Communication method and communication apparatus

Abstract

Provided in the present application is a communication method. The method comprises: a terminal device receiving a first message and a second message from a network device, wherein the first message instructs the terminal device to receive a first signal, the second message indicates a first resource set comprising a first resource and a second resource, a time domain resource of the first resource is located on a subband full duplex (SBFD) time unit, and a time domain resource of the second resource is located on a non-SBFD time unit. In addition, the terminal device receives the first signal on resources other than the first resource and the second resource.

Description

Communication method and communication device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 17, 2023, with application number 202311550941.8 and application name “A Communication Method and Communication Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and in particular to a communication method and a communication device. Background Art

[0003] Time division duplex (TDD) is widely used in the deployment of new radio (NR) wireless communication systems in the fifth generation (5G) mobile communication system. Limited uplink time domain resource allocation leads to reduced uplink coverage and increased latency in TDD. One possible method to enhance uplink coverage is to adopt subband full duplex (SBFD). SBFD divides the frequency band on the downlink symbol into one or more uplink subbands and one or more downlink subbands, and allows uplink transmission on the uplink subband of the downlink symbol.

[0004] Specifically, the antenna configuration on the SBFD network device side includes: the number of transceiver units (TxRUs) on the SBFD time unit and the non-SBFD time unit is different, the channel environment and interference environment on the SBFD time unit and the non-SBFD time unit are different, and the terminal device needs to measure and report the channel state information (CSI) on the SBFD time unit and the downlink (or flexible) time unit respectively. Therefore, how to determine the time-frequency resources that are not used for receiving or sending signals in this antenna configuration scenario has become an urgent problem to be solved.

[0005] Summary of the Invention

[0006] In order to solve the above technical problems, the present application provides a communication method and a communication device, so as to determine the time-frequency resources that cannot be used for receiving or sending signals in scenarios where the channel environment and interference environment on the SBFD time unit and the non-SBFD time unit are different.

[0007] In a first aspect, a communication method is provided. The method may be executed by a terminal device, or by a chip or circuit, etc., which is not limited in this application.

[0008] The communication method includes: receiving a first message, the first message indicating reception of a first signal; receiving a second message, the second message indicating a first resource set including a first resource and a second resource, the time domain resources of the first resource being located on an SBFD time unit, and the time domain resources of the second resource being located on a non-SBFD time unit; and receiving the first signal on resources other than the first resource and the second resource.

[0009] Based on the above technical solution, taking the execution subject as a terminal device as an example, the terminal device receives a first message and a second message, the first message indicates that the terminal device receives a first signal, and the second message indicates a first resource set including a first resource and a second resource. The terminal device can receive the first signal on resources other than the first resource and the second resource (such as receiving a physical downlink shared channel (PDSCH)). Specifically, the time-frequency resources of the first resource are located on the SBFD time unit, and the time-frequency resources of the second resource are located on the non-SBFD time unit. It can be understood that in this technical solution, the network device can configure relevant resources for the SBFD time unit and the non-SBFD time unit respectively through the second message, so as to realize the configuration of required resources on different time units in scenarios with different channel environments and interference environments on the SBFD time unit and the non-SBFD time unit, thereby improving the flexibility of resource configuration, and based on the configured resources, the time-frequency resources that cannot be used to receive or send signals can be determined.

[0010] In combination with the first aspect, in some implementations of the first aspect, the first resource set includes one or more of the following: two periodic zero-power channel state information reference signal ZP CSI-RS resource sets, two semi-persistent ZP CSI-RS resource set tables, or two aperiodic ZP CSI-RS resource set tables, the two periodic ZP CSI-RS resource sets including a first periodic ZP CSI-RS resource set and a second periodic ZP CSI-RS resource set, the two semi-persistent ZP CSI-RS resource set tables including a first semi-persistent ZP CSI-RS resource set table and a second semi-persistent ZP CSI-RS resource set table, the two aperiodic ZP CSI-RS resource set tables including a first aperiodic ZP CSI-RS resource set table and a second aperiodic ZP CSI-RS resource set table, wherein the first resource is included in the first periodic ZP CSI-RS resource set, and the second resource is included in the second periodic ZP CSI-RS resource set; or, the first resource is included in the first semi-persistent ZP CSI-RS resource set table, and the second resource is included in the second semi-persistent ZP CSI-RS resource set table; or, the first resource is included in the first aperiodic ZP CSI-RS resource set table, and the second resource is included in the second aperiodic ZP CSI-RS resource set table.

[0011] Based on the above technical solution, in order to configure relevant resources for SBFD time units and non-SBFD time units respectively, the network device can configure one or more of two periodic zero-power channel state information reference signal ZP CSI-RS resource sets, two semi-persistent ZP CSI-RS resource set tables, or two aperiodic ZP CSI-RS resource set tables through a second message, wherein the number of ZP CSI-RS resources included in each ZP CSI-RS resource set is the same as the number of ZP CSI-RS resources included in the current ZP CSI-RS resource set. Compared with the existing ZP CSI-RS resource configuration method (configuring one or more of a periodic zero-power channel state information reference signal ZP CSI-RS resource set, a semi-persistent ZP CSI-RS resource set table, or an aperiodic ZP CSI-RS resource set table), this technical solution is equivalent to expanding the number of ZP CSI-RS resources by configuring multiple ZP CSI-RS resource set tables, so that the number of ZP CSI-RS resources meets the requirements of SBFD time units and non-SBFD time units.

[0012] In combination with the first aspect, in certain implementations of the first aspect, if the first resource is included in the first semi-persistent ZP CSI-RS resource set table and the second resource is included in the second semi-persistent ZP CSI-RS resource set table, the method further includes: receiving a third message, the third message including a first field and a second field, wherein the first field activates the first resource in the first semi-persistent ZP CSI-RS resource set table and the second field activates the second resource in the second semi-persistent ZP CSI-RS resource set table; or, the first field deactivates the third resource in the first semi-persistent ZP CSI-RS resource set table and the second field deactivates the fourth resource in the second semi-persistent ZP CSI-RS resource set table.

[0013] Based on the above technical solution, if the first resource and the second resource are resources in the semi-persistent ZP CSI-RS resource set table, the network device may activate the semi-persistent ZP CSI-RS resource set through a third message.

[0014] In combination with the first aspect, in certain implementations of the first aspect, if the first resource is included in the first semi-persistent ZP CSI-RS resource set table and the second resource is included in the second semi-persistent ZP CSI-RS resource set table, the method further includes: receiving a third message #1, the third message #1 including a first field #1, the first field #1 activating the first resource in the first semi-persistent ZP CSI-RS resource set table and activating the second resource in the second semi-persistent ZP CSI-RS resource set table; or, the first field #1 deactivates the third resource in the first semi-persistent ZP CSI-RS resource set table and deactivates the fourth resource in the second semi-persistent ZP CSI-RS resource set table.

[0015] In combination with the first aspect, in some implementations of the first aspect, the third message includes a media access control (MAC) control element (CE).

[0016] In combination with the first aspect, in certain implementations of the first aspect, the MAC CE includes a first bit and a second bit. If the first bit takes a first value, it indicates that the ZP CSI-RS resource set in the first semi-persistent ZP CSI-RS resource set table or the second semi-persistent ZP CSI-RS resource set table is activated or deactivated according to the second bit; or, if the first bit takes a second value, it indicates that the ZP CSI-RS resource set in the first semi-persistent ZP CSI-RS resource set table and the second semi-persistent ZP CSI-RS resource set table is activated or deactivated.

[0017] In combination with the first aspect, in certain implementations of the first aspect, if the first resource is included in the first non-periodic ZP CSI-RS resource set table and the second resource is included in the second non-periodic ZP CSI-RS resource set table, the method also includes: receiving a fourth message, the fourth message including a third field and a fourth field, the third field triggering the first resource in the first non-periodic ZP CSI-RS resource set table, and the fourth field triggering the second resource in the second non-periodic ZP CSI-RS resource set table.

[0018] Based on the above technical solution, if the first resource and the second resource are resources in the aperiodic ZP CSI-RS resource set table, the network device may trigger the aperiodic ZP CSI-RS resource set through the fourth message.

[0019] In combination with the first aspect, in certain implementations of the first aspect, if the first resource is included in the first non-periodic ZP CSI-RS resource set table and the second resource is included in the second non-periodic ZP CSI-RS resource set table, the method also includes: the terminal device receives a fourth message #1 from the network device, the fourth message #1 includes a third field #1, and the third field #1 triggers the first resource in the first non-periodic ZP CSI-RS resource set table and the second resource in the second non-periodic ZP CSI-RS resource set table.

[0020] In combination with the first aspect, in some implementations of the first aspect, the fourth message includes downlink control information DCI.

[0021] In combination with the first aspect, in certain implementations of the first aspect, the DCI includes a first bit and a second bit. If the first bit takes a first value, it indicates that the ZP CSI-RS resource set in the first non-periodic ZP CSI-RS resource set table or the second non-periodic ZP CSI-RS resource set table is triggered according to the value of the second bit; or, if the first bit takes a second value, it indicates that the ZP CSI-RS resource set in the first non-periodic ZP CSI-RS resource set table and the second non-periodic ZP CSI-RS resource set table is triggered.

[0022] In combination with the first aspect, in certain implementations of the first aspect, the first resource set includes one or more of the following: a periodic non-zero power channel state information reference signal ZP CSI-RS resource set table, a semi-persistent ZP CSI-RS resource set table, or an aperiodic ZP CSI-RS resource set table, wherein the periodic ZP CSI-RS resource set table includes less than or equal to 2 ZP CSI-RS resource sets, the semi-persistent ZP CSI-RS resource set table includes less than or equal to 32 ZP CSI-RS resource sets, and the aperiodic ZP CSI-RS resource set table includes less than or equal to 6 or 7 ZP CSI-RS resource sets.

[0023] Based on the above technical solution, in order to configure relevant resources for SBFD time units and non-SBFD time units respectively, the network device can configure one or more of a periodic non-zero power channel state information reference signal ZP CSI-RS resource set table, a semi-persistent ZP CSI-RS resource set table, or a non-periodic ZP CSI-RS resource set table through a second message, wherein the number of ZP CSI-RS resource sets included in each ZP CSI-RS resource set table exceeds the number of ZP CSI-RS resource sets included in the current ZP CSI-RS resource set table. This technical solution is equivalent to expanding the number of ZP CSI-RS resources by configuring a ZP CSI-RS resource set table including a larger number of ZP CSI-RS resource sets, so that the number of ZP CSI-RS resources meets the requirements of SBFD time units and non-SBFD time units.

[0024] In combination with the first aspect, in certain implementations of the first aspect, if the first resource and the second resource are included in the semi-persistent ZP CSI-RS resource set table, the method further includes: receiving a fifth message, the fifth message including a fifth field and a sixth field, the fifth field activating the first resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field activating the second resource in the semi-persistent ZP CSI-RS resource set table; or, the fifth field deactivating the third resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field deactivating the fourth resource in the semi-persistent ZP CSI-RS resource set table.

[0025] In combination with the first aspect, in some implementations of the first aspect, the length of the fifth field and the length of the sixth field are both 5 bits.

[0026] In combination with the first aspect, in certain implementations of the first aspect, if the first resource and the second resource are included in the ZP CSI-RS resources in the non-periodic ZP CSI-RS resource set table, the method also includes: receiving a sixth message, the sixth message including a seventh field and an eighth field, the seventh field triggering the first resource in the non-periodic ZP CSI-RS resource set table, and the eighth field triggering the second resource in the non-periodic ZP CSI-RS resource set table.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the first resource set includes one or more of the following: a periodic ZP CSI-RS resource set, a semi-persistent ZP CSI-RS resource set table, or an aperiodic ZP CSI-RS resource set table, each of the ZP CSI-RS resource sets including less than or equal to 32 ZP CSI-RS resources.

[0028] Based on the above technical solution, in order to configure relevant resources for SBFD time units and non-SBFD time units respectively, the network device can configure one or more of a periodic non-zero power channel state information reference signal ZP CSI-RS resource set table, a semi-persistent ZP CSI-RS resource set table, or a non-periodic ZP CSI-RS resource set table through a second message, wherein the number of ZP CSI-RS resources included in each ZP CSI-RS resource set exceeds the ZP CSI-RS resource set included in the current ZP CSI-RS resource set. This technical solution is equivalent to expanding the number of ZP CSI-RS resources by configuring a ZP CSI-RS resource set including a large number of ZP CSI-RS resources, so that the number of ZP CSI-RS resources meets the requirements of SBFD time units and non-SBFD time units.

[0029] In combination with the first aspect, in certain implementations of the first aspect, the first resource set includes one or more of the following: a periodic non-zero power channel state information reference signal ZP CSI-RS resource set, a semi-persistent ZP CSI-RS resource set table, or an aperiodic ZP CSI-RS resource set table, wherein each of the ZP CSI-RS resource sets includes less than or equal to 16 ZP CSI-RS resources, each of the ZP CSI-RS resources includes a first ZP CSI-RS sub-resource and a second ZP CSI-RS sub-resource, the first resource belongs to the first ZP CSI-RS sub-resource, and the second resource belongs to the second ZP CSI-RS sub-resource.

[0030] Based on the above technical solution, in order to configure relevant resources for SBFD time units and non-SBFD time units respectively, the network device can configure a periodic non-zero power channel state information reference signal ZP CSI-RS resource set table, a semi-persistent ZP CSI-RS resource set table, or one or more of a non-periodic ZP CSI-RS resource set table through a second message, wherein each ZP CSI-RS resource includes greater than or equal to two sub-resources. This technical solution is equivalent to expanding the number of ZP CSI-RS resources by configuring a ZP CSI-RS resource including a large number of ZP CSI-RS sub-resources, so that the number of ZP CSI-RS resources meets the requirements of SBFD time units and non-SBFD time units.

[0031] In combination with the first aspect, in certain implementations of the first aspect, the first ZP CSI-RS sub-resource or the second ZP CSI-RS sub-resource includes at least one of the following parameters: a resource mapping parameter, a period, or an offset parameter.

[0032] In a second aspect, a communication method is provided. The method can be executed by a network device, or by a chip or circuit, etc., which is not limited in this application.

[0033] The communication method includes: sending a first message, where the first message indicates receiving a first signal; sending a second message, where the second message indicates a first resource set including a first resource and a second resource, where the time domain resources of the first resource are located on an SBFD time unit, and the time domain resources of the second resource are located on a non-SBFD time unit; and sending the first signal on resources other than the first resource and the second resource.

[0034] Specifically, possible forms of the first resource set can refer to the description of the first resource set in the first aspect, which will not be repeated here.

[0035] Exemplarily, the first resource set includes two semi-persistent ZP CSI-RS resource set tables, and the two semi-persistent ZP CSI-RS resource set tables include a first semi-persistent ZP CSI-RS resource set table and a second semi-persistent ZP CSI-RS resource set table. If the first resource is included in the first semi-persistent ZP CSI-RS resource set table and the second resource is included in the second semi-persistent ZP CSI-RS resource set table, the method also includes: sending a third message, the third message including a first field and a second field, the first field activates the first resource in the first semi-persistent ZP CSI-RS resource set table, and the second field activates the second resource in the second semi-persistent ZP CSI-RS resource set table; or, the first field deactivates the third resource in the first semi-persistent ZP CSI-RS resource set table, and the second field deactivates the fourth resource in the second semi-persistent ZP CSI-RS resource set table.

[0036] Exemplarily, the first resource set includes two non-periodic ZP CSI-RS resource set tables, and the two non-periodic ZP CSI-RS resource set tables include a first non-periodic ZP CSI-RS resource set table and a second non-periodic ZP CSI-RS resource set table. If the first resource is included in the first non-periodic ZP CSI-RS resource set table and the second resource is included in the second non-periodic ZP CSI-RS resource set table, the method also includes: sending a fourth message, the fourth message includes a third field and a fourth field, the third field triggers the first resource in the first non-periodic ZP CSI-RS resource set table, and the fourth field triggers the second resource in the second non-periodic ZP CSI-RS resource set table.

[0037] Exemplarily, the first resource set includes a semi-persistent ZP CSI-RS resource set table, and the semi-persistent ZP CSI-RS resource set table includes less than or equal to 32 ZP CSI-RS resource sets. If the first resource and the second resource are included in the semi-persistent ZP CSI-RS resource set table, the method also includes: sending a fifth message, the fifth message including a fifth field and a sixth field, the fifth field activates the first resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field activates the second resource in the semi-persistent ZP CSI-RS resource set table; or, the fifth field deactivates the third resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field deactivates the fourth resource in the semi-persistent ZP CSI-RS resource set table.

[0038] Exemplarily, the first resource set includes a non-periodic ZP CSI-RS resource set table, and the non-periodic ZP CSI-RS resource set table includes less than or equal to 6 or 7 ZP CSI-RS resource sets. If the first resource and the second resource are included in the non-periodic ZP CSI-RS resource set table, the method also includes: sending a sixth message, the sixth message including a seventh field and an eighth field, the seventh field triggers the first resource in the non-periodic ZP CSI-RS resource set table, and the eighth field triggers the second resource in the non-periodic ZP CSI-RS resource set table.

[0039] The technical effects of the method shown in the above second aspect and its possible design can refer to the technical effects in the first aspect and its possible design.

[0040] In a third aspect, a communication method is provided. The method may be executed by a terminal device, or by a chip or circuit, etc., which is not limited in this application.

[0041] The communication method includes: receiving first indication information, the first indication information indicating receiving a first signal on a first time-frequency resource; receiving second indication information, the second indication information indicating a first ZP CSI-RS resource, the first ZP CSI-RS resource being a time-frequency resource not used for receiving the first signal on a non-SBFD time unit; receiving third indication information, the third indication information indicating a second time-frequency resource, the second time-frequency resource being a subset of the first ZP CSI-RS resource, the second time-frequency resource being a time-frequency resource not used for receiving the first signal on a SBFD time unit; receiving the first signal on a third time-frequency resource in the first time-frequency resource in the SBFD time unit, the third time-frequency resource being a time-frequency resource in the first time-frequency resource excluding the second time-frequency resource; receiving the first signal on a fourth time-frequency resource in the first time-frequency resource in the non-SBFD time unit, the fourth time-frequency resource being a time-frequency resource in the first time-frequency resource excluding the first ZP CSI-RS resource; wherein the first time-frequency resource overlaps with the second time-frequency resource, and the first time-frequency resource overlaps with the first ZP The time-frequency resources in the CSI-RS resources except the second time-frequency resources overlap.

