods. The association relationship can be that one or more remaining random access resources are associated from the first sync signal block or group of sync signal blocks, as shown in Figure 4d. Alternatively, one or more remaining random access resources are associated from the last sync signal block or group of sync signal blocks, or are associated with a next sync signal block from a final sync block in the X previous periods, or are associated with a next group of sync signal blocks from a group of final sync blocks in previous X periods, as shown in Figure 4e. For example, there are L ROs remaining in each random access period, the number of sync signal blocks or groups of sync signal blocks actually transmitted is Q, and M is the number of sync signal blocks or groups of blocks synchronization signals associated with an RO; in this case, an index j of a sync signal block or group of sync signal blocks associated with a remaining RO iósira in a random access period with an index m is ((mx L + i) x M) mod Q for ((mx L + i) x M) mod Q + M - 1. The repeated association can be performed sequentially in different periods of random access based on the previous relationship, for example, starting from the first block of synchronization signals or group of sync blocks in an odd number period, starting from the last sync signal block or group of sync blocks in an even number period or an odd number period, or starting from of the first sync signal block or group of sync signal blocks in an even number period. Any one or more of the three previous association relationships can be used in different X periods.
    [0116] [0116] Alternatively, the following can be configured implicitly or explicitly, including configured by the network device: "a number of frequency domain ROs" and / or "a number of synchronization signal blocks associated with an RO" and / or “N blocks of sync signals or N groups of blocks of sync signals are associated with only one RO in the frequency domain or all ROs in the frequency domain”. The sequence includes: ROs in a RACH resource configuration period are associated with different sync signal blocks or sync signal block groups or the same sync signal block or sync signal block group accordingly. with a sequence of "frequency domain first and time domain later" or "time domain first and frequency domain after”.
    [0117] [0117] The sync signal block or sync signal block group mentioned in this application can be a sync signal block or sync signal block group in a half frame, and this is universal for all blocks transport synchronization signals. Alternatively, the sync signal block or group of sync signal blocks mentioned in this application can be a sync signal block or a group of sync signal blocks in a set of SS / PBCH bursts.
    [0118] [0118] Additionally, the network device configures a number of sync signal blocks or groups of sync signal blocks associated with an RO like N, an amount of sync signal blocks actually transmitted as Q1, an amount of blocks of sync signals actually transmitted in a group of sync signal blocks actually transmitted as Q2, and a number of groups of sync signal blocks actually transmitted as Q3, where Q1, Q2 and Q3 can be multiples of N. The device terminal can determine a value of N based on a factor of any one or more values of Q1, Q2 and Q3. For example, if Q1 = 6, a range of N values can be only 1,2, 3 and 6. P is a factor of Q1, ie Q1 is a multiple of N. The network device can define the value from N to some factor values of any one or more values of Q1, Q2 and O3, for example, first H values, where H can be any value of 1, 2, 3, 4, 5.6, 7 and 8. The first H values can be the first H lowest values in ascending order, or the first H highest values can be decreasing. For example, if Q1 = 24 and H = 4, only four factors 1, 2, 3 and 4 are selected. For example, the network device sets the number of sync signal blocks or groups of sync signal blocks associated with an RO such as N, and the value of N can be 3 or 4. When the number of sync signal blocks synchronization or groups of blocks of synchronization signals actually transmitted is 6, N is 3; when the number of sync signal blocks or groups of sync signal blocks actually transmitted is 8, Né 4.
    [0119] [0119] When the number of synchronization signal blocks associated with an RO is N, and a number of contention-based or non-containment-based preamble preambles or all random access preambles in an RO is N1, an amount N2 of random access preambles associated with an SSB is no more than floor (N1 / N) or N1 / N. A value of N1 can be any one or more values of 4,8,12,16,20, 24,28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 128 and 256. The device terminal does not want a greater number of random access preambles configured by the network device to be greater than floor (N1I / N) or N1 / N. Alternatively, when the amount of random access preambles that are configured by the network device and that are received by the terminal device is greater than floor (NI / N) or N1I / N, a preamble is selected from no more than floor ( N1I / N) or NI / N preambles. A benefit is that different random access preambles can be associated with different blocks of sync signals, and the random access preambles associated with different blocks of sync signals do not overlap each other. In this way, the network device can differentiate between terminal devices with spatial domain parameters (beams) corresponding to different blocks of SS / PBCH. The value of N can be some or all of the values of 1, 2, 3,4, 5, 6, 7, 8, 9, 10, 11, 12, 14,15, 16 and
    [0120] [0120] The association relationship between an RO and a number of blocks of synchronization signals is determined above. After the association relationship between an RO and a number of sync signal blocks or groups of sync signal blocks is determined, indexes of the RO and the sync signal block need to be associated. A specific form of association is as follows:
    [0121] [0121] The association relationship between an RO and a block of synchronization signals can be configured in a one to many, many to one, one to one or many to many way. When the association relationship between a random access timing and a sync signal block is configured in a many-to-one manner, to be specific, when N preambles / random access timings are associated with a sync signal block, the N random access timings can be multiplexed by frequency division, to be specific, arranged at the same time, but with different frequencies; or they can satisfy multiplexed by time division, to be specific, located in different time resources; or they can be multiplexed by time division (TDM) and multiplexed by frequency division (FDM). A value of N can be 1,2,4 and 6, or 1,2, 4 and 8, or it can be at least one or four of 1,2,3,4,5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 16. The number of sync signal blocks associated with a random access timer can be 1, 2 or 4. Alternatively, one or two groups of sync signal blocks can be be associated with a random access timer. Alternatively, all ROs multiplexed by frequency division can be associated with a block of synchronization signals.
    [0122] [0122] An amount M of sync signal blocks associated with N (N> 1) ROs can be at least one of 1,2,3,4,5,6,7e8, for example, can be 1, 2 or 4. Alternatively, an amount M of groups of sync signal blocks associated with N (N> 1) ROs can be at least one of 1, 2, 3, 4, 5,6, 7 and 8, for example, can be 1 or 2.
    [0123] [0123] When an association relationship of associating N ROs with M blocks of synchronization signals can be configured in the form of one-to-one
    [0124] [0124] In a first configuration method to associate M blocks of sync signals to N ROs, the M blocks of sync signals are associated with each of the N ROs. For example, if M = 2and N = 2, a block of synchronization signals with an index in fm, m + 1) is associated with an RO with an index n, and a block of downlink synchronization signals with an index em (m, m + 1) is associated with an RO with an index n + 1, where men are, respectively, multiples of M and N, and em can be equal to n. For example, if M = 2 and N = 2, a block of synchronization signals with an index in (m, ..., m + M - 1) is associated with each RO with an index in (n, ... , n + N — 1), where i and n are, respectively, multiples of M and N, and m can be equal to n. For example, a block of synchronization signals with an index i can be associated with an RO with an index j, where floor (i / M) = floor (j / N), i can be equal to m, and j can be equal to n.
    [0125] [0125] In a second configuration method, M blocks of synchronization signals are associated with the corresponding ROs in N ROs, and each RO is associated with a different block of synchronization signals. For example, a block of synchronization signals with an index i is associated with an RO with an index j, where n = j mod N; m = i nod M; m = n x M, or (i mod M) = (| nod N) x M; M can be in a relationship with N, for example, a multiple relationship, and M can be a multiple of N obtained by multiplying N by 1,2,3,4,5,6, 7, 8, 9 or 10 For example, a block of synchronization signals with an index in (m, ..., m + M - 1) is associated with an RO with an index n, where m = nxM oui = jxM.
    [0126] [0126] In a third configuration method for associating M blocks of synchronization signals to N ROs, an RO with an index in (n, ..., n + N— 1) is associated with each of the M signal blocks synchronization, as shown in Figure 4b. For example, an RO with an index in fn, ..., n + N— 1) is associated with a block of synchronization signals with an index i, where i is any value in fm, .., m + M - 1). For example, a block of synchronization signals with an index i is associated with an RO with an index j, where floor (i / M) = floor (j / N). For example, if M = 2 and N = 2, an RO with an Index in (n, n + 1) is associated with a block of synchronization signals with an index m, and an RO with an index in fn, n + 1) is associated with a block of synchronization signals with an index m, where men are, respectively, multiples of M and N, and m can be equal to n. For example, a block of synchronization signals with an index i is associated with an RO with an index j, where floor (i / M) = floor (j / N).
    [0127] [0127] In a fourth configuration method, N ROs are associated with the corresponding sync signal blocks, and each sync signal block is associated with a different RO. An RO with an index in (n, n + 1), (n, n + 1, n + 2), (ff, n + 1, n + 2, n + 3) ouín, n + 1, n + 2 , n + 3, n + 4, n + 5) is associated with a block of synchronization signals with an index m, where in this case, m is an even number, n = Mx2, n = mx4, n = mx3oun = mx6 . For example, an RO with an index in fn, ..., n + N— 1) is associated with a block of sync signals with an index m, where n = mx N. For example, a block of sync signals with an index | it is associated with an RO with an index j, where j = ixN.
    [0128] [0128] In a fifth configuration method, the M blocks of synchronization signals are associated with N ROs through repeated association or perforation ("perforated" has the same meaning as "released", "deleted", "not used" , "not transmitted", "not associated" and "does not match" or the terminal device does not send a random access preamble in the perforated RO): an index relation of an index of an RO associated with a block of synchronization signals with an index m is: m mod M = (n mod N) mod M.
    [0129] [0129] The values of M and N each can be any value of 1, 2,3,4,5,6,7,8, 10,12, 14 and 16. The value of N can be defined based on a number of ROs multiplexed by frequency division. For example, the value of N is a factor in the number of ROs multiplexed by frequency division or it is the number of ROs multiplexed by frequency division. The value of M can be a factor of the number of blocks of synchronization signals actually transmitted or it can be a configured value. The value of M is related to the value of N. The two values can be in a multiple relationship or one value can be less than the other value.
