communication method, communication devices, computer program storage medium and communication syste

专利摘要:
This application provides a communication method, a network node, and a radio access network system. The method is applied to a radio access network system including a first network node and a second network node, and the first network node communicates with the second network node through a first communication interface. The method includes: receiving, by the first network node, the first configuration information of the second network node, where the first configuration information includes a set of servant cells configured for a terminal device, the first configuration information also indicating a status of a secondary cell, and the first configuration information is generated by the second network node in a first protocol layer; send, by the first network node, the first configuration information to the terminal device; and sending, through the first network node, the first indication information to the terminal device, where the first indication information includes information about a state of at least one secondary cell, at least one secondary cell belongs to the set of servant cells, and the first indication information is generated by the first network node in a second protocol layer.
公开号:BR112019026671A2
申请号:R112019026671-2
申请日:2018-06-15
公开日:2020-06-30
发明作者:Rui Wang；Mingzeng Dai；Hongzhuo ZHANG；Xudong Yang；Qinghai Zeng
申请人:Huawei Technologies Co., Ltd.；
IPC主号:

专利说明:

[0001] [0001] This application claims priority to Chinese Patent Application No. 201710459213.4, filed at the Chinese Patent Institute on June 16, 2017 and entitled "COMMUNICATION METHOD, NETWORK NODE, AND RADIO ACCESS NETWORK SYSTEM", which is incorporated herein by reference in its entirety. TECHNICAL FIELD
[0002] [0002] This request is related to the field of communications and, more specifically, to a method of communication, a network node, and a radio access network system. BACKGROUND
[0003] [0003] To further increase transmission bandwidth, carrier aggregation technology (carrier aggregation, CA) is introduced to the advanced long-term evolution system (Long Term Evolution Advanced, LTE-A). A main concept of carrier aggregation is to combine a plurality of component carriers (component carrier, CC) into a carrier with greater bandwidth, to support high-speed data transmission. In the state of the art, a base station can configure carrier aggregation, determine an active / inactive state of a secondary cell, and notify a terminal device about the active / inactive state of the secondary cell using signaling.
[0004] [0004] However, the development of a fifth generation communications network (fifth generation, 5G) changes a network architecture. For example, concepts of a centralized unit (CU) and a distributed unit (DU) are introduced, which are divided among themselves. In other words, a radio access network device (for example, a base station) is divided into two parts: a CU and a DU. Different layers of protocol are implemented at CU and DU. For example, a radio resource control layer (radio resource control, RRC) is implemented in CU, and a media access control layer (MAC), a physical layer (physical, PHY), and similar activities are implemented at DU. For another example, on the 5G network, new technology is also being developed for a new relay node. For example, a protocol stack architecture of only a layer 2 (for example, including a radio link control layer (radio link control, RLC) and a MAC layer) and a layer 1 (for example, including a layer PHY) is deployed at the relay node, and a protocol stack above layer 2, like an RRC layer, is not deployed. Therefore, the data or signaling generated by a host base station needs to be forwarded to a terminal device by the relay node.
[0005] [0005] The original method of configuring carrier aggregation is no longer applicable to the new network architecture. How to configure carrier aggregation for a terminal device in the new network architecture becomes a technical problem to be solved urgently. SUMMARY
[0006] [0006] This application provides a communication method, a network node, and a radio access network system, so that carrier aggregation can be configured for a terminal device in a new network architecture.
[0007] [0007] According to a first aspect, a method of communication is provided. The method is applied to a radio access network system, including a first network node and a second network node, the first network node communicates with the second network node through a first communications interface, and the method includes: receiving, by the first network node, first configuration information from the second network node, where the first configuration information includes a set of servant cells configured for a terminal device, oThe set of servant cells includes at least one secondary cell , the first configuration information further indicates a secondary cell state, the secondary cell state is an active state or an inactive state, and the first configuration information is generated by the second network node in a first protocol layer; send, by the first node in the network, the first configuration information to the terminal device; and sending, through the first node in the network, the first indication information to the terminal device, where the first indication information includes information about a state of at least one first secondary cell, at least one first secondary cell belongs to the set of servant cells , and the first indication information is generated by the first network node in a second protocol layer.
[0008] [0008] The at least one first secondary cell included in the first indication information can be a subset of the set of servant cells in the first configuration information, or it can be all the secondary cells in the set of servant cells. This is not specifically limited in this application.
[0009] [0009] In a possible project, the first indication information can include all secondary cells in the set of servant cells, and is used to indicate a state for each secondary cell. In another possible project, the first indication information can include some secondary cells in the set of servant cells, and is used to indicate a state for each of some secondary cells. In another possible project, the first indication information may include some secondary cells in the set of servant cells, and some secondary cells are determined by the first network node or the second network node and are defined for the active state or the state inactive.
[0010] [0010] Therefore, in this modality of this request, the second network node generates the first configuration information in the first protocol layer, and indicates, using the first network node, the first configuration information including the set of servant cells for the terminal device; and the first network node generates the first indication information in the second protocol layer, and sends the first indication information to notify the terminal device of at least one first secondary cell that is defined for an active / inactive state, so that the terminal device updates a state of at least a first secondary cell after receiving the first indication information, in order to carry out data transmission using an active secondary cell. Therefore, carrier aggregation is configured for the terminal device in a new network architecture, and this helps to increase the transmission bandwidth of the terminal device.
[0011] [0011] In this embodiment of this request, at least one first secondary cell in the set of servant cells can be determined by the first network node or the second network node.
[0012] [0012] If the second network node determines the status of at least one first secondary cell, optionally, the method also includes: receiving, by the first network node, second indication information sent by the second network node, where the second information Indicator includes at least one first secondary cell, or includes at least one first secondary cell and the status of at least one first secondary cell.
[0013] [0013] In other words, after determining at least one first secondary cell, the second network node sends the second indication information to notify the first network node of at least one first secondary cell, and the first network node generates the first indication information based on the second indication information, to notify the terminal device of the active / inactive state of at least one first secondary cell.
[0014] [0014] If the first network node determines the status of at least one first secondary cell, optionally, the method also includes: determining, by the first network node, the status of at least one first secondary cell in the set of servant cells with based on a measurement result, where the measurement result includes at least one of the following: a first measurement result from the first protocol layer of the terminal device; a second measurement result from a third protocol layer of the terminal device; and a third measurement result of an uplink channel that is obtained through measurement by the first node of the network, based on a signal sent by the terminal device.
[0015] [0015] The first node of the network determines the status of at least one first secondary cell in the set of servant cells, so that the first indication information can be generated directly based on a result of the determination. This is relatively simple and convenient.
[0016] [0016] Determining the status of at least one first secondary cell based on the measurement result is a possible implementation. However, it should be understood that, this is only a possible implementation provided in this application, and should not constitute any limitation to this application.
[0017] [0017] It should also be understood that the measurement results illustrated above are merely used for exemplary description, and should not constitute any limitation to this application.
[0018] [0018] In this order, different protocol layers can be deployed separately on the first network node and on the second network node. In a possible implementation, at least the first protocol layer is deployed on the second network node, and at least the second protocol layer and the third protocol layer are deployed on the first network node.
[0019] [0019] For example, the first protocol layer can be a radio resource control layer (RRC), the second protocol layer can be a media access control layer, MAC ), and the third protocol layer can be a physical layer (physical, PHY).
[0020] [0020] It should be understood that the first protocol layer, the second protocol layer, and the third protocol layer illustrated above are merely used for exemplary description, and should not constitute any limitation to this request. The first protocol layer and the second protocol layer can alternatively be other protocol layers defined in an existing protocol (for example, an LTE protocol) or a future protocol. This is not specifically limited in this application.
[0021] [0021] Optionally, when the first node in the network receives a first measurement report of the first protocol layer of the terminal device, the first measurement result can be obtained by performing the following steps: send, through the first node in the network to the second node in the network, the first measurement report reported by the terminal device; generate, by the second node in the network, the first measurement result based on the first measurement report; and receiving, by the first network node, the first measurement result sent by the second network node.
[0022] [0022] The first network node can determine the status of at least one first secondary cell based on at least one of the aforementioned measurement results, so that the accuracy of the determination can be improved.
[0023] [0023] In addition, optionally, the first indication information is generated by the first network node in the second protocol layer.
[0024] [0024] For example, the first indication information can be carried in a MAC control element (control element, CE).
[0025] [0025] Therefore, the first network node sends the first indication information to the terminal device using a MAC layer message, to indicate an active / inactive state of a secondary cell. This can improve the real-time performance of configuration validation.
[0026] [0026] In this embodiment of the present invention, the set of servant cells can be determined by the first network node or the second network node.
[0027] [0027] If the set of servant cells is determined by the second network node, optionally, the method also includes: receiving, by the first network node, the second configuration information from the second network node, where the second configuration information includes secondary cell identity information and a secondary cell index of the set of servant cells, configured by the second network node for the terminal device.
[0028] [0028] Optionally, the second configuration information also indicates the state of the secondary cell, where the state of the secondary cell is the active state or the inactive state.
[0029] [0029] If the set of servant cells is determined by the first network node, optionally, the method also includes: sending, by the first network node, third configuration information to the second network node, where the third configuration information is used to indicate, for the second network device, the set of servant cells, configured for the terminal device, the third configuration information also indicating the status of the secondary cell, and the status of the secondary cell is the active state or the inactive state .
[0030] [0030] Optionally, the method also includes: determining, by the first network node, the set of servant cells based on the measurement result.
[0031] [0031] The specific content of the measurement result has been described in detail in the aforementioned description. To avoid repetition, the details are not described in this document again.
[0032] [0032] Optionally, the method also includes: sending, through the first network node, third indication information to the second network node, where the third indication information is used to notify the second network node of at least one first cell secondary and the status of at least one first secondary cell that is in the first indication information.
[0033] [0033] In other words, after determining the status of at least one first secondary cell for the terminal device, the first network node can notify the second network node of the status of at least one first secondary cell, so that the second node Maintain an active / inactive state of at least one first secondary cell of the terminal device.
[0034] [0034] Optionally, the second configuration information and the second indication information are carried in the same message.
[0035] [0035] Optionally, the second configuration information, the second indication information, and the third indication information are all generated by the second network node based on a protocol supported by the first communications interface.
[0036] [0036] In this order, the first communications interface can be a Fl interface, all the information illustrated above can be carried in a Fl interface control plan message (denoted as FICP), and also, the control plan message interface interface is a FIAP message; or it can be carried in a FL interface user plan message (denoted as F1UP).
[0037] [0037] Optionally, the FL interface control plan message is carried on an SCTP transport layer protocol, and the FL interface user plan message is carried on a GTP-U transport layer protocol.
[0038] [0038] In this request, the second network node can indicate the servant cell defined for the terminal device, using an RRC message. A one-to-one mapping relationship between the secondary cell identity information, a secondary cell index and the secondary cell frequency information is recorded in the first configuration information carried in the RRC message, so that the terminal device stores the one-to-one mapping relationship. The first network node can indicate the status of at least one first secondary cell in the servant cell defined for the terminal device using MAC CE. The first indication information carried in MAC CE carries a secondary cell index and secondary cell status information, so that the terminal device finds a corresponding secondary cell at a corresponding frequency based on the pre-one-to-one mapping ratio -stored between secondary cell identity information, a secondary cell index, and secondary cell frequency information. The second network node notifies the one-to-one mapping relationship between the secondary cell identity information, a secondary cell index, and secondary cell frequency information in advance using the RRC message, and then the first node The network indicator indicates, in the MAC CE using the secondary cell index, a secondary cell that is set to the active state, so that the overloads of the first indication information in the MAC CE can be reduced. In addition, the terminal device is notified of the status of at least one first secondary cell using MAC CE, and this can improve the real-time performance of configuration validation. In other words, a secondary cell can be configured for the terminal device in real time, based on a current network state. Therefore, the transmission bandwidth of the terminal device can be further improved.
[0039] [0039] According to a second aspect, a method of communication is provided. The method is applied to a radio access network system, including a first network node and a second network node, and the first network node communicates with the second network node through a first communication interface. The method includes: sending, through the second network node, the first configuration information to the first network node, where the first configuration information includes a set of servant cells configured for a terminal device, the set of servant cells includes at least one secondary cell, the first configuration information indicating a secondary cell state, the secondary cell state is an active state or an inactive state, and the first configuration information is generated by the second network node in a first protocol layer; and sending, through the second network node, second configuration information to the first network node, where the second configuration information includes secondary cell identity information and a secondary cell index of the set of servant cells, configured by the second network node. network to the terminal device. At least one first secondary cell included in the first indication information can be a subset of the set of servant cells in the first configuration information, or it can be all of the secondary cells in the set of servant cells. This is not specifically limited in this application.
[0040] [0040] In a possible project, the first indication information can include all secondary cells in the set of servant cells, and is used to indicate a status of each secondary cell. In another possible project, the first indication information may include some secondary cells in the set of servant cells, and is used to indicate a state for each of the secondary cells. In yet another possible design, the first indication information may include some secondary cells in the set of servant cells, and some secondary cells are determined by the first network node or the second network node and are defined for the active state or the state inactive.
[0041] [0041] Therefore, in this modality of this request, the second network node generates the first configuration information in the first protocol layer, and indicates, using the first network node, the first configuration information including the set of servant cells for the terminal device; and the first network node generates the first indication information in a second protocol layer, and sends the first indication information to notify the terminal device of at least one first secondary cell that is set to an active / inactive state, so that the terminal device updates a state of at least a first secondary cell after receiving the first indication information, in order to transmit data using an active secondary cell. Therefore, carrier aggregation is configured for the terminal device in a new network architecture, and this helps to increase the transmission bandwidth of the terminal device. In this embodiment of this application, at least a first secondary cell in the set of servant cells can be determined by the first network node or the second network node.
[0042] [0042] Optionally, the second configuration information also indicates the state of the secondary cell, where the state of the secondary cell is the active state or the inactive state.
[0043] [0043] In this mode, the second network node determines the status of at least one first secondary cell. Optionally, the method also includes: determining, by the second network node, the status of at least one first secondary cell in the set of servant cells, based on a measurement result.
[0044] [0044] Optionally, the measurement result includes at least one of the following options: a first measurement result of the first protocol layer of the terminal device; a second measurement result from a third protocol layer of the terminal device; and a third measurement result of an uplink channel that is reported by the first network node and which is obtained through measurement based on a signal sent by the terminal device.
[0045] [0045] Determining the status of at least one first secondary cell based on the measurement result is a possible implementation. However, it should be understood that, this is only a possible implementation provided in this application, and should not constitute any limitation to this application.
[0046] [0046] It should also be understood that the measurement results illustrated above are merely used as an example description, and should not constitute any limitation to this request.
[0047] [0047] In this order, different protocol layers can be deployed separately on the first network node and the second network node. In a possible implementation, at least the first protocol layer is deployed on the second network node, and at least the second protocol layer and the third protocol layer are deployed on the first network node.
[0048] [0048] For example, the first protocol layer can be a radio resource control layer (RRC), the second protocol layer can be a media access control layer, MAC ), and the third protocol layer can be a physical layer (physical, PHY).
[0049] [0049] It should be understood that the first protocol layer, the second protocol layer, and the third protocol layer illustrated above are merely used for exemplary description, and should not constitute any limitation to this request. The first protocol layer and the second protocol layer can alternatively be other protocol layers defined in an existing protocol (for example, an LTE protocol) or in a future protocol. This is not specifically limited in this application.
[0050] [0050] Optionally, the second network node can obtain the second measurement result from the third protocol layer of the terminal device by performing the following step: receiving, by the second network node, the second measurement result sent by the first network node, where the second measurement result is determined by the first network node based on a measurement report, of the third protocol layer, reported by the terminal device.
[0051] [0051] The second network node can determine, based on at least one of the aforementioned measurement results, a secondary cell that is defined for the active state, so that the accuracy of the determination can be improved.