[0042] Based on the above technical solution, taking the execution subject as the terminal device as an example, the network device sends a third indication information to the terminal device, indicating the second time-frequency resource in the first ZP CSI-RS resource, and the second time-frequency resource cannot be used to send or receive signals, so that the terminal device can receive the first signal on other resources except the second time-frequency resource in the first time-frequency resource for receiving the first signal indicated by the first indication information, wherein the second time-frequency resource is located on the SBFD time unit, so as to realize the configuration of required resources on different time units in scenarios with different channel environments and interference environments on the SBFD time unit and the non-SBFD time unit, thereby improving the flexibility of resource configuration, and the time-frequency resources that cannot be used to receive or send signals can be determined based on the configured resources.

[0043] In combination with the third aspect, in certain implementations of the third aspect, the third indication information indicates a second time-frequency resource, including: the third indication information indicates at least one channel state information reference signal CSI-RS port, and the at least one CSI-RS port is associated with the second time-frequency resource.

[0044] In combination with the third aspect, in certain implementations of the third aspect, the third indication information indicates the second time-frequency resource, including: the third indication information indicates at least one code division multiplexing CDM group, and the at least one CDM group is associated with the second time-frequency resource.

[0045] In combination with the third aspect, in certain implementations of the third aspect, the third indication information indicates the second time-frequency resource, including: the third indication information indicates the number N of CSI-RS ports, and the N CSI-RS ports are associated with the second time-frequency resource.

[0046] In conjunction with the third aspect, in certain implementations of the third aspect, if the codebook type is configured as a single panel, the codebook type is related to the antenna configuration of the network device, and the index of the N CSI-RS ports includes: and or, and M / 2-(0~N / 2-1)-1, where M indicates the total number of antenna ports of the network device.

[0047] In conjunction with the third aspect, in certain implementations of the third aspect, if the codebook type is configured as a double-panel panel, the codebook type is related to the antenna configuration of the network device, and the index of the N CSI-RS ports includes: and or, and (0~N / 2-1)+M / 2, where M indicates the total number of antenna ports of the network device.

[0048] In combination with the third aspect, in certain implementations of the third aspect, the third indication information is configured in the first ZP CSI-RS resource, and the third indication information indicates the second time-frequency resource in the first ZP CSI-RS resource; or, the third indication information is configured in the first ZP CSI-RS resource set, and the third indication information indicates the second time-frequency resource of each ZP CSI-RS resource in the first ZP CSI-RS resource set; or, the third indication information is configured in the first ZP CSI-RS resource set table, and the third indication information indicates the second time-frequency resource of each ZP CSI-RS resource in the first ZP CSI-RS resource set table; or, the third indication information is configured in the PDSCH configuration or CSI reporting resource setting, and the third indication information indicates the second time-frequency resource of each ZP CSI-RS resource in all ZP CSI-RS resource set tables.

[0049] Based on the above technical solution, the third indication information can indicate the second time-frequency resource by indicating the CSI-RS port, CDM group, or the number of CSI-RS ports, thereby improving the flexibility of the solution.

[0050] In a fourth aspect, a communication method is provided. The method can be executed by a network device, or by a chip or circuit, etc., which is not limited in this application.

[0051] The communication method includes: sending first indication information, the first indication information indicating receiving a first signal on a first time-frequency resource; sending second indication information, the second indication information indicating a first ZP CSI-RS resource, the first ZP CSI-RS resource being a time-frequency resource not used for receiving the first signal on a non-SBFD time unit; sending third indication information, the third indication information indicating a second time-frequency resource, the second time-frequency resource being a subset of the first ZP CSI-RS resource, the second time-frequency resource being a time-frequency resource not used for receiving the first signal on a SBFD time unit; sending the first signal on a third time-frequency resource in the first time-frequency resource in a SBFD time unit, the third time-frequency resource being a time-frequency resource in the first time-frequency resource excluding the second time-frequency resource; sending the first signal on a fourth time-frequency resource in the first time-frequency resource in a non-SBFD time unit, the fourth time-frequency resource being a time-frequency resource in the first time-frequency resource excluding the first ZP CSI-RS resource; wherein the first time-frequency resource overlaps with the second time-frequency resource, and the first time-frequency resource overlaps with the first ZP The time-frequency resources in the CSI-RS resources except the second time-frequency resources overlap.

[0052] Specifically, for the description related to the third indication information, reference can be made to the description on the third indication information in the third aspect, which will not be repeated here.

[0053] The technical effects of the method shown in the above fourth aspect and its possible design can refer to the technical effects in the third aspect and its possible design.

[0054] In a fifth aspect, a communication device is provided. The communication device is configured to execute the first and third aspects above, and any of their implementations. Specifically, the communication device includes a processor and a memory, the memory being configured to store a computer program; the processor being configured to retrieve and execute the computer program from the memory, causing the communication device to execute the first and third aspects above, and any of their implementations.

[0055] In one implementation, the communication device is a terminal device. When the communication device is a terminal device, the transceiver unit may be a transceiver or an input / output interface. The processing unit may be at least one processor. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input / output interface may be an input / output circuit.

[0056] In another implementation, the communication device may be a chip, chip system, or circuit in a terminal device. In this case, the transceiver unit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; and the processing unit may be at least one processor, processing circuit, or logic circuit.

[0057] In a sixth aspect, a communication device is provided. The communication device is configured to execute the second and fourth aspects above, and any of their implementations. Specifically, the communication device includes a processor and a memory, the memory being configured to store a computer program; the processor being configured to retrieve and execute the computer program from the memory, causing the network device to execute the second and fourth aspects above, and any of their implementations.

[0058] In one implementation, the communication device is a network device. When the communication device is a network device, the transceiver unit may be a transceiver or an input / output interface. The processing unit may be at least one processor. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input / output interface may be an input / output circuit.

[0059] In another implementation, the communication device may be a chip, chip system, or circuit in a network device. In this case, the transceiver unit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; and the processing unit may be at least one processor, processing circuit, or logic circuit.

[0060] In a seventh aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method of any one of the implementation modes of the first to fourth aspects is executed.

[0061] In an eighth aspect, a computer program product comprising instructions is provided. When the computer program product is executed, the method provided in any one of the implementations of the first to fourth aspects is executed.

[0062] In a ninth aspect, a chip is provided, which includes a processor and a communication interface. The processor reads instructions through the communication interface and executes the method provided by any one of the implementation methods of the first to fourth aspects above.

[0063] Optionally, as an implementation method, the chip also includes a memory, the memory stores a computer program or instructions, and the processor is used to execute the computer program or instructions stored in the memory. When the computer program or instructions are executed, the processor is used to execute the method provided in any one of the implementation methods of the first to fourth aspects above.

[0064] In a tenth aspect, a communication system is provided, comprising the communication device of the fifth aspect and the communication device of the sixth aspect.

[0065] In an eleventh aspect, a computer program is provided. When the computer program is executed, the method provided in any one of the implementations of the first to fourth aspects is executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] FIG1 is a schematic diagram of a communication system to which the present application is applicable.

[0067] Figures 2(a) to 2(d) are schematic diagrams of time domain resource division.

[0068] Figure 3 (a) to (c) are schematic diagrams of antenna configurations.

[0069] FIG4 is a schematic diagram of time-frequency resource allocation of CSI-RS in one RB.

[0070] FIG5 is a schematic diagram of the spatial position of CSI-RS ports.

[0071] FIG6 is a schematic diagram of a signaling structure of MAC CE.

[0072] FIG7 is a schematic flowchart of a communication method provided in an embodiment of the present application.

[0073] Figure 8 (a) and (b) are schematic diagrams of activation / deactivation messages provided in an embodiment of the present application.

[0074] FIG9 is a schematic flowchart of another communication method provided in an embodiment of the present application.

[0075] FIG10 is a schematic diagram of the second time-frequency resource provided in an embodiment of the present application.

[0076] FIG11 is a schematic diagram of a CSI-RS port provided in an embodiment of the present application.

[0077] FIG12 is a schematic block diagram of a communication device provided in an embodiment of the present application.

[0078] FIG13 is a schematic diagram of another communication device provided in an embodiment of the present application.

[0079] FIG14 is a schematic diagram of a chip system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0080] In order to facilitate understanding of the embodiments of the present application, the following explanations are made.

[0081] First, in this application, "used to indicate" can include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must include A.

[0082] The information indicated by the indication information is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. 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 predefined, for example, predefined according to the protocol, or configured by the transmitting device by sending configuration information to the receiving device. Among them, the configuration information can be, but is not limited to, one or a combination of at least two of radio resource control (RRC) signaling, medium 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).

[0083] Second, "at least one" shown in the present application refers to one or more, and "a plurality of" refers to two or more. In addition, in the embodiments of the present application, "first", "second" and various digital numbers (for example, "#1", "#2", etc.) 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 each process below does not mean the order of execution. The execution order of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. It should be understood that the objects described in this way can be interchanged where appropriate, so that the schemes other than the embodiments of the present application can be described. In addition, in the embodiments of the present application, words such as "710", "720" are only for the convenience of description and are not used to limit the order of execution of steps.

[0084] Third, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0085] Fourth, the term "storage" used in the embodiments of this application may refer to storage in one or more memories. The one or more memories may be provided separately or integrated into an encoder or decoder, a processor, or a communication device. The one or more memories may also be provided in part separately and in part integrated into a decoder, a processor, or a communication device. The memory may be any type of storage medium, and this application is not limited thereto.

[0086] Fifth, the "protocol" involved in the embodiments of the present application may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems. This application does not limit this.

[0087] Sixth, in the embodiments of the present application, "under the circumstances", "when", and "if" can sometimes be used interchangeably. It should be pointed out that when the distinction between them is not emphasized, the meanings they intend to express are consistent.

[0088] Seventh, in the embodiments of this application, various terms and English abbreviations, such as radio resource control (RRC), are provided for ease of description and should not constitute any limitation on this application. This application does not exclude the possibility of defining other terms in existing or future protocols that can achieve the same or similar functions.

[0089] Eighth, the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0090] The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0091] The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in the present application can also be applied to future communication systems, such as the sixth generation mobile communication system. The technical solutions of the embodiments of the present application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and Internet of Things (IoT) communication system or other communication systems.

[0092] To facilitate understanding of the embodiments of the present application, the communication system to which the present application applies is first described in conjunction with FIG1 , for example. The terminal equipment in the embodiments of the present application may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a relay station, a remote station, a remote terminal, a mobile device, a user terminal, user equipment (UE), a terminal, a wireless communication device, a user agent, or a user device. The terminal equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, a terminal device in a future evolved public land mobile network (PLMN), or a terminal device in a future Internet of Vehicles, etc., and the embodiments of the present application are not limited thereto.

[0093] For example, in the embodiments of the present application, wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear. Such as glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured devices that can achieve complete or partial functions without relying on smartphones. For example: smart watches or smart glasses. In addition, it can also be a portable device that only focuses on a certain type of application function and needs to be used in conjunction with other devices such as smartphones. Such as various smart bracelets and smart jewelry for vital sign monitoring.

[0094] Furthermore, in the embodiments of the present application, the terminal device may also be a terminal device in an IoT system. IoT is an important component of future information technology development. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network that interconnects humans and machines, and objects and things. In the embodiments of the present application, IoT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, narrowband (NB) technology.

[0095] In addition, in an embodiment of the present application, the terminal device may also include a sensor, whose main functions include collecting data (part of the terminal device), receiving control information and downlink data from the network device, and sending electromagnetic waves to transmit uplink data to the network device.

[0096] The network device in the embodiment of the present application can be any communication device with wireless transceiver functions for communicating with a terminal device. The device includes but is not limited to: an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a home evolved Node B (HeNB, or home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc., and can also be a 5G system, such as a gNB in ​​an NR system, or a transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), etc.

[0097] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, the radio access network may also be an open radio access network (O-RAN) architecture. In the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0098] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0099] In the embodiment of the present application, the terminal device or network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, for example, operating system, operating system, operating system, Operating system or Operating system, etc. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software.

[0100] In addition, various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and / or engineering techniques. The term "product" as used in this application covers computer programs that can be accessed from any computer-readable device, carrier, or medium. For example, computer-readable media include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0101] To facilitate understanding of the embodiments of the present application, a communication system applicable to the embodiments of the present application will first be described in detail using the communication system shown in FIG1 as an example. As shown in FIG1 , the communication system 100 may include at least one network device 101 and at least one terminal device 102 to 107. Terminal devices 102 to 107 may be mobile or fixed. Network device 101 and one or more of terminal devices 102 to 107 may communicate via wireless links. Each network device may provide communication coverage for a specific geographic area and may communicate with terminal devices within that coverage area.

[0102] Optionally, terminal devices can communicate directly with each other. For example, direct communication between terminal devices can be achieved using device-to-device (D2D) technology. As shown in Figure 1, terminal devices 105 and 106, and terminal devices 105 and 107 can communicate directly using D2D technology. Terminal devices 106 and 107 can communicate with terminal device 105 individually or simultaneously.

[0103] Terminal devices 105 to 107 may also communicate with network device 101. For example, they may communicate directly with network device 101, as shown in the figure, where terminal devices 105 and 106 may communicate directly with network device 101. They may also communicate indirectly with network device 101, as shown in FIG1 , where terminal device 107 communicates with network device 101 via terminal device 105.

[0104] Each communication device can be configured with multiple antennas. For each communication device in communication system 100, the multiple antennas configured may include at least one transmit antenna for sending signals and at least one receive antenna for receiving signals. Therefore, the communication devices in communication system 100 can communicate with each other using multi-antenna technology.

[0105] The interface between the network device and the terminal device can be a Uu interface (or air interface). Of course, in future communications, the names of these interfaces may remain unchanged, or may be replaced by other names, and this application is not limited to this. For example, the communication between the network device and the terminal device follows a certain protocol layer structure. The network layering is to send, forward, package or unpack data of the network nodes (such as network devices and terminal devices), and control the loading or unpacking of information, etc., which are completed by different hardware and software modules respectively. This can make the complex problem of communication and network interconnection simpler.

[0106] It should be understood that Figure 1 is merely a simplified schematic diagram for ease of understanding, and the communication system 100 may also include other network devices or other terminal devices (not shown in Figure 1). For example, the communication system 100 may also include core network devices. On the one hand, the access network device provides wireless access connections for terminal devices and can send data to or receive data from terminal devices. On the other hand, the access network device also has a connection with the core network device and can forward data received from the terminal device to the core network, or receive data from the core network that needs to be sent to the terminal device.

[0107] For example, the communication system 100 may further include an application function (AF) network element, which is a control plane network function provided by the operator network and is used to provide application layer information; the communication system 100 may further include a session management function (SMF) network element, which is a control plane network function provided by the operator network. In the embodiment of the present application, when the communication system 100 includes the AF network element and the SMF network element, the AF can send service-related information to the network device via the SMF.

[0108] To facilitate understanding of the embodiments of the present application, some basic concepts involved in the present application are briefly described. It should be understood that the basic concepts introduced below are illustrated by taking the basic concepts specified in the NR protocol as an example, but the embodiments of the present application are not limited to being applicable only to NR systems. Therefore, the standard names that appear when describing the NR system as an example are all functional descriptions. The specific names are not limited and only indicate the functions of the device, which can be extended to other systems in the future.

[0109] 1. Time division duplex (TDD): Widely used in the deployment of 5G wireless communication systems. TDD divides time domain resources into uplink and downlink. For example, a possible TDD uplink / downlink configuration is DDDSU, as shown in Figure 2(a). D represents a downlink time slot, where every symbol in a downlink time slot is a downlink symbol; U represents an uplink time slot, where every symbol in an uplink time slot is an uplink symbol; and S represents a special time slot, which includes at least flexible symbols. Limited uplink time domain resource allocation leads to reduced uplink coverage and increased latency in TDD.

[0110] For example, one possible method for enhancing uplink coverage is to adopt subband full duplex (SBFD), which includes subband overlapping full duplex and subband non-overlapping full duplex.

[0111] Specifically, SBFD can be understood as dividing the frequency band of downlink symbols and / or flexible symbols into one or more uplink subbands and one or more downlink subbands, and allowing uplink transmission on the uplink subband of the downlink symbols. The resulting subband (also called an SBFD subband) can be understood as consisting of one RB or a group of consecutive RBs used for the same transmission direction.

[0112] Compared with TDD, SBFD has more uplink resources to improve uplink coverage performance, and more time slots have uplink resources for hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback to reduce latency.

[0113] Currently, base stations support full-duplex (SBFD), meaning they can simultaneously transmit on an uplink subband and receive on a downlink subband in one timeslot. UEs support half-duplex (HF) SBFD, meaning they can only transmit on an uplink subband or only receive on a downlink subband in one timeslot.

[0114] For convenience, symbols with both uplink and downlink subbands on the frequency band are referred to as SBFD symbols, denoted by X (to distinguish D, U, and S). SBFD-specific uplink / downlink configurations typically include the following three types: XXXXX, XXXXU, and DXXXU, as shown in Figures 2(b) through (d). An SBFD symbol can be understood as a symbol with a subband that the network device uses for SBFD operation. An SBFD symbol can also be referred to as an SBFD time unit. Non-SBFD time units include uplink time units, downlink time units, and / or flexible time units (such as the U-slot, D-slot, or S-slot shown in Figure 2(a) above).

[0115] It should be noted that the time units referred to in this application may refer to time slots, symbols, or other time domain ranges in the time domain, without any limitation. For example, an SBFD time unit may be an SBFD time slot. Optionally, a time slot that includes an SBFD symbol may be referred to as an SBFD time slot, e.g., an SBFD time slot includes only SBFD symbols, or an SBFD time slot includes at least one SBFD symbol. For another example, a non-SBFD time unit may be a non-SBFD time slot. Optionally, a time slot that does not include an SBFD symbol may be referred to as a non-SBFD time slot.

