POWER CONTROL IN NEW RADIO SYSTEMS

专利摘要:
Methods, systems and devices for power control in Novo Rádio (NR) systems are described. In one example, a user equipment (UE) can determine a transmission power for a control channel based on an effective code rate of control information to be transmitted on the control channel. In another example, the UE can be configured to use a different transmit power for repeated transmissions of control information on a control channel. In yet another example, the UE can be configured to determine a transmission power for a transmission in a time slot or to scale a transmission in a time slot based on a transmission priority relative to other transmissions scheduled in the time slot. In yet another example, the UE can be configured to determine the respective transmission powers for differently multiplexed uplink transmissions using different open loop parameters.
公开号:BR112019025529A2
申请号:R112019025529-0
申请日:2018-06-08
公开日:2020-06-23
发明作者:Akkarakaran Sony；Sony Akkarakaran；Huang Yi；Yi Huang；Gaal Peter；Peter Gaal；Feng Wang Xiao；Xiao Feng Wang；Luo Tao；Tao Luo；Xu Hao；Hao Xu
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

[0001] [0001] This Patent Application claims the benefit of U.S. Patent Application No. 16 / 002,928 by Akkarakaran et alii, entitled “Power Control in New Radio Systems”, filed on June 7, 2018; and U.S. Provisional Patent Application No. 62 / 517,815 by Akkarakaran et alii, entitled “Power Control in New Radio Systems”, filed on June 9, 2017; each of which is assigned to the assignee. BACKGROUND
[0002] [0002] The following refers in general to wireless communication and, more specifically, to power control in Novo Rádio (NR) systems.
[0003] [0003] Wireless communications systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messages, broadcast and so on. These systems may be able to support communication with multiple users by sharing available system resources (such as time, frequency and power). Examples of such multiple access systems include code division multiple access systems (CDMA), time division multiple access systems (TDMA), frequency division multiple access systems (FDMA) and division multiple access systems orthogonal frequency (OFDMA) (such as a Long Term Evolution (LTE) or a New Radio (NR) system).
[0004] [0004] A wireless multiple access communication system may include a number of base stations or access network nodes, each simultaneously supporting communication for multiple communication devices, which may otherwise be known as user equipment (UE ). In some cases, NR systems may support additional features (such as when compared to LTE systems) to improve the system's efficiency and flexibility. For example, NR systems can support ultra-reliable low-latency communication (URLLC) between a UE and a base station to reduce the latency of higher priority communications. However, conventional techniques for power control may not be suitable for wireless devices that communicate using the additional features supported by NR systems. SUMMARY
[0005] [0005] The techniques described refer to improved methods, systems, devices or devices that support power control in Novo Rádio (NR) systems. In one example, a user equipment (UE) can determine a transmission power for a control channel based on an effective code rate of control information to be transmitted on the control channel. In another example, the UE can be configured to use a different transmit power for repeated transmissions of control information on a control channel. In yet another example, the UE can be configured to determine a transmission power for a transmission over a period of time or to scale the power of a transmission over a period of time based on a transmission priority relative to other transmissions scheduled in the interval of time. In yet another example, the UE can be configured to determine the respective transmission powers for differently multiplexed uplink transmissions using different open loop parameters.
[0006] [0006] A wireless communication method is described. The method can determine a number of resource blocks allocated for control information to be transmitted on a transmission time interval (TTI) control channel, a payload size of the control information and a number of resource elements of resource blocks used to transmit control information, determine a transmission power to the control channel during TTI based, at least in part, on the number of resource blocks allocated for control information, on the payload size the control information and the number of resource elements of the resource blocks used to transmit the control information and transmit the control information during the TTI using the determined transmission power.
[0007] [0007] A device for wireless communication is described. The apparatus may include means for determining a number of resource blocks allocated for control information to be transmitted on a TTI control channel, a payload size of the control information and a number of resource elements of the resource blocks used to transmit control information, means to determine a transmission power to the control channel during TTI based, at least in part, on the number of resource blocks allocated for control information, the payload size of control information and the number of resource elements in the resource blocks used to transmit control information, and means for transmitting control information during TTI using the determined transmission power.
[0008] [0008] Another device for wireless communication is described. The device may include a processor, memory in electronic communication with the processor and instructions stored in memory. The instructions can be executable to make the processor determine a number of resource blocks allocated for control information to be transmitted in a TTI control channel, a payload size of the control information and a number of control elements. resource block resources used to transmit control information, determine a transmission power to the control channel during TTI based, at least in part, on the number of resource blocks allocated for control information, the load size control information and the number of resource elements in the resource blocks used for the transmission of control information and transmit control information during TTI using the determined transmission power.
[0009] [0009] A non-transitory computer readable medium for wireless communication is described. The non-transient computer-readable medium may include executable instructions to have a processor determine a number of resource blocks allocated for control information to be transmitted in the control channel of a TTI, a payload size of the control and a number of resource elements of the resource blocks used to transmit the control information, determine a transmission power to the control channel during TTI based, at least in part, on the number of resource blocks allocated for information control, the payload size of the control information and the number of resource elements in the resource blocks used to transmit the control information and transmit the control information during the TTI using the determined transmission power.
[0010] [0010] Some examples of the method, apparatus and medium readable by the non-transitory computer described above may additionally include processes, resources, means or instructions for determining an effective code rate for control information based, at least in part, the number of resource blocks allocated for control information, the payload size of the control information and the number of resource elements of the resource blocks used to transmit the control information, where the transmission power is determined based on, at least in part, at the effective code rate. In some examples of the method, apparatus and medium capable of being read by a non-transitory computer described above, determining the transmission power to the control channel during TTI may also be based, at least in part, on a message format of the transmission channel. control.
[0011] [0011] A wireless communication method is described. The method may include making a first transmission of control information on a control channel during a first TTI using a first transmission power, identifying the control information of the first transmission to be repeated during a second TTI, determining a second transmission power to repeat the transmission of control information during the second TTI, where the first transmission power is different from the second transmission power and to repeat the transmission of control information in the control channel during the second TTI using the second determined transmission power .
[0012] [0012] A device for wireless communication is described. The apparatus may include means for effecting a first transmission of control information on a control channel during a first TTI using a first transmission power, means for identifying control information for the first transmission to be repeated during a second TTI, means for determining a second transmit power to repeat the transmission of control information during the second TTI, where the first transmit power is different from the second transmit power and means for repeating the transmission of control information in the control channel during the second TTI using the second determined transmission power.
[0013] [0013] Another device for wireless communication is described. The device may include a processor, memory in electronic communication with the processor and instructions stored in memory. Instructions can be executable to make the processor perform a first transmission of control information on a control channel during a first TTI using a first transmission power, identify the control information of the first transmission to be repeated during a second TTI , determine a second transmit power to repeat the transmission of control information during the second TTI, where the first transmit power is different from the second transmit power, and repeat the transmission of control information on the control channel during the second TTI using the second determined transmission power.
[0014] [0014] A non-transitory computer readable medium for wireless communication is described. The non-transient computer-readable medium may include executable instructions to have a processor perform a first transmission of control information on a control channel during a first TTI using a first transmit power, identify control information from the first transmission to be repeated during a second TTI, determine a second transmit power to repeat the transmission of control information during the second TTI, where the first transmit power is different from the second transmit power and repeat the transmission of control information on the channel during the second TTI using the second determined transmission power.
[0015] [0015] In some examples of the method, apparatus and medium capable of being read by a non-transitory computer described above, the first transmission of control information may be in the first beam direction, where repetition of the transmission of control information includes repetition of the transmission of control information in a second beam direction which may be different from the first beam direction.
[0016] [0016] Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above may additionally include processes, resources, means or instructions to identify a first path loss associated with the first transmission of control information, where the first power transmission can be determined based, at least in part, on the first loss of travel. Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above may additionally include processes, resources, means or instructions for identifying a second path loss associated with the repeated transmission of control information, where the second transmission power may be determined based, at least in part, on the second loss of route.
[0017] [0017] Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above may additionally include processes, resources, means or instructions for receiving downlink control information (DCI) that include a transmit power control command (TPC) related to the second transmit power to repeat the transmission of the control information, where the second transmit power can be determined based, at least in part, on the TPC command.
[0018] [0018] In Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above, the DCI additionally indicates whether the TPC command can be applicable to the repeated transmission of control information. In some examples of the method, apparatus and medium capable of being read by a non-transitory computer described above, the DCI additionally indicates a repeated transmission to which the TPC command applies. In some examples of the method, apparatus and medium capable of being read by a non-transitory computer described above, DCI may be applicable to repeated transmissions of programmed control information after a fixed delay from a time interval in which DCI can be received .
[0019] [0019] In some examples of the method, apparatus and medium that can be read by a non-transitory computer described above, a first set of one or more step sizes in the TPC command relative to the second transmission power to repeat the transmission of the control information may be different from a second set of one or more step sizes in another TPC command relative to the first transmission power. Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above may additionally include processes, resources, means or instructions for identifying a table in the TPC command that indicates a relationship between step sizes and repetition indices for repeated transmissions of control information, where the second transmission power can be determined based, at least in part, on the table and on a repetition index of repeated transmission.
[0020] [0020] A wireless communication method is described. The method may include identifying data to be transmitted on a data channel during a TTI, determining a first transmission power to the data channel during the TTI based, at least in part, on a part frequency division multiplexing of the data channel with a control channel during the TTI and transmit the data in the data channel during the first TTI using the first determined transmission power.
[0021] [0021] A device for wireless communication is described. The apparatus may include means for identifying data to be transmitted on a data channel during a TTI, means for determining a first transmission power for the data channel during TTI based, at least in part, on a division multiplexing frequency of a part of the data channel with a control channel during the TTI, and means for transmitting the data on the data channel during the first TTI using the first determined transmission power.
[0022] [0022] Another device for wireless communication is described. The device may include a processor, memory in electronic communication with the processor and instructions stored in memory. The instructions can be executable to make the processor identify the data to be transmitted in a data channel during a TTI,
[0023] [0023] A non-transitory computer readable medium for wireless communication is described. The non-transient computer-readable medium may include executable instructions to have a processor identify data to be transmitted on a data channel during a TTI, determine a first transmission power to the data channel during TTI based, at least in part, in a frequency division multiplexing of a part of the data channel with a control channel during the TTI, and transmit the data in the data channel during the first TTI using the first determined transmission power.
[0024] [0024] Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above may additionally include processes, resources, means or instructions for determining the first transmission power for the TTI data channel independent of a second transmission power. transmission to the control channel during TTI. Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, resources, means or instructions for determining a second transmission power for the part of the data channel during TTI based, at least on part, in a third transmission power to the control channel during the TTI.
[0025] [0025] Some examples of the method, apparatus and medium capable of being read by a non-transitory computer described above may additionally include processes, resources, means or instructions for determining a fourth transmission power for a remaining part of the data channel during the first TTI that it cannot be multiplexed by frequency division with the control channel, where the fourth transmit power can be greater than the second transmit power for the part of the data channel multiplexed by frequency division with the control channel.
[0026] [0026] A wireless communication method is described. The method may include identifying data or control information to be transmitted on a first channel during a TTI, the first channel associated with a first transmission priority, determining that the first channel be multiplexed by frequency division with a second channel associated with a second transmission priority that is higher than the first transmission priority in a part of the TTI, determine a first transmission power for the second channel during the TTI independent of a second transmission power for the first channel during the TTI, and transmit the second channel during TTI using the first determined transmission power.
[0027] [0027] A device for wireless communication is described. The apparatus may include means for identifying data or control information to be transmitted on a first channel during a TTI, the first channel associated with a first transmission priority, means for determining that the first channel is multiplexed by frequency division with a second channel associated with a second transmission priority that is greater than the first transmission priority in a part of the TTI, means for determining a first transmission power for the second channel during TTI independent of a second transmission power for the first channel during the TTI, and means for transmitting the second channel during the TTI using the first determined transmission power.
[0028] [0028] Another device for wireless communication is described. The device may include a processor, memory in electronic communication with the processor and instructions stored in memory. Instructions can be executable to make the processor identify data or control information to be transmitted on a first channel during a TTI, the first channel associated with a first transmission priority, determine that the first channel is multiplexed by frequency division for a second channel associated with a second transmission priority higher than the first transmission priority in a part of the TTI, determine a first transmission power for the second channel during TTI independent of a second transmission power for the first channel during TTI , and transmit the second channel during the TTI using the first determined transmit power.
[0029] [0029] A non-transitory computer readable medium for wireless communication is described. The non-transient computer-readable medium may include executable instructions to have a processor identify data or control information to be transmitted on a first channel during a TTI, the first channel associated with a first transmission priority, determine that the first channel is multiplexed by frequency division with a second channel associated with a second transmission priority higher than the first transmission priority in a part of the TTI, determine a first transmission power for the second channel during TTI independent of a second power transmit to the first channel during TTI and transmit the second channel during TTI using the first determined transmit power.
[0030] [0030] Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above may additionally include processes, resources, means or instructions for determining the second transmission power for the first channel based, at least in part, on the first transmission power and at a maximum carrier power limit. Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, resources, means or instructions for determining the first transmission priority based, at least in part, on a type of the first channel and the second transmission priority based, at least in part, on a type of the second channel.
[0031] [0031] Some examples of the method, apparatus and medium readable by the non-transitory computer described above may additionally include processes, resources, means or instructions for determining the first transmission priority based, at least in part, on a payload of the first channel and second transmission priority based, at least in part, on a second channel payload. In Some examples of the method, apparatus and medium capable of being read by a non-transitory computer described above, the first channel or the second channel includes a channel used for low-latency ultra reliable communication (URLLC) of control or data, a channel used for communication enhanced mobile broadband (eMBB), a physical uplink control channel (PUCCH), a shared physical uplink channel (PUSCH) or a channel used for audible reference signal (SRS) transmissions.
[0032] [0032] A wireless communication method is described. The method may include identifying a first transmission power to be used for a first transmission associated with a first priority group, identifying a second transmission power to be used for a second transmission associated with a second priority group, where the second transmission is multiplexed by frequency division with the first transmission, determining that a total of the first transmission power and the second transmission power exceeds a threshold and transmitting the first transmission or the second transmission based, at least in part, on determination and comparison of a first priority from the first priority group to a second priority from the second priority group.