[0052] [0052] In this embodiment of the present invention, the set of servant cells can be determined by the first network node or the second network node.
[0053] [0053] If the set of servant cells is determined by the second network node, optionally, the method also includes: sending, by the second network node, the second configuration information to the first network node, where the first network node learns, using the second configuration information, from the set of servant cells, configured by the second network node to the terminal device, where the second configuration information also indicates the status of the secondary cell, and the status of the secondary cell is the active state or the inactive state.
[0054] [0054] Optionally, the method also includes: determining, by the second network node, the set of servant cells based on the measurement result.
[0055] [0055] The specific content of the measurement result has been described in detail in the aforementioned description. To avoid repetition, the details are not described in this document again.
[0056] [0056] If the set of servant cells is determined by the first network node, the method optionally also includes: receiving, by the second network node, third configuration information sent by the first network node, where the third configuration information is used to indicate, for the second network node, the set of servant cells, configured for the terminal device, the third configuration information also indicating the status of the secondary cell, and the status of the secondary cell is the active state or the inactive state .
[0057] [0057] Optionally, the method also includes: receiving, by the second network node, third indication information sent by the first network node, where the third indication information is used to notify the second network node of at least one first cell secondary and the status of at least one first secondary cell that is in the first indication information.
[0058] [0058] In other words, after notifying the terminal device about the status of at least a first secondary cell, the first network node can notify the second network node about the status of at least a first secondary cell, so that the second network node maintain an active / inactive state of the secondary cell of the terminal device.
[0059] [0059] Optionally, the second configuration information and the second indication information are carried in the same message.
[0060] [0060] Optionally, the second configuration information, the second indication information, and the third indication information are all generated by CU based on a protocol supported by the first communications interface.
[0061] [0061] In this order, the first communications interface can be a Fl interface, all the information illustrated above can be carried in a Fl interface control plan message (denoted as FICP), and also, the control plan message interface interface is a FIAP message; or it can be carried in a FL interface user plan message (denoted as F1UP).
[0062] [0062] Optionally, the control plane message from the Fl interface is carried on a transport layer protocol of the SCTP, and the user plan message from the Fl interface is carried on a transport layer protocol of the GTP-U.
[0063] [0063] In this request, the second network node can indicate the set of servant cells for the terminal device, using an RRC message. A one-to-one mapping relationship between the secondary cell identity information, a secondary cell index, and secondary cell frequency information is recorded in the first configuration information carried in the RRC message, so that the terminal device stores the one-to-one mapping relationship. The first network node can indicate the status of at least one first secondary cell in the set of cells serving the terminal device using a MAC CE. The first indication information carried in MAC CE carries a secondary cell index, so that the terminal device finds a corresponding secondary cell at a corresponding frequency based on the pre-stored one-to-one mapping relationship between the identity information secondary cell index, secondary cell index, and secondary cell frequency information. The second network node notifies the one-to-one mapping relationship between the secondary cell identity information, a secondary cell index, and secondary cell frequency information in advance using the RRC message, and then the first node The network indicator indicates, in the MAC CE using the secondary cell index, a secondary cell that is defined for the active state, so that an overload of the first indication information in the MAC CE can be reduced. On the other hand, the terminal device is notified of the status of at least one first secondary cell using MAC CE, and this can improve the real-time performance of configuration validation. In other words, a secondary cell can be configured for the terminal device in real time based on the current state of the network. Therefore, the transmission bandwidth of the terminal device can be further improved.
[0064] [0064] According to a third aspect, a network node is provided. The network node includes a receiving module and a sending module, to carry out the communication method in either the first aspect or the possible implementations of the first aspect. The sending module is configured to perform a function related to transmission, and the receiving module is configured to perform a function related to receiving.
[0065] [0065] According to a fourth aspect, a network node is provided. The network node includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to receive and send a signal. The memory is configured to store a computer program. The processor is configured to invoke the computer program from memory and run the computer program, so that the network node performs the method on either the first aspect or the possible implementations of the first aspect.
[0066] [0066] In a project, the network node is a communications chip, the receiving unit can be an input circuit or communications chip interface, and the sending unit can be an output circuit or communication chip interface. communications.
[0067] [0067] According to a fifth aspect, a network node is provided. The network node includes a receiving module and a sending module, to carry out the method of communication in either of the second aspect or the possible implementations of the second aspect. The sending module is configured to perform a function related to transmission, and the receiving module is configured to perform a function related to receiving.
[0068] [0068] According to a sixth aspect, a network node is provided. The network node includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to receive and send a signal. The memory is configured to store a computer program. The processor is configured to invoke the computer program from memory and run the computer program, so that the network node performs the method on either the second aspect or the possible implementations of the second aspect.
[0069] [0069] In a project, the network node is a communications chip, the receiving unit can be an input circuit or communications chip interface, and the sending unit can be an output circuit or communication chip interface. communications.
[0070] [0070] According to a seventh aspect, a radio access network system is provided, including the network node in the third or fourth aspect, and the network node in the fifth or sixth aspect.
[0071] [0071] According to an eighth aspect, a computer program product is provided. The computer program product includes computer program code. When the computer program code is executed by a network node, the network node performs the method on either the first aspect or the possible implementations of the first aspect.
[0072] [0072] According to a ninth aspect, a computer program product is provided. The computer program product includes the computer program code. When the computer program code is executed by a network node, the network node executes the method in either the second aspect or the possible implementations of the second aspect.
[0073] [0073] According to a tenth aspect, a computer-readable medium is provided. The computer-readable medium stores the program code, and the program code includes an instruction used to perform the method on either the first aspect or the possible implementations of the first aspect.
[0074] [0074] According to an eleventh aspect, a computer-readable medium is provided. The computer-readable medium stores the program code. The program code includes an instruction used to perform the method on any of the second aspect or possible implementations of the second aspect.
[0075] [0075] In some possible implementations, at least the first protocol layer is deployed on the second network node, and at least the second protocol layer and the third protocol layer are deployed on the first network node. The first layer of protocol can be at least used for the administration of radio resources, the second layer of protocol can be at least used to control and manage the transmission of data in a medium, and the third layer of protocol can be used by least to provide a physical resource for data transmission.
[0076] [0076] In some possible implementations, an RRC layer and a PDCP layer are deployed on the second network node, and an RLC layer, a MAC layer, and a PHY layer are deployed on the first network node.
[0077] [0077] It should be understood that the protocol layers illustrated above, which are deployed for the first network node and the second network node, are used for the exemplary description, and should not constitute any limitation to this request. This request does not exclude the possibility of defining another protocol layer in a future protocol to replace a protocol layer in an existing protocol (for example, an LTE protocol) to implement the same or similar function.
[0078] [0078] It should be understood that a protocol stack structure illustrated above for the first network node and the second network node is merely used as an example description, and should not constitute any limitation to this request. This request does not exclude the possibility of defining another protocol layer in a future protocol to replace a protocol layer in an existing protocol (for example, an LTE protocol) to implement the same or similar function. In addition, this order also does not exclude the possibility of defining more or less protocol layers in a future protocol to replace a protocol layer in an existing protocol.
[0079] [0079] In some possible implementations, the measurement report includes at least one of the following: a reference signal receiving power
[0080] [0080] Optionally, the measurement report can be based on a cell (cell) or a beam (beam).
[0081] [0081] In some possible implementations, the second configuration information indicates a set of candidate secondary cells.
[0082] [0082] As an example and without limitations, the second configuration information includes at least one of the following: terminal device identity information, primary cell identity information, secondary cell identity information, an index of secondary cell and frequency information of the secondary cell.
[0083] [0083] As an example and without limitations, the identity information of the terminal device includes a C-RNTI or a UE ID; the primary cell identity information includes a global radio access network cell identity or a physical cell identifier (PCI); and the secondary cell identity information includes at least one of a global radio access network cell identity or a PCI.
[0084] [0084] In some possible implementations, the second configuration information also includes configuration information related to the protocol stack.
[0085] [0085] In some possible implementations, the first configuration information indicates the set of candidate secondary cells.
[0086] [0086] As an example and without limitations, the first configuration information includes at least one of the following: the secondary-cell identity information, the secondary-cell index, and the secondary-cell frequency information. The secondary cell identity information includes at least one of a global radio access network cell identity or a PCI.
[0087] [0087] According to this request, the second network node generates the first configuration information in the first protocol layer, and the first network node sends the first configuration information including the set of servant cells to the terminal device; and the first network node sends the first indication information in the second protocol layer to notify the terminal device of at least one first secondary cell that is defined for the active / inactive state, so that the carrier aggregation is configured for the terminal device. Therefore, carrier aggregation can be implemented for the terminal device in a new network architecture, and this helps to provide the terminal device with a higher transmission bandwidth. BRIEF DESCRIPTIONS OF THE DRAWINGS
[0088] [0088] Figure 1 is a schematic diagram of an LTE protocol stack structure; Figure 2 is a schematic diagram of a communications system applicable to a method of communication in one embodiment of this application; Figure 3A and Figure 3B are a schematic diagram of the division of a protocol stack structure; Figure 4 is a schematic diagram of a possible protocol stack structure for a network device according to this application; Figure 5 is a schematic flow chart of a communication method according to an embodiment of this request; Figure 6 is a schematic flow chart of a method of communication according to another embodiment of this application; Figure 7 is a schematic flowchart of a communication method in accordance with yet another embodiment of this application; Figure 8 is a schematic block diagram of a network node according to an embodiment of this application; Figure 9 is another schematic block diagram of a network node, according to an embodiment of this application; Figure 10 is a schematic block diagram of a network node according to an embodiment of this application; Figure 11 is another schematic block diagram of a network node according to an embodiment of this application; and Figure 12 is a schematic block diagram of a radio access network system according to one embodiment of this application. DESCRIPTION OF THE MODALITIES
[0089] [0089] The following describes the technical solutions for this application with reference to the attached drawings.
[0090] [0090] To facilitate the understanding of this request, a LTE protocol stack structure is first described briefly with reference to Figure 1. Figure 1 is a schematic diagram of a protocol stack structure in the LTE system. As shown in the figure, the current protocol stack structure in LTE can include five protocol layers: an RRC layer, a PDCP layer, an RLC layer, a MAC layer, and a top-down PHY layer. The signaling generated in any layer (for example, denoted as a layer of protocol A, and it can be understood that, layer of protocol A can be any of: the RRC layer, the PDCP layer, the RLC layer, the MAC layer , and the PHY layer) of a transmitting end device needs to be processed by a lower protocol layer, and is finally sent to a receiving end device via a physical channel. As shown by a curved line in the figure, correspondingly, the signaling received by the receiving end device through the physical channel also needs to be processed by the PHY layer and protocol layers above the PHY layer, and information in the signaling can be obtained from the end of the receive only after signaling reaches protocol layer A.
[0091] [0091] However, the division of protocol layer in a 5G network is still under discussion, and the protocol stack shown in Figure 1 can be optimized. For example, a plurality of protocol layers are combined, or a new protocol layer is added. In addition, the functions of a base station on an original access network are divided. Therefore, an existing carrier aggregation configuration method cannot be used continuously to configure a secondary cell for a terminal device.
[0092] [0092] In view of this, this request provides a method of communication, to configure carrier aggregation for a terminal device based on a new network architecture in 5G.
[0093] [0093] In order to facilitate the understanding of the communication method of this request, the following describes, in detail with reference to Figure 2, a communication system applicable to the communication method in this modality of this request. Figure 2 is a schematic diagram of a communications system 200 applicable to the communication method in this embodiment of this application.
[0094] [0094] As - shown in Figure 2, the communications system 200 includes an access network system 210 and terminal devices 220. In a 5G system, a CU-DU architecture can be used for the access network system 210. Specifically, the access network system 210 may include at least one CU 211 and at least one DU 212, and at least one DU 212 may be connected to a CU 211. A communications interface (may be denoted as a first communication interface) communications for ease of differentiation and description) is configured between the CU 211 and DU 212. The CU 211 can communicate with the DU 212 through the first communications interface. DU 212 can communicate with terminal device 220 via an overhead interface.
[0095] [0095] CUs can be deployed centrally and, depending on an actual network environment, can be deployed in a central urban area with relatively high traffic density, a relatively small distance between sites (inter-site), and resources limited number of equipment rooms, for example, on a university campus and a large venue for presentations. DUs can also be deployed centrally. However, in an area with relatively low traffic density and a relatively large distance between locations, for example, in a suburban county and a mountainous area, DUs can be deployed in a distributed manner. This is not specifically limited in this application.
[0096] [0096] Functions of the access network system 210 in Figure 2 can be similar to those of a base station in the LTE system. Specifically, some functions of the base station in the LTE system can be implemented in the CU 211, and the remaining functions can be implemented in the DU 212. However, functions of the CU 211 and DU 212 are not limited to the functions of the base station in the LTE system. . As the 5G network evolves, the base station's functions may vary. For example, other network functions are added, or some existing functions are improved, or even some unnecessary functions can be removed. This is not specifically limited in this application.
[0097] [0097] It should be understood that the division of functions illustrated above for CU and DU is merely used as an example description, and should not constitute any limitation to this request. For example, alternatively, CU can include some functions of a top layer protocol stack of a radio access network system and some functions of a central network, and DU can include some functions of the PHY layer and the MAC layer .
[0098] [0098] It should be better understood that Figure 2 is merely a simplified schematic diagram and used as an example to facilitate understanding. The communications system 200 may also include other network devices and / or terminal devices that are not shown in Figure 2. Referring to the structure of the protocol stack shown in Figure 1 again, CU can be configured to take over centralized administration and control of radio resources and connections, or more specifically, configured to process functions of an upper layer radio protocol stack, such as the RRC layer or the PDCP layer. DU can be configured mainly to process a function of the PHY layer and a function with a relatively high requirement in real time, or more specifically, configured to process functions of a lower layer protocol stack, such as the RLC layer, the MAC layer , and the PHY layer.
[0099] [0099] With reference to the protocol stack structure in Figure 1, the protocol layers can be divided.
[0100] [0100] Figure 3A and Figure 3B are a schematic diagram of the division of a protocol stack structure. As shown in Figure 3A and Figure 3B, the protocol layers of the CU-DU architecture can include: an RRC layer, a PDCP layer, an upper layer part of the RLC layer, a lower layer part of the RLC layer, a part of upper layer of the MAC layer, lower part of the MAC layer, upper part of the PHY layer, and lower part of the PHY layer. An RLC layer, a MAC layer, and a PHY layer are divided separately. A function with a low real-time requirement in a protocol layer is placed in a part of the upper layer of the protocol layer, and a function with a high real-time requirement in the protocol layer is placed in a part of the lower layer of the protocol. protocol layer.
[0101] [0101] CU-DU functions can be divided into a plurality of modes. For example, the following seven split modes can be included.
[0102] [0102] Division mode 1: The division is made between the RRC layer and the PDCP layer. To be specific, the RRC layer is implanted in the CU, and the PDCP layer and the protocol layers below the PDCP layer are implanted in the DU.
[0103] [0103] Division mode 2: The division is carried out between the PDCP layer and the RLC layer. To be specific, the RRC layer and the PDCP layer are implanted in the CU, and the upper part of the RLC layer and the protocol layers below the upper part of the RLC layer are implanted in the DU.
[0104] [0104] Division mode 3: The RLC layer is divided into two parts. A function with a low real-time requirement is placed at the top of the RLC layer, and a function with a high real-time requirement is placed at the bottom of the RLC layer. The division is carried out between the upper part of the RLC layer and the lower part of the RLC layer. To be specific, the upper part of the RLC layer and the protocol layers above the RLC layer are implanted in the CU, and the lower part of the RLC layer and the protocol layers below the RLC layer are implanted in the DU.
[0105] [0105] Division mode 4: The division is carried out between the RLC layer and the MAC layer. To be specific, the RLC layer and the protocol layers above the RLC layer are implanted in the CU, and the MAC layers and the protocol layers below the MAC layer are implanted in the DU.
[0106] [0106] Division mode 5: The MAC layer is divided into two parts. A function with a low real-time requirement is placed at the top of the MAC layer, and a function with a high real-time requirement is placed at the bottom of the MAC layer. The division is carried out between the upper part of the MAC layer and the lower part of the MAC layer. To be specific, the upper part of the MAC layer and the protocol layers above the MAC layer are implanted in the CU, and the lower part of the MAC layer and the protocol layers below the MAC layer are implanted in the DU.
[0107] [0107] Division mode 6: The division is carried out between the MAC layer and the PHY layer. To be specific, the MAC layer and the protocol layers above the MAC layer are implanted in the CU, and the PHY layer and an RF layer are implanted in the DU.
[0108] [0108] Division mode 7: The PHY layer is divided into two parts. A function with a low real-time requirement is placed at the top of the PHY layer, and a function with a high real-time requirement is placed at the bottom of the PHY layer. The division is carried out between the upper part of the PHY layer and the lower part of the PHY layer. To be specific, the upper part of the PHY layer and the protocol layers above the PHY layer are implanted in the CU, and the lower part of the PHY layer, and the RF are implanted in the DU.
