Communication method and apparatus

Abstract

A communication method and apparatus. The method comprises: a terminal receives first information, the first information indicating an aperiodic triggering state, the aperiodic triggering state corresponding to a first reference signal (RS) resource set, and a time unit occupied by the first reference signal resource set comprising an SBFD symbol and a non-SBFD symbol; and the terminal receives a reference signal on the first reference signal resource set, and sends first channel state information (CSI) on the basis of the first information, the first channel state information being determined on the basis of the reference signal received on a reference signal resource occupying the SBFD symbol, or the first channel state information being determined on the basis of the reference signal received on a reference signal resource occupying the non-SBFD symbol. By using the above-described method, improvement of a design related to a communication scenario in which an SBFD symbol exists in a slot can be achieved, thereby ensuring that a terminal and an access network device have a consistent understanding of a CSI-RS on the basis of which CSI is determined.

Description

A communication method and apparatus

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411596811.2, filed on November 8, 2024, entitled "A Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of communications, and in particular to a communication method and apparatus. Background Technology

[0004] To increase uplink coverage and reduce uplink transmission latency, access network equipment can issue time division duplex (TDD) and subband full duplex (SBFD) configurations to terminals. Subsequently, terminals can determine which symbols in a time slot are SBFD symbols and which are non-SBFD symbols based on the TDD and SBFD configurations. Notably, within a time slot, the downlink available frequency domain ranges corresponding to SBFD symbols and non-SBFD symbols (e.g., downlink symbols) can be different.

[0005] For communication scenarios with SBFD symbols in the time slots, how to improve the relevant design and implementation in this communication scenario to increase uplink coverage while ensuring communication performance is a problem worth paying attention to. Summary of the Invention

[0006] This application provides a communication method and apparatus to improve the design and ensure communication performance in SBFD communication scenarios.

[0007] Firstly, embodiments of this application provide a communication method that can be applied to a terminal side, such as a terminal or a communication module / processing module within the terminal, or a circuit or chip in the terminal responsible for communication functions (such as a modem chip, also known as a baseband chip, or a system-on-a-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip), or a circuit or chip in the terminal responsible for processing functions (such as a graphics processing unit). Taking a terminal as an example, the method involves the terminal receiving first information indicating an aperiodic triggering state. This aperiodic triggering state corresponds to a first set of reference signal resources, and the time units occupied by the first set of reference signal resources include sub-band full-duplex SBFD symbols and non-SBFD symbols. The terminal receives reference signals on the first set of reference signal resources and sends first channel state information based on the first information. The first channel state information is determined based on reference signals received on reference signal resources occupying SBFD symbols, and these SBFD symbol reference signal resources belong to the first set of reference signal resources. Alternatively, the first channel state information is determined based on reference signals received on reference signal resources occupying non-SBFD symbols, and these non-SBFD symbol reference signal resources belong to the first set of reference signal resources.

[0008] Using the above method, we can improve the design of communication scenarios with SBFD symbols in the time slot, increase uplink coverage while ensuring communication performance, and ensure that the terminal and access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined.

[0009] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0010] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0011] In one possible design, the terminal receives a channel state information reporting configuration corresponding to the first set of reference signal resources; wherein, the channel state information reporting configuration corresponding to the first set of reference signal resources includes first indication information, the first indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0012] The above design ensures that the terminal and access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined, and the access network equipment can flexibly determine the valid symbol type according to the situation.

[0013] In one possible design, the first indication information is effective only if the time unit occupied by the first reference signal resource set includes both SBFD symbols and non-SBFD symbols.

[0014] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set, and the first indication information is effective only if the time unit occupied by the first reference signal resource set includes both SBFD symbols and non-SBFD symbols.

[0015] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds to a second reference signal resource set, which is a periodic reference signal resource set or a semi-persistent reference signal resource set; the terminal receives a channel state information reporting configuration corresponding to the second reference signal resource set; wherein, the channel state information reporting configuration corresponding to the second reference signal resource set includes second indication information, the second indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0016] The above design ensures that the terminal and access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined, and can save signaling overhead.

[0017] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds one-to-one with M reference signal resource sets, which are either periodic or semi-persistent reference signal resource sets, where M is an integer greater than or equal to 2; the terminal receives M channel state information reporting configurations, each of the M reference signal resource sets corresponding one-to-one with the M channel state information reporting configurations, and the types of symbols used to determine the channel state information indicated by the M channel state information reporting configurations are all the same; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0018] The above design ensures that the terminal and access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined, and can save signaling overhead.

[0019] In one possible design, if the number of non-SBFD symbols occupied by the first reference signal resource set is greater than or equal to the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying non-SBFD symbols; if the number of non-SBFD symbols occupied by the first reference signal resource set is less than the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying SBFD symbols.

[0020] In one possible design, if the number of reference signal resources occupying non-SBFD symbols is greater than or equal to the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols; if the number of reference signal resources occupying non-SBFD symbols is less than the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

[0021] The above design ensures that the terminal and access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined, and can save signaling overhead.

[0022] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0023] Secondly, this application provides a communication method that can be applied to the network side, such as an access network device, a module (e.g., circuit, chip, or chip system) within the access network device, or a logic node, logic module, or software capable of implementing all or part of the functions of the access network device. Taking the application of this method to an access network device as an example, in this method, the access network device sends first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first set of reference signal resources, and the time units occupied by the first set of reference signal resources include SBFD symbols and non-SBFD symbols; the access network device sends reference signals on the first set of reference signal resources and receives first channel state information, the first channel state information being determined based on reference signals received on reference signal resources occupying SBFD symbols, wherein the reference signal resources occupying SBFD symbols belong to the first set of reference signal resources; or the first channel state information being determined based on reference signals received on reference signal resources occupying non-SBFD symbols, wherein the reference signal resources occupying non-SBFD symbols belong to the first set of reference signal resources.

[0024] Using the above method, we can improve the design of communication scenarios with SBFD symbols in the time slot, increase uplink coverage while ensuring communication performance, and ensure that the terminal and access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined.

[0025] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0026] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0027] In one possible design, the access network device sends a channel state information reporting configuration corresponding to the first reference signal resource set; wherein, the channel state information reporting configuration corresponding to the first reference signal resource set includes first indication information, the first indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0028] In one possible design, the first indication information is effective only if the time unit occupied by the first reference signal resource set includes both SBFD symbols and non-SBFD symbols.

[0029] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic triggering state also corresponds to a second reference signal resource set, which is a periodic reference signal resource set or a semi-persistent reference signal resource set; the access network device sends a channel state information reporting configuration corresponding to the second reference signal resource set; wherein, the channel state information reporting configuration corresponding to the second reference signal resource set includes second indication information, the second indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0030] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds one-to-one with M reference signal resource sets, which are either periodic or semi-persistent reference signal resource sets, where M is an integer greater than or equal to 2; the access network device sends M channel state information reporting configurations, each of the M reference signal resource sets corresponding one-to-one with the M channel state information reporting configurations, and the types of symbols used to determine the channel state information indicated by the M channel state information reporting configurations are all the same; wherein, if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0031] In one possible design, if the number of non-SBFD symbols occupied by the first reference signal resource set is greater than or equal to the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying non-SBFD symbols; if the number of non-SBFD symbols occupied by the first reference signal resource set is less than the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying SBFD symbols.