    [0130] [0130] There are five configuration methods for associating a plurality of ROs to one or more groups of blocks of synchronization signals. In a first configuration method to associate M groups of sync signal blocks with N ROs, the M groups of sync signal blocks are associated with each of the N ROs. For example, if M = 2and N = 2, a group of sync signal blocks with an index in (fm, m + 1) is associated with an RO with an index n, and a group of sync signal blocks with an index in (fm, m + 1). an index in (fm, m + 1) is associated with an RO with an Index n + 1, where men are, respectively, multiples of M and N, and m can be equal to n. For example, if M = 2eN = 2, a group of synchronization signal blocks with an Index in (fm, ..., m + M - 1) is associated with each RO with an index in fn, ..., n + N- 1), where men are, respectively, multiples of M and N, and m can be equal to n. For example, a group of sync signal blocks with an index i is associated with an RO with an index j, where floor (i / M) = floor (j / N).
    [0131] [0131] In a second configuration method, the M groups of sync signal blocks are associated with the corresponding ROs in N ROs, and each RO is associated with a different group of sync signal blocks. For example, a group of sync signal blocks with an Index i is associated with an RO with an index j, where n = j mod N; m = i mod M; m = nxM, or (i mod M) = (| nod N) x M; M can be in a relationship with N, for example, a multiple relationship, and M can be a multiple of N obtained by multiplying N by 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 For example, a group of sync signal blocks with an index in (fm, .., m + M— 1) is associated with an RO with an index n, where = nxMoui = jxM.
    [0132] [0132] In a third configuration method to associate M groups of synchronization signal blocks to N ROs, an RO with an index in fn, ..., n + N— 1) is associated with each of the M groups of sync signal blocks, as shown in Figure 1. For example, an RO with an Index at (n, ..., n + N - 1) is associated with a group of sync signal blocks with an index |, where i is any value in (fm, ..., m + M- 1). For example, a group of sync signal blocks with an index i is associated with an RO with an index j, where floor (i / M) = floor (j / N). For example, if M = 2eN = 2, an RO with an index in fn, n + 1) is associated with a group of blocks of sync signals with an index m, and an RO with an index in (n, n + 1) is associated with a group of blocks of synchronization signals with an index m, where men are, respectively, multiples of M and N, and m can be equal to n. For example, a group of sync signal blocks with an index i is associated with an RO with an index j, where floor (i / M) = floor (j / N).
    [0133] [0133] In a fourth configuration method, N ROs are associated with the corresponding sync signal block groups, and each sync signal block group is associated with a different RO. Join RO with an Index in fn, n + 1), fn, n + 1, n + 2), (n, n + 1, n + 2, n + 3) oufin, n + 1, n + 2, n + 3, n + 4 n + 5) is associated with a group of sync signal blocks with an index m, where in this case, m is an even number, n = mx 2, .n = mx4, n = mx3, oun = mx6.For example, an RO with an index at (n, ..., n + N-1) is associated with an RO with an index m, where n = mx N. For example, a group of signal blocks synchronization with an index i is associated with an RO with an index j, where j = ixN.
    [0134] [0134] In a fifth configuration method, the M block groups of synchronization signals are associated with N ROs through association or repeated drilling ("perforated" has the same meaning as "released", "deleted", "no used "," not transmitted "," not associated "and" not matched "): an index relation of an index n of an RO associated with a group of blocks of synchronization signals with an index m is: m mod M = (n mod N) mod M.
    [0135] [0135] The values of M and N each can have any value of 1, 2,3,4,5,6,7,8, 10,12, 14 and 16. The network device can configure these parameters based on in any combination of the previous methods or using an indexing method. The Table | it is a Table of a configuration. Table 2 is a table from another configuration. The value of M can be some or all of the values of 1, 2, 4, 6 and 8, for example, it can be 1,2,4 and 6 or 1,2,4 and 8. The value of N can be 1 , 2 € 4. The value of N can be defined based on the number of ROs multiplexed by frequency division. For example, the value of N is a factor in the number of ROs multiplexed by frequency division or it is the number of ROs multiplexed by frequency division. The value of M can be a factor of the number of blocks of synchronization signals actually transmitted or it can be a configured value. The value of M is related to the value of N.
    [0136] [0136] It should be noted that, an index of an RO can be an Index of an RO in an association period (time period for association), or it can be an index of an RO in X periods of resource configuration. RACH, or it can be an index of an RO in a RACH resource configuration period, and it can be collectively referred to as an index of an RO in a period. The index n has a plurality of forms. A first form is a direct index n, and a value of n can be 0, 1,2,3e4. Index n is related to an RO count over a period, and is not related to another parameter. If there are 8 ROs in a period, the index value n is 0 to 7. In a second method of defining value, the value of n is related to an RO location, and can be calculated using the RO location, including a frequency location and time domain location. For example, one indexing method is n = f (s id, t id, f id, ul carrier jd) and another index calculation method is n = f (s id, tid, f id, ul carrier jd) mod B, where B is an amount of ROs in a period. f (s id, tid, f id, ul carrier id) indicates that n is related to at least one parameter ems id, t id f ide ul carrier id. For example, a calculation method is f (s id, tid, f id, ul carrier id) = 1 + sid + 14xtid + 14x XxX fid + 14x XxX Y x ul carrier id, where s id is an initial PRACH symbol; t id is a PRACH time slot symbol; f id is a PRACH frequency domain location and a value of f id is greater than or equal to O and less than or equal to Y; ul carrier id is an uplink carrier index of a PRACH 1 message; X is a maximum amount of time domain RACH resources; and Y is a maximum value for a frequency domain RACH resource. This index can also be an index of a frequency division multiplexed RO.
    [0137] [0137] n may alternatively be related to a number of sync signal blocks or groups of sync signal blocks in a half-frame, or related to a number of sync signal blocks or a group of blocks of synchronization signals associated with an RO, or related to an M3 amount of random access resources in a random access resource configuration period or in a random access resource association period. For example,
    [0138] [0138] The network device can configure these parameters based on any combination of the previous methods or using an indexing method. Table 1 is a Table of a configuration. Table 2 is a table from another configuration. The network device can select some or all of the configured values or some or all of the rules in the tables for configuration. The example in Table 1 and Table 2 provides examples of Rule and Quantity Association. The network device can perform configuration based on the Rule and Quantity Association, or Example, or Rule and Quantity Association, or Version, or Version and Example.
    [0139] [0139] In another implementation, the network device can separately configure the number of ROs multiplexed by frequency division (at the same time), for example, it can configure values (F1, F2, F3, F4). For example, F1, F2, F3 and F4 are, respectively, 1, 2, 4 and 6; or they can be configured as 1, 2, 4 and 8; or they can be 1, 2, 3 and 4; or they can be some or all of the values of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 16, for example, they can be two, three, or four values of the same, for example, can be 1 and 2 or | and 4, with the remaining values reserved. The network device can also separately configure the N number of sync signal blocks associated with an RO, and can set the N value to 1 / F, 2 / F, 1/2, 1, 2, 4, 5, 6, 7, or 8 and 1 group, 2 groups, 3 groups, 4 groups, 5 groups, 6 groups, 7 groups or 8 groups, where F is any value or factor of any value in (F1, F2, F3, F4 ).
    [0140] [0140] IN an implementation, if the number of multiplexed ROs per frequency division configured is F1, in that case, the number N of sync signal blocks (or groups of sync signal blocks) associated with an RO must be one F1 factor or an integer that is not greater than the number of sync signal blocks actually transmitted (or sync signal block groups). The terminal device does not want the base station to set another value. Alternatively, if the base station sets another value, the terminal device sets N to a predefined value by default.
    [0141] [0141] In an implementation, if the number of multiplexed ROs per frequency division configured is F2, in that case, the number N of sync signal blocks (or groups of sync signal blocks) associated with an RO must be a factor of F2 or an integer that is not greater than the number of sync signal blocks actually transmitted (or sync signal block groups). The terminal device does not want the base station to set another value. Alternatively, if the base station sets another value, the terminal device sets N to a predefined value by default.
    [0142] [0142] In an implementation, if the configured number of multiplexed ROs per frequency division is F3, in this case, the number N of sync signal blocks (or groups of sync signal blocks) associated with an RO must be a factor of F3 or an integer that is not greater than the number of sync signal blocks actually transmitted (or sync signal block groups). The terminal device does not want the base station to set another value. Alternatively, if the base station sets another value, the terminal device sets N to a predefined value by default.
    [0143] [0143] In an implementation, if the number of multiplexed ROs per frequency division configured is F4, in that case, the number N of sync signal blocks (or groups of sync signal blocks) associated with an RO must be one factor of F4 or an integer that is not greater than the amount of sync signal blocks actually transmitted (or sync signal block groups). The terminal device does not want the base station to set another value. Alternatively, if the base station sets another value, the terminal device sets N to a predefined value by default.
    [0144] [0144] In another implementation, the network device can specify the maximum number of sync signal blocks associated with an RO such as 16 or 8. The network device can configure an amount of ROs based on an amount of signal blocks of synchronization and a number of groups of blocks of synchronization signals. In a configuration method, the number of blocks of sync signals that can be associated with an RO and the number of groups of sync blocks that can be associated with an RO each is 1 / F, 1/2, 1 , 2, 3 or 4, 1 group, 2 groups, 3 or 4 groups or all groups. Quantities can be represented using 3 bits. The value 3 or 4 indicates that when the number of blocks of synchronization signals actually transmitted in a group is 3 or 6, a value is set to 3; or when the number of blocks of sync signals actually transmitted or the number of blocks of sync signals actually transmitted in a group is 4 or 8, a value is set to 4. In a configuration method, the number of blocks of signals of synchronization that can be associated with an RO and the number of groups of blocks of synchronization signals that can be associated with an RO are 1 / F, 1/2, 1, 2, 3, 4 or all. Quantities can be represented using 3 bits. In a configuration method, the number of blocks of synchronization signals that can be associated with an RO is classified into two types. A first type is many to one, which indicates that the number of sync signal blocks associated with an RO is a fractional value, to be specific, a plurality of sync signal blocks is associated with an RO. The number of sync signal blocks associated with an RO can be 1 / F, 1/2 and 2 / F, or it can be 1 / F and 1/2, or it can be 1 / F and 2 / F, or it can be be 1 / F. This part of the configuration can be related to a value of F. A second type is that an RO is associated with one or more blocks of synchronization signals and is one for many and one for one. A value set in the one-to-many way can be based on the number of sync signal blocks actually transmitted or is related to an amount of all sync signal blocks in a sync signal group. The values that can be set include 1, 2, 3, 4, 5, 6, 7 and 8, where 5, 6 and 7 can be set together with 4 or 8. When 5, 6 and 7 are set together with 8, the number of blocks of sync signals that can be associated with an RO is a group or All. 3 and 4 can be configured together, or 3 and 4 can also be configured together with 5. In this case, the values that can be configured are 1, 2, 4 and all, or 1, 2, 3 and all, or 1, 2, Z and all, where Z indicates 3 or 4, and is determined based on the number of blocks of synchronization signals actually transmitted. All indicate the total number of sync blocks and sync block groups, or indicate the number of all sync blocks in a sync block group. When an RO is associated with one or more groups of sync signal blocks, the network device can configure an RO to associate with N groups, where a value of N can be 1, 2, 3, 4, 5, 6, 7 or 8. During configuration, the network device can configure N as 1 group or all groups, or configure N as 1 or 2 or configure N as 1 or (2 or 3). The network device can configure all three types, or configure only the first two.