[0033] [0033] A device for wireless communication is described. The apparatus may include means for identifying a first transmission power to be used for a first transmission associated with a first priority group, means for identifying a second transmission power to be used for a second transmission associated with a second priority group, where the second transmission is multiplexed by frequency division with the first transmission, means for determining that a total of the first transmission power and the second transmission power exceeds a threshold and means for transmitting the first transmission or the second transmission based, at least less in part in determination, and a comparison of a first priority from the first priority group with a second priority from the second priority group.
[0034] [0034] Another device for wireless communication is described. The device may include a processor, memory in electronic communication with the processor and instructions stored in memory. The instructions can be executable to make the processor identify a first transmission power to be used for a first transmission associated with a first priority group, identify a second transmission power to be used for a second transmission associated with a second group of priorities, where the second transmission is multiplexed by frequency division with the first transmission, determine that a total of the first transmission power and the second transmission power exceeds a threshold and transmit the first transmission or the second transmission based, at least in part, in determining and comparing a first priority in the first priority group with a second priority in the second priority group.
[0035] [0035] A non-transitory computer readable medium for wireless communication is described. The non-transient computer-readable medium may include executable instructions to have a processor identify a first transmission power to be used for a first transmission associated with a first priority group, identify a second transmission power to be used for a second transmission associated with a second priority group, where the second transmission is multiplexed by frequency division with the first transmission, determine that a total of the first transmission power and the second transmission power exceeds a limit and transmits the first transmission or the second transmission based, at least in part, on determining and comparing a first priority in the first priority group with a second priority in the second priority group.
[0036] [0036] Some examples of the method, apparatus and medium readable by a non-transitory computer described above may additionally include processes, resources, means or instructions to determine that the first priority group may be associated with a higher priority than the second group priorities. Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, resources, means or instructions for transmitting the first transmission and refrain from transmitting the second transmission based, at least in part, on the determination.
[0037] [0037] In Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above, the second transmission includes an audible reference signal (SRS) transmission. In Some examples of the method, apparatus and medium readable by a non-transitory computer described above, each of the first transmission group and the second transmission group can be associated with one or more types of transmission that have equal priority.
[0038] [0038] In Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above, the second transmission can be multiplexed by frequency division with the first transmission in at least one period of symbols and determine whether the total of the first transmission power and the second transmission power exceeds a limit includes determining that the total of the first transmission power and the second transmission power in at least one symbol period exceeds the limit.
[0039] [0039] A wireless communication method is described. The method may include identifying data or control information to transmit in a first TTI using a first waveform, determining a first transmission power for data or control information based, at least in part, on a first set of a or more open loop parameters associated with the first waveform, wherein the first set of one or more open loop parameters is different from a second set of one or more open loop parameters associated with a second waveform, and transmit the data or control information in the first TTI using the determined transmission power.
[0040] [0040] A device for wireless communication is described. The apparatus may include means for identifying data or control information to transmit in a first TTI using a first waveform, means for determining a first transmission power for data or control information based, at least in part, on a first set of one or more open loop parameters associated with the first waveform, wherein the first set of one or more open loop parameters is different from a second set of one or more open loop parameters associated with a second shape wave, and means for transmitting data or control information in the first TTI using the determined transmission power.
[0041] [0041] Another device for wireless communication is described. The device may include a processor, memory in electronic communication with the processor and instructions stored in memory. The instructions can be executable to make the processor identify data or control information to transmit in a first TTI using a first waveform, determine a first transmission power for the data or control information based, at least in part , in a first set of one or more open loop parameters associated with the first waveform, where the first set of one or more open loop parameters is different from a second set of one or more open loop parameters associated with a second waveform, and transmit the control data or information in the first TTI using the determined transmission power.
[0042] [0042] A non-transitory computer readable medium for wireless communication is described. The non-transient computer-readable medium may include executable instructions to have a processor identify data or control information to be transmitted in a first TTI using a first waveform, determine a first transmission power for the data information or control based, at least in part, on a first set of one or more open loop parameters associated with the first waveform, where the first set of one or more open loop parameters is different from a second set of one or more open loop parameters associated with a second waveform, and transmit the control data or information in the first TTI using the determined transmission power.
[0043] [0043] Some examples of the method, apparatus and medium that can be read by a non-transitory computer described above may additionally include processes, resources, means or instructions for receiving the DCI that programs a transmission of data or control information using the second waveform in a second TTI. Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, resources, means or instructions for determining a second transmission power for the transmission of data or control information in the second TTI based, at least least in part, in a TPC command included in the DCI.
[0044] [0044] In some examples of the method, apparatus and medium that can be read by a non-transitory computer described above, the TPC command includes a first set of one or more closed loop parameters associated with the transition between the first waveform in the first TTI and in the second waveform in the second TTI, and the first set of one or more closed loop parameters may be different from a second set of one or more closed loop parameters associated with successive transmissions associated with the same waveform.
[0045] [0045] In some examples of the method, apparatus and medium capable of being read by a non-transitory computer described above, each of the first and second sets of one or more open loop parameters includes at least one of a maximum carrier power limit, a constant fractional loss of path, a signal-interference-more-noise ratio (SINR) P0 target, compensation based on a modulation and coding scheme (MCS) for different waveforms and a step size in closed loop. In Some examples of the method, apparatus and medium readable by a non-transitory computer described above, each of the first waveform and the second waveform includes an orthogonal frequency division multiplexing (OFDM) waveform or an OFDM spread over a discrete fourrier transform (DFT) waveform. BRIEF DESCRIPTION OF THE DRAWINGS
[0046] [0046] Figure 1 shows an example of a wireless communications system that supports power control according to several aspects of the present disclosure;
[0047] [0047] Figures 2-6 show examples of uplink control and data signaling in a system that controls power according to different aspects of the present disclosure;
[0048] [0048] Figures 7-9 show examples of process flows for power control in Novo Rádio (NR) systems according to several aspects of the present disclosure;
[0049] [0049] Figures 10-12 show block diagrams of a device that supports power control in NR systems according to several aspects of the present disclosure;
[0050] [0050] Figure 13 shows a block diagram of a system that includes a UE that supports power control in NR systems according to several aspects of the present disclosure;
[0051] [0051] Figures 14-19 show methods for power control in NR systems according to several aspects of the present disclosure. DETAILED DESCRIPTION
[0052] [0052] A wireless communication system can support wireless communication between a base station and user equipment (UE). Some wireless communication systems (such as Novo Radio (NR) systems, however, may support different or additional features when compared to other wireless communication systems (such as Long Term Evolution systems) (LTE)). For example, a UE in a New Radio (NR) system can support different techniques for multiplexing uplink signals transmitted to a base station (such as using orthogonal frequency division multiplexing (OFDM) or OFDM spread by transform of discrete fourrier (DFT) (DFT-SOFDM)). In another example, an NR system can support ultra-reliable low-latency communication (URLLC) between a UE and a base station. In yet another example, an NR system can support a wide range of payloads for transmitting uplink control information to a base station (as, for example, due to group-based auto-repeat request feedback (HARQ) code blocks (CBG)).
[0053] [0053] Given these additional features introduced in NR systems, conventional techniques for determining a transmission power for uplink communication can be inefficient. As described herein, a wireless communications system can support efficient techniques for configuring an UE to determine an appropriate transmit power for an uplink transmission. In one example, a UE can determine a transmission power for a control channel based on an effective code rate of control information to be transmitted on the control channel. In another example, the UE can be configured to use a different transmit power for repeated transmissions of control information on a control channel. In yet another example, the UE can be configured to determine a transmission power for a transmission in a time slot or to scale a transmission in a time slot based on a transmission priority relative to other transmissions scheduled in the time slot. In yet another example, the UE can be configured to determine the respective transmission powers for differently multiplexed uplink transmissions using different open loop parameters.
[0054] [0054] Aspects of the disclosure introduced above are described below in the context of a wireless communications system. Examples of signaling processes and exchanges that support power control in NR systems are described. Aspects of the development are additionally shown and described with reference to device diagrams, system diagrams and flowcharts that relate to power control in NR systems.
[0055] [0055] Figure 1 shows an example of a wireless communications system 100 that supports power control according to various aspects of the present disclosure. The wireless communications system 100 includes base stations 105, UEs 115 and a basic network 130. In some instances, the wireless communications system 100 may be an LTE, LTE-Advanced (LTE-A) network or an NR network. In some cases, the wireless communication system 100 can support enhanced mobile broadband communications (eMBB), ultra-reliable communications (ie, mission critical), low-latency communications (such as ultra-reliable communications low latency (URLLC)) and low-cost, low-complexity device communications.
[0056] [0056] Base stations 105 can communicate wirelessly with UEs 115 through one or more base station antennas. Each base station 105 can provide communication coverage for a respective geographic coverage area 110. The communication links 125 shown on the wireless communication system 100 can include uplink transmissions from an UE 115 to a base station 105 or transmissions from downlink from a base station 105 to a UE 115. Control information and data can be multiplexed on an uplink or downlink channel according to various techniques. Control information and data can be multiplexed on a downlink channel, for example, using time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques or hybrid TDM-FDM techniques. In some examples, control information transmitted during a transmission time interval (TTI) from a downlink channel can be distributed between different control regions in a cascade manner (such as, among a control region and one or more EU-specific control regions).
[0057] [0057] UEs 115 can be dispersed throughout the wireless communication system 100, and each UE 115 can be stationary or mobile. A UE 115 can also be referred to as a mobile station, a subscriber station,
[0058] [0058] Base stations 105 can communicate with basic network 130 and with each other. For example, base stations 105 can interact with basic network 130 via return transport links 132 (such as, for example, S1, S2). Base stations 105 can communicate with each other via return transport links 134 (such as, for example, X1, X2) directly or indirectly (such as, for example, through basic network 130). Base stations 105 can perform radio configuration and programming for communication with UEs 115 or can operate under the control of a base station controller (not shown). In some examples, base stations 105 may be macro cells, small cells, hot spots or the like. Base stations 105 can also be referred to as evolved NodesB (eNBs) 105.
[0059] [0059] A base station 105 can be connected by an S1 interface to the basic network 130. The basic network 130 can be an evolved packet core (EPC), which can include at least one mobility management entity (MME), at least least one server gateway (S-GW) and at least one Packet Data Network (PDN) gateway (P-GW). The MME can be the control node that processes the signaling between the UE 115 and the EPC. All user Internet Protocol (IP) packages can be transferred via the S-GW, which can be connected to the P-GW itself. P-GW can provide IP address allocation, as well as other functions. The P-GW can be connected to the IP services of network carriers. Carrier IP services may include the Internet, the Intranet, an IP Multimedia Subsystem (IMS) and a Packet-Switched Continuous-Transmission (PS) Service.
[0060] [0060] The time intervals in LTE or NR can be expressed in multiples of a basic time unit (which can be a sampling period of Ts = 1 / 30,720,000 seconds). Time resources can be organized according to 10 msec radio frames (Tf = 307200Ts), which can be identified by a number of system frames (SFN) ranging from 0 to 1023. Each frame can include ten 1 msec subframes numbered from 0 to 9. A subframe can be further divided into two 0.5 msec partitions, each of which contains 6 or 7 modulation symbol periods (which depend on the length of the prefixed cyclic prefix on each symbol). Excluding the cyclic prefix, each symbol contains 2048 sample periods.
[0061] [0061] In wireless communication system 100, a TTI can be defined as the smallest unit of time in which a base station 105 can program a UE 115 for uplink or downlink transmissions. As an example, a base station 105 can allocate one or more TTIs for downlink communication with a UE 115. The UE 115 can then monitor the one or more TTIs to receive downlink signals from base station 105. In some systems wireless communication (such as LTE), a subframe can be the basic programming unit or TTI. In other cases, as in low-latency operations, a different TTI of reduced duration (such as, for example, a short TTI) may be used (such as, for example, a mini-partition). The wireless communication system 100 can use a variety of TTI durations, including those that facilitate URLLC and eMBB communications, in addition to other types of communications associated with LTE and NR.
[0062] [0062] A resource element can consist of a period of symbols and a subcarrier (such as, for example, a frequency range of 15 KHz). In some cases, the numerology used in a system (that is, symbol size, subcarrier size, symbol period length or TTI duration) can be selected or determined based on a type of communication. Numerology can be selected or determined in view of an inherent trade-off between latency for low-latency applications and efficiency for other applications, for example.
[0063] [0063] In the wireless communications system 100, a UE 115 can be configured by a base station 105 to transmit SRSs to base station 105. SRS transmissions may allow base station 105 to estimate the channel quality of a radio channel. so that base station 105 may be able to allocate high quality resources for uplink communication with UE 115. In some instances, SRS transmission may span an entire system bandwidth to allow a base station to estimate quality resources through system bandwidth. In other examples, however, the SRS transmission can be multiplexed by frequency division (as, for example, in the wireless communications system 100) with transmissions of information and control data. In addition to SRS transmissions, other transmissions, such as low-latency transmissions, can be multiplexed by frequency division with transmissions of control, data and SRS information on NR systems.
[0064] [0064] Thus, as introduced above, wireless communication system 100 can support different or additional features when compared to other wireless communication systems. Given these additional features supported in the wireless communications system 100, conventional techniques for determining a transmit power for uplink communication can be inefficient. As described herein, wireless communications system 100 can support efficient techniques for configuring an UE 115 to determine an appropriate transmit power for an uplink transmission. In one example, an UE 115 can determine a transmission power for a control channel based on an effective code rate of control information to be transmitted on the control channel. In another example, the UE 115 can be configured to use a different transmit power for repeated transmissions of control information on a control channel. In yet another example, the UE 115 can be configured to determine a transmission power for a transmission over a time interval or to scale a transmission over a time based on a transmission priority relative to other transmissions scheduled in the time interval. In yet another example, the UE 115 can be configured to determine the respective transmit powers for multiplexed uplink transmissions differently using different open loop parameters.
