Reference signal resource configuration method and related device

Abstract

The present application provides a reference signal resource configuration method and a related device. In the method, a terminal device can communicate between different antenna ports in any of M antenna port groups by means of coherent joint transmission (CJT), and the terminal device can also communicate between different antenna port groups among the M antenna port groups by means of non-coherent joint transmission (NCJT). Therefore, for M antenna port groups, by performing CJT between different antenna ports in the same antenna port group and by performing NCJT between different antenna port groups, the spatial diversity gain is obtained by means of NCJT, and the interference between different antenna ports in the same antenna port group and the interference between different antenna port groups can be converted into communication signals of the terminal device, such that the interference is reduced by means of CJT, thereby improving the communication efficiency.

Description

A method for configuring reference signal resources and related equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on September 6, 2023, with application number 202311149196.6 and application name “A method for configuring reference signal resources and related equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless technology, and in particular to a method for configuring reference signal resources and related equipment. Background Art

[0003] Wireless communication can be the transmission of information between two or more communication nodes without using conductors or cables, or over the air. For example, communication nodes include network devices and terminal devices. Generally, terminal devices can access network devices and receive scheduling and instruction information from them to achieve wireless communication.

[0004] Currently, multiple input multiple output (MIMO) technology is a communication technology used to improve user experience. The application of MIMO technology can also increase the average cell capacity. In MIMO systems, to ensure a higher user experience, the deployment of network equipment may gradually become denser.

[0005] However, in MIMO systems, how to increase capacity and reduce interference is a technical problem that needs to be solved urgently.

[0006] Summary of the Invention

[0007] The present application provides a method for configuring reference signal resources and related equipment for reducing interference and improving communication efficiency.

[0008] In a first aspect, the present application provides a method for configuring reference signal resources. The method is performed by a terminal device (or terminal), or by a component (e.g., a processor, chip, or chip system) in the terminal device. Alternatively, the method may be implemented by a logic module or software that implements all or part of the terminal device's functions. In the first aspect and its possible implementations, the method is described using the example of a terminal device performing the method. In this method, a terminal device receives configuration information, where the configuration information is used to configure resources for N groups of downlink reference signals, where N is an integer greater than 1. At least two groups of downlink reference signals among the N groups of downlink reference signals are respectively sent through different antenna port groups among M antenna port groups, where M is an integer less than or equal to N. Any group among the N groups of downlink reference signals includes at least one downlink reference signal, and any group among the M antenna port groups includes at least two antenna ports. Different antenna ports in any one of the M antenna port groups are used to transmit downlink data through coherent joint transmission (CJT), and different antenna port groups in the M antenna port groups are used to transmit downlink data through non-coherent joint transmission (NCJT). The terminal device receives downlink reference signals from the M antenna port groups based on the configuration information. The terminal device sends first information, where the first information is used to indicate measurement results of the downlink reference signals of the M antenna port groups.

[0009] Based on the above technical solution, after the terminal device receives the resources for configuring N groups of downlink reference signals, the terminal device can send first information for indicating the measurement results of the downlink reference signals of the M antenna port groups. Among them, at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups of the M antenna port groups. In addition, different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT. In other words, the terminal device can communicate with different antenna ports in one of the M antenna port groups by means of CJT, and the terminal device can also communicate between different antenna port groups in the M antenna port groups by means of NCJT. Thus, in the M antenna port groups, through CJT transmission between different antenna ports in the same antenna port group, and through NCJT transmission between different antenna port groups in different antenna port groups, while obtaining spatial diversity gain through NCJT, the interference between different antenna ports in the same antenna port group and between different antenna port groups can be converted into communication signals (i.e., useful signals) of the terminal device, and then the interference is reduced through CJT to improve communication efficiency.

[0010] In addition, in the implementation process of the terminal device communicating with different antenna ports only through one of the CJT and NCJT methods, since the requirements of CJT for processing power (and / or transmission power) are higher than those of NCJT, the scope of application of the method using only CJT is limited; and since the processing performance of NCJT (such as downlink transmission performance, signal anti-interference performance) is lower than that of CJT, the performance gain of the method using only NCJT is limited. In the M antenna port groups of the above technical solution, through CJT transmission between different antenna ports in the same antenna port group, and through NCJT transmission between different antenna port groups in different antenna port groups, the above solution can use CJT to improve the performance of NCJT, and use NCJT to reduce the requirements of CJT for processing power and transmission power, so as to obtain the joint gain of CJT and NCJT.

[0011] In the present application, the downlink reference signal may include a channel state information reference signal (CSI-RS), a synchronization signal / physical broadcast channel block (SS / PBCH block or SSB), etc.

[0012] Exemplarily, taking the downlink reference signal as CSI-RS as an example, the CSI-RS configuration information received by the terminal device can perform resource configuration on the CSI-RS at three granularities: resource configuration (resourceConfig), resource set (resourceSet) and resource (resource). In the above technical solution, the configuration information is used to configure the resources of N groups of downlink reference signals. The resources of the N groups of downlink reference signals can be CSI-RS resources configured by N resourceConfigs, or CSI-RS resources configured by N resourceSets, or CSI-RS resources configured by N resources. There is no limitation here. In addition, when the downlink reference signal is CSI-RS, the measurement result of the downlink reference signal includes at least one of a rank indication (RI), a precoding matrix indication (PMI) and a channel quality indicator (CQI).

[0013] It should be noted that the resources of the N groups of downlink reference signals configured by the configuration information include the port resources of the sending ports of the N groups of downlink reference signals. In other words, the configuration information may include the resource index and / or resource identifier of the port of the sending port of the N groups of downlink reference signals.

[0014] It should be understood that one of the N groups of downlink reference signals may be sent through one antenna port group of the M antenna port groups, and another group of downlink reference signals in the N groups of downlink reference signals may be sent through another antenna port group of the M antenna port groups. In other words, the N groups of downlink reference signals may be sent by M antenna port groups, and the downlink reference signals sent by any one of the M antenna port groups are respectively downlink reference signals of different groups in the N groups of downlink reference signals, that is, the sending ports of the N groups of downlink reference signals are located in the M antenna port groups. Among them, any one of the M antenna port groups is used to send one or more groups of downlink reference signals in the N groups of downlink reference signals, or in other words, different antenna port groups in the M antenna port groups are respectively used to send different downlink reference signals in the N groups of downlink reference signals.

[0015] Optionally, different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, including: at least two antenna ports contained in any one of the M antenna port groups are used to transmit downlink data on the same time-frequency resources.

[0016] Optionally, different antenna port groups among the M antenna port groups are used to transmit downlink data through NCJT, including: different antenna port groups among the M antenna port groups are used to transmit downlink data on different time-frequency resources.

[0017] In a possible implementation manner of the first aspect, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N transmission reception points (TRPs).

[0018] Based on the above technical solution, different groups of downlink reference signals within the N groups of downlink reference signals are transmitted via N TRPs. In other words, the N groups of downlink reference signals are transmitted via N TRPs. For example, there is a one-to-one correspondence between the N groups of downlink reference signals and the N TRPs. Thus, the above technical solution can achieve the combined gain of CJT and NCJT between different TRPs at the TRP granularity.

[0019] Optionally, the downlink reference signals of the M antenna port groups may come from the same network device, and accordingly, the terminal device may send first information to the network device for indicating the measurement results of the downlink reference signals of the M antenna port groups. The downlink reference signals of the M antenna port groups may come from different network devices (the different network devices may include the network device where the service TRP is located, and the network device where the collaborative TRP is located), and accordingly, the terminal device may send the first information to one of the different network devices (for example, the network device where the service TRP is located), or the terminal device may send different parts of the first information to different network devices respectively.

[0020] In a possible implementation manner of the first aspect, different groups of downlink reference signals in the N groups of downlink reference signals are sent through different beams.

[0021] Based on the above technical solution, different groups of downlink reference signals in the N groups of downlink reference signals are sent through different beams. In other words, the N groups of downlink reference signals are sent through N beams. For example, there is a one-to-one correspondence between the N groups of downlink reference signals and the N beams. Among the N beams, one or more beams can correspond to a TRP, that is, the N beams correspond to K TRPs, where K is less than or equal to N. Therefore, the above technical solution can use beam granularity to obtain the joint gain of CJT and NCJT between different beams.

[0022] Optionally, the different beams may be different digital beams in digital beamforming (DBF) technology, different analog beams in analog beamforming (ABF) technology, or different hybrid beams in hybrid beamforming (HBF) technology.

[0023] In a possible implementation of the first aspect, downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources; and / or, downlink reference signals sent by different antenna port groups in the M antenna port groups are sent through different time-frequency resources.

[0024] Optionally, downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources.

[0025] Optionally, the downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups and the downlink reference signals sent by at least two antenna ports included in another antenna port group in the M antenna port groups are sent through different time-frequency resources.

[0026] Based on the above technical solution, during the transmission of the downlink reference signal, different antenna ports in any group of the M antenna ports can send the downlink reference signal through CJT, and antenna ports in different antenna port groups among the M antenna ports can send the downlink reference signal through NCJT, so that the transmission process of the N groups of downlink reference signals can obtain the joint gain of CJT and NCJT.

[0027] In a possible implementation of the first aspect, when the measurement result of the downlink reference signal includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device.

[0028] Based on the above technical solution, different antenna port groups in the M antenna port groups can communicate with the terminal device through NCJT. When the measurement results fed back by the terminal device include RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device, so that the network device can obtain downlink channel information that matches the number of receiving antenna ports of the terminal device based on the measurement results.

[0029] In a possible implementation manner of the first aspect, the configuration information includes indication information indicating a correspondence between the transmission ports of the N groups of downlink reference signals and the M antenna port groups.

[0030] Based on the above technical solution, the configuration information received by the terminal device may also include indication information indicating the correspondence between the sending ports of the N groups of downlink reference signals and the M antenna port groups, so that the terminal device can clearly communicate between different antenna ports in any group of the M antenna port groups through CJT based on the indication information, and clearly communicate between different antenna ports in the M antenna ports through NCJT based on the indication information.

[0031] Optionally, the indication information and the configuration information may be carried in different messages / information / signaling.

[0032] A second aspect of the present application provides a method for configuring reference signal resources. The method is performed by a network device, or by a component (e.g., a processor, chip, or chip system) within the network device. Alternatively, the method may be implemented by a logic module or software that implements all or part of the network device's functions. In the second aspect and its possible implementations, the method is described using the example of a network device performing the method. In this method, a network device determines configuration information, where the configuration information is used to configure resources for N groups of downlink reference signals, where N is an integer greater than 1. At least two groups of downlink reference signals among the N groups of downlink reference signals are respectively sent through different antenna port groups among M antenna port groups, where M is an integer less than or equal to N. Any group among the N groups of downlink reference signals includes at least one downlink reference signal, and any group among the M antenna port groups includes at least two antenna ports. Different antenna ports in any one of the M antenna port groups are used to transmit downlink data through coherent joint transmission (CJT), and different antenna port groups in the M antenna port groups are used to transmit downlink data through non-coherent joint transmission (NCJT). The terminal device receives downlink reference signals from the M antenna port groups based on the configuration information, and the network device sends the configuration information.

[0033] Based on the above technical solution, the configuration information sent by the network device is used to configure the resources of N groups of downlink reference signals, wherein at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in the M antenna port groups. In addition, different antenna ports in any group of the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT. In other words, the terminal device can communicate with different antenna ports in one antenna port group among the M antenna port groups through CJT, and the terminal device can also communicate with different antenna port groups in the M antenna port groups through NCJT. Therefore, in the M antenna port groups, through CJT transmission between different antenna ports in the same antenna port group and through NCJT transmission between different antenna port groups in different antenna port groups, while obtaining spatial diversity gain through NCJT, it is also possible to convert interference between different antenna ports in the same antenna port group and between different antenna port groups into communication signals (i.e., useful signals) for the terminal device, thereby reducing interference through CJT to improve communication efficiency.