    [0145] [0145] The network device may alternatively configure the number of synchronization signal blocks associated with an RO and the number of random access preambles associated with a synchronization signal block. In other words, a number of random access preambles associated with an RO is configured based on the number of blocks of synchronization signals associated with an RO, as shown in Table 3, where NRO indicates a number of ROs, NSS indicates an amount of SSs, and NP indicates the number of random access preambles associated with a block of synchronization signals. Alternatively, some data in Table 3 can be configured together. For example, when the number of random access preambles associated with an RO is less than or equal to 4 or 1, an amount of data bits for the number of random access preambles associated with a block of sync signals is 4. When the number of sync signal blocks associated with an RO is greater than 4 or 1, indicating that some data bits for the amount of random access preambles associated with a sync signal block can be used to indicate the number of blocks synchronization signals associated with an RO.
    [0146] [0146] According to the communications method provided in this modality of this request, a time-frequency location of a random access resource associated with each downlink synchronization signal is indicated, so that the terminal device obtains, through downlink synchronization, a time-frequency location to send an uplink random access signal, to prevent a blind attempt from the terminal device and a beam mismatch from the network device from occurring when the network device receives a random access, thereby improving efficiency.
    [0147] [0147] In a long term evolution (LTE) communications system, when a terminal device sends a random access signal, it is not considered whether a time-frequency resource to send the random access signal enters in conflict with a time-frequency resource for an uplink signal configured periodically or semi-statically or statically. When the terminal device sends the periodic or semistatic uplink signal statically, it is not considered whether the time-frequency resource to send the periodically or semistatic uplink signal configured or statically conflicts with the time-frequency resource to random access. As a result, the random access signal or the uplink signal configured periodically or semi-statically or statically is interfered with, and the signal receiving performance deteriorates.
    [0148] [0148] Therefore, it is necessary to consider a time-frequency resource conflict problem when the forward uplink signal is sent.
    [0149] [0149] The modalities of this request provide another method and communication device, so that a terminal device sends an uplink signal based on indication of time-frequency resource indication. In this way, a time-frequency resource conflict between uplink signals can be avoided and signal reception performance is improved.
    [0150] [0150] Figure 5 is a schematic diagram of an interaction process of another method of communications according to one modality of this request. The method can include the following steps:
    [0151] [0151] S501: A network device sends the first information and / or the second information to a terminal device. The terminal device receives the first information and / or the second information sent by the network device. The first information is used to instruct the sending of a first uplink signal in a first time-frequency resource; and / or second information is used to instruct the sending of a second uplink signal on a second time-frequency resource.
    [0152] [0152] S502: The network device / device - terminal additionally performs any step below: when a third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second ones information, the terminal device sends the first uplink signal to the network device on a different time-frequency resource than the third time-
    [0153] [0153] In this mode, the first uplink signal is at least one of the following: a periodic signal (periodic), a semistatic signal (semi-static), a semi-persistent signal (semi-persistent), a poll reference signal sounding reference signal, SRS, a periodic demodulation reference signal, DMRS, a periodic physical uplink shared channel, PUSCH signal, a control channel signal periodic physical uplink control channel, PUCCH) and a dynamic scaling / configuration signal; and the second uplink signal is a random access signal. The first uplink signal (that is, an uplink signal configured periodically or semi-statically or statically) is usually configured by the network device. The uplink signal sending time and frequency resource information of the first uplink signal may or may not be indicated using a downlink control channel. Alternatively, some uplink signal sending time and frequency resource information from the first uplink signal can be indicated using a downlink control channel, and other time and frequency information is specified in advance using RRC signaling, a MAC CE or an order from PDCCH. The information specified in advance occurs periodically in terms of time. The random access signal is used for uplink synchronization. A conflict between the time-frequency resources to send the first uplink signal and the second uplink signal must be reduced most of the time or it must not exist.
    [0154] [0154] In practice, the first uplink signal generally occupies more time resources and / or frequency resources (bandwidth), and the time and frequency locations of the second uplink signal are cell-level settings. As a result, overlapping or partial overlapping of time and frequency resource locations between the first uplink signal and the second uplink signal cannot be avoided. In some cases, changing the time and frequency locations of the second uplink signal requires a relatively long time or relatively high overloads. Therefore, scaling the first uplink signal at the time and frequency locations of the second uplink signal should be avoided as much as possible. If an overlap or partial overlap cannot be avoided, drilling or not sending an overlapping part of one of the signals is considered.
    [0155] [0155] In this mode, before sending the first uplink signal and / or the second uplink signal, the terminal device receives the first information and / or the second information sent by the network device. The first information is used to instruct to send the first uplink signal on the first time-frequency resource;
    [0156] [0156] Specifically, the S501 includes: receiving, by the terminal device, using at least one type of the following information, the first information and / or the second information sent by the network device, where the at least one type of the following information includes: system information, radio resource control (RRC), a downlink control channel and a MAC CE.
    [0157] [0157] After the terminal device receives the first information and / or the second information, the following various implementations for sending the first uplink signal and / or the second uplink signal are included based on specific cases:
    [0158] [0158] In an implementation, when the third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second information, the terminal device sends the first uplink signal. the network device on a time-frequency resource other than the third time-frequency resource on the first time-frequency resource; and the network device receives the first uplink signal that is sent by the terminal device in the time-frequency resource other than the third time-frequency resource in the first time-frequency resource. Specifically, a conflicting time-frequency resource between the first time-frequency resource and the second time-frequency resource is the third time-frequency resource. If the terminal device does not consider a time-frequency resource conflict and sends the first uplink signal directly on the first time-frequency resource, because the first time-frequency resource conflicts with the second time-frequency resource used to send the second uplink signal, signal reception performance can be affected when the network device receives the first uplink signal and / or the second uplink signal. Therefore, the terminal device sends the first uplink signal to the network device on the time-frequency resource other than the third time-frequency resource on the first time-frequency resource, and the network device receives the first link signal. ascending sent by the terminal device in the time-frequency resource other than the third time-frequency resource in the first time-frequency resource. To be specific, the conflicting time-frequency resource is perforated, no signal is transmitted in that conflicting time-frequency resource, and the rate match is calculated based on a actually transmitted time-frequency resource. In this way, the signal receiving performance of the first uplink signal and / or the second uplink signal can be improved.
    [0159] [0159] In another implementation, when the fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, the terminal device sends the second uplink signal. the network device in the time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource; and the network device receives the second uplink signal which is sent by the terminal device in the time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource. Specifically, a conflicting time-frequency resource between the second time-frequency resource and the first time-frequency resource is the fourth time-frequency resource. If the terminal device does not consider a time-frequency resource conflict and sends the second uplink signal directly to the second time-frequency resource, because the second time-frequency resource conflicts with the first time-frequency resource used to send the first uplink signal, signal reception performance can be affected when the network device receives the first uplink signal and / or the second uplink signal. Therefore, the terminal device sends the second uplink signal to the network device on the time-frequency resource other than the fourth time-frequency resource on the second time-frequency resource, and the network device receives the second link signal. ascending sent by the terminal device in the time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource. In this way, the signal receiving performance of the first uplink signal and / or the second uplink signal can be improved.
    [0160] [0160] In yet another implementation, when the third time-frequency resource in the first time-frequency resource indicated by the first information overlaps the fourth time-frequency resource in the second time-frequency resource indicated by the second information, the device terminal sends the first uplink signal to the network device in the first time-frequency resource, and / or the terminal device sends the second uplink signal to the network device in the second time-frequency resource; and the network device receives the first uplink signal sent by the terminal device in the first time-frequency resource and / or the network device receives the second uplink signal sent by the terminal device in the second time-frequency resource. Specifically, an application scenario of this implementation is that the terminal device sends the first uplink signal and / or the second uplink signal using a first type of a transmission precoding type. The type of transmission pre-coding includes the first type and a second type. When the transmission pre-coding type is the first type, the transmission pre-coding type corresponds to a single carrier, for example, DFTs-OFDM and, on the other hand, a single linear filtering carrier. When the transmission pre-coding type is the second type, the transmission pre-coding type corresponds to a multiport, for example, OFDM. When the transmission type pre-encoding of the first type is used to send an uplink signal, a peak-to-average power ratio (PAPR) increases if no uplink signal is present. is sent to a conflicting time-frequency resource. Therefore, in this modality, for example, in the scenario (certainly, the scenario can alternatively be another scenario) in which the type of transmission pre-coding of the first type is used to send an uplink signal, when the third time resource -frequency in the first time-frequency resource indicated by the first information overlaps the fourth time-frequency resource in the second time-frequency resource indicated by the second information, avoid signal interference for the first uplink signal and the second uplink may not be considered, and the terminal device sends the first uplink signal on the first time-frequency resource and / or sends the second uplink signal on the second time-frequency resource. The network device receives the first uplink signal which is sent by the terminal device in the first time-frequency resource, and / or the network device receives the second uplink signal which is sent by the terminal device in the second time resource. -frequency.