[0065] [0065] Figure 2 shows an example of uplink control and data signaling 200 in a system that supports power control according to several aspects of the present disclosure. A base station 105 can allocate a set of resource blocks 205 for uplink communication with a UE 115. Specifically, the UE 115 can be programmed to transmit uplink control information (such as PUCCH 220) and uplink data (such as PUSCH 225) during partitions
[0066] [0066] In some cases, base station 105 can configure UE 115 to transmit uplink control information on PUCCH 220 using a specific format (such as, for example, PUCCH 1 format). In addition, on some wireless communication systems (such as LTE systems), the base station 105 can configure a UE 115 to use a specific transmit power in a resource block for a PUCCH transmission based on the format PUCCH transmission. Specifically, base station 105 can transmit power compensation (such as a transmit power command (TPC)) to UE 115 based on the PUCCH transmission format, and UE 115 can use compensation to adjust a transmission power for PUCCH transmission. In an example, for PUCCH 4 and 5 formats, the compensation can be equal to 10 * log10 M, where M corresponds to a number of resource blocks allocated for PUCCH transmission.
[0067] [0067] In other wireless communication systems (such as NR systems), however, the number of resource blocks (or resource elements) used for PUCCH transmission may vary. For example, the number of resource blocks (or resource elements) used for PUCCH transmission can vary based on a number of resource blocks (or resource elements) in PUCCH 220 drilled by other transmissions. In addition, the number of resource blocks (or resource elements) used for PUCCH transmission can vary based on a payload size of the control information to be transmitted in PUCCH 220. Thus, it can be inefficient for a station base 105 configure the UE 115 with a specific transmission power for a PUCCH transmission based on only one format of the PUCCH transmission. As described herein, an UE 115 in wireless communication systems (such as, for example, wireless communication system 100) can support efficient techniques for determining a transmit power to be used to transmit control information on PUCCH 220.
[0068] [0068] Specifically, a UE 115 can determine a transmission power for a PUCCH transmission based on a bandwidth or number of resource blocks allocated to the PUCCH 220, a payload size of the control information a be transmitted in PUCCH 220, a coding scheme used to encode the control information to be transmitted in PUCCH 220 (such as Reed-Muller code or polar code), a number of resource blocks (or resource elements ) used in PUCCH 220 (such as for low latency communications) or a combination of them. In some examples, the UE 115 may derive an effective code rate from the control information to be transmitted in PUCCH 220 based, for example, on the bandwidth or the number of resource blocks allocated to the PUCCH 220, the size of payload of the control information to be transmitted in PUCCH 220 and in the number of resource blocks (or resource elements) used in PUCCH 220.
[0069] [0069] As such, once the UE 115 identifies the effective code rate for transmitting PUCCH, the UE 115 can identify a transmission power for transmitting PUCCH based on the effective code rate. In other examples, the UE may identify a first compensation to be used to adjust the transmission power for the PUCCH transmission based on a format of the PUCCH transmission and on an available bandwidth for the transmission of PUCCH (such as example, number of resource blocks) and UE 115 can identify a second offset to be used to further adjust the transmission power for PUCCH transmission based on the effective code rate, as described above.
[0070] [0070] Figure 3 shows an example of uplink control and data signaling 300 in a system that supports power control according to several aspects of the present disclosure. A base station 105 can allocate a set of resource blocks 305 for uplink communication with a UE 115. Specifically, the UE 115 can be programmed to transmit uplink control information (such as repeated PUCCH 320 and another PUCCH 325 ) and uplink data (such as PUSCH 330) during partitions 315 of subframes 310. As shown, the resources allocated for PUCCH transmissions may cover a different part of a system bandwidth than that of the resources allocated for PUSCH transmissions. That is, the resources allocated for PUSCH transmissions can be multiplexed by frequency division with the resources allocated for PUCCH transmissions.
[0071] [0071] In some cases, base station 105 can configure UE 115 to transmit uplink control information on a PUCCH 320 during a first partition 315-a of a subframe 310-a. The base station can also configure the UE 115 with a transmit power to be used to transmit control information on partition 315-a. In some cases, the base station can configure the UE 115 to transmit control information on partitions 315-a and 315-b at the same transmit power. In some cases, the base station may configure the UE 115 to transmit control information on partitions 315-a and 315-b with a different transmission power. On some wireless communication systems (such as NR systems), after transmitting the control information during the first partition 315-a, the UE 115 can determine to repeat the transmission of the control information on a 315-c partition subsequent. The techniques described herein allow a UE 115 to determine a transmission power for the repeated transmission of control information on a subsequent partition (such as, for example, for a repeated PUCCH 320).
[0072] [0072] In one example, the UE 115 can use the same transmit power to repeat the transmission of control information on partition 315-c. Specifically, UE 115 can determine the transmit power to be used for the repeated transmission of control information on partition 315-c based on the same parameters used to determine the transmit power used to transmit control information on partition 315- The. In another example, UE 115 may use a second transmit power to repeat the transmission of control information on partition 315-c which is different from a first transmit power used to transmit control information on partition 315-a. In some cases, the base station can configure the UE 115 to transmit control information on partitions 315-c and 315-d at the same transmit power. In some cases, the base station may configure the UE 115 to transmit control information on partitions 315-c and 315-d with different transmission power. In some examples, control information can be transmitted on partition 315-a in a first beam direction, and control information can be repeated on a transmission on partition 315-c in a second beam direction.
[0073] [0073] In such examples and others, the UE 115 can determine the first transmission power based on a first path loss (as, for example, associated with the first beam direction) and the UE 115 can determine the second transmission power. transmission based on a second path loss (as, for example, associated with the second beam direction). In addition, if any of the open loop power control parameters, such as the SINR target, the fractional path loss alpha factor or the compensation based on the control format (such as, for example, PUCCH format), is reconfigured in the time interval between the first transmission and the repeated transmission, the updated parameters can be used for the repeated transmission. In addition, the calculation of the effective code rate, as described with reference to Figure 2, can explain differences in the amounts of drilling experienced by the different repeated transmissions.
[0074] [0074] Additionally or alternatively, the UE 115 can receive an indication of the second transmit power in a TPC command included in the DCI received from a base station 105. In some examples, the DCI used to configure the transmit power for a Repeated transmission of control information may have a dedicated format (such as one of DCI 3, 3A, 6-0A or 6-1A formats). In addition, the transmission power setting (such as transmission power compensation) may include an indication that the information in the DCI is applicable to repeated transmissions of control information (or a specific repeated transmission of control information) ), and DCI may apply to such programmed repeated transmissions after a fixed delay of a time interval in which the DCI was received. For example, a TPC command included in a DCI received on a specific partition can be applied to PUCCH transmissions on subsequent partitions that may or may not include DCI-triggered PUCCH transmissions. The techniques described with reference to Figure 3 can also be used for repeated transmissions of uplink data (such as, for example, PUSCH repetitions).
[0075] [0075] Figure 4 shows an example of uplink control and data signaling 400 in a system that supports power control according to several aspects of the present disclosure. A base station 105 can allocate a set of resource blocks 405 for uplink communication with a UE 115. Specifically, the UE 115 can be programmed to transmit uplink control information (such as PUCCH 425), uplink data (such as PUSCH 430) and SRS during partitions 415 of subframes 410. As shown, the resources allocated for PUCCH transmissions may cover a different part of a system bandwidth than that of the resources allocated for PUSCH transmissions . That is, the resources allocated for PUSCH transmissions can be multiplexed by frequency division with the resources allocated for PUCCH transmissions.
[0076] [0076] In some cases, base station 105 can configure UE 115 to transmit uplink control information in PUCCH 425 and uplink data in PUSCH
[0077] [0077] In other wireless communication systems (such as NR systems), however, a base station can program a PUCCH transmission and a PUSCH transmission, where a fraction of the PUSCH transmission overlaps with the PUCCH transmission . That is, a fraction of the PUSCH transmission can be multiplexed by frequency division with a PUCCH transmission (as, for example, within partition 415-a). In such cases, it may be challenging for an UE 115 to determine appropriate transmission powers for PUSCH transmission and PUCCH transmission. As described herein, an UE 115 can support efficient techniques for determining transmission powers for a PUSCH transmission and a PUCCH transmission when a fraction (or part) of the PUSCH transmission is multiplexed by frequency division with a PUCCH transmission.
[0078] [0078] Specifically, UE 115 can support efficient techniques for determining transmission powers for PUSCH and PUCCH transmissions during a first part 420-a of partition 415-a and a second part 420-b of partition 415-a. In one example, the UE 115 can determine the transmit power for PUSCH transmission in partition 415-a based on a maximum carrier power limit and independent of a transmit power to be used for PUCCH transmission. In another example, the UE 115 can determine the transmit power for PUSCH transmission in the first part 420-a of partition 415-a based on the maximum carrier power limit and the transmit power to be used for the transmission of PUCCH, and the UE 115 can determine the transmit power for PUSCH transmission in the second part 420-b of partition 415-a based on the maximum carrier power limit and independent of the transmit power to be used for the transmission of PUCCH.
[0079] [0079] That is, the UE 115 can reserve power for the transmission of PUCCH in the first part 420- a of partition 415-a and increase the power for the transmission of PUSCH in the second part 420-b of partition 415-a (like, for example, to compensate for the power reserved for PUCCH transmission in the first part 420-a of partition 415-a). In some ways, the power used for PUSCH transmission in the second part 420-b of partition 415-a can be increased so that the total power used for PUSCH transmission in partition 415-a remains at a nominal value similar to a transmission power that would be used if the PUSCH transmission was not multiplexed by frequency division with the PUCCH transmission.
[0080] [0080] In another aspect, the UE 115 can determine the PUSCH transmission power based on the part of the PUSCH that overlaps in time with PUCCH, and then use that same PUSCH transmission power for the entire PUSCH duration or for the duration of that specific PUSCH repeat in the case when the PUSCH repeat is used. In addition, although Figure 4 shows an example of a PUCCH 425 on a first part 420-a at the end of partition 415-a, it should be understood that PUCCH 425 can cover other parts of partition 415-a (such as , PUCCH may be at the beginning of partition 415-a).
[0081] [0081] Figure 5 shows an example of uplink control and 500 data signaling in a system that supports power control according to several aspects of the present disclosure. A base station 105 can allocate a set of resource blocks 505 for uplink communication with a UE 115. Specifically, the UE 115 can be programmed to transmit uplink control information (such as PUCCH 520), uplink data (such as PUSCH 525) and SRS 535 during partitions 515 of subframes 510. As shown, the resources allocated for PUCCH transmissions may cover a different part of a system bandwidth than that of the resources allocated for PUCCH transmissions. PUSCH. That is, the resources allocated for PUSCH transmissions can be multiplexed by frequency division with the resources allocated for PUCCH transmissions.
[0082] [0082] In some cases, base station 105 can configure UE 115 to transmit uplink control information in PUCCH 520 and uplink data in PUSCH
[0083] [0083] In other wireless communication systems (such as NR systems), other transmissions can be multiplexed by frequency division with PUSCH transmissions and PUCCH transmissions. For example, SRS 535 transmissions and perforated low-latency transmissions (such as 530 highest priority transmission) can be multiplexed by frequency division with PUSCH transmissions and PUCCH transmissions. In addition, each of these different types of transmission can be associated with different priorities. The techniques described herein allow a UE 115 to determine transmission strengths suitable for uplink transmissions that can be multiplexed by frequency division with other uplink transmissions based, for example, on the priorities associated with the different transmissions.
[0084] [0084] In some cases, a set of resource blocks allocated for a PUSCH transmission may be drilled for a higher priority 530 transmission (such as, for example, a low-latency ultra-reliable transmission). A transmission can be considered a higher priority transmission 530 if it takes precedence by preemption (such as using drilling) or over other transmissions scheduled for the same or overlapping resources. The highest priority 530 transmissions can pierce low priority PUSCH transmissions and low priority PUCCH transmissions. In such cases, the UE 115 can prioritize the highest priority transmission 530 and determine the transmission power for the highest priority transmission 530 based on the maximum carrier power limit and independent of other transmission powers used for the division frequency of multiplexed uplink transmissions with the highest priority transmission 530. For example, the highest priority transmission 530 can be a low latency data transmission or uplink control on partition 515-b, and the UE 115 can determine the uplink transmission power for low-latency or control transmission data based on the maximum carrier power limit and independent of other transmission powers (such as transmission powers for PUCCH 520, PUSCH transmissions 525 and SRS 535 on partition 515-b).
[0085] [0085] When the UE 115 determines the transmit power for the highest priority transmission 530, the UE 115 can then determine the transmit power for the PUCCH transmissions in partition 515-b based on the maximum carrier power limit and transmission power for the highest priority transmission 530 (such as, for example, PCMaxc - PURLLC) (as, for example, since PUCCH transmissions may be associated with a second highest priority on partition 515-b). The UE 115 can then determine the transmit power for SRS transmissions based on the maximum carrier power limit and the transmit powers for the highest priority transmission 530, and PUCCH 520 transmissions (such as, for example, PCMaxc - PPUCCH - PURLLC), and the transmission power for PUSCH transmission based on the maximum carrier power limit and transmission powers for the highest priority transmission 530, PUCCH 520 transmissions and SRS transmissions 535 (such as, for example, PCMaxc - PSRS - PPUCCH - PURLLC).
[0086] [0086] Thus, using the techniques described here, a UE 115 can determine the transmission power for multiple transmissions that are multiplexed by frequency division over a period of time (such as, for example, partition 515-b or a symbol of a partitions 515) based on the priorities associated with the multiple streams. Although the examples described above may not include an exhaustive list of the different types of transmissions that can be multiplexed by frequency division within a time interval, it should be understood that the UE 115 can apply the same techniques to determine the transmission power for such different types of transmission based on the priorities associated with the different types of transmission.
[0087] [0087] As an example, a transmission of low-latency uplink control information may be associated with a higher priority than a transmission of low-latency uplink data. Thus, using the techniques described here, the transmission power for transmitting low-latency control information can be determined based on the transmission powers of higher priority transmissions and independent of the transmission powers of higher priority transmissions. low, such as low latency data transmission. Similarly, certain types of traffic may be associated with a higher priority than other types of traffic, and the transmission power used to transmit one type of traffic can be determined based on the priority of that type of traffic (such as example, URLLC traffic, eMBB and the like). In addition, certain payloads can be associated with a higher priority than other payloads, and the transmission power used to transmit certain payloads can be determined based on the payload priority. For example, a PUCCH eMBB that includes an ACK may be associated with a higher priority than a low-latency data packet.