[0109] [0109] In addition, the division can be carried out between the radio frequency layers (Radio Frequency, RF) and the aforementioned protocol layers, that is, an eighth division mode can be included, and the division is carried out between the bottom of the PHY layer and the RF. To be specific, the PHY layer and the protocol layers above the PHY layer are implanted in the CU, and the RF is implanted in the DU. In other words, only one transmission antenna is implanted in the
[0110] [0110] Figure 4 is a schematic diagram of a possible protocol stack structure for a network device, according to this request. As shown in Figure 4, the possible stack structure of the protocol is as follows: An RRC layer and a PDCP layer are deployed in a CU, and an RLC layer, a MAC layer, and a PHY layer are deployed in a DU. In addition, a new protocol layer can be introduced in a future mobile communications system to perform a new function, for example, a function such as QoS administration or the convergence and identification of user data. An SDAP (Service Data Adaptation Protocol) layer is used as an example, and the new protocol layer can be deployed above the PDCP layer, and deployed in CU. It should be noted that, in the protocol stack structure, a new protocol layer can be deployed alternatively in the DU. For example, a new protocol layer is deployed above the RLC layer, or a new protocol layer is deployed between the RLC layer and the MAC layer. This is not specifically limited in this application. The new protocol layer can be a user plan protocol layer used to process data only. Alternatively, the new protocol layer can be a control plane protocol layer used to process signaling, for example, an RRC message. Alternatively, the new protocol layer is used for both a control plane and a data plane, and used to process signaling and data. This is not specifically limited in this application.
[0111] [0111] The processing of an uplink or downlink RRC message or data by CU and DU is described separately using the protocol stack structure shown in Figure 4 as an example.
[0112] [0112] For the downlink RRC message or data, CU generates the RRC message or data, and processes the RRC message or data at the PDCP layer, to obtain a PDCP protocol data unit (PDU) ( that is, a RLC service data unit (SDU)). CU transmits the PDCP PDU to the DU via a communications interface (for example, a Fl communications interface, ie an example of a first communications interface) between the CU and the DU. The DU further processes the PDCP PDU in the RLC layer, the MAC layer and the PHY layer, and finally sends a processed PDCP PDU to a radio channel via the RF for transmission.
[0113] [0113] For the uplink or data RRC message, DU receives a data packet using a radio frequency device, processes the data packet successively in the PHY layer, in the MAC layer, and in the RLC layer, and then transmits an SDU RLC (ie a PDCP PDU) for CU through a Fl interface between CU and DU. CU further processes the SDU RLC at the PDCP layer to obtain the RRC message or data, and sends the RRC message or data to the RRC layer (for the RRC message) or an application layer (for the data).
[0114] [0114] It should be noted that the communication interface Fl includes a control plane (control plane, CP) and a user plane (user plane, UP). A control layer transport layer protocol can be a stream control transmission protocol (SCTP). A transport layer protocol from the user plane is a GPRS (General Packet Radio Service) tunneling protocol to the user plane (GPRS Tunneling Protocol for the User plane, GTP-U). An upper layer signaling protocol (ie the application layer) of a transport layer can be an F1 application protocol (F1 application protocol, F1AP).
[0115] [0115] In the modalities of the following description, to facilitate the description, the modalities of this application are described in detail with reference to an example of a CU-DU protocol stack structure in Figure 4. However, it should be understood that, The protocol's stack structure is merely used as an example description, and should not be construed as limiting this request.
[0116] [0116] It should also be understood that the division of the CU and DU functions and the protocol layer structure illustrated in the aforementioned description with reference to Figure 3A, Figure 3B, and Figure 4 are merely used for example description, and should not be any limitation to this request. With the evolution of communications technologies, the protocol layer functions of the network device, the naming modes of the network device, the message content, and message names may differ from those defined in an LTE protocol. For example, an RLC layer reordering function in the LTE system can be moved to the PDCP layer. For another example, the RRC message in the LTE system can be replaced with another name. This request does not impose any limitations on the protocol layers deployed in the CU and DU, protocol layer functions, protocol layer names or protocol layer message names.
[0117] [0117] It should also be understood that the CU-DU architecture is merely used as a possible example of the new 5G network architecture in this application, and the technical solutions in this application are also applicable to a radio access network system with another network architecture. The radio access network system includes a first network node and a second network node. The first network node has at least one first protocol layer. The second network node has at least a second protocol layer, but no first protocol layer. The first protocol layer can be, for example, the RRC layer, some functions of the RRC layer, the PDCP layer, some functions of the PDCP layer, the SDAP layer, some functions of the SDAP layer, the RLC layer, some functions of the RLC layer , an adaptive layer (for example, a protocol layer with a QoS management function or a user data identification and convergence function), or some functions of the adaptive layer. The second protocol layer can be, for example, a physical layer, some functions of the physical layer, the MAC layer, some functions of the MAC layer, the RLC layer, some functions of the RLC layer, the adaptive layer, or some functions of the layer adaptive. It should also be understood that the Fl interface is just an example of the first communications interface. The first communications interface can be a wired interface or it can be a wireless interface, for example, a wireless transmission interface between a host base station and a relay station or between two relay stations.
[0118] [0118] It should also be understood that the technical solutions in this application can be applied to all types of communication systems, for example, a global mobile communications system (Global System for Mobile communications, GSM), a multiple access system code division (Code Division Multiple Access, CDMA), a broadband code division multiple access system (Wideband Code Division Multiple Access), WCDMA), a general packet radio service system (General Packet Radio Service , GPRS), a long-term evolution system (LTE), an advanced long-term evolution system (LTE-A), a universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), or a communications system next generation (for example, a 5G system). The 5G system can also be referred to as a new radio access technology (new radio access technology, NR).
[0119] [0119] In addition, the method of communication in the modalities of this application is described in this application with reference to a radio access network system and a terminal device.
[0120] [0120] The radio access network system (ie, a node (Node)) can include a device that communicates with a wireless terminal through an air interface on an access network using one or more sectors. The radio access network system can be configured to convert between a frame received over the air and an Internet Protocol (IP) packet, and serve as a router between the terminal device and the rest of the network access. The rest of the access network can include an IP network. The radio access network system can also coordinate the administration of attributes for the air interface.
[0121] [0121] It should be understood that the radio access network system in this application may include a base transceiver station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a NODE (NodeB) in a WCDMA system, or an evolved NÓóB (Node B, eNodeB, eNB, or evolved e-NodeB) in an LTE system; or it can include a relay station, an access point, a remote radio unit (Remote Radio Unit, RRU), an in-vehicle device, a wearable device, and a radio access network device (Radio Access Network, RAN) in a 5G system and a future radio communications system, for example, a base station, a gNB, a NR Node, a NR BS, a new RAN node, or a new RAN BS; or it may be a transmission point (transmission point, TP), a transmission reception point (transmission reception point, TRP), a retransmission station, or the like. This is not specifically limited in this order
[0122] [0122] It should be understood that the terminal device in this order can be referred to as user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile console, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The terminal device can be a station (ST, ST) on a wireless local area network (WLAN), it can be a cell phone, a cordless phone, a phone with session initiation protocol , SIP), a wireless remote access station (wireless local loop, WLL), a personal digital assistant device (personal digital assistant, PDA), a portable device with a wireless communication function, a computing device, other processing device connected to a wireless modem, a device integrated into a vehicle, a wearable device, a terminal device in a next generation communications system, such as a 5G network, or a terminal device in a future public mobile telecommunications network (public land mobile network, PLMN) evolved. This is not specifically limited in the embodiments of the present invention.
[0123] [0123] The aforementioned describes in detail, with reference to the accompanying drawings, the architecture of the communications system applicable to the communication method in the modalities of this application. The following describes, in detail, with reference to the accompanying drawings, the communication methods in the modalities of the present invention.
[0124] [0124] Figures 5 to Figure 7 are each a schematic flowchart of a communication method in a modality of this request from the perspective of the interaction of the device. It should be understood that the method can be applied to a radio communication system. Simply to facilitate understanding, the following describes in detail the modalities of the present invention using the communications system of the CU-DU architecture shown in Figure 2. The communications system may include a second network node
[0125] [0125] In the following modalities to be described, without loss of generality, a specific carrier aggregation configuration process for the first terminal device in the CU-DU architecture is described in detail using the first terminal device (that is, an example of the terminal device) in the communications system as an example. The first terminal device can be any one of at least one terminal device in the communication system 200 shown in Figure 2, and a DU in a primary cell (primary cell, PCell) connected to the first terminal device is the first DU (that is, an example of DU). To provide the first terminal device with a higher transmission bandwidth, the CU and the first DU configure one or more secondary cells (secondary cell, SCell) for the first terminal device, that is,
[0126] [0126] It should be understood that, the carrier aggregation is specific for the terminal device, different component carriers (CC) can be configured for different terminal devices, and each component carrier can be corresponding to an independent cell. For example, a primary cell corresponds to a primary component carrier (or referred to as a primary carrier), a secondary cell corresponds to a secondary component carrier (or referred to as a secondary carrier), and the primary cell and secondary cell constitute a set serving cell of the terminal device. In other words, the set of servant cells includes at least one primary cell and at least one secondary cell.
[0127] [0127] In this application, for easier understanding, the definitions in LTE can still be used. When carrier aggregation is configured for the terminal device, the terminal device has only one RRC connection to a network. During the establishment / reestablishment of an RRC connection or a transfer (“handover”), a servant cell that provides mobile stratum information without access (Non Access Stratum, NAS) (for example, a tracking area identifier) is a primary cell . During reestablishment of RRC connection or transfer, a servant cell that provides safety input is a primary cell. The primary cell communicates with the terminal device using an RRC message, to provide a parameter related to security and to configure a physical uplink control channel, PUCCH. The secondary cell can be added during reconfiguration of the RRC connection, and is a cell used to provide extra radio capability. Therefore, the primary cell can be determined during connection establishment, or it can be designated by a target base station using a transfer command during transfer, and the secondary cell is added, modified or deleted using an RRC connection reconfiguration message. (RRC Connection Reconfiguration) after an initial security activation process. In this scenario, the DU (denoted as the first DU for ease of differentiation and description) in the primary cell and the CU can configure carrier aggregation for the first terminal device. The following describes, in detail, with reference to Figure 5 and Figure 6, a specific process of configuring carrier aggregation for the first terminal device in this scenario.
[0128] [0128] In another possible scenario, the terminal device communicates with a plurality of base station systems using dual connectivity (dual connectivity, DC) or multiconectivity technology. After initial access or a transfer, the terminal device establishes an RRC connection for the first DU, and determines a cell administered by the first DU as a primary cell. Then, the CU or the first DU can add another DU (denoted as the second DU for ease of differentiation and description) to the terminal device as a secondary base station, and use a cell administered by the second DU as a primary secondary cell, and one or more other cells administered by the second DU as secondary cells. In this scenario, CU, DU (that is, the first DU) in the primary cell, and DU (that is, the second DU) in the primary secondary cell can configure carrier aggregation for the first terminal device together. The following describes, in detail, with reference to Figure 7, a specific process of configuring carrier aggregation for the first terminal device in this scenario.
[0129] [0129] However, it should be understood that the aforementioned definitions of primary cell, secondary cell, and primary secondary cell are merely used for exemplary description. This order does not exclude the possibility to modify the definitions of primary cell, secondary cell, and primary secondary cell in a future protocol. In addition, this request does not exclude the possibility of defining a new protocol layer in a future protocol to replace an RRC layer, to implement a function equal to or similar to that of the RRC layer in LTE.
[0130] [0130] It should also be noted that, since carrier aggregation is specific to the terminal device, a primary cell of a terminal device (for example, denoted as a t $ A terminal device) may be a secondary cell of another terminal device (for example, denoted as a dB terminal device), and a secondary cell of the dA terminal device can be a primary cell of yet another terminal device (for example, denoted as an HC terminal device). In other words, the primary cell and the secondary cell are for a specific terminal device.
[0131] [0131] In addition, a protocol stack structure deployed in CU and DU (including the first DU and the second DU) shown in Figure 5 Figure 7 can be, for example, the protocol stack structure shown in Figure 4.
[0132] [0132] It should be understood that, simply for ease of description, the modalities of this application are described using the protocol stack structure shown in Figure 4 as an example, and the protocol stack structure deployed at CU and DU is not limited to that. More illustrations and descriptions have been provided for the protocol stack structure deployed at CU and DU in the above description. The details are not described in this document again for the sake of brevity.
[0133] [0133] The following describes first, in detail, with reference to Figure 5, a communication method 500 provided in one embodiment of this order.
[0134] [0134] As shown in Figure 5, method 500 includes the following steps:
[0135] [0135] S510 A first terminal device establishes an RRC connection with a first cell in a first DU.
[0136] [0136] The first terminal device is synchronized with a cell (denoted as the first cell for ease of differentiation and description) by searching for cells, obtaining system information from the first cell, and then can initiate an initial access process. Alternatively, the first terminal device accesses the first cell in an RRC connection reestablishment process or a transfer process. It can be understood that the first cell is a primary cell of the first terminal device (it must be understood that a carrier corresponding to the primary cell is a primary carrier). The first cell system information obtained by the terminal device is the primary cell system information, and the terminal device sends a random access request and an RRC connection request to the DU (denoted as the first DU for ease of differentiation and description ) of the first cell, to request access to the first cell.
[0137] [0137] After establishing the RRC connection with the first cell, the first terminal device can obtain identities assigned separately by the first DU, the CU, and a main network device for the terminal device. As an example and without limitations, the first DU assigns a cell radio network temporary identity (C-RNTI) to the first terminal device, CU can assign a device identity (identity, ID) user equipment (UE) on a first communications interface to the first terminal device, and the primary network device can assign a temporary mobile subscriber identity (TMSI) to the first terminal device. In other words, each terminal device has different identities on different network devices, but all the identities of each terminal device on different network devices can uniquely indicate the terminal device. There is a one-to-one mapping relationship between the identities assigned by network devices to a terminal device, and each network device can store the mapping relationship, so that the other network devices determine the terminal device based on any identity of the terminal device.
[0138] [0138] It should be understood that a specific process of initial access to a network by the terminal device can be similar to an access process in an existing protocol (for example, an LTE protocol). For the sake of brevity, the detailed description of the specific process is omitted in this document.
[0139] [0139] For the initial access process, after establishing the RRC connection with the first cell, the first terminal device can complete registration and authentication on a main network, and activate the security of the main network and an air interface.
[0140] [0140] S520. CU configures a first set of servant cells for the first terminal device, and sends the configuration information (denoted as second configuration information for ease of differentiation and description) from the first set of servant cells to the first DU.
[0141] [0141] Specifically, after the first terminal device establishes the RRC connection with the first cell in the first DU, CU can configure the first set of servant cells for the first terminal device.
[0142] [0142] One can learn from the aforementioned description that, without considering dual connectivity or multiconectivity, the aggregation of carriers can be the aggregation of intra-site carriers and the aggregation of cross-site carriers. If carrier aggregation is intra-site carrier aggregation, the first set of servant cells can include cells that are in cells administered by the first DU and that can be configured as secondary cells of the first terminal device; or if the carrier aggregation is cross-site (or referred to as inter-site) carrier aggregation, the first set of servant cells can include cells that are in cells administered by the first DU and another DU (for example, a third DU) and that can be configured as secondary cells of the first terminal device.
[0143] [0143] It should be understood that, simply for ease of differentiation and description, it is assumed in this document that the DU corresponding to the secondary cells in the first set of servant cells includes the first DU and the third DU. In fact, there may be more DUs corresponding to the secondary cells in the first set of servant cells. This is not specifically limited in this application.
[0144] [0144] In this modality of this request, CU can configure the first set of servant cells for the first terminal device using at least one of the following methods:
[0145] [0145] Method 1: CU configures the first set of servant cells for the first terminal device based on a measurement result.
[0146] [0146] Method 2: CU blindly configures the first set of servant cells for the first terminal device.
[0147] [0147] Specifically, in Method 1, the measurement result can include at least one of the following: a first measurement result from a first protocol layer of the first terminal device; a second measurement result from a third protocol layer from the first terminal device; and a third result of measuring an uplink channel that is reported by the first DU and which is obtained by measuring based on a signal from the first terminal device.
[0148] [0148] The first protocol layer is a protocol layer above the second protocol layer. In this embodiment of this request, by way of example and without limitation, the first protocol layer may be an RRC layer or a protocol layer that has a similar function of radio resource management. The third protocol layer can be a PHY layer or a protocol layer that has the similar function of providing a physical resource for transmitting data.
[0149] [0149] In the measurement results illustrated above, oThe first measurement result and the second measurement result are measurement results from a downlink channel, and the measurement results can be measurement reports generated by the first terminal device, or they can be measurement results obtained through processing by the first DU. Specifically, downlink channel measurement results include an RRC layer measurement result (or referred to as a radio resource management measurement result (RRM), or a layer 3 measurement result) and a PHY layer measurement result (or referred to as a layer 1 measurement result).
[0150] [0150] It can be understood that when an RRC layer and a PDCP layer are implanted in the CU, and an RLC layer, a MAC layer and a PHY layer are implanted in the DU, CU can obtain the measurement results of different layers protocol from the first terminal device in different ways.
