Reference signal resource configuration method and related equipment

Abstract

The invention provides a reference signal resource configuration method and related equipment. In the method, a terminal device can perform communication at different antenna ports in any one of M antenna port groups in a joint coherent transmission (CJT) mode, and the terminal device can also perform communication among different antenna port groups in the M antenna port groups in a non-joint coherent transmission (NCJT) mode, and the terminal device can also perform communication among the different antenna port groups in the M antenna port groups in a non-joint coherent transmission (NCJT) mode. 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, the space diversity gain is obtained through the NCJT, and at the same time, the space diversity gain is improved. In addition, interference between different antenna ports in the same antenna port group and interference between different antenna port groups can be converted into communication signals of the terminal equipment, so that the interference is reduced through the CJT, and the communication efficiency is improved.

Description

Technical Field

[0001] 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

[0002] Wireless communication can be a transmission communication between two or more communication nodes that is not transmitted through conductors or cables or is transmitted through air interfaces. For example, the communication nodes include network devices and terminal devices. Generally, the terminal device can access the network device and receive scheduling and instruction information from the network device to achieve wireless communication.

[0003] At present, multiple input multiple output (MIMO) technology is a communication technology used to improve user experience. At the same time, the application of MIMO technology can also increase the average capacity of a cell. In a MIMO system, in order to ensure a higher user experience, the deployment of network equipment may be gradually encrypted.

[0004] However, in MIMO systems, how to increase capacity and reduce interference is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides a method for configuring reference signal resources and related equipment, which are used to reduce interference and improve communication efficiency.

[0006] In a first aspect, the present application provides a method for configuring reference signal resources, which is performed by a terminal device (or terminal), or the method is performed by some components in the terminal device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can implement all or part of the terminal device functions. In the first aspect and its possible implementation, the method is described by taking the method being performed by the terminal device as an example. In the method, a terminal device receives 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 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 terminal device sends first information, where the first information is used to indicate measurement results of downlink reference signals of the M antenna port groups.

[0007] Based on the above technical solution, after the terminal device receives 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 with 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.

[0008] 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 on processing power (and / or transmission power) are higher than those of NCJT on 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 (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 on processing power and transmission power, so as to obtain the joint gain of CJT and NCJT.

[0009] 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.

[0010] Exemplarily, taking the downlink reference signal as CSI-RS as an example, the CSI-RS configuration information received by the terminal device can configure the resources of CSI-RS through three granularities of resource configuration (resourceConfig), resource set (resourceSet) and resource (resource). In the above technical scheme, 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, 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).

[0011] 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.

[0012] 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 group of the M antenna port groups are respectively different groups of downlink reference signals 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 group 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.

[0013] 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.

[0014] 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.

[0015] 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 (transmission reception point, TRP).

[0016] Based on the above technical solution, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs. In other words, the N groups of downlink reference signals are respectively sent through N TRPs. For example, the N groups of downlink reference signals correspond to the N TRPs one-to-one. Therefore, the above technical solution can use TRP as the granularity and can obtain the joint gain of CJT and NCJT between different TRPs.

[0017] 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 indicating the measurement results of the downlink reference signals of the M antenna port groups to the network device. 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.

[0018] 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 different beams.

[0019] Based on the above technical solution, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different beams. In other words, the N groups of downlink reference signals are respectively sent through N beams. For example, the N groups of downlink reference signals correspond to the N beams one by one. Among the N beams, one or more beams may correspond to one TRP, that is, the N beams correspond to K TRPs, respectively, where K is less than or equal to N. Therefore, the above technical solution can use beams as granularity and can obtain the joint gain of CJT and NCJT between different beams.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] Optionally, downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups and 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.

[0024] Based on the above technical solution, in the process of sending downlink reference signals, different antenna ports in any group of M antenna ports can send downlink reference signals through CJT, and antenna ports in different antenna port groups among the M antenna ports can send downlink reference signals through NCJT, so that the sending process of the N groups of downlink reference signals can obtain the joint gain of CJT and NCJT.

[0025] In a possible implementation manner 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.

[0026] Based on the above technical solution, different antenna port groups among 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 among 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 matching the number of receiving antenna ports of the terminal device based on the measurement results.

[0027] In a possible implementation manner of the first aspect, the configuration information includes indication information indicating a correspondence between the sending ports of the N groups of downlink reference signals and the M antenna port groups.

[0028] 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 one 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.

[0029] Optionally, the indication information and the configuration information may be carried in different messages / information / signaling.

[0030] The second aspect of the present application provides a method for configuring reference signal resources, which is performed by a network device, or the method is performed by some components (such as a processor, a chip or a chip system, etc.) in the network device, or the method can also be implemented by a logic module or software that can implement all or part of the network device functions. In the second aspect and its possible implementation, the method is described by taking the method being performed by the network device as an example. In the method, a network device determines 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 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 the downlink reference signal from the M antenna port groups based on the configuration information; and the network device sends the configuration information.

[0031] 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 through CJT with different antenna ports in one antenna port group in the M antenna port groups, and the terminal device can also communicate through NCJT between different antenna port groups in the M antenna port groups. Thus, in the M antenna port groups, by CJT transmission between different antenna ports in the same antenna port group, and by 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 different antenna port groups can also be converted into communication signals (i.e., useful signals) of the terminal device, and then reduce interference through CJT to improve communication efficiency.

[0032] 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 those 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 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.

[0033] 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.

[0034] 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.

[0035] 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 indicating the measurement results of the downlink reference signals of the M antenna port groups to the network device. 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.

[0036] In a possible implementation manner of the second aspect, the M antenna port groups include multiple antenna ports, and the method further includes: the network device determines, based on second information, a correspondence between the multiple antenna ports and the M antenna port groups; the second information includes at least one of the following:

[0037] a transmission capability of each of the plurality of antenna ports;

[0038] signal qualities of reference signals corresponding to the multiple antenna ports, wherein a difference in signal qualities of reference signals corresponding to a same antenna port group in the M antenna port groups is lower than a threshold;

[0039] 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;

[0040] Analog beamforming, identity, ABF ID 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.