[0034] In addition, in the implementation process of the terminal device communicating with different antenna ports only through one of the CJT method and the NCJT method, since the requirements of CJT for processing power (and / or transmission power) are higher than the requirements of NCJT for processing power (and / or transmission power), the scope of application of the method using only CJT is limited; and since the processing performance of NCJT is lower than the processing performance of CJT, the performance gain of the method using only NCJT is limited. In the M antenna port groups of the above technical solution, through CJT transmission between different antenna ports in the same antenna port group, and through NCJT transmission between different antenna port groups in different antenna port groups, the above solution can use CJT to improve the performance of NCJT, and use NCJT to reduce the requirements of CJT for processing power and transmission power, so as to obtain the joint gain of CJT and NCJT.

[0035] In a possible implementation manner of the second aspect, the method further includes: the network device receiving first information, where the first information is used to indicate part or all of the measurement results of the downlink reference signals of the M antenna port groups.

[0036] Based on the above technical solution, the network device can also receive part or all of the first information indicating the measurement results of the downlink reference signal of the M antenna port groups, so that the network device can obtain the downlink channel information corresponding to the M antenna port groups based on the first information.

[0037] Optionally, the downlink reference signals of the M antenna port groups may come from the same network device, and accordingly, the terminal device may send first information to the network device for indicating the measurement results of the downlink reference signals of the M antenna port groups. The downlink reference signals of the M antenna port groups may come from different network devices (the different network devices may include the network device where the service TRP is located, and the network device where the collaborative TRP is located), and accordingly, the terminal device may send the first information to one of the different network devices (for example, the network device where the service TRP is located), or the terminal device may send different parts of the first information to different network devices respectively.

[0038] In a possible implementation of the second aspect, the M antenna port groups include multiple antenna ports, and the method further includes: determining, by the network device, a correspondence between the multiple antenna ports and the M antenna port groups based on second information; the second information includes at least one of the following:

[0039] a transmission capability of each of the plurality of antenna ports;

[0040] signal qualities of reference signals corresponding to the multiple antenna ports, wherein a difference in signal quality of reference signals corresponding to a same antenna port group in the M antenna port groups is lower than a threshold;

[0041] receiving space information of reference signals corresponding to the multiple antenna ports, wherein the receiving space includes multiple subspaces, and each antenna port of the same antenna port group in the M antenna port groups corresponds to the same subspace;

[0042] Analog beamforming identities (ABF IDs) corresponding to the multiple antenna ports, where each antenna port in the same antenna port group among the M antenna port groups corresponds to the same ABF ID.

[0043] Based on the above technical solution, the network device can determine the correspondence between the multiple antenna ports included in the M antenna port groups and the M antenna port groups based on at least one of the above items to improve the flexibility of the solution implementation.

[0044] In a possible implementation manner of the second aspect, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs.

[0045] Based on the above technical solution, different groups of downlink reference signals within the N groups of downlink reference signals are transmitted via N TRPs. In other words, the N groups of downlink reference signals are transmitted via N TRPs. For example, there is a one-to-one correspondence between the N groups of downlink reference signals and the N TRPs. Thus, the above technical solution can achieve the combined gain of CJT and NCJT between different TRPs at the TRP granularity.

[0046] In a possible implementation manner of the second aspect, different groups of downlink reference signals in the N groups of downlink reference signals are sent through different beams.

[0047] Based on the above technical solution, different groups of downlink reference signals in the N groups of downlink reference signals are sent through different beams. In other words, the N groups of downlink reference signals are sent through N beams. For example, there is a one-to-one correspondence between the N groups of downlink reference signals and the N beams. Among the N beams, one or more beams can correspond to a TRP, that is, the N beams correspond to K TRPs, where K is less than or equal to N. Therefore, the above technical solution can use beam granularity to obtain the joint gain of CJT and NCJT between different beams.

[0048] In a possible implementation of the second aspect, the downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources; and / or, the downlink reference signals sent by different antenna port groups in the M antenna port groups are sent through different time-frequency resources.

[0049] Optionally, downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources.

[0050] Optionally, the downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups and the downlink reference signals sent by at least two antenna ports included in another antenna port group in the M antenna port groups are sent through different time-frequency resources.

[0051] Based on the above technical solution, during the transmission of the downlink reference signal, different antenna ports in any group of the M antenna ports can send the downlink reference signal through CJT, and antenna ports in different antenna port groups among the M antenna ports can send the downlink reference signal through NCJT, so that the transmission process of the N groups of downlink reference signals can obtain the joint gain of CJT and NCJT.

[0052] In a possible implementation of the second aspect, when the measurement result of the downlink reference signal includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device.

[0053] Based on the above technical solution, different antenna port groups in the M antenna port groups can communicate with the terminal device through NCJT. When the measurement results fed back by the terminal device include RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device, so that the network device can obtain downlink channel information that matches the number of receiving antenna ports of the terminal device based on the measurement results.

[0054] Optionally, the resources of the N groups of downlink reference signals configured by the configuration information include the port resources of the sending ports of the N groups of downlink reference signals. In other words, the configuration information may include the resource index and / or resource identifier of the port of the sending ports of the N groups of downlink reference signals.

[0055] In a possible implementation manner of the second aspect, the configuration information includes indication information indicating a correspondence between the transmission ports of the N groups of downlink reference signals and the M antenna port groups.

[0056] Based on the above technical solution, the configuration information sent by the network device may also include indication information indicating the correspondence between the sending ports of the N groups of downlink reference signals and the M antenna port groups, so that the terminal device can clearly communicate between different antenna ports in any group of the M antenna port groups through CJT based on the indication information, and clearly communicate between different antenna ports in the M antenna ports through NCJT based on the indication information.

[0057] Optionally, the indication information and the configuration information may be carried in different messages / information / signaling.

[0058] In a third aspect, the present application provides a communication device, which is a terminal device, or a component of a terminal device (such as a processor, chip, or chip system), or a logic module or software that can implement all or part of the terminal device functions. In the fifth aspect and its possible implementations, the communication device is described as being executed by a terminal device.

[0059] The device includes a transceiver unit and a processing unit. The transceiver unit is used to receive configuration information, where the configuration information is used to configure resources of N groups of downlink reference signals, where N is an integer greater than 1; at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in M ​​antenna port groups, where M is an integer less than or equal to N; wherein, any group in the N groups of downlink reference signals includes at least one downlink reference signal, and any group in the M antenna port groups includes at least two antenna ports, and different antenna ports in any one group in the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT; the terminal device receives downlink reference signals from the M antenna port groups based on the configuration information; the transceiver unit is also used to send first information, where the first information is used to indicate measurement results of the downlink reference signals of the M antenna port groups.

[0060] In a possible implementation manner of the third aspect, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs.

[0061] In a possible implementation manner of the third aspect, different groups of downlink reference signals in the N groups of downlink reference signals are sent through different beams.

[0062] In a possible implementation of the third aspect, downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources; and / or downlink reference signals sent by different antenna port groups in the M antenna port groups are sent through different time-frequency resources.

[0063] In a possible implementation manner of the third aspect, the downlink reference signal includes a CSI-RS, and the measurement result of the downlink reference signal includes at least one of an RI, a PMI, and a CQI.

[0064] In a possible implementation of the third aspect, when the measurement result of the downlink reference signal includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device.

[0065] In a possible implementation manner of the third aspect, the downlink reference signal of any one group in the M antenna port groups is a downlink reference signal of a different group in the N groups of downlink reference signals.

[0066] In a possible implementation manner of the third aspect, the configuration information further includes indication information indicating a correspondence between the N downlink reference signal transmission ports and the M antenna port groups.

[0067] In a possible implementation of the third aspect, different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, including: different antenna ports in any one of the M antenna port groups are used to transmit downlink data on the same time-frequency resources.

[0068] In a possible implementation of the third aspect, different antenna port groups among the M antenna port groups are used to transmit downlink data through NCJT, including: different antenna port groups among the M antenna port groups are used to transmit downlink data on different time-frequency resources.

[0069] In the third aspect of the present application, the constituent modules of the communication device can also be used to execute the steps performed in each possible implementation method of the first aspect and achieve corresponding technical effects. For details, please refer to the first aspect and will not be repeated here.

[0070] In a fourth aspect, the present application provides a communication device, which is a network device, or a component of a network device (such as a processor, chip, or chip system), or a logic module or software that can implement all or part of the network device functions. In the sixth aspect and its possible implementations, the communication device is described as being executed by a network device.

[0071] The device includes a transceiver unit and a processing unit, the processing unit is used to determine configuration information, the configuration information is used to configure resources of N groups of downlink reference signals, N is an integer greater than 1; at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in M ​​antenna port groups, M is an integer less than or equal to N; wherein, any group in the N groups of downlink reference signals includes at least one downlink reference signal, any group in the M antenna port groups includes at least two antenna ports, different antenna ports in any group in the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT; the terminal device receives the downlink reference signal from the M antenna port groups based on the configuration information; the transceiver unit is used to send the configuration information.

[0072] In a possible implementation manner of the fourth aspect, the transceiver unit is further used to receive first information, where the first information is used to indicate part or all of the measurement results of the downlink reference signals of the M antenna port groups.

[0073] In a possible implementation of the fourth aspect, the M antenna port groups include multiple antenna ports, and the processing unit is further used to determine the correspondence between the multiple antenna ports and the M antenna port groups based on second information; the second information includes at least one of the following: the transmission capability of each antenna port in the multiple antenna ports; the signal quality of the reference signals corresponding to the multiple antenna ports, wherein the signal quality difference of the reference signals corresponding to the same antenna port group in the M antenna port groups is lower than a threshold; receiving space information of the reference signals corresponding to the multiple antenna ports, wherein the receiving space includes multiple subspaces, and each antenna port of the same antenna port group in the M antenna port groups corresponds to the same subspace; ABF IDs corresponding to the multiple antenna ports, wherein each antenna port of the same antenna port group in the M antenna port groups corresponds to the same ABF ID.

[0074] In a possible implementation manner of the fourth aspect, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs.

[0075] In a possible implementation manner of the fourth aspect, different groups of downlink reference signals in the N groups of downlink reference signals are sent through different beams.

[0076] In a possible implementation of the fourth aspect, the downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources; and / or, the downlink reference signals sent by different antenna port groups in the M antenna port groups are sent through different time-frequency resources.

[0077] In a possible implementation manner of the fourth aspect, the downlink reference signal includes a CSI-RS, and the measurement result of the downlink reference signal includes at least one of an RI, a PMI, and a CQI.

[0078] In a possible implementation of the fourth aspect, when the measurement result of the downlink reference signal includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device.

[0079] In a possible implementation manner of the fourth aspect, the downlink reference signal of any one group in the M antenna port groups is a downlink reference signal of a different group in the N groups of downlink reference signals.

[0080] In a possible implementation manner of the fourth aspect, the configuration information further includes indication information indicating a correspondence between the N downlink reference signal transmission ports and the M antenna port groups.

[0081] In a possible implementation of the fourth aspect, different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, including: different antenna ports in any one of the M antenna port groups are used to transmit downlink data on the same time-frequency resources.