[0088] [0088] Figure 6 shows an example of uplink control and data signaling 600 in a system that supports power control according to several aspects of the present disclosure. A base station 105 can allocate a set of resource blocks 605 for uplink communication with a UE 115. Specifically, the UE 115 can be programmed to transmit uplink control information (such as PUCCH 620), uplink data (such as PUSCH 625) and SRS 635 during partitions 615 of subframes 610. As shown, the resources allocated for PUCCH transmissions can cover a different part of a system bandwidth than that of the resources allocated for PUCCH transmissions. PUSCH. That is, the resources allocated for PUSCH transmissions can be multiplexed by frequency division with the resources allocated for PUCCH transmissions.
[0089] [0089] In some cases, base station 105 can configure UE 115 to transmit uplink control information on PUCCH 620 and uplink data on PUSCH
[0090] [0090] In other wireless communication systems (such as NR systems), however, other transmissions can be multiplexed by frequency division with PUSCH transmissions and PUCCH transmissions. For example, SRS transmissions and perforated low-latency transmissions can be multiplexed by frequency division with PUSCH transmissions and PUCCH transmissions. In addition, each of these different types of transmission can be associated with different priorities. The techniques described here allow a UE 115 to properly scale multiplexed uplink transmissions that can split the frequency within a time interval, such that the total transmission power in the time interval is equal to or less than a maximum limit carrier power.
[0091] [0091] In one example, a UE 115 may refrain from transmitting signals of a certain type based on predefined rules, such that the total transmission power in a time interval remains below the maximum. For example, UE 115 may determine that the total power on partition 615-a exceeds the maximum carrier power limit, and in some instances, UE 115 may be configured to refrain from transmitting SRSs on partition 615-a. Therefore, the transmission sized 640 on partition 615-a can reduce the total transmission power on partition 615-a, so that the UE 115 can transmit the other uplink signals with a total transmission power less than or equal to a maximum carrier power limit.
[0092] [0092] In another example, the UE 115 can classify uplink transmissions on a 615 partition into priority groups (such as three or more groups), where each group includes one or more transmissions with equal priority. In the example in Figure 6, UE 115 can classify PUCCH 620 transmissions in a first priority group, PUSCH 625 transmissions in a second priority group, SRS 635 transmissions in a third priority group and transmission of highest priority 630 in a fourth priority group. As shown, the second priority group, which includes PUSCH transmissions, can be associated with a lower priority of the priority groups. Therefore, if the UE 115 determines that the total power on partition 615-b exceeds the maximum carrier power limit, the UE 115 can be configured to scale PUSCH 625 transmissions (that is, transmissions sized 640 on partition 615- B).
[0093] [0093] After dimensioning the PUSCH transmissions, the UE 115 can determine that the total transmission power in partition 615-b is even greater than the maximum carrier power limit. Therefore, UE 115 can determine that PUCCH transmissions on partition 615-b are associated with the second lowest priority of the priority groups, and UE 115 can size a PUCCH 620 transmission on partition 615-b. In some examples (as shown), the UE can be configured to size a portion of the transmissions from the PUCCH 620 on partition 615-b. However, in other examples (not shown), the UE 115 can be configured to size all PUCCH 620 transmissions on partition 615-b. That is, the UE 115 can scale all transmissions in the priority group associated with the second lowest priority if the transmission power within the time interval remains above the maximum carrier power limit after dimensioning all transmissions in the priority group. associated with the lowest priority.
[0094] [0094] In yet another example, the UE 115 can classify uplink transmissions on a 615 partition into priority groups, where each group includes one or more transmissions with equal priority. And the UE 115 can analyze each group to determine whether to scale transmissions within the group. For example, the UE 115 can start with a higher priority group and the UE can determine whether the transmit power to be used to transmit the signals in the highest priority group falls below the maximum carrier power limit (ie , if there is enough power to transmit the signals in the highest priority group). If the UE determines that there is sufficient transmission power to transmit the signals in the highest priority group, the UE may reserve power to transmit the signals in the highest priority group.
[0095] [0095] The UE 115 can then determine if there is enough transmit power to transmit signals in a second higher priority group (such as, after reserving power to transmit signals in the higher priority group). The UE 115 can continue this process of determining whether there is enough power to transmit signals in each priority group until there is not enough power available to transmit signals in a specific priority group. In such cases, the UE 115 may refrain from transmitting signals in the specific priority group and in the priority groups that have low priorities. Alternatively, the UE 115 can transmit signals associated with the specific priority group with power levels scaled in such a way that there is sufficient power to transmit the signals within the specific priority group, and the UE 115 can refrain from transmitting signals in priority groups with low priorities. Using these techniques, the UE 115 can be guaranteed to have enough power to transmit the signals in the highest priority group based on the power formulas applied before power scaling.
[0096] [0096] Although the techniques described above refer to the performance of power scaling on a 615 partition, it must be understood that the UE 115 may be able to scale uplink transmission that is multiplexed by frequency division in a symbol, in such a way so that the total transmission power within a symbol is less than or equal to a maximum carrier power limit. In addition, while the techniques described above are related to design transmissions that overlap within an entire TTI, the techniques described above also apply to design transmissions that overlap within a part of a TTI. In such cases, if an UE 115 determines to scale an uplink transmission that partially overlaps with another uplink transmission in a TTI, the UE 115 can scale the entire uplink transmission instead of the part of the uplink transmission that overlaps with the another uplink transmission in the TTI. In addition, the UE 115 can determine which transmissions to scale based on determining whether one or more transmissions are repeated.
[0097] [0097] In addition, or as an alternative to the techniques described above, a UE 115 described herein can be configured to determine an appropriate transmit power for uplink transmissions associated with a variety of waveforms (such as waveforms) wave DFT-S-OFDM and OFDM waveforms). Specifically, the techniques described herein allow the UE 115 to determine a transmission power for an uplink transmission of information or control data based on different parameters, depending on a waveform used for the transmission. In one example, a base station 105 can use independent closed loop parameters (or TPC commands) to configure a UE 115 with an appropriate transmit power for an uplink transmission, depending on whether the uplink transmission is to be multiplexed using a form DFT-S-OFDM waveform or an OFDM waveform.
[0098] [0098] In another example, base station 105 can use common closed loop parameters (or TPC commands) to configure a UE 115 with a transmission power appropriate for an uplink transmission, and base station 105 can use different parameters of open loop to configure the UE 115 with transmission powers appropriate for multiplexed uplink transmissions using different waveforms. For example, the base station can identify different values (target SINR) of P0, different fractional path loss constants and different compensation based on MCS or based on code rate to configure the UE 115 with a transmission power appropriate for transmission uplink, depending on whether the uplink transmission uses DFT-S-OFDM or OFDM.
[0099] [0099] In one example, base station 105 can provide a first transmit power compensation parameter for uplink transmissions using DFT-S-OFDM, and base station 105 can provide a second transmit power compensation parameter ( such as a relative transmission power compensation parameter to be used in combination with the first transmission power compensation parameter) for uplink transmissions using OFDM or vice versa. In some respects, the relative transmission power compensation parameter may depend on a modulation order or an encoding rate for the uplink transmission. For example, base station 105 may not provide relative transmit power compensation for uplink transmissions associated with lower modulation orders (such as quadrature phase shift (QPSK) switching) or encoding rates, and base station 105 can provide relative transmit power compensation for uplink transmissions associated with higher modulation orders (such as 16 quadrature amplitude modulation (QAM) or 64-QAM) or higher encoding rates tall.
[0100] [0100] In addition to the techniques described above, a base station 105 can also configure a UE 115 with an appropriate transmit power for an uplink transmission using DFT-S-OFDM following an earlier uplink transmission using OFDM, or vice -version. Specifically, base station 105 can provide different step sizes (such as larger ones) (or offsets) in a TPC command when a UE 115 is configured to switch between multiplexing techniques (i.e., DFT-S-OFDM and OFDM) for an uplink transmission. These step sizes can be larger than the step sizes (or compensations) included in a TPC command for successively multiplexed uplink transmissions in an identical way (that is, using DFT-S-OFDM or OFDM).
[0101] [0101] Therefore, using these techniques, the UE 115 may be able to identify a faster steady state power level for an OFDM transmission following a DFT-S-OFDM transmission or vice versa. The techniques described above can be related to the determination of a transmission power for a PUSCH or PUCCH transmission. In some instances, for PUSCH transmissions, the UE 115 may switch between DFT-S-OFDM and OFDM in a first transmission or during HARQ retransmissions. That is, in some examples, the different step sizes to be used when the waveform is changed can be applied to all changes in the waveform. Alternatively, in other examples, the different step sizes can be applied only when the waveform changes at specific HARQ transmission rates (such as, for example, only in the first transmission).
[0102] [0102] Figure 7 shows an example of a process flow 700 for power control in NR systems according to several aspects of the present disclosure. Process flow 700 shows aspects of the techniques performed by a base station 105-a, which can be an example of a base station 105 described with reference to Figure 1. Process flow 700 also shows aspects of techniques performed by a UE 115 -a, which can be an example of a UE 115 described with reference to Figure 1.
[0103] [0103] In 705, UE 115-a can identify data or control information to transmit to base station 105-a, and UE 115-a can transmit a programming request to base station 105-a requesting resources for an uplink transmission. In other cases, the UE 115-a may not transmit the scheduling request (as, for example, if the UE 115-a is programmed on a persistent or semi-persistent basis). At 710, base station 105-a can program UE 115-a for uplink transmission. For example, base station 105-a can identify resources for uplink transmission and base station 105-a can allocate those resources to UE 115-a for uplink transmission.
[0104] [0104] In 715, base station 105-a can transmit control information (such as, for example, DCI) to UE 115-a. Control information can include an uplink lease, a TPC command, MCS index values, effective code rate index values, priority information (such as channel priority information or transmission type) and the like . An uplink lease can indicate which uplink resources are scheduled for an uplink transmission by UE 115-a. A TPC command can include a compensation that indicates a change in transmission power from a current or standard transmission power for the UE 115-a. In some cases, the TPC command may specify a transmission power for subsequent transmissions by the UE 115-a. The effective code rate index values can include a list of indexes that correspond to different effective code rates. In some cases, DCI can be transmitted according to a dedicated format.
[0105] [0105] At 720, UE 115-a can determine a transmit power for the transmission of uplink to base station 105-a based on DCI and other factors. For example, the UE 115-a can determine transmission power based on a number of factors, including the TPC command, an effective code rate, a PUCCH format, the number of resource blocks available for a transmission. uplink control information in PUCCH, the multiplexing of a control channel and data, transmission types, route loss estimates, priority information and the like.
[0106] [0106] In some cases, the UE 115-a can determine the transmit power to a control channel during a TTI based on a number of resource blocks allocated for control information, the payload size of the control information and the number of resource elements in the resource blocks used for the transmission of control information. In some examples, the UE 115-a may determine an effective code rate for control information based on the number of resource blocks allocated for control information, the payload size of the control information and the number of control elements. resources of the resource blocks used to transmit control information, where the transmission power is determined based on the effective code rate.
[0107] [0107] For example, the UE 115-a can combine the effective code rate with an effective code rate index value received from base station 105-a and can modify the transmit power based on the value of the effective code. In some cases, the UE 115-a can determine the transmit power to the control channel during TTI based on the effective code rate and the control channel message format, where base station 105-a can indicate to the UE 115-message format or criteria for selecting the message format for the control channel. And in 725, UE 115-a can transmit control information to base station 105-a during TTI using the determined transmit power.
[0108] [0108] In some cases, the UE 115-a may determine a transmission power for the data channel of an uplink transmission during a TTI based on a frequency division multiplexing of a part of the data channel with a channel during the TTI. In some cases, the UE 115-a can determine the transmission power for the TTI data channel independent of a transmission power for the control channel during the TTI. In other cases, UE 115-a may determine a second transmit power for the part of the data channel during TTI based on the transmit power for the control channel during TTI. In some examples, the UE 115-a may determine a third transmit power for a remaining part of the data channel during the first TTI that is not multiplexed by frequency division with the control channel, the third transmit power being greater than the second transmission power for the part of the data channel multiplexed by frequency division with the control channel.
[0109] [0109] In some examples, base station 105a may send an indication on the DCI directing UE 115a to determine the transmit power for the data channel independent of the second transmit power for the data channel. While in other cases, the base station 105-a can send an indication on the DCI directing the UE 115-a to determine the transmit power to the data channel based on the transmit power of the control channel and / or to determine the transmission power differently for a part of the data channel, which is multiplexed with the control channel, than for a part of the data channel which is not multiplexed with the control channel. And in 725, UE 115-a can transmit control information to base station 105-a during TTI using the determined transmit power.
[0110] [0110] In some cases, the UE 115-a can identify data or control information to be transmitted on a first channel during a TTI, where the first channel is associated with a first transmission priority. UE 115-a can also determine that the first channel is multiplexed by frequency division with a second channel associated with a second transmission priority that is greater than the first transmission priority in a part of the TTI. In some cases, UE 115a can determine a first transmit power for the second channel independent of a second transmit power for the first channel during TTI. And in 725, UE 115-a can transmit control information to base station 105-a during TTI using the determined transmit power.
[0111] [0111] In some cases, the UE 115-a may determine the second transmit power for the first channel based on the first transmit power of the second channel and / or a maximum carrier power limit. In some cases, UE 115-a may determine the first transmission priority based on a type of the first channel and the second transmission priority based on a type of the second channel. In some examples, each of the first or second channels is used for any of: URLLC of control information or data, eMBB communication, PUCCH transmissions, PUSCH transmissions or SRS transmissions. In some cases, base station 105-a can tell UE 115-which of the first and second channels has a higher transmission priority.
[0112] [0112] Alternatively, base station 105-a may indicate to UE 115-a that certain types of communication (such as, for example, URLLC, eMBB communications, SRS transmissions) or channel types (such as, for example, PUSCH, PUCCH) have priority over other types of communication or channel types. In some cases, UE 115-a may determine the first transmission priority based on a payload of the first channel and the second transmission priority based on a payload of the second channel. And in 720, the UE 115-a can transmit the control information to the base station 105-a during the TTI using the determined transmission power.