[0151] [0151] For a measurement report of the RRC layer of the first terminal device, the measurement report of the RRC layer can be carried in an RRC message and therefore the measurement report of the RRC layer can be forwarded directly to CU for the first time DU, and CU can analyze the first measurement result in the RRC layer based on the measurement report.
[0152] [0152] For a PHY layer measurement report from the first terminal device, the PHY layer measurement report can be carried in a PHY layer message or in a MAC layer message, and therefore the first DU can analyze the second measurement result when receiving the PHY layer measurement report. Then, the first DU sends the second measurement result to CU via the first communications interface.
[0153] [0153] It should be noted here that if the measurement result based on which CU configures the first set of servant cells for the first terminal device includes the second measurement result from the third protocol layer of the first terminal device, a signal measurement (for example, a downlink reference signal) needs to be configured to be transmitted on carriers corresponding to the secondary cells of the first set of servant cells. In this way, the EU receives the measurement signal, to accurately obtain second measurement results from the third protocol layer that are obtained through measurement by the first terminal device for the secondary cells in the first set of servant cells.
[0154] [0154] As an example and without limitations, the measurement report of the first terminal device can include at least one of the following: a reference signal received power (RSRP), a signal reception quality reference signal received quality, RSRQ, a signal-to-noise ratio, SNR, a signal-to-noise ratio plus noise
[0155] [0155] The measurement report illustrated above can be based on a cell or beam. If the measurement report is based on a cell, the measurement report carries a cell identity (cell ID), or if the measurement report is based on a beam, the measurement report carries a beam identifier (beam ID) .
[0156] [0156] The third measurement result is a measurement result of the uplink channel. The uplink channel measurement result can be obtained by the first DU by monitoring the uplink channel. Specifically, a measurement report can be generated based on a sounding reference signal (SRS) or a channel state information reference signal, CSI-RS sent by the first device terminal, and is sent to CU through the first communications interface.
[0157] [0157] It should be noted that the measurement result sent by the first DU to CU via the first communications interface can be carried in a FL interface control plan message or in a FL interface user plan message.
[0158] [0158] As an example and without limitations, the uplink channel measurement report can include at least one of the following:
[0159] [0159] It should be understood that the specific content of the measurement report illustrated above is merely used as an example description, and should not constitute any limitation to this request. The measurement report can include one or more pieces of content, or it can include content other than the one illustrated above. This is not specifically limited in this application.
[0160] [0160] In Method 2, CU can determine the first set of servant cells for the first terminal device, using a blind configuration method. For the method, refer to a specific process in the prior art in which a base station blindly configures a first set of servant cells for a first terminal device. For the sake of brevity, the detailed description of the specific process is omitted in this document.
[0161] [0161] It should be understood that CU can alternatively determine the first set of servant cells for the first terminal device based on other information, for example, based on the historical information reported by the first terminal device. This is not specifically limited in this application.
[0162] [0162] Optionally, the second configuration information can be generated by CU based on a protocol supported by a first communications interface (for example, a Fl interface). For example, the second configuration information can be carried in a FL interface control plan message (denoted as FI1CP) and, in addition, the FL interface control plan message is an F1AP message. Alternatively, the second configuration information can be carried in an F1 user interface plan message (denoted as an F1UP) Optionally, the F1 interface control plan message is carried in an SCTP transport layer protocol, and the FL interface user plan message is carried on a GTP-U transport layer protocol.
[0163] [0163] The first DU can receive the second configuration information through the first communications interface. For example, the first DU obtains the second configuration information based on a FI1AP.
[0164] [0164] The second configuration information includes at least one of the following: terminal device identity information, primary cell identity information, secondary cell identity information, a secondary cell index, and secondary cell frequency information.
[0165] [0165] As an example and without limitations, the identity information of the terminal device includes at least one of a C-RNTI and an EU ID.
[0166] [0166] By way of example and without limitations, the primary cell identity information includes at least one of a global radio access network cell identity and a physical cell identifier (PCI).
[0167] [0167] By way of example and without limitations, the secondary cell identity information includes at least one of a global radio access network cell identity and a PCI.
[0168] [0168] Optionally, the second configuration information also indicates a secondary cell status.
[0169] [0169] The secondary cell state is either an active state or an inactive state.
[0170] [0170] Specifically, the second configuration information can include an identity of each secondary cell and a status of the secondary cell, that is, the status of each secondary cell is explicitly indicated. Alternatively, it can be defined in a protocol that the second configuration information includes only a secondary cell in the active state or a secondary cell in the inactive state. Correspondingly, the second configuration information can include only the secondary cell in the active state or the secondary cell in the inactive state, that is, the status of each secondary cell is indicated implicitly.
[0171] [0171] In this embodiment of this request, the second configuration information can be used to indicate the first set of servant cells, configured by CU for the first terminal device, and the first set of servant cells includes at least one secondary cell. Optionally, the second configuration information can include a secondary cell list (Scell list), and a one-to-one mapping relationship between secondary cell identity information, a secondary cell index and the Secondary cell frequency information is recorded in the list of secondary cells.
[0172] [0172] Optionally, the second configuration information may also include configuration information related to the protocol stack.
[0173] [0173] As an example and not a limitation, the configuration information related to the protocol stack can include: Information related to the configuration of the RLC layer, such as information related to the configuration of temporary storage (temporary storage); information related to the configuration of the MAC layer, for example, including information related to the configuration of a hybrid automatic repeat request, HARQ and information related to the size configuration (BSR-Size ) a temporary storage status report (state storage, BSR); and information related to the configuration of the PHY layer, for example, indicating whether inter-carrier programming can be configured, and information related to inter-carrier programming configuration.
[0174] [0174] It should be understood that the illustration mentioned above is merely used as an example description, and should not constitute any limitation to this request. For configuration information related to the protocol stack, refer to the state of the art information used for the protocol stack configuration. For brevity, examples are not provided one by one in this document.
[0175] [0175] It should be noted that, in the case of aggregation of carriers between locations, a secondary cell configured by CU for the first terminal device may not belong to the first DU. In this case, the CU can simultaneously send the second configuration information to a DU (for example, the third DU) of the secondary cell,
[0176] [0176] Optionally, the first DU and the third DU perform the configuration related to the protocol layer for the secondary cells in the first set of servant cells based on the information from the second configuration.
[0177] [0177] The specific content of the configuration information related to the protocol stack included in the second configuration information was illustrated in the aforementioned description. After receiving the second configuration information, each DU can perform the configuration based on the configuration information related to the protocol stack included in the second configuration information. Specifically, each protocol layer (for example, including the RLC layer, the MAC layer and the PHY layer) can update a configuration parameter or establish a corresponding entity for a component carrier allocated to the first terminal device. For example, larger temporary storage can be allocated in the RLC layer, a plurality of HARQ entities are allocated to each secondary cell in the MAC layer, and physical channel configuration information is allocated to each secondary cell in the PHY layer, for example, if it is determined that scheduling between carriers needs to be enabled. In a case of programming between carriers, the programming information of physical resources from another cell is transported in a PDCCH, in order to carry out the transmission of data from the physical channel.
[0178] [0178] It should be understood that a specific process and method in which each DU performs a configuration related to the protocol layer for a corresponding secondary cell can be the same as a specific process and method in the state of the aforementioned technique in which a station base performs a configuration related to the protocol layer for each secondary cell. The details are not described here for brevity.
[0179] [0179] Optionally, the S520 can alternatively be as follows: The first DU configures a first set of servant cells for the first terminal device, and sends the configuration information (denoted as the third configuration information for ease of differentiation and description) of the first set of cells serving for CU. Specifically, the first set of servant cells can be configured for the first terminal device, using the following two methods:
[0180] [0180] Method 1: The first DU determines a secondary cell in a list of secondary cells and sends the secondary cell identity information to CU, and CU assigns a secondary cell index to the corresponding secondary cell and sends the cell index secondary for the first DU.
[0181] [0181] Method 2: The first DU determines a secondary cell in a list of secondary cells, assigns a corresponding secondary cell index and sends secondary cell identity information and the secondary cell index to the CU.
[0182] [0182] Specifically, corresponding to Method 1, the third configuration information can include at least the secondary cell identity information. Optionally, the third configuration information can also include at least one of the secondary cell frequency information and secondary cell status information. After receiving the information from the third configuration, CU sends a first confirmation message to DU, and the first confirmation message includes at least the secondary cell index. Optionally, the first confirmation message can also include at least one of the following elements: the secondary cell identity information, the secondary cell frequency information and the secondary cell status information.
[0183] [0183] Specifically, corresponding to Method 2, the third configuration information can include at least: the secondary cell identity information and the secondary cell index. Optionally, the third configuration information can also include at least one of the secondary cell frequency information and secondary cell status information. In addition, optionally, after receiving information from the third configuration, CU sends a first confirmation message to DU. Optionally, the first confirmation message can include at least one of the following information: the secondary cell identity information, the secondary cell index, the secondary cell frequency information and the secondary cell status information.
[0184] [0184] Optionally, in the two previous methods, the first confirmation message can also include configuration information from the protocol stack corresponding to the secondary cell. It should be understood that a specific method in which the first DU performs the configuration related to the protocol layer for each secondary cell in the first set of servant cells based on the first confirmation message is similar to a specific method in which the first DU performs the configuration related to the protocol stack for the secondary cell based on the second configuration information. To avoid repetition, the specific description of the step is omitted here.
[0185] [0185] Optionally, the third configuration information can be generated by the first DU based on a protocol supported by a first communications interface (for example, a Fl interface). For example, the third configuration information can be carried in a FL interface control plan message (denoted as FICP) and, in addition, the FL interface control plan message is a FI1AP message. Alternatively, the third configuration information can be carried in a user plan message from the Fl interface (denoted by FIUP). Optionally, the control plan message from the Fl interface is carried on a transport layer protocol of the SCTP, and the user plan message from the Fl interface is carried on a transport layer protocol of the GTP-U.
[0186] [0186] CU can receive the third configuration information through the first communications interface. For example, CU obtains the third CU of configuration information based on an F1AP.
[0187] [0187] It should be understood that a method for generating and sending the first acknowledgment message is similar to a method for generating and sending the second configuration information. To avoid repetition, the specific description of the step is omitted here.
[0188] [0188] In addition, it should be noted that to facilitate understanding, only one process in which CU sends the second configuration information to the first DU is shown in the figure, and a process in which the first DU sends the third information configuration settings for CU and a process in which CU sends the first confirmation message to the first DU are not shown, but this does not constitute any limitation to this order.
[0189] [0189] Optionally, method 500 also includes the following step.
[0190] [0190] S530. CU generates the first configuration information and the first DU forwards the first configuration information to the first terminal device.
[0191] [0191] Specifically, CU can send configuration information (denoted as the first configuration information for ease of differentiation and description) from a list of candidate secondary cells to the first terminal device. Specifically, CU can generate the first configuration information on the first layer of the protocol. Using the protocol stack structure shown in Figure 4 as an example, the first configuration information is information generated at the RRC layer, and the information is processed at the PDCP layer and then sent to the first DU through the first communications interface. The first DU processes the information received at the RLC layer, the MAC layer and the PHY layer successively, and an RF sends the processed information through an air interface.
[0192] [0192] Optionally, the first configuration information can be generated by CU in the first layer of the protocol. For example, the first configuration information can be carried in an RRC message.
[0193] [0193] In S530, the first terminal device can receive, through an air interface, the first configuration information that is sent by the first DU and that was processed by the first DU, and analyze the first configuration information in the RRC layer.
[0194] [0194] The first configuration information is used to indicate the first set of servant cells, configured by CU for the first terminal device. The first set of servant cells, indicated in the first configuration information, corresponds to the first set of servant cells, described in the description above in sS520, and includes at least one secondary cell. Optionally, the first configuration information can include a list of secondary cells (Scell list). The one-to-one mapping relationship between the secondary cell identity information, a secondary cell index, and the secondary cell frequency information is recorded in the secondary cell list.
[0195] [0195] Optionally, the secondary cell identity information can include at least one from an ECGI or a PCI.
[0196] [0196] The first configuration information is used to notify the first terminal device of the first set of servant cells and the corresponding configuration information, so that the first terminal device receives the configuration information of subsequent secondary cells. For example, the first configuration information may be the list of secondary cells above. The one-to-one mapping relationship between the secondary cell identity information, a secondary cell index, and the secondary cell frequency information is recorded in the secondary cell list. After receiving the first configuration information, the first terminal device can store the list of secondary cells. Therefore, upon receiving “afterwards an activation / deactivation indication (ie the first indication information in the following description), the first terminal device can find, on a corresponding frequency based on the configuration information, an active secondary cell corresponding to the index secondary cells.
[0197] [0197] Optionally, the first configuration information better indicates the status of the secondary cell.
[0198] [0198] The state of the secondary cell is the active state or the inactive state.
[0199] [0199] Specifically, the first configuration information can include an identity of each secondary cell and a state of the secondary cell, that is, the state of the secondary cell is explicitly indicated. Alternatively, it can be defined in a protocol that the first configuration information includes only a secondary cell in the active state or a secondary cell in the inactive state. Correspondingly, the first configuration information can include only the secondary cell in the active state or the secondary cell in the inactive state, that is, the status of the secondary cell is indicated implicitly.
[0200] [0200] Optionally, the first configuration information can be generated by CU in the first layer of the protocol. For example, the first configuration information can be carried in an RRC message.
[0201] [0201] SS40. The first DU determines, from the first set of servant cells, a state of at least one first secondary cell in the first indication information.
[0202] [0202] In this modality of this request, the first DU is the DU of the primary cell of the first terminal device, it can determine a state of each secondary cell for the first terminal device and generate the first indication information based on a result of the determination. Specifically, the first DU can determine which secondary cell in the first set of servant cells can be set to the active state in a current network condition, that is, a secondary cell that can be configured as a secondary cell for data transmission with the first terminal device; and the first DU can determine which secondary cell in the first set of servant cells can be set to the inactive state, that is, a secondary cell that is not currently configured as a secondary cell for data transmission with the first terminal device.
[0203] [0203] For ease of differentiation and description, in this modality of this application, a secondary cell included in the first indication information is denoted as a first secondary cell. It can be understood that the secondary cell included in the first indication information belongs to the set of servant cells. In other words, the secondary cell included in the first indication information can be a subset of the first set of servant cells, or a complete set of the first set of servant cells.
[0204] [0204] In a possible project, the first indication information can include all secondary cells in the first set of servant cells, and indicate a status for each secondary cell. In another possible project, the first indication information may include some secondary cells in the first set of servant cells, and is used to indicate a state for each of the secondary cells. In yet another possible design, the first indication information may include some secondary cells in the first set of servant cells, and some secondary cells are determined by the first DU or CU and are defined as active or inactive.
[0205] [0205] Optionally, S540 specifically includes: determining, by the first DU, the status of at least one first secondary cell in the first indication information, based on a measurement result.
[0206] [0206] The measurement result can be the measurement result described in S520. The specific content of the measurement result has been described in detail in the S520. The details are not described here again for the sake of brevity.
[0207] [0207] It can be understood that, when the RRC layer and the PDCP layer are implanted in the CU, and the RLC layer, the MAC layer, and the PHY layer are implanted in the first DU, the first DU can obtain the measurement results different layers of protocol from the first terminal device in different ways.
[0208] [0208] For a measurement report of the RRC layer of the first terminal device, the measurement report of the RRC layer can be carried in an RRC message and, therefore, the first DU cannot directly analyze the measurement report of the RRC layer, but you can forward the measurement report from the RRC layer to CU, and CU analyzes the first measurement result in the RRC layer based on the measurement report. CU sends the first measurement result to the first DU via the first communication interface. Optionally, the first measurement result can be carried in a first interface control plan message or a first interface user plan message.
[0209] [0209] For a PHY layer measurement report from the first terminal device, the PHY layer measurement report can be carried in a PHY layer message or in a MAC layer message, so the first DU can directly analyze the second measurement result when receiving the PHY layer measurement report.
[0210] [0210] It should be noted here that if the measurement result based on which the first DU determines an active / inactive state of each first secondary cell in the first set of servant cells includes the second measurement result of the third protocol layer of the first terminal device, a measurement signal (for example, a downlink reference signal) needs to be configured to be transmitted in carriers corresponding to the secondary cells of the first set of servant cells, in order to accurately obtain the second measurement result of the third protocol layer that is obtained by measuring by the first terminal device for the secondary cells in the first set of servant cells.