[0041] Based on the above technical solution, the network device can determine the correspondence between 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.

[0042] 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.

[0043] Based on the above technical solution, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs. In other words, the N groups of downlink reference signals are respectively sent through N TRPs. For example, the N groups of downlink reference signals correspond to the N TRPs one-to-one. Therefore, the above technical solution can use TRP as the granularity and can obtain the joint gain of CJT and NCJT between different TRPs.

[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 different beams.

[0045] Based on the above technical solution, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through different beams. In other words, the N groups of downlink reference signals are respectively sent through N beams. For example, the N groups of downlink reference signals correspond to the N beams one by one. Among the N beams, one or more beams may correspond to one TRP, that is, the N beams correspond to K TRPs, respectively, where K is less than or equal to N. Therefore, the above technical solution can use beams as granularity and can obtain the joint gain of CJT and NCJT between different beams.

[0046] In a possible implementation of the second 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.

[0047] 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.

[0048] Optionally, downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups and 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.

[0049] Based on the above technical solution, in the process of sending downlink reference signals, different antenna ports in any group of M antenna ports can send downlink reference signals through CJT, and antenna ports in different antenna port groups among the M antenna ports can send downlink reference signals through NCJT, so that the sending process of the N groups of downlink reference signals can obtain the joint gain of CJT and NCJT.

[0050] In a possible implementation manner 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.

[0051] Based on the above technical solution, different antenna port groups among 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 among 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 matching the number of receiving antenna ports of the terminal device based on the measurement results.

[0052] Optionally, the resources of the N groups of downlink reference signals configured by the configuration information include 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.

[0053] In a possible implementation manner of the second aspect, the configuration information includes indication information indicating a correspondence between the sending ports of the N groups of downlink reference signals and the M antenna port groups.

[0054] 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 one 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.

[0055] Optionally, the indication information and the configuration information may be carried in different messages / information / signaling.

[0056] In a third aspect of the present application, a communication device is provided, which is a terminal device, or the device is a partial component in the terminal device (such as a processor, a chip or a chip system, etc.), or the device is a logic module or software that can implement all or part of the functions of the terminal device. In the fifth aspect and its possible implementation, the communication device is described as being executed by the terminal device.

[0057] The device includes a transceiver unit and a processing unit, the transceiver unit is used to receive 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 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 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; 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, the first information is used to indicate the measurement results of the downlink reference signals of the M antenna port groups.

[0058] 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.

[0059] 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 different beams.

[0060] 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.

[0061] 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.

[0062] In a possible implementation manner 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.

[0063] In a possible implementation manner of the third aspect, the downlink reference signal of any group in the M antenna port groups is respectively a downlink reference signal of a different group in the N groups of downlink reference signals.

[0064] In a possible implementation manner of the third aspect, the configuration information further includes indication information indicating a correspondence between the sending ports of the N downlink reference signals and the M antenna port groups.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] In a fourth aspect of the present application, a communication device is provided, which is a network device, or the device is a partial component in the network device (such as a processor, a chip or a chip system, etc.), or the device is a logic module or software that can implement all or part of the network device functions. In the sixth aspect and its possible implementation, the communication device is described as being executed by the network device.

[0069] 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 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; the transceiver unit is used to send the configuration information.

[0070] 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.

[0071] In a possible implementation manner 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.

[0072] 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.

[0073] 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.

[0074] In a possible implementation of the fourth 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.

[0075] 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.

[0076] In a possible implementation manner 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.

[0077] In a possible implementation manner of the fourth aspect, the downlink reference signal of any group in the M antenna port groups is respectively a downlink reference signal of a different group in the N groups of downlink reference signals.

[0078] In a possible implementation manner of the fourth aspect, the configuration information further includes indication information indicating a correspondence between the sending ports of the N downlink reference signals and the M antenna port groups.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] In a sixth aspect, an embodiment of the present application provides a communication device, including 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.

[0084] A seventh aspect of an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and network device.

[0085] An eighth aspect of 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 a method as described in any possible implementation of any one of the first to second aspects above.

[0086] A ninth aspect of an embodiment 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.

[0087] A tenth aspect of an embodiment of the present application provides a chip system, which includes at least one processor, and is used to support a communication device to implement the method described in any possible implementation method of any aspect of the first to second aspects above.

[0088] In a possible design, the chip system may also 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 devices. Optionally, the chip system also includes an interface circuit, which provides program instructions and / or data for the at least one processor.

[0089] Among them, the technical effects brought about by any design method in the third aspect to the tenth aspect can refer to the technical effects brought about by the different design methods in the above-mentioned first aspect to the second aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] Figure 1a A schematic diagram of a signal transmission method involved in this application;

[0091] Figure 1b Another schematic diagram of the signal transmission method involved in this application;

[0092] Figure 1c Another schematic diagram of the signal transmission method involved in this application;

[0093] Figure 2 A schematic diagram of a communication system involved in this application;

[0094] Figure 3a A schematic diagram of the communication process involved in this application;

[0095] Figure 3bA schematic diagram of a communication scenario involved in this application;

[0096] Figure 4 A schematic diagram of a method for configuring reference signal resources provided in this application;

[0097] Figure 5 Another schematic diagram of a method for configuring reference signal resources provided in this application;

[0098] Figure 6a A schematic diagram of an application example of the method for configuring reference signal resources provided in this application;

[0099] Figure 6b Another schematic diagram of an application example of the method for configuring reference signal resources provided in the present application;

[0100] Figure 7 A schematic diagram of a communication device provided for this application;

[0101] Figure 8 Another schematic diagram of a communication device provided by the present application;

[0102] Fig. 9 Another schematic diagram of a communication device provided by the present application;

[0103] Fig.10 Another schematic diagram of a communication device provided by the present application. DETAILED DESCRIPTION

[0104] First, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0105] (1) Configuration and pre-configuration: In this application, configuration and pre-configuration will be used at the same time. Configuration refers to the base station or server and other network devices 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 method in which a base station or server and other network devices send parameter information or values ​​to the terminal through a communication link or carrier; it can also be a definition of corresponding parameters or parameter values ​​given 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.