[0032] In one possible design, if the number of reference signal resources occupying non-SBFD symbols is greater than or equal to the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols; if the number of reference signal resources occupying non-SBFD symbols is less than the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

[0033] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0034] Thirdly, this application provides a communication method that can be applied to a terminal side, such as a terminal or a communication module / processing module in the terminal, or a circuit or chip in the terminal responsible for communication functions, or a circuit or chip in the terminal responsible for processing functions. Taking the application of this method to a terminal as an example, in this method, the terminal receives first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time unit occupied by the first reference signal resource set includes SBFD symbols and non-SBFD symbols; sends first channel state information, the first channel state information being the channel state information determined based on the first reference signal resource set in the previous instance; or determines not to send the channel state information determined based on the first reference signal resource set.

[0035] Using the above method, we can improve the design of communication scenarios with SBFD symbols in the time slot, and ensure communication performance while increasing uplink coverage, thus simplifying the complexity of the terminal.

[0036] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0037] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0038] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0039] Fourthly, this application provides a communication method that can be applied to the network side, such as an access network device, a module (e.g., circuit, chip, or chip system) within the access network device, or a logic node, logic module, or software capable of implementing all or part of the functions of the access network device. Taking the application of this method to an access network device as an example, in this method, the access network device sends first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time unit occupied by the first reference signal resource set includes SBFD symbols and non-SBFD symbols; the access network device sends a reference signal on the first reference signal resource set and receives first channel state information, the first channel state information being determined previously based on the first reference signal resource set.

[0040] Using the above method, we can improve the design of communication scenarios with SBFD symbols in the time slot, and ensure communication performance while increasing uplink coverage, thus simplifying the complexity of the terminal.

[0041] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0042] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0043] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0044] Fifthly, this application provides a communication device, which includes a transceiver unit and a processing unit. The device can be a terminal, a module within a terminal, etc. The processing unit is used to control the operation of the transceiver unit; the transceiver unit is used to receive first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first set of reference signal resources, and the time units occupied by the first set of reference signal resources include sub-band full-duplex (SBFD) symbols and non-SBFD symbols; receive reference signals on the first set of reference signal resources, and transmit first channel state information according to the first information, the first channel state information being determined based on reference signals received on reference signal resources occupying SBFD symbols, wherein the reference signal resources occupying SBFD symbols belong to the first set of reference signal resources; or the first channel state information being determined based on reference signals received on reference signal resources occupying non-SBFD symbols, wherein the reference signal resources occupying non-SBFD symbols belong to the first set of reference signal resources.

[0045] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0046] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0047] In one possible design, the transceiver unit is configured to receive a channel state information reporting configuration corresponding to the first reference signal resource set; wherein the channel state information reporting configuration corresponding to the first reference signal resource set includes first indication information, the first indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0048] In one possible design, the first indication information is effective only if the time unit occupied by the first reference signal resource set includes both SBFD symbols and non-SBFD symbols.

[0049] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds to a second reference signal resource set, which is a periodic reference signal resource set or a semi-persistent reference signal resource set; the transceiver unit is configured to receive a channel state information reporting configuration corresponding to the second reference signal resource set; wherein, the channel state information reporting configuration corresponding to the second reference signal resource set includes second indication information, the second indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0050] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds one-to-one with M reference signal resource sets, which are either periodic or semi-persistent reference signal resource sets, where M is an integer greater than or equal to 2; the transceiver unit is used to receive M channel state information reporting configurations, where each of the M reference signal resource sets corresponds one-to-one with one of the M channel state information reporting configurations, and the types of symbols used to determine the channel state information indicated by the M channel state information reporting configurations are all the same; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0051] In one possible design, if the number of non-SBFD symbols occupied by the first reference signal resource set is greater than or equal to the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying non-SBFD symbols; if the number of non-SBFD symbols occupied by the first reference signal resource set is less than the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying SBFD symbols.

[0052] In one possible design, if the number of reference signal resources occupying non-SBFD symbols is greater than or equal to the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols; if the number of reference signal resources occupying non-SBFD symbols is less than the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

[0053] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0054] Sixthly, this application provides a communication device, which includes a transceiver unit and a processing unit. The device can be an access network device on the network side, a module within the access network device, etc. The processing unit is used to control the operation of the transceiver unit; the transceiver unit is used to transmit first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first set of reference signal resources, and the time units occupied by the first set of reference signal resources include SBFD symbols and non-SBFD symbols; transmit reference signals on the first set of reference signal resources, and receive first channel state information, the first channel state information being determined based on reference signals received on reference signal resources occupying SBFD symbols, wherein the reference signal resources occupying SBFD symbols belong to the first set of reference signal resources; or the first channel state information being determined based on reference signals received on reference signal resources occupying non-SBFD symbols, wherein the reference signal resources occupying non-SBFD symbols belong to the first set of reference signal resources.

[0055] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0056] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0057] In one possible design, the transceiver unit is configured to transmit a channel state information reporting configuration corresponding to the first reference signal resource set; wherein the channel state information reporting configuration corresponding to the first reference signal resource set includes first indication information, the first indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0058] In one possible design, the first indication information is effective only if the time unit occupied by the first reference signal resource set includes both SBFD symbols and non-SBFD symbols.

[0059] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds to a second reference signal resource set, which is a periodic reference signal resource set or a semi-persistent reference signal resource set; the transceiver unit is used to send a channel state information reporting configuration corresponding to the second reference signal resource set; wherein, the channel state information reporting configuration corresponding to the second reference signal resource set includes second indication information, the second indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0060] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds one-to-one with M reference signal resource sets, which are either periodic or semi-persistent reference signal resource sets, where M is an integer greater than or equal to 2; the transceiver unit is used to send M channel state information reporting configurations, where each of the M reference signal resource sets corresponds one-to-one with one of the M channel state information reporting configurations, and the types of symbols used to determine the channel state information indicated by the M channel state information reporting configurations are all the same; wherein, if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0061] In one possible design, if the number of non-SBFD symbols occupied by the first reference signal resource set is greater than or equal to the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying non-SBFD symbols; if the number of non-SBFD symbols occupied by the first reference signal resource set is less than the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying SBFD symbols.

[0062] In one possible design, if the number of reference signal resources occupying non-SBFD symbols is greater than or equal to the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols; if the number of reference signal resources occupying non-SBFD symbols is less than the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

[0063] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0064] In a seventh aspect, this application provides a communication device, which includes a transceiver unit and a processing unit. The device can be a terminal, a module within a terminal, etc. The processing unit is used to control the operation of the transceiver unit; the transceiver unit is used to receive first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols; the transceiver unit is used to transmit first channel state information, the first channel state information being the channel state information determined previously based on the first reference signal resource set; or the processing unit is used to determine not to transmit the channel state information determined based on the first reference signal resource set.