[0113] [0113] In some cases, UE 115-a may identify a first transmission power to be used for a first transmission associated with a first priority group and a second transmission power to be used for a second transmission associated with a second priority group, where the second transmission is multiplexed by frequency division with the first transmission. For example, the second transmission can be multiplexed by frequency division with the first transmission in at least one symbol period. In some cases, the second transmission is an SRS transmission. In some cases, base station 105-a indicates to UE 115-a that certain types of transmissions (such as SRS transmissions) are associated with a lower priority than other transmissions. In some cases, the first transmission group and the second transmission group can be associated with one or more types of transmission with equal priority.
[0114] [0114] In some cases, UE 115-a may determine that a total of the first transmission power and the second transmission power exceeds a limit. In some examples, UE 115-a may determine that the total of the first transmission power and the second transmission power exceeds a limit in at least one symbol period. In some cases, the base station 105-a may indicate to the UE 115-a limit on the transmission power of the UE 115-a. And in 725, the UE 115-a can transmit either the first transmission or the second transmission based on the determination that the total of the first and second transmission power exceeds a limit and a comparison of a first priority of the first priority group with a second priority from the second priority group. For example, UE 115-a can transmit the first priority group after determining that the first priority group has a higher priority than the second priority group.
[0115] [0115] The UE 115-a can determine a transmission power for a control or data transmission using any of the above techniques - alone or in combination. For example, the UE 115-a can use a combination of effective code rate information, identification of a control format, identification of multiplexing in the frequency domain of control channels and data, compensation in a TPC command and estimates of loss of path in determining a transmission power for an uplink transmission. In some cases, base station 105-a tells UE 115-which parameters and / or criteria UE 115-a should use when determining an uplink transmission power. In other cases, the base station 105-a specifies for the UE 115-a transmission power to be used for an uplink transmission.
[0116] [0116] Figure 8 shows an example of a process flow 800 for power control in NR systems according to several aspects of the present disclosure. Process flow 800 shows aspects of the techniques performed by a base station 105-b, which can be an example of a base station 105 described with reference to Figure 1. Process flow 800 also shows aspects of techniques performed by a UE 115 -b, which can be an example of a UE 115 described with reference to Figure 1.
[0117] [0117] In 805, UE 115-b can identify data or control information to transmit to base station 105-b, and UE 115-b can transmit a programming request to base station 105-b requesting resources for a uplink transmission. In other cases, the UE 115-b may not transmit the scheduling request (as, for example, if the UE 115-b is programmed on a persistent or semi-persistent basis). At 810, base station 105-b can program UE 115-b for an uplink transmission. For example, base station 105-b can identify resources for uplink transmission and base station 105-b can allocate those resources to UE 115-b for uplink transmission.
[0118] [0118] In 815, base station 105-b can transmit control information (such as DCI) to UE 115-b. Control information can include an uplink lease, a TPC command, MCS index values, effective code rate index values, priority information (such as channel priority information or transmission type) and the like . An uplink lease can indicate which uplink resources are programmed for an uplink broadcast by UE 115-b. A TPC command can include a compensation that indicates a change in transmission power relative to a current or standard transmission power for EU 115-b. In some cases, the TPC command may specify a transmission power for subsequent transmissions by the UE 115-b. The effective code rate index values can include a list of indexes that correspond to different effective code rates. In some cases, DCI can be transmitted according to a dedicated format.
[0119] [0119] At 820, UE 115-b can determine a transmit power for the uplink transmission to base station 105-b based on DCI and other factors. For example, the UE 115-b can determine transmission power based on a number of factors, including the TPC command, an effective code rate, a PUCCH format, the number of RBs in PUCCH, the multiplexing of a control and data channel, transmission types, loss of route estimates, priority information and the like, as discussed here and previously with respect to Figure 7. In some cases, the UE 115-b can determine the first transmission power with based on a first path loss associated with a first beam direction for uplink transmission.
[0120] [0120] At 825, UE 115-b can transmit uplink control information to base station 105-b using the transmit power determined during a first TTI. In some cases, the UE 115-b transmits the control information in the first beam direction. In some cases, after transmitting uplink control information to base station 105-b, at 830, UE 115-b can identify control information from the first transmission to be repeated during a second TTI, and UE 115- b can repeat the transmission of the control information in a second beam direction different from the first direction.
[0121] [0121] At 835, base station 105-b can optionally transmit the second DCI to UE 115-b. In some cases, the second DCI schedules the repeated transmission of control information. Like the DCI transmitted earlier, the second DCI can include an uplink lease, a TPC command, MCS index values, effective code rate index values, priority information (such as channel or type priority information transmission) and the like. In addition, like the previously transmitted DCI, the second DCI can be used to indicate power control information used to determine the transmit power for repeated transmissions. For example, the second DCI may include a TPC command for the repeated transmission of control information.
[0122] [0122] In some cases, the second DCI may include a TPC command that indicates a repeated transmission to which the TPC command applies. In some cases, the second DCI is applicable to the repeated transmission of control information that occurs after a fixed delay from a time interval in which the second DCI is received. In some cases, the second DCI includes a TPC command related to the second transmit power for repeated control information transmissions that indicate different step sizes from the step sizes in the TPC command related to the first transmit power and transmitted in the previous DCI. In some cases, the TPC command includes a table that indicates a relationship between step sizes and repetition rates for repeated transmissions of control information.
[0123] [0123] Therefore, at 840, UE 115-b may be able to determine a second transmit power for the repeated transmission of uplink control information during the second TTI, and at 845, UE 115-b may transmit the control information for base station 105 -b using the second transmit power. In some cases, the transmit power for retransmission is the same as the first determined transmit power. In other cases, the transmit power for retransmission is different from the first determined transmit power. In addition, in some examples, the step sizes included in the first DCI used to configure the first transmit power (such as +1, -1 dB) may differ from the step sizes included in the second DCI used to configure the second transmission power (such as +0.5, -0.5 dB). In addition, UE 115-b can identify a second path loss associated with the second beam direction and UE 115-b can determine the second transmission power based on the second path loss.
[0124] [0124] In some cases, UE 115-b may determine a second transmit power for retransmission based on the second DCI. For example, UE 115-b can determine the second transmit power based on the TPC command in the second DCI which indicates a second transmit power to relay control information. And in some instances, UE 115-b can determine the transmission power for the second transmission and subsequent repeated transmissions based on the table that indicates a relationship between step sizes and a repetition index for the second transmission.
[0125] [0125] Figure 9 shows an example of a 900 process flow for power control in NR systems according to several aspects of the present disclosure. Process flow 900 shows aspects of the techniques performed by a base station 105-c, which can be an example of a base station 105 described with reference to Figure 1. Process flow 900 also shows aspects of techniques performed by a UE 115 -c, which can be an example of a UE 115 described with reference to Figure 1.
[0126] [0126] In 905, UE 115-c can identify data or control information to transmit to base station 105-c and UE 115-c can transmit a programming request to base station 105-c requesting resources for an uplink transmission. In other cases, the UE 115-c may not transmit the scheduling request (as, for example, if the UE 115-c is programmed on a persistent or semi-persistent basis). At 910, base station 105-c can program UE 115-c for uplink transmission. For example, base station 105-c can identify resources for uplink transmission and base station 105-c can allocate those resources to UE 115-c for uplink transmission.
[0127] [0127] In 915, base station 105-b can transmit control information (such as DCI) to UE 115-c. Control information can include an uplink lease, a TPC command, MCS index values, effective code rate index values, priority information (such as channel priority information or transmission type) and the like . In some cases, DCI indicates a waveform for uplink transmission (such as an OFDM waveform or a DFT-S-OFDM waveform). At 920, UE 115-c can determine a transmit power for transmitting uplink to base station 105-b in a first TTI using the first waveform based on a first set of one or more associated open loop parameters with the first waveform, wherein the first set of one or more open loop parameters is different from a second set of one or more open loop parameters associated with a second waveform. In 925, the UE 115-c can then transmit the uplink transmission to the base station 105-c using the first waveform.
[0128] [0128] In 930, the UE 115-c can then receive another DCI that schedules a transmission of data or control information using the second waveform in a second TTI. Therefore, in 935, UE 115-c can determine a transmission power for the data or control information to be transmitted using the second waveform based on the second set of open loop parameters and, in 940, the UE 115-c can transmit the data or control information using the second waveform that uses the determined transmission power. In some examples, the TPC command included in the other DCI (that is, received in 930), may include a first set of one or more closed loop parameters associated with the transition between the first waveform in the first TTI and the second form waveform in the second TTI and the first set of one or more closed loop parameters may be different from a second set of one or more closed loop parameters associated with successive transmissions associated with the same of the first and second waveforms.
[0129] [0129] In some examples, the first and second sets of one or more open loop parameters may include at least one of the maximum power limit per carrier, a fractional path loss constant, a signal-interference-plus ratio -noise (SINR) P0 target, MCS-based compensation for different waveforms and a closed loop step size. In some cases, each of the first waveform and the second waveform may include an OFDM waveform, a DFT-S-OFDM waveform or other waveforms.
[0130] [0130] Figure 10 shows a block diagram 1000 of a wireless device 1005 that supports power control in NR systems according to various aspects of the present disclosure. The wireless device 1005 can be an example of aspects of an UE 115, as described herein. Wireless device 1005 can include receiver 1010, communications manager 1015 and transmitter 1020. Wireless device 1005 can also include a processor. Each of these components can be in communication with each other (for example, through one or more buses).
[0131] [0131] The 1010 receiver can receive information such as packages, user data or control information associated with various information channels (such as, for example, control channels, data channels and information related to power control in NR systems, etc. .). The information can be passed on to other components of the device. Receiver 1010 can be an example of aspects of transceiver 1335 described with reference to Figure 13. Receiver 1010 can use a single antenna or set of antennas.
[0132] [0132] Communications manager 1015 can be an example of aspects of communications manager 1315 described with reference to Figure 13. Communications manager 1015 and / or at least some of its various subcomponents can be implemented in hardware, software run by a processor, firmware or any combination of them. If implemented in software run by a processor, the functions of the 1015 communications manager and / or at least some of its various subcomponents can be performed by a general purpose processor, a digital signal processor (DSP), a specific integrated circuit of application (ASIC), a field programmable port arrangement (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of them designed to perform the functions described in this disclosure.
[0133] [0133] The communications manager 1015 and / or at least some of its various subcomponents can be physically located in different positions, which includes being distributed so that parts of the functions are implemented in different physical locations by one or more physical devices. In some instances, the communications manager 1015 and / or at least some of its various subcomponents may be a separate and distinct component according to different aspects of the present disclosure. In other examples, the communications manager 1015 and / or at least some of its various subcomponents can be combined with one or more other hardware components, which include, but are not limited to,
[0134] [0134] The communications manager 1015 can determine a number of resource blocks allocated for control information to be transmitted in a control channel of a TTI, a payload size of the control information and a number of resource elements of the resource blocks used for transmitting control information and determining a transmission power to the control channel during TTI based on the number of resource blocks allocated for control information, the payload size of the control information and the number of resource elements in the resource blocks used to transmit control information.
[0135] [0135] Communications manager 1015 can also identify control information from the first transmission to be repeated during a second TTI and determine a second transmission power to repeat the transmission of control information during the second TTI, where the first power from transmission is different from the second transmission power. Communications manager 1015 can also identify data to be transmitted on a data channel during a TTI and determine a first transmission power to the data channel during TTI based on frequency division multiplexing of a portion of the communication channel. data with a control channel during TTI.
[0136] [0136] Communications manager 1015 can also determine that the first channel is multiplexed by frequency division with a second channel associated with a second transmission priority that is greater than the first transmission priority in a part of the TTI and determine a first transmission power to the second channel during TTI independent of a second transmission power to the first channel during TTI. The communications manager 1015 can also identify a first transmission power to be used for a first transmission associated with a first priority group, identify a second transmission power to be used for a second transmission associated with a second priority group, where the second transmission is multiplexed by frequency division with the first transmission and determines that a total of the first transmission power and the second transmission power exceeds a limit. The communications manager 1015 can also determine a first transmit power for the data or control information based on a first set of one or more open loop parameters associated with the first waveform, where the first set of one or more open loop parameters are different from a second set of one or more open loop parameters associated with a second waveform.
[0137] [0137] The 1020 transmitter can transmit signals generated by other components of the device. In some examples, transmitter 1020 can be placed with a receiver 1010 in a transceiver module. For example, transmitter 1020 can be an example of aspects of transceiver 1335 described with reference to Figure 13. Transmitter 1020 can use a single antenna or a set of antennas.
[0138] [0138] Transmitter 1020 can transmit control information during TTI using the determined transmission power. In some cases, transmitter 1020 can transmit data or control information in the first TTI using the determined transmission power. In some cases, transmitter 1020 may repeat the transmission of control information on the control channel during the second TTI using the second determined transmission power. In some cases, transmitter 1020 may transmit data on the data channel during the first TTI using the first determined transmission power. In some cases, transmitter 1020 may identify data or control information to be transmitted on a first channel during a TTI, the first channel associated with a first transmission priority. In some cases, the 1020 transmitter may perform a first transmission of control information on a control channel during a first TTI using a first transmission power.
[0139] [0139] In some cases, transmitter 1020 may transmit the first transmission or the second transmission based on the determination and comparison of a first priority from the first priority group with a second priority from the second priority group. In some cases, transmitter 1020 may transmit the first transmission and refrain from transmitting the second transmission based on the determination. In some cases, the 1020 transmitter can identify data or control information to transmit in a first TTI using a first waveform. In some cases, transmitter 1020 can transmit the second channel during TTI using the first determined transmit power.
[0140] [0140] In some cases, the first transmission of control information is in the first beam direction, where the repetition of transmission of control information includes: repeating the transmission of control information in a second beam direction different from the first direction of beam. In some cases, the first channel or the second channel includes one of a channel used for control or data URLLC, a channel used for eMBB communication, a PUCCH, a PUSCH or a channel used for SRS transmissions. In some cases, the second transmission includes an SRS transmission.
[0141] [0141] Figure 11 shows a block diagram 1100 of a wireless device 1105 that supports power control in NR systems in accordance with various aspects of the present disclosure. Wireless device 1105 can be an example of aspects of a wireless device 1005 or a UE 115, as described with reference to Figure 10. Wireless device 1105 can include receiver 1110, communications manager 1115 and transmitter 1120 The wireless device 1105 may also include a processor. Each of these components can be in communication with each other (for example, through one or more buses).