[0106] (2) In this application, "used for indication" may include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used for indicating A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0107] 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, specified by the protocol), thereby reducing the indication overhead to a certain extent.

[0108] 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 can be configured by the transmitting device by sending configuration information to the receiving device. Among them, the configuration information can include, for example, but not limited to, 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).

[0109] (3) Reference signal (RS). In a communication system, it is necessary to estimate the uplink channel 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 restoring the received signal in order to compensate for the signal distortion caused by channel fading and noise fading. It uses the reference signal known in advance by the transmitter and receiver to track the time and frequency domain changes of the channel. The above reference signals are also called reference signals. They are distributed on different resource elements (RE) in the two-dimensional space of time and frequency within the orthogonal frequency division multiplexing (OFDM) symbol and have known amplitude and phase.

[0110] (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 "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated with each other 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 items or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, 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.

[0111] (5) "Send" and "receive" in the embodiments of the present application indicate the direction of signal transmission. For example, "send information to device X" can be understood as the destination of the information is device X, which can include direct sending through the air interface, and also include indirect sending through the air interface by other units or modules. "Receive information from device Y" can be understood as the source of the information is device Y, which can include direct receiving from device Y through the air interface, and also include indirect receiving from device Y through the air interface from other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0112] Exemplarily, the communication process between entity A and entity B is taken as an example. In the present application, entity A sends information to entity B, which may be A directly sending to B, or A indirectly sending to B through other entities. Similarly, entity B receives information from entity A, which may be entity B directly receiving the information sent by entity A, or entity B indirectly receiving the information sent by entity A through other entities. Entities A and B here may be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information may be information interaction between a RAN node and a terminal, for example, information interaction between a base station and a terminal; the sending and receiving of information may also be information interaction between two RAN nodes, for example, information interaction between a CU and a DU; the sending and receiving of information may also be information interaction between different modules inside a device, for example, information interaction between a terminal chip and other modules of the terminal, or information interaction between a base station chip and other modules in the base station.

[0113] (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 transmission signal is adapted to the channel. Therefore, compared with the process of receiving the non-precoded transmission signal and eliminating the influence between channels at the receiving end, the complexity of the process of receiving the precoded transmission signal and eliminating the influence between channels at the receiving end 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.

[0114] 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.

[0115] It should be understood that the relevant description of the precoding technology is only for ease of understanding and is not intended to limit the scope of protection of the embodiments of the present application. In the specific implementation process, the transmitting end can also perform precoding in other ways. For example, when channel information (such as but not limited to the channel matrix) cannot be obtained, a pre-set precoding matrix or a weighted processing method is used for precoding. For the sake of brevity, the specific content is not repeated herein.

[0116] (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 a 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 prior art. For the sake of brevity, it will not be listed here one by one.

[0117] 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 determination methods of the precoding matrix listed above are only examples and should not constitute any limitation to the present application. The determination methods of the precoding matrix can refer to the prior art, and for the sake of brevity, they are not listed here one by one.

[0118] It should be noted that, according to the method provided by the embodiment of the present application, the network device can determine the CSI RS port, the 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; it can also be subjected to some beamforming methods, such as zero forcing (ZF), regularized zero-forcing (RZF), minimum mean-squared error (MMSE), maximizing the signal-to-leakage-and-noise ratio (SLNR), etc., to obtain the final precoding matrix 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.

[0119] It is understandable 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 understandable 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.

[0120] 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 adapt to the channel state, thereby improving the signal reception quality.

[0121] (8) Antenna port: It can be referred to as port for short. 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, for example, a CSI-RS port, a demodulation reference signal (DMRS), an SRS port, etc.

[0122] (9) Spatial layer: In MIMO, a spatial layer can be regarded as an independently transmittable data stream. In order to improve the utilization of spectrum resources and the data transmission capacity of the communication system, network devices can transmit data to terminal devices through multiple spatial layers.

[0123] The number of spatial layers is 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. In 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 corresponded to the first spatial layer, and the precoding vector determined by the eigenvector corresponding to the smallest eigenvalue can be corresponded to 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 from the first spatial layer to the Rth spatial layer in sequence.

[0124] It should be understood that distinguishing different spatial layers based on characteristic values ​​is only a possible implementation method and should not constitute any limitation to the present application. For example, the protocol may also predefine other criteria for distinguishing spatial layers, which is not limited in the present application.

[0125] (10) Channel state information (CSI) report: In a wireless communication system, information used to describe 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 the present 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, and the present application does not limit this.

[0126] (11) Multi-point coordinated transmission: In downlink transmission, the 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 reported by the terminal devices collected by the network devices in the collaborative set (such as channel state information (CSI) or reference signal receiving power (RSRP), etc.), and uniformly schedules the terminal devices in the collaborative set according to the channel state-related information of the terminal devices in the collaborative set, and then exchanges the scheduling strategy with the network devices connected to it.

[0127] As can be seen from the above definition, in a collaborative set, a terminal can have one or more transmit TRPs. And, when the number of transmit TRPs of the terminal is one, the transmit TRP of the terminal is the service TRP of the terminal. When the number of transmit TRPs of the terminal is multiple, one of the multiple transmit TRPs of the terminal (for example, the transmit TRP corresponding to the optimal RSRP) is the service TRP of the terminal, and the other TRPs are the collaborative TRPs of the terminal.

[0128] (12) Beam. Among them, beam and beam pair link (BPL) are introduced into the communication system. Beam is a communication resource. Beam can be divided into transmit beam and receive beam. The technology for forming the beam can be beamforming technology or other technical means. Beamforming includes transmit beamforming and receive beamforming.

[0129] Transmit beam: The transmitting end device transmits a signal with a certain beamforming weight, so that the transmitted signal forms a beam with spatial directivity. In the uplink direction, the transmitting end device can be a terminal; in the downlink direction, the transmitting end device can be a network device.