[0065] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0066] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0067] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0068] Eighthly, this application provides a communication device, which includes a transceiver unit and a processing unit. The device can be an access network device on the network side, a module within the access network device, etc. The processing unit is used to control the operation of the transceiver unit; the transceiver unit is used to transmit first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time unit occupied by the first reference signal resource set includes SBFD symbols and non-SBFD symbols; transmit reference signals on the first reference signal resource set; and receive first channel state information, the first channel state information being determined previously based on the first reference signal resource set.

[0069] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0070] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0071] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0072] Ninthly, this application provides a communication device that has the functions of implementing the first or third aspect described above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the first or third aspect described above. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0073] In a tenth aspect, this application provides a communication device that has the functions of implementing the second or fourth aspect described above. For example, the communication device includes modules, units, or means that perform the operations involved in the second or fourth aspect described above. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0074] Eleventhly, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of the necessary computer programs or instructions for implementing the functions described in the second or fourth aspect above. The one or more processors can execute the computer programs or instructions, which, when executed, cause the communication device to implement the methods in any possible design or implementation of the second or fourth aspect above. The interface circuit is used to implement the communication functions within the communication device and / or the communication functions between the communication device and other devices or components.

[0075] In one possible design, the processor is used to communicate with other devices or components through the interface circuit.

[0076] In one possible design, the communication device may also include the memory.

[0077] In a twelfth aspect, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of the necessary computer programs or instructions for implementing the functions described in the first or third aspect above. The one or more processors are executable to carry out the computer programs or instructions, causing the communication device to implement the methods in any possible design or implementation of the first or third aspect above when executed. The interface circuit is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.

[0078] In one possible design, the processor is used to communicate with other devices or components through the interface circuit.

[0079] In one possible design, the communication device may also include the memory.

[0080] The aforementioned communication device may be a terminal, or a communication / processing module in the terminal, or a chip in the terminal responsible for communication functions such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module, or a circuit or chip in the terminal responsible for processing functions (such as a GPU).

[0081] In a thirteenth aspect, this application provides a communication system comprising an access network device and a terminal, wherein the terminal is configured to perform the method in any possible design of the first or third aspect described above, and the access network device is configured to perform the method in any possible design of the second or fourth aspect described above.

[0082] In a fourteenth aspect, this application provides a computer-readable storage medium storing computer-readable instructions that, when read and executed by a computer, cause the computer to perform any of the possible designs in the first to fourth aspects described above.

[0083] In a fifteenth aspect, this application provides a computer program product that, when read and executed by a computer, causes the computer to perform any of the possible designs in the first to fourth aspects described above. Attached Figure Description

[0084] Figure 1 shows a possible, non-limiting system schematic diagram;

[0085] Figure 2 shows a block diagram of a possible example of a terminal-side chip baseband implementation;

[0086] Figure 3A shows a schematic diagram of a possible FDD;

[0087] Figure 3B shows a schematic diagram of a possible TDD;

[0088] Figure 3C shows a schematic diagram of a possible SBFD;

[0089] Figure 4 shows a schematic diagram of a time-domain configuration of SBFD symbols;

[0090] Figure 5 shows a schematic diagram of a non-periodic CSI reporting;

[0091] Figure 6 shows an overview flowchart of a communication method;

[0092] Figures 7A to 7F illustrate the relationship between one or more reference signal resources included in the first reference signal resource set and the multiple symbols included in the time slot occupied by the first reference signal resource set.

[0093] Figure 8 shows an overview flowchart of another communication method;

[0094] Figure 9 shows an overview flowchart of another communication method;

[0095] Figure 10 shows a schematic diagram of the structure of a communication device according to this application;

[0096] Figure 11 shows a schematic diagram of another communication device in this application. Detailed Implementation

[0097] The specific implementations of this application are described below with reference to the accompanying drawings in the embodiments. However, the implementations of this application may also include combining these embodiments without departing from the spirit or scope of this application, such as using other embodiments and making structural changes. Therefore, the detailed description of the following embodiments should not be understood in a limiting sense. The terminology used in the embodiment section of this application is only used to explain the specific embodiments of this application and is not intended to limit this application.

[0098] The embodiments of this application can be applied to various communication systems, such as: long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, 5G systems or new radio (NR) systems, or to future communication systems or other similar communication systems, or ultra-wideband (UWB) systems, or wireless fidelity (WiFi) systems.

[0099] Figure 1 illustrates a possible, non-limiting system diagram. As shown in Figure 1, the communication system includes a radio access network (RAN) 100 and a core network (CN) 200. RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110) and at least one terminal (120a-120j in Figure 1, collectively referred to as 120). RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). Terminal 120 is wirelessly connected to RAN node 110. RAN node 110 is wirelessly or wired connected to core network 200. The core network equipment in core network 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and radio access network logical functions.

[0100] RAN 100 can be a cellular system related to the 3rd Generation Partnership Project (3GPP), such as 4G, 5G mobile communication systems, or future-oriented evolution systems. RAN 100 can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. RAN 100 can also be a communication system that integrates two or more of the above systems.

[0101] RAN node 110, sometimes also referred to as access network equipment, RAN entity, or access node, constitutes part of the communication system and assists terminals in achieving wireless access. Multiple RAN nodes 110 in the communication system can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal 120 are relative. For example, network element 120i in Figure 1 can be a helicopter or drone, which can be configured as a mobile base station. For terminals 120j accessing RAN 100 through network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes both referred to as communication devices. For example, network elements 110a and 110b in Figure 1 can be understood as communication devices with base station functions, and network elements 120a-120j can be understood as communication devices with terminal functions.

[0102] In one possible scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a base station in a future mobile communication system, or an access node in a WiFi system. The RAN node can be a macro base station (as shown in Figure 1, 110a), a micro base station or indoor station (as shown in Figure 1, 110b), a relay node or donor node, or a radio controller in a CRAN scenario. Optionally, the RAN node can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the access network equipment in vehicle-to-everything (V2X) technology can be a roadside unit (RSU). All or part of the functions of the RAN node in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The RAN node can also be equipped with communication modules, circuits, or chips that perform corresponding communication functions. The RAN node can also be configured with program instructions for performing corresponding communication functions, as well as corresponding program instructions. The RAN node in this application can also be a logical node, logical module, or software capable of implementing all or part of the RAN node's functions.

[0103] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, with each RAN node performing a portion of the base station's functions. For example, RAN nodes can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs), etc. CUs and DUs can be separate entities or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0104] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0105] It is understood that RAN nodes can be described in different ways. Unless otherwise specified in this application, the term "access network device" will be used.

[0106] A terminal can be a device or module that accesses the aforementioned communication system and has corresponding communication functions. A terminal can also be called a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, transportation vehicles with wireless communication capabilities, communication modules, etc. The embodiments of this application do not limit the device form of the terminal. A terminal typically contains a communication module, circuit, or chip that performs the corresponding communication function. The terminal can also be configured with program instructions for performing the corresponding communication function.

[0107] Figure 2 is an example block diagram of a terminal-side chip baseband implementation. The baseband can be implemented using a processing system that includes one or more processors. Processors include microprocessors (e.g., x86, ARM), microcontrollers, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), GPUs, programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to various functions. In other words, the processor used in the baseband can be used to implement the processes described below and any one or more of those processes.