[0082] In a possible implementation of the fourth aspect, different antenna port groups among the M antenna port groups are used to transmit downlink data through NCJT, including: different antenna port groups among the M antenna port groups are used to transmit downlink data on different time-frequency resources.

[0083] In the fourth aspect of the present application, the constituent modules of the communication device can also be used to execute the steps performed in each possible implementation method of the second aspect and achieve corresponding technical effects. For details, please refer to the second aspect and will not be repeated here.

[0084] In a fifth aspect, the present application provides a communication device, comprising at least one processor, wherein the at least one processor is coupled to a memory; the memory is used to store programs or instructions; the at least one processor is used to execute the program or instructions so that the device implements the method described in any possible implementation method of any one of the first to second aspects.

[0085] In a sixth aspect, an embodiment of the present application provides a communication device, comprising at least one logic circuit and an input / output interface; the logic circuit is used to execute the method described in any possible implementation method of any one of the first to second aspects above.

[0086] A seventh aspect of an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and network device.

[0087] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method described in any possible implementation of any one of the first to second aspects above.

[0088] A ninth aspect of the embodiments of the present application provides a computer program product (or computer program). When the computer program in the computer program product is executed by the processor, the processor executes the method described in any possible implementation of any one of the first to second aspects above.

[0089] In a tenth aspect, an embodiment of the present application provides a chip system, which includes at least one processor for supporting a communication device to implement the method described in any possible implementation method of any one of the first to second aspects above.

[0090] In one possible design, the chip system may further include a memory for storing program instructions and data necessary for the communication device. The chip system may be composed of a chip or may include a chip and other discrete components. Optionally, the chip system may further include an interface circuit for providing program instructions and / or data to the at least one processor.

[0091] Among them, the technical effects brought about by any design method in the third to tenth aspects can refer to the technical effects brought about by the different design methods in the above-mentioned first to second aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] FIG1a is a schematic diagram of a signal transmission method involved in this application;

[0093] FIG1b is another schematic diagram of the signal transmission method involved in this application;

[0094] FIG1c is another schematic diagram of the signal transmission method involved in this application;

[0095] FIG2 is a schematic diagram of a communication system involved in this application;

[0096] FIG3a is a schematic diagram of the communication process involved in this application;

[0097] FIG3 b is a schematic diagram of a communication scenario involved in this application;

[0098] FIG4 is a schematic diagram of a method for configuring reference signal resources provided in this application;

[0099] FIG5 is another schematic diagram of a method for configuring reference signal resources provided in this application;

[0100] FIG6a is a schematic diagram of an application example of the method for configuring reference signal resources provided in this application;

[0101] FIG6 b is another schematic diagram of an application example of the method for configuring reference signal resources provided in this application;

[0102] FIG7 is a schematic diagram of a communication device provided by the present application;

[0103] FIG8 is another schematic diagram of a communication device provided by the present application;

[0104] FIG9 is another schematic diagram of a communication device provided by the present application;

[0105] FIG10 is another schematic diagram of the communication device provided in this application. DETAILED DESCRIPTION

[0106] First, some of the terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0107] (1) Configuration and pre-configuration: In this application, configuration and pre-configuration will be used at the same time. Configuration refers to the network equipment such as base stations or servers sending some parameter configuration information or parameter values ​​to the terminal through messages or signaling, so that the terminal can determine the communication parameters or resources during transmission based on these values ​​or information. Pre-configuration is similar to configuration. It can be a way for network equipment such as base stations or servers to send parameter information or values ​​to the terminal through a communication link or carrier; it can also be a way to give the definition of corresponding parameters or parameter values ​​in the standard, or by setting the relevant parameters or values ​​in the terminal device in advance. This application does not limit this. Furthermore, these values ​​and parameters can be changed or updated.

[0108] (2) In this application, “used for indication” can include direct indication and indirect indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0109] In this application, the information indicated by the indication information is referred to as the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, it can be implemented by direct indication, such as by indicating the information to be indicated itself or the index of the information to be indicated. It can also be implemented by indirectly indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved with the help of the arrangement order of each information agreed in advance (for example, stipulated in the protocol), thereby reducing the indication overhead to a certain extent.

[0110] The information to be indicated can be sent as a whole, or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in this application. Among them, the sending period and / or sending time of these sub-information can be pre-defined, for example, pre-defined according to the protocol, or configured by the transmitting device by sending configuration information to the receiving device. Among them, the configuration information can, for example, but not limited to, include one or a combination of at least two of radio resource control (RRC) signaling, media access control (MAC) layer signaling and physical layer signaling. Among them, MAC layer signaling, for example, includes MAC control element (CE); physical layer signaling, for example, includes downlink control information (DCI).

[0111] (3) Reference signal (RS). In a communication system, it is necessary to estimate the uplink or downlink channel in order to send and receive data, obtain system synchronization, and feedback channel information. Channel estimation refers to the process of reconstructing or recovering the received signal in order to compensate for the signal distortion caused by channel fading and noise fading. It uses reference signals known in advance by the transmitter and receiver to track the time and frequency domain changes of the channel. The above-mentioned reference signals are also called reference signals. They are distributed on different resource elements (REs) in the two-dimensional time-frequency space within the orthogonal frequency division multiplexing (OFDM) symbol and have known amplitude and phase.

[0112] (4) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. In addition, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects.

[0113] (5) “Sending” and “receiving” in the embodiments of the present application indicate the direction of signal transmission. For example, “sending information to device X” can be understood as the destination of the information being device X, which can include direct sending through the air interface, as well as indirect sending through the air interface by other units or modules. “Receiving information from device Y” can be understood as the source of the information being device Y, which can include direct receiving from device Y through the air interface, as well as indirect receiving from device Y through the air interface from other units or modules. “Sending” can also be understood as the “output” of the chip interface, and “receiving” can also be understood as the “input” of the chip interface.

[0114] For example, let's take the communication process between entity A and entity B as an example. In this application, when entity A sends information to entity B, it can be A sending it directly to B, or A sending it to B indirectly through another entity. Similarly, when entity B receives information from entity A, it can be entity B receiving the information sent by entity A directly, or entity B receiving the information sent by entity A indirectly through another entity. Entities A and B here can be RAN nodes or terminals, or modules within a RAN node or terminal. The sending and receiving of information can be information exchange between a RAN node and a terminal, for example, information exchange between a base station and a terminal; the sending and receiving of information can also be information exchange between two RAN nodes, for example, information exchange between a CU and a DU; the sending and receiving of information can also be information exchange between different modules within a device, for example, information exchange between a terminal chip and other modules of the terminal, or information exchange between a base station chip and other modules in the base station.

[0115] (6) Precoding technology: When the channel state is known, the transmitter can process the signal to be transmitted with the help of a precoding matrix that matches the channel and then transmit it, so that the precoded signal is adapted to the channel. Therefore, compared with the process of the receiver receiving the non-precoded signal and eliminating the influence between channels, the complexity of the process of the receiver receiving the precoded signal and eliminating the influence between channels is reduced. Therefore, by precoding the signal to be transmitted, the quality of the received signal (such as signal to interference plus noise ratio (SINR)) can be improved. The use of precoding technology can also realize the transmission of the transmitter and multiple receivers on the same time-frequency resources, that is, multiple user multiple input multiple output (MU-MIMO) is realized.

[0116] Optionally, the sending end may be a network device, and the receiving end may be a terminal device; or, the sending end may be a terminal device, and the receiving end may be a terminal device.

[0117] It should be understood that the description of the relevant precoding technology is merely an example for ease of understanding and is not intended to limit the scope of protection of the embodiments of this application. During the specific implementation process, the transmitting end may also perform precoding in other ways. For example, when channel information (such as, but not limited to, the channel matrix) is not available, a pre-set precoding matrix or weighted processing method may be used for precoding. For the sake of brevity, the specific details are not repeated here.

[0118] (7) Precoding matrix indication (PMI): can be used to indicate the precoding matrix. The precoding matrix can be, for example, a precoding matrix determined by the terminal device based on the channel matrix of a frequency domain unit. The channel matrix can be determined by the terminal device through channel estimation or based on channel reciprocity. However, it should be understood that the specific method for the terminal device to determine the precoding matrix is ​​not limited to the above description. The specific implementation method can refer to the existing technology. For the sake of brevity, it is not listed here one by one.

[0119] For example, the precoding matrix can be obtained by performing singular value decomposition (SVD) on the channel matrix or the covariance matrix of the channel matrix, or by performing eigenvalue decomposition (EVD) on the covariance matrix of the channel matrix. It should be understood that the methods for determining the precoding matrix listed above are only examples and should not constitute any limitation to this application. The methods for determining the precoding matrix can refer to the prior art and are not listed here for the sake of brevity.

[0120] It should be noted that, according to the method provided in the embodiment of the present application, the network device can determine the CSI RS port, frequency domain DFT vector, and the merging coefficient of the space-frequency vector used to construct the precoding vector based on the feedback of the terminal device, and then determine the precoding matrix corresponding to each frequency domain unit. The precoding matrix can be used directly for downlink data transmission; or it can be subjected to some beamforming methods, such as zero forcing (ZF), regularized zero-forcing (RZF), minimum mean-squared error (MMSE), maximization of signal-to-leakage-and-noise (SLNR), etc., to obtain the precoding matrix ultimately used for downlink data transmission. This application is not limited to this. Unless otherwise specified, the precoding matrix involved below may refer to the precoding matrix determined based on the method provided in this application.

[0121] It is understood that the precoding matrix determined by the terminal device can be understood as the precoding matrix to be fed back. The terminal device can indicate the precoding matrix to be fed back through the PMI, so that the network device can recover the precoding matrix based on the PMI. It is understood that the precoding matrix recovered by the network device based on the PMI can be the same as or similar to the precoding matrix to be fed back.

[0122] In downlink channel measurement, the higher the approximation between the precoding matrix determined by the network device based on the PMI and the precoding matrix determined by the terminal device, the more the precoding matrix determined by the network device for data transmission can be adapted to the channel state, thereby improving the signal reception quality.

[0123] (8) Antenna port: This can be referred to as a port. It can be understood as a transmitting antenna identified by the receiving end, or a transmitting antenna that can be distinguished in space. An antenna port can be pre-configured for each virtual antenna. Each virtual antenna can be a weighted combination of multiple physical antennas. Each antenna port can correspond to a reference signal. Therefore, each antenna port can be called a reference signal port, such as a CSI-RS port, a demodulation reference signal (DMRS), an SRS port, etc.

[0124] (9) Spatial layer: In MIMO, a spatial layer can be viewed as an independently transmittable data stream. To improve the utilization of spectrum resources and enhance the data transmission capacity of the communication system, network devices can transmit data to terminal devices through multiple spatial layers.

[0125] The number of spatial layers is also the rank of the channel matrix. The terminal device can determine the number of spatial layers based on the channel matrix obtained by channel estimation. The precoding matrix can be determined based on the channel matrix. For example, the precoding matrix can be determined by performing SVD on the channel matrix or the covariance matrix of the channel matrix. During the SVD process, different spatial layers can be distinguished according to the size of the eigenvalues. For example, the precoding vector determined by the eigenvector corresponding to the largest eigenvalue can be associated with the first spatial layer, and the precoding vector determined by the eigenvector corresponding to the smallest eigenvalue can be associated with the Rth spatial layer. That is, the eigenvalues ​​corresponding to the first spatial layer to the Rth spatial layer decrease in sequence. Simply put, the strength of the R spatial layers decreases in sequence from the first spatial layer to the Rth spatial layer.