[0130] Receive beam: The receiving device receives the signal with a certain beamforming weight, so that the received signal forms a beam with spatial directivity. In the uplink direction, the receiving device can be a network device; in the downlink direction, the receiving device can be a terminal.

[0131] Transmit beamforming: When a transmitting device with an antenna array transmits a signal, a specific amplitude and phase are set on each antenna element of the antenna array so that the transmitted signal has a certain spatial directivity, that is, the signal power is high in some directions and low in some directions. The direction with the highest signal power is the direction of the transmit beam. The antenna array includes multiple antenna elements, and the specific amplitude and phase attached are the beamforming weights.

[0132] Receive beamforming: When a receiving device with an antenna array receives a signal, a specific amplitude and phase are set on each antenna element of the antenna array so that the power gain of the received signal has directionality, that is, the power gain is high when receiving signals in certain directions, and low when receiving signals in other directions. The direction with the highest power gain when receiving a signal is the direction of the receive beam. The antenna array includes multiple antenna elements, and the specific amplitude and phase added are the beamforming weights.

[0133] Optionally, using a certain transmit beam to send a signal can be understood as using a certain beamforming weight to send a signal.

[0134] Optionally, receiving a signal using a receiving beam may be understood as receiving a signal using a certain beamforming weight.

[0135] Generally, different beams can be considered as different resources. The same information or different information can be sent using (or through) different beams. A beam pair is based on the concept of beams. A beam pair usually includes a transmit beam of a transmitting device and a receive beam of a receiving device.

[0136] The following will take the network device as a base station as an example. Figure 1a to Figure 1c The implementation content shown in the figure provides an exemplary description of the implementation process of the beam. Generally, in communication systems with higher frequency bands, base stations (and terminals in some frequency bands) usually use large-scale array antennas (for example, more than 500 to 1,000 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 the implementation method of the base station, the same large array, different frequency bands and different array sizes use different array weighting methods (that is, different beamforming methods), which can be roughly divided into the following three categories according to the implementation scheme of beamforming.

[0137] One implementation method is digital beamforming (DBF), whose basic structure is as follows: Figure 1a As shown, each or a group of antenna elements is directly connected to a digital channel. This structure is a typical structure of massive multiple-input multiple-output (massive MIMO) in the low-frequency band. Since each antenna signal is directly converted to the digital domain, the subsequent array weighting is performed in the digital domain, so it is called digital beamforming. The digital domain signal processing has the highest degree of freedom and can support very complex signal processing methods. Therefore, under the same array scale, the performance of the DBF architecture is also the best. On the other hand, due to the high power consumption and cost of digital to analog converters (DAC) / analog to digital converters (ADC) (especially under large bandwidth conditions). Generally speaking, under the same array scale conditions, the cost of DBF is also the highest.

[0138] Another implementation method is analog beamforming (ABF), whose structure is as follows: Figure 1bAs shown, each or a group of antenna units is connected to an analog phase shifter, and then multiple antenna units are combined in the analog domain and passed through a digital-to-analog / analog-to-digital converter. Compared with DBF, the entire ABF array corresponds to only one digital-to-analog / analog-to-digital converter, so the biggest advantage of the ABF architecture is low cost and power consumption. The bottleneck of ABF is also obvious. The phase shifter setting in the analog domain determines the direction of the beam after beamforming. Since the signal is directly combined in the analog domain, it cannot be weighted by digital signal processing like DBF. ABF must pre-configure the phase shifter setting during transmission and reception (that is, point the analog beam to the target terminal). This process needs to be completed through beam scanning during the link establishment phase, which brings additional delays. Generally speaking, once the analog beam is blocked or moved to cause misalignment, the link quality of the system will rapidly degrade or even terminate, so the communication reliability of ABF is not as good as DBF.

[0139] Another implementation method is hybrid beamforming (HBF), whose structure is as follows: Figure 1c The figure shows an intermediate form between ABF and DBF. The figure shows a HBF architecture with 3 channels and 2 analog phase shifters for each channel. On the one hand, HBF has a certain number of digital ports to support digital beamforming, and each digital port drives an ABF subarray. Compared with ABF, at the same array size, the analog subarray driven by each digital channel is smaller ( Figure 1c 4 vs Figure 1b 6 in 1), so the beam is wider, the reliability is better, and the beam scanning overhead is smaller. Generally, the ratio of HBF digital ports and analog phase shifters is inconsistent with different frequencies and system design requirements. For example, the number of digital ports in the high-frequency band is very small (4 to 16), and the analog phase shifters corresponding to a single digital channel are more (16 to 32), which is closer to ABF, while the low-frequency band system has more digital ports (32 to 128), and the analog phase shifters for a single digital channel are fewer (for example, 2 to 10).

[0140] See also Figure 2 , is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 2 As shown, 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 Figure 2 110a and 110b in the figure, collectively referred to as 110), and may also include at least one terminal (such as Figure 2 RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment ( Figure 2(not shown in the figure). The terminal 120 is connected to the RAN node 110 by wireless means, and the RAN node 110 is connected to the core network 200 by wireless or wired means. 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 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 terminals and RAN nodes and RAN nodes may be connected to each other by wired or wireless means.

[0141] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, and a future radio access system defined in the 3rd generation partnership project (3GPP). RAN100 may also include two or more of the above-mentioned different radio access systems. RAN100 may also be an open RAN (O-RAN).

[0142] RAN node, also known as radio access network equipment, RAN entity or access node, is used to help terminals access the communication system wirelessly. In one application scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in the fifth generation (5G) mobile communication system, a next generation NodeB in the sixth generation (6G) mobile communication system, or a base station in a future mobile communication system. RAN nodes can be macro base stations (such as Figure 2 110a), or a micro base station or an indoor station (such as Figure 2 110b) in the figure, it can also be a relay node or a donor node.

[0143] In another application scenario, the cooperation of multiple RAN nodes can be used to help the terminal achieve wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU) or a radio unit (RU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned various protocol layers, please refer to the relevant technical specifications of 3GPP. RU can be used to implement the transceiver function of radio frequency signals. CU and DU can be two independent RAN nodes, or they can be integrated in the same RAN node, such as integrated in a baseband unit (BBU). RU can be included in a radio frequency device, 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.