    [0161] [0161] It should be noted that the same terminal device can send the first uplink signal and the second uplink signal at the same time, or it can send any of the first uplink signal and the second uplink signal in a time, in other words, to send the first uplink signal and the second uplink signal at different times. When there is a plurality of terminal devices on the network and a time-frequency resource of an uplink signal can be shared by the plurality of terminal devices, for example, a time-frequency resource of the second uplink signal is shared and is a random access signal, in this case, the plurality of terminal devices send different uplink signals, for example, a terminal device 1 sends the first uplink signal and a terminal device 2 sends the second uplink signal. In this case, the terminal device 1 can send the first uplink signal in a manner described in any of the previous embodiments, and the terminal device 2 can send the second uplink signal in a manner described in any of the previous embodiments. The network device receives a corresponding uplink signal in a corresponding way. To be specific, if terminal device 1 does not send a signal at a location of the third time-frequency resource that overlaps the time-frequency resource of the first uplink signal and the time-frequency resource of the second uplink signal, the network device needs to perform rate matching for the location of the third time-frequency resource when receiving the first uplink signal from terminal device 1. Similarly, if terminal device 2 does not send any signal at a location of the fourth time-frequency resource that is common for the time-frequency resource of the second uplink signal and the time-frequency resource of the first uplink signal, the network device must perform rate matching for the location of the fourth time-frequency resource when receiving the second uplink signal from terminal device 2.
    [0162] [0162] Certainly, the network device can also indicate whether it is considered to avoid signal interference on the first uplink signal and the second uplink signal and whether to send an uplink signal on a conflicting time-frequency resource. Therefore, in addition, the method additionally includes: sending, via the network device, third information to the terminal device; and receiving, by the terminal device, the third information, where the third information includes a type of uplink signal transmission pre-encoding, and the type of uplink signal transmission pre-encoding includes a first type and an second type; and sending, through the terminal device, an uplink signal to the network device based on the first information, the second information and the third information; and receiving, by the network device, the uplink signal.
    [0163] [0163] In other words, in this implementation, the network device sends the third information, to indicate to the terminal device a type of transmission pre-coding to send an uplink signal.
    [0164] [0164] Additionally, the network device / terminal device additionally performs any steps below: when the uplink signal transmission pre-encoding type is the first type, and / or the third time-frequency resource in the first resource time-frequency indicated by the first information, overlaps with the fourth time-frequency resource in the second time-frequency resource indicated by the second information, the terminal device sends the first uplink signal to the network device in the first time- frequency, and / or the terminal device sends the second uplink signal to the network device on the second time-frequency resource; and the network device receives the first uplink signal which is sent by the terminal device in the first time-frequency resource and / or the network device receives the second uplink signal which is sent by the terminal device in the second time resource -frequency; or when the uplink signal transmission pre-coding type is the second type, and the third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by secondly, the terminal device sends the first uplink signal to the network device in a different time-frequency resource than the third time-frequency resource in the first time-frequency resource; and the network device receives the first uplink signal that is sent by the terminal device in the time-frequency resource other than the third time-frequency resource in the first time-frequency resource; or when the uplink signal transmission pre-coding type is the second type, and the fourth time-frequency resource of the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, the terminal device sends the second uplink signal to the network device in a different time-frequency resource than the fourth time-frequency resource in the second time-frequency resource; and the network device receives the second uplink signal which is sent by the terminal device in the time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource.
    [0166] [0166] If the uplink signal transmission pre-encoding type is the second type, the terminal device must consider a time-frequency resource conflict or signal interference between the first uplink signal and the second signal uplink link. To be specific, the terminal device sends the first uplink signal to the network device on a time-frequency resource other than the third time-frequency resource on the first time-frequency resource and the network device receives the first signal uplink sent by the terminal device in the time-frequency resource other than the third time-frequency resource in the first time-frequency resource; and the terminal device sends the second uplink signal to the network device on a different time-frequency resource than the fourth time-frequency resource on the second time-frequency resource, and the network device receives the second uplink signal. sent by the terminal device in the time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource.
    [0167] [0167] In this way, the PAPR performance of the transmission pre-coding of the first type is not affected, and the impact on the PAPR performance of the transmission pre-coding of the second type is small. Additionally, signal reception performance is improved because no uplink signal is sent over a conflicting time-frequency resource.
    [0168] [0168] Alternatively, the network device can additionally indicate whether to send the first uplink signal and / or the second uplink signal on a conflicting time-frequency resource, that is, to indicate to the terminal device whether to execute a step in S502 or which step in S502 needs to be performed. In the specific implementation, the network device can indicate, to the terminal device in the system information, an RRC message, a MAC CE, a PDCCH, a control channel to schedule a random access response (msg2) or an access response (random access response, RAR) carried in msg2, the first uplink signal and / or the second uplink signal is sent in a conflicting time-frequency resource. For example, the indication may be 1-bit information, where "1" indicates that sending an uplink signal on a conflicting time-frequency resource is avoided (or "1" indicates that sending a link signal upstream in a conflicting time-frequency resource is avoided when the transmission pre-coding type is the second type, ie OFDM) and "0" indicates that sending an uplink signal in a time- conflicting frequency need not be avoided. Alternatively, "O" indicates that sending an uplink signal on a conflicting time-frequency resource is avoided (or "O" indicates that sending an uplink signal on a conflicting time-frequency resource is avoided. when the type of transmission pre-coding is the second type, ie OFDM), and "1" indicates that sending an uplink signal on a conflicting time-frequency resource need not be avoided. Previous system information may include physical broadcast channel (PBCH) transmission system information, or system information from another channel transmission or user request-based transmission system information. The RAR carried in the previous msg2 can be included in a MAC header or in a MAC CE.
    [0169] [0169] According to the communications method provided in this modality of this request, the terminal device sends an uplink signal based on the indication information of the time-frequency resource. In this way, a time-frequency resource conflict between uplink signals can be avoided and signal reception performance is improved. Specifically, the terminal device determines the location of a random access time-frequency resource based on indication information. When sending an uplink signal, if an uplink time-frequency resource conflicts with a random access time-frequency resource, the terminal does not send the uplink signal on a time-frequency resource of the random access feature. Correspondingly, upon receiving an uplink signal, the network device must perform rate matching based on an uplink signal's random access resource time-frequency location and a resource's time-frequency resource location. random access.
    [0170] [0170] In another modality, a current protocol supports the transmission of up to 4, 8 or 64 blocks of synchronization signals based on different frequency bands. In a real system, the network device possibly transmits less than 4, 8 or 64 blocks of sync signals. Therefore, the prior art supports the network device in the notification of the terminal device of blocks of synchronization signals actually transmitted, so that the terminal device performs a function as downlink data rate correspondence, i.e., these signal blocks. Indicated transmitted synchronization times are staggered. For example, as shown in Figure 6, in NR, a specific time location of a block of actually transmitted sync signals is indicated using RMSI bit mapping information (also known as bitmap, bitmap). For a frequency band greater than 6 GHz, there are up to 64 blocks of sync signals in a set of SS bursts. The 64 blocks of sync signals are divided into a maximum of 8 groups, and 8-bit information is used to indicate whether groups of sync blocks are transmitted. Each group has a maximum of 8 sync signal blocks, and uses 8-bit information to indicate whether the sync signal blocks have been sent. A total of 8 + 8 = 16 bits of information is used for indication. For a frequency band below 6 GHz, a set of SS bursts has a maximum of 8 blocks of sync signals and uses 8-bit information for indication. For example, for the frequency band greater than 6 GHz, the information on the actual transmission of the frequency band sync signal blocks is 1101100110100011, and information on the frequency band groups is 11011001, indicating that groups of frequency sync signals are O, 1, 3, 4 and 7 actually transmitted sync signal blocks and other groups did not actually transmit sync signal blocks. The information within a group is 10100011, indicating that the synchronization signal blocks O, 2, 6 and 7 within the group are transmitted.
    [0171] [0171] Specific notification methods are as follows:
    [0172] [0172] (1) Indication in the system information:
    [0173] [0173] When there are 64 blocks of sync signals, the 64 blocks of sync signals are divided into 8 groups, and each group has 8 blocks of sync signals. In a specific indication, an 8-bit bitmap is used to indicate which group is transmitted, and another 8-bit bitmap is used to indicate which block of sync signals in the group is transmitted.
    [0174] [0174] When there are 8 sync signal blocks, an 8-bit bitmap is used directly to indicate which sync signal block is transmitted.
    [0175] [0175] When there are 4 sync signal blocks, a 4-bit bitmap is used directly to indicate which sync signal block is transmitted.
    [0176] [0176] (2) Indication on a MAC-CE and / or RRC and / or PDCCH signaling:
    [0177] [0177] When there are 64/8/4 sync signal blocks, a 64/8/4 bit bitmap is used directly to indicate which sync signal block is transmitted.
    [0178] [0178] Each block of synchronization signals is associated with a specific RACH resource. For a specific association configuration method, see related embodiments of the present invention. The details are not described here again. Based on this association, the network device can send a RACH resource pattern from a specific conflicting or non-conflicting resource to a connected mode or idle terminal device based on the existing sync signal block indication above . For indication, a single carrier or multiport can be used to send only uplink data or any waveform is suitable.
    [0179] [0179] The terminal device may determine a time-frequency resource location of an uplink signal based on at least one of the synchronization signal location information,
    [0180] [0180] Specifically, in an implementation, an indication is made based on a block of synchronization signals actually transmitted.
    [0181] [0181] The terminal device can reuse the existing indication to indicate whether it sends uplink data on a conflicting RACH resource. If an indication indicates that a block of sync signals is transmitted, the terminal device must avoid a RACH feature associated with that block of sync signals. Thus, no additional referral information is required.
    [0182] [0182] In another implementation, an indication is made based on an association relationship between a block of synchronization signals and a RACH resource.
    [0183] [0183] In the prior art, a block of synchronization signals is associated with a RACH resource, and the association of a plurality of blocks of synchronization signals with the same RACH resource is supported. Therefore, an indication can be made based on a block of synchronization signals, and the same indication can be provided for a plurality of blocks of synchronization signals associated with the same RACH resource. A specific referral method is described below:
    [0184] [0184] In yet another implementation, an indication is made based on the maximum number of blocks of synchronization signals possibly transmitted.