[0142] [0142] The 1110 receiver can receive information such as packages, user data or control information associated with various information channels (such as, for example, control channels, data channels and information related to power control in NR systems, etc. .). The information can be passed on to other components of the device. Receiver 1110 can be an example of aspects of transceiver 1335 described with reference to Figure 13. Receiver 1110 can use a single antenna or a set of antennas.
[0143] [0143] Communications manager 1115 can be an example of aspects of communications manager 1315 described with reference to Figure 13. Communications manager 1115 can include code rate manager 1125, transmission power manager 1130, transmission retry manager 1135, data channel manager 1140, transmission priority manager 1145 and transmission power limit manager 1150.
[0144] [0144] The code rate manager 1125 can determine a number of resource blocks allocated for control information to be transmitted on a TTI control channel, a payload size of the control information and a number of control elements. resources of the resource blocks used for the transmission of control information. The transmission power manager 1130 can determine a transmission power for the control channel during TTI based on the number of resource blocks allocated for control information, the payload size of the control information and the number of control elements. resources of the resource blocks used to transmit control information. In some cases, the transmit power manager 1130 may determine a second transmit power to repeat the transmission of control information during the second TTI, where the first transmit power is different from the second transmit power. In some cases, the transmit power manager 1130 can determine a first transmit power for the data channel during TTI based on a frequency division multiplexing of a part of the data channel with a control channel during TTI . In some cases, the transmit power manager 1130 can determine the first transmit power for the TTI data channel independent of a second transmit power for the control channel during the TTI.
[0145] [0145] In some cases, the transmission power manager 1130 can determine a second transmission power for the part of the data channel during TTI based on a third transmission power for the control channel during TTI. In some cases, the transmit power manager 1130 can determine a fourth transmit power for a remaining part of the data channel during the first TTI that is not multiplexed by frequency division with the control channel, where the fourth transmit power is greater than the second transmit power for the part of the data channel multiplexed by frequency division with the control channel. In some cases, the transmit power manager 1130 can determine a first transmit power for the second channel during TTI independent of a second transmit power for the first channel during TTI. In some cases, the transmission power manager 1130 may determine that the transmission power to the control channel during the TTI is additionally based on a control channel message format.
[0146] [0146] In some cases, the transmission power manager 1130 can determine the first transmission priority based on a type of the first channel and the second transmission priority based on a type of the second channel. In some cases, the transmission power manager 1130 can determine the first transmission priority based on a payload of the first channel and the second transmission priority based on a payload of the second channel. In some cases, the transmission power manager 1130 can identify a first transmission power to be used for a first transmission associated with a first priority group. In some cases, the transmission power manager 1130 can identify a second transmission power to be used for a second transmission associated with a second priority group, where the second transmission is multiplexed by frequency division with the first transmission. In some cases, the 1130 transmit power manager may determine a first transmit power for the data or control information based on a first set of one or more open loop parameters associated with the first waveform, where the first set of one or more open loop parameters is different from a second set of one or more open loop parameters associated with a second waveform.
[0147] [0147] In some cases, the transmission power manager 1130 may determine a second transmission power for the transmission of data or control information in the second TTI based on a TPC command included in the downlink control information (DCI) . In some cases, the 1130 transmit power manager can determine the second transmit power for the first channel based on the first transmit power and a maximum carrier power limit. In some cases, each of the first waveform and the second waveform includes an orthogonal frequency division multiplexing (OFDM) waveform or a discrete Fourier transform (DFT) spread OFDM waveform. In some cases, each of the first and second sets of one or more open loop parameters includes at least one of the maximum carrier power limit, a fractional path loss constant, a signal-interference-more-noise ratio ( SINR) Target P0, a compensation based on the modulation and coding scheme (MCS) for different waveforms and a step size in closed loop.
[0148] [0148] The transmission retry manager 1135 can identify control information of the first transmission to be repeated during a second TTI. The data channel manager 1140 can identify data to be transmitted on a data channel during a
[0149] [0149] The transmit power limit manager 1150 can determine that a total of the first transmit power and the second transmit power exceeds a limit. In some cases, the second transmission is multiplexed by frequency division with the first transmission in at least one symbol period, and where the determination that the total of the first transmission power and the second transmission power exceeds a limit is necessary to determine that the total of the first transmission power and the second transmission power in the period of at least one symbol exceeds the limit.
[0150] [0150] The 1120 transmitter can transmit signals generated by other components of the device. In some examples, transmitter 1120 can be placed with a receiver 1110 in a transceiver module. For example, transmitter 1120 can be an example of aspects of transceiver 1335 described with reference to Figure 13. Transmitter 1120 can use a single antenna or a set of antennas.
[0151] [0151] Figure 12 shows a block diagram 1200 of a communications manager 1215 that supports power control in NR systems according to several aspects of the present disclosure. Communications manager 1215 can be an example of aspects of a communications manager 1015, a communications manager 1115 or a communications manager 1315 described with reference to Figures 10, 11 and 13. Communications manager 1215 can include the communications manager code rate 1220, the transmit power manager 1225, the retry transmit manager 1230, the data channel manager 1235, the transmit priority manager 1240, the transmit power limit manager 1245, the loss of path 1250 and DCI manager 1255. Each of these modules can communicate, directly or indirectly, with each other (as, for example, through one or more buses).
[0152] [0152] The code rate manager 1220 can determine a number of resource blocks allocated for control information to be transmitted in a TTI control channel, a payload size of the control information and a number of control elements. resources of the resource blocks used for the transmission of control information. In some cases, the code rate manager 1220 may determine an effective code rate for control information based, at least in part, on the number of resource blocks allocated for control information, the payload size of the information control and the number of resource elements in the resource blocks used for transmitting control information, where the transmission power is determined based, at least in part, on the effective code rate.
[0153] [0153] The transmit power manager 1225 can determine a transmit power for the control channel during TTI based on the number of resource blocks allocated for control information, the payload size of the control information and the number of resource elements of the resource blocks used to transmit control information. In some cases, the transmit power manager 1225 may determine a second transmit power to repeat the transmission of control information during the second TTI, where the first transmit power is different from the second transmit power. In some cases, the transmit power manager 1225 can determine a first transmit power for the data channel during TTI based on a frequency division multiplexing of a part of the data channel with a control channel during TTI . In some cases, the transmit power manager 1225 can determine the first transmit power for the TTI data channel independent of a second transmit power for the control channel during the TTI.
[0154] [0154] In some cases, the transmit power manager 1225 may determine a second transmit power for the part of the data channel during TTI based on a third transmit power for the control channel during TTI. In some cases, the transmit power manager 1225 can determine a fourth transmit power for a remaining part of the data channel during the first TTI that is not multiplexed by frequency division with the control channel, where the fourth transmit power is greater than the second transmit power for the part of the data channel multiplexed by frequency division with the control channel. In some cases, the transmit power manager 1225 can determine a first transmit power for the second channel during TTI independent of a second transmit power for the first channel during TTI. In some cases, the transmit power manager 1225 may determine that the transmit power to the control channel during TTI is also based on a control channel message format.
[0155] [0155] In some cases, the transmission power manager 1225 can determine the first transmission priority based on a type of the first channel and the second transmission priority based on a type of the second channel. In some cases, the transmission power manager 1225 can determine the first transmission priority based on a payload of the first channel and the second transmission priority based on a payload of the second channel. In some cases, the transmission power manager 1225 can identify a first transmission power to be used for a first transmission associated with a first priority group. In some cases, the transmission power manager 1225 can identify a second transmission power to be used for a second transmission associated with a second priority group, where the second transmission is multiplexed by frequency division with the first transmission.
[0156] [0156] In some cases, the transmit power manager 1225 may determine a first transmit power for the data or control information based on a first set of one or more open loop parameters associated with the first waveform, where the first set of one or more open loop parameters is different from a second set of one or more open loop parameters associated with a second waveform, determining a second transmission power for the transmission of data or control information in the second TTI based on a TPC command included in the DCI, and determine the second transmit power for the first channel based on the first transmit power and a maximum carrier power limit. In some cases, each of the first and second waveforms includes an OFDM waveform or a DFT-S-OFDM waveform. In some cases, each of the first and second sets of one or more open loop parameters includes at least one of the maximum carrier power limit, a fractional path loss constant, a target SINR P0, compensation based on MCS for different waveforms and a closed loop step size.
[0157] [0157] The transmission retry manager 1230 can identify control information from the first transmission to be repeated during a second TTI. The data channel manager 1235 can identify data to be transmitted on a data channel during a TTI. The transmission priority manager 1240 can determine that the first channel is multiplexed by frequency division with a second channel associated with a second transmission priority that is higher than the first transmission priority in a part of the TTI and determine that the first group of priorities is associated with a higher priority than the second priority group. In some cases, each of the first transmission group and the second transmission group is associated with one or more types of transmission with equal priority.
[0158] [0158] The transmit power limit manager 1245 can determine that a total of the first transmit power and the second transmit power exceeds a limit. In some cases, the second transmission is multiplexed by frequency division with the first transmission in at least one symbol period, and where the determination that the total of the first transmission power and the second transmission power exceeds a limit includes: determining that the total of the first transmission power and the second transmission power in the period of at least one symbol exceeds the limit.
[0159] [0159] The path loss manager 1250 can identify a first path loss associated with the first transmission of control information, where the first transmission power is determined based on the first path loss and identify a second path loss associated with repeated transmission of control information, where the second transmission power is determined based on the second loss of travel.
[0160] [0160] The DCI manager 1255 can receive the DCI that includes a TPC command related to the second transmit power to repeat the transmission of the control information, where the second transmit power is determined based on the TPC command. In some cases, the DCI manager 1255 may identify a table in the TPC command that indicates a relationship between step sizes and repetition rates for repeated transmissions of control information, where the second transmission power is determined based on the table and on a repetition index of the repeated transmission. In some cases, the DCI manager 1255 may receive the DCI that schedules a transmission of data or control information using the second waveform in a second TTI. In some cases, the DCI additionally indicates whether the TPC command is applicable to the repeated transmission of control information.
[0161] [0161] In some cases, DCI additionally indicates a repeated transmission to which the TPC command applies. In some cases, DCI is applicable to repeated transmissions of programmed control information after a fixed delay of a time interval in which DCI is received. In some cases, a first set of one or more step sizes in the TPC command related to the second transmit power to repeat the transmission of control information is different from a second set of one or more steps in another TPC command related to the first transmission power. In some cases, the TPC command includes a first set of one or more closed loop parameters associated with the transition between the first waveform in the first TTI and the second waveform in the second TTI and the first set of one or more parameters Closed loop is different from a second set of one or more closed loop parameters associated with successive transmissions associated with the same first and second waveforms.
[0162] [0162] Figure 13 shows a diagram of a 1300 system that includes a 1305 device that supports power control in NR systems according to various aspects of the present disclosure. The device 1305 can be an example or include the components of the wireless device 1005, wireless device 1105 or an UE 115, as described above, for example, with reference to Figures 10 and
[0163] [0163] The 1320 processor may include an intelligent hardware device (such as a general purpose processor, DSP, central processing unit (CPU), microcontroller, ASIC, FPGA, programmable logic device , a discrete gate component or transistor logic, a discrete hardware component, or any combination thereof). In some cases, the 1320 processor can be configured to perform a memory array using a memory controller. In other cases, a memory controller can be integrated with the 1320 processor. The 1320 processor can be configured to execute computer-readable instructions stored in memory to perform various functions (such as functions or tasks that support control of NR systems).
[0164] [0164] The 1325 memory can include random access memory (RAM) and exclusive read memory (ROM). The 1325 memory can store computer-readable and computer-executable 1330 software, which includes instructions that, when executed, cause the processor to perform the various functions described here. In some cases, the 1325 memory may contain, among other things, a basic input / output system (BIOS) that can control the basic functioning of hardware or software, such as interaction with peripheral components or devices.
[0165] [0165] The 1330 software may include code to implement aspects of the present disclosure, which includes code to support power control in NR systems. The 1330 software can be stored on a non-transitory computer-readable medium, such as system memory or other memory. In some cases, the 1330 software may not be directly executable by the processor, but it can cause a computer (such as when compiled and run) to perform the functions described here.
[0166] [0166] The 1335 transceiver can communicate bidirectionally, through one or more antennas, with wired or wireless links, as described above. For example, the 1335 transceiver can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The 1335 transceiver can also include a modem to modulate the packets and supply the modulated packets to the antennas for transmission and to demodulate the packets received from the antennas.
[0167] [0167] In some cases, the wireless device may include a single 1340 antenna. However, in some cases, the device may have more than one 1340 antenna, which may be able to transmit or receive multiple wireless transmissions concurrently.
[0168] [0168] The 1345 I / O controller can manage input and output signals for the device
[0169] [0169] Figure 14 shows a flow chart showing a 1400 method for power control in NR systems according to several aspects of the present disclosure. The 1400 method operations can be implemented by a UE 115 or its components as described herein. For example, method 1400 operations can be performed by a communications manager as described with reference to Figures 10 through 13. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 can perform aspects of the functions described below using special-purpose hardware.
[0170] [0170] In block 1405, UE 115 can determine a number of resource blocks allocated for the control information to be transmitted in a TTI control channel, a payload size of the control information and a number of elements of resource blocks used to transmit control information. Block 1405 operations can be performed according to the methods described here. In certain examples, aspects of block 1405 operations can be performed by a code rate manager as described with reference to Figures 10 to 13.
[0171] [0171] In block 1410, the UE 115 can determine a transmission power for the control channel during the TTI based, at least in part, on the number of resource blocks allocated for control information, on the payload size of the control information and the number of resource elements in the resource blocks used for the transmission of control information. Block 1410 operations can be performed according to the methods described here. In certain examples, aspects of block 1410 operations can be performed by a transmission power manager as described with reference to Figures 10 to 13.
[0172] [0172] In block 1415, the UE 115 can transmit the control information during the TTI using the determined transmission power. Block 1415 operations can be carried out according to the methods described here. In certain examples, aspects of the operations of block 1415 can be performed by a transmitter as described with reference to Figures 10 to 13.
[0173] [0173] Figure 15 shows a flow chart showing a 1500 method for power control in NR systems according to several aspects of the present disclosure. The 1500 method operations can be implemented by a UE 115 or its components as described herein. For example, method 1500 operations can be performed by a communications manager as described with reference to Figures 10 through 13. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 can perform aspects of the functions described below using hardware for special purposes.