[0144] In different systems, RAN nodes may have different names. For example, in an O-RAN system, CU may be called an open CU (open CU, O-CU), DU may be called an open DU (open DU, O-DU), and RU may be called an open RU (open RU, O-RU). The RAN node in the embodiment 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 a 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 the convenience of description, the following description takes a base station as an example of a RAN node.

[0145] A terminal is a device with wireless transceiver function, which can send signals to a base station or receive signals from a base station. A terminal can also be called a terminal device, user equipment (UE), a mobile station, a mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0146] Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0147] The roles of the base station and the terminal can be relative, for example, Figure 2 The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. Figure 2 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 2 120a-120j in the figure can be called communication devices with terminal functions.

[0148] Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate 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.

[0149] 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 including the base station function. The control subsystem including the base station function 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 a modem) in the terminal, or by a device including the terminal function.

[0150] In wireless communication systems (such as Figure 2 In the communication system shown in FIG. 1 , MIMO technology, as a key technology for wireless communication, can be used to meet the high-speed transmission requirements. Taking the communication process between a network device and a terminal device as an example, the network device performs channel measurement through a reference signal to obtain channel state information (CSI) (or channel information). Thereafter, the network device can use the channel information to calculate the precoding information between the network device and the terminal device, and the network device and the terminal device can subsequently implement MIMO communication through the precoding information.

[0151] The following is an example in which the network device is a base station and the terminal device is a UE. The process of the UE reporting CSI to the base station can be as follows: Figure 3a It should be understood that Figure 3a This is only an example of how a base station obtains CSI.

[0152] exist Figure 3a In the process of UE reporting CSI to the base station, the process includes the following steps:

[0153] Step 1. The base station sends channel measurement configuration information.

[0154] Step 2. The base station sends a reference signal (RS) for channel measurement.

[0155] Step 3. The UE performs measurement according to 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). Exemplarily, the CSI report includes one or more of PMI, CQI, RI, etc.

[0156] Step 4. The base station sends data according to the CSI report fed back by the UE.

[0157] 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 of data for transmission to the UE based on the PMI in the CSI report fed back by the UE in step 3.

[0158] Step 5: The base station sends DCI, and the UE receives and demodulates downlink data based on the received DCI.

[0159] At present, MIMO technology is a communication technology used to improve user experience. At the same time, the application of MIMO technology can also increase the average capacity of the cell. In the MIMO system, in order to ensure a higher user experience, the deployment of network equipment may be gradually encrypted. However, in the MIMO system, the signals sent by different network devices to different terminal devices may cause increased interference as the deployment of network devices is encrypted. For example, taking the network device as TRP as an example, when the terminal device communicates with a certain TRP, the signals of other TRPs will be regarded as interference signals; accordingly, when the TRP deployment is gradually encrypted, the possibility of the terminal device being interfered during the communication process will gradually increase.

[0160] Therefore, how to increase capacity and reduce interference is a technical problem that needs to be solved urgently.

[0161] In a possible implementation, different network devices can cooperate to reduce interference. For example, different base stations can be called different TRPs. Figure 3bTaking the scenario shown as an example, TRP1, TRP2 and TRP3 can communicate with the same terminal device in a collaborative manner. For example, different TRPs can collaborate in the manner of 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 in the manner of CJT, where different TRPs can send the same data to the same terminal device, and can convert the interference between different TRPs into the communication signal (i.e., useful signal) of the terminal device to obtain the gain of reducing interference. However, in the current implementation process 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 process of CJT, multiple TRPs jointly perform scheduling, time-frequency domain resource allocation, and joint weight calculation, which has a high implementation complexity, and the performance is greatly affected by the calibration accuracy, measurement accuracy, and non-ideal factors of the transmission network, and the performance that can be obtained in practice is also relatively limited.

[0162] In order to solve the above problems, the present application provides a method for configuring reference signal resources and related equipment, which are used in M ​​antenna port groups (also referred to as antenna port sets), 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) of terminal devices, and then reduce interference through CJT and NCJT to improve communication efficiency. The following will be described in detail with reference to the accompanying drawings.

[0163] See also Figure 4 , is a schematic diagram of a method for configuring reference signal resources provided in the present application, and the method includes the following steps.

[0164] It should be noted that Figure 4 In the example, the terminal device and the network device are used as the execution subjects of the interaction diagram to illustrate the method, but the present application does not limit the execution subjects of the interaction diagram. Figure 4 The terminal device that executes S401-S403 in the corresponding implementation method can be the terminal device, or a chip, chip system, or processor that supports the terminal device to implement the method, or a logic module or software that can implement all or part of the terminal device functions. Figure 4 The network device that performs S401-S403 in the corresponding implementation may be the network device, or a chip, a chip system, or a processor that supports the network device to implement the method, or may be replaced by a logic module or software that can implement all or part of the network device functions. Figure 5 In the implementation process shown, it can be executed by a 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 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 logic 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).

[0165] S401. The network device sends configuration information, and the terminal device receives the configuration information accordingly.

[0166] In step S401, the configuration information is used to configure resources of 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.

[0167] It should be understood that the configuration information may include configuration information of sending resources for N groups of downlink reference signals, and configuration information of reporting resources for N groups of downlink reference signals. Among them, the configuration information of sending resources can be used to configure the antenna port resources for the network device to send downlink reference signals in step S402, such as port information (such as port identifiers, port indexes, etc.) of multiple antenna ports for sending N groups of downlink reference signals. In addition, the configuration information of 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 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.

[0168] In addition, the antenna ports included in the M antenna port groups are antenna ports for sending N groups of downlink reference signals. Among them, the M antenna port groups include multiple antenna ports, and the configuration information in step S401 may also 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 by means of CJT, and determine, based on the indication information, that different antenna port groups in the M antenna port groups communicate by means of NCJT.

[0169] 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.