[0108] A processing system can be implemented using a bus architecture, typically represented by a bus. A bus can include any number of interconnect buses and bridges, depending on the specific application and overall design constraints of the processing system. The bus communicatively couples various circuits together, including one or more processors (typically represented by a processor), memory, and computer-readable media (typically represented by a computer-readable media). The bus can also link various other circuits, such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further. The bus interface provides the interface between the bus and transceivers, and between the bus and the interface.

[0109] A transceiver provides a communication interface or means for communicating with various other devices via a wireless transmission medium. The transceiver may be coupled to an antenna array, and the transceiver and antenna array may be used together for communication with a corresponding network type. At least one interface (e.g., a network interface and / or a user interface) provides a communication interface or means for communication via an internal bus or via an external transmission medium.

[0110] The processor is responsible for managing the bus and general processing, including executing software stored on a computer-readable medium. When the processor executes the software, the software causes the processing system to perform the various functions described below for any particular device.

[0111] The functions that can be implemented by the processor, memory, and computer-readable medium include: encoding, decoding, rate matching, rate dematching, scrambling, descrambling, modulation, demodulation, layer mapping, fast Fourier transform (FFT), inverse fast Fourier transform (IFFT), inverse discrete Fourier transform (IDFT), precoding, resource element (RE) mapping, channel equalization, RE demapping, digital beamforming (BF), adding cyclic prefix (CP), removing CP, etc.

[0112] In this application, "sending information" can be understood as one device sending information to another device, or it can also be understood as one logical module within a device sending information to another logical module. For example, "access network device sending information" can be understood as the access network device sending information to another device (such as a terminal), or it can be understood as logical module 1 in the access network device sending information to logical module 2 in the access network device.

[0113] In this application, "receiving information" can be understood as one device receiving information from another device, or it can also be understood as a logical module within a device receiving information from another logical module. For example, "access network device receiving information" can be understood as the access network device receiving information from another device (such as a terminal), or it can be understood as logical module 1 in the access network device receiving information from logical module 2 in the access network device.

[0114] In this application, phrases such as "sending information to... (e.g., a terminal)" or related illustrations in the accompanying drawings can be understood as indicating that the destination of the information is a terminal. This can include sending information directly or indirectly to a terminal. Similarly, phrases such as "receiving information from... (e.g., a terminal)," "receiving information from... (e.g., a terminal)," or "receiving information sent by (e.g., a terminal)," or related illustrations in the accompanying drawings, can be understood as indicating that the source of the information is a terminal. This can include receiving information directly or indirectly from a terminal. Information may undergo necessary processing between the source and destination, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be interpreted similarly and will not be elaborated further here.

[0115] It is understood that the network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0116] The relevant terms used in the embodiments of this application will be explained below. It should be noted that these explanations are for the purpose of making the embodiments of this application easier to understand, and should not be regarded as a limitation on the scope of protection claimed by this application.

[0117] 1. Frequency division duplex (FDD) and TDD

[0118] The following explanation, in conjunction with Figures 3A and 3B, uses FDD and TDD in NR as examples.

[0119] FDD: As shown in 3A, in slot 0, the downlink bandwidth part (DL BWP) is used for downlink transmission, and in slot 0, the uplink bandwidth part (DL BWP) is used for uplink transmission. The DL BWP and UL BWP are located on different carriers and are separate in the frequency domain.

[0120] TDD: As shown in Figure 3B, the center frequency of the DL BWP and UL BWP can be the same, and their bandwidths can be the same or different. At any given time, the terminal (or access network device) can only perform uplink or downlink transmission. For example, in slot 0, the terminal (or access network device) can only perform downlink transmission; in slot 4, it can only perform uplink transmission; slot 3 is a flexible time slot, meaning it can be used for either uplink or downlink transmission, but not both simultaneously. The smallest granularity for uplink / downlink transmission switching is the symbol. For example, slot 3 is a flexible time slot, consisting of 14 or 12 orthogonal frequency division multiplexing (OFDM) symbols. The first M symbols are downlink symbols, the last N symbols are uplink symbols, and the middle 14-MN (or 12-MN) symbols are flexible symbols, where 0≤M≤14, 0≤N≤14, and M+N≤14. Downlink symbols are used for downlink transmission, uplink symbols are used for uplink transmission, and flexible symbols can be used for both uplink and downlink. The specific transmission direction is notified to the terminal by the access network device through radio resource control (RRC) signaling or downlink control information (DCI).

[0121] Compared to FDD, TDD occupies less frequency domain resources. However, in TDD, uplink and downlink transmissions cannot be performed simultaneously. For example, only downlink transmission can be performed in slot 0, and uplink transmission cannot be performed, which will lead to an increase in uplink transmission latency.

[0122] 2. SBFD

[0123] To address the issue of significant uplink latency in TDD, flexible duplexing, also known as complementary TDD (C-TDD) or full duplex, is currently under discussion. Among these, SBFD is a widely discussed form of flexible duplexing. Its core idea is that uplink and downlink transmission resources can be configured simultaneously on a specific symbol or time slot within a TDD system.

[0124] For example, as shown in Figure 3C, within a time slot, such as slot 0, there exists a frequency domain resource within the DL BWP. Uplink transmission can be performed on this frequency domain resource, thus enabling uplink transmission on slot 0 and reducing uplink latency. This frequency domain resource is typically referred to as the uplink subband. Downlink transmission can also occur on slot 0, meaning downlink transmission can also be performed on the downlink subband within the DL BWP. It is understood that Figure 3C is merely an example and not intended to limit the scope of this application.

[0125] Referring to Figure 3C, the terminal (or access network device) can perform uplink and downlink transmissions simultaneously in slot 0. Specifically, uplink transmission is performed in the uplink subband, and downlink transmission is performed in the downlink subband. That is, the terminal can perform uplink and downlink transmissions simultaneously in slot 0 (i.e., the terminal is a full-duplex terminal), and the terminal can also perform only uplink or downlink transmissions (i.e., the terminal is a half-duplex terminal device).

[0126] For example, for a terminal in RRC connected state, the access network device can configure the time and frequency domain positions of the SBFD subband within a TDD carrier via RRC signaling. As shown in Figure 3C, the access network device configures the time domain position of the SBFD subband in a semi-static manner via RRC signaling (e.g., TDD-UL-DL-Pattern).

[0127] Compared to TDD, SBFD offers more uplink resources, which can increase uplink coverage and reduce uplink transmission latency.

[0128] Based on the latest progress in standard discussions, access network devices will distribute TDD and SBFD configurations to terminals, including:

[0129] TDD configuration includes, but is not limited to: time slot indices for downlink time slots, uplink time slots, and flexible time slots; and symbol indices for uplink symbols, downlink symbols, and flexible symbols within flexible time slots. Specifically, downlink symbols in downlink time slots and flexible time slots are used for downlink data transmission; uplink symbols in uplink time slots and flexible time slots are used for uplink data transmission; and flexible symbols in flexible time slots can be used for both uplink and downlink data transmission.