[0116] 2. Antenna Configuration: The antenna configuration on the TDD network device side is shown in Figure 3(a). The TDD network device's transmit and receive functions share a single antenna array. Assume the total number of antenna elements is L (as shown in Figure 3(a)), and the number of transmitters (Tx) and receivers (Rx) is K (as shown in Figure 3(a)).

[0117] In downlink time units (e.g., downlink time slots or symbols), K transmitters (Tx) are connected to the antenna panel; in uplink time units, K receivers (Rx) are connected to the antenna panel. The number of units used for transmission and reception is the same as the number of antenna elements.

[0118] SBFD network equipment-side antenna configurations are divided into two categories:

[0119] The first type of SBFD network device-side antenna configuration, shown in Figure 3(b), includes two antenna panel groups (antenna panel group #1 and antenna panel group #2, shown in Figure 3(b)). Each antenna panel group includes L antenna elements and K transmit and receive antennas (TX and RX). In downlink time units, the K transmit TX elements are linked to one antenna panel group; in uplink time units, the K receive RX elements are linked to the other antenna panel group. In SBFD time units, the K transmit TX elements are linked to one antenna panel group, while the K receive RX elements are linked to the other antenna panel group. In this SBFD antenna configuration, a new antenna panel group is added to ensure that the number of transmit and receive elements is the same in SBFD and non-SBFD time units.

[0120] The second type of SBFD network equipment-side antenna configuration, shown in Figure 3(c), includes two antenna panel groups. Each antenna panel group has L / 2 antenna elements and K transmit and receive antennas. In downlink time units, K transmit antennas are connected to the two antenna panel groups. In uplink time units, K receive antennas are connected to the two antenna panels. During SBFD time units, K / 2 transmit antennas are connected to one antenna panel, while K / 2 receive antennas are connected to the other antenna panel. In this SBFD antenna configuration, the number of transmit and receive antennas differs between SBFD and non-SBFD time units.

[0121] 3. Channel state information (CSI) measurement: Network devices need to know the CSI between the network device and the terminal device to help the network device perform downlink scheduling, downlink adaptation, and determine the transmission settings related to multiple-input multiple-output (MIMO) technology.

[0122] Exemplarily, a method for a network device to obtain CSI is: the network device sends a channel state information reference signal (CSI-RS) to a terminal device, the terminal device receives and measures the CSI-RS to obtain CSI, and then reports it to the network device.

[0123] It should be noted that the channel environment and interference environment in the SBFD time unit and the downlink (or flexible) time unit are different. The terminal device needs to measure and report the CSI in the SBFD time unit and the downlink (or flexible) time unit separately. This may be caused by various factors, including:

[0124] 1) The network device uses the second type of SBFD network device-side antenna configuration described above. This means that the number of transmit antenna ports on the network device is different for the SBFD time unit and the downlink (or flexible) time unit. Therefore, the downlink channels on the SBFD time unit and the downlink (or flexible) time unit are different.

[0125] 2) During SBFD time units, some terminal devices receive downlink signals while others transmit uplink signals, causing severe cross-link interference (CLI) to these devices—that is, the uplink interferes with the downlink. However, during downlink time units, all terminal devices receive downlink signals, so these devices are not affected by CLI.

[0126] 4. Resource configuration: To enable the terminal device to measure and report the CSI on the SBFD time unit and the downlink (or flexible) time unit, the network device can configure two sets of non-zero power CSI-RS (NZP CSI-RS) resources for the terminal device, one for channel measurement on the SBFD time unit and the other for channel measurement on the downlink (or flexible) time unit. Optionally, the network device will also configure two sets of NZP CSI-RS resources and / or two sets of CSI interference measurement (CSI-IM) resources for the terminal device, one for NZP CSI-RS-based and / or CSI-IM-based interference measurement on the SBFD time unit and the other for interference measurement on the downlink (or flexible) time unit.

[0127] If the network device adopts the above-mentioned second type of SBFD network device side antenna configuration, the configurations of the above-mentioned two sets of NZP CSI-RS resources for channel measurement are different. For example, the above-mentioned two sets of NZP CSI-RS resources for channel measurement have different port numbers and different time-frequency resources. This is because, based on the second type of SBFD network device side antenna configuration, the number of antenna ports used by the network device on the SBFD time unit and the downlink (or flexible) time unit is different, so the number of ports for the network device to send CSI-RS on the SBFD time unit and the downlink (or flexible) time unit is also different; further, the time-frequency resources used by the CSI-RS are related to the number of CSI-RS ports, so the time-frequency resources for the network device to send CSI-RS on the SBFD time unit and the downlink (or flexible) time unit are also different. For details, please refer to Background Technology 4. Similarly, the configurations of the above-mentioned two sets of NZP CSI-RS resources for interference measurement are also different.

[0128] Finally, in order for the terminal device to perform CSI measurement on the NZP CSI-RS resources and CSI-IM resources, the network device cannot send the physical downlink shared channel (PDSCH) on these resources, that is, when the network device sends the PDSCH, it will perform rate matching based on these resources. Similarly, the terminal device cannot receive the PDSCH on these resources. Therefore, the network device will configure zero power CSI-RS (ZP CSI-RS) resources for the terminal device. Among them, the ZP CSI-RS resources can cover the above-mentioned NZP CSI-RS resources and CSI-IM resources used for channel measurement and interference measurement in the time domain and frequency domain. By configuring the ZP CSI-RS resources for the terminal device, the network device informs the terminal device that the network device will not send PDSCH on the ZP CSI-RS resources; after the terminal device receives the ZP CSI-RS resources, it will not receive PDSCH on the ZP CSI-RS resources.

[0129] 5. CSI-RS resources: Current protocols (e.g., TS 38.211) provide methods for configuring CSI-RS resources, which can be summarized as follows:

[0130] For any CSI-RS, the UE maps the CSI-RS sequence r(m) to a resource element (RE) (k, l) according to the following formula: p,μ :

[0131] Among them, RE(k,l) p,μLocated in the resource block (RB) used by the CSI-RS, it is configured by the network equipment to the user equipment. The parameters in the formula are explained as follows:

[0132] (or denoted as n s,f ) is the time slot number of the CSI-RS time slot within a system frame.

[0133] k is a subcarrier index, and k=0 indicates subcarrier 0 in common resource block (CRB) 0.

[0134] l is an OFDM symbol index in a time slot. If a time slot includes 14 OFDM symbols, then l = 0, 1, ..., 13.

[0135] is the number of subcarriers in an RB, usually

[0136] ρ represents the density of CSI-RS in the frequency domain, which is given by the density field in the RRC information element CSI-RS resource mapping (CSI-RS-ResourceMapping). The specific information elements included in CSI-RS-ResourceMapping are not described in detail here. Refer to the description of the CSI-RS-ResourceMapping field in the current protocol.

[0137] It should be understood that within the configured CSI-RS bandwidth, a CSI-RS can be configured for each RB. This mode is called a CSI-RS density of 1. Alternatively, a CSI-RS can be configured every other RB. This mode is called a CSI-RS density of 0.5. For the density of 0.5, the CSI-RS configuration information indicates which of the two RBs (the RB corresponding to the odd or even index) carries the CSI-RS.

[0138] X represents the number of CSI-RS ports, which is indicated by the number of ports (nrofPorts) field in the RRC information element CSI-RS-ResourceMapping.

[0139] β CSIRS Indicates the power control parameter, which is determined by the power control (powerControlOffsetSS) field in the RRC information element NZP-CSI-RS-Resource.

[0140] k′, l′, w f (k′), w t(l') As shown in Tables 1 to 5, the code division multiplexing (CDM) type in Table 1 is indicated by the cdm-Type field in the RRC information element CSI-RS-ResourceMapping. f (k′) indicates the frequency domain orthogonal cover code (OCC) used by a CDM group, l′ and w t (l′) indicates the time domain OCC used by a CDM group.

[0141] Table 1: CSI-RS locations within a slot

[0142] Table 2: Sequence w corresponding to CDM type 'noCDM' f (k′) and w t (l′)

[0143] Table 3: Sequence w corresponding to CDM type 'fd-CDM2' f (k′) and w t (l′)

[0144] Table 4: Sequence w corresponding to CDM type 'cdm4-FD2-TD2' f (k′) and w t (l′)

[0145] Table 5: Sequence w corresponding to CDM type 'cdm8-FD2-TD4' f (k′) and w t (l′)

[0146] The time domain positions l0∈{0,1,…,13} and l1∈{2,3,…,12} in Table 1 are indicated by the field firstOFDMSymbolInTimeDomain and the field firstOFDMSymbolInTimeDomain2 in the RRC information element CSI-RS-ResourceMapping.

[0147] The frequency domain position k in Table 1 i Determined by the frequencyDomainAllocation field in the RRC information element CSI-RS-ResourceMapping. This field indicates k in the form of a bitmap.i .

[0148] The antenna port number p is determined by the following formula:

[0149] p = 3000 + s + jL;

[0150] j=0,1,...,N / L-1

[0151] s=0,1,...,L-1;

[0152] Where s is the index of the OCC used in a CDM group in Tables 2 to 5, L∈{1,2,4,8} represents the size of the CDM group, and N represents the number of CSI-RS ports. The CDM groups are numbered in the frequency domain first, then the time domain. It should be understood that the CSI-RS ports are counted in the code domain → frequency domain → time domain.

[0153] In summary, based on the above formula and the CSI-RS resource configuration method described in Table 1, Figure 4 shows an example of CSI-RS time-frequency resource allocation within one RB. Figure 4 shows that the CDM type indicates the number of ports that can be reused for each resource of different depth colors.

[0154] The following describes the RBs (starting position and number) and time slots (time slot offset and repetition period) used by the CSI-RS:

[0155] The RBs used by the UE to transmit CSI-RS are given by the freqBand and density fields in the RRC information element CSI-RS-ResourceMapping. freqBand indicates the frequency bandwidth used by the CSI-RS, including the starting RB and the number of RBs N. That is, the frequency bandwidth used by the CSI-RS is N consecutive RBs starting from the starting RB. The starting RB and the number of RBs N are based on the bandwidth part (BWP).

[0156] For periodic CSI-RS and semi-persistent CSI-RS, as indicated by the resourceType field in the RRC information element CSI-ResouceConfig, the network device will repeatedly send CSI-RS in time, and the terminal device will also repeatedly receive CSI-RS in time. The repetition period and time slot offset are indicated by the CSI-ResourcePeriodicityAndOffset field in the RRC information element NZP-CSI-RS-Resource.

[0157] The pattern of RE usage of CSI-RS on each RB in each time slot is the same.

[0158] For example, the spatial position of the CSI-RS ports is shown in Figure 5, which shows the case where the downlink antenna of the network device is configured as a single panel. N1 is the number of antenna elements in one horizontal polarization direction, N2 is the number of antenna elements in one vertical polarization direction, and N1 is the number of antenna panels. The spatial arrangement order of the CSI-RS ports is vertical first, then horizontal, then polarization, and finally antenna panels. Currently, the spatial positions corresponding to the different numbers of CSI-RS ports supported by the protocol are shown in Table 6 (single panel) and Table 7 (multi-panel).

[0159] Table 6: Supported configurations (N1, N2)

[0160] Table 7: Supported configurations (N g ,N1,N2)

[0161] 6. ZP CSI-RS resource type: ZP CSI-RS resources include three time domain behaviors: aperiodic, semi-persistent, and periodic. For each time domain behavior, the network device configures one or more ZP CSI-RS resource sets (high-layer signaling elements: ZP-CSI-RS-ResourceSet). For example, the network device configures through high-layer signaling:

[0162] Aperiodic ZP CSI-RS resource set table (higher layer information element: aperiodic-ZP-CSI-RS-ResourceSetsToAddModList)

[0163] An aperiodic ZP CSI-RS resource set table includes at most three ZP CSI-RS resource sets (high-layer information element: ZP-CSI-RS-Resource).

[0164] Semi-persistent ZP CSI-RS resource set table (higher layer information element: sp-ZP-CSI-RS-ResourceSetsToAddModList)

[0165] A semi-persistent ZP CSI-RS resource set table includes a maximum of 16 ZP CSI-RS resource sets.

[0166] Periodic ZP CSI-RS resource set (high-layer information element: p-ZP-CSI-RS-ResourceSet). It should be understood that the network device will only configure one periodic ZP CSI-RS resource set for the terminal device.

[0167] Each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0168] ZP CSI-RS resources and NZP CSI-RS resources use the same time-frequency resource configuration method, namely the higher-layer information element CSI-RS-ResourceMapping and the higher-layer information element periodicityAndOffset. This helps ensure that the time-frequency resources of ZP CSI-RS overlap with the time-frequency resources of NZP CSI-RS.

[0169] For periodic ZP CSI-RS resources, once the network device configures one periodic ZP CSI-RS resource set for the terminal device, it takes effect immediately.

[0170] For semi-persistent ZP CSI-RS resources, the network device configures a semi-persistent ZP CSI-RS resource set table for the terminal device, including a maximum of 16 ZP CSI-RS resource sets. The network device then sends a semi-persistent (SP) ZP CSI-RS resource set activation / deactivation MAC CE, i.e., SP ZP CSI-RS Resource Set Activation / Deactivation MAC CE, to the terminal device, indicating activation / deactivation of a semi-persistent ZP CSI-RS resource set in the semi-persistent ZP CSI-RS resource set table.

[0171] For the SP ZP CSI-RS Resource Set Activation / Deactivation MAC CE, its signaling structure is shown in Figure 6, where the information included in the MAC CE is explained as follows:

[0172] A / D: Indicates whether to activate or deactivate the indicated SP ZP CSI-RS resource set. The length is 1 bit. '1' indicates activation, and '0' indicates deactivation.

[0173] Serving cell identifier (serving cell ID): indicates the serving cell associated with the MAC CE, with a length of 5 bits.

[0174] Bandwidth part identify (BWP ID): indicates the downlink BWP associated with this MAC CE, with a length of 2 bits.

[0175] SP ZP CSI-RS resource set ID: indicates the ID of the activated / deactivated SP ZP CSI-RS resource set, with a length of 4 bits.

[0176] R: Reserved bit, set to 0.

[0177] For an aperiodic CSI-RS resource set, the network device configures an aperiodic ZP CSI-RS resource set table for the terminal device, including a maximum of three ZP CSI-RS resource sets. The network device then sends DCI to the terminal device, including a ZP CSI-RS trigger field (ZP CSI-RS trigger), where the ZP CSI-RS trigger is used to indicate the triggering of an aperiodic ZP CSI-RS resource set in the aperiodic ZP CSI-RS resource set table.

[0178] For the ZP CSI-RS trigger field in the DCI, its length is determined according to the number of aperiodic ZP CSI-RS resource sets included in the aperiodic ZP CSI-RS resource set list, that is, where n zp The relationship between the ZP CSI-RS trigger and the aperiodic ZP CSI-RS resource set is as follows:

[0179] '01': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set ID (ZP-CSI-RS-ResourceSetId) of 1.

[0180] '10': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set ID (ZP-CSI-RS-ResourceSetId) of 2.

[0181] '11': triggers the ZP CSI-RS resource set with the ZP CSI-RS resource set ID (ZP-CSI-RS-ResourceSetId) being 3.

[0182] '00': Reserved, does not trigger any ZP CSI-RS resource set.

[0183] The above, in conjunction with Figure 1, briefly introduces the scenarios in which the communication method provided in the embodiment of the present application can be applied, as well as the basic concepts that may be involved in the embodiment of the present application. In the basic concepts, the ZP CSI-RS resources and the network device side antenna configuration method for SBFD are introduced.

[0184] It should be understood that based on the antenna configuration on the second type of SBFD network device side, the configuration of the two sets of NZP-CSI-RS resources used for channel measurement on the SBFD time unit and the non-SBFD time unit is different. Optionally, the configuration of the two sets of NZP-CSI-RS resources used for interference measurement on the SBFD time unit and the non-SBFD time unit is also different. Therefore, the network device also needs to configure two sets of ZP CSI-RS resources, corresponding to the two sets of NZP-CSI-RS resources for channel measurement. Optionally, the network device also needs to configure two sets of ZP CSI-RS resources, corresponding to the two sets of NZP-CSI-RS resources for interference measurement.

[0185] However, the number of ZP CSI-RS resources is currently limited:

[0186] Aperiodic ZP CSI-RS resources: up to 3 ZP CSI-RS resource sets.

[0187] Semi-persistent ZP CSI-RS resources: up to 16 ZP CSI-RS resource sets.

[0188] Periodic ZP CSI-RS resource: up to 1 ZP CSI-RS resource set.

[0189] One ZP CSI-RS resource set can contain up to 16 ZP CSI-RS resources. This cannot meet the requirement for more ZP CSI-RS resource configuration when using the second type of SBFD network device-side antenna configuration in SBFD scenarios, and has low flexibility.

[0190] In order to enable a terminal device to perform CSI measurements on SBFD time units and non-SBFD time units in scenarios where the channel environment and interference environment on SBFD time units are different and the antenna configuration on non-SBFD time units is different, the present application provides a communication method for configuring time-frequency resources on different time units that cannot be used for receiving or sending signals for the terminal device.

[0191] It should be understood that the communication method provided in the embodiments of the present application can be applied to a system that communicates using a multi-antenna technology, for example, the communication system 100 shown in Figure 1. The communication system may include at least one network device and at least one terminal device.

[0192] It should also be understood that the embodiments shown below do not specifically limit the specific structure of the execution subject of the method provided in the embodiments of the present application. As long as it is possible to communicate according to the method provided in the embodiments of the present application by running a program that records the code of the method provided in the embodiments of the present application. For example, the execution subject of the method provided in the embodiments of the present application can be a terminal device, or a functional module in the terminal device that can call and execute the program.

[0193] FIG7 is a schematic flow chart of a communication method provided in an embodiment of the present application, comprising the following steps:

[0194] S710, the network device sends a first message to the terminal device, and correspondingly, the terminal device receives the first message from the network device.

[0195] The first message indicates receiving a first signal, where the first signal includes but is not limited to PDSCH, or other signals that cannot be sent or received on ZP CSI-RS resources, which are not given examples here.