[0211] [0211] For a measurement report of an uplink channel that is obtained through measurement by the first DU based on a signal from the first terminal device, since the measurement report is obtained through measurement by the first DU, the first DU can directly obtain the third measurement result.
[0212] [0212] Therefore, the first DU determines the status of at least one first secondary cell in the first set of servant cells based on the measurement result, so that a relatively suitable secondary cell can be selected for carrier aggregation based on a transmission status uplink / downlink of the first terminal device in each secondary cell of the first set of servant cells. In addition, the determination is made on the basis of one or more of the measurement results mentioned above and therefore the accuracy of the determination can be improved.
[0213] [0213] It should be understood that the first DU can alternatively determine the active / inactive state of the first secondary cell in the first set of servant cells, based on other information. In addition, a specific method in which the first DU determines the active / inactive state of the first secondary cell in the first set of servant cells can be the same as a state of the art specific method in which a base station determines an active / inactive state of a first secondary cell in a first set of servant cells. The details are not described here for brevity.
[0214] [0214] It should also be understood that the step, in S540, in which the first DU determines, from the first set of servant cells, the first secondary cell that is defined for the active / inactive state is only a possible implementation determination of the active / inactive state of the first secondary cell. In fact, in the case of cross-site aggregation, the third DU can also determine a secondary cell administered by the third DU, to determine an active / inactive state of each secondary cell administered by the third DU. In this case, the first DU can determine only one secondary cell managed by the first DU, to determine an active / inactive state of at least one first secondary cell in the secondary cells managed by the first DU. It should also be understood that a specific method and process for determining the third DU is similar to a method and process for determining the first DU. To avoid repetition, the detailed description of the process is omitted here.
[0215] [0215] It should also be noted that when the first DU and the third DU determine the active / inactive state of each secondary cell administered by the first DU and the third DU, respectively, the third DU can send a determination result to the CU, and CU forwards the determination result to the first DU, so that the first DU notifies the first terminal device of the determination result in S550.
[0216] [0216] S550. The first DU generates the first indication information, and sends the first indication information to the first terminal device, where the first indication information is used to indicate the status of at least one first secondary cell.
[0217] [0217] It should be noted that, in the case of cross-site carrier aggregation, a first secondary cell in the first indication may be the secondary cell administered by the first DU, or it may be the secondary cell administered by the third DU.
[0218] [0218] As an example and without limitations, the first indication includes any of the following information: a first secondary cell that is defined for the active state; a first secondary cell that is set to inactive; or a first secondary cell and a state of the first secondary cell.
[0219] [0219] Optionally, the secondary cell can be indicated using a secondary cell index.
[0220] [0220] It has been described in the S520 that the first terminal device can store the one-to-one mapping relationship between the secondary cell identity information, a secondary cell index and secondary cell frequency information based on the first information. configuration received. Therefore, after receiving the first indication information, the first terminal device can determine a first active / inactive secondary cell based on an index, indicated in the first indication information, of the first secondary cell that is defined for the active / inactive state. After receiving the first indication information, the first terminal device can receive a physical downlink control channel (PDCCH) on a corresponding component carrier based on a first secondary cell that is set to the active state and that is indicated in the first indication information, and transmit data based on a programmed resource to the first terminal device. In addition, a measurement report can also be transmitted periodically or not periodically.
[0221] [0221] In this embodiment of the present invention, after receiving the first indication information, the first terminal device can update a state of at least one first secondary cell in a set of servant cells, based on the state, indicated in the first indication information, of at least one first secondary cell.
[0222] [0222] The current update means that a current status of each first secondary cell is updated based on a state, indicated in the first indication information received, of the first secondary cell, but the current status of the first secondary cell is not necessarily changed. For example, when the state indicated in the first indication information is the same as the current state, the current state does not need to be changed; and when the state indicated in the first indication information is different from the current state, the current state needs to be changed. For example, if a secondary cell (for example, a secondary cell tA, that is, an example of the first secondary cell) is in the active state, and the first information indicates that the secondary cell is in the inactive state, the secondary cell tA is updated to the inactive state. If a secondary cell (for example, a secondary cell + t + B, that is, another example of the first secondary cell) is in the inactive state, and the first information indicates that the secondary cell is in the active state, the secondary cell * HB is updated to the active state. If a secondary cell (for example, a secondary cell t * C, that is, yet another example of the first secondary cell) is in the active state, and the first indication information indicates that the secondary cell is in the active state, or a cell secondary (for example, a secondary cell * $ D, that is, yet another example of the first secondary cell) is in the inactive state, and the first indication information indicates that the secondary cell is in the inactive state, a current state of the secondary cell * $ C and a current state of the secondary cell * D are not changed. For brevity of the following description, the description of the same or similar case is omitted.
[0223] [0223] It should be understood that a processing action of the first terminal device after determining a secondary cell that is defined for the active state is the same as a processing action of a terminal device in the prior art. The details are not described here for brevity.
[0224] [0224] Optionally, the first indication information can be generated by the first DU in the second layer of the protocol. For example, the first indication information can be carried in a MAC control element (control element, CE).
[0225] [0225] In other words, the first indication information is sent using a layer 2 message, so that an active / inactive secondary cell is adjusted in real time based on a network condition, thus improving the real-time performance of the configuration validation.
[0226] [0226] For the first configuration information on the S530, the first configuration information can be carried in an RRC message. In other words, the CU can indicate the first set of servant cells to the first terminal device using the RRC message, so that the first terminal device obtains configuration information from the secondary cells in the first set of servant cells. Subsequently, the first DU can send the first indication information to the first terminal device, using a MAC CE, to indicate, in real time, a secondary cell that is defined for the active / inactive state, so that the first terminal device can transmit data based on the first indication information, using an active secondary cell, thus implementing carrier aggregation.
[0227] [0227] In addition, it has been described in the above description that a secondary cell in the first set of servant cells and the primary cell of the first terminal device may belong to the same DU, or may belong to different DUs. Furthermore, it is assumed that a DU of a secondary cell, whose DU is different from a DU of the primary cell of the first terminal device, is the third DU. Therefore, a secondary cell that can be defined for the active state can be a cell in the first DU, or it can be a cell in the third DU.
[0228] [0228] Optionally, method 500 also includes:
[0229] [0229] S560. The first DU sends the third indication information to the CU, where the third indication information is used to notify the CU about at least one first secondary cell and the status of at least one first secondary cell that is in the first indication information.
[0230] [0230] In other words, after determining the first secondary cell in the active / inactive state for the first terminal device, the first DU can notify the CU of the first secondary cell, so that the CU maintains an active / inactive state of the secondary cell of the first terminal device.
[0231] [0231] Optionally, the third indication information can be generated by the first DU based on a protocol supported by the first communication interface (for example, a Fl interface). For example, the third indication information can be carried in a control plan of the FL interface (denoted as an F1CP message) and, in addition, the control plan message of the FL interface is an F1IAP message. Alternatively, the third indication information can be carried in a user interface plan FL (denoted as an F1IUP). Optionally, the control plan message from the Fl interface is carried on a transport layer protocol of the SCTP, and the user plan message from the Fl interface is carried on a transport layer protocol of the GTP-U.
[0232] [0232] It should be noted that, in the case of aggregation of a cross-site carrier, the third indication information may also include the secondary cell administered by the third DU. Optionally, the method also includes: sending, by CU, the fourth indication information to the third DU, where the fourth indication information is used to instruct the third DU to configure, for the first terminal device, at least one secondary cell, defined for the active / inactive state, in the secondary cells managed by the third DU.
[0233] [0233] Through the previous steps, CU and the first DU complete the carrier aggregation configuration for the first terminal device.
[0234] [0234] Therefore, in this modality of this request, CU generates the first configuration information including the first set of servant cells in the first layer of the protocol, and indicates, using the first DU, the first configuration information including the first set of cells servants for the terminal device; and the first DU generates the first indication information in the second protocol layer, and sends the first indication information to notify the first terminal device of the active / inactive state of at least one first secondary cell, so that, after receiving the first indication information, the first terminal device can update an active / inactive state of the secondary cell, and transmit data using an active secondary cell. This implements the carrier aggregation configuration for a terminal device in a CU-DU architecture, and helps to increase the transmission bandwidth of the terminal device. In addition, in this modality of this order, the first DU determines the active / inactive state of at least one first secondary cell, so that the first indication information can be generated directly based on a result of the determination. This is relatively simple and convenient.
[0235] [0235] The following describes a communication method 600 provided in another embodiment of this order in detail with reference to Figure 6.
[0236] [0236] As shown in Figure 6, method 600 includes the following steps.
[0237] [0237] S610. A first terminal device establishes an RRC connection to a first cell in a first DU.
[0238] [0238] S620. CU configures a first set of servant cells for the first terminal device, and sends the configuration information (denoted as second configuration information for ease of differentiation and description) from the first set of servant cells to the first DU.
[0239] [0239] Optionally, the S620 can alternatively be the following: The first DU configures a first set of servant cells for the first terminal device, and sends the configuration information (denoted as the third configuration information for ease of differentiation and description) of the first set of CU servant cells. In addition, CU optionally sends a first confirmation message to the first DU.
[0240] [0240] For ease of understanding, only a process in which CU sends the second configuration information to the first DU is shown in the figure, and a process in which the first DU sends the third configuration information to CU and CU sends the first confirmation message to the first DU is not shown, but this does not constitute any limitation to this request.
[0241] [0241] S680. CU generates the first configuration information and the first DU forwards the first configuration information to the first terminal device.
[0242] [0242] Optionally, the first configuration information is carried in an RRC message.
[0243] [0243] It should be understood that a processing procedure from S610 to S630 is the same as a processing procedure from S510 to S530 in method 500. The details are not described here again for the sake of brevity.
[0244] [0244] S640. CU determines at least one first secondary cell and a state of at least one first secondary cell that is in the second indication information.
[0245] [0245] In this mode of this application, CU can be configured to determine an active / inactive state of at least one first secondary cell in the first set of servant cells. Specifically, CU can determine which secondary cell in the first set of servant cells can be set to the active state in a current network condition, that is, a secondary cell that can be configured as a secondary cell for data transmission with the first terminal device; and CU can determine which secondary cell in the first set of servant cells can be set to the inactive state, that is, a secondary cell that is not currently configured as a secondary cell for data transmission with the first terminal device.
[0246] [0246] Optionally, CU can determine, based on a measurement result, at least one first secondary cell and the status of at least one first secondary cell that are in the second indication information.
[0247] [0247] The measurement result can be the measurement result described in S620. The specific content of the measurement result was described in detail on the S520 in method 500. The details are not described here again for the sake of brevity.
[0248] [0248] Therefore, CU determines the active / inactive state of at least one first secondary cell based on the measurement result, so that a relatively suitable secondary cell can be selected for carrier aggregation based on an uplink transmission state. / downlink of the first terminal device in each secondary cell of the first set of servant cells. In addition, CU can perform the determination based on a first measurement result of a first protocol layer of the first terminal device, or it can perform the determination based on a second measurement result of a second protocol layer of the first reported terminal device. by the first DU and a third measurement result of an uplink channel. This helps to improve the validity of the determination.
[0249] [0249] It should be understood that CU can alternatively determine an active / inactive state of each secondary cell in the first set of servant cells, based on other information. A specific method in which CU determines the active / inactive state of each secondary cell in the first set of cells set of servant cells may be the same as a state of the art specific method in which a base station determines an active / inactive state of each secondary cell in a first set of cells set of servant cells. The details are not described here for brevity.
[0250] [0250] S650. CU generates the second indication information, and sends the second indication information to the first DU, where the second indication information includes information about the status of at least one first secondary cell.
[0251] [0251] After determining the active / inactive state of at least one first secondary cell in the first set of servant cells, CU can generate information (denoted as a second indication to facilitate differentiation) used to indicate the active / inactive state of at least a first secondary cell in the first set of servant cells.
[0252] [0252] Optionally, CU can generate the second indication information based on a protocol supported by a first communications interface. For example, the second referral information can be carried on a FL interface control plan (denoted as F1ICP), or it can be carried on a FL interface user plan (denoted as F1UP).
[0253] [0253] CU sends the second indication information to the first DU through the first communications interface, and the first DU can analyze the second indication information based on the protocol supported by the first communications interface, in order to determine the status of at least one first secondary cell.
[0254] [0254] Optionally, the second indication information and the second configuration information can be carried in the same message. For example, the second indication information and the second configuration information can be carried in the same message from the control plane of the Fl interface.
[0255] [0255] S660. The first DU generates the first indication information based on the second indication information, and sends the first indication information to the first terminal device, where the first indication information includes information about the status of at least a first secondary cell.
[0256] [0256] The first DU can generate the first indication information based on the status, indicated in the second indication information, of each first secondary cell.
[0257] [0257] The first DU sends the first indication information to the first terminal device via an air interface, to notify the first terminal device of the status of at least one first secondary cell, so that the first terminal device updates a state of at least a first secondary cell in the first set of servant cells, thus implementing carrier aggregation for the first terminal device.
[0258] [0258] Optionally, the first indication information is carried on a MAC CE.
[0259] [0259] It should be understood that an S660 processing procedure is the same as an S550 processing procedure in method 500. The details are not described here again for the sake of brevity.
[0260] [0260] Optionally, method 600 includes more:
[0261] [0261] S680. The first DU sends the third indication information to the CU, where the third indication information is used to notify the CU about at least one first secondary cell and the status of at least one first secondary cell that is in the first indication information.
[0262] [0262] In other words, after determining the active / inactive state of at least one first secondary cell for the first terminal device, the first DU can notify the CU of the active / inactive state, so that the CU maintains an active / inactive of the secondary cell of the first terminal device.
[0263] [0263] Optionally, the third indication information can be generated by the first DU based on a protocol supported by a first communication interface (for example, a Fl interface). For example, the information from the third indication can be carried in a control plan of the FL interface (denoted as a FI1CP message) and, in addition, the control plan message of the FL interface is a FIAP message. Alternatively, the third indication information can be carried in an F1 interface user plan (denoted as a FIUP). Optionally, the control plan message from the Fl interface is carried on a transport layer protocol of the SCTP, and the user plan message from the Fl interface is carried on a transport layer protocol of the GTP-U.
[0264] [0264] It should be noted in particular that, in a case of cross-site carrier aggregation, the third indication information may also include a secondary cell administered by a third DU. Optionally, the method also includes: sending, by CU, the fourth indication information to the third DU, where the fourth indication information is used to instruct the third DU to be configured,
[0265] [0265] Through the above steps, CU and the first complete DU carrier aggregation configuration for the first terminal device.
[0266] [0266] Therefore, in this modality of this request, CU, generates the first configuration information including the set of servant cells in the first layer of the protocol, and indicates, using the first DU, the first configuration information including the set of servant cells. for the terminal device; and the first DU generates the first indication information in the second protocol layer, and sends the first indication information to notify the first terminal device of the active / inactive state of at least one first secondary cell, so that, after receiving the first information of indication, the first terminal device can update an active / inactive state of the secondary cell, and transmit data using an active secondary cell. This implements the carrier aggregation configuration for a terminal device in a CU-DU architecture, and helps to increase the transmission bandwidth of the terminal device.
[0267] [0267] The following describes, in detail, with reference to Figure 7, a communication method 700 provided in yet another embodiment of this request. It should be understood that, the communication method 700 shown in Figure 7 can be a subsequent process of the communication method 500 or 600 shown in Figure 5 or Figure 6, or it can be a process that is carried out simultaneously with the communication method 500 or 600 shown in Figure 5 or Figure 6. This is not specifically limited in this order. Therefore, method 700 may include some or all steps of communication method 500 or communication method 600. In this mode, to avoid repetition, the description of the steps of communication method 500 or communication method 600 is omitted. In communication method 700, it is assumed that the first terminal device has established an RRC connection to a first cell in a first DU.
[0268] [0268] As shown in Figure 7, method 700 includes the following steps.
[0269] [0269] S710. The first terminal device accesses a primary secondary cell through a random access process, to communicate with a plurality of base station systems, using dual connectivity or multiconectivity technology.
[0270] [0270] Specifically, after the first terminal device establishes the RRC connection to the first cell in the first DU, the first DU can add the primary secondary cell and a secondary cell to the first terminal device, using an RRC message. For a definition of the primary secondary cell, see a definition in an existing protocol (for example, an LTE protocol). To be specific, the primary secondary cell can be: a cell that is in a secondary cell group (SCG) and that is used to perform a random access process with a terminal device during an SCG exchange process , or a cell that is used to perform the initial transmission of the physical uplink shared channel,