[0126] It should be understood that distinguishing different spatial layers based on characteristic values ​​is only one possible implementation method and should not constitute any limitation to this application. For example, the protocol may also predefine other criteria for distinguishing spatial layers, which is not limited in this application.

[0127] (10) Channel State Information (CSI) Report: In a wireless communication system, information describing the channel properties of a communication link reported by a receiving end (such as a terminal device) to a transmitting end (such as a network device). The CSI report may include, but is not limited to, precoding matrix indication (PMI), rank indication (RI), channel quality indication (CQI), channel state information reference signal (CSI-RS), CSI-RS resource indicator (CSI-RS resource indicator, CRI) and layer indicator (LI). It should be understood that the specific contents of the CSI listed above are only exemplary and should not constitute any limitation to this application. CSI may include one or more of the above-listed items, and may also include other information used to characterize CSI in addition to the above-listed items, which is not limited in this application.

[0128] (11) Multi-point coordinated transmission: During downlink transmission, a terminal device can communicate with at least one network device, that is, the terminal device can receive data from multiple network devices. This transmission mode is called coordinated multiple points (CoMP) transmission / reception. Among them, at least one network device forms a collaborative set to provide services for the terminal device. The network devices in the collaborative set can each be connected to a different control node (for example, the control node can be a BBU, CU node, etc.), and each control node can exchange information, such as exchanging scheduling strategy information to achieve the purpose of collaborative transmission. Alternatively, the network devices in the collaborative set are connected to the same control node, which receives channel state-related information (such as channel state information (CSI) or reference signal receiving power (RSRP)) reported by the terminal devices collected by the network devices in the collaborative set, and uniformly schedules the terminal devices in the collaborative set based on the channel state-related information of the terminal devices in the collaborative set, and then exchanges the scheduling strategy to the network devices connected to it.

[0129] As can be seen from the above definition, in a collaborative set, a terminal can have one or more transmit TRPs. Moreover, when the terminal has one transmit TRP, the transmit TRP of the terminal is the serving TRP of the terminal. When the terminal has multiple transmit TRPs, one of the multiple transmit TRPs of the terminal (for example, the transmit TRP corresponding to the optimal RSRP) is the serving TRP of the terminal, and the other TRPs are the collaborative TRPs of the terminal.

[0130] (12) Beam. Beams and beam pair links (BPLs) are introduced into communication systems. A beam is a communication resource. Beams can be divided into transmit beams and receive beams. Beam formation can be achieved through beamforming or other techniques. Beamforming includes transmit beamforming and receive beamforming.

[0131] Transmit beam: The transmitting device transmits signals with certain beamforming weights, forming a spatially directional beam. In the uplink direction, the transmitting device can be a terminal; in the downlink direction, the transmitting device can be a network device.

[0132] Receive beam: The receiving device receives signals using certain beamforming weights, forming a spatially directional beam. In the uplink direction, the receiving device can be a network device; in the downlink direction, the receiving device can be a terminal.

[0133] Transmit beamforming: When a transmitting device with an antenna array transmits a signal, it sets a specific amplitude and phase on each antenna element in the array. This gives the transmitted signal a certain spatial directionality, meaning that the signal power is high in some directions and low in others. The direction with the highest signal power defines the direction of the transmit beam. The antenna array consists of multiple antenna elements, and the specific amplitude and phase values ​​assigned to them are the beamforming weights.

[0134] Receive beamforming: When a receiving device with an antenna array receives a signal, it sets a specific amplitude and phase on each antenna element in the array. This ensures that the power gain of the received signal is directional. Specifically, the power gain is high when receiving signals from certain directions, and low when receiving signals from other directions. The direction with the highest power gain is the direction of the receive beam. The antenna array consists of multiple antenna elements, and the specific amplitude and phase values ​​assigned to them are the beamforming weights.

[0135] Optionally, using a certain transmit beam to send a signal can be understood as using a certain beamforming weight to send a signal.

[0136] Optionally, using a receive beam to receive a signal may be understood as using a certain beamforming weight to receive a signal.

[0137] Generally speaking, different beams can be considered different resources. Using (or passing) different beams can transmit the same information or different information. Beam pairs are based on the concept of beams. A beam pair typically consists of a transmit beam from a transmitting device and a receive beam from a receiving device.

[0138] The following will take the network device as an example of a base station, and combine the implementation content shown in Figures 1a to 1c to illustrate the implementation process of the beam. Generally speaking, in higher frequency band communication systems, base stations (and terminals in some frequency bands) usually use large-scale array antennas (for example, from 500 to more than 1000 antenna units) to counteract the path loss caused by the increase in frequency band through higher array gain, thereby improving coverage capabilities. From the perspective of base station implementation, even if it is a large array, the array weighting method (i.e., beamforming method) used in different frequency bands and different array sizes is different. According to the implementation scheme of beamforming, it can be roughly divided into the following three categories.

[0139] One implementation is digital beamforming (DBF), whose basic structure is shown in Figure 1a. Each antenna element or group of antenna elements is directly connected to a digital channel. This structure is typical of low-frequency massive multiple-input multiple-output (MIMO) systems. Because each antenna signal is directly converted to the digital domain, and subsequent array weighting is performed in the digital domain, it is called digital beamforming. The digital domain offers the highest degree of freedom for signal processing and can support very complex signal processing methods. Therefore, for a given array size, the DBF architecture offers the best performance. On the other hand, due to the high power consumption and cost of digital-to-analog converters (DACs) and analog-to-digital converters (ADCs), especially at large bandwidths, DBF generally has the highest cost for a given array size.

[0140] Another implementation is analog beamforming (ABF), whose structure is shown in Figure 1b. Each antenna element or group of antenna elements is connected to an analog phase shifter. Multiple antenna elements are then combined in the analog domain and passed through a digital-to-analog / analog-to-digital converter. Compared to DBF, ABF only requires one digital-to-analog / analog-to-digital converter for the entire array, making its greatest advantage in cost and power consumption. ABF also has significant bottlenecks. The phase shifter settings in the analog domain determine the beam direction after beamforming. Since signals are directly combined electronically in the analog domain, digital signal processing weighting cannot be used like DBF. ABF requires pre-configured phase shifter settings (directing the analog beam toward the target terminal) during transmission and reception. This process requires beam scanning during the link establishment phase, which introduces additional latency. Generally, if the analog beam is obstructed or moved, causing misalignment, the system link quality will rapidly degrade, even to the point of loss. Therefore, ABF's communication reliability is inferior to DBF.

[0141] Another implementation is hybrid beamforming (HBF), whose structure is shown in Figure 1c. It is an intermediate form between ABF and DBF. The figure illustrates a three-channel HBF architecture with two analog phase shifters per channel. HBF has a certain number of digital ports to support digital beamforming, and each digital port drives an ABF subarray. Compared to ABF, for the same array size, each digital channel drives a smaller analog subarray (four in Figure 1c vs. six in Figure 1b), resulting in wider beams, improved reliability, and reduced beam scanning overhead. Generally, the ratio of digital ports to analog phase shifters in HBF varies with frequency and system design requirements. For example, high-frequency bands have a small number of digital ports (4 to 16), with a higher number of analog phase shifters per digital channel (16 to 32), closer to ABF. Low-frequency band systems, on the other hand, have more digital ports (32 to 128) and fewer analog phase shifters per digital channel (e.g., 2 to 10).

[0142] Please refer to Figure 2, which is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. As shown in Figure 2, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The RAN 100 includes at least one RAN node (such as 110a and 110b in Figure 2, collectively referred to as 110), and may also include at least one terminal (such as 120a-120j in Figure 2, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 2). The terminal 120 is connected to the RAN node 110 via a wireless connection, and the RAN node 110 is connected to the core network 200 via a wireless or wired connection. The core network device in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or they may be the same physical device that integrates the logical functions of the core network device and the logical functions of the RAN node. Terminals and RAN nodes may be connected to each other via wired or wireless means.

[0143] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, or a future radio access system defined in the 3rd Generation Partnership Project (3GPP). RAN100 may also include two or more of the aforementioned different radio access systems. RAN100 may also be an open RAN (O-RAN).

[0144] A RAN node, also known as a radio access network device, RAN entity, or access node, facilitates wireless access to a communication system by a terminal. In one application scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a fifth-generation (5G) mobile communication system, a next-generation base station in a sixth-generation (6G) mobile communication system, or a base station in a future mobile communication system. A RAN node can be a macro base station (such as 110a in Figure 2), a micro base station, an indoor station (such as 110b in Figure 2), a relay node, or a donor node.

[0145] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing portions of the base station's functions. For example, a RAN node can be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU implements the base station's radio resource control protocol and packet data convergence protocol (PDCP) functions, as well as the service data adaptation protocol (SDAP) functions. The DU implements the base station's radio link control layer and medium access control (MAC) layer functions, as well as some or all of the physical layer functions. For detailed descriptions of each of the above protocol layers, please refer to the relevant 3GPP technical specifications. The RU can be used to implement the transmission and reception of radio frequency signals. The CU and DU can be two independent RAN nodes, or they can be integrated into the same RAN node, such as in a baseband unit (BBU). The RU can be included in radio frequency equipment, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0146] In different systems, RAN nodes may have different names. For example, in an O-RAN system, a CU may be called an open CU (O-CU), a DU may be called an open DU (O-DU), and a RU may be called an open RU (O-RU). The RAN node in the embodiments of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node may be a server loaded with the corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form adopted by the RAN node. For ease of description, the following description takes a base station as an example of a RAN node.

[0147] A terminal is a device with wireless transceiver capabilities that can send signals to a base station or receive signals from a base station. A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. A terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by the terminal.

[0148] Base stations and terminals can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0149] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 2 can be configured as a mobile base station. To terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station. However, to base station 110a, 120i is a terminal, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 2 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 2 can be referred to as communication devices with terminal functionality.

[0150] Communication between base stations and terminals, between base stations, and between terminals can be carried out through authorized spectrum, unauthorized spectrum, or both; communication can be carried out through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0151] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem that includes the base station functions. The control subsystem that includes the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or modem) in the terminal, or by a device that includes the terminal functions.

[0152] In wireless communication systems (such as the one shown in Figure 2), MIMO technology, as a key technology for wireless communication, can be used to meet high-speed transmission requirements. For example, during communication between a network device and a terminal device, the network device uses a reference signal to perform channel measurement to obtain channel state information (CSI). The network device then uses this channel information to calculate precoding information between the network device and the terminal device. This precoding information is then used to implement MIMO communication between the network device and the terminal device.

[0153] The following description uses the network device as a base station and the terminal device as a UE as an example, and the process of the UE reporting CSI to the base station can be shown in Figure 3a. It should be understood that Figure 3a is only an example of the base station obtaining CSI.

[0154] In FIG3a , the process of the UE reporting CSI to the base station includes the following steps:

[0155] Step 1. The base station sends channel measurement configuration information.

[0156] Step 2. The base station sends a reference signal (RS) for channel measurement.

[0157] Step 3. The UE performs measurement based on the RS to obtain a measurement result, and feeds back a CSI report indicating the measurement result to the base station (for example, the CSI report is carried in the UCI). For example, the CSI report includes one or more of PMI, CQI, RI, etc.

[0158] Step 4. The base station sends data according to the CSI report fed back by the UE.

[0159] In step 4, the base station can determine the number of spatial layers for transmitting data to the UE based on the RI in the CSI fed back by the UE in step 3; and, the base station can determine the modulation order and channel coding code rate for transmitting data to the UE based on the CQI in the CSI report fed back by the UE in step 3; and, the base station can determine the precoding for transmitting data to the UE based on the PMI in the CSI report fed back by the UE in step 3.