[0130] SBFD configuration includes, but is not limited to, the following parameters: SBFD slot / symbol position and SBFD subband position within the SBFD slot. The SBFD slot / symbol position refers to some or all of the DL slots / symbols or flexible slots / symbols configured in the TDD configuration, i.e., converting some or all downlink slots / symbols or flexible slots / symbols into SBFD symbols. The SBFD subband position within the SBFD slot can be the frequency domain position of the UL word band (subband) and / or the DL subband.

[0131] For example, the access network device can explicitly configure the frequency domain position of the uplink subband, and the frequency domain position of the downlink subband can be determined based on the frequency domain position of the downlink carrier and the frequency domain position of the uplink subband. Alternatively, the access network device can also explicitly configure the frequency domain positions of both the uplink and downlink subbands.

[0132] The downlink symbols and / or flexible symbols can be further configured as SBFD symbols. The frequency domain resources on the SBFD symbols include both uplink and downlink subbands. Uplink and downlink transmissions can occur simultaneously on SBFD symbols (full-duplex terminal equipment), or only uplink or downlink transmissions can occur (half-duplex terminal equipment). Uplink transmissions can only occur on the uplink subband, and downlink transmissions can only occur on the downlink subband.

[0133] Non-SBFD symbols can be uplink symbols, downlink symbols, or flexible symbols. Uplink symbols can only perform uplink transmission, downlink symbols can only perform downlink transmission, and flexible symbols can perform both uplink and downlink transmission.

[0134] SBFD subbands refer to the frequency domain resources corresponding to SBFD symbols, that is, the frequency domain resources configured on SBFD symbols, including uplink subbands, downlink subbands, and possibly guard subbands.

[0135] For example, access network devices can configure DL symbols, UL symbols, and flexible symbols via the TDD-UL-DL-ConfigCommon parameter. DL symbols and / or flexible symbols can be further configured as SBFD symbols. SBFD symbols can start or end with any symbol within a slot. The time-domain period of the SBFD subband can be the same as the period configured in the uplink / downlink transmission period (dl-UL-TransmissionPeriodicity) of the TDD-UL-DL-Pattern; for example, as shown in Figure 4, the time-domain period of the SBFD subband is 5ms. Alternatively, the time-domain period of the SBFD subband can be an integer multiple of the period configured in the dl-UL-TransmissionPeriodicity of the TDD-UL-DL-Pattern.

[0136] For example, if a time slot is classified into three categories based on whether it includes SBFD symbols, the time slots are as follows:

[0137] SBFD time slot: All symbols in this time slot are SBFD symbols, such as the third and fourth time slots in a TDD cycle in Figure 4.

[0138] Non-SBFD time slots: All symbols in this time slot are non-SBFD symbols, such as the first and fifth time slots within a TDD cycle in Figure 4.

[0139] Hybrid time slot: This time slot includes both SBFD symbols and non-SBFD symbols, such as the second time slot within a TDD cycle in Figure 4.

[0140] 3. CSI-RS Resources

[0141] Currently, channel state information (CSI) measurement is based on CSI resources. CSI resources can include non-zero-power channel state information reference signals (NZP CSI-RS), CSI interference measurements (CSI-IM), and CSI synchronization signaling blocks (SSBs). NZP CSI-RS resources are used for channel or interference measurements, CSI-IM is used for interference measurements, and CSI-SSBs are used to configure a set of SSB resources within a cell for SSB measurements. In the following description, we will use NZP CSI-RS resources as an example, and refer to them simply as CSI-RS resources.

[0142] For example, the access network device configures the CSI-RS resource type as periodic, semi-persistent, or aperiodic by using the higher-layer signaling resource type (resourceType) in the CSI resource configuration.

[0143] In this context, periodic CSI-RS resources are configured via RRC signaling, and the CSI-RS resources take effect immediately. Access network devices periodically transmit CSI-RS data on these resources. For example, the transmission period of the CSI-RS corresponding to these resources is configured by RRC signaling, with the unit being time slots.

[0144] Semi-persistent CSI-RS resources are configured via RRC signaling, and then the access network device issues activation signaling to activate the CSI-RS resource. After the access network device issues the activation signaling, it periodically transmits CSI-RS messages on that CSI-RS resource until it receives signaling to deactivate the CSI-RS resource. For example, the transmission period of the CSI-RS corresponding to this CSI-RS resource is configured by RRC signaling, and the unit is time slots.

[0145] Aperiodic CSI-RS resources are activated by the access network device after the corresponding CSI-RS resources are configured by RRC signaling. After the access network device issues the activation signaling, it sends CSI-RS once or S times on the CSI-RS resource, where S is an integer greater than 1. The value of S is determined by the RRC signaling configuration and / or according to preset rules.

[0146] The time-frequency location of CSI-RS resources in each time slot is configured by RRC signaling. For example, a CSI-RS resource can occupy 1, 2 or 4 OFDM symbols in time, and occupy a minimum of 24 RBs and a maximum of the entire BWP in the frequency domain, with an allocation granularity of 4 resource blocks (RBs).

[0147] 4. CSI Reporting

[0148] For example, the access network device configures the type of the reporting resource bound to the CSI reporting configuration as periodic, semi-persistent, or aperiodic through the higher-layer signaling reporting configuration type (reportConfigType) in the CSI reporting configuration.

[0149] If the reporting resource type bound to the CSI reporting configuration is periodic, then the terminal periodically reports CSI, and the reporting resource is PUCCH. The physical uplink control channel (PUCCH) used to send periodic CSI is also configured by RRC signaling.

[0150] If the reporting resource type bound to the CSI reporting configuration is semi-persistent, and the reporting resource is PUCCH or PUSCH, then after the terminal receives the media access control control element (MAC CE) used to trigger semi-persistent CSI reporting, it periodically reports CSI. The PUCCH used to send semi-persistent CSI is configured by RRC signaling. Alternatively, after the terminal receives the DCI used to trigger semi-persistent CSI reporting, it periodically reports CSI. The physical uplink shared channel (PUSCH) used to send semi-persistent CSI is also triggered by the DCI.

[0151] If the type of the reporting resource bound to the CSI reporting configuration is non-periodic and the reporting resource is PUSCH, then after the terminal receives the DCI used to trigger non-periodic CSI reporting, it will only report CSI once, and the PUSCH used to send non-periodic CSI will also be triggered by the DCI.

[0152] 5. CSI resource configuration and CSI reporting configuration

[0153] Access network devices can configure one or more CSI reporting configurations and one or more CSI resource configurations for a single terminal simultaneously. For example, the access network device can configure one or more CSI reporting configurations for a terminal via higher-layer signaling CSI-ReportConfig, and configure one or more CSI resource configurations for the terminal via higher-layer signaling CSI-ResourceConfig. For instance, one CSI-ReportConfig signaling message can configure one CSI reporting configuration, and multiple CSI-ReportConfig signaling messages can configure multiple CSI reporting configurations. Similarly, one CSI-ResourceConfig signaling message can configure one CSI resource configuration, and multiple CSI-ResourceConfig signaling messages can configure multiple CSI resource configurations.