[0271] [0271] It should be noted that, unlike the description above in method 500 and method 600, after accessing the primary secondary cell, the first terminal device does not need to establish an RRC connection for a second DU. In other words, the first terminal device can receive a MAC layer message (for example, a MAC CE) and a PHY layer message that are sent by the second DU, and receive an RRC layer message (for example, an RRC message) from the first DU.
[0272] [0272] S720. A CU configures a second set of servant cells for the first terminal device, and sends the configuration information (denoted as fourth configuration information for ease of differentiation and description) from the second set of servant cells to the second DU.
[0273] [0273] Specifically, the fourth configuration information includes the second set of servant cells, configured by CU for the first terminal device, and the second set of servant cells can be a set of cells that are in cells administered by the second DU and which can be configured as secondary cells of the first terminal device. In other words, in candidate secondary cells configured by CU for the first terminal device, some candidate secondary cells can be administered by the second DU. Therefore, CU sends the fourth configuration information to the second
[0274] [0274] Optionally, the fourth configuration information is generated by CU based on a protocol supported by a first communications interface (for example, a Fl interface). For example, the fourth configuration information can be carried in a FL interface control plan message (denoted as FI1CP) and, in addition, the FL interface control plan message is a FI1AP message. Alternatively, the fourth configuration information can be carried in a user interface of the Fl interface (denoted as FIUP). Optionally, the control plan message from the Fl interface is carried on a transport layer protocol of the SCTP, and the user plan message from the Fl interface is carried on a transport layer protocol of the GTP-U.
[0275] [0275] It should be understood that the specific content included in the fourth configuration information and a function of the fourth configuration information are similar to those of the second configuration information described in the above description, and a specific process of S720 is similar to a process specific to S520. To avoid repetition, the specific description of the step is omitted here.
[0276] [0276] Optionally, the S720 can alternatively be as follows: The first DU configures a second set of servant cells for the first terminal device,
[0277] [0277] It should be understood that the specific content included in the fifth configuration information and a function of the fifth configuration information are similar to those of the third configuration information described in the above description, the specific content included in the second confirmation information and a The function of the second confirmation information is similar to that of the first confirmation message in the above description, and a specific process in which the first DU configures the second set of servant cells for the first terminal device is similar to a process specific to the S8S520. To avoid repetition, the specific description of the step is omitted here.
[0278] [0278] In addition, it should be noted that to facilitate understanding, only one process in which CU sends the fourth configuration information to the second DU is shown in the figure, and a process in which the first DU sends the fifth information configuration for CU is not shown, but this should not be a limitation in this order.
[0279] [0279] Optionally, method 700 also includes the following step:
[0280] [0280] S730. CU generates the sixth configuration information, and the first DU forwards the sixth configuration information to the first terminal device.
[0281] [0281] Specifically, the sixth configuration information includes the second set of servant cells,
[0282] [0282] It can be learned from the description above that the sixth configuration information sent by CU to the first terminal device is information generated in a first protocol layer. In this mode of this request, the sixth configuration information is carried in an RRC message. Therefore, the sixth configuration information can be forwarded to the first terminal device by the first DU. Specifically, the first DU can perform at least the processing of the second protocol layer on the received sixth configuration information, and forward the processed information to the first terminal device.
[0283] [0283] The second set of servant cells, indicated in the sixth configuration information corresponds to the second set of servant cells, included in the fourth configuration information described in S720 in the aforementioned description.
[0284] [0284] Optionally, the sixth configuration information can be generated by CU in the first layer of the protocol. For example, the sixth configuration information is carried in an RRC message.
[0285] [0285] It should be understood that the specific content included in the sixth configuration information and a function of the sixth configuration information are similar to the first configuration information described in the above description, and a specific process of the S730 is similar to a process specific to the S530. To avoid repetition, the specific description of the step is omitted here.
[0286] [0286] S740. The second DU generates the fifth indication information, and sends the fifth indication information to the first terminal device.
[0287] [0287] Specifically, the fifth indication information includes information on the status of at least one first secondary cell. The fifth indication information is used to instruct the first terminal device to update a state of at least one first secondary cell. It can be understood that at least one first secondary cell in the fifth information indication is all or some secondary cells in the second set of servant cells. For a relationship between the first secondary cell and the second set of servant cells, see the description above about a relationship between the first secondary cell and the first set of servant cells in method 500. To avoid repetition, the details are not described here again .
[0288] [0288] In this “modality of this request, each secondary cell and its status can be determined by the CU from the second set of servant cells (which can correspond to S640 in method 600), or can be determined by the second DU from the second set of servant cells (which may correspond to S540 in method 500).
[0289] [0289] In addition, the CU or the second DU can determine the status of each secondary cell based on a measurement result.
[0290] [0290] Optionally, the specific content of the measurement result can include at least one of the following items: a first measurement result of the first protocol layer of the first terminal device; a second measurement result from a third protocol layer from the first terminal device; and a third measurement result of an uplink channel which is reported by the second DU and which is obtained through measurement based on a signal from the first terminal device.
[0291] [0291] The first protocol layer is a protocol layer above the second protocol layer. In this embodiment of this request, by way of example and without limitations, the first protocol layer may be an RRC layer or a protocol layer that has a similar function of radio resource management. The third protocol layer can be a PHY layer or a protocol layer that has the similar function of providing a physical resource for transmitting data.
[0292] [0292] Optionally, the fifth indication information can be generated by the second DU in the second layer of the protocol. For example, the fifth indication information is carried on a MAC CE sent by the second DU to the first terminal device.
[0293] [0293] It should be understood that the specific content and a function of the fifth indication are similar to those of the first indication described in the aforementioned description, and a specific process of S740 can be similar to a specific process of S540 or S640. To avoid repetition, the specific description of the step is omitted here.
[0294] [0294] Optionally, method 700 also includes the following step:
[0295] [0295] S750. The second DU sends the sixth indication information to the CU, where the sixth indication information is used to notify the CU of at least one first secondary cell and the status of at least one first secondary cell that is in the fifth indication information.
[0296] [0296] Optionally, the sixth indication information can be generated by the second DU based on a protocol supported by the first communications interface (for example, a Fl interface). For example, the sixth indication information can be carried on a control plan of the Fl interface (denoted as an F1CP message) and, in addition, the control plan message of the Fl interface is an F1AP message. Alternatively, the sixth indication information can be carried on a user interface plan FL (denoted as FIUP). Optionally, the control plan message from the Fl interface is carried on a transport layer protocol of the SCTP, and the user plan message from the Fl interface is carried on a transport layer protocol of the GTP-U.
[0297] [0297] It should be understood that the specific content and a function of the sixth indication information are similar to those of the third indication information described in the aforementioned description, and a specific step process was described in detail in the aforementioned description. To avoid repetition, the specific description of the step is omitted here.
[0298] [0298] Through the previous steps, CU, the first DU and the second DU complete the configuration of carrier aggregation for the first terminal device in a scenario of dual connectivity or multiconectivity.
[0299] [0299] Therefore, in this modality of this request, CU generates the fourth configuration information including the second set of servant cells in the first protocol layer, and indicates, using the second DU, the fourth configuration information including the second set of cells servants in the first terminal device; and the second DU generates the fifth indication information in the second protocol layer, and sends the fifth indication information to notify the first terminal device of the active / inactive state of at least one first secondary cell, so that, after receiving the fifth information indication, the first terminal device can transmit data using an active secondary cell. This implements the configuration of carrier aggregation for a terminal device in a CU-DU architecture, and helps to increase the transmission bandwidth of the terminal device. In addition, the method is also applicable to a dual connectivity or multiconectivity scenario, which helps to increase the transmission bandwidth of the terminal device and improve the robustness of mobility.
[0300] [0300] It should be understood that the sequential numbers of the previous processes do not mean sequences of execution in various modalities of this request. The sequences of execution of the processes must be determined based on the functions and internal logic of the processes, and must not be interpreted as any limitation to the processes for implementing the modalities of this request.
[0301] [0301] The aforementioned describes in detail the communication methods in the modalities of this application with reference to Figure 5 to Figure 7, and then describes in detail the devices in the modalities of this application, with reference to Figure 8 to Figure 12.
[0302] [0302] One mode of this request provides a network node. Next, a structure and functions of the network node are described with reference to Figure 8. Figure 8 is a schematic block diagram of a network node 10 provided in this embodiment of this application. As shown in Figure 8, network node 10 includes a receiver 11, a transmitter 12 and a processor
[0303] [0303] Transmitter 12 is configured to send the first configuration information to the terminal device.
[0304] [0304] Transmitter 12 is still configured to send the first indication information. The first indication information includes information about the status of at least one first secondary cell, the first secondary cell belongs to the set of servant cells and the first indication information is generated by the first network node in a second protocol layer.
[0305] [0305] Processor 13 and memory 14 can be combined in one processing device. Processor 13 is configured to execute program code stored in memory 14, to implement the above functions. During specific implementation, memory 14 can be integrated into processor 13, or independent of processor 13.
[0306] [0306] It should be understood that, the network node 10 can correspond to the first DU in the communication method 500 or 600 provided in the modalities of the present invention, and the network node 10 can include modules configured to carry out the method performed by the first DU in communication method 500 in Figure 5 or communication method 600 in Figure 6. In addition, the modules of network node 10 and the other operations and / or functions mentioned above are separately to implement the corresponding processes of the communication method 500 in Figure 5 or the communication method 600 in Figure 6. For a specific process in which the modules perform the corresponding steps above, refer to the above description in the method modalities with reference to Figure 5 and Figure 6. For brevity, the details are not described here again.
[0307] [0307] One mode of this request also provides a network node. Next, a structure and functions of the network node are described with reference to Figure 9. Figure 9 is another schematic block diagram of a network node 20 provided in this embodiment of this order. As shown in Figure 9, network node 10 includes a receive module 21 and a send module
[0308] [0308] Receiving module 21 and sending module 22 can be implemented by software or hardware. When the receiving module 21 and the sending module 22 are implemented by hardware, the receiving module 21 can be the receiver 11 in Figure 8, and the sending module 22 can be the transmitter 12 in Figure 8.
[0309] [0309] One mode of this request also provides a network node. Next, a structure and functions of the network node are described with reference to Figure 10. Figure 10 is a schematic block diagram of a network node 30 in this embodiment of this application. As shown in Figure 10, network node 30 includes a receiver 31, a transmitter 32, and a processor
[0310] [0310] Processor 33 and memory 34 can be combined in one processing device. The processor 33 is configured to execute the program code stored in memory 34, to implement the previous functions. During specific implementation, memory 34 can be integrated into processor 33, or independent of processor 33.
[0311] [0311] It should be understood that, the network node 30 can correspond to the CU in the communication method 500 or 600 provided in the modalities of the present invention, and the network node 30 can include modules configured to perform the method performed by the CU in communication method 500 in Figure 5 or communication method 600 in Figure 6. In addition, the modules of node 30 of the network and the other operations and / or functions mentioned above are separately to implement the corresponding processes of communication method 500 in Figure 5 or the communication method 600 in Figure 6. For a specific process in which the modules perform the corresponding steps above, refer to the description above in the method modalities with reference to Figure 5 and Figure 6. For greater brevity, the details are not described here again.
[0312] [0312] One mode of this request also provides a network node. The following describes a structure and functions of the network node with reference to Figure 11. Figure 11 is another schematic block diagram of a network node 40, according to one embodiment of this application. As shown in Figure 11, network node 40 includes a sending module 41 and a processing module 42.
[0313] [0313] The sending module 41 can be implemented by software or hardware. When shipping module 41 is implemented by hardware, shipping module 41 can be transmitter 32 in Figure 10.
[0314] [0314] It should be understood that, in the modalities of this request, the processor may be a central processing unit (CPU), or the processor may be another general-purpose processor, a digital signal processor processor, DSP), an application-specific integrated circuit (ASIC), an array of field programmable gates (field programmable gate array, FPGA) or other programmable logic device, a discrete gate or transistor logic device , a discrete hardware component, or similar. The general purpose processor can be a microprocessor or the processor can be any conventional processor, or similar.
[0315] [0315] It can also be understood that the memory in the modalities of this application can be a volatile memory or a non-volatile memory, or it can include a volatile memory and a non-volatile memory. Non-volatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (programmable ROM, PROM), a programmable erasable read-only memory (erasable PROM, EPROM), an erasable programmable read-only memory electrically (electrically EPROM, EEPROM), or a flash memory. Volatile memory can be a random access memory (RAM), and is used as an external cache. As an example and without limitations, many forms of random access memory (RAM) can be used, for example, a static random access memory (static RAM, SRAM), a dynamic random access memory (DRAM) ), a synchronous dynamic random access memory (synchronous DRAM, SDRAM), a synchronous dynamic random access memory with double data rate (double data rate SDRAM, DDR SDRAM), an enhanced synchronous random dynamic access memory (enhanced SDRAM, ESDRAM), a synchronous link dynamic random access memory (synchlink DRAM, SLDRAM), and a direct rambus random access memory (direct rambus RAM, DR RAM).
[0316] [0316] One modality of this request also provides a radio access network system. Figure 12 is a schematic block diagram of a radio access network system 50 in this embodiment of this application. As shown in Figure 12, the radio access network system 50 includes a first network node and a second network node. The first network node can be network node 10 shown in Figure 8, and the second network node can be network node 30 shown in Figure 10; or the first network node can be network node 20 shown in Figure 9, and the second network node can be network node 40 shown in Figure 11
[0317] [0317] All or some of the previous modalities can be implemented through software, hardware, firmware, or any combination thereof. When using software to implement the modalities, the previous modalities can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instruction is loaded or executed on a computer, all or some of the procedures or functions according to the modalities of the present invention are generated. The computer can be a general purpose computer, a dedicated computer, a computer network, or another programmable device. Computer instructions can be stored on a computer-readable storage medium or they can be transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center in a wired manner (for example, infrared, radio and microwave). The computer-readable storage medium can be any usable medium accessible by a computer, or a data storage device, such as a server or a data center, integrating one or more usable media.
[0318] [0318] It should be understood that the term "and / or" in this specification describes only one association relationship to describe associated objects and represents that three relationships can exist. For example, A and / or B can represent the following three cases: Only A exists, both A and B exist, and only B exists. In addition, the "/" character in this specification generally indicates an "or" relationship between associated objects.
[0319] [0319] A person of ordinary skill in the art may be aware that the units and steps of algorithms in the examples described with reference to the modalities disclosed in this specification may be implemented by electronic hardware or by a combination of computer software and electronic hardware. Whether functions are performed by hardware or software depends on particular applications and the design constraints of technical solutions. A person skilled in the art may use different methods to implement the functions described for each particular application, but the implementation should not be considered to be beyond the scope of this application.
[0320] [0320] It can be clearly understood by a person versed in the technique that, for the purpose of a convenient and brief description, for a detailed work process of the system, apparatus and unit, reference can be made to a corresponding process in the method modalities . The details are not described here again.
[0321] [0321] In the various modalities provided in this application, it should be understood that the system, apparatus and method disclosed can be implemented in other ways. For example, the described device mode is just an example. For example, the division of the unit is purely logical and can be another division in the actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some characteristics can be ignored or not realized. In addition, the mutual couplings displayed or discussed or direct couplings or communication connections can be implemented through the use of some interfaces. Indirect couplings or communication connections between devices or units can be implemented electronically, mechanically or otherwise.
[0322] [0322] The units described as separate parts may or may not be physically separate, and the parts presented as units may or may not be physical units, may be located in one position, or may be distributed in a plurality of network units. Some or all of the units can be selected based on actual needs to achieve the objectives of the modalities solutions.
[0323] [0323] In addition, the functional units in the modalities of this order can be integrated into a processing unit, or each of the units can exist physically alone, or two or more units can be integrated into one unit.
[0324] [0324] When functions are implemented in the form of a functional software unit and sold or used as a stand-alone product, the functions can be stored on a computer-readable storage medium. Based on this understanding, the technical solutions of this application essentially, or the part that contributes to the state of the art, or some of the technical solutions, can be implemented in the form of a software product. The computer software product is stored on a storage medium, and includes several instructions for instructing a computer device (which may be a personal computer, a server, a network device or the like) to perform all or some of the steps in the methods described in the modalities of this application. The aforementioned storage medium includes: any medium that can store the program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or a compact disc.
[0325] [0325] The preceding descriptions are merely specific implementations of this application, but are not intended to limit the scope of protection of this application. Any variation or substitution readily perceived by a person skilled in the art, within the technical scope disclosed in this order, must be included in the scope of protection of this order. Accordingly, the scope of protection of this claim is subject to the scope of protection of the claims.