[0160] Step 5: The base station sends DCI, and the UE receives and demodulates downlink data based on the received DCI.

[0161] Currently, MIMO technology is a communication technology used to enhance user experience. The application of MIMO technology can also increase the average capacity of a cell. In a MIMO system, to ensure a higher user experience, the deployment of network equipment may be gradually encrypted. However, in a MIMO system, the signals sent by different network devices to different terminal devices may cause increased interference as the deployment of network devices becomes more encrypted. For example, taking the network device as a TRP, when a terminal device communicates with a certain TRP, the signals of other TRPs will be regarded as interference signals. Accordingly, as the deployment of TRPs becomes increasingly encrypted, the possibility of terminal devices being interfered with during communication will gradually increase.

[0162] Therefore, how to increase capacity and reduce interference is a technical problem that needs to be solved urgently.

[0163] In one possible implementation, different network devices can achieve interference reduction through collaboration. For example, different base stations can be called different TRPs. Taking the scenario shown in Figure 3b as an example, TRP1, TRP2 and TRP3 can communicate with the same terminal device through collaboration. For example, different TRPs can collaborate through NCJT, where different TRPs can send different data to the same terminal device to obtain spatial diversity gain. For another example, different TRPs can collaborate through CJT, where different TRPs can send the same data to the same terminal device, and the interference between different TRPs can be converted into the communication signal (i.e., useful signal) of the terminal device to obtain interference reduction gain. However, in the current implementation of NCJT, multiple TRPs are required to send different data streams, and the joint interference suppression capability between multiple TRPs is not fully utilized; in the current implementation of CJT, multiple TRPs jointly perform scheduling, time-frequency domain resource allocation, and joint weight calculation, which has a high implementation complexity. The performance is greatly affected by calibration accuracy, measurement accuracy, and non-ideal factors of transmission networking, and the performance that can be obtained in practice is also relatively limited.

[0164] In order to solve the above problems, the present application provides a method for configuring reference signal resources and related equipment, which are used to obtain spatial diversity gain through NCJT transmission between different antenna ports in the same antenna port group and between different antenna port groups in different antenna port groups in M ​​antenna port groups (also referred to as antenna port sets). At the same time, the interference between different antenna ports in the same antenna port group and between different antenna port groups can be converted into communication signals (i.e., useful signals) of terminal devices, thereby reducing interference through CJT and NCJT to improve communication efficiency. The following will be described in detail with reference to the accompanying drawings.

[0165] Please refer to FIG4 , which is a schematic diagram of a method for configuring reference signal resources provided in this application. The method includes the following steps.

[0166] It should be noted that, in FIG4 , the method is illustrated by taking the terminal device and the network device as the execution subjects of the interaction diagram as an example, but the present application does not limit the execution subjects of the interaction diagram. For example, the terminal device that executes S401-S403 in FIG4 and the corresponding implementation method can be the terminal device, or it can be a chip, chip system, or processor that supports the terminal device to implement the method, or it can be a logic module or software that can realize all or part of the functions of the terminal device. The network device that executes S401-S403 in FIG4 and the corresponding implementation method can be the network device, or it can be a chip, chip system, or processor that supports the network device to implement the method, and it can also be replaced by a logic module or software that can realize all or part of the functions of the network device. Similarly, in the implementation process shown in Figure 5 below, it can be executed by the terminal device (as well as the network device where the service TRP is located and the network device where the collaborative TRP is located), or it can be implemented by a chip, chip system, or processor that supports the terminal device (as well as the network device where the service TRP is located and the network device where the collaborative TRP is located) to implement the method, or it can be a logical module or software that can implement all or part of the functions of the terminal device (as well as the network device where the service TRP is located and the network device where the collaborative TRP is located).

[0167] S401. The network device sends configuration information, and the terminal device receives the configuration information accordingly.

[0168] In step S401, the configuration information is used to configure resources for N groups of downlink reference signals, where N is an integer greater than 1; wherein each group of downlink reference signals includes at least one reference signal. At least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in M ​​antenna port groups, where M is a positive integer less than or equal to N; wherein each antenna port group includes at least two antenna ports. Different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT. In other words, in the M antenna port groups, each antenna port group is used to send at least one group of downlink reference signals in the N groups of downlink reference signals.

[0169] It should be understood that the configuration information may include configuration information of the sending resources of N groups of downlink reference signals, and configuration information of the reporting resources of N groups of downlink reference signals. Among them, the configuration information of the sending resources can be used to configure the antenna port resources for the network device to send the downlink reference signal in step S402, such as the port information (such as port identifier, port index, etc.) of multiple antenna ports for sending N groups of downlink reference signals. In addition, the configuration information of the sending resources can also be used to configure one or more of the time domain resources, frequency domain resources, and resource periods of the N groups of downlink reference signals. The configuration information of the reporting resources can also be used to configure the resources for the terminal device to send the first information in step S403, including one or more of the time domain resources, frequency domain resources, resource periods, reporting indicators, and reporting formats.

[0170] In addition, the antenna ports included in the M antenna port groups are antenna ports for sending N groups of downlink reference signals. The M antenna port groups include multiple antenna ports, and the configuration information in step S401 may further include indication information indicating the correspondence between the multiple antenna ports and the M antenna port groups. Thus, the terminal device can determine, based on the indication information, that different antenna ports in any one of the M antenna port groups communicate via CJT, and determine, based on the indication information, that different antenna port groups in the M antenna port groups communicate via NCJT.

[0171] Optionally, the indication information is not included in the configuration information, or the indication information and the configuration information may be carried in the same or different messages / information / signaling.

[0172] Optionally, the terminal device may obtain the correspondence between the multiple antenna ports and the M antenna port groups in a preconfigured manner / predefined manner. For example, the location of the network device is generally relatively fixed, and one or more network devices in the same geographical area may be used to send N groups of downlink reference signals, and the multiple antenna ports used to send N groups of downlink reference signals may form M antenna port groups. In other words, for different geographical areas, the antenna ports of one or more network devices located in each geographical area may form different M antenna port groups, that is, the terminal device may obtain the correspondence between the multiple antenna ports of one or more network devices located in the geographical area and the M antenna port groups based on the geographical area (or the identifier of the geographical area) where the terminal device is located. To this end, for the terminal device, P correspondences between the multiple antenna ports of network devices in P (P is a positive integer) geographical areas and the M antenna port groups may be determined in a preconfigured manner or a predefined manner. Accordingly, the terminal device can determine the correspondence between the multiple antenna ports and the M antenna port groups by its own positioning information (or the positioning information of the network device indicated by the broadcast information received from the network device) and one of the P correspondences. In this way, the overhead of configuration information can be reduced, thereby improving communication efficiency.

[0173] In the present application, the downlink reference signal may include a channel state information reference signal (CSI-RS), a synchronization signal / physical broadcast channel block (SS / PBCH block or SSB), etc.

[0174] Exemplarily, taking the downlink reference signal as CSI-RS as an example, the CSI-RS configuration information received by the terminal device can be used to configure the resources of the CSI-RS through the resource configuration (resourceConfig), resource set (resourceSet) and resource (resource) in the RRC message. Generally, a resourceConfig can include one or more resourceSets, and a resourceSet can include one or more resources. In the above technical solution, the configuration information is used to configure the resources of N groups of downlink reference signals, and the resources of the N groups of downlink reference signals can be CSI-RS resources configured by N resourceConfigs, or, the resources of the N groups of downlink reference signals can be CSI-RS resources configured by N resourceSets, or, the resources of the N groups of downlink reference signals can be CSI-RS resources configured by N resources, and there is no limitation here. In addition, each resourceConfig (or each resourceSet, or each resource) can be used to configure a group of CSI-RS, and each group of CSI-RS can include one or more CSI-RS. Accordingly, in the N groups of downlink reference signals, each group of downlink reference signals can include one or more downlink reference signals. Optionally, in a case where each group of downlink reference signals includes one downlink reference signal, the N groups of downlink reference signals may also be replaced by N downlink reference signals.

[0175] It should be understood that the configuration information in S401 is used to configure the resources of N groups of downlink reference signals. For example, one of the N groups of downlink reference signals may be sent through one antenna port group of the M antenna port groups, and another group of downlink reference signals in the N groups of downlink reference signals may be sent through another antenna port group of the M antenna port groups. In other words, the N groups of downlink reference signals may be sent through M antenna port groups, and any one of the M antenna port groups is used to send one or more groups of downlink reference signals in the N groups of downlink reference signals, or in other words, different antenna port groups in the M antenna port groups are respectively used to send different groups of downlink reference signals in the N groups of downlink reference signals. That is, the transmission ports of the N groups of downlink reference signals are located in the M antenna port groups.

[0176] Optionally, different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, including: at least two antenna ports contained in any one of the M antenna port groups are used to transmit downlink data on the same time-frequency resources.

[0177] Optionally, different antenna port groups among the M antenna port groups are used to transmit downlink data through NCJT, including: different antenna port groups among the M antenna port groups are used to transmit different downlink data on different time-frequency resources.

[0178] S402. The network device sends a downlink reference signal. Accordingly, the terminal device receives the downlink reference signal. The network device sends N groups of downlink reference signals via the M antenna port groups based on the configuration information in step S401. As can be seen from the description of the configuration information above, in step S402, the network device sends N groups of downlink reference signals via each of the M antenna port groups, thereby implementing the process of sending N groups of downlink reference signals via the M antenna port groups.

[0179] It should be understood that the M antenna port groups can be located in one or more network devices. The implementation process shown in FIG4 takes the M antenna port groups located in the same network device as an example. Where the M antenna ports are located in multiple network devices, that is, each network device can include one or more antenna port groups from the M antenna port groups; accordingly, in step S402, the multiple network devices can obtain configuration information of their respective antenna port groups through a scheduling process of one of the network devices or a negotiation process between the multiple network devices, and the multiple network devices transmit partial downlink reference signals of the N groups of downlink reference signals through their respective antenna port groups.

[0180] S403. The terminal device sends first information. Correspondingly, the network device receives the first information. The first information is used to indicate a measurement result of a downlink reference signal received through the M antenna port groups.

[0181] It should be noted that after the network device receives the first information, the network device can determine the downlink channel information between the network device and the terminal device based on the measurement result, and subsequently can send downlink data to the terminal device based on the downlink channel information. The implementation process can refer to the implementation process shown in Figure 3a above.

[0182] In one possible implementation, the downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources; and / or, the downlink reference signals sent by different antenna port groups in the M antenna port groups are sent through different time-frequency resources.

[0183] Optionally, downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources.

[0184] Optionally, the downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups and the downlink reference signals sent by at least two antenna ports included in another antenna port group in the M antenna port groups are sent through different time-frequency resources.

[0185] Specifically, during the transmission of the downlink reference signal in step S402, different antenna ports in any group of the M antenna ports can be used to transmit the downlink reference signal through CJT, and antenna ports in different antenna port groups among the M antenna ports can be used to transmit the downlink reference signal through NCJT, so that the transmission process of the N groups of downlink reference signals can obtain the joint gain of CJT and NCJT.

[0186] In one possible implementation, as shown in step S402 of Figure 4, the downlink reference signals of the M antenna port groups may come from the same network device. Accordingly, in step S403, the terminal device may send first information to the network device to indicate the measurement results of the downlink reference signals of the M antenna port groups.

[0187] In another possible implementation, the downlink reference signals of the M antenna port groups may come from different network devices, as shown in FIG5 . The implementation process of step S501 shown in FIG5 may refer to the implementation process of step S401 shown in FIG4 , step S402 shown in FIG4 may be implemented by steps S502a and S502b shown in FIG5 , and step S403 shown in FIG4 may be implemented by steps S503a and S503b shown in FIG5 .