[0196] S720: The network device sends a second message to the terminal device. Correspondingly, the terminal device receives the second message from the network device.

[0197] The second message indicates a first resource set including a first resource and a second resource, where the time domain resource of the first resource is located in an SBFD time unit, and the time domain resource of the second resource is located in a non-SBFD time unit.

[0198] Exemplarily, the first message and the second message may be information carried in the same message, or the first message and the second message may be different messages, which is not limited in this embodiment.

[0199] The above-mentioned time domain resource of the first resource is located on the SBFD time unit, and the time domain resource of the second resource is located on the non-SBFD time unit. It can be understood that: compared with the ZP CSI-RS resource set configured by the current network device or the number of ZP CSI-RS resources included in the ZP CSI-RS resource set table, the number of ZP CSI-RS resources configured by the network device in this embodiment is larger, which can meet the resource requirements of the non-SBFD time unit and the SBFD time unit.

[0200] As an example and not a limitation, the first resource and the second resource are ZP CSI-RS resources or other resources that cannot perform signal transmission. In this embodiment, there is no limitation on the names of the resources. For ease of description, the resources may be referred to as ZP CSI-RS resources below.

[0201] As a possible implementation manner, the second message is sent via high-layer signaling (eg, RRC).

[0202] As another possible implementation, the second message is a newly added signaling between the network device and the terminal device. For example, the second message is a newly added signaling sent by the network device to configure the first resource set for the terminal device.

[0203] It should be understood that in this embodiment, there is no limitation on whether the second message is a reused existing signaling or a newly added signaling. Any signaling that can be used to indicate the first resource set required by the terminal in this embodiment is within the protection scope of this application.

[0204] Exemplarily, in this embodiment, the first resource set including the first resource and the second resource indicated by the second message includes the following possible modes:

[0205] Method 1: The first resource set includes one or more of the following:

[0206] Two periodic ZP CSI-RS resource sets;

[0207] Two semi-persistent ZP CSI-RS resource set tables;

[0208] Two aperiodic ZP CSI-RS resource set tables.

[0209] Specifically, each of the two periodic ZP CSI-RS resource sets includes a maximum of 16 ZP CSI-RS resources.

[0210] Each of the two semi-persistent ZP CSI-RS resource set tables includes a maximum of 16 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0211] In addition, each of the two aperiodic ZP CSI-RS resource set tables includes at most 3 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes at most 16 ZP CSI-RS resources.

[0212] Compared with the ZP CSI-RS resource configuration method shown above (configuring 1 periodic ZP CSI-RS resource set, 1 semi-persistent ZP CSI-RS resource set table, or 1 non-periodic ZP CSI-RS resource set table), the case shown in method 1 is equivalent to expanding the number of ZP CSI-RS resource sets or ZP CSI-RS resource set tables.

[0213] Exemplarily, the two periodic ZP CSI-RS resource sets include a first periodic ZP CSI-RS resource set and a second periodic ZP CSI-RS resource set, where the first resources are included in the first periodic ZP CSI-RS resource set and the second resources are included in the second periodic ZP CSI-RS resource set. That is, of the two periodic ZP CSI-RS resource sets, all ZP CSI-RS resources in one periodic ZP CSI-RS resource set are configured in one type of time unit, either SBFD time units or non-SBFD time units, and all ZP CSI-RS resources in the other periodic ZP CSI-RS resource set are configured in another type of time unit.

[0214] For example, the two periodic ZP CSI-RS resource sets include periodic ZP CSI-RS resource set #1 and periodic ZP CSI-RS resource set #2. Periodic ZP CSI-RS resource set #1 is a periodic ZP CSI-RS resource set dedicated to non-SBFD, and periodic ZP CSI-RS resource set #2 is a periodic ZP CSI-RS resource set dedicated to SBFD. The terminal device does not expect all ZP CSI-RS resources in periodic ZP CSI-RS resource set #1 to be configured on SBFD time units. Similarly, the terminal device does not expect all ZP CSI-RS resources in periodic ZP CSI-RS resource set #2 to be configured on non-SBFD time units.

[0215] It should be understood that the non-SBFD dedicated periodic ZP CSI-RS resource set and the SBFD dedicated periodic ZP CSI-RS resource set in the above two periodic ZP CSI-RS resource sets are distinguished by different high-layer signaling names.

[0216] For example, the higher-layer information element corresponding to the non-SBFD dedicated periodic ZP CSI-RS resource set is p-ZP-CSI-RS-ResourceSet, and the higher-layer information element corresponding to the SBFD dedicated periodic ZP CSI-RS resource set is p-ZP-CSI-RS-ResourceSet-SBFD.

[0217] Exemplarily, the two semi-persistent ZP CSI-RS resource set tables include a first semi-persistent ZP CSI-RS resource set table and a second semi-persistent ZP CSI-RS resource set table, wherein the first resource is included in the first semi-persistent ZP CSI-RS resource set table, and the second resource is included in the second semi-persistent ZP CSI-RS resource set table. In other words, in the two semi-persistent ZP CSI-RS resource set tables, all ZP CSI-RS resources in one semi-persistent ZP CSI-RS resource set table are configured in one type of time unit between SBFD time units and non-SBFD time units, and all ZP CSI-RS resources in the other semi-persistent ZP CSI-RS resource set table are configured in another type of time unit.

[0218] For example, the two semi-persistent ZP CSI-RS resource set tables include semi-persistent ZP CSI-RS resource set table #1 and semi-persistent ZP CSI-RS resource set table #2. Semi-persistent ZP CSI-RS resource set table #1 is a periodic ZP CSI-RS resource set dedicated to non-SBFD, and semi-persistent ZP CSI-RS resource set table #2 is a periodic ZP CSI-RS resource set dedicated to SBFD. The terminal device does not expect all ZP CSI-RS resources in semi-persistent ZP CSI-RS resource set table #1 to be configured on SBFD time units. Similarly, the terminal device does not expect all ZP CSI-RS resources in semi-persistent ZP CSI-RS resource set table #2 to be configured on non-SBFD time units.

[0219] It should be understood that the non-SBFD dedicated semi-persistent ZP CSI-RS resource set table and the SBFD dedicated semi-persistent ZP CSI-RS resource set table in the above two semi-persistent ZP CSI-RS resource set tables are distinguished by different high-layer signaling names.

[0220] For example, the higher-layer information element corresponding to the semi-persistent ZP CSI-RS resource set table dedicated to non-SBFD is sp-ZP-CSI-RS-ResourceSetsToAddModList, and the higher-layer information element corresponding to the semi-persistent ZP CSI-RS resource set table dedicated to SBFD is sp-ZP-CSI-RS-ResourceSetsToAddModList-SBFD.

[0221] Exemplarily, the two aperiodic ZP CSI-RS resource set tables include a first aperiodic ZP CSI-RS resource set table and a second aperiodic ZP CSI-RS resource set table, wherein the first resource is included in the first aperiodic ZP CSI-RS resource set table, and the second resource is included in the second aperiodic ZP CSI-RS resource set table. In other words, in the two aperiodic ZP CSI-RS resource set tables, all ZP CSI-RS resources in one aperiodic ZP CSI-RS resource set table are configured in one type of time unit between SBFD time units and non-SBFD time units, and all ZP CSI-RS resources in the other aperiodic ZP CSI-RS resource set table are configured in another type of time unit.

[0222] For example, the two non-periodic ZP CSI-RS resource set tables include non-periodic ZP CSI-RS resource set table #1 and non-periodic ZP CSI-RS resource set table #2. Non-periodic ZP CSI-RS resource set table #1 is an non-periodic ZP CSI-RS resource set table dedicated to non-SBFD, and periodic ZP CSI-RS resource set table #2 is an non-periodic ZP CSI-RS resource set table dedicated to SBFD. The terminal device does not expect all ZP CSI-RS resources in non-periodic ZP CSI-RS resource set table #1 to be configured on SBFD time units. Similarly, the terminal device does not expect all ZP CSI-RS resources in non-periodic ZP CSI-RS resource set table #2 to be configured on non-SBFD time units.

[0223] It should be understood that the non-SBFD dedicated aperiodic ZP CSI-RS resource set table and the SBFD dedicated aperiodic ZP CSI-RS resource set table in the above two aperiodic ZP CSI-RS resource set tables are distinguished by different high-layer signaling names.

[0224] For example, the higher-layer information element corresponding to the non-SBFD-dedicated aperiodic ZP CSI-RS resource set table is aperiodic-ZP-CSI-RS-ResourceSetsToAddModList, and the higher-layer information element corresponding to the SBFD-dedicated aperiodic ZP CSI-RS resource set table is aperiodic-ZP-CSI-RS-ResourceSetsToAddModList-SBFD.

[0225] Method 2: The first resource set includes one or more of the following:

[0226] A periodic ZP CSI-RS resource set table;

[0227] A semi-persistent ZP CSI-RS resource set table;

[0228] A table of aperiodic ZP CSI-RS resource sets.

[0229] Specifically, the periodic ZP CSI-RS resource set table includes at most 2 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes at most 16 ZP CSI-RS resources.

[0230] A semi-persistent ZP CSI-RS resource set table includes a maximum of 32 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0231] An aperiodic ZP CSI-RS resource set table includes a maximum of 6 or 7 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0232] Compared with the ZP CSI-RS resource configuration method shown above (configuring 1 periodic ZP CSI-RS resource set, 1 semi-persistent ZP CSI-RS resource set table, or 1 non-periodic ZP CSI-RS resource set table), the case shown in method 2 is equivalent to expanding the number of ZP CSI-RS resource sets included in the ZP CSI-RS resource set table.

[0233] Exemplarily, a periodic ZP CSI-RS resource set includes two ZP CSI-RS resource sets, one of which includes first resources and the other includes second resources. That is, all ZP CSI-RS resources in one of the two ZP CSI-RS resource sets are configured in one type of time unit, either SBFD time units or non-SBFD time units, and all ZP CSI-RS resources in the other ZP CSI-RS resource set are configured in another type of time unit.

[0234] For example, a periodic ZP CSI-RS resource set includes ZP CSI-RS resource set #1 and ZP CSI-RS resource set #2. ZP CSI-RS resource set #1 is a periodic ZP CSI-RS resource set dedicated to non-SBFD, and ZP CSI-RS resource set #2 is a periodic ZP CSI-RS resource set dedicated to SBFD. The terminal device does not expect all ZP CSI-RS resources in ZP CSI-RS resource set #1 to be configured in SBFD time units. Similarly, the terminal device does not expect all ZP CSI-RS resources in ZP CSI-RS resource set #2 to be configured in non-SBFD time units.

[0235] Exemplarily, a semi-persistent ZP CSI-RS resource set table includes 32 ZP CSI-RS resource sets, 16 of which include first resources, and the other 16 ZP CSI-RS resource sets include second resources.

[0236] Exemplarily, an aperiodic ZP CSI-RS resource set table includes 6 or 7 ZP CSI-RS resource sets, one of the 3 ZP CSI-RS resource sets includes the first resource, and the other 3 or 4 ZP CSI-RS resource sets include the second resource; or, one of the 3 ZP CSI-RS resource sets includes the second resource, and the other 3 or 4 ZP CSI-RS resource sets include the first resource.

[0237] Method 3: The first resource set includes one or more of the following:

[0238] A periodic ZP CSI-RS resource set;

[0239] A semi-persistent ZP CSI-RS resource set table;

[0240] A table of aperiodic ZP CSI-RS resource sets.

[0241] Specifically, a periodic ZP CSI-RS resource set includes a maximum of 32 ZP CSI-RS resources.

[0242] A semi-persistent ZP CSI-RS resource set table includes a maximum of 16 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 32 ZP CSI-RS resources.

[0243] In addition, an aperiodic ZP CSI-RS resource set table includes at most 3 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes at most 32 ZP CSI-RS resources.

[0244] Compared with the ZP CSI-RS resource configuration method shown above (configuring 1 periodic ZP CSI-RS resource set, 1 semi-persistent ZP CSI-RS resource set table, or 1 non-periodic ZP CSI-RS resource set table), the case shown in method 3 is equivalent to expanding the number of ZP CSI-RS resources included in the ZP CSI-RS resource set.

[0245] Method 4: The first resource set includes one or more of the following:

[0246] A periodic ZP CSI-RS resource set;

[0247] A semi-persistent ZP CSI-RS resource set table;

[0248] A table of aperiodic ZP CSI-RS resource sets.

[0249] Specifically, a periodic ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0250] A semi-persistent ZP CSI-RS resource set table includes a maximum of 16 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0251] In addition, an aperiodic ZP CSI-RS resource set table includes a maximum of 3 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0252] Compared with the ZP CSI-RS resource configuration method shown above (configuring 1 periodic ZP CSI-RS resource set, 1 semi-persistent ZP CSI-RS resource set table, or 1 aperiodic ZP CSI-RS resource set table), in the case shown in method 4, the configured ZP CSI-RS resources are not directly expanded, but each ZP CSI-RS resource includes two ZP CSI-RS sub-resources, which is equivalent to enhancing the ZP CSI-RS resources. By configuring two ZP CSI-RS sub-resources, the expansion of the ZP CSI-RS resources is indirectly achieved.

[0253] Specifically, the two ZP CSI-RS sub-resources in one ZP CSI-RS resource are configured simultaneously. That is, CSI measurements on SBFD time units and non-SBFD time units are usually configured in pairs, so the corresponding ZP CSI-RS sub-resources can also be configured in pairs.

[0254] The aforementioned ZP CSI-RS sub-resource includes resource mapping parameters, periodicity, and offset parameters. The resource mapping parameter is the RRC element CSI-RS-ResourceMapping, and the periodicity and offset parameters are the higher-layer element periodicityAndOffset. For descriptions of these parameters, refer to existing protocols and are not detailed here.

[0255] Exemplarily, each ZP CSI-RS resource includes a first ZP CSI-RS subresource and a second ZP CSI-RS subresource, where one of the two subresources includes the first resource and the other includes the second resource. That is, each ZP CSI-RS resource includes the first ZP CSI-RS subresource and the second ZP CSI-RS subresource. The first ZP CSI-RS subresource is configured in one type of time unit, either an SBFD time unit or a non-SBFD time unit, and the second ZP CSI subresource is configured in another type of time unit.

[0256] For example, each ZP CSI-RS resource includes a ZP CSI-RS sub-resource dedicated to SBFD and a ZP CSI-RS sub-resource not dedicated to SBFD. The terminal device does not expect the ZP CSI-RS sub-resource dedicated to SBFD to be configured in a non-SBFD time unit; similarly, the terminal device does not expect the ZP CSI-RS sub-resource not dedicated to SBFD to be configured in a SBFD time unit.

[0257] It should be understood that the above-mentioned methods 1 to 4 are merely examples of possible implementation methods in which the network device in this embodiment configures the first resource set including the first resource and the second resource through the second message, and do not constitute any limitation on the scope of protection of this application. For example, in this embodiment, the network device can configure other resources other than the above-mentioned resource set or resource set table through the second message. Examples will not be given one by one here.

[0258] It should also be understood that if the second message indicates the first resource and the second resource, the terminal device and the network device cannot send or receive PDSCH on the time-frequency resources included in the first resource and the second resource.

[0259] It should be noted that if the ZP CSI-RS resources configured in the second message include semi-persistent ZP CSI-RS resources, it is necessary to activate / deactivate the semi-persistent ZP CSI-RS resources through a message. The method flow shown in FIG7 may also include:

[0260] S730: The network device sends an activation / deactivation message to the terminal device. Correspondingly, the terminal device receives the activation / deactivation message from the network device.

[0261] Specifically, the activation message is used to activate the semi-persistent ZP CSI-RS resources corresponding to the SBFD time unit and the semi-persistent ZP CSI-RS resources corresponding to the non-SBFD time unit; the deactivation message is used to deactivate the semi-persistent ZP CSI-RS resources corresponding to the SBFD time unit and the semi-persistent ZP CSI-RS resources corresponding to the non-SBFD time unit. The activation / deactivation message can be a MAC CE, which carries a field indicating the activation / deactivation of the ZP CSI-RS resources.

[0262] Exemplarily, in this implementation, the activation / deactivation message is used to activate or deactivate a semi-persistent ZP CSI-RS resource set corresponding to the SBFD time unit and the non-SBFD time unit, respectively, including but not limited to the following possible implementations:

[0263] Method 1.1: Corresponding to Method 1 above, the ZP CSI-RS resources configured in the second message include two semi-persistent ZP CSI-RS resource set tables. One semi-persistent ZP CSI-RS resource set table corresponds to an SBFD time unit, and the other semi-persistent ZP CSI-RS resource set table corresponds to a non-SBFD time unit. For example, the first resource is included in the first semi-persistent ZP CSI-RS resource set table, and the second resource is included in the second semi-persistent ZP CSI-RS resource set table.

[0264] As a possible implementation manner, in the case shown in the manner 1.1, the activation / deactivation message may be referred to as a third message, and the third message includes a first field and a second field.

[0265] Exemplarily, the first field activates the first resource in the first semi-persistent ZP CSI-RS resource set table, and the second field activates the second resource in the second semi-persistent ZP CSI-RS resource set table; or, the first field deactivates the third resource in the first semi-persistent ZP CSI-RS resource set table, and the second field deactivates the fourth resource in the second semi-persistent ZP CSI-RS resource set table.

[0266] In this implementation, the first field indicates the index of a ZP CSI-RS resource set activated / deactivated in a first semi-persistent ZP CSI-RS resource set table (e.g., a semi-persistent ZP CSI-RS resource set table corresponding to an SBFD time unit); the second field indicates the index of a ZP CSI-RS resource set activated / deactivated in a second semi-persistent ZP CSI-RS resource set table (e.g., a semi-persistent ZP CSI-RS resource set table corresponding to a non-SBFD time unit).

[0267] Exemplarily, the third message can be the SP ZP CSI-RS Resource Set Activation / Deactivation MAC CE defined in the current protocol (such as the MAC CE structure shown in Figure 6 above), and the first field and the second field are respectively located in the lowest 4 bits and the highest 4 bits of the second byte in the MAC CE, as shown in (a) in Figure 8, or the first field and the second field are respectively located in the highest 4 bits and the lowest 4 bits of the second byte in the MAC CE.