[0174] [0174] In block 1505, the UE 115 can perform a first transmission of control information on a control channel during a first TTI using a first transmission power. Block 1505 operations can be carried out according to the methods described here. In certain examples, aspects of block 1505 operations can be performed by a transmitter as described with reference to Figures 10 to 13.
[0175] [0175] In block 1510, UE 115 can identify control information of the first transmission to be repeated during a second TTI. The operations of block 1510 can be carried out according to the methods described here. In certain examples, aspects of block 1510 operations can be performed by a transmission repeat manager as described with reference to Figures 10 to 13.
[0176] [0176] In block 1515, UE 115 can determine a second transmission power to repeat the transmission of control information during the second TTI, where the first transmission power is different from the second transmission power. The operations of block 1515 can be carried out according to the methods described here. In certain examples, aspects of block 1515 operations can be performed by a transmission power manager as described with reference to Figures 10 to 13.
[0177] [0177] In block 1520, the UE 115 can repeat the transmission of control information on the control channel during the second TTI using the second determined transmission power. Block 1520 operations can be performed according to the methods described here. In certain examples, aspects of block 1520 operations can be performed by a transmitter as described with reference to Figures 10 to 13.
[0178] [0178] Figure 16 shows a flow chart showing a 1600 method for power control in NR systems according to several aspects of the present disclosure. The 1600 method operations can be implemented by a UE 115 or its components as described herein. For example, method 1600 operations can be performed by a communications manager as described with reference to Figures 10 through 13. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 can perform aspects of the functions described below using hardware for special purposes.
[0179] [0179] In block 1605, UE 115 can identify data to be transmitted in a data channel during a TTI. Block 1605 operations can be performed according to the methods described here. In certain examples, aspects of the 1605 block operations can be performed by a data channel manager as described with reference to Figures 10 to 13.
[0180] [0180] In block 1610, the UE 115 can determine a first transmission power for the data channel during the TTI based, at least in part, on a frequency division multiplexing of a part of the data channel with a channel during the TTI. The operations of block 1610 can be carried out according to the methods described here. In certain examples, aspects of the operations of block 1610 can be performed by a transmission power manager as described with reference to Figures 10 to 13.
[0181] [0181] In block 1615, UE 115 can transmit data on the data channel during the first TTI using the first determined transmission power. The operations of block 1615 can be carried out according to the methods described here. In certain examples, aspects of the operations of block 1615 can be performed by a transmitter as described with reference to Figures 10 to 13.
[0182] [0182] Figure 17 shows a flow chart showing a 1700 method for power control in NR systems according to several aspects of the present disclosure. The 1700 method operations can be implemented by a UE 115 or its components as described herein. For example, method 1700 operations can be performed by a communications manager as described with reference to Figures 10 through 13. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 can perform aspects of the functions described below using special-purpose hardware.
[0183] [0183] In block 1705, UE 115 can identify data or control information to be transmitted on a first channel during a TTI, the first channel associated with a first transmission priority. Block 1705 operations can be carried out according to the methods described here. In certain examples, aspects of block 1705 operations can be performed by a transmitter as described with reference to Figures 10 to 13.
[0184] [0184] In block 1710, UE 115 can determine that the first channel is multiplexed by frequency division with a second channel associated with a second transmission priority that is greater than the first transmission priority in a part of the TTI. Block 1710 operations can be carried out according to the methods described here. In certain examples, aspects of the 1710 block operations can be performed by a transmission priority manager, as described with reference to Figures 10 to 13.
[0185] [0185] In block 1715, UE 115 can determine a first transmission power for the second channel during TTI independent of a second transmission power for the first channel during TTI. Block 1715 operations can be carried out according to the methods described here. In certain examples, aspects of the operations of block 1715 can be performed by a transmission power manager as described with reference to Figures 10 to 13.
[0186] [0186] In block 1720, UE 115 can transmit the second channel during TTI using the first determined transmission power. Block operations
[0187] [0187] Figure 18 shows a flow chart showing an 1800 method for power control in NR systems according to several aspects of the present disclosure. The 1800 method operations can be implemented by a UE 115 or its components as described herein. For example, 1800 method operations can be performed by a communications manager as described with reference to Figures 10 through 13. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 can perform aspects of the functions described below using special-purpose hardware.
[0188] [0188] In block 1805, UE 115 can identify a first transmission power to be used for a first transmission associated with a first priority group. Block 1805 operations can be carried out according to the methods described here. In certain examples, aspects of the 1805 block operations can be performed by a transmission power manager as described with reference to Figures 10 to 13.
[0189] [0189] In block 1810, UE 115 can identify a second transmission power to be used for a second transmission associated with a second priority group, where the second transmission is multiplexed by frequency division with the first transmission. Block 1810 operations can be performed according to the methods described here. In certain examples, aspects of the 1810 block's operations can be performed by a transmission power manager as described with reference to Figures 10 to 13.
[0190] [0190] In block 1815, UE 115 can determine that a total of the first transmission power and the second transmission power exceeds a limit. Block 1815 operations can be carried out according to the methods described here. In certain examples, aspects of the operations of block 1815 can be performed by a transmission power limit manager, as described with reference to Figures 10 to 13.
[0191] [0191] In block 1820, UE 115 can transmit the first transmission or the second transmission based, at least in part, on determining and comparing a first priority from the first priority group with a second priority from the second priority group . Block 1820 operations can be carried out according to the methods described here. In certain examples, aspects of the operations of the 1820 block can be performed by a transmitter as described with reference to Figures 10 to 13.
[0192] [0192] Figure 19 shows a flow chart showing a 1900 method for power control in NR systems according to several aspects of the present disclosure. The 1900 method operations can be implemented by a UE 115 or its components as described herein. For example, method 1900 operations can be performed by a communications manager as described with reference to Figures 10 through 13. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform functions described below. Additionally or alternatively, the UE 115 can perform aspects of the functions described below using special-purpose hardware.
[0193] [0193] In block 1905, UE 115 can identify data or control information to transmit in a first TTI using a first waveform. The operations of the 1905 block can be carried out according to the methods described here. In certain examples, aspects of the operations of the 1905 block can be performed by a transmitter as described with reference to Figures 10 to 13.
[0194] [0194] In block 1910, UE 115 may determine a first transmission power for data or control information based, at least in part, on a first set of one or more open loop parameters associated with the first form of wave, in which the first set of one or more open loop parameters is different from a second set of one or more open loop parameters associated with a second waveform. Block 1910 operations can be carried out according to the methods described here. In certain examples, aspects of the operations of block 1910 can be performed by a transmission power manager as described with reference to Figures 10 to 13.
[0195] [0195] In block 1915, UE 115 can transmit data or control information in the first TTI using the determined transmission power. Block 1915 operations can be carried out according to the methods described here. In certain examples, aspects of the operations of block 1915 can be performed by a transmitter as described with reference to Figures 10 to 13.
[0196] [0196] It should be noted that the methods described above describe possible implementations and that the operations and steps can be redeployed or otherwise modified so that other implementations are possible. In addition, aspects from two or more of the methods can be combined.
[0197] [0197] The techniques described here can be used for several wireless communication systems, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA) , orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA) and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system can implement radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers the IS-2000, IS-95 and IS-856 standards. IS-2000 versions are commonly referred to as CDMA2000 lx, lx, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes broadband CDMA (WCDMA) and other CDMA variants. A TDMA system can implement radio technology like the Global Communications System
[0198] [0198] An OFDMA system can implement radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (WiFi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash -OFDM, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE 3GPP and LTE-A are versions of the Universal Mobile Telecommunications System (UMTS) that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, NR and the Global Mobile Communications System (GSM) are described in documents from an organization called the “3rd Generation Partnership Project” ( 3GPP). CDMA2000 and UMB are described in documents from an organization called “3rd Generation Partnership Project 2” (3GPP2). The techniques described here can be used for the systems and radio technologies mentioned above, as well as for other radio systems and technologies. Although aspects of an LTE or NR system can be described for exemplary purposes, and LTE or NR terminology can be used in much of the disclosure, the techniques described here are applicable in addition to LTE or NR applications.
[0199] [0199] In LTE / LTE-A networks, which include the networks described here, the term Evolved B node (eNB) can generally be used to describe base stations. The wireless communication system or systems described here may include a heterogeneous LTE / LTEA or NR network in which different types of evolved B-node (eNBs) provide coverage for different geographic regions. For example, each eNB, gNB or base station can provide communication coverage for a macro cell, a small cell or other types of cell. The term “cell” can be used to describe a base station, a carrier or component carrier associated with a base station or a coverage area (such as sector, etc.) of a carrier or base station, depending on the context .
[0200] [0200] Base stations may include or may be referred to by those skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, eNodeB (eNB), a NodeB next generation (gNB), Native Node, Native eNode or some other suitable terminology. The geographic coverage area of a base station can be divided into sectors, making up only a part of the coverage area. The wireless communications system or systems described herein may include base stations of different types (such as, for example, macro base stations or small cells). The UEs described herein may be able to communicate with various types of base stations and network equipment, which includes macro eNBs, small cell eNBs, gNBs, relay base stations and the like. There may be overlapping geographic coverage areas for different technologies.
[0201] [0201] A macro cell generally covers a relatively large geographical area (such as a radius of many kilometers) and can allow unrestricted access by UEs with service subscriptions with the network provider. A small cell is a lower power base station, compared to a macro cell, which can operate in the same frequency band or in different frequency bands (such as licensed, unlicensed, etc.). Small cells can include pico-cells, femto-cells and micro-cells, according to several examples. A peak cell can generally cover a relatively smaller geographic area and can allow unrestricted access by UEs with service subscriptions from the network provider. A femto-cell can also cover a relatively small geographical area (a residence, for example) and can provide restricted access by UEs that are associated with the femto-cell (UEs in a closed subscriber group (CSG), UEs for users in the residence and the like, for example). An eNB for a macro cell can be referred to as a macro-eNB. A small cell eNB can be referred to as small cell eNB, pico-eNB, femto-eNB or native eNB. An eNB can support one or multiple (such as, two, three, four and the like) cells (such as, for example, component carriers).
[0202] [0202] The wireless communication system or systems described here can support synchronous or asynchronous operation. For synchronous operation, base stations may have similar frame timings and transmissions from different base stations may be approximately time aligned. For asynchronous operation, base stations may have different frame timings and transmissions from different base stations may not be time aligned. The techniques described here can be used for synchronous or asynchronous operation.
[0203] [0203] The downlink streams described here can also be called direct link streams, while uplink streams can also be called reverse link streams. Each communication link described here, which includes, for example, the wireless communication system 100 and 200 in Figures 1 and 2 - can include one or more carriers, where each carrier can be a signal consisting of multiple subcarriers (such as example, waveform signals of different frequencies).
[0204] [0204] The description presented here, in connection with the attached drawings, describes exemplary configurations and does not represent all examples that can be implemented or that are within the scope of the claims. The term "exemplary" used here means "to serve as an example, instance or illustration", not "preferred" or "advantageous over other examples". The detailed description includes specific details for the purpose of providing an understanding of the techniques described. These techniques, however, can be practiced without these specific details. In some cases, well-known structures and devices are shown in the form of a block diagram to avoid obscuring the exemplary concepts described.
[0205] [0205] In the attached figures, components or similar characteristics may have the same reference marker. In addition, several components of the same type can be distinguished by following the reference marker by a dashed line and a second marker that distinguishes between similar components. If only the first reference marker is used in the report,
[0206] [0206] The information and signals described here can be represented using any of several different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols and chips that can be referenced throughout the above disclosure can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination of them.
[0207] [0207] The various illustrative blocks and modules described in connection with the present disclosure can be implemented or executed with a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic, components discrete hardware or any combination of these designed to perform the functions described here. A general purpose processor can be a microprocessor, but, alternatively, the processor can be any conventional processor, controller, microcontroller or state machine. A processor can also be implemented as a combination of computing devices (such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors together with a DSP core or any other configuration).
[0208] [0208] The functions described here can be implemented in hardware, software executed by a processor, firmware or any combination of them.
[0209] [0209] The computer-readable medium includes both non-transitory computer storage medium and communication medium, which includes any medium that facilitates the transfer of a computer program from one place to another.
[0210] [0210] The description here is provided to allow a person skilled in the art to manufacture or use the disclosure. Various changes in the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other variations without abandoning the scope of the disclosure. Thus, the disclosure should not be limited to the examples and drawings described here, but should receive the widest range compatible with the innovative principles and characteristics disclosed here.

权利要求:
Claims (48)
[1]
1. A method for wireless communication, which comprises: determining a number of resource blocks allocated for control information to be transmitted in a transmission time interval control (TTI) control channel, a payload size of the transmission information. control and a number of resource elements of the resource blocks used to transmit control information; determine a transmission power for the control channel during the TTI based, at least in part, on the number of resource blocks allocated to the control information, the payload size of the control information and the number of resource elements the resource blocks used to transmit control information; and transmit the control information during the TTI using the determined transmission power.
[2]
2. Method according to claim 1, which further comprises: determining an effective code rate for control information based, at least in part, on the number of resource blocks allocated for control information, the size of payload of control information and the number of resource elements in the resource blocks used for the transmission of control information, where the transmission power is determined based, at least in part, on the effective code rate.
[3]
A method according to claim 1, in which determining the transmission power to the control channel during TTI is also based, at least in part, on a message format of the control channel.
[4]
4. Method for wireless communication, which comprises: performing a first transmission of control information on a control channel during a first transmission time interval (TTI) using a first transmission power; identify control information from the first transmission to be repeated during a second TTI; determining a second transmit power to repeat the transmission of control information during the second TTI, where the first transmit power is different from the second transmit power; and repeating the transmission of the control information on the control channel during the second TTI using the second determined transmission power.
[5]
5. Method according to claim 4, in which the first transmission of control information is in a first beam direction and in which the repetition of transmission of control information comprises: repeating the transmission of control information in a second beam direction different from the first beam direction.
[6]
6. Method according to claim 4, which further comprises: identifying a first path loss associated with the first transmission of control information, in which the first transmission power is determined based, at least in part, on the first loss of course; and identifying a second loss of travel associated with the repeated transmission of control information, in which the second transmission power is determined based, at least in part, on the second loss of travel.