[0188] As shown in Figure 5, the above-mentioned different network devices may include a network device where the service TRP is located, and a network device where the collaborative TRP is located. Among them, the terminal device may receive downlink reference signals of a part of the antenna port groups among the M antenna port groups of the network device where the service TRP is located in step S502a, and the terminal device may also receive downlink reference signals of the other part of the antenna port groups among the M antenna port groups of the network device where the collaborative TRP is located in step S502b. Accordingly, the terminal device may send a part of the first information (used to indicate the measurement results of the downlink reference signals of a part of the antenna port groups among the M antenna port groups) to the network device where the service TRP is located in step S503a, and the terminal device may send the other part of the first information (used to indicate the measurement results of the downlink reference signals of the other part of the antenna port groups among the M antenna port groups) to the network device where the collaborative TRP is located in step S503b.

[0189] It should be understood that in the implementation process shown in Figure 5, there may be one or more collaborative TRPs. Accordingly, one or more collaborative TRPs may be located in the same network device or in different network devices. Figure 5 only describes the one or more collaborative TRPs located in the same network device as an example.

[0190] Optionally, in Figure 5, the terminal device may also send the first information to one of the different network devices (for example, the network device where the service TRP is located). This network device is called a serving network device, and the serving network device subsequently sends the corresponding measurement results to other network devices respectively, so that different network devices can determine the downlink channel information of each network device and the terminal device based on the received measurement results. Alternatively, after the serving network device subsequently determines the downlink channel information of each different network device and the terminal device based on the measurement results indicated by the first information, it sends the downlink channel information of each network device and the terminal device to each different network device.

[0191] In the implementation process shown in FIG4 or FIG5, the N groups of downlink reference signals received by the terminal device may be sent in a variety of ways, which will be exemplarily described below in conjunction with the implementation process shown in FIG6a and FIG6b.

[0192] In a first implementation mode, among N groups of downlink reference signals received by a terminal device, different groups of downlink reference signals are respectively sent through N transmission reception points (TRPs).

[0193] Specifically, in implementation method one, N groups of downlink reference signals are respectively sent through N TRPs. For example, the N groups of downlink reference signals correspond one-to-one to the N TRPs. In other words, the antenna ports of one or more TRPs in the N TRPs can constitute one of the antenna port groups in the M antenna port groups, and the antenna ports of one or more other TRPs in the N TRPs can constitute another antenna port group in the M antenna port groups; and so on, the antenna ports of the N TRPs can constitute M antenna port groups. Among them, the antenna ports in each antenna port group in the M antenna ports can communicate with the terminal device in a CJT manner, and different antenna port groups in the M antenna ports can communicate with the terminal device in a NCJT manner. Therefore, the above technical solution can use TRP as the granularity and can obtain the joint gain of CJT and NCJT between different TRPs.

[0194] For example, taking the case where N TRPs include the eight TRPs in FIG6a (i.e., N is 8), the eight TRPs may be TRP1, TRP2, ..., TRP8 in FIG6a. These eight TRPs each transmit eight groups (i.e., N is eight) of downlink reference signals in step S402 (or, in steps S502a and S502b), enabling the terminal device to receive eight groups of downlink reference signals. Furthermore, each of the eight TRPs may include one or more antenna ports for transmitting downlink reference signals.

[0195] Optionally, in implementation mode 1, a downlink reference signal from a TRP may be understood as one of N groups of downlink reference signals, that is, any one of the M antenna port groups may be used to transmit one or more groups of downlink reference signals. In other words, the downlink reference signal of any one of the M antenna port groups is one or more groups of downlink reference signals in the N groups of downlink reference signals.

[0196] Implementation method 2: Among the N groups of downlink reference signals received by the terminal device, different groups of downlink reference signals are sent through different beams.

[0197] Specifically, in implementation method 2, N groups of downlink reference signals are respectively sent through N beams. For example, the N groups of downlink reference signals correspond one-to-one to the N beams. Among the N beams, one or more beams can correspond to one TRP, that is, the N beams correspond to K TRPs, where K is a positive integer less than or equal to N. In other words, the antenna ports corresponding to one or more beams in the N beams can constitute one of the M antenna port groups, and the antenna ports corresponding to the other one or more beams in the N beams can constitute another antenna port group in the M antenna port groups; and so on, the antenna ports corresponding to the N beams can constitute M antenna port groups. Among them, the antenna ports in each antenna port group in the M antenna ports can communicate with the terminal device via CJT, and different antenna port groups in the M antenna ports can communicate with the terminal device via NCJT. Therefore, the above technical solution can use beam as the granularity and can obtain the joint gain of CJT and NCJT between different beams.

[0198] Optionally, the different beams may be different digital beams in the DBF technology, different analog beams in the ABF technology, or different hybrid beams in the HBF technology.

[0199] For example, N beams include the eight beams marked with asterisks in FIG6b (i.e., N is 8). In FIG6b , eight TRPs are still used as an example, where each TRP includes four beams. These four beams may be the four beams corresponding to beam identifiers (IDs) 1, 2, 3, and 4 in FIG6b . Each TRP may provide one or more beams for transmitting downlink reference signals. For example, TRP1 can send a downlink reference signal in step S402 (or, in step S502a and step S502b) using the beam with beam ID 1, TRP2 and TRP6 can send a downlink reference signal in step S402 (or, in step S502a and step S502b) using the beam with beam ID 2, TRP3, TRP4 and TRP7 can send a downlink reference signal in step S402 (or, in step S502a and step S502b) using the beam with beam ID 3, and TRP5 and TRP8 can send a downlink reference signal in step S402 (or, in step S502a and step S502b) using the beam with beam ID 4.

[0200] In the examples shown in Figures 6a and 6b, taking the M antenna port groups as 3 (i.e., M is 3) antenna port groups as an example, the first antenna port group includes the antenna ports included in TRP1, TRP2 and TRP3, the second antenna port group includes the antenna ports included in TRP4 and TRP5, and the third antenna port group includes the antenna ports included in TRP6, TRP7 and TRP8.

[0201] As shown in Figures 6a and 6b, in the first antenna port group, the antenna ports included in TRP1, TRP2, and TRP3 can transmit downlink data to the terminal device through CJT. In the second antenna port group, the antenna ports included in TRP4 and TRP5 can transmit downlink data to the terminal device through CJT. In the third antenna port group, the antenna ports included in TRP6, TRP7, and TRP8 can transmit downlink data to the terminal device through CJT. In addition, downlink data is sent to the terminal device through NCJT between different antenna port groups in the first antenna port group, the second antenna port group, and the third antenna port group to obtain the joint gain of CJT and NCJT.

[0202] Optionally, each TRP can send a downlink reference signal on one or more beams. Figure 6b takes the example of each TRP sending a downlink reference signal on a certain beam. In actual applications, a TRP can also send a downlink reference signal on two or more beams.

[0203] Optionally, the multiple antenna ports corresponding to the M antenna port groups can be located in multiple TRPs (for example, the 8 TRPs in the examples shown in Figures 6a and 6b). The multiple TRPs here can be located in the same network device (for example, the same physical site) or in two or more network devices (for example, two or more physical sites). There is no limitation here.

[0204] Optionally, the multiple antenna ports corresponding to the M antenna port groups may also be located in the same TRP, or the same network device.

[0205] In one possible implementation, when the downlink reference signal received by the terminal device in step S402 (or step S502a and step S502b) is a CSI-RS, the measurement result of the downlink reference signal sent by the terminal device in step S403 (or step S503a and step S503b) includes at least one of RI, PMI, and CQI. When the measurement result of the downlink reference signal includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receive antenna ports of the terminal device.

[0206] Exemplarily, the terminal device can demodulate and detect the received CSI-RS to calculate the signal reception quality information (such as SINR, RSRP, etc.). Taking the signal reception quality information as SINR as an example, the modulation and coding scheme (MCS) under different RIs is calculated based on the SINR, and the RI with greater spectrum efficiency (for example, maximum spectrum efficiency, or spectrum efficiency greater than a threshold) is determined as the RI included in the measurement result of the downlink reference signal based on the MCS.

[0207] Specifically, different antenna port groups in the M antenna port groups can communicate with the terminal device in an NCJT manner. When the measurement result fed back by the terminal device includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device, so that the network device can obtain downlink channel information that matches the number of receiving antenna ports of the terminal device based on the measurement result, and then determine the precoding information of the downlink data of the terminal device based on the downlink channel information. Generally, the number of receiving antenna ports of the terminal device may be relatively fixed (i.e., it will not change at any time). For example, the number of receiving antenna ports of the terminal device may be uniquely determined by the hardware of the terminal device, or the number of receiving antenna ports of the terminal device is determined by the network device scheduling multiple antenna ports included in the terminal device. To this end, in the above technical solution, the implementation process of the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device can make the precoding information determined by the network device match the number of receiving antenna ports of the terminal device, thereby avoiding the failure of the terminal device to demodulate the downlink data sent based on the precoding information.

[0208] Optionally, in the M antenna port groups, each group includes at least two antenna ports. The RIs of the antenna ports included in different antenna port groups in the M antenna port groups can be recorded as RI_0...RI_M-1, respectively. Accordingly, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups (referred to as RI_sum) can be understood as the sum of the RIs corresponding to each antenna port group in the M antenna port groups, i.e., RI_sum satisfies:

[0209] Optionally, in the first information, the RIs corresponding to different antenna port groups in the M antenna port groups may be RIs of respective antenna port groups determined based on signal reception quality information. Alternatively, when the sum of the RIs determined based on signal reception quality information in the M antenna port groups is greater than the number of receiving antenna ports of the terminal device, in the first information, the RIs corresponding to different antenna port groups in the M antenna port groups may be values ​​reallocated based on the RIs determined based on the signal reception quality information corresponding to the different antenna port groups. For example, the RIs may be values ​​reallocated based on the values ​​of the signal to interference plus noise ratio (SINR) of different antenna port groups, values ​​reallocated based on a proportional reduction, values ​​reallocated based on a reduction in a preset weighting coefficient, etc., so that the RI indicated by the first information is less than or equal to the number of receiving antenna ports of the terminal device, so that the precoding information determined by the network device matches the number of receiving antenna ports of the terminal device, thereby avoiding the terminal device from failing to demodulate the downlink data sent based on the precoding information.

[0210] Based on the technical solution of Figure 4, after the terminal device receives the resources for configuring N groups of downlink reference signals in step S401, the terminal device can send first information for indicating the measurement results of the downlink reference signals of the M antenna port groups in step S403. Among them, at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups of the M antenna port groups. In addition, different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT. In other words, the terminal device can communicate with different antenna ports in one antenna port group among the M antenna port groups by means of CJT, and the terminal device can also communicate between different antenna port groups in the M antenna port groups by means of NCJT. Thus, in the M antenna port groups, through CJT transmission between different antenna ports in the same antenna port group, and through NCJT transmission between different antenna port groups in different antenna port groups, while obtaining spatial diversity gain through NCJT, the interference between different antenna ports in the same antenna port group and between different antenna port groups can be converted into communication signals (i.e., useful signals) of the terminal device, and then the interference is reduced through CJT to improve communication efficiency.