权利要求:
Claims (19)
[1]
1. Communication method, characterized by the fact that the method is applied to a radio access network system comprising a first network node and a second network node, the first network node communicating with the second network node through a first communication interface, and the method comprises: receiving, by the first network node, the first configuration information from the second network node, where the first configuration information comprises a set of servant cells configured for a terminal device, oThe set of servant cells comprises at least one secondary cell, the first configuration information indicating a state of at least one secondary cell, the state of at least one secondary cell is an active state or an inactive state, and the first configuration information it is generated by the second network node in a first protocol layer; send, by the first network node, the first configuration information to the terminal device; and sending, through the first network node, first indication information to the terminal device, wherein the first indication information comprises information about a state of at least one first secondary cell, at least one first secondary cell belongs to the set of cells servants, and the first indication information is generated by the first network node in a second protocol layer.
[2]
2. Method, according to claim 1, characterized by the fact that the method further comprises:
receiving, by the first network node, second indication information sent by the second network node, wherein the second indication information comprises at least one first secondary cell, or comprises at least one first secondary cell and the status of at least a first secondary cell.
[3]
3. Method according to claim 1, characterized by the fact that the method further comprises: determining, by the first network node, the status of at least one first secondary cell in the first indication information.
[4]
4. Method according to claim 3, characterized in that the determination, by the first network node, of the status of at least one first secondary cell in the first indication information comprises: determining, by the first network node, the state of at least one first secondary cell in the first indication information based on a measurement result, wherein the measurement result comprises at least one of the following: a first measurement result of the first protocol layer of the terminal device; a second measurement result from a third protocol layer of the terminal device; and a third measurement result of an uplink channel that is obtained by measuring by the first network node based on a signal sent by the terminal device.
[5]
5. Method, according to claim 4, characterized by the fact that if a first measurement report comprises the first measurement result of the first protocol layer of the terminal device, the method further comprises: sending, through the first network node to the second network node, the first measurement report reported by the terminal device; and receiving, by the first network node, the first measurement result sent by the second network node, where the first measurement result is determined by the second network node based on the first measurement report.
[6]
Method according to any one of claims 1 to 5, characterized in that the method further comprises: receiving, by the first network node, second configuration information from the second network node, wherein the second configuration information comprises secondary-cell identity information and a secondary-cell index of the set of servant cells configured by the second network node for the terminal device.
[7]
7. Method according to claim 6, characterized in that the second configuration information further indicates the state of at least one secondary cell, wherein the state of at least one secondary cell is the active state or the inactive state. .
[8]
8. Method according to any one of claims 1 to 5, characterized in that the method further comprises: sending, by the first network node, third configuration information to the second network node, in which the third network information The configuration is used to indicate, for the second network node, the set of servant cells configured for the terminal device, the third configuration information indicating the status of at least one secondary cell, and the status of at least one secondary cell is the active state or the inactive state.
[9]
9. Method according to any one of claims 1 to 8, characterized in that the method further comprises: sending, by the first network node, the third indication information to the second network node, in which the third information referral is used to notify the second network node of at least one first secondary cell and the status of at least one first secondary cell that is in the first referral information.
[10]
Method according to any one of claims 1 to 9, characterized in that at least the first protocol layer is implanted in the second network node, and at least the second protocol layer and the third protocol layer are deployed on the first network node, where the first protocol layer is an RRC radio resource control layer, the second protocol layer is a MAC access control layer, and the third protocol layer is an PHY physics.
[11]
11. Communication method, characterized by the fact that the method is applied to a radio access network system comprising the first network node and a second network node, the first network node communicates with the second network node through a first communication interface, and the method comprises: sending, through the second network node, the first configuration information to the first network node, where the first configuration information comprises a set of servant cells configured for a terminal device The set of servant cells comprises at least one secondary cell, the first configuration information indicating a state of at least one secondary cell, the state of at least one secondary cell is an active state or an inactive state, and the first information configuration is generated by the second network node in a first protocol layer; and sending, through the second network node, second configuration information to the first network node, where the second configuration information comprises secondary-cell identity information and a secondary-cell index of the set of servant cells configured by the second network node to the terminal device.
[12]
12. Method according to claim 11, characterized in that the second configuration information further indicates the state of at least one secondary cell, wherein the state of at least one secondary cell is the active state or the inactive state. .
[13]
13. Method according to claim 11 or 12, characterized by the fact that the method further comprises: determining, by the second network node, the set of servant cells based on a measurement result.
[14]
14. Method according to claim 13, characterized in that the measurement result comprises at least one of the following: a first measurement result of the first protocol layer of the terminal device; a second measurement result from a third protocol layer of the terminal device; and a third measurement result of an uplink channel which is reported by the first network node and which is obtained by means of measurement based on a signal sent by the terminal device.
[15]
15. Method, according to claim 14, characterized by the fact that if the measurement result comprises the second measurement result, of the third protocol layer, reported by the terminal device, the method further comprises: receiving, through the second network, the second measurement result sent by the first network node, where the second measurement result is determined by the first network node based on a measurement report, of the third protocol layer, reported by the terminal device.
[16]
16. Method according to any one of claims 11 to 15, characterized in that at least the first protocol layer is implanted in the second network node, and at least a second protocol layer and the third protocol layer are deployed on the first network node, where the first protocol layer is an RRC radio resource control layer, the second protocol layer is a MAC access control layer, and the third protocol layer is an PHY physics.
[17]
17. Network node, characterized by the fact that it comprises: a memory, configured to store a computer program; and a processor, configured to run the computer program stored in memory, so that the network node performs the method as defined in any one of claims 1 to 10.
[18]
18. Network node, characterized by the fact that it comprises: a memory, configured to store a computer program; and a processor, configured to execute the computer program stored in memory, so that the network node performs the method as defined in any one of claims 11 to 16.
[19]
19. Radio access network system, characterized by the fact that it comprises: at least one network node as defined in claim 17; and at least one network node as defined in claim 18.