    [0185] [0185] The network device can transmit 64/8/4 blocks of synchronization signals based on a frequency band. It is assumed that there is a maximum of eight blocks of sync signals for a frequency band, and two blocks of sync signals are associated with the same RACH resource. Only a 4-bit instead of 8-bit indication is required, and the indication does not depend on a block of actually transmitted sync signals described above. For example, if "1001" is indicated for a user, the user cannot send uplink data on a RACH resource associated with synchronization signal blocks 1, 2, 7 and 8. Certainly, the indication may alternatively indicate that the user cannot send uplink data on a RACH resource associated with synchronization signal blocks 3, 4, 5 and 6. This depends on a specific meaning of "1" or "0" of a bit.
    [0186] [0186] In yet another implementation, an indication is made based on a block of synchronization signals actually transmitted.
    [0187] [0187] An indication made based on a block of synchronized signals actually transmitted notified by the network device can additionally reduce a number of bits. For example, it is assumed that there is a maximum of eight blocks of synchronization signals for a frequency band. However, according to an indication of the network device, only 6 of the 8 sync signal blocks (assuming the sync signal blocks 1, 2, 5, 6, 7 and 8 are actually transmitted) are actually transmitted, and 2 blocks of synchronization signals are associated with the same RACH resource. In this case, only a 3-bit indication is required. For example, if "001" is indicated for a user, the user cannot send uplink data on a RACH resource associated with synchronization signal blocks 7 and 8. Certainly, the indication may alternatively indicate that the user cannot send uplink data on a RACH resource associated with 1,2,5e sync signal blocks
    [0188] [0188] In other words, an indication is made based on the length of time-frequency of a random access resource associated with a block of synchronization signals actually transmitted. For example, if the time-frequency resource length of the random access resource associated with the block of sync signals actually transmitted (or a number of random access time-frequency resources) is K, a bitmap with a length of K is used for indication, where K is an integer, for example, K = 1 to 128. In yet another implementation, an indication is performed based on a RACH configuration.
    [0189] [0189] A RACH resource is configured using the RACH configuration information in a system message, and is repeated according to a specific period, for example, 10/20/40/80/160 ms. Therefore, a RACH resource configured in a period can be indicated directly. For example, if RACH resources are configured in X time domains, an X-bit bitmap will be used for an indication. Each bit indicates whether the terminal device needs to avoid a conflict with a RACH resource in a time domain when transmitting uplink data. A time length of the X time domains can be based on a random access preamble format and a subcarrier spacing of the random access preamble format, where X is an integer, for example, X = 1 to 1024.
    [0190] [0190] For another example, there are F random access resources multiplexed by frequency division in X time domains, an indication can be made based on at least one of X and F. For example, a bitmap of F- bits is indicated to indicate that a frequency location conflict indicated in the bitmap F-bits needs to be processed for an uplink signal, where F is an integer, for example, F = 1 to 128. For another example, a Y-bit bitmap is indicated, to indicate that a time-frequency location conflict indicated in the Y-bit bitmap needs to be processed for an uplink signal. For example, Y = FxX.
    [0191] [0191] It should be noted that the RACH configuration information includes a physical random-access channel (PRACH) configuration index and a random access preamble subcarrier spacing field. The PRACH configuration index and the random access preamble subcarrier spacing field jointly determine the random access time resource information and / or a random access preamble subcarrier spacing. For example, the random access preamble subcarrier spacing field is 1 bit long. When a frequency band for random access is a first frequency band (for example, less than 6 GHz), time information is determined based on the PRACH configuration index, the random access preamble subcarrier spacing field, and a first predefined random access configuration table. If the random access preamble format includes information about the random access preamble subcarrier spacing, the random access preamble subcarrier spacing field can still be used to indicate time information for a random access resource. For example, when the random access preamble format is the preamble format 0 through 3, a first time is indicated if the random access preamble subcarrier spacing field is 0, and a second time is indicated if the field random access preamble subcarrier spacing is 1. For example, as shown in Table 3, a preamble format F can be preamble formats O to 3 defined in 5G, and the random access preamble subcarrier spacing can be determined based on a value of that format. P can be understood as a random access configuration period or a random access resource period, and a value of P can be represented using milliseconds. For example, P is any one of 1 ms, 5 ms, 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, 320 ms and 640 ms, where ms indicates a unit of time in milliseconds. Alternatively, a value of P can be represented using a number of frames, for example, 0.5, 1, 2, 4, 8, 16, 32, 64, 128 or 256 frames, where each frame is 10 ms. Q indicates a time location (for example, a frame or a subframe) in which the random access feature appears in a period (for example, a random access configuration period P). For example, when P is greater than 1, Q can be O to P - 1. A subframe index is a time location in which a frame appears over a period. The length of a subframe is 1 millisecond, and an initial symbol can be any value from 0 to 13. Table 4 Random access configuration table (first frequency band) Format Index | x y Symbol Index preamble configuration subframe | Initial OFDM random access or and NO
    [0192] [0192] In Table 4, "sex modx =>,
    [0193] [0193] For example, when a random access preamble format specified by a random access setup index is preamble formats O to 3, it indicates that the random access setup period P is a first time value if the random access preamble sub carrier spacing field is O, and indicates that the random access setup period P is a second time value if the random access preamble sub carrier spacing field is 1.
    [0194] [0194] For another example, when a random access preamble format specified by a random access configuration index is a preamble format from 0 to 3, this indicates that Q is the first time value if the random access preamble subcarrier is O, and indicates that Q is a second time value if the random access subcarrier spacing field is 1.
    [0195] [0195] For another example, when a random access preamble format specified by a random access configuration index has preamble formats O to 3, this indicates that N is the first time value if the subcarrier spacing field random access preamble is O, and indicates that N is a second time value if the random access preamble subcarrier spacing field is 1.
    [0196] [0196] For another example, when a random access preamble format specified by a random access configuration index has the preamble formats 0 to 3, this indicates that S is the first time value if the subcarrier spacing field random access preamble is O, and indicates that S is a second time value if the random access preamble subcarrier spacing field is 1.
    [0197] [0197] Figure 7 is a schematic structural diagram of a communications device 700 according to one embodiment of this application. Apparatus 700 may include a receiving unit 71 and a processing unit 72.
    [0198] [0198] Receiving unit 71 is configured to obtain downlink synchronization signal block index information, for example, receiving a downlink signal, where the downlink signal carries the signal block index information synchronization.
    [0199] [0199] Receiving unit 71 is additionally configured to receive information used to indicate an association relationship between a random access RO occasion and a block of synchronization signals.
    [0200] [0200] Processing unit 72 is configured to obtain the synchronization signal block index information and the association relationship between an RO random access occasion and a synchronization signal block from the information received by the receiving unit 71 and access a network device in an RO corresponding to the sync signal block index information.
    [0201] [0201] The association relationship between an RO and a block of sync signals is at least one of the following: a number of blocks of sync signals associated with an RO is at least 1 / F, or is P at most, where F is a quantity of ROS in frequency domain, and P is related to a quantity of blocks of synchronization signals actually transmitted; and / or N blocks of synchronization signals or N groups of blocks of synchronization signals are associated with an RO in the frequency domain or with all the ROs in the frequency domain; and / or the first RACH resources in each X RACH resource configuration periods Y are associated with the same sync signal blocks when a random access resource configuration period is P, where P and X are integers and Y is equal to P multiplied by XxX.
    [0202] [0202] In an implementation, when the association relationship is that N blocks of sync signals or N groups of sync blocks are associated with an RO in the frequency domain, or are associated with all ROs in the frequency domain, receiving unit 71 is further configured to receive indication information from the network device, where indication information is used to indicate that the N sync signal blocks or N sync signal block groups are associated with an RO in frequency domain, or are used to indicate that the N sync signal blocks or N sync signal block groups are associated with all ROs in the frequency domain.
    [0203] [0203] In another implementation, when a random access resource configuration period is P, and the first RACH resources in each
    [0204] [0204] In yet another implementation, a value of Y is 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, 320 ms or 640 ms.
    [0205] [0205] In yet another implementation, a value of X is related to a number of blocks of sync signals or a value of X is related to a number of random access resources in a random access resource configuration period, or a value of X is 1,2,4,8 or
    [0206] [0206] In yet another implementation, when a random access resource configuration period is P, and the first random access resources in each X random access resource configuration periods are associated with the same blocks of synchronization signals, if there is one or more random access resources remaining, the communications device does not access the network device on the remaining random access resource.
    [0207] [0207] In an additional implementation, when a random access resource configuration period is P, and the first random access resources in each X random access resource configuration periods are associated with the same blocks of synchronization signals, if there is one or more random access resources remaining, the one or more remaining random access resources are associated starting from the first block of sync signals or the last block of sync signals or the next block of sync signals from a block of final synchronization signals in the previous X periods, or any one or more of the three previous association relations are used in different X periods.
    [0208] [0208] In a still further implementation, when the association relationship is that N blocks of sync signals or N groups of sync signals blocks are associated with an RO in the frequency domain or are associated with all ROs in the domain of frequency, if an amount N of sync signal blocks or groups of sync signal blocks actually transmitted cannot be exactly divided by an amount, configured by the network device, of sync signal blocks associated with an RO, after a number of sync signal blocks or groups of sync signal blocks to be associated with a corresponding RO, where the amount is an integer multiple of the amount configured by the network device, a remaining sync signal block, or a group of blocks of synchronization signals are associated with one or more other ROs.
    [0209] [0209] According to the communication device provided in this modality of this request, a time-frequency location of a random access resource associated with each downlink synchronization signal is indicated, so that a terminal device obtains, through downlink synchronization, a time-frequency location to send an uplink random access signal, to prevent a blind attempt from the terminal device and a beam mismatch from the network device from occurring when the network device receives a random access, thereby improving efficiency.
    [0210] [0210] Figure 8 is a schematic structural diagram of another communications device according to one embodiment of this application. Apparatus 800 may include a sending unit 81 and a receiving unit 82.
    [0211] [0211] Sending unit 81 is configured to send block index information of downlink sync signals to a terminal device, for example, sending unit 81 sends a downlink sync signal block, where the block synchronization signals block information index of synchronization signals block.