[0170] 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, the P correspondences between the multiple antenna ports of the network devices in P (P is a positive integer) geographical areas and the M antenna port groups can 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 through 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.

[0171] 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.

[0172] Exemplarily, taking the downlink reference signal as CSI-RS as an example, the CSI-RS configuration information received by the terminal device can configure the CSI-RS through the resource configuration (resourceConfig), resource set (resourceSet) and resource (resource) in the RRC message. Generally, a resourceConfig may include one or more resourceSets, and a resourceSet may 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 N groups of downlink reference signals, each group of downlink reference signals can include one or more downlink reference signals. Optionally, in the case that 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.

[0173] 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, 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 sending ports of the N groups of downlink reference signals are located in the M antenna port groups.

[0174] 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.

[0175] 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.

[0176] S402. The network device sends a downlink reference signal. Correspondingly, the terminal device receives the downlink reference signal. The network device sends N groups of downlink reference signals through M antenna port groups based on the configuration information in step S401. As can be seen from the description of the above configuration information, in step S402, the network device sends N groups of downlink reference signals through each antenna port group in the M antenna port groups to implement the process of sending N groups of downlink reference signals through the M antenna port groups.

[0177] It should be understood that the M antenna port groups may be located in one or more network devices. Figure 4 The implementation process shown takes the M antenna port groups located in the same network device as an example. Wherein, in the case where the M antenna ports are located in multiple network devices, that is, each network device may include one or more antenna port groups in the M antenna port groups; accordingly, in step S402, the multiple network devices may obtain the configuration information of their respective antenna port groups through the scheduling process of one of the network devices or the negotiation process between the multiple network devices, and the multiple network devices send part of the downlink reference signals of the N groups of downlink reference signals through their respective antenna port groups.

[0178] 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.

[0179] 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 can subsequently send downlink data to the terminal device based on the downlink channel information. The implementation process can refer to the aforementioned Figure 3a The implementation process is shown.

[0180] In one possible implementation, 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.

[0181] 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.

[0182] Optionally, downlink reference signals sent by at least two antenna ports included in any one of the M antenna port groups and 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.

[0183] Specifically, during the sending process of the downlink reference signal in step S402, different antenna ports in any group of the M antenna ports may send the downlink reference signal through CJT, and antenna ports in different antenna port groups among the M antenna ports may send the downlink reference signal through NCJT, so that the sending process of the N groups of downlink reference signals can obtain the joint gain of CJT and NCJT.

[0184] In one possible implementation, Figure 4 As shown in step S402, 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.

[0185] In another possible implementation, the downlink reference signals of the M antenna port groups may come from different network devices, such as Figure 5 As shown, Figure 5 The implementation process of step S501 can refer to Figure 4 The implementation process of step S401 is shown as follows: Figure 4 Step S402 can be performed by Figure 5 Step S502a and step S502b are implemented as shown. Figure 4 Step S403 can be performed by Figure 5 Step S503a and step S503b are implemented as shown.

[0186] like Figure 5As shown, the above-mentioned different network devices may include a network device where a service TRP is located, and a network device where a collaborative TRP is located. Among them, the terminal device may receive a downlink reference signal of a part of the M antenna port groups from the network device where the service TRP is located in step S502a, and the terminal device may also receive a downlink reference signal of the other part of the M antenna port groups from the network device where the collaborative TRP is located in step S502b. Correspondingly, the terminal device may send a part of the first information (used to indicate the measurement result of the downlink reference signal of a part of 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 result of the downlink reference signal of the other part of the M antenna port groups) to the network device where the collaborative TRP is located in step S503b.

[0187] It should be understood that Figure 5 In the implementation process shown, 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 The description is only taken as an example that one or more collaborative TRPs are located in the same network device.

[0188] Optionally, in Figure 5 In the embodiment, 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). The network device is called the service network device, and the service 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 service network device 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.

[0189] exist Figure 4 or Figure 5 In the implementation process shown in the figure, the N groups of downlink reference signals received by the terminal device may be sent in various ways. Figure 6a and Figure 6b The implementation process shown is described as an example.

[0190] In implementation mode 1, 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 (TRP).

[0191] 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 with 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 by means of CJT, and different antenna port groups in the M antenna ports can communicate with the terminal device by means of NCJT. Therefore, the above technical solution can use TRP as the granularity, and can obtain the joint gain of CJT and NCJT between different TRPs.

[0192] For example, N TRPs include Figure 6a For example, the 8 TRPs in the example (i.e., N is 8) can be Figure 6a TRP1, TRP2...TRP8 in the 8 TRPs. Among them, these 8 TRPs respectively send eight groups (that is, N groups are eight groups) of downlink reference signals in step S402 (or, step S502a and step S502b), so that the terminal device can receive 8 groups of downlink reference signals. In addition, each of the 8 TRPs may include one or more antenna ports for sending downlink reference signals.

[0193] Optionally, in implementation mode 1, a downlink reference signal from a TRP can be understood as one of the N groups of downlink reference signals, that is, any one of the M antenna port groups can 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.

[0194] In a second implementation method, among the N groups of downlink reference signals received by the terminal device, different groups of downlink reference signals are sent through different beams.

[0195] Specifically, in implementation method 2, N groups of downlink reference signals are respectively sent through N beams, for example, N groups of downlink reference signals correspond one to one with N beams. Among them, one or more beams in the N beams may correspond to one TRP, that is, the N beams correspond to K TRPs respectively, and 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 may constitute one of the antenna port groups in the M antenna port groups, and the antenna ports corresponding to the other one or more beams in the N beams may constitute another antenna port group in the M antenna port groups; and so on, the antenna ports corresponding to the N beams may constitute M antenna port groups. Among them, the antenna ports in each antenna port group in the M antenna ports may communicate with the terminal device in a CJT manner, and different antenna port groups in the M antenna ports may communicate with the terminal device in a NCJT manner. Thus, the above technical solution can use beams as granularity, and can obtain the joint gain of CJT and NCJT between different beams.

[0196] 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.