[0211] In addition, in the implementation process of the terminal device communicating with different antenna ports only through one of the CJT method and the NCJT method, since the requirements of CJT for processing power (and / or transmission power) are higher than the requirements of NCJT for processing power (and / or transmission power), the scope of application of the method using only CJT is limited; and since the processing performance of NCJT is lower than the processing performance of CJT, the performance gain of the method using only NCJT is limited. In the M antenna port groups of the above technical solution, through CJT transmission between different antenna ports in the same antenna port group, and through NCJT transmission between different antenna port groups in different antenna port groups, the above solution can use CJT to improve the performance of NCJT, and use NCJT to reduce the requirements of CJT for processing power and transmission power, so as to obtain the joint gain of CJT and NCJT.

[0212] Referring to Figure 7 , an embodiment of the present application provides a communication device 700. This communication device 700 can implement the functions of the communication device (the communication device being a terminal device or a network device) in the above-described method embodiment, thereby also achieving the beneficial effects of the above-described method embodiment. In this embodiment of the present application, the communication device 700 can be a communication device, or it can be an integrated circuit or component within the communication device, such as a chip.

[0213] Optionally, the transceiver unit 702 shown in FIG. 7 may be implemented by the structure shown in FIG. 1 a , FIG. 1 b or FIG. 1 c .

[0214] In one possible implementation, when the apparatus 700 is used to execute the method executed by the terminal device in the aforementioned FIG. 4 / FIG. 5 and related embodiments, the apparatus 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is configured to receive configuration information, where the configuration information is used to configure resources for N groups of downlink reference signals, where N is an integer greater than 1; at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in M ​​antenna port groups, where M is an integer less than or equal to N; wherein any group in the N groups of downlink reference signals includes at least one downlink reference signal, any group in the M antenna port groups includes at least two antenna ports, different antenna ports in any group in the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT; the terminal device receives downlink reference signals from the M antenna port groups based on the configuration information; and the transceiver unit 702 is further configured to send first information, where the first information is used to indicate a measurement result of the downlink reference signal of the M antenna port groups.

[0215] In a possible implementation, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs.

[0216] In a possible implementation, different groups of downlink reference signals in the N groups of downlink reference signals are sent through different beams.

[0217] In one possible implementation, the downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources; and / or, the downlink reference signals sent by different antenna port groups in the M antenna port groups are sent through different time-frequency resources.

[0218] In a possible implementation, the downlink reference signal includes a CSI-RS, and the measurement result of the downlink reference signal includes at least one of an RI, a PMI, and a CQI.

[0219] In a possible implementation, when the measurement result of the downlink reference signal includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device.

[0220] In a possible implementation manner, the downlink reference signal of any one group in the M antenna port groups is a downlink reference signal of a different group in the N groups of downlink reference signals.

[0221] In a possible implementation, the M antenna port groups include multiple antenna ports, and the configuration information further includes indication information indicating a correspondence between the multiple antenna ports and the M antenna port groups.

[0222] In one possible implementation, different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, including: different antenna ports in any one of the M antenna port groups are used to transmit downlink data on the same time-frequency resources.

[0223] In a possible implementation, different antenna port groups among the M antenna port groups are used to transmit downlink data through NCJT, including: different antenna port groups among the M antenna port groups are used to transmit downlink data on different time-frequency resources.

[0224] In one possible implementation, when the device 700 is used to execute the method executed by the network device in Figure 7 and related embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the processing unit 701 is used to determine configuration information, where the configuration information is used to configure resources of N groups of downlink reference signals, where N is an integer greater than 1; at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in M ​​antenna port groups, where M is an integer less than or equal to N; wherein any group of the N groups of downlink reference signals includes at least one downlink reference signal, any group of the M antenna port groups includes at least two antenna ports, different antenna ports in any group of the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT; the terminal device receives the downlink reference signal from the M antenna port groups based on the configuration information; and the transceiver unit 702 is used to send the configuration information.

[0225] In a possible implementation, the transceiver unit 702 is further configured to receive first information, where the first information is used to indicate part or all of the measurement results of the downlink reference signals of the M antenna port groups.

[0226] In one possible implementation, the M antenna port groups include multiple antenna ports, and the processing unit 701 is further used to determine the correspondence between the multiple antenna ports and the M antenna port groups based on second information; the second information includes at least one of the following: the transmission capability of each antenna port in the multiple antenna ports; the signal quality of the reference signals corresponding to the multiple antenna ports, wherein the signal quality difference of the reference signals corresponding to the same antenna port group in the M antenna port groups is lower than a threshold; receiving space information of the reference signals corresponding to the multiple antenna ports, wherein the receiving space includes multiple subspaces, and each antenna port of the same antenna port group in the M antenna port groups corresponds to the same subspace; ABF IDs corresponding to the multiple antenna ports, wherein each antenna port of the same antenna port group in the M antenna port groups corresponds to the same ABF ID.

[0227] In a possible implementation, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs.

[0228] In a possible implementation, different groups of downlink reference signals in the N groups of downlink reference signals are sent through different beams.

[0229] In one possible implementation, the downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources; and / or, the downlink reference signals sent by different antenna port groups in the M antenna port groups are sent through different time-frequency resources.

[0230] In a possible implementation, the downlink reference signal includes a CSI-RS, and the measurement result of the downlink reference signal includes at least one of an RI, a PMI, and a CQI.

[0231] In a possible implementation, when the measurement result of the downlink reference signal includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device.

[0232] In a possible implementation manner, the downlink reference signal of any one group in the M antenna port groups is a downlink reference signal of a different group in the N groups of downlink reference signals.

[0233] In a possible implementation, the M antenna port groups include multiple antenna ports, and the configuration information further includes indication information indicating a correspondence between the multiple antenna ports and the M antenna port groups.

[0234] In one possible implementation, different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, including: different antenna ports in any one of the M antenna port groups are used to transmit downlink data on the same time-frequency resources.

[0235] In a possible implementation, different antenna port groups among the M antenna port groups are used to transmit downlink data through NCJT, including: different antenna port groups among the M antenna port groups are used to transmit downlink data on different time-frequency resources.

[0236] It should be noted that, for details on the information execution process of the units of the above-mentioned communication device 700, please refer to the description in the method embodiment shown above in this application, and no further details will be given here.

[0237] Please refer to Fig. 8, which is another schematic structural diagram of a communication device 800 provided in this application. The communication device 800 includes a logic circuit 801 and an input / output interface 802. The communication device 800 may be a chip or an integrated circuit.

[0238] Optionally, the input and output interface 802 shown in FIG. 8 may be implemented by the structure shown in FIG. 1 a , FIG. 1 b , or FIG. 1 c .

[0239] The transceiver unit 702 shown in FIG7 may be a communication interface, which may be the input / output interface 802 in FIG8 , which may include an input interface and an output interface. Alternatively, the communication interface may be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0240] Optionally, the input and output interface 802 is used to receive configuration information, which is used to configure resources of N groups of downlink reference signals, where N is an integer greater than 1; at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in M ​​antenna port groups, where M is an integer less than or equal to N; wherein different antenna ports in any group of the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT; the terminal device receives downlink reference signals from the M antenna port groups based on the configuration information; the logic circuit 801 is used to receive downlink reference signals from the M antenna port groups based on the configuration information; the input and output interface 802 is also used to send first information, which is used to indicate the measurement results of the downlink reference signals of the M antenna port groups.

[0241] Optionally, the logic circuit 801 is used to determine configuration information, which is used to configure resources of N groups of downlink reference signals, where N is an integer greater than 1; at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in M ​​antenna port groups, where M is an integer less than or equal to N; wherein different antenna ports in any group of the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through NCJT; the terminal device receives downlink reference signals from the M antenna port groups based on the configuration information; and the input and output interface 802 is used to send the configuration information.

[0242] The logic circuit 801 and the input / output interface 802 may also execute other steps executed by the terminal device or the network device in any embodiment and achieve corresponding beneficial effects, which will not be described in detail here.

[0243] In a possible implementation, the processing unit 701 shown in FIG. 7 may be the logic circuit 801 in FIG. 8 .

[0244] Optionally, the logic circuit 801 may be a processing device, and the functions of the processing device may be partially or entirely implemented by software. The functions of the processing device may be partially or entirely implemented by software.

[0245] Optionally, the processing device may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform corresponding processing and / or steps in any one of the method embodiments.

[0246] Alternatively, the processing device may include only a processor. A memory for storing the computer program is located outside the processing device, and the processor is connected to the memory via circuits / wires to read and execute the computer program stored in the memory. The memory and processor may be integrated or physically separate.

[0247] Optionally, the processing device may be one or more chips, or one or more integrated circuits. For example, the processing device may be one or more field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), system-on-chips (SoCs), central processor units (CPUs), network processors (NPs), digital signal processors (DSPs), microcontroller units (MCUs), programmable logic devices (PLDs), or other integrated chips, or any combination of the above chips or processors.

[0248] Please refer to FIG. 9 , which shows a communication device 900 involved in the above embodiments provided in an embodiment of the present application. Specifically, the communication device 900 may be a communication device serving as a terminal device in the above embodiments.

[0249] Herein, a possible logical structure diagram of the communication device 900 is shown. The communication device 900 may include but is not limited to at least one processor 901 and a communication port 902 .

[0250] The transceiver unit 702 shown in FIG7 may be a communication interface, which may be the communication port 902 in FIG9 , which may include an input interface and an output interface. Alternatively, the communication port 902 may be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0251] Optionally, the communication port 902 shown in FIG. 9 may be implemented by the structure shown in FIG. 1 a , FIG. 1 b or FIG. 1 c .

[0252] Further optionally, the device may also include at least one of a memory 903 and a bus 904. In an embodiment of the present application, the at least one processor 901 is used to control and process the actions of the communication device 900.

[0253] In addition, the processor 901 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0254] It should be noted that the communication device 900 shown in Figure 9 can be specifically used to implement the steps implemented by the terminal device in the aforementioned method embodiment and achieve the corresponding technical effects of the terminal device. The specific implementation methods of the communication device shown in Figure 9 can refer to the description in the aforementioned method embodiment and will not be repeated here.

[0255] Please refer to Figure 10, which is a structural diagram of the communication device 1000 involved in the above-mentioned embodiments provided in an embodiment of the present application. The communication device 1000 can specifically be a communication device serving as a network device in the above-mentioned embodiments, wherein the structure of the communication device can refer to the structure shown in Figure 10.

[0256] The communication device 1000 includes at least one processor 1011 and at least one network interface 1014. Further optionally, the communication device also includes at least one memory 1012, at least one transceiver 1013 and one or more antennas 1015. The processor 1011, the memory 1012, the transceiver 1013 and the network interface 1014 are connected, for example, via a bus. In an embodiment of the present application, the connection may include various interfaces, transmission lines or buses, etc., which are not limited in this embodiment. The antenna 1015 is connected to the transceiver 1013. The network interface 1014 is used to enable the communication device to communicate with other communication devices through a communication link. For example, the network interface 1014 may include a network interface between the communication device and the core network device, such as an S1 interface, and the network interface may include a network interface between the communication device and other communication devices (such as other network devices or core network devices), such as an X2 or Xn interface.

[0257] The transceiver unit 702 shown in FIG7 may be a communication interface, which may be the network interface 1014 in FIG10 , which may include an input interface and an output interface. Alternatively, the network interface 1014 may be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0258] Optionally, the network interface 1014 shown in FIG. 10 may be implemented by the structure shown in FIG. 1a , FIG. 1b , or FIG. 1c .