[0268] As another possible implementation manner, in the case shown in the manner 1.1, the activation / deactivation message may be referred to as a third message #1, and the third message #1 includes a first field #1.

[0269] Exemplarily, the first field #1 activates the first resource in the first semi-persistent ZP CSI-RS resource set table, and activates the second resource in the second semi-persistent ZP CSI-RS resource set table; or, the first field #1 deactivates the third resource in the first semi-persistent ZP CSI-RS resource set table, and deactivates the fourth resource in the second semi-persistent ZP CSI-RS resource set table.

[0270] In this implementation, the first field #1 indicates the index of a ZP CSI-RS resource set activated in the first semi-persistent ZP CSI-RS resource set table, and indicates the index of a ZP CSI-RS resource set activated in the second semi-persistent ZP CSI-RS resource set table; or, the first field #1 indicates the index of a ZP CSI-RS resource set deactivated in the first semi-persistent ZP CSI-RS resource set table, and indicates the index of a ZP CSI-RS resource set deactivated in the second semi-persistent ZP CSI-RS resource set table.

[0271] Optionally, the third message #1 is a MAC CE, which includes a first bit and a second bit. If the first bit takes the first value, it indicates that the ZP CSI-RS resource set in the first half-persistent ZP CSI-RS resource set table or the second half-persistent ZP CSI-RS resource set table is activated or deactivated according to the second bit; or, if the first bit takes the second value, it indicates that the ZP CSI-RS resource set in the first half-persistent ZP CSI-RS resource set table and the second half-persistent ZP CSI-RS resource set table is activated or deactivated.

[0272] For example, two reserved bits in the MAC CE may be reused, such as the most significant bit (the first reserved bit) and the second most significant bit (the second reserved bit) in the MAC CE, where the first reserved bit is the first bit and the second reserved bit is the second bit.

[0273] If the first bit is 0, it indicates that a ZP CSI-RS resource set is determined from which semi-persistent ZP CSI-RS resource set table according to the second bit:

[0274] If the second bit is 0, the first semi-persistent ZP CSI-RS resource set table is used for determination. Specifically, a ZP CSI-RS resource set is determined from the first semi-persistent ZP CSI-RS resource set table based on the first field #1. If the second bit is 1, the second semi-persistent ZP CSI-RS resource set table is used for determination. Specifically, a ZP CSI-RS resource set is determined from the second semi-persistent ZP CSI-RS resource set table based on the first field #1.

[0275] If the first bit is 1, it indicates that one ZP CSI-RS resource set in the first semi-persistent ZP CSI-RS resource set table and the second semi-persistent ZP CSI-RS resource set table are activated simultaneously. Specifically, a ZP CSI-RS resource set is determined from the first semi-persistent ZP CSI-RS resource set table according to the first field #1, and a ZP CSI-RS resource set is determined from the second semi-persistent ZP CSI-RS resource set table according to the first field #1.

[0276] As an example and not a limitation, the third message #1 may be the SP ZP CSI-RS Resource Set Activation / Deactivation MAC CE defined in the current protocol (such as the MAC CE structure shown in FIG6 above). The first field #1 is located in the least significant 4 bits of the second byte in the MAC CE, and the first and second bits reuse the most significant two bits of the reserved bits, as shown in FIG8(b). Alternatively, the first and second bits reuse other reserved bits, or the first and second bits are bits in a newly added byte, or the first and second bits are not included, which is not described in detail here.

[0277] Exemplarily, the first semi-persistent ZP CSI-RS resource set table is the first semi-persistent ZP CSI-RS resource set table, and the second semi-persistent ZP CSI-RS resource set table is the second semi-persistent ZP CSI-RS resource set table; or the first semi-persistent ZP CSI-RS resource set table is the second semi-persistent ZP CSI-RS resource set table, and the second semi-persistent ZP CSI-RS resource set table is the first semi-persistent ZP CSI-RS resource set table. Among them, the first semi-persistent ZP CSI-RS resource set table can be the semi-persistent ZP CSI-RS resource set table with a smaller identifier (ID) in the two semi-persistent ZP CSI-RS resource set tables, and the second semi-persistent ZP CSI-RS resource set table can be the semi-persistent ZP CSI-RS resource set table with a larger ID in the two semi-persistent ZP CSI-RS resource set tables, or the first semi-persistent ZP CSI-RS resource set table can be any one of the two semi-persistent ZP CSI-RS resource set tables, and the second semi-persistent ZP CSI-RS resource set table can be the other semi-persistent ZP CSI-RS resource set table in the two semi-persistent ZP CSI-RS resource set tables. There is no limitation on this in this embodiment.

[0278] It should be understood that each of the two semi-persistent ZP CSI-RS resource set tables includes a corresponding index. For example, the first semi-persistent ZP CSI-RS resource set table includes a first index, and the second semi-persistent ZP CSI-RS resource set table includes a second index, and the first index and the second index are different.

[0279] In addition, after receiving the activation / deactivation message, the terminal device can simultaneously activate / deactivate the ZP CSI-RS resource sets in the first semi-persistent ZP CSI-RS resource set table and the ZP CSI-RS resource sets in the second semi-persistent ZP CSI-RS resource set table. CSI measurements on SBFD time units and non-SBFD time units are usually configured in pairs, so the corresponding ZP CSI-RS resource sets can also be activated / deactivated in pairs.

[0280] Method 1.2: Corresponding to Method 2 above, the ZP CSI-RS resources configured in the second message include a semi-persistent ZP CSI-RS resource set table. A semi-persistent ZP CSI-RS resource set table includes a maximum of 32 ZP CSI-RS resource sets, 16 of which correspond to SBFD time units, and the other 16 correspond to non-SBFD time units. For example, the first resource is included in 16 ZP CSI-RS resource sets, and the second resource is included in the other 16 ZP CSI-RS resource sets.

[0281] As a possible implementation manner, in the case shown in manner 1.2, the activation / deactivation message can be called the fifth message, and the fifth message includes a fifth field and a sixth field.

[0282] Exemplarily, the fifth field activates the first resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field activates the second resource in the semi-persistent ZP CSI-RS resource set table; or, the fifth field deactivates the third resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field deactivates the fourth resource in the semi-persistent ZP CSI-RS resource set table.

[0283] For example, the fifth field indicates the index of an activated / deactivated ZP CSI-RS resource set corresponding to the SBFD time unit in the semi-persistent ZP CSI-RS resource set table; the sixth field indicates the index of an activated / deactivated ZP CSI-RS resource set corresponding to the non-SBFD time unit in the semi-persistent ZP CSI-RS resource set table.

[0284] Exemplarily, the fifth message may be a newly defined SP ZP CSI-RS Resource Set Activation / Deactivation MAC CE, which includes three bytes, with the fifth field and the sixth field located in the second and third bytes of the MAC CE, respectively. For example, the fifth field and the sixth field are both located in the least significant 5 bits of the corresponding byte, as shown in FIG8(c).

[0285] As another possible implementation manner, in the case shown in the embodiment 2.1, the activation / deactivation message may be referred to as the fifth message #1, and the fifth message #1 includes the fifth field #1.

[0286] Exemplarily, the fifth field #1 activates the first resource and the second resource in the semi-persistent ZP CSI-RS resource set table; or the fifth field #1 deactivates the first resource and the second resource in the semi-persistent ZP CSI-RS resource set table. For example, 16 of the 32 resource sets and the other 16 resource sets are independently numbered (IDs).

[0287] For example, the fifth field #1 indicates the index of an activated ZP CSI-RS resource set corresponding to the SBFD time unit in the semi-persistent ZP CSI-RS resource set table, and indicates the index of an activated / deactivated ZP CSI-RS resource set corresponding to the non-SBFD time unit in the semi-persistent ZP CSI-RS resource set table.

[0288] Exemplarily, the fifth message #1 may be a newly defined SP ZP CSI-RS Resource Set Activation / Deactivation MAC CE. The MAC CE includes two bytes, and the fifth field #1 is located in the least significant 5 bits of the corresponding byte, as shown in FIG8(d).

[0289] It should be understood that after receiving the activation / deactivation message, the terminal device can simultaneously activate / deactivate two (different) ZP CSI-RS resource sets in the semi-persistent ZP CSI-RS resource set table. CSI measurements on SBFD time units and non-SBFD time units are usually configured in pairs, so the corresponding ZP CSI-RS resource sets can also be activated / deactivated in pairs.

[0290] Optionally, Method 1.2 corresponds to the above-mentioned Method 2, and in the situation shown in the above-mentioned Method 2, 16 resource sets among the 32 resource sets can be regarded as a semi-persistent ZP CSI-RS resource set sub-table, that is, a semi-persistent ZP CSI-RS resource set table includes two semi-persistent ZP CSI-RS resource set sub-tables. In this hypothetical case, the activation / deactivation message in the situation shown in Method 1.2 can be the fifth message #2, and the fifth message #2 includes the fifth field #2 and the sixth field #2.

[0291] For example, the fifth field #2 activates the first resource in one semi-persistent ZP CSI-RS resource set subtable, and the sixth field #2 activates the second resource in another semi-persistent ZP CSI-RS resource set subtable; alternatively, the fifth field #2 deactivates the third resource in one semi-persistent ZP CSI-RS resource set subtable, and the sixth field #2 deactivates the fourth resource in another semi-persistent ZP CSI-RS resource set subtable. The structure of the fifth message #2 can be similar to the structure of the third message shown in FIG8(a), except that the first and second fields in FIG8(a) are replaced by the fifth field #2 and the sixth field #2, respectively, where the length of the fifth field #2 and the length of the sixth field #2 are both 4 bits.

[0292] Mode 1.3: Corresponding to the above-mentioned mode 3, a semi-persistent ZP CSI-RS resource set table configured by the second message includes a maximum of 16 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 32 ZP CSI-RS resources.

[0293] In the case shown in the method 1.3, the activation / deactivation message indicates a ZP CSI-RS resource set activated / deactivated in the semi-persistent ZP CSI-RS resource set table. The activation / deactivation message can refer to the description of the MAC CE described in Figure 6 above and will not be repeated here.

[0294] In the case shown in the method 1.3, the maximum number of ZP CSI-RS resource sets included in the semi-persistent ZP CSI-RS resource set table is expanded from 16 to 32.

[0295] Method 1.4: Corresponding to Method 4 above, the semi-persistent ZP CSI-RS resource set table configured in the second message includes a maximum of 16 ZP CSI-RS resource sets, each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources, and each ZP CSI-RS resource includes two ZP CSI-RS sub-resources.

[0296] In the case shown in embodiment 1.4, the activation / deactivation message indicates the activation / deactivation of a ZP CSI-RS resource set in the semi-persistent ZP CSI-RS resource set table. Each ZP CSI-RS resource in the ZP CSI-RS resource set includes two ZP CSI-RS sub-resources. The activation / deactivation message can be referred to the description of the MAC CE described in Figure 6 above and is not repeated here.

[0297] In the case shown in the method 1.4, the ZP CSI-RS resource is enhanced, and the capacity of the ZP CSI-RS resource is implicitly expanded by configuring two ZP CSI-RS sub-resources.

[0298] It should be understood that the two ZP CSI-RS sub-resources in one ZP CSI-RS resource are always activated / deactivated at the same time.

[0299] It should be understood that CSI measurements on SBFD time units and non-SBFD time units are usually configured in pairs, so the corresponding ZP CSI-RS sub-resources can also be activated / deactivated in pairs.

[0300] It should be noted that if the first resource and / or the second resource configured by the second message is an aperiodic ZP CSI-RS resource, the aperiodic ZP CSI-RS resource needs to be triggered by a message. The method shown in FIG7 may also include:

[0301] S740: The network device sends a trigger message to the terminal device. Correspondingly, the terminal device receives the trigger message from the network device.

[0302] Specifically, the trigger message is used to trigger the aperiodic ZP CSI-RS resources corresponding to the SBFD time unit and the aperiodic ZP CSI-RS resources corresponding to the non-SBFD time unit. The trigger message may be a DCI carrying a field indicating the triggering of the ZP CSI-RS resources.

[0303] Exemplarily, in this implementation, the trigger message is used to trigger an aperiodic ZP CSI-RS resource set corresponding to each of the SBFD time unit and the non-SBFD time unit, including but not limited to the following possible implementations:

[0304] Method 2.1: Corresponding to Method 1 above, the ZP CSI-RS resources configured in the second message include two aperiodic ZP CSI-RS resource set tables. One aperiodic ZP CSI-RS resource set table corresponds to an SBFD time unit, and the other aperiodic ZP CSI-RS resource set table corresponds to a non-SBFD time unit. For example, the first resource is included in the first aperiodic ZP CSI-RS resource set table, and the second resource is included in the second aperiodic ZP CSI-RS resource set table.

[0305] As a possible implementation manner, in the case shown in the manner 2.1, the trigger message may be referred to as a fourth message, and the fourth message includes a third field and a fourth field.

[0306] Exemplarily, the third field triggers the first resource in the first aperiodic ZP CSI-RS resource set table, and the fourth field triggers the second resource in the second aperiodic ZP CSI-RS resource set table.

[0307] Optionally, the third field indicates the index of a ZP CSI-RS resource set triggered in a first non-periodic ZP CSI-RS resource set table (e.g., a non-periodic ZP CSI-RS resource set table corresponding to an SBFD time unit), and the fourth field indicates the index of a ZP CSI-RS resource set triggered in a second non-periodic ZP CSI-RS resource set table (e.g., a non-periodic ZP CSI-RS resource set table corresponding to a non-SBFD time unit).

[0308] Exemplarily, the third field is the existing ZP CSI-RS trigger field in the DCI, and the fourth field is a newly added ZP CSI-RS trigger field in the DCI. Features of the third and fourth fields include:

[0309] The length of the third field is determined according to the number of ZP CSI-RS resource sets included in the first aperiodic ZP CSI-RS resource set list, that is, bits, where n zp,1 is the number of ZP CSI-RS resource sets included in the first aperiodic ZP CSI-RS resource set list.

[0310] As described in the above method 1, 0≤n zp,1 ≤3, the length of the third field is 0, 1 or 2 bits.

[0311] The length of the fourth field is determined according to the number of ZP CSI-RS resource sets included in the second aperiodic ZP CSI-RS resource set list, that is, bits, where n zp,2 is the number of ZP CSI-RS resource sets included in the second aperiodic ZP CSI-RS resource set list.

[0312] As described in the above method 1, 0≤n zp,2 ≤3, the length of the fourth field is 0, 1 or 2 bits.

[0313] Specifically, the method in which the third and fourth fields indicate the ZP CSI-RS resource set may be consistent with that specified in the current protocol, such as:

[0314] '01': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set ID (ZP-CSI-RS-ResourceSetId) of 1.

[0315] '10': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set ID (ZP-CSI-RS-ResourceSetId) of 2.

[0316] '11': triggers the ZP CSI-RS resource set with the ZP CSI-RS resource set ID (ZP-CSI-RS-ResourceSetId) being 3.

[0317] As another possible implementation manner, in the case shown in the manner 2.1, the trigger message may be called the fourth message #1, and the fourth message includes the third field #1.

[0318] Exemplarily, the third field #1 triggers the first resource in the first aperiodic ZP CSI-RS resource set table and the second resource in the second aperiodic ZP CSI-RS resource set table.

[0319] Optionally, the fourth message #1 is DCI, which includes a first bit and a second bit. If the first bit takes the first value, it indicates that the ZP CSI-RS resource set in the first non-periodic ZP CSI-RS resource set table or the second non-periodic ZP CSI-RS resource set table is triggered according to the second bit; or, if the first bit takes the second value, it indicates that the ZP CSI-RS resource set in the first non-periodic ZP CSI-RS resource set table and the second non-periodic ZP CSI-RS resource set table is triggered.

[0320] For example, two reserved bits in the DCI are multiplexed, or two bits are newly added to the DCI, where the two bits include a first bit and a second bit, wherein the first bit is the first bit and the second bit is the second bit.

[0321] If the first bit is 0, it indicates that a ZP CSI-RS resource set is determined from which aperiodic ZP CSI-RS resource set table according to the second bit:

[0322] If the second bit is 0, the first aperiodic ZP CSI-RS resource set table is used for determination. Specifically, a ZP CSI-RS resource set is determined from the first aperiodic ZP CSI-RS resource set table based on the third field #1. If the second bit is 1, the second aperiodic ZP CSI-RS resource set table is used for determination. Specifically, a ZP CSI-RS resource set is determined from the second aperiodic ZP CSI-RS resource set table based on the third field #1.

[0323] If the first bit is 1, it indicates that one ZP CSI-RS resource set in the first aperiodic ZP CSI-RS resource set table and the second aperiodic ZP CSI-RS resource set table are simultaneously activated. Specifically, a ZP CSI-RS resource set is determined from the first aperiodic ZP CSI-RS resource set table according to the third field #1, and a ZP CSI-RS resource set is determined from the second aperiodic ZP CSI-RS resource set table according to the third field #1.

[0324] Exemplarily, the first aperiodic ZP CSI-RS resource set table is one of the two aperiodic ZP CSI-RS resource set tables, and the second aperiodic ZP CSI-RS resource set table is the other of the two aperiodic ZP CSI-RS resource set tables.

[0325] Exemplarily, the first non-periodic ZP CSI-RS resource set table is the first non-periodic ZP CSI-RS resource set table, and the second non-periodic ZP CSI-RS resource set table is the second non-periodic ZP CSI-RS resource set table; or the first non-periodic ZP CSI-RS resource set table is the second non-periodic ZP CSI-RS resource set table, and the second non-periodic ZP CSI-RS resource set table is the first non-periodic ZP CSI-RS resource set table. Among them, the first aperiodic ZP CSI-RS resource set table can be the aperiodic ZP CSI-RS resource set table with the smaller ID in the two aperiodic ZP CSI-RS resource set tables, and the second aperiodic ZP CSI-RS resource set table can be the aperiodic ZP CSI-RS resource set table with the larger ID in the two aperiodic ZP CSI-RS resource set tables, or, the first aperiodic ZP CSI-RS resource set table can be any one of the two aperiodic ZP CSI-RS resource set tables, and the second aperiodic ZP CSI-RS resource set table can be the other aperiodic ZP CSI-RS resource set table in the two aperiodic ZP CSI-RS resource set tables. There is no limitation on this in this embodiment.