[7]
7. Method according to claim 4, which further comprises: receiving downlink control information (DCI) which includes a transmission power control (TPC) command related to the second transmission power to repeat the transmission of the transmission information. control, where the second transmission power is determined based, at least in part, on the TPC command.
[8]
8. Method according to claim 7, wherein the DCI further indicates whether the TPC command is applicable to the repeated transmission of control information.
[9]
A method according to claim 8, wherein the DCI additionally indicates a repeated transmission to which the TPC command applies.
[10]
10. The method of claim 7, wherein the DCI is applicable to repeated transmissions of programmed control information after a fixed delay of a time interval in which the DCI is received.
[11]
A method according to claim 7, wherein a first set of one or more step sizes in the TPC command related to the second transmit power for repeating the transmission of the control information is different from a second set of one or more step sizes in another TPC command related to the first transmit power.
[12]
12. Method according to claim 7, which further comprises: identifying a table in the TPC command that indicates a relationship between step sizes and repetition rates for repeated transmissions of control information, where the second transmission power is determined with base, at least in part, on the table and on a repetition index of repeated transmission.
[13]
13. Wireless communication apparatus, comprising: means for determining a number of resource blocks allocated for control information to be transmitted in a transmission time interval control (TTI) channel, a payload size of control information, and a number of resource elements from the resource blocks used to transmit control information; means for determining transmission power to the control channel during TTI based, at least in part, on the number of resource blocks allocated for the control information, the payload size of the control information and the number of elements of resources from the resource blocks used to transmit control information; and means for transmitting control information during the TTI using the determined transmission power.
[14]
14. Apparatus according to claim 13, which further comprises: means for determining an effective code rate for control information based, at least in part, on the number of resource blocks allocated for control information, in the payload size of the control information and the number of resource elements of the resource blocks used for the transmission of the control information, where the transmission power is determined based, at least in part, on the effective code rate.
[15]
Apparatus according to claim 13, in which determining the transmission power to the control channel during the TTI is also based, at least in part, on a control channel message format.
[16]
16. An apparatus for wireless communication, comprising: means for effecting a first transmission of control information on a control channel during a first transmission time interval (TTI) using a first transmission power; means for identifying control information from the first transmission to be repeated during a second TTI; means for determining a second transmit power to repeat the transmission of control information during the second TTI, wherein the first transmit power is different from the second transmit power; and means for repeating the transmission of control information on the control channel during the second TTI using the second determined transmission power.
[17]
Apparatus according to claim 16, in which the first transmission of control information is in the first beam direction and in which the means for repeating the transmission of control information comprise: means for repeating the transmission of control information in a second beam direction different from the first beam direction.
[18]
An apparatus according to claim 16, which further comprises: means for identifying a first path loss associated with the first transmission of control information, in which the first transmission power is determined based, at least in part, on the first loss of route; and means for identifying a second loss of travel associated with the repeated transmission of control information, wherein the second transmission power is determined based, at least in part, on the second loss of travel.
[19]
An apparatus according to claim 16, which further comprises: means for receiving downlink control information (DCI) which includes a transmit power control command (TPC) related to the second transmit power to repeat the transmission of the control information, in which the second transmission power is determined based, at least in part, on the TPC command.
[20]
20. Apparatus according to claim 19, wherein the DCI additionally indicates whether the TPC command is applicable to the repeated transmission of control information.
[21]
21. Apparatus according to claim 20, wherein the DCI additionally indicates a repeated transmission to which the TPC command applies.
[22]
22. Apparatus according to claim 19, wherein the DCI is applicable to repeated transmissions of programmed control information after a fixed delay of a time interval in which the DCI is received.
[23]
23. Apparatus according to claim 19, wherein a first set of one or more step sizes in the TPC command related to the second transmit power for repeating the transmission of the control information is different from a second set of one or more step sizes in another TPC command related to the first transmit power.
[24]
24. Apparatus according to claim 19, which further comprises: means for identifying a table in the TPC command that indicates a relationship between step sizes and repetition indices for repeated transmissions of control information, where the second transmission power is determined based, at least in part, on the table and on a repetition index of repeated transmission.
[25]
25. Mobile device for wireless communication, comprising:
a processor; memory in electronic communication with the processor; and instructions stored in memory and executable when executed by the processor to make the mobile device: determine a number of resource blocks allocated for control information to be transmitted in a transmission time interval (TTI) control channel, a payload size of the control information and a number of resource elements from the resource blocks used to transmit the control information; determine a transmit power for the control channel during TTI based, at least in part, on the number of resource blocks allocated to the control information, the payload size of the control information and the number of resource elements the resource blocks used to transmit control information; and transmit the control information during the TTI using the determined transmission power.
[26]
26. Mobile device according to claim 25, wherein instructions are additionally executable by the processor to: determine an effective code rate for control information based, at least in part, on the number of resource blocks allocated to the control information, the payload size of the control information and the number of resource elements in the resource blocks used for the transmission of the control information, where the transmission power is determined based, at least in part, on the effective code rate.
[27]
27. Mobile device according to claim 25, in which determining the transmission power to the control channel during the TTI is also based, at least in part, on a control channel message format.
[28]
28. Mobile device for wireless communication, comprising: a processor; memory in electronic communication with the processor; and instructions stored in memory and executable, when executed by the processor, to make the mobile device: perform a first transmission of control information on a control channel during a first transmission time interval (TTI) using a first power of streaming; identify control information for the first transmission to be repeated during a second TTI; determine a second transmit power to repeat the transmission of control information during the second TTI, where the first transmit power is different from the second transmit power; and repeat the transmission of control information on the control channel during the second TTI using the second determined transmission power.
[29]
29. Mobile device according to claim 28, wherein the first transmission of control information is in the first beam direction and where the instructions are additionally executable by the processor to: repeat the transmission of control information in a second direction beam different from the first beam direction.
[30]
30. Mobile device according to claim 28, in which the instructions are additionally executable by the processor to: identify a first path loss associated with the first transmission of control information, in which the first transmission power is determined based on, at least in part, in the first loss of route; and identifying a second loss of travel associated with the repeated transmission of control information, in which the second transmission power is determined based, at least in part, on the second loss of travel.
[31]
31. Mobile device according to claim 28, in which the instructions are additionally executable by the processor to: receive downlink control information (DCI) that includes a transmit power control (TPC) command related to the second power of transmission to repeat the transmission of control information, where the second transmission power is determined based, at least in part, on the TPC command.
[32]
32. Mobile device according to claim 31, wherein the DCI additionally indicates whether the TPC command is applicable to the repeated transmission of control information.
[33]
33. Mobile device according to claim 32, wherein the DCI additionally indicates a repeated transmission to which the TPC command applies.
[34]
34. Mobile device according to claim 31, wherein the DCI is applicable to repeated transmissions of programmed control information after a fixed delay of a time interval in which the DCI is received.
[35]
35. A mobile device according to claim 31, wherein a first set of one or more step sizes in the TPC command related to the second transmission power for repeating the transmission of the control information is different from a second set of one or more more step sizes in another TPC command related to the first transmit power.
[36]
36. Mobile device according to claim 31, in which the instructions are additionally executable by the processor to: identify a table in the TPC command that indicates a relationship between step sizes and repetition indices for repeated transmissions of control information, where the second transmission power is determined based, at least in part, on the table and on a repetition index of repeated transmission.
[37]
37. Medium readable by a non-transitory computer that stores code for wireless communication, the code comprising instructions executable by a processor to: determine a number of resource blocks allocated for control information to be transmitted in a control channel of a transmission time interval (TTI), a payload size of the control information, and a number of resource elements used from the resource blocks; determine a transmission power for the control channel during the TTI based, at least in part, on the number of resource blocks allocated to the control information, the payload size of the control information and the number of resource elements used in resource blocks; and transmit the control information during the TTI using the determined transmission power.
[38]
38. Medium readable by a non-transitory computer, according to claim 37, in which the instructions are additionally executable by the processor to: determine an effective code rate for the control information based, at least in part, on the number of resource blocks allocated for the control information, the payload size of the control information and the number of resource elements of the resource blocks used for transmission of the control information, where the transmission power is determined based on, by least in part, at the actual code rate.
[39]
39. Non-transient computer readable medium according to claim 37, in which determining the transmission power to the control channel during the TTI is also based, at least in part, on a message channel format. control.
[40]
40. Medium readable by a non-transitory computer that stores code for wireless communication, the code comprising instructions executable by a processor to: effect a first transmission of control information on a control channel during a first transmission time interval ( TTI) using a first transmission power; identify control information from the first transmission to be repeated during a second TTI; determining a second transmit power to repeat the transmission of control information during the second TTI, where the first transmit power is different from the second transmit power; and repeating the transmission of the control information on the control channel during the second TTI using the second determined transmission power.
[41]
41. Medium capable of being read by a non-transitory computer, according to claim 40, in which the first transmission of the control information is in the first beam direction and in which the instructions are additionally executable by the processor to: repeat the transmission of the information control in a second beam direction other than the first beam direction.
[42]
42. Medium capable of being read by a non-transitory computer, according to claim 40, in which the instructions are additionally executable by the processor to: identify a first loss of path associated with the first transmission of control information, in which the first power of transmission is determined based, at least in part, on the first loss of travel; and identifying a second loss of travel associated with the repeated transmission of control information, in which the second transmission power is determined based, at least in part, on the second loss of travel.
[43]
43. Medium that can be read by a non-transitory computer, according to claim 40, in which the instructions are additionally executable by the processor to: receive downlink control information (DCI) that includes a transmission power control (TPC) command ) related to the second transmit power to repeat the transmission of control information, where the second transmit power is determined based, at least in part, on the TPC command.
[44]
44. Medium that can be read by a non-transitory computer, according to claim 43, in which the DCI additionally indicates whether the TPC command is applicable to the repeated transmission of control information.
[45]
45. Medium readable by a non-transitory computer, according to claim 44, wherein the DCI additionally indicates a repeated transmission to which the TPC command applies.
[46]
46. Non-transient computer readable medium according to claim 43, in which the DCI is applicable to repeated transmissions of programmed control information after a fixed delay of a time interval in which the DCI is received.
[47]
47. Non-transient computer readable medium according to claim 43, wherein a first set of one or more step sizes in the TPC command related to the second transmit power to repeat the transmission of control information is different from a second set of one or more steps in another TPC command related to the first transmission power.
[48]
48. Medium that can be read by a non-transitory computer, according to claim 43, in which the instructions are additionally executable by the processor to: identify a table in the TPC command that indicates a relationship between step sizes and repetition rates for repeated transmissions control information, where the second transmission power is determined based, at least in part, on the table and on a repetition index of repeated transmission.
Petition 870190127239, of 12/03/2019, p. 126/148
1/19
), *
IN
D E F G
38 && +
386 & +
), *
IN
D E F G
38 && + Repeated
2utro38 && +
386 & +
), *
IN
D E F G
E D
38 && +
386 & +
), *
IN
D E F G
38 && +
386 & +
Highest Transmission Priority
SRS transmission
), *
IN
D E F G
38 && +
386 & +
Highest Transmission Priority
SRS transmission
Scaled Transmission
), *
D D
Programming Request
Program EU for UL transmission
Control Information Determine Transmission Power for Uplink Transmission
Data / Control Information
), *
AND IS
Programming Request
Program EU for UL Transmission
Control Information
Determine Transmission Power
Control Information Identify Control Information to Repeat
Control Information Determine Second Transmission Power for Repeated Transmission
Control Information
), *
F F
Programming Request
Program EU for UL Transmission
Control Information Determine Power
Transmission for Uplink Transmission Using First Waveform
Data / Control Information
Control Information Determine Second
Transmission Power for Repeated Transmission
Data / Control Information
), *
Receiver Manager Transmitter Communications
), *
Communications Manager Code Rate Manager
Transmission Power Manager
Replay Transmission Manager Receiver Transmitter Data Channel Manager
Transmission Priority Manager
Transmission Power Limit Manager
), *
Transmission Code Rate Manager Power Manager
Transmission Data Channel Manager Repeat Manager
Transmission Limit Manager Priority Manager Transmission Power
Track Loss Manager DCI Manager
), *
I / O Controller Transceiver Antenna
6RIWZDUH 0HPRU Communications Manager
Processor
), *
Determine a number of resource blocks allocated for control information, a payload size of the control information and a number of resource elements of the resource blocks used for transmitting control information Determine a transmission power for the control channel during TTI based on determined parameters Transmitting control information during TTI using the determined transmission power
), *
Perform a first transmission of control information on a control channel during a first TTI using a first transmission power Identify control information of the first transmission to be repeated during a second TTI Determine a second transmission power to repeat transmission of control information during the second TTI, where the first transmission power is different from the second transmission power Repeat the transmission of control information in the control channel during the second TTI using the second determined transmission power
), *
Identify data to be transmitted on a data channel during a TTI
Determine a first transmission power for the data channel during the TTI based on a frequency division multiplexing of a part of the data channel with a control channel during the TTI Transmit the data in the data channel during the first TTI using the first determined transmission power
), *
Identify data or control information to be transmitted on a first channel during a TTI, the first channel associated with the first transmission priority Determine that the first channel is multiplexed by frequency division with a second channel associated with a second transmission priority that is higher than the first transmission priority in a part of the TTI Determine a first transmission power for the second channel during the TTI independent of a second transmission power for the first transmission channel during the TTI Transmit the second channel during the TTI using the first determined transmission power
), *
Identify a first transmission power to be used for a first transmission associated with a first priority group Identify a second transmission power to be used for a second transmission associated with a second priority group, where the second transmission is multiplexed by division of frequency with first transmission Determine that a total of the first transmission power and the second transmission power exceeds a limit Transmit or the first transmission or second transmission based on determining and comparing a first priority from the first priority group to a second priority group the second priority group
), *
Identify data or control information to be transmitted in a first TTI using a first waveform Determine a first transmission power for the data and control information based on a first set of one or more external loop parameters associated with the first shape waveform, where the first set of one or more outer loop parameters is different from a second set of one or more outer loop parameters associated with a second waveform Transmitting data and control information in a first TTI using power determined transmission
), *

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同族专利:

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公开号 | 公开日

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JP2020523831A|2020-08-06|

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WO2018227148A1|2018-12-13|

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法律状态:
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