[0259] Processor 1011 is primarily used to process communication protocols and communication data, control the entire communication device, execute software programs, and process software program data, for example, to support the communication device in performing the actions described in the embodiments. The communication device may include a baseband processor and a central processing unit. The baseband processor is primarily used to process communication protocols and communication data, while the central processing unit is primarily used to control the entire terminal device, execute software programs, and process software program data. Processor 1011 in Figure 10 may integrate the functions of both a baseband processor and a central processing unit. Those skilled in the art will appreciate that the baseband processor and the central processing unit may also be independent processors interconnected via a bus or other technology. Those skilled in the art will appreciate that a terminal device may include multiple baseband processors to accommodate different network standards, multiple central processing units to enhance its processing capabilities, and various components of the terminal device may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The central processing unit may also be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be built into the processor or stored in memory as a software program, which is executed by the processor to implement the baseband processing functionality.

[0260] The memory is primarily used to store software programs and data. Memory 1012 can exist independently and be connected to processor 1011. Alternatively, memory 1012 and processor 1011 can be integrated together, for example, within a single chip. Memory 1012 can store program code for executing the technical solutions of the embodiments of the present application, and execution is controlled by processor 1011. The various computer program codes executed can also be considered drivers for processor 1011.

[0261] Figure 10 shows only one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device. The memory may be a storage element on the same chip as the processor, i.e., an on-chip storage element, or an independent storage element, which is not limited in the present embodiment.

[0262] The transceiver 1013 can be used to support the reception or transmission of radio frequency signals between the communication device and the terminal. The transceiver 1013 can be connected to the antenna 1015. The transceiver 1013 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 1015 can receive radio frequency signals. The receiver Rx of the transceiver 1013 is used to receive the radio frequency signal from the antenna, convert the radio frequency signal into a digital baseband signal or a digital intermediate frequency signal, and provide the digital baseband signal or digital intermediate frequency signal to the processor 1011 so that the processor 1011 can further process the digital baseband signal or digital intermediate frequency signal, such as demodulation and decoding. In addition, the transmitter Tx in the transceiver 1013 is also used to receive a modulated digital baseband signal or digital intermediate frequency signal from the processor 1011, convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and transmit the radio frequency signal through one or more antennas 1015. Specifically, the receiver Rx can selectively perform one or more stages of down-mixing and analog-to-digital conversion on the RF signal to obtain a digital baseband signal or a digital intermediate frequency signal. The order of the down-mixing and analog-to-digital conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing and digital-to-analog conversion on the modulated digital baseband signal or digital intermediate frequency signal to obtain a RF signal. The order of the up-mixing and digital-to-analog conversion processes is adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as digital signals.

[0263] The transceiver 1013 may also be referred to as a transceiver unit, a transceiver, a transceiver device, etc. Optionally, a device in the transceiver unit that implements a receiving function may be referred to as a receiving unit, and a device in the transceiver unit that implements a transmitting function may be referred to as a transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0264] It should be noted that the communication device 1000 shown in Figure 10 can be specifically used to implement the steps implemented by the network device in the aforementioned method embodiment, and to achieve the corresponding technical effects of the network device. The specific implementation methods of the communication device 1000 shown in Figure 10 can refer to the description in the aforementioned method embodiment, and will not be repeated here one by one.

[0265] An embodiment of the present application also provides a computer-readable storage medium, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method described in the possible implementation methods of the terminal device or network device in the above embodiments.

[0266] An embodiment of the present application also provides a computer program product (or computer program). When the computer program product is executed by the processor, the processor executes the method of the possible implementation mode of the above-mentioned terminal device or network device.

[0267] An embodiment of the present application also provides a chip system, which includes at least one processor for supporting a communication device to implement the functions involved in the possible implementation methods of the above-mentioned communication device. Optionally, the chip system also includes an interface circuit, which provides program instructions and / or data to the at least one processor. In one possible design, the chip system may also include a memory, which is used to store the necessary program instructions and data for the communication device. The chip system can be composed of chips, or it can include chips and other discrete devices, wherein the communication device can specifically be a terminal device or a network device in the aforementioned method embodiment.

[0268] An embodiment of the present application also provides a communication system, which includes the terminal device and network device in any of the above embodiments.

[0269] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0270] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0271] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0272] When the above-mentioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above-mentioned method embodiment. When the terminal chip receives information from the base station, it can be understood that the information is first received by other modules in the terminal (such as a radio frequency module or antenna) and then sent to the terminal chip by these modules. When the terminal chip sends information to the base station, it can be understood that the information is first sent to other modules in the terminal (such as a radio frequency module or antenna) and then sent to the base station by these modules.

[0273] When the above-mentioned communication device is a chip applied to a base station, the base station chip implements the functions of the base station in the above-mentioned method embodiment. When the base station chip receives information from the terminal, it can be understood that the information is first received by other modules in the base station (such as a radio frequency module or antenna) and then sent to the base station chip by these modules. When the base station chip sends information to the terminal, it can be understood that the information is sent to other modules in the base station (such as a radio frequency module or antenna) and then sent to the terminal by these modules.

[0274] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0275] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and storage medium can also exist in a base station or a terminal as discrete components.

[0276] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0277] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0278] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

Claims

1. A method for configuring reference signal resources, characterized in that: include: Receive configuration information, where the configuration information is used to configure resources of N groups of downlink reference signals, where N is an integer greater than 1; at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in M ​​antenna port groups, where M is an integer less than or equal to N; wherein any group of the N groups of downlink reference signals includes at least one downlink reference signal, any group of the M antenna port groups includes at least two antenna ports, different antenna ports in any group of the M antenna port groups are used to transmit downlink data through joint coherent transmission CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through non-joint coherent transmission NCJT; Receiving a downlink reference signal from the M antenna port groups based on the configuration information; Sending first information, where the first information is used to indicate a measurement result of a downlink reference signal of the M antenna port groups.

2. The method according to claim 1, characterized in that Different groups of downlink reference signals in the N groups of downlink reference signals come from N transmission reception points TRP respectively.

3. The method according to claim 1, characterized in that Different groups of downlink reference signals in the N groups of downlink reference signals come from different transmit beams.

4. The method according to any one of claims 1 to 3, characterized in that: The downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources; and / or, The downlink reference signals sent by different antenna port groups among the M antenna port groups are sent through different time-frequency resources.

5. The method according to any one of claims 1 to 4, characterized in that: The downlink reference signal includes a downlink channel information reference signal CSI-RS, and the measurement result of the downlink reference signal includes at least one of a rank indicator RI, a precoding matrix indicator PMI, and a channel quality indicator CQI.

6. The method according to claim 5, characterized in that When the measurement result of the downlink reference signal includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device.

7. The method according to any one of claims 1 to 6, characterized in that: The antenna ports of any one group among the M antenna port groups are used to transmit downlink reference signals of different groups among the N groups of downlink reference signals.

8. The method according to any one of claims 1 to 7, characterized in that: The resources of the N groups of downlink reference signals include port resources of sending ports of the N groups of downlink reference signals.

9. The method according to claim 8, characterized in that The configuration information includes a resource index or a resource identifier of a port resource of a sending port of the N groups of downlink reference signals.

10. The method according to any one of claims 1 to 9, characterized in that: The configuration information includes indication information indicating a correspondence between the transmission ports of the N groups of downlink reference signals and the M antenna port groups.

11. The method according to any one of claims 1 to 10, characterized in that: Different antenna ports in any one of the M antenna port groups are used to transmit downlink data through CJT, including: Different antenna ports in any one of the M antenna port groups are used to transmit downlink data on the same time-frequency resources.

12. The method according to any one of claims 1 to 11, characterized in that: Different antenna port groups among the M antenna port groups are used to transmit downlink data through NCJT, including: Different antenna port groups among the M antenna port groups are used to transmit downlink data on different time-frequency resources.

13. A method for configuring reference signal resources, characterized in that: include: Determine configuration information, where the configuration information is used to configure resources of N groups of downlink reference signals, where N is an integer greater than 1; at least two groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different antenna port groups in M ​​antenna port groups, where M is an integer less than or equal to N; wherein any group of the N groups of downlink reference signals includes at least one downlink reference signal, and any group of the M antenna port groups includes at least two antenna ports, and different antenna ports in any group of the M antenna port groups are used to transmit downlink data through joint coherent transmission CJT, and different antenna port groups in the M antenna port groups are used to transmit downlink data through non-joint coherent transmission NCJT; The configuration information is sent.

14. The method according to claim 13, characterized in that The method further comprises: First information is received, where the first information is used to indicate part or all of the measurement results of the downlink reference signals of the M antenna port groups.

15. The method according to claim 13 or 14, characterized in that The M antenna port groups include multiple antenna ports, and the method further includes: Determine a correspondence between the multiple antenna ports and the M antenna port groups based on the second information; The second information includes at least one of the following: a transmission capability of each of the plurality of antenna ports; signal qualities of reference signals corresponding to the multiple antenna ports, wherein a difference in signal qualities of reference signals corresponding to the same antenna port group in the M antenna port groups is lower than a threshold; receiving space information of reference signals corresponding to the multiple antenna ports, wherein the receiving space includes multiple subspaces, and each antenna port of the same antenna port group in the M antenna port groups corresponds to the same subspace; The multiple antenna ports correspond to analog beamforming identifiers ABF IDs, wherein each antenna port in the same antenna port group among the M antenna port groups corresponds to the same ABF ID.

16. The method according to any one of claims 13 to 15, characterized in that Different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs.

17. The method according to any one of claims 13 to 15, characterized in that Different groups of downlink reference signals in the N groups of downlink reference signals are sent through different beams.

18. The method according to any one of claims 13 to 17, characterized in that The downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups are sent through the same time-frequency resources; and / or, The downlink reference signals sent by different antenna port groups among the M antenna port groups are sent through different time-frequency resources.

19. The method according to any one of claims 13 to 18, characterized in that The downlink reference signal includes a CSI-RS, and the measurement result of the downlink reference signal includes at least one of an RI, a PMI and a CQI.

20. The method according to claim 19, characterized in that When the measurement result of the downlink reference signal includes RI, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups is less than or equal to the number of receiving antenna ports of the terminal device.

21. The method according to any one of claims 13 to 20, characterized in that The antenna ports of any one group among the M antenna port groups are used to transmit downlink reference signals of different groups among the N groups of downlink reference signals.

22. The method according to any one of claims 13 to 21, characterized in that The resources of the N groups of downlink reference signals include port resources of sending ports of the N groups of downlink reference signals.

23. The method according to claim 22, characterized in that The configuration information includes a resource index or a resource identifier of a port resource of a sending port of the N groups of downlink reference signals.

24. The method according to any one of claims 13 to 23, characterized in that The configuration information includes indication information indicating a correspondence between the transmission ports of the N groups of downlink reference signals and the M antenna port groups.

25. The method according to any one of claims 13 to 24, characterized in that Different antenna ports in any one of the M antenna port groups are used to transmit downlink data through joint coherent transmission CJT, including: Different antenna ports in any one of the M antenna port groups are used to transmit downlink data on the same time-frequency resources.

26. The method according to any one of claims 13 to 25, characterized in that Different antenna port groups among the M antenna port groups are used to transmit downlink data through NCJT, including: Different antenna port groups among the M antenna port groups are used to transmit downlink data on different time-frequency resources.

27. A communication device, characterized in that: Comprising means for performing the method as claimed in any one of claims 1 to 26.

28. A communication device, characterized in that: The method comprises at least one processor coupled to a memory; the at least one processor is configured to execute the method according to any one of claims 1 to 26.

29. A readable storage medium, characterized in that: The storage medium stores a computer program or an instruction, and when the computer program or the instruction is executed by the communication device, the method according to any one of claims 1 to 26 is implemented.

30. A computer program product, characterized in that The method comprises instructions which, when executed on a computer, cause the computer to perform the method according to any one of claims 1 to 26.

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