[0326] It should be understood that each of the two aperiodic ZP CSI-RS resource set tables includes a corresponding index. For example, the first aperiodic ZP CSI-RS resource set table includes index #1, and the second aperiodic ZP CSI-RS resource set table includes index #2, and index #1 and index #2 are different.

[0327] It should be understood that after receiving the trigger message, the terminal device can simultaneously trigger the ZP CSI-RS resource set in the first aperiodic ZP CSI-RS resource set table and the ZP CSI-RS resource set in the second aperiodic ZP CSI-RS resource set table.

[0328] It should also be understood that CSI measurements on SBFD time units and non-SBFD time units are usually configured in pairs, so the corresponding ZP CSI-RS resource sets can also be triggered in pairs.

[0329] Method 2.2: Corresponding to the above-mentioned method 2, the ZP CSI-RS resources configured in the second message include an aperiodic ZP CSI-RS resource set table. Among them, an aperiodic ZP CSI-RS resource set table includes a maximum of 6 or 7 ZP CSI-RS resource sets, 3 of the 6 or 7 ZP CSI-RS resource sets correspond to SBFD time units, and the other 3 or 4 ZP CSI-RS resource sets correspond to non-SBFD time units. Alternatively, 3 of the 6 or 7 ZP CSI-RS resource sets correspond to non-SBFD time units, and the other 3 or 4 ZP CSI-RS resource sets correspond to SBFD time units.

[0330] As a possible implementation manner, in the case shown in the manner 2.2, the trigger message may be called the sixth message, and the sixth message includes the seventh field and the eighth field.

[0331] Exemplarily, the seventh field triggers the first resource in the aperiodic ZP CSI-RS resource set table, and the eighth field triggers the second resource in the aperiodic ZP CSI-RS resource set table.

[0332] For example, the seventh field indicates the index of a ZP CSI-RS resource set triggered by the SBFD time unit in the non-periodic ZP CSI-RS resource set table; the eighth field indicates the index of a ZP CSI-RS resource set triggered by the SBFD time unit in the non-periodic ZP CSI-RS resource set table.

[0333] As an example, the aperiodic ZP CSI-RS resource set table includes a maximum of 7 ZP CSI-RS resource sets.

[0334] Exemplarily, the seventh field is the existing ZP CSI-RS trigger field in the DCI, and the eighth field is a newly added ZP CSI-RS trigger field in the DCI. Features of the seventh and eighth fields include:

[0335] The lengths of the seventh and eighth fields are determined according to the number of ZP CSI-RS resource sets included in the aperiodic ZP CSI-RS resource set list, i.e. bits, where n zp is the number of ZP CSI-RS resource sets included in the aperiodic ZP CSI-RS resource set list.

[0336] As described in the above method 2, 0≤n zp ≤7, the length of the seventh and eighth fields is 0, 1, 2 or 3 bits.

[0337] The method in which the seventh and eighth fields indicate the ZP CSI-RS resource set includes:

[0338] '001': triggers the ZP CSI-RS resource set whose ZP CSI-RS resource set index (ZP-CSI-RS-ResourceSetId) is 1.

[0339] '010': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set index (ZP-CSI-RS-ResourceSetId) of 2.

[0340] …

[0341] '111': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set index (ZP-CSI-RS-ResourceSetId) of 7.

[0342] '000': Reserved, does not trigger any ZP CSI-RS resource set.

[0343] It should be understood that after receiving the trigger message, the terminal device can simultaneously trigger two (different) ZP CSI-RS resource sets indicated by the seventh field and the eighth field in the non-periodic ZP CSI-RS resource set table.

[0344] It should be understood that CSI measurements on SBFD time units and non-SBFD time units are usually configured in pairs, so the corresponding ZP CSI-RS resource sets can also be triggered in pairs.

[0345] As another example, the aperiodic ZP CSI-RS resource set table includes a maximum of 6 ZP CSI-RS resource sets.

[0346] Exemplarily, the seventh field is the existing ZP CSI-RS trigger field in the DCI, and the eighth field is the second ZP CSI-RS trigger field newly added in the DCI. Features of the seventh and eighth fields include:

[0347] The lengths of the seventh and eighth fields are determined according to half the number of ZP CSI-RS resource sets included in the aperiodic ZP CSI-RS resource set list, i.e. bits, where n zp is the number of ZP CSI-RS resource sets included in the aperiodic ZP CSI-RS resource set list.

[0348] As described in the above method 2, 0≤n zp ≤6, the length of the seventh and eighth fields is 0, 1 or 2 bits.

[0349] The seventh field indicates the method of the ZP CSI-RS resource set including:

[0350] '01': triggers the ZP CSI-RS resource set whose ZP CSI-RS resource set index (ZP-CSI-RS-ResourceSetId) is 1.

[0351] '10': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set index (ZP-CSI-RS-ResourceSetId) of 2.

[0352] '11': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set index (ZP-CSI-RS-ResourceSetId) of 3.

[0353] '00': Reserved, does not trigger any ZP CSI-RS resource set.

[0354] The eighth field indicates the method of the ZP CSI-RS resource set including:

[0355] '01': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set index (ZP-CSI-RS-ResourceSetId) of 4.

[0356] '10': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set index (ZP-CSI-RS-ResourceSetId) of 5.

[0357] '11': triggers the ZP CSI-RS resource set with a ZP CSI-RS resource set index (ZP-CSI-RS-ResourceSetId) of 6.

[0358] '00': Reserved, does not trigger any ZP CSI-RS resource set.

[0359] For example, all ZP CSI-RS resources in the ZP CSI-RS resource set with ZP CSI-RS resource set indexes 1-3 and all ZP CSI-RS resources in the ZP CSI-RS resource set with ZP CSI-RS resource set indexes 4-6 are allocated to different time unit types. The seventh and eighth fields above trigger the allocation of aperiodic ZP CSI-RS in SBFD time units and non-SBFD time units, respectively.

[0360] It should be understood that after receiving the trigger message, the terminal device can simultaneously trigger the two (different) ZP CSI-RS resource sets indicated by the seventh field and the eighth field in the non-periodic ZP CSI-RS resource set table.

[0361] It should be understood that CSI measurements on SBFD time units and non-SBFD time units are usually configured in pairs, so the corresponding ZP CSI-RS resource sets can also be triggered in pairs.

[0362] Mode 2.3: Corresponding to the above-mentioned Mode 3, that is, an aperiodic ZP CSI-RS resource set table configured in the second message, the aperiodic ZP CSI-RS resource set table includes a maximum of 3 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 32 ZP CSI-RS resources.

[0363] In the case shown in the approach 2.3, the trigger message indicates a triggered ZP CSI-RS resource set in the aperiodic ZP CSI-RS resource set table.

[0364] In the case shown in the method 2.3, the maximum number of ZP CSI-RS resource sets included in the aperiodic ZP CSI-RS resource set table is expanded from 16 to 32.

[0365] Mode 2.4: Corresponding to Mode 4 above, the aperiodic ZP CSI-RS resource set table configured in the second message includes a maximum of three ZP CSI-RS resource sets, each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources, and each ZP CSI-RS resource includes two ZP CSI-RS sub-resources.

[0366] In the case shown in the approach 2.4, the trigger message indicates a triggered ZP CSI-RS resource set in the aperiodic ZP CSI-RS resource set table, and each ZP CSI-RS resource in the ZP CSI-RS resource set includes two ZP CSI-RS sub-resources.

[0367] In the case shown in the method 2.4, the ZP CSI-RS resource is enhanced, and the capacity of the ZP CSI-RS resource is implicitly expanded by configuring two ZP CSI-RS sub-resources.

[0368] It should be understood that the two ZP CSI-RS sub-resources in one ZP CSI-RS resource are always triggered simultaneously.

[0369] It should be understood that CSI measurements on SBFD time units and non-SBFD time units are usually configured in pairs, so the corresponding ZP CSI-RS sub-resources can also be triggered in pairs.

[0370] Furthermore, in this embodiment, after the network device completes resource configuration through the second message and activates / deactivates or triggers the corresponding resource, it can send a first signal to the terminal device. The method flow shown in FIG7 also includes:

[0371] S740: The network device sends a first signal to the terminal device. Correspondingly, the terminal device receives the first signal from the network device.

[0372] Specifically, the network device will not send the first signal on the first resource and the second resource; and the terminal device will not receive the first signal on the resources indicated by the first resource and the second resource.

[0373] For example, the network device will not send the first signal on the time-frequency resources included in all ZP CSI-RS resources in the periodic ZP CSI-RS resource set (table) indicated by the second message. The terminal device will not receive the first signal on the time-frequency resources included in all ZP CSI-RS resources in the periodic ZP CSI-RS resource set (table) indicated by the second message.

[0374] For another example, the network device will not send the first signal on the time-frequency resources included in all ZP CSI-RS resources in the activated ZP CSI-RS resource set in the semi-persistent ZP CSI-RS resource set table indicated by the second message. The terminal device will also not receive the first signal on the time-frequency resources included in all ZP CSI-RS resources in the activated ZP CSI-RS resource set in the semi-persistent ZP CSI-RS resource set table indicated by the second message.

[0375] For another example, the network device will not send the first signal on the time-frequency resources included in all ZP CSI-RS resources in the ZP CSI-RS resource set triggered in the aperiodic ZP CSI-RS resource set table indicated by the second message. The terminal device will not receive the first signal on the time-frequency resources included in all ZP CSI-RS resources in the ZP CSI-RS resource set triggered in the aperiodic ZP CSI-RS resource set table indicated by the second message.

[0376] In the communication method shown in Figure 7, the terminal device receives a first message and a second message, the first message indicates that the terminal device receives a first signal, and the second message indicates a first resource set including a first resource and a second resource. The terminal device can receive the first signal on resources other than the first resource and the second resource. Specifically, the time-frequency resources of the first resource are located on the SBFD time unit, and the time-frequency resources of the second resource are located on the non-SBFD time unit. It can be understood that the network device in this technical solution can configure relevant resources for the SBFD time unit and the non-SBFD time unit respectively through the second message, so as to realize the configuration of required resources on different time units in scenarios with different channel environments and interference environments on the SBFD time unit and the non-SBFD time unit, thereby improving the flexibility of resource configuration.

[0377] Another communication method is also provided in this application, which is described in detail below in conjunction with FIG. 9 .

[0378] FIG9 is a schematic flow chart of a communication method provided in an embodiment of the present application. As shown in FIG9 , the method includes the following steps:

[0379] S910, the network device sends first indication information to the terminal device, and correspondingly, the terminal device receives the first indication information from the network device.

[0380] The first indication information indicates that the first signal can be received on the first time-frequency resource. In other words, the first indication information indicates the first time-frequency resource used to receive the first signal. The first signal includes, but is not limited to, a PDSCH or other signal that cannot be transmitted or received on the ZP CSI-RS resource. Examples are not provided here.

[0381] S920, the network device sends second indication information to the terminal device, and correspondingly, the terminal device receives the second indication information from the network device.

[0382] The second indication information indicates a first ZP CSI-RS resource, which is a time-frequency resource that is not used for receiving the first signal in a non-SBFD time unit. Exemplarily, the second indication information is used to configure one or more ZP CSI-RS resources, which are not used for sending or receiving PDSCH in a non-SBFD time unit. The first ZP CSI-RS resource is any one of the one or more ZP CSI-RS resources. For ease of description, the following description uses the second indication information indicating the first ZP CSI-RS resource as an example.

[0383] S930, the network device sends third indication information to the terminal device, and correspondingly, the terminal device receives the third indication information from the network device.

[0384] Exemplarily, the third indication information indicates the second time-frequency resource, where the second time-frequency resource is a time-frequency resource that is not used for sending or receiving the first signal in the SBFD time unit.

[0385] Specifically, the second time-frequency resource is a subset of the first ZP CSI-RS resource, and the second time-frequency resource is not used to send or receive the first signal, or in other words, the time-frequency resource #1 in the first ZP CSI-RS resource can be used to send or receive the first signal, and the time-frequency resource #1 does not include the second time-frequency resource. Alternatively, the third indication information indicates the time-frequency resource #1, and the time-frequency resource #1 is a subset of the first ZP CSI-RS resource, and the time-frequency resource #1 is the time-frequency resource used to send or receive the first signal on the SBFD time unit. It can be understood that the third indication information can indicate the time-frequency resource in the first ZP CSI-RS resource that can send or receive signals on the SBFD time unit, or the third indication information can indicate the time-frequency resource in the first ZP CSI-RS resource that cannot send or receive signals on the SBFD time unit.

[0386] When the third indication information indicates the second time-frequency resource, in the SBFD time unit, the first signal is sent or received on a third time-frequency resource in the first time-frequency resources, where the third time-frequency resource is a time-frequency resource in the first time-frequency resources excluding the second time-frequency resource. In the non-SBFD time unit, the first signal is sent or received on a fourth time-frequency resource in the first time-frequency resources, where the fourth time-frequency resource is a time-frequency resource in the first time-frequency resources excluding the first ZP CSI-RS resource.

[0387] When the third indication information indicates time-frequency resource #1, the first signal can be sent or received on time-frequency resource #1 in the first time-frequency resources in the SBFD time unit. Furthermore, the first signal can be sent or received on a third time-frequency resource in the first time-frequency resources in the SBFD time unit, where the third time-frequency resource is a time-frequency resource in the first time-frequency resources excluding the second time-frequency resource, where the second time-frequency resource is a time-frequency resource in the first ZP CSI-RS resource excluding time-frequency resource #1. In a non-SBFD time unit, the first signal can be sent or received on a fourth time-frequency resource in the first time-frequency resources, where the fourth time-frequency resource is a time-frequency resource in the first time-frequency resources excluding the first ZP CSI-RS resource.

[0388] The first time-frequency resource overlaps with the second time-frequency resource (or there is an intersection, full or partial overlap, etc.), and the first time-frequency resource overlaps with the time-frequency resources in the first ZP CSI-RS resource except the second time-frequency resource (or there is an intersection, full or partial overlap, etc.).

[0389] Exemplarily, the first indication information, the second indication information, and the third indication information may be information carried in the same message, or the first indication information, the second indication information, and the third indication information may be different messages, which is not limited in this embodiment.

[0390] The third indication information indicates that the terminal device cannot receive PDSCH on the second time-frequency resource (or RE) of the first ZP CSI-RS resource on the SBFD time unit. Similarly, the network device cannot send PDSCH on the second time-frequency resource (or RE) on the SBFD time unit. Alternatively, the third indication information indicates that the terminal device can receive PDSCH on the time-frequency resource #1 (or RE) of the first ZP CSI-RS resource on the SBFD time unit. Similarly, the network device can send PDSCH on the time-frequency resource #1 (or RE) of the first ZP CSI-RS resource on the SBFD time unit.

[0391] In addition, the terminal device cannot receive PDSCH on the first ZP CSI-RS resource on the non-SBFD time unit. Similarly, the network device cannot send PDSCH on the first ZP CSI-RS resource on the non-SBFD time unit.

[0392] It should be understood that the second indication information can indicate multiple ZP CSI-RS resources, and the above-mentioned third indication information can be used to indicate the time-frequency resource (or RE) in each ZP CSI-RS resource in the multiple ZP CSI-RS resources, and the terminal device cannot receive PDSCH on the time-frequency resource (or RE).

[0393] For example, the ZP CSI-RS resources indicated by the second indication information include the first ZP CSI-RS resource and the second ZP CSI-RS resource, and the third indication information may indicate the second time-frequency resource #1_1 in the first ZP CSI-RS resource and the second time-frequency resource #1_2 in the second ZP CSI-RS.

[0394] For the convenience of description, this embodiment is described by taking the third indication information indicating the second time-frequency resource (or RE) of the first ZP CSI-RS resource as an example.

[0395] Exemplarily, the network device configures one or more of the following three resource sets or resource set tables for the terminal device:

[0396] A periodic ZP CSI-RS resource set;

[0397] A semi-persistent ZP CSI-RS resource set table;

[0398] A non-periodic ZP CSI-RS resource set table.

[0399] Specifically, a periodic ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0400] A semi-persistent ZP CSI-RS resource set table includes a maximum of 16 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0401] In addition, an aperiodic ZP CSI-RS resource set table includes a maximum of 3 ZP CSI-RS resource sets, and each ZP CSI-RS resource set includes a maximum of 16 ZP CSI-RS resources.

[0402] This embodiment does not impose any limitation on the ZP CSI-RS resources configured by the network device for the terminal device.

[0403] It should be understood that according to the second type of SBFD network device side antenna configuration, compared with the non-SBFD time unit, the number of antenna ports on the SBFD time unit is halved, so that the number of CSI-RS ports on the SBFD time unit is halved. According to the mapping relationship between the number of CSI-RS ports and CSI-RS time-frequency resources defined in the current protocol, as shown in Table 1 and Figure 4, halving the number of CSI-RS ports will further halve the number of CSI-RS time-frequency resources.

[0404] Therefore, the time-frequency resources used by the CSI-RS in the SBFD time unit are half of those used by the CSI-RS in the non-SBFD time unit. This means that the time-frequency resources used by the ZP CSI-RS in the SBFD time unit are also half of those used by the ZP CSI-RS in the non-SBFD time unit.

[0405] Based on the above analysis, one possible method is to configure the ZP CSI-RS resources according to the CSI-RS ports and CSI-RS time-frequency resources on the non-SBFD time unit, and then indicate the time-frequency resources in the ZP CSI-RS resources located in the SBFD time unit through the third indication information. For example, when the antenna configuration on the non-SBFD time unit and the SBFD time unit is as in the second type of antenna configuration scenario shown above (that is, the number of antenna ports corresponding to the SBFD time unit is half of the number of antenna ports corresponding to the non-SBFD time unit), the third indication information indicates that half of the time-frequency resources in the ZP CSI-RS resources are located in the SBFD time unit; for another example, when the number of antenna ports corresponding to the non-SBFD time unit is different from the number of antenna ports corresponding to the SBFD time unit (for example, the number of antenna ports corresponding to the SBFD time unit is less than the number of antenna ports corresponding to the non-SBFD time unit), the third indication information indicates the time-frequency resources in the ZP CSI-RS resources actually used for the SBFD time unit. It should be understood that in this embodiment, the number of antenna ports corresponding to the SBFD time unit is different from the number of antenna ports corresponding to the non-SBFD time unit, and there is no limitation on the specific difference between the number of antenna ports corresponding to the SBFD time unit and the number of antenna ports corresponding to the non-SBFD time unit.