    [0212] [0212] The sending unit 81 is additionally configured to send information used to indicate an association relationship between a random access resource RO and a block of synchronization signals to the terminal device. The sending unit is additionally configured to send RACH random access channel configuration information to the terminal device. For details, see the descriptions in the previous modalities.
    [0213] [0213] Receiving unit 82 is configured to receive a random access signal that is sent by the terminal device in an RO corresponding to the synchronization signal block index information.
    [0214] [0214] According to the communication device provided in this modality of this request, a time-frequency location of a random access resource associated with each downlink synchronization signal is indicated, so that the terminal device obtains, through downlink synchronization, a time-frequency location to send an uplink random access signal, to prevent a blind attempt from the terminal device and a beam mismatch from a network device from occurring when the network device receives a signal access, thereby improving efficiency.
    [0215] [0215] Figure 9 is a schematic structural diagram of yet another communications device according to one embodiment of this application. Apparatus 900 may include a receiving unit 91 and a sending unit 92.
    [0216] [0216] Receiving unit 91 is configured to receive the first information and / or the second information sent by a network device, where the first information is used to instruct the sending of a first uplink signal in a first resource. time-frequency; and / or second information is used to instruct the sending of a second uplink signal on a second time-frequency resource.
    [0217] [0217] Sending unit 92 is configured for: when a third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second information, send the first uplink to the network device on a time-frequency resource other than the third time-frequency resource on the first time-frequency resource; or additionally configured for: when a fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, send the second uplink signal to the network device in a time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource; or additionally configured for: when a third time-frequency resource in the first time-frequency resource indicated by the first information overlaps a fourth time-frequency resource in the second time-frequency resource indicated by the second information, send the first link signal upstream to the network device in the first time-frequency resource and / or send the second uplink signal to the network device in the second time-frequency resource.
    [0218] [0218] In an implementation, the first uplink signal is at least one of the following: a periodic signal, a semistatic signal, a semi-persistent signal, a periodic poll reference signal, a periodic demodulation reference signal, a signal periodic physical uplink shared channel, a periodic physical uplink control channel signal, and a dynamic scaling / configuration signal; and the second uplink signal is a random access signal.
    [0219] [0219] In another implementation, the receiving unit 91 is specifically configured to receive, using at least one type of the following information, the first information and / or the second information sent by the network device, where the at least one type of The following information includes: system information, radio resource control signaling, a downlink control channel and an access control element for MAC CE media.
    [0220] [0220] In yet another implementation, the receiving unit 91 is additionally configured to receive third information, where the third information includes a type of uplink signal transmission pre-encoding, and the type of uplink transmission pre-encoding. uplink signal includes a first type and a second type; and the sending unit 92 is further configured to send an uplink signal to the network device based on the first information, the second information and the third information.
    [0221] [0221] In yet another implementation: when the uplink signal transmission pre-coding type is the first type, and / or the third time-frequency resource in the first time-frequency resource indicated by the first information, if superimposes on the fourth time-frequency resource on the second time-frequency resource indicated by the second information, the sending unit 92 is additionally configured to send the first uplink signal to the network device on the first time-frequency resource and / or the sending unit 92 is further configured to send the second uplink signal to the network device in the second time-frequency resource; or when the uplink signal transmission pre-coding type is the second type, and the third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by secondly, the sending unit 92 is further configured to send the first uplink signal to the network device in a time-frequency resource other than the third time-frequency resource in the first time-frequency resource; or when the uplink signal transmission pre-coding type is the second type, and the fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the First information, the sending unit 92 is additionally configured to send the second uplink signal to the network device on a time-frequency resource other than the fourth time-frequency resource on the second time-frequency resource.
    [0222] [0222] According to the communication device provided in this modality of this request, a terminal device sends an uplink signal based on indication of time-frequency resource indication. In this way, a time-frequency resource conflict between uplink signals can be avoided and signal reception performance is improved.
    [0223] [0223] Figure 10 is a schematic structural diagram of yet another communications device according to one embodiment of this application. The apparatus 1000 may include a sending unit 101 and a receiving unit 102.
    [0224] [0224] The sending unit 101 is configured to send the first information and / or the second information to a terminal device, where the first information is used to instruct the sending of a first uplink signal in a first time-out resource. frequency; and / or the second information is used to instruct the sending of a second uplink signal in a second time-frequency resource; and when a third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second information, the receiving unit 102 is configured to receive the first uplink signal that it is sent by the terminal device in a different time-frequency resource than the third time-frequency resource in the first time-frequency resource; or when a fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, the receiving unit 102 is configured to receive the second uplink signal that it is sent by the terminal device in a different time-frequency resource than the fourth time-frequency resource in the second time-frequency resource; or when a third time-frequency resource in the first time-frequency resource indicated by the first information overlaps a fourth time-frequency resource in the second time-frequency resource indicated by the second information, the receiving unit 102 is configured to receive the first uplink signal which is sent by the terminal device in the first time-frequency resource and / or the receiving unit 102 is configured to receive the second uplink signal which is sent by the terminal device in the second time-frequency resource. In this aspect, the terminal device sends an uplink signal based on the indication of time-frequency resource indication. In this way, a time-frequency resource conflict between uplink signals can be avoided and the signal receiving performance of a network device is improved.
    [0225] [0225] In a possible implementation, the sending unit 101 is additionally configured to send third information to the terminal device, where the third information includes a type of uplink signal transmission pre-coding, and the type of pre-coding. uplink signal transmission includes a first type and a second type; and the receiving unit 102 is further configured to receive an uplink signal which is sent by the terminal device based on the first information, the second information and the third information.
    [0226] [0226] In another possible implementation, when the uplink signal transmission pre-coding type is the first type, and / or the third time-frequency resource in the first time-frequency resource indicated by the first information overlaps the fourth time-frequency resource in the second time-frequency resource indicated by the second information, the receiving unit 102 is configured to receive the first uplink signal that is sent by the terminal device in the first time-frequency resource and / or the receiving unit 102 is configured to receive the second uplink signal that is sent by the terminal device on the second time-frequency resource; or when the uplink signal transmission pre-coding type is the second type, and the third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by secondly, the receiving unit 102 is configured to receive the first uplink signal that is sent by the terminal device on a time-frequency resource other than the third time-frequency resource on the first time-frequency resource; or when the uplink signal transmission pre-coding type is the second type, and the fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the First information, the receiving unit 102 is configured to receive the second uplink signal that is sent by the terminal device on a time-frequency resource other than the fourth time-frequency resource on the second time-frequency resource.
    [0227] [0227] According to the communication device provided in this modality of this request, the terminal device sends an uplink signal based on the indication of time-frequency resource indication. In this way, a time-frequency resource conflict between uplink signals can be avoided and the signal receiving performance of the network device is improved.
    [0228] [0228] The communications device provided in Figure 7 corresponds to the method modality in Figure 3. The communications device provided in Figure 9 corresponds to the method modality in Figure 5. All descriptions of the method modalities are applicable to the devices communications.
    [0229] [0229] The communication devices in Figure 3 and Figure 5 of this application, each can be a terminal device, or a chip or an integrated circuit mounted on a terminal device.
    [0230] [0230] That the communications device is a terminal device is used as an example. Figure 11 is a schematic structural diagram of a simplified terminal device. For ease of understanding and illustration, in Figure 11, that the terminal device is a cell phone is used as an example. As shown in Figure 11, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna and an input / output device. The processor is mainly configured to: process a communication protocol and communication data, control the terminal device, run a software program, process data from the software program, and the like. The memory is mainly configured to store the software program and data. The radio frequency circuit is mainly configured to: perform the conversion between a baseband signal and a radio frequency signal, and process the radio frequency signal. The antenna is mainly configured to receive and send radio frequency signals in the form of an electromagnetic wave. The input / output device, such as a touch screen, a display or a keyboard, is mainly configured to: receive data entered by a user and send data to the user. It should be noted that terminal devices of some types may not have the input / output device.
    [0231] [0231] When data needs to be sent, after processing the baseband into the data to be sent, the processor outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends a radio frequency signal to the outside in the form of an electromagnetic wave using the antenna. When data is sent to the terminal device, the radio frequency circuit receives a radio frequency signal using the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal to data and processes the data. To facilitate the description, Figure 11 shows only a memory and processor. In an actual terminal device product, there may be one or more processors and one or more memories. Memory can also be referred to as a storage medium, a storage device or the like. The memory can be arranged independently of the processor or it can be integrated into the processor. This is not limited to this type of order.
    [0232] [0232] In this embodiment of this request, the antenna and the radio frequency circuit that have a receive and send function can be considered as a receiving unit and a sending unit of the terminal device (or can be collectively referred to as a unit transceiver), and the processor having a processing function can be considered as a processing unit of the terminal device. As shown in Figure 11, the terminal device includes a receiving unit 111, a processing unit 112 and a sending unit
    [0233] [0233] For example, in one mode, the receiving unit 111 is configured to perform S301 and S302 in the mode shown in Figure
    [0234] [0234] For example, in another mode, the receiving unit 111 is configured to perform S501 in the mode shown in Figure 5. The sending unit 113 is configured to perform S502 in the mode shown in Figure 5.
    [0235] [0235] An embodiment of this request additionally provides a communications device. The communications device is configured to perform the previous communications method. The communications method above can be implemented in whole or in part by hardware or software. When the hardware is used for implementation, in one embodiment, the communications apparatus includes: a receiver, configured to obtain downlink synchronization signal block index information, and additionally configured to receive information used to indicate an association relationship between an occasion of random access RO and a block of synchronization signals; and a transmitter, configured to access a network device in an RO corresponding to the synchronization signal block index information. In another embodiment, the communications device includes: a receiver, configured to receive the first information and / or the second information sent by a network device, where the first information is used to instruct the sending of a first uplink signal in a first time-frequency resource, and / or the second information is used to instruct the sending of a second uplink signal in a second time-frequency resource; and a transmitter, configured for: when a third time-frequency resource in the first time-frequency resource indicated by the first information is included in the second time-frequency resource indicated by the second information, send the first uplink signal to the network on a time-frequency resource other than the third time-frequency resource on the first time-frequency resource; or additionally configured for: when a fourth time-frequency resource in the second time-frequency resource indicated by the second information is included in the first time-frequency resource indicated by the first information, send the second uplink signal to the network device in a time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource; or additionally configured for: when a third time-frequency resource in the first time-frequency resource indicated by the first information overlaps a fourth time-frequency resource in the second time-frequency resource indicated by the second information, send the first link signal upstream to the network device in the first time-frequency resource and / or send the second uplink signal to the network device in the second time-frequency resource.