[0197] For example, N beams include Figure 6b Take the 8 (i.e. N is 8) as an example. Figure 6b In the example, 8 TRPs are still used, where each TRP includes 4 beams. The 4 beams can be Figure 6b There are four beams corresponding to beam identifier (identifier, ID) 1, beam ID 2, beam ID 3 and beam ID 4. Each TRP can 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.

[0198] exist Figure 6a and Figure 6bIn the example shown, taking 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.

[0199] like Figure 6a and Figure 6b As shown, 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. Moreover, different antenna port groups in the three antenna port groups, the first antenna port group, the second antenna port group and the third antenna port group, send downlink data to the terminal device through NCJT to obtain the joint gain of CJT and NCJT.

[0200] Optionally, each TRP can send a downlink reference signal on one or more beams. Figure 6b In the example in which each TRP sends 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.

[0201] Optionally, the multiple antenna ports corresponding to the M antenna port groups may be located in multiple TRPs (eg Figure 6a and Figure 6b 8 TRPs in the example shown), the multiple TRPs here can be located in the same network device (such as the same physical site), or can be located in two or more network devices (such as two or more physical sites), which is not limited here.

[0202] 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.

[0203] In a 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. Wherein, 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.

[0204] Exemplarily, the terminal device can demodulate and detect the received CSI-RS to calculate the signal reception quality information (such as SINR, RSRP, etc.), and take the signal reception quality information as SINR as an example, calculate the modulation coding scheme (MCS) under different RIs according to SINR, and determine the RI with greater spectrum efficiency (for example, maximum spectrum efficiency, or spectrum efficiency greater than a threshold) according to the MCS as the RI included in the measurement result of the downlink reference signal.

[0205] Specifically, different antenna port groups in the M antenna port groups may communicate with the terminal device in the 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 matching 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.

[0206] Optionally, in the M antenna port groups, each group includes at least two antenna ports. Among them, the RIs of the antenna ports included in different antenna port groups in the M antenna port groups can be respectively recorded as RI_0...RI_M-1. Accordingly, the sum of the RIs corresponding to different antenna port groups in the M antenna port groups (recorded as RI_sum) can be understood as the sum of the RIs corresponding to each antenna port group in the M antenna port groups, that is, RI_sum satisfies:

[0207]

[0208] Optionally, in the first information, the RIs corresponding to different antenna port groups in the M antenna port groups may be RIs of each antenna port group determined based on signal reception quality information. Alternatively, when the sum of the RIs determined based on the 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 different antenna port groups, for example, values ​​reallocated based on the values ​​of the signal to interference plus noise ratio (SINR) of different antenna port groups, values ​​reallocated based on an equal-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 preventing the terminal device from failing to demodulate the downlink data sent based on the precoding information.

[0209] based on Figure 4 Technical solution, after the terminal device receives the resources for configuring N groups of downlink reference signals in step S401, the terminal device can send the 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 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 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.

[0210] 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 those 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 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.

[0211] See also Figure 7 The embodiment of the present application provides a communication device 700, which can implement the functions of the communication device (the communication device is a terminal device or a network device) in the above method embodiment, and thus can also achieve the beneficial effects of the above method embodiment. In the embodiment of the present application, the communication device 700 can be a communication device, or an integrated circuit or component inside the communication device, such as a chip.

[0212] Optionally, Figure 7 The transceiver unit 702 shown can be Figure 1a , Figure 1b or Figure 1c The structure shown is implemented.

[0213] In a possible implementation, when the device 700 is used to perform the aforementioned Figure 4 / Figure 5When the method is executed by the terminal device in the related embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to receive configuration information, and the configuration information is used to configure the 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, and 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 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 702 is also used to send first information, and the first information is used to indicate the measurement results of the downlink reference signals of the M antenna port groups.

[0214] In a possible implementation, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs.

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

[0216] In one possible implementation, 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.

[0217] In a possible implementation manner, 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.

[0218] 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.

[0219] In a possible implementation manner, the downlink reference signals of any group in the M antenna port groups are downlink reference signals of different groups in the N groups of downlink reference signals.

[0220] In a possible implementation manner, 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.

[0221] In a 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.

[0222] 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.

[0223] In a possible implementation, when the device 700 is used to perform the aforementioned Figure 7 And the method executed by the network device in the 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, the configuration information is used to configure the 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 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; the transceiver unit 702 is used to send the configuration information.

[0224] In a possible implementation manner, the transceiver unit 702 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.

[0225] In a 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; the 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; the 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.

[0226] In a possible implementation, different groups of downlink reference signals in the N groups of downlink reference signals are respectively sent through N TRPs.

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

[0228] In one possible implementation, 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.

[0229] In a possible implementation manner, 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.

[0230] 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.

[0231] In a possible implementation manner, the downlink reference signals of any group in the M antenna port groups are downlink reference signals of different groups in the N groups of downlink reference signals.

[0232] In a possible implementation manner, 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.

[0233] In a 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.

[0234] 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.

[0235] It should be noted that the information execution process and other contents of the units of the above-mentioned communication device 700 can be specifically referred to the description in the method embodiment shown in the above-mentioned application, and will not be repeated here.

[0236] See also Figure 8 , is another schematic structural diagram of a communication device 800 provided in the present application, wherein 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.

[0237] Optionally, Figure 8 The transceiver unit 802 shown can be Figure 1a , Figure 1b or Figure 1c The structure shown is implemented.

[0238] in, Figure 7 The transceiver unit 702 shown may be a communication interface, which may be Figure 8 The input / output interface 802 in the communication interface may include an input interface and an output interface. Alternatively, the communication interface may also be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0239] Optionally, the input and output interface 802 is used to receive configuration information, the configuration information being 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 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; wherein different antenna ports in any group among the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups among 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, where the first information is used to indicate measurement results of downlink reference signals of the M antenna port groups.

[0240] 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 among the N groups of downlink reference signals are respectively sent through different antenna port groups among M antenna port groups, and M is an integer less than or equal to N; wherein different antenna ports in any group among the M antenna port groups are used to transmit downlink data through CJT, and different antenna port groups among 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.