[0406] Exemplarily, in this embodiment, the third indication information indicates the second time-frequency resource (or RE), including but not limited to the following possible methods:

[0407] Implementation method 1: The third indication information indicates at least one CSI-RS port, and the at least one CSI-RS port is associated with the second time-frequency resource. For example, the third indication information is a bitmap, and each bit corresponds to a CSI-RS port one-to-one.

[0408] Exemplarily, a value of a certain bit in the bitmap is '0', indicating that the PDSCH can be sent or received on the time-frequency resource (or RE) associated with the corresponding CSI-RS port (for example, if the value of the bit is '0', the CSI-RS port corresponding to the bit is associated with the time-frequency resource #1 that can be used to send or receive the first signal); a value of a certain bit in the bitmap is '1', indicating that the PDSCH cannot be sent or received on the time-frequency resource (or RE) associated with the corresponding CSI-RS port (for example, if the value of the bit is '1', the CSI-RS port corresponding to the bit is associated with a second time-frequency resource that cannot be used to send or receive the first signal); or,

[0409] A value of a bit in the bit map is '0', indicating that PDSCH cannot be sent or received on the time-frequency resource (or RE) associated with the corresponding CSI-RS port (if the value of the bit is '0', the CSI-RS port corresponding to the bit is associated with the second time-frequency resource that cannot be used to send or receive the first signal); a value of a bit in the bit map is '1', indicating that PDSCH can be sent or received on the time-frequency resource (or RE) associated with the corresponding CSI-RS port (if the value of the bit is '1', the CSI-RS port corresponding to the bit is associated with the time-frequency resource #1 that can be used to send or receive the first signal).

[0410] In the case of implementation method 1, time-frequency resource #1 includes the time-frequency resource associated with the CSI-RS port corresponding to the value of '0' in the bitmap; the second time-frequency resource includes the time-frequency resource associated with the CSI-RS port corresponding to the value of '1' in the bitmap. Alternatively, time-frequency resource #1 includes the time-frequency resource associated with the CSI-RS port corresponding to the value of '1' in the bitmap; the second time-frequency resource includes the time-frequency resource associated with the CSI-RS port corresponding to the value of '0' in the bitmap.

[0411] For example, as shown in Figures 10 and 11, the number of CSI-RS ports is 32, N1=8, N2=2, and the bit map of the third indication information is "1111111110000000001111111100000000", where the bit map is associated with CSI-RS port 3000 to CSI-RS port 3031 from low to high, respectively, '0' indicates that PDSCH can be sent or received on the time-frequency resource (or RE) associated with the corresponding CSI-RS port, that is, the above-mentioned time-frequency resource #1, and '1' indicates that PDSCH cannot be sent or received on the time-frequency resource (or RE) associated with the corresponding CSI-RS port, that is, the above-mentioned second time-frequency resource.

[0412] Implementation method 2: The third indication information indicates at least one code division multiplexing (CDM) group, and the at least one CDM group is associated with the second time-frequency resource. For example, the first indication information is a bitmap, and each bit corresponds to a CDM group one-to-one.

[0413] Exemplarily, the value of a bit in the bitmap is '0', indicating that the PDSCH can be sent or received on the time-frequency resource (or RE) associated with the corresponding CDM group (such as the value of the bit is '0', the CDM group corresponding to the bit is associated with the time-frequency resource #1 that can be used to send or receive the first signal), and the value of a bit in the bitmap is '1', indicating that the PDSCH cannot be sent or received on the time-frequency resource (or RE) associated with the corresponding CDM group (such as the value of the bit is '1', the CDM group corresponding to the bit is associated with a second time-frequency resource that cannot be used to send or receive the first signal); or,

[0414] A value of a certain bit in the bit map is '0', indicating that PDSCH cannot be sent or received on the time-frequency resource (or RE) associated with the corresponding CDM group (for example, the value of the bit is '0', the CDM group corresponding to the bit is associated with the second time-frequency resource that cannot be used to send or receive the first signal); a value of a certain bit in the bit map is '1', indicating that PDSCH can be sent or received on the time-frequency resource (or RE) associated with the corresponding CDM group (for example, the value of the bit is '1', the CDM group corresponding to the bit is associated with the time-frequency resource #1 that can be used to send or receive the first signal).

[0415] In the case shown in the second implementation method, time-frequency resource #1 includes the time-frequency resources associated with the CDM group corresponding to the value of '0' in the bitmap; the second time-frequency resources include the time-frequency resources associated with the CDM group corresponding to the value of '1' in the bitmap. Alternatively, time-frequency resource #1 includes the time-frequency resources associated with the CDM group corresponding to the value of '1' in the bitmap; the second time-frequency resources include the time-frequency resources associated with the CDM group corresponding to the value of '0' in the bitmap. For example, as shown in Figures 10 and 11, the number of CSI-RS ports is 32, N1=8, N2=2, and the bitmap of the first indication information is "11001100", where the bitmap is associated with CDM group 0 to CDM group 7 from low to high, '0' indicates that PDSCH can be sent or received on the time-frequency resource (or RE) associated with the corresponding CDM group, that is, the above-mentioned time-frequency resource #1, and '1' indicates that PDSCH cannot be sent or received on the time-frequency resource (or RE) associated with the corresponding CDM group, that is, the above-mentioned second time-frequency resource.

[0416] Implementation method three: the third indication information indicates the number of ports N, and N CSI-RS ports are associated with the second time-frequency resources.

[0417] In the case of the third implementation, time-frequency resource #1 includes time-frequency resources associated with N CSI-RS ports; the second time-frequency resource includes time-frequency resources associated with (MN) CSI-RS ports other than the N CSI-RS ports among the M CSI-RS ports. Alternatively, time-frequency resource #1 includes time-frequency resources associated with (MN) CSI-RS ports other than the N CSI-RS ports among the M CSI-RS ports; the second time-frequency resource includes time-frequency resources associated with the N CSI-RS ports.

[0418] As a possible implementation manner, the antenna of the network device is configured as a single-panel antenna, or in other words, the codebook type is configured as a single-panel antenna.

[0419] In this implementation, the CSI-RS port index is: 0 to N / 2-1, and (0 to N / 2-1) + M / 2; or, in this implementation, the CSI-RS port index is: M-(0 to N / 2-1)-1, and M / 2-(0 to N / 2-1)-1, where M is the total number of antenna ports of the network device.

[0420] For example, CSI-RS ports with CSI-RS port indices of 0 to N / 2-1 and (0 to N / 2-1)+M / 2 are associated with time-frequency resource #1 that can be used to send or receive the first signal; CSI-RS ports with CSI-RS port indices of M-(0 to N / 2-1)-1 and M / 2-(0 to N / 2-1)-1 are associated with the second time-frequency resource that cannot be used to send or receive the first signal.

[0421] As another possible implementation, the antenna of the network device is configured as a double-panel antenna, or in other words, the codebook type is configured as a double-panel antenna.

[0422] In this implementation, the CSI-RS port index is: 0 to N / 2-1, or, Alternatively, in this implementation, the CSI-RS port index is: M-(0~N / 2-1)-1, or (0~N / 2-1)+M / 2, where M is the total number of antenna ports of the network device.

[0423] For example, the CSI-RS port index is 0 to N / 2-1, or, The CSI-RS port with the CSI-RS index of M-(0 to N / 2-1)-1 or (0 to N / 2-1)+M / 2 is associated with the second time-frequency resource that cannot be used for sending or receiving the first signal. Optionally, the network device may further send fourth indication information to the terminal device, indicating that the CSI-RS port index is one of the above methods.

[0424] In this embodiment, the third indication information may be carried in any of the following ways:

[0425] The third indication information is configured in the first ZP CSI-RS resource, and the third indication information indicates the second time-frequency resource in the first ZP CSI-RS resource;

[0426] or,

[0427] The third indication information is configured in the first ZP CSI-RS resource set, and the third indication information indicates the second time-frequency resource of each ZP CSI-RS resource in the first ZP CSI-RS resource set;

[0428] or,

[0429] The third indication information is configured in the first ZP CSI-RS resource set table, where the third indication information indicates the second time-frequency resource of each ZP CSI-RS resource in the first ZP CSI-RS resource set table;

[0430] or,

[0431] The third indication information is configured in the PDSCH configuration (e.g., the higher layer information element PDSCH-Config), and the third indication information indicates the second time-frequency resource of each ZP CSI-RS resource in all ZP CSI-RS resource set tables;

[0432] or,

[0433] The third indication information is configured in the CSI reporting resource setting (eg, CSI Reporting Setting or high-layer information element CSI-ReportCofig), and the third indication information indicates the second time-frequency resource of each ZP CSI-RS resource in all ZP CSI-RS resource set tables.

[0434] It should be noted that if the one or more ZP CSI-RS resources are semi-persistent ZP CSI-RS resources, it is necessary to activate / deactivate the ZP CSI-RS resources through a message; if the one or more ZP CSI-RS resources are aperiodic ZP CSI-RS resources, it is necessary to trigger the ZP CSI-RS resources through a message. The method flow shown in Figure 9 may also include:

[0435] S940, the network device sends an activation / deactivation message to the terminal device, and correspondingly, the terminal device receives the activation / deactivation message from the network device.

[0436] The activation / deactivation message may be a MAC CE, which carries a field indicating activation / deactivation of ZP CSI-RS resources.

[0437] Optionally, the activation / deactivation message indicates a ZP CSI-RS resource set that is activated / deactivated in the semi-persistent ZP CSI-RS resource set table.

[0438] S950: The network device sends a trigger message to the terminal device. Correspondingly, the terminal device receives the trigger message from the network device.

[0439] The triggering message may be a DCI, which carries a field indicating the triggering of ZP CSI-RS resources.

[0440] Optionally, the trigger message indicates a triggered ZP CSI-RS resource set in the aperiodic ZP CSI-RS resource set table.

[0441] Furthermore, in this embodiment, after the network device completes resource configuration through the first indication information, the second indication information, and the third indication information, and activates / deactivates, or triggers the corresponding resources, it can send a first signal to the terminal device. The method flow shown in FIG9 also includes:

[0442] S960: The network device sends a first signal to the terminal device. Correspondingly, the terminal device receives the first signal from the network device.

[0443] Specifically, the network device will not send the first signal on the second time-frequency resource included in any ZP CSI-RS resource indicated by the third indication information; the terminal device will not receive the first signal on the second time-frequency resource included in any ZP CSI-RS resource indicated by the third indication information.

[0444] For example, the network device will not send the first signal on the second time-frequency resource included in any ZP CSI-RS resource in the configured periodic ZP CSI-RS resource set; the terminal device will not receive the first signal on the second time-frequency resource included in any ZP CSI-RS resource in the configured periodic ZP CSI-RS resource set.

[0445] For example, the network device will not send the first signal on the second time-frequency resource included in any ZP CSI-RS resource in the activated ZP CSI-RS resource set in the configured semi-persistent ZP CSI-RS resource set table; the terminal device will not receive the first signal on the second time-frequency resource included in any ZP CSI-RS resource in the activated ZP CSI-RS resource set in the configured semi-persistent ZP CSI-RS resource set table.

[0446] For another example, the network device will not send the first signal on the second time-frequency resource included in any ZP CSI-RS resource in the triggered ZP CSI-RS resource set in the configured non-periodic ZP CSI-RS resource set table; the terminal device will not receive the first signal on the second time-frequency resource included in any ZP CSI-RS resource in the ZP CSI-RS resource set triggered by the third information in the configured non-periodic ZP CSI-RS resource set table.

[0447] In the communication method shown in Figure 9, the network device sends a third indication information to the terminal device, indicating the second time-frequency resource in the first ZP CSI-RS resource, and the second time-frequency resource cannot be used to send or receive signals, so that the terminal device can receive the first signal on other resources except the second time-frequency resource in the first time-frequency resource for receiving the first signal indicated by the first indication information, wherein the second time-frequency resource is located on the SBFD time unit, so as to realize the configuration of required resources on different time units in scenarios with different channel environments and interference environments on the SBFD time unit and the non-SBFD time unit, thereby improving the flexibility of resource configuration.

[0448] It should be understood that the size of the serial numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0449] It should also be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0450] It should also be understood that in some of the above embodiments, the devices in the existing network architecture are mainly used as examples for illustrative description (such as network devices, terminal devices, etc.), and it should be understood that the embodiments of the present application are not limited to the specific form of the devices. For example, devices that can achieve the same functions in the future are applicable to the embodiments of the present application.

[0451] It is understandable that in the above-mentioned various method embodiments, the methods and operations implemented by devices (such as network devices, terminal devices) can also be implemented by components of the devices (such as chips or circuits).

[0452] The communication method provided in the embodiments of the present application is described in detail above with reference to Figures 7 and 9 . The communication method is primarily described from the perspective of interaction between a terminal device and a network device. It is understood that, in order to implement the aforementioned functions, the terminal device and the network device include hardware structures and / or software modules corresponding to the respective functions.

[0453] Those skilled in the art should be aware that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0454] The communication device provided in this application is described in detail below with reference to Figures 12 to 14. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for matters not described in detail, reference can be made to the method embodiment above. For the sake of brevity, some contents will not be repeated.

[0455] In the embodiment of the present application, the functional modules of the transmitting device or the receiving device can be divided according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The following is an example of dividing each functional module according to each function.

[0456] Figure 12 is a schematic block diagram of a communication device 10 provided in an embodiment of the present application. The device 10 includes a transceiver module 11 and a processing module 12. The transceiver module 11 can implement corresponding communication functions, and the processing module 12 is used to process data. In other words, the transceiver module 11 is used to perform operations related to receiving and sending, while the processing module 12 is used to perform operations other than receiving and sending. The transceiver module 11 can also be referred to as a communication interface or a communication unit.

[0457] Optionally, the device 10 may further include a storage module 13, which may be used to store instructions and / or data. The processing module 12 may read the instructions and / or data in the storage module so that the device implements the actions of the devices in the aforementioned method embodiments.

[0458] In one design, the apparatus 10 may correspond to the terminal device in the above method embodiment, or a component (such as a chip) of the terminal device.

[0459] The device 10 can implement the steps or processes executed by the terminal device in the above method embodiment, wherein the transceiver module 11 can be used to execute the transceiver-related operations of the terminal device in the above method embodiment, and the processing module 12 can be used to execute the processing-related operations of the terminal device in the above method embodiment.

[0460] In one possible implementation, the transceiver module 11 is configured to receive a first message indicating reception of a first signal. The transceiver module 11 is configured to receive a second message indicating a first resource set including a first resource and a second resource, wherein the time domain resources of the first resource are located in an SBFD time unit, and the time domain resources of the second resource are located in a non-SBFD time unit. The transceiver module 11 is configured to receive the first signal on resources other than the first resource and the second resource.

[0461] In another possible implementation, the transceiver module 11 is configured to receive first indication information, the first indication information indicating reception of a first signal on a first time-frequency resource. The transceiver module 11 is configured to receive second indication information, the second indication information indicating a first ZP CSI-RS resource, the first ZP CSI-RS resource being a time-frequency resource not used for receiving the first signal in a non-SBFD time unit. The transceiver module 11 is configured to receive third indication information, the third indication information indicating a second time-frequency resource, the second time-frequency resource being a subset of the first ZP CSI-RS resource, the second time-frequency resource being a time-frequency resource not used for receiving the first signal in an SBFD time unit. The transceiver module 11 is configured to receive the first signal on a third time-frequency resource within the first time-frequency resource in an SBFD time unit, the third time-frequency resource being a time-frequency resource within the first time-frequency resource excluding the second time-frequency resource. The transceiver module 11 is configured to receive a first signal on a fourth time-frequency resource in the first time-frequency resources in a non-SBFD time unit, where the fourth time-frequency resource is a time-frequency resource in the first time-frequency resources excluding the first ZP CSI-RS resource. The first time-frequency resource overlaps with the second time-frequency resource, and the first time-frequency resource overlaps with a time-frequency resource in the first ZP CSI-RS resource excluding the second time-frequency resource.

[0462] When the device 10 is used to execute the method in Figure 7, the transceiver module 11 can be used to execute the steps of sending and receiving information in the method, such as steps S710, S720, S730 and S740; the processing module 12 can be used to execute the processing steps in the method.

[0463] When the device 10 is used to execute the method in Figure 9, the transceiver module 11 can be used to execute the steps of sending and receiving information in the method, such as steps S910, S920, S930, S940, S950 and S960; the processing module 12 can be used to execute the processing steps in the method.

[0464] It should be understood that the specific process of each unit executing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0465] In another design, the apparatus 10 may correspond to the network device in the above method embodiment, or a component (such as a chip) of the network device.

[0466] The device 10 can implement the steps or processes executed by the network device in the above method embodiment, wherein the transceiver module 11 can be used to perform the transceiver-related operations of the network device in the above method embodiment, and the processing module 12 can be used to perform the processing-related operations of the network device in the above method embodiment.

[0467] In one possible implementation, the transceiver module 11 is configured to send a first message indicating reception of a first signal. The transceiver module 11 is configured to send a second message indicating a first resource set including a first resource and a second resource, wherein the time domain resources of the first resource are located in an SBFD time unit, and the time domain resources of the second resource are located in a non-SBFD time unit. The transceiver module 11 is configured to send the first signal using resources other than the first resource and the second resource.