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公开号 | 公开日

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JP2020523895A|2020-08-06|

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CN109150451A|2019-01-04|

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EP3629630B1|2021-09-22|

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EP3629630A4|2020-07-08|

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WO2018228510A1|2018-12-20|

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EP3629630A1|2020-04-01|

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US20200120735A1|2020-04-16|

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KR20200015750A|2020-02-12|

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CN113455100A|2019-03-29|2021-09-28|华为技术有限公司|Method and apparatus for relay communication|

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CN111866963B|2019-04-28|2021-12-31|华为技术有限公司|Communication method, communication device, computer storage medium, and communication system|

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CN110098912A|2019-05-23|2019-08-06|武汉恒泰通技术有限公司|A method of realizing carrier wave polymerization|

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CN112003667B|2019-05-27|2021-12-31|华为技术有限公司|Time sequence management method, equipment and system|

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CN112399440A|2019-08-16|2021-02-23|华为技术有限公司|Method and device for determining cell configuration|

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CN112752276A|2019-10-31|2021-05-04|成都华为技术有限公司|Method and device for accessing network equipment|

法律状态:
2021-11-03| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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CN201710459213.4|2017-06-16|

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CN201710459213.4A|CN109150451A|2017-06-16|2017-06-16|Communication means, network node and wireless access network system|

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PCT/CN2018/091391|WO2018228510A1|2017-06-16|2018-06-15|Communication method, network node, and radio access network system|

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