[0154] Each CSI reporting configuration is bound to one CSI resource configuration. One CSI resource configuration includes one or more CSI-RS resource sets, and one CSI-RS resource set includes one or more NZP CSI-RS resources. For example, one CSI resource configuration may contain one or at most 16 CSI-RS resource sets, and one CSI-RS resource set may contain one or at most 64 NZP CSI-RS resources.

[0155] For example, from the perspective of CSI-RS resources, the combination relationship between CSI resource configuration and CSI reporting configuration is as follows:

[0156] Periodic CSI-RS resources can be used for periodic, semi-static, and aperiodic CSI reporting.

[0157] Semi-persistent CSI-RS resources can be used for non-periodic and semi-persistent CSI reporting.

[0158] Non-periodic CSI-RS resources can only be used for non-periodic CSI reporting.

[0159] Correspondingly, from the perspective of CSI reporting, the above combination relationship can also be described as:

[0160] Non-periodic CSI reporting can be based on periodic CSI-RS resources, semi-persistent CSI-RS resources, and non-periodic CSI-RS resources.

[0161] Semi-persistent CSI reporting can be based on periodic CSI-RS resources or semi-persistent CSI-RS resources.

[0162] Periodic CSI reporting can only be based on periodic CSI-RS resources.

[0163] 6. CSI Trigger Status List

[0164] Access network equipment can configure one or two CSI trigger state lists for a terminal or a UE, specifically including an aperiodic trigger state list (CSI-AperiodicTriggerStateList) and a semi-persistent trigger state list (CSI-SemiPersistentOnPUSCH-TriggerStateList).

[0165] The list of aperiodic trigger states includes one or more aperiodic trigger states (CSI-AperiodicTriggerState). Each aperiodic trigger state includes one or more CSI associated reporting configurations (CSI-AssociatedReportConfigInfo). Each CSI associated reporting configuration includes a CSI reporting configuration ID (CSI-ReportConfigId) and a CSI-RS resource set ID. The CSI-RS resource set ID indicates a CSI-RS resource set in the CSI reporting configuration corresponding to the CSI reporting configuration ID.

[0166] As shown above, since one CSI reporting configuration is bound to one CSI resource configuration, and one CSI resource configuration includes one or more CSI-RS resource sets, one CSI reporting configuration can correspond to one or more CSI-RS resource sets. In the non-periodic triggering status list, each CSI-associated reporting configuration includes a CSI reporting configuration ID and one of the one or more CSI-RS resource sets corresponding to that CSI reporting configuration. Furthermore, one non-periodic triggering status can be associated with multiple CSI-associated reporting configurations, meaning that a single non-periodic CSI reporting trigger can simultaneously trigger multiple CSI reports, and the types of the CSI-RS resources corresponding to these multiple CSI-associated reporting configurations can be the same or different.

[0167] Alternatively, it can be understood that a non-periodic triggering state includes one or more CSI-related reporting configurations, each CSI-related reporting configuration includes a CSI-RS resource set ID, that is, each CSI-related reporting configuration corresponds to a CSI-RS resource set, and thus a non-periodic triggering state corresponds to one or more CSI-RS resource sets, wherein the types of one or more CSI-RS resource sets can be the same or different.

[0168] For example, an aperiodic trigger state includes two CSI-related reporting configurations. One CSI-related reporting configuration includes a periodic CSI-RS resource set ID, and the other CSI-related reporting configuration includes an aperiodic CSI-RS resource set ID. That is, one CSI-related reporting configuration corresponds to a periodic CSI-RS resource set, and the other CSI-related reporting configuration corresponds to an aperiodic CSI-RS resource set. Therefore, this aperiodic trigger state corresponds to one periodic CSI-RS resource set and one aperiodic CSI-RS resource set. See Figure 5 below for details.

[0169] The semi-persistent trigger state list also includes one or more semi-persistent trigger states (CSI-SemiPersistentOnPUSCH-TriggerState), and each semi-persistent trigger state includes only one CSI reporting configuration ID (CSI-ReportConfigId).

[0170] 7. Non-periodic CSI reporting trigger

[0171] The access network device sends a DCI to the terminal. This DCI includes a CSI request field, where the CSI request field can include N bits, for example, N can be 1 to 6. The CSI request field can indicate up to 2 bits. NA non-periodic triggering state. The terminal can determine a non-periodic triggering state and one or more CSI-associated reporting configurations corresponding to that non-periodic triggering state based on the CSI request domain and the non-periodic triggering state list, thereby determining the CSI reporting configurations and corresponding CSI-RS resource sets corresponding to the one or more CSI-associated reporting configurations triggered this time.

[0172] In addition, the DCI will also indicate a time offset value K2, which represents the offset between the time slot where the DCI is located and the time slot where the PUSCH scheduled by the DCI is located, in units of time slots. The PUSCH is used to carry the information of the non-periodic CSI report triggered this time.

[0173] For example, if the non-periodic triggering state includes a CSI associated reporting configuration, and the CSI-RS resource set corresponding to the CSI-RS resource set ID included in the CSI associated reporting configuration is a periodic CSI-RS resource set or a semi-persistent CSI-RS resource set, since the CSI-RS resources in these two types of CSI-RS resource sets appear periodically, and the access network device will ensure that there is at least one CSI-RS sent based on the CSI-RS resource set between the DCI and the PUSCH scheduled by the DCI, then the terminal can determine the CSI based on the received CSI-RS and report the CSI.

[0174] For example, if the aperiodic triggering state includes a CSI associated reporting configuration, and the CSI-RS resource set corresponding to the CSI-RS resource set ID included in the CSI associated reporting configuration is an aperiodic CSI-RS resource set, then the CSI resource set configuration where the aperiodic CSI-RS resource set is located will also have an aperiodic triggering offset value. This aperiodic triggering offset value represents the offset from the time slot where the DCI is located to the time slot where the aperiodic CSI-RS resource set is located, with the unit being the time slot. The time-frequency domain position of the CSI-RS resource set in the time slot is configured in the corresponding CSI-RS resource set configuration. The terminal can receive the corresponding CSI-RS based on the aperiodic CSI-RS resource set in the time slot, determine the CSI based on the received CSI-RS, and report the CSI.

[0175] For example, if the aperiodic triggering state includes a CSI associated reporting configuration, and the CSI-RS resource set corresponding to the CSI-RS resource set ID included in the CSI associated reporting configuration is an aperiodic CSI-RS resource set, then the CSI resource set configuration where the aperiodic CSI-RS resource set is located will also have an aperiodic trigger offset value. This aperiodic trigger offset value represents the offset from the time slot where the DCI is located to the first time slot of the multiple time slots where the aperiodic CSI-RS resource set is located, with the unit being time slots. The time-frequency domain position of the CSI-RS resource set in each of the multiple time slots is configured in the corresponding CSI resource set configuration. The terminal can receive the corresponding CSI-RS based on the aperiodic CSI-RS resource set in the multiple time slots, determine the CSI based on the received CSI-RS, and report the CSI.