    [0236] [0236] Optionally, in specific implementation, the communications device can be a chip or an integrated circuit.
    [0237] [0237] Optionally, when the communications method in the previous mode is implemented in whole or in part by software, the communications device includes: a memory configured to store a program; and a processor, configured to run the program stored by memory. When the program is executed, the communications device is enabled to implement the communications method provided in the previous mode.
    [0238] [0238] Optionally, the memory can be a physically independent unit or it can be integrated into the processor.
    [0239] [0239] Optionally, when the communications method in the previous mode is implemented in whole or in part by software, the communications device can include only one processor. A memory configured to store a program is located outside the communications device. The processor is connected to memory via a circuit / wire, and is configured to read and execute the program stored in memory.
    [0240] [0240] The processor can be a central processing unit (CPU), a network processor (network processor, NP) or a combination of a CPU and an NP.
    [0241] [0241] The processor may additionally include a hardware chip. The previous hardware chip can be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD) or a combination thereof. The previous PLD can be a complex programmable logic device (CPLD), an array of programmable field gates (field-programmable gate array, FPGA), a generic array logic (generic array logic, GAL) or any combination thereof.
    [0242] [0242] The memory can include a volatile memory, for example, a random-access memory, RAM. The memory can also include a non-volatile memory, for example, a flash memory, a hard disk drive, HDD, or a solid-state drive drive, SSD). The memory can additionally include a combination of the previous memory types.
    [0243] [0243] The communications device provided in Figure 8 corresponds to the method modality in Figure 3. The communications device provided in Figure 10 corresponds to the method modality in Figure 5. All descriptions of the method modalities are applicable to the devices communications.
    [0244] [0244] The communications device in this order can be a network device or a chip or an integrated circuit installed in a network device.
    [0245] [0245] That the communications device is a network device is used as an example. Figure 12 is a schematic structural diagram of a simplified network device. The network device includes a receiving and sending and converting radio frequency signal part and a part 122, and the receiving and sending and converting radio frequency part additionally includes a receiving unit part 121 and a sending unit part 123 (which are also collectively referred to as a transceiver unit). The radio frequency signal receiving and sending and converting part is mainly configured to: receive and send radio frequency signals and convert between a radio frequency signal and a baseband signal. Part 122 is configured primarily to: perform baseband processing, control the network device and the like. Receiving unit 121 can also be referred to as a receiver, a receiving machine, a receiving circuit or the like. Sending unit 123 can also be referred to as a sender, transmitter, transmitting machine, transmission circuit or the like. Part 122 is usually a network device control center, or it can generally be referred to as a processing unit, configured to control the network device to perform the steps performed by the network device in Figure 3 or Figure 5. For details , see related party descriptions.
    [0246] [0246] Part 122 may include one or more plates. Each card can include one or more processors and one or more memories, and the processor is configured to read and execute a program in memory, implement a baseband processing function, and control the network device. If there are a plurality of plates, the plates can be interconnected to improve the processing capacity. In an optional implementation, alternatively, the plurality of cards can share one or more processors, or the plurality of cards share one or more memories, or the plurality of cards share one or more processors at the same time.
    [0247] [0247] For example, in one mode, the sending unit 123 is configured to perform steps S301 and S302 in the mode shown in Figure 3. Receiving unit 121 is configured to perform step S303 in the mode shown in Figure 3.
    [0248] [0248] For example, in another mode, sending unit 123 is configured to perform step S501 in the mode shown in Figure 5. Receiving unit 121 is configured to perform step S302 in the mode shown in Figure 5.
    [0249] [0249] One embodiment of this request additionally provides a communications device. The communications device is configured to perform the previous communications method. The communications method above can be implemented in whole or in part by hardware or software. When the hardware is used for implementation, in one embodiment, the communications apparatus includes: a transmitter, configured to send Downlink Synchronization Block Index information to a terminal device, and additionally configured to send information used to indicate an association relationship between a random access resource RO and a block of synchronization signals; and a receiver, configured to receive a random access signal sent by the terminal device in an RO corresponding to the synchronization signal block index information. In another embodiment, the communications device includes: a transmitter, configured to send the first information and / or the second information to a terminal device; and a receiver, configured to: when a third time-frequency resource in a first time-frequency resource indicated by the first information is included in a second time-frequency resource indicated by the second information, receive a first sent uplink signal by the terminal device in a time-frequency resource other than the third time-frequency resource in the first time-frequency resource; or when a fourth time-frequency resource in a second time-frequency resource indicated by the second information is included in a first time-frequency resource indicated by the first information, it receives a second uplink signal that is sent by the terminal device in a time-frequency resource other than the fourth time-frequency resource in the second time-frequency resource; or when a third time-frequency resource on a first time-frequency resource indicated by the first information overlaps a fourth time-frequency resource on a second time-frequency resource indicated by the second information, receiving a first sent uplink signal by the terminal device in the first time-frequency resource and / or receive a second uplink signal which is sent by the terminal device in the second time-frequency resource.
    [0250] [0250] Optionally, in specific implementation, the communications device can be a chip or an integrated circuit.
    [0251] [0251] Optionally, when the communications method in the previous mode is implemented in whole or in part by software, the communications device includes: a memory configured to store a program; and a processor, configured to run the program stored by memory. When the program is executed, the communications device is enabled to implement the communications method provided in the previous mode.
    [0252] [0252] Optionally, the memory can be a physically independent unit, or it can be integrated into the processor.
    [0253] [0253] Optionally, when the communications method in the previous modality is totally or partially implemented by software, the communications device can include only one processor. A memory configured to store a program is located outside the communications device. The processor is connected to memory via a circuit / wire, and is configured to read and execute the program stored in memory.
    [0254] [0254] The processor can be a CPU, an NP or a combination of a CPU and an NP.
    [0255] [0255] The processor may additionally include a hardware chip. The hardware chip can be an ASIC, a PLD or a combination thereof. The PLD can be a CPLD, an FPGA, a GAL or any combination thereof.
    [0256] [0256] Memory can include volatile memory, such as RAM. Alternatively, the memory may include non-volatile memory, such as a flash memory, a hard disk drive, or a solid state drive. Alternatively, the memory may include a combination of the previous memory types.
    [0257] [0257] A person skilled in the art may be aware that the units and steps of the algorithm in the examples described with reference to the modalities disclosed in this specification can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed by hardware or software depends on specific applications and conditions of design restriction of technical solutions. A person skilled in the art may use different methods to implement the functions described for each particular application, but implementation should not be considered to be beyond the scope of that request.
    [0258] [0258] It can be clearly understood by a person skilled in the art that, for purposes of convenient and brief description, for a detailed work process of the system, apparatus and unit, consult a corresponding process in the method modalities. The details are not described here again.
    [0259] [0259] In the various modalities provided in this application, it should be understood that the system, apparatus and method disclosed can be implemented in other ways. For example, the type of apparatus described is merely an example. For example, the unit division is merely a logical function division and can be another division in the actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not implemented. In addition, the mutual couplings, direct couplings or communication connections displayed or discussed can be implemented using some interfaces. Indirect couplings or communication connections between devices or units can be implemented in electronic, mechanical or other forms.
    [0260] [0260] The units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one position or may be distributed over a plurality of network units. Some or all of the units can be selected based on actual requirements to achieve the objectives of the modalities solutions.
    [0261] [0261] In addition, the functional units in the modalities of this order can be integrated into a processing unit, or each of the units can exist physically alone, or two or more units can be integrated into one unit.
    [0262] [0262] All or some of the previous modalities can be implemented by software, hardware, firmware or any combination thereof. When software is used to implement the modalities, the modalities can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the procedure or functions according to the modalities of this order are all or partially generated. The computer can be a general purpose computer, a dedicated computer, a computer network, or other programmable devices. Computer instructions can be stored on computer-readable storage media or can be transmitted using computer-readable storage media. Computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center in a wired manner (for example, a coaxial cable, an optical fiber or a subscriber line digital (Digital Subscriber Line, DSL)) or wireless (for example, infrared, radio or microwave). Computer-readable storage media can be any usable media accessible by a computer or a data storage device, such as a server or a data center, integrating one or more usable media. Usable media can be a magnetic media (for example, a floppy disk, a hard drive or a magnetic tape), an optical media (for example, a digital versatile disc (digital versatile disc, DVD)), a semiconductor media (for example , a solid state drive, or similar.
    [0263] [0263] A person of ordinary skill in the art can understand that all or some of the method processes in the embodiments can be implemented by a computer program instructing related hardware. The program can be stored on a computer-readable storage medium. When executed, the program may include the procedures of the previous method modalities. Previous storage media includes: any media that can store program code, such as read-only memory, ROM, random access memory, RAM, magnetic disk or disk optical.
    权利要求:
    Claims (51)
    [1]
    1. A communications apparatus, comprising: a receiving unit, configured to receive at least one block of synchronization signals, information used to indicate a mapping relationship between a block of synchronization signals and a random access occasion, and information of random access channel (RACH) configuration; and a processing unit, configured to determine a random access association period Y based on the information received by the receiving unit, wherein the random access association period Y comprises X periods of random access configuration P, and a value of X is any one of 1, 2,4,8, and 16.
    [2]
    Apparatus according to claim 1, wherein the value of X is related to an amount of the synchronization signal blocks.
    [3]
    Apparatus according to claim 1 or 2, in which the value of X is related to a number of random access occasions comprised in a random access configuration period P.
    [4]
    Apparatus according to any one of claims 1 to 3, wherein a value of the random access association period Y is 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, 320 ms, or 640 ms.
    [5]
    Apparatus according to any one of claims 1 to 4, wherein if there are one or more random access occasions remaining in the random access association period Y, the one or more remaining random access occasions are not used to access the network device.