[0241] Among them, the logic circuit 801 and the input and output interface 802 can 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 repeated here.

[0242] In one possible implementation, Figure 7 The processing unit 701 shown can be Figure 8 The logic circuit 801 in.

[0243] Optionally, the logic circuit 801 may be a processing device, and the functions of the processing device may be partially or completely implemented by software. The functions of the processing device may be partially or completely implemented by software.

[0244] 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.

[0245] Alternatively, the processing device may include only a processor. A memory for storing a computer program is located outside the processing device, and the processor is connected to the memory via a circuit / wire to read and execute the computer program stored in the memory. The memory and the processor may be integrated together, or may be physically independent of each other.

[0246] 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 (FPGA), application specific integrated circuits (ASIC), system on chip (SoC), central processor unit (CPU), network processor (NP), digital signal processor (DSP), microcontroller unit (MCU), programmable logic device (PLD) or other integrated chips, or any combination of the above chips or processors.

[0247] See also Fig. 9 , is a communication device 900 involved in the above-mentioned embodiments provided in an embodiment of the present application, and the communication device 900 can specifically be a communication device as a terminal device in the above-mentioned embodiments.

[0248] Among them, a possible logical structure diagram of the communication device 900 is shown, and the communication device 900 may include but is not limited to at least one processor 901 and a communication port 902.

[0249] in, Figure 7 The transceiver unit 702 shown may be a communication interface, which may be Fig. 9 The communication port 902 in the embodiment may include an input interface and an output interface. Alternatively, the communication port 902 may also be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0250] Optionally, Fig. 9 The communication port 902 shown can be Figure 1a , Figure 1b or Figure 1c The structure shown is implemented.

[0251] 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 .

[0252] 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 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 a computing function, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0253] It should be noted that Fig. 9 The communication device 900 shown 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. Fig. 9 The specific implementation methods of the communication device shown can all refer to the description in the aforementioned method embodiment, and will not be described in detail here.

[0254] See also Fig.10 , is a schematic diagram of the structure of the communication device 1000 involved in the above embodiment provided in the embodiment of the present application. The communication device 1000 may specifically be a communication device as a network device in the above embodiment. The structure of the communication device may refer to Fig.10 The structure shown.

[0255] 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, through 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.

[0256] in, Figure 7 The transceiver unit 702 shown may be a communication interface, which may be Fig.10The network interface 1014 in the embodiment may include an input interface and an output interface. Alternatively, the network interface 1014 may also be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0257] Optionally, Fig.10 The network interface 1014 shown can be Figure 1a , Figure 1b or Figure 1c The structure shown is implemented.

[0258] The processor 1011 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program, for example, to support the communication device to perform the actions described in the embodiment. The communication device may include a baseband processor and a central processing unit. The baseband processor is mainly used to process the communication protocol and communication data, and the central processing unit is mainly used to control the entire terminal device, execute the software program, and process the data of the software program. Fig.10 The processor 1011 in the embodiment can integrate the functions of the baseband processor and the central processor. It can be understood by those skilled in the art that the baseband processor and the central processor can also be independent processors, which are interconnected through technologies such as buses. It can be understood by those skilled in the art that the terminal device can include multiple baseband processors to adapt to different network formats, and the terminal device can include multiple central processors to enhance its processing capabilities. The various components of the terminal device can be connected through various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The central processor can also be described as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data can be built into the processor, or it can be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.

[0259] The memory is mainly used to store software programs and data. The memory 1012 can be independent and connected to the processor 1011. Optionally, the memory 1012 can be integrated with the processor 1011, for example, integrated into a chip. Among them, the memory 1012 can store program codes for executing the technical solutions of the embodiments of the present application, and the execution is controlled by the processor 1011. The various types of computer program codes executed can also be regarded as drivers of the processor 1011.

[0260] Fig.10Only one memory and one processor are shown. 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, etc. 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 embodiments of the present application.

[0261] The transceiver 1013 can be used to support the reception or transmission of radio frequency signals between the communication device and the terminal, and 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, and 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 the digital intermediate frequency signal to the processor 1011, so that the processor 1011 further processes the digital baseband signal or the 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 a digital intermediate frequency signal from the processor 1011, and convert the modulated digital baseband signal or the digital intermediate frequency signal into a radio frequency signal, and send 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 processing on the RF signal to obtain a digital baseband signal or a digital intermediate frequency signal, and the order of the down-mixing and analog-to-digital conversion processing is adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing and digital-to-analog conversion processing on the modulated digital baseband signal or digital intermediate frequency signal to obtain a RF signal, and the order of the up-mixing and digital-to-analog conversion processing is adjustable. The digital baseband signal and the digital intermediate frequency signal can be collectively referred to as a digital signal.

[0262] 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 for implementing a receiving function may be regarded as a receiving unit, and a device in the transceiver unit for implementing a sending function may be regarded as a sending unit, that is, the transceiver unit includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0263] It should be noted that Fig.10 The communication device 1000 shown can be specifically used to implement the steps implemented by the network device in the aforementioned method embodiment, and achieve the corresponding technical effects of the network device. Fig.10 The specific implementation methods of the communication device 1000 shown can all refer to the description in the aforementioned method embodiment, and will not be repeated here.

[0264] 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.

[0265] 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.

[0266] The 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 for 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.

[0267] An embodiment of the present application also provides a communication system, which includes the terminal device and the network device in any of the above embodiments.

[0268] In the several embodiments provided in the present 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 only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, 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.

[0269] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0270] 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.

[0271] 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. The terminal chip receives information from the base station, which can be understood as the information is first received by other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the terminal chip by these modules. The terminal chip sends information to the base station, which can be understood as the information is first sent to other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the base station by these modules.

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

[0273] It is understandable that the processor in the embodiments of the present application may be a central processing unit (CPU), or 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.

[0274] 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, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium 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 a component of the processor. The processor and the 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 the storage medium can also be present in a base station or a terminal as discrete components.

[0275] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed 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 instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0276] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0277] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal 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.

Images