[0176] For example, this aperiodic CSI-RS resource set includes two aperiodic CSI-RS resources. The first CSI-RS resource occupies 2 symbols (e.g., the 1st and 2nd symbols within a time slot), and the second CSI-RS resource occupies 4 symbols (e.g., the 7th to 10th symbols within a time slot). If the DCI occupies time slot n, and the aperiodic trigger offset value is 4, then starting from time slot n+4, each of the X time slots contains CSI-RS resources corresponding to these two resources. The X time slots can be consecutive or interspersed. The values ​​of X and the intervals are configured in the CSI resource set configuration, predefined by the protocol, or determined according to preset rules. Here, X is a positive integer, and n is a positive integer. After the aforementioned X time slots, the access network device no longer sends CSI-RS based on the aforementioned aperiodic CSI-RS resource set. This aperiodic CSI-RS resource set does not need to be deactivated and does not have a periodicity.

[0177] Taking Figure 5 as an example, the access network device sends a DCI to the terminal. This DCI is used to trigger aperiodic CSI reporting. The aperiodic triggering state indicated by the DCI includes two CSI-associated reporting configurations. One CSI-associated reporting configuration includes a periodic CSI-RS resource set corresponding to a CSI-RS resource set ID, and the other CSI-associated reporting configuration includes an aperiodic CSI-RS resource set corresponding to a CSI-RS resource set ID. The aperiodic triggering offset value is 2. The terminal receives CSI-RS on the periodic CSI-RS resource set and determines one CSI based on these two CSI-associated reporting configurations, and receives CSI-RS on the aperiodic CSI-RS resource set and determines another CSI.

[0178] Furthermore, the DCI also indicates that K2 is 5, meaning that the time slot of the PUSCH used to carry the above two CSIs is offset by 5 from the time slot of the DCI. The terminal reports the two CSIs determined by measurement to the access network equipment through this PUSCH.

[0179] For a given time slot, if it includes both SBFD symbols and non-SBFD symbols (e.g., DL symbols), then the downlink available frequency domain ranges corresponding to SBFD symbols and DL symbols are different. For periodically occurring CSI-RS, if CSI-RS appears in SBFD symbols in some periods and in DL symbols in others, then the available frequency domain ranges corresponding to CSI-RS carried by different types of symbols are also different.

[0180] Currently, regarding CSI reporting configurations that associate periodic CSI-RS resources and semi-persistent CSI-RS resources, the following conclusions exist:

[0181] The valid symbol type of the periodic or semi-persistent CSI-RS resource used to obtain CSI is explicitly configured in the CSI reporting configuration. In other words, the terminal will only determine the CSI based on the CSI-RS received at the specified transmission time if the CSI-RS resource is a periodic or semi-persistent resource. The valid symbol type refers to the type of symbol used to determine or obtain the CSI. For example, the valid symbol type can indicate an SBFD symbol or a non-SBFD symbol.

[0182] In other words, for CSI reporting associated with periodic or semi-persistent CSI-RS resources, the terminal only needs to measure and report CSI based on CSI-RS on symbols of the same type (e.g., SBFD symbols or non-SBFD symbols) on that periodic or semi-persistent CSI-RS resource. Here, "symbols of the same type" refers to symbols of the valid symbol type, which is explicitly configured in the CSI reporting configuration. For CSI-RS carried by invalid symbols on that periodic or semi-persistent CSI-RS resource, the terminal can ignore them. Invalid symbols can be understood as symbols other than those of the valid symbol type, or downlink symbols other than those of the valid symbol type.

[0183] Furthermore, for communication scenarios involving SBFD symbols in time slots, the following issues require further discussion:

[0184] (1) For CSI reporting configurations associated with non-periodic CSI-RS resources, on which type of symbolic CSI-RS does the terminal perform measurement and CSI determination? In other words, for CSI reporting configurations associated with non-periodic CSI-RS, how can the terminal and access network equipment achieve a consistent understanding of the CSI-RS on which the CSI determination is based?

[0185] (2) For CSI reporting configurations associated with periodic CSI-RS resources or semi-persistent CSI-RS resources, when there are SBFD symbols and non-SBFD symbols in the time slot, the terminal performs measurement and CSI determination based on which type of symbol's CSI-RS.

[0186] The communication method and apparatus will be further described below with reference to the accompanying drawings. It is understood that in the embodiments shown in Figures 6, 8, and 9, the explanation uses the access network device and the terminal as examples of the execution subjects in the interactive illustration. However, this application does not limit the execution subjects in the interactive illustration. For example, the method executed by the access network device in this application can also be implemented by a module (e.g., circuit, chip, or chip system) in the access network device, or a logical node, logical module, or software that can implement all or part of the functions of the access network device; the method executed by the terminal in this application can also be implemented by a communication / processing module in the terminal, or a circuit or chip (such as a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip, or a GPU) in the terminal responsible for communication / processing functions.

[0187] This application provides a communication method, as shown in Figure 6, which includes:

[0188] Step 600: The access network device sends the first information to the terminal, and the terminal receives the first information from the access network device accordingly.

[0189] The first information is used to trigger aperiodic CSI reporting. For example, the first information indicates an aperiodic triggering state, which corresponds to a first set of reference signal resources. The first information may include a first field indicating an aperiodic triggering state. For example, the first information is DCI, and the first field is a CSI request field.

[0190] For example, the aperiodic triggering state can be one of the aperiodic triggering state lists, and the aperiodic triggering state is used to trigger aperiodic CSI reporting. For instance, when multiple bits of the CSI request field are all set to 0, it indicates that the DCI has not triggered aperiodic CSI reporting; when at least one bit of multiple bits of the CSI request field is 1, it indicates that the DCI has triggered aperiodic CSI reporting, and the 0 / 1 value combination of the multiple bits corresponds to one of the aperiodic triggering states in the aperiodic triggering state list.

[0191] The aperiodic triggering state includes one or more CSI-associated reporting configurations. Each CSI-associated reporting configuration includes a CSI reporting configuration ID and a CSI-RS resource set ID. That is, each CSI-associated reporting configuration corresponds to one CSI-RS resource set, and thus one aperiodic triggering state corresponds to one or more CSI-RS resource sets. The first reference signal resource set is one of the one or more CSI-RS resource sets corresponding to the aperiodic triggering state. It is understood that the reference signal set in this application is only illustrated using the CSI-RS resource set as an example.

[0192] For example, the first reference signal resource set may include one or more reference signal resources, and all reference signal resources in the first reference signal resource set are of the same type. For instance, if the first reference signal resource set includes one or more aperiodic reference signal resources, then the first reference signal resource set is an aperiodic reference signal resource set. As another example, if the first reference signal resource set includes one or more periodic reference signal resources, then the first reference signal resource set is a periodic reference signal resource set. As yet another example, if the first reference signal resource set includes one or more semi-persistent reference signal resources, then the first reference signal resource set is a semi-persistent reference signal resource set.

[0193] Furthermore, the first information is also used to schedule an uplink resource, such as a PUSCH resource, which is used to carry the triggered aperiodic CSI. For example, the first information also includes a time offset value, which can be represented by K2. This time offset value indicates the offset between the time slot where the first information is located and the time slot where the PUSCH resource scheduled by the first information is located. The unit of the time offset is a time slot. The PUSCH resource is used to carry the information reported by the triggered aperiodic CSI. For example, in step 620, the terminal sends the first channel state information on the PUSCH resource.