    [6]
    Apparatus according to any one of claims 1 to 5, wherein if there are one or more random access occasions remaining in the random access association period Y, the one or more remaining random access occasions are not associated with any sync signal block or any group of sync signal blocks.
    [7]
    Apparatus according to any one of claims 1 to 6, wherein the number of random access occasions in a random access configuration period P is 1, 2.4, or 8.
    [8]
    Apparatus according to any one of claims 1 to 7,
    wherein the RACH configuration information comprises a physical random access channel configuration index (PRACH) configuration index and a random access preamble subcarrier spacing.
    [9]
    9. Apparatus according to claim 8, in which the PRACH configuration index indicates one or more of the following items: a preamble format, a random access configuration period, a frame in which a random access resource is located, a subframe index, and an initial orthogonal frequency division (OFDM) multiplexing symbol.
    [10]
    Apparatus according to any one of claims 1 to 9, wherein the maximum number of blocks of sync signals mapped for a random access occasion is 8 or 16.
    [11]
    Apparatus according to any one of claims 1 to 10, wherein when a number of blocks of synchronization signals associated with a random access occasion is N, and a number of random access preambles based on contention or based on non-containment or all random access preambles on a random access occasion is N1, an N2 amount of random access preambles mapped to a block of synchronization signals is not greater than floor (N1 / N) or N1 / N, in that floor indicates rounding down to a nearest whole number; wherein a value of N1 is any one or more values within 4, 8, 12, 16, 20, 24,28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 128, and 256.
    [12]
    Apparatus according to any one of claims 1 to 11, wherein the processing unit is configured to determine a granularity of a number of preambles of random access based on the number of blocks of synchronization signals mapped for an occasion of random access, where the preamble of random access is used to access the network device.
    [13]
    Apparatus according to any one of claims 1 to 12, in which in a period of random access association Y, blocks of synchronization signals or groups of blocks of synchronization signals are cyclically mapped for occasions of random access.
    [14]
    Apparatus according to any one of claims 1 to 13, in which at different periods of random access association Y, the first occasion of random access is mapped to the first block of synchronization signals.
    [15]
    15. Communications method, comprising: obtaining block index information of synchronization signals; receiving information used to indicate a mapping relationship between a random access occasion and a block of synchronization signals; and accessing a network device based on information about the mapping relationship using a random access occasion mapped to the sync signal block index information; where in a random access association period Y, the sync signal block is mapped to the random access occasion, the random access association period Y comprises X periods of random access configuration P, and a value of X is 1, 2, 4.8, or 16.
    [16]
    16. The method of claim 15, wherein the value of X is related to an amount of the synchronization signal blocks.
    [17]
    17. The method of claim 15 or 16, wherein the value of X is additionally related to a number of random access occasions comprised in a random access configuration period P.
    [18]
    18. The method of any one of claims 15 to 17, wherein a value of the random access association period Y is 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, 320 ms, or 640 ms.
    [19]
    19. Method according to any one of claims 15 to 18, wherein if there are one or more random access occasions remaining in the random access association period Y, the one or more remaining random access occasions are not used to access the terminal device.
    [20]
    20. Method according to any one of claims 15 to 19, wherein if there are one or more random access occasions remaining in the random access association period Y, the one or more remaining random access occasions are not associated with any sync signal block or any group of sync signal blocks.
    [21]
    21. The method of any one of claims 15 to 20,
    where the number of random access occasions in a random access configuration period P is 1,2,4, or 8.
    [22]
    22. The method of any one of claims 15 to 21, wherein the value of X or Y is related to the following three parameters: a number of blocks of sync signals or groups of blocks of sync signals actually transmitted, a number of sync blocks or groups of sync blocks mapped to a random access occasion, and a number of random access occasions comprised in a random access configuration period P.
    [23]
    23. The method of any one of claims 15 to 22, wherein the maximum number of blocks of sync signals mapped for a random access occasion is 8 or 16.
    [24]
    24. The method of any one of claims 15 to 23, wherein when a number of blocks of sync signals mapped to a random access occasion is N, and a number of contention-based or based on random access preambles. non-containment or all random access preambles on a random access occasion is N1, an N2 amount of random access preambles mapped to a block of synchronization signals is not greater than floor (N1 / N) or N1 / N, in that floor indicates rounding down to a nearest whole number; wherein a value of N1 is any one or more values within 4, 8, 12, 16, 20, 24,28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 128, and 256.
    [25]
    25. The method of any one of claims 15 to 24, wherein the method further comprises: determining a granularity of a number of preambles of random access based on the number of blocks of sync signals mapped for an occasion of random access , where the random access preamble is used to access the network device.
    [26]
    26. The method of any one of claims 15 to 25, wherein in a period of random access association Y, blocks of sync signals or groups of blocks of sync signals are cyclically mapped to occasions of random access.
    [27]
    27. The method of any one of claims 15 to 26,
    where in different periods of random access association, the first occasion of random access is mapped to the first block of synchronization signals.
    [28]
    28. The method of claim 15, wherein the RACH configuration information comprises a physical random access channel configuration index (PRACH) configuration index and a random access preamble subcarrier spacing.
    [29]
    29. The method of claim 28, wherein the PRACH configuration index indicates one or more of the following: a preamble format, a random access configuration period, a frame in which a random access resource is located, a subframe index, and an initial orthogonal frequency division (OFMD) multiplexing symbol.
    [30]
    30. Computer storage media, where the computer storage media stores a computer program, and when the computer program is run by a computer, the computer is enabled to perform the method as defined in any of the claims 15 to 29.
    [31]
    31. Communications apparatus, comprising: a sending unit, configured to send at least one block of synchronization signals, information used to indicate a mapping relationship between a block of synchronization signals and a random access occasion, and information of random access channel (RACH) configuration; and a receiving unit, configured to receive an access request from a terminal device in a random access association period Y, wherein the random access association period Y comprises X periods of random access configuration P, and a value of X is any one of 1, 2,4,8, and 16.
    [32]
    32. Apparatus according to claim 31, wherein the value of X is related to an amount of the synchronization signal blocks sent.
    [33]
    33. Apparatus according to claim 31 or 32, wherein the value of X is related to a number of random access occasions comprised in a random access configuration period P.
    [34]
    34. Apparatus according to any one of claims 31 to 33, wherein a value of the random access association period Y is 10 ms, ms, 40 ms, 80 ms, 160 ms, 320 ms, or 640 ms.
    [35]
    35. Apparatus according to any of claims 31 to 34, wherein the receiving unit is configured to, if there are one or more random access occasions remaining in the random access association period Y, not receiving the access request terminal device at the time of remaining random access.
    [36]
    36. Apparatus according to any one of claims 31 to 35, wherein the RACH configuration information comprises a PRACH physical random channel configuration index configuration index and a random access preamble subcarrier spacing.
    [37]
    37. Apparatus according to claim 36, in which the PRACH configuration index indicates one or more of the following: a preamble format, a random access configuration period, a frame in which a random access resource is located, a subframe index, and an initial orthogonal frequency division (OFDM) multiplexing symbol.
    [38]
    38. Apparatus according to any of claims 31 to 37, wherein a maximum number of blocks of sync signals mapped for a random access occasion is 8 or 16.
    [39]
    39. Apparatus according to any one of claims 31 to 38, wherein in a period of random access association Y, blocks of sync signals or groups of blocks of sync signals are cyclically mapped to occasions of random access.
    [40]
    40. Apparatus according to any one of claims 31 to 39, wherein in different periods of random access association Y, the first occasion of random access is mapped to the first block of synchronization signals.
    [41]
    41. Communications method, comprising: sending at least one block of sync signals, information used to indicate a mapping relationship between a block of sync signals and a random access occasion, and random access channel configuration information ( RACH); and receiving an access request from a terminal device in a random access association period Y, where the random access association period Y comprises X periods of random access configuration P, and a value of X is any one of 1 , 2,4,8, and 16.
    [42]
    42. The method of claim 41, wherein the value of X is related to an amount of the synchronization signal blocks sent.
    [43]
    43. The method of claim 41 or 42, wherein the value of X is related to a number of random access occasions comprised in a random access configuration period P.
    [44]
    44. The method of any one of claims 41 to 43, wherein a value of the random access association period Y is 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, 320 ms, or 640 ms.
    [45]
    45. Method according to any one of claims 41 to 44, wherein if there are one or more random access occasions remaining in the random access association Y period, the terminal device's access request is not received at the time of access remaining random.
    [46]
    46. The method of any one of claims 41 to 45, wherein the RACH configuration information comprises a PRACH physical random channel configuration index configuration index and a random access preamble subcarrier spacing.
    [47]
    47. Method according to claim 46, wherein the PRACH configuration index indicates one or more of the following: a preamble format, a random access configuration period, a frame in which a random access resource is located, a subframe index, and an initial orthogonal frequency division (OFDM) multiplexing symbol.
    [48]
    48. The method of any one of claims 41 to 47, wherein the maximum number of blocks of sync signals mapped for a random access occasion is 8 or 16.
    [49]
    49. The method of any one of claims 41 to 48, wherein in a random access association period Y, sync signal blocks or groups of sync signal blocks are cyclically mapped for random access occasions.
    [50]
    50. The method of any one of claims 41 to 49,
    wherein in different periods of random access association Y, the first occasion of random access is mapped to the first block of synchronization signals.
    [51]
    51. Computer storage media, where the computer storage media stores a computer program, and when the computer program is run by a computer, the computer is enabled to perform the method as defined in any of the claims 41 to 50.
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    WO2022006851A1|2020-07-10|2022-01-13|Oppo广东移动通信有限公司|Wireless communication method, terminal device, and network device|
    WO2022017511A1|2020-07-24|2022-01-27|Telefonaktiebolaget Lm Ericsson |Method and apparatus for random access procedure|
    CN113973396A|2020-07-24|2022-01-25|华为技术有限公司|Method for random access and communication device|
    法律状态:
    2021-11-03| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    优先权:
    申请号 | 申请日 | 专利标题
    CN201810032285.5A|CN110034887A|2018-01-12|2018-01-12|Communication means and device|
    CN201810032285.5|2018-01-12|
    PCT/CN2019/071634|WO2019137534A1|2018-01-12|2019-01-14|Communication method and apparatus|
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