[0468] In another possible implementation, the transceiver module 11 is configured to send first indication information, where the first indication information indicates receiving a first signal on a first time-frequency resource. The transceiver module 11 is configured to send second indication information, where the second indication information indicates a first ZP CSI-RS resource, which is a time-frequency resource not used for receiving the first signal in a non-SBFD time unit. The transceiver module 11 is configured to send third indication information, where the third indication information indicates a second time-frequency resource, which is a subset of the first ZP CSI-RS resource and is a time-frequency resource not used for receiving the first signal in a sub-band full-duplex (SBFD) time unit. The transceiver module 11 is configured to send the first signal on a time-frequency resource other than the second time-frequency resource in the first time-frequency resource in an SBFD time unit. The transceiver module 11 is configured to send the first signal on a fourth time-frequency resource in the first time-frequency resource in a non-SBFD time unit, where the fourth time-frequency resource is a time-frequency resource other than the first ZP CSI-RS resource in the first time-frequency resource. The first time-frequency resource overlaps with the second time-frequency resource, and the first time-frequency resource overlaps with the time-frequency resources in the first ZP CSI-RS resource except the second time-frequency resource.

[0469] When the device 10 is used to execute the method in Figure 7, the transceiver module 11 can be used to execute the steps of sending and receiving information in the method, such as steps S710, S720, S730 and S740; the processing module 12 can be used to execute the processing steps in the method.

[0470] When the device 10 is used to execute the method in Figure 9, the transceiver module 11 can be used to execute the steps of sending and receiving information in the method, such as steps S910, S920, S930, S940, S950 and S960; the processing module 12 can be used to execute the processing steps in the method.

[0471] It should be understood that the specific process of each unit executing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0472] It should also be understood that the device 10 here is embodied in the form of a functional module. The term "module" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and memory for executing one or more software or firmware programs, a combined logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art will understand that the device 10 may be specifically the mobile management network element in the above-mentioned embodiment, and may be used to execute the various processes and / or steps corresponding to the mobile management network element in the above-mentioned method embodiments; or, the device 10 may be specifically the terminal device in the above-mentioned embodiment, and may be used to execute the various processes and / or steps corresponding to the terminal device in the above-mentioned method embodiments. To avoid repetition, it will not be described here.

[0473] The apparatus 10 of each of the above-described solutions has the function of implementing the corresponding steps performed by the devices (such as terminal devices and network devices) in the above-described methods. This function can be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more modules corresponding to the above-described functions; for example, the transceiver module can be replaced by a transceiver (for example, the transmitting unit in the transceiver module can be replaced by a transmitter, and the receiving unit in the transceiver module can be replaced by a receiver), and other units, such as the processing module, can be replaced by a processor to respectively perform the transceiver operations and related processing operations in each method embodiment.

[0474] In addition, the transceiver module 11 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing module may be a processing circuit.

[0475] Figure 13 is a schematic diagram of another communication device 20 provided in an embodiment of the present application. Device 20 includes a processor 21, which is configured to execute computer programs or instructions stored in memory 22, or read data / signaling stored in memory 22, to perform the methods described in the above method embodiments. Optionally, there may be one or more processors 21.

[0476] Optionally, as shown in FIG13 , the device 20 further includes a memory 22 for storing computer programs or instructions and / or data. The memory 22 may be integrated with the processor 21 or may be separately provided. Optionally, there may be one or more memories 22.

[0477] Optionally, as shown in Figure 13, the device 20 further includes a transceiver 23, which is used to receive and / or send signals. For example, the processor 21 is used to control the transceiver 23 to receive and / or send signals.

[0478] As a solution, the apparatus 20 is used to implement the operations performed by the terminal device in each of the above method embodiments.

[0479] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0480] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0481] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

[0482] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0483] 14 is a schematic diagram of a chip system 30 provided in an embodiment of the present application. The chip system 30 (or also referred to as a processing system) includes a logic circuit 31 and an input / output interface 32.

[0484] The logic circuit 31 may be a processing circuit in the chip system 30. The logic circuit 31 may be coupled to a storage unit and call instructions in the storage unit so that the chip system 30 can implement the methods and functions of the various embodiments of the present application. The input / output interface 32 may be an input / output circuit in the chip system 30, outputting information processed by the chip system 30 or inputting data or signaling information to be processed into the chip system 30 for processing.

[0485] As a solution, the chip system 30 is used to implement the operations performed by the terminal device in the above various method embodiments.

[0486] For example, the logic circuit 31 is used to implement the processing-related operations performed by the terminal device in the above method embodiment; the input / output interface 32 is used to implement the sending and / or receiving-related operations performed by the terminal device in the above method embodiment.

[0487] An embodiment of the present application further provides a computer-readable storage medium on which computer instructions for implementing the methods executed by the device in the above-mentioned method embodiments are stored.

[0488] For example, when the computer program is executed by a computer, the computer can implement the methods executed by the terminal device or the network device in each embodiment of the above method.

[0489] An embodiment of the present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by a terminal device or a network device in the above-mentioned method embodiments.

[0490] An embodiment of the present application also provides a communication system, including the aforementioned terminal device and network device.

[0491] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0492] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0493] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0494] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0495] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0496] 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.

[0497] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0498] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: receiving a first message, wherein the first message indicates receiving a first signal; receiving a second message indicating a first resource set including a first resource and a second resource, wherein a time domain resource of the first resource is located on a sub-band full-duplex SBFD time unit, and a time domain resource of the second resource is located on a non-SBFD time unit; The first signal is received on resources other than the first and second resources.

2. The method according to claim 1, characterized in that The first resource set includes one or more of the following: Two periodic zero-power channel state information reference signal ZP CSI-RS resource sets, two semi-persistent ZP CSI-RS resource set tables, or two aperiodic ZP CSI-RS resource set tables, the two periodic ZP CSI-RS resource sets include a first periodic ZP CSI-RS resource set and a second periodic ZP CSI-RS resource set, the two semi-persistent ZP CSI-RS resource set tables include a first semi-persistent ZP CSI-RS resource set table and a second semi-persistent ZP CSI-RS resource set table, the two aperiodic ZP CSI-RS resource set tables include a first aperiodic ZP CSI-RS resource set table and a second aperiodic ZP CSI-RS resource set table; The first resource is included in the first periodic ZP CSI-RS resource set, and the second resource is included in the second periodic ZP CSI-RS resource set; or, The first resource is included in the first semi-persistent ZP CSI-RS resource set table, and the second resource is included in the second semi-persistent ZP CSI-RS resource set table; or, The first resource is included in the first aperiodic ZP CSI-RS resource set table, and the second resource is included in the second aperiodic ZP CSI-RS resource set table.

3. The method according to claim 2, characterized in that If the first resource is included in the first semi-persistent ZP CSI-RS resource set table, and the second resource is included in the second semi-persistent ZP CSI-RS resource set table, the method further includes: receiving a third message, wherein the third message includes a first field and a second field; The first field activates the first resource in the first semi-persistent ZP CSI-RS resource set table, and the second field activates the second resource in the second semi-persistent ZP CSI-RS resource set table; or, The first field deactivates the third resource in the first semi-persistent ZP CSI-RS resource set table, and the second field deactivates the fourth resource in the second semi-persistent ZP CSI-RS resource set table.

4. The method according to claim 2, characterized in that: If the first resource is included in the first aperiodic ZP CSI-RS resource set table, and the second resource is included in the second aperiodic ZP CSI-RS resource set table, the method further includes: A fourth message is received, the fourth message comprising a third field and a fourth field, the third field triggering the first resource in the first non-periodic ZP CSI-RS resource set table, and the fourth field triggering the second resource in the second non-periodic ZP CSI-RS resource set table.

5. The method according to claim 1, characterized in that The first resource set includes one or more of the following: A periodic non-zero power channel state information reference signal ZP CSI-RS resource set table, a semi-persistent ZP CSI-RS resource set table, or an aperiodic ZP CSI-RS resource set table; Among them, the periodic ZP CSI-RS resource set table includes less than or equal to 2 ZP CSI-RS resource sets, the semi-persistent ZP CSI-RS resource set table includes less than or equal to 32 ZP CSI-RS resource sets, and the non-periodic ZP CSI-RS resource set table includes less than or equal to 6 or 7 ZP CSI-RS resource sets.

6. The method according to claim 5, characterized in that If the first resource and the second resource are included in the semi-persistent ZP CSI-RS resource set table, the method further includes: receiving a fifth message, the fifth message comprising a fifth field and a sixth field, the fifth field activating the first resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field activating the second resource in the semi-persistent ZP CSI-RS resource set table; or, The fifth field deactivates the third resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field deactivates the fourth resource in the semi-persistent ZP CSI-RS resource set table.

7. The method according to claim 5, characterized in that If the first resource and the second resource are included in the aperiodic ZP CSI-RS resource set table, the method further includes: A sixth message is received, wherein the sixth message includes a seventh field and an eighth field, wherein the seventh field triggers the first resource in the non-periodic ZP CSI-RS resource set table, and the eighth field triggers the second resource in the non-periodic ZP CSI-RS resource set table.

8. The method according to claim 1, characterized in that The first resource set includes one or more of the following: A periodic non-zero power channel state information reference signal ZP CSI-RS resource set, a semi-persistent ZP CSI-RS resource set table, or a non-periodic ZP CSI-RS resource set table, each of the ZP CSI-RS resource sets includes less than or equal to 16 ZP CSI-RS resources, each of the ZP CSI-RS resources includes a first ZP CSI-RS sub-resource and a second ZP CSI-RS sub-resource, the first resource belongs to the first ZP CSI-RS sub-resource, and the second resource belongs to the second ZP CSI-RS sub-resource.

9. The method according to claim 8, characterized in that The first ZP CSI-RS sub-resource or the second ZP CSI-RS sub-resource includes at least one of the following parameters: Resource mapping parameters, period, or offset parameters.

10. A communication method, characterized in that: include: Sending a first message, wherein the first message indicates receiving a first signal; Sending a second message, where the second message indicates a first resource set including a first resource and a second resource, where a time domain resource of the first resource is located in a sub-band full-duplex SBFD time unit, and a time domain resource of the second resource is located in a non-SBFD time unit; The first signal is sent on resources other than the first and second resources.

11. The method according to claim 10, characterized in that The first resource set includes one or more of the following: Two periodic zero-power channel state information reference signal ZP CSI-RS resource sets, two semi-persistent ZP CSI-RS resource set tables, or two aperiodic ZP CSI-RS resource set tables, the two periodic ZP CSI-RS resource sets include a first periodic ZP CSI-RS resource set and a second periodic ZP CSI-RS resource set, the two semi-persistent ZP CSI-RS resource set tables include a first semi-persistent ZP CSI-RS resource set table and a second semi-persistent ZP CSI-RS resource set table, the two aperiodic ZP CSI-RS resource set tables include a first aperiodic ZP CSI-RS resource set table and a second aperiodic ZP CSI-RS resource set table; The first resource is included in the first periodic ZP CSI-RS resource set, and the second resource is included in the second periodic ZP CSI-RS resource set; or, The first resource is included in the first semi-persistent ZP CSI-RS resource set table, and the second resource is included in the second semi-persistent ZP CSI-RS resource set table; or, The first resource is included in the first aperiodic ZP CSI-RS resource set table, and the second resource is included in the second aperiodic ZP CSI-RS resource set table.

12. The method according to claim 11, characterized in that If the first resource is included in the first semi-persistent ZP CSI-RS resource set table, and the second resource is included in the second semi-persistent ZP CSI-RS resource set table, the method further includes: sending a third message, the third message comprising a first field and a second field, the first field activating the first resource in the first semi-persistent ZP CSI-RS resource set table, and the second field activating the second resource in the second semi-persistent ZP CSI-RS resource set table; or, The first field deactivates the third resource in the first semi-persistent ZP CSI-RS resource set table, and the second field deactivates the fourth resource in the second semi-persistent ZP CSI-RS resource set table.

13. The method according to claim 11, characterized in that If the first resource is included in the first aperiodic ZP CSI-RS resource set table, and the second resource is included in the second aperiodic ZP CSI-RS resource set table, the method further includes: A fourth message is sent, wherein the fourth message includes a third field and a fourth field, wherein the third field triggers the first resource in the first non-periodic ZP CSI-RS resource set table, and the fourth field triggers the second resource in the second non-periodic ZP CSI-RS resource set table.

14. The method according to claim 10, characterized in that The first resource set includes one or more of the following: A periodic non-zero power channel state information reference signal ZP CSI-RS resource set table, a semi-persistent ZP CSI-RS resource set table, or an aperiodic ZP CSI-RS resource set table, wherein the periodic ZP CSI-RS resource set table includes less than or equal to 2 ZP CSI-RS resource sets, the semi-persistent ZP CSI-RS resource set table includes less than or equal to 32 ZP CSI-RS resource sets, and the aperiodic ZP CSI-RS resource set table includes less than or equal to 6 or 7 ZP CSI-RS resource sets.

15. The method according to claim 14, characterized in that If the first resource and the second resource are included in the semi-persistent ZP CSI-RS resource set table, the method further includes: sending a fifth message, the fifth message comprising a fifth field and a sixth field, the fifth field activating the first resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field activating the second resource in the semi-persistent ZP CSI-RS resource set table; or, The fifth field deactivates the third resource in the semi-persistent ZP CSI-RS resource set table, and the sixth field deactivates the semi-persistent Continue with the fourth resource in the ZP CSI-RS resource set table.

16. The method according to claim 14, characterized in that If the first resource and the second resource are included in the aperiodic ZP CSI-RS resource set table, the method further includes: A sixth message is sent, wherein the sixth message includes a seventh field and an eighth field, wherein the seventh field triggers the first resource in the non-periodic ZP CSI-RS resource set table, and the eighth field triggers the second resource in the non-periodic ZP CSI-RS resource set table.

17. A communication method, characterized in that: include: Receive first indication information, where the first indication information indicates receiving a first signal on a first time-frequency resource; receiving second indication information, where the second indication information indicates a first ZP CSI-RS resource, where the first ZP CSI-RS resource is a time-frequency resource that is not used for receiving the first signal in a non-subband full-duplex SBFD time unit; receiving third indication information, where the third indication information indicates a second time-frequency resource, where the second time-frequency resource is a subset of the first ZP CSI-RS resource, and the second time-frequency resource is a time-frequency resource that is not used for receiving the first signal on a SBFD time unit; In an SBFD time unit, receiving the first signal in a third time-frequency resource in the first time-frequency resource, where the third time-frequency resource is a time-frequency resource in the first time-frequency resource except the second time-frequency resource; In a non-SBFD time unit, receiving a first signal on a fourth time-frequency resource in the first time-frequency resources, where the fourth time-frequency resource is a time-frequency resource in the first time-frequency resources except the first ZP CSI-RS resource; The first time-frequency resource overlaps with the second time-frequency resource, and the first time-frequency resource overlaps with the time-frequency resources in the first ZP CSI-RS resource except the second time-frequency resource.

18. A communication method, characterized in that: include: Sending first indication information, where the first indication information indicates receiving a first signal on a first time-frequency resource; Sending second indication information, where the second indication information indicates a first ZP CSI-RS resource, where the first ZP CSI-RS resource is a time-frequency resource that is not used for receiving the first signal in a non-subband full-duplex SBFD time unit; Sending third indication information, where the third indication information indicates a second time-frequency resource, where the second time-frequency resource is a subset of the first ZP CSI-RS resource, and the second time-frequency resource is a time-frequency resource that is not used for receiving the first signal in an SBFD time unit; In an SBFD time unit, sending the first signal on a third time-frequency resource in the first time-frequency resource, where the third time-frequency resource is a time-frequency resource in the first time-frequency resource except the second time-frequency resource; In a non-SBFD time unit, sending the first signal on a fourth time-frequency resource in the first time-frequency resources, where the fourth time-frequency resource is a time-frequency resource in the first time-frequency resources except the first ZP CSI-RS resource; The first time-frequency resource overlaps with the second time-frequency resource, and the first time-frequency resource overlaps with the time-frequency resources in the first ZP CSI-RS resource except the second time-frequency resource.

19. The method according to claim 17 or 18, characterized in that The third indication information indicates the second time-frequency resource, including: The third indication information indicates at least one channel state information reference signal CSI-RS port, and the at least one CSI-RS port is associated with the second time-frequency resource.

20. The method according to claim 17 or 18, characterized in that The third indication information indicates the second time-frequency resource, including: The third indication information indicates at least one code division multiplexing CDM group, and the at least one CDM group is associated with the second time-frequency resources.

21. The method according to claim 17 or 18, characterized in that The third indication information indicates the second time-frequency resource, including: The third indication information indicates the number of CSI-RS ports N, and the N CSI-RS ports are associated with the second time-frequency resources.

22. The method according to claim 21, characterized in that If the codebook type is configured as a single panel, the codebook type is related to the antenna configuration of the network device, and the index of the N CSI-RS ports includes: and or, and M / 2-(0~N / 2-1)-1, Wherein, M indicates the total number of antenna ports of the network device.

23. The method according to claim 21, characterized in that If the codebook type is configured as a double-panel, the codebook type is related to the antenna configuration of the network device, and the indexes of the N CSI-RS ports include: and or, and (0~N / 2-1)+M / 2, Wherein, M indicates the total number of antenna ports of the network device.

24. The method according to any one of claims 17 to 23, characterized in that The third indication information is configured in the first ZP CSI-RS resource, and the third indication information indicates the second time-frequency resource in the first ZP CSI-RS resource; or, The third indication information is configured in the first ZP CSI-RS resource set, and the third indication information indicates that the first ZP CSI-RS resource set The second time-frequency resource of each ZP CSI-RS resource in the source set; or, The third indication information is configured in the first ZP CSI-RS resource set table, and the third indication information indicates the second time-frequency resource of each ZP CSI-RS resource in the first ZP CSI-RS resource set table; or, The third indication information is configured in the PDSCH configuration or the CSI reporting resource setting, and the third indication information indicates the second time-frequency resource of each ZP CSI-RS resource in all ZP CSI-RS resource set tables.

25. A communication device, characterized in that: Used to implement the method as described in any one of claims 1 to 9, or used to implement the method as described in any one of claims 17 or 19 to 24.

26. The communication device according to claim 25, characterized in that The communication device includes a terminal device or a chip.

27. A communication device, characterized in that: Used to implement the method as claimed in any one of claims 10 to 16, or used to implement the method as claimed in any one of claims 18 to 24.

28. The communication device according to claim 27, characterized in that The communication device includes a network device or a chip.

29. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed, the method according to any one of claims 1 to 24 is performed.

30. A computer program, characterized in that When the computer program is executed, the method according to any one of claims 1 to 24 is performed.

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