[0194] A time slot may be a hybrid time slot, an SBFD time slot, or a non-SBFD time slot. A first set of reference signal resources may include one or more reference signal resources. The symbols occupied by these one or more reference signal resources belong to the same time slot; in other words, the one or more reference signal resources occupy the same time slot or the same time slot. That is, one or more reference signal resources belonging to the same set of reference signal resources are distributed within a single time slot.

[0195] Therefore, the relationship between one or more reference signal resources included in the first reference signal resource set and the multiple symbols included in the time slot occupied by the first reference signal resource set can exist in the following ways. Figures 7A to 7F below are merely examples and are not intended to limit this application. In Figures 7A to 7F, it is assumed that a time slot includes 14 symbols, where white symbols represent non-SBFD symbols and diagonal symbols represent SBFD symbols.

[0196] Case (1) The time slot occupied by the first reference signal resource set is a mixed time slot, and all symbols occupied by the first reference signal resource set are non-SBFD symbols. For example, as shown in Figure 7A, the time slot occupied by the first reference signal resource set is a mixed time slot, that is, the time slot includes two types of symbols, namely SBFD symbols and non-SBFD symbols. The first reference signal resource set includes two reference signal resources, namely CSI-RS resource 1 and CSI-RS resource 2. Among them, the symbols occupied by CSI-RS resource 1 are all non-SBFD symbols. The symbols occupied by CSI-RS resource 2 are all non-SBFD symbols. That is, one or more reference signal resources included in the first reference signal resource set only occupy the non-SBFD symbols in the time slot and do not occupy the SBFD symbols in the time slot.

[0197] Case (2) The time slot occupied by the first reference signal resource set is a mixed time slot, and all symbols occupied by the first reference signal resource set are SBFD symbols. For example, as shown in Figure 7B, the time slot occupied by the first reference signal resource set is a mixed time slot, that is, the time slot includes two types of symbols, namely SBFD symbols and non-SBFD symbols. The first reference signal resource set includes two reference signal resources, namely CSI-RS resource 1 and CSI-RS resource 2. Among them, the symbols occupied by CSI-RS resource 1 are all SBFD symbols. The symbols occupied by CSI-RS resource 2 are all SBFD symbols. That is, one or more reference signal resources included in the first reference signal resource set only occupy SBFD symbols in the time slot and do not occupy non-SBFD symbols in the time slot.

[0198] Case (3) The time slot occupied by the first reference signal resource set is a mixed time slot. The symbols occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols. In other words, at least two symbols occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols.

[0199] Specifically, for any one of the reference signal resources in the first set of reference signal resources, the reference signal resource may occupy two types of symbols or only one type of symbol.

[0200] As shown in Figure 7C, the time slots occupied by the first reference signal resource set are mixed time slots, meaning these time slots include two types of symbols: SBFD symbols and non-SBFD symbols. The first reference signal resource set includes three reference signal resources: CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3. CSI-RS resource 1 occupies only non-SBFD symbols. CSI-RS resource 2 occupies only SBFD symbols. CSI-RS resource 3 occupies both SBFD and non-SBFD symbols. In this case, CSI-RS resource 3 occupies both types of symbols. That is, a portion of the reference signal resources in the first reference signal resource set occupy only non-SBFD symbols in the time slot, a portion occupy only SBFD symbols in the time slot, and a portion occupy both non-SBFD and SBFD symbols in the time slot.

[0201] As shown in Figure 7D, the time slots occupied by the first reference signal resource set are hybrid time slots, meaning these time slots include two types of symbols: SBFD symbols and non-SBFD symbols. The first reference signal resource set includes three reference signal resources: CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3. CSI-RS resource 1 occupies only non-SBFD symbols. CSI-RS resource 2 occupies only SBFD symbols, and CSI-RS resource 3 occupies only non-SBFD symbols. In other words, a portion of the reference signal resources in the first reference signal resource set only occupy non-SBFD symbols within the time slots, while another portion only occupies SBFD symbols within the time slots.

[0202] Case (4) The time slots occupied by the first reference signal resource set are non-SBFD time slots, and all symbols occupied by the first reference signal resource set are non-SBFD symbols. For example, as shown in Figure 7E, the time slots occupied by the first reference signal resource set are all non-SBFD time slots, that is, the time slots only include non-SBFD symbols and do not include SBFD symbols. The first reference signal resource set includes three reference signal resources, namely CSI-RS resource 1, CSI-RS resource 2 and CSI-RS resource 3. Among them, the symbols occupied by CSI-RS resource 1 are all non-SBFD symbols, the symbols occupied by CSI-RS resource 2 are all non-SBFD symbols, and the symbols occupied by CSI-RS resource 3 are all non-SBFD symbols.

[0203] Case (5) The time slot occupied by the first reference signal resource set is an SBFD time slot, and all symbols occupied by the first reference signal resource set are SBFD symbols. For example, as shown in Figure 7F, the time slot occupied by the first reference signal resource set is an SBFD time slot, that is, this time slot only includes SBFD symbols and does not include non-SBFD symbols. The first reference signal resource set includes 3 reference signal resources, namely CSI-RS resource 1, CSI-RS resource 2 and CSI-RS resource 3. Among them, all symbols occupied by CSI-RS resource 1 are SBFD symbols, all symbols occupied by CSI-RS resource 2 are SBFD symbols, and all symbols occupied by CSI-RS resource 3 are SBFD symbols.

[0204] Furthermore, if the first reference signal resource set is an aperiodic reference signal resource set, then the CSI resource set configuration containing the first reference signal resource set will also include an aperiodic trigger offset value. This aperiodic trigger offset value represents the offset between the time slot where the first information is located and the first time slot among the multiple time slots containing the first reference signal resource set. Here, the multiple time slots may be of the same type or different types. For example, the multiple time slots may include at least one of SBFD time slots, non-SBFD time slots, and mixed time slots. Therefore, among the aforementioned multiple time slots, one or more combinations of situations (1) to (5) may occur.

[0205] It is understandable that before sending the first information, the access network device can send TDD configuration parameters, SBFD configuration parameters, and measurement configuration parameters to the terminal. The measurement configuration parameters include CSI reporting configuration parameters, CSI-RS resource configuration parameters, and aperiodic trigger status lists, etc. For details, please refer to the relevant content mentioned above, which will not be repeated here. These parameters can be sent in the same RRC signaling message or in different RRC signaling messages; this application does not impose any limitations on this.

[0206] For example, the terminal can determine an aperiodic triggering state from the aperiodic triggering state list based on the first information, and one or more CSI-associated reporting configurations corresponding to that aperiodic triggering state. It can then determine the CSI reporting configuration and CSI-RS resource set corresponding to each of the one or more CSI-associated reporting configurations based on the CSI reporting configuration parameters, CSI resource configuration parameters, and the one or more CSI-associated reporting configurations. The first reference signal resource set is one of the CSI-RS resource sets determined by the terminal. The terminal can also determine the time slot type occupied by the first reference signal resource set and the symbol type occupied by each reference signal resource in the first reference signal resource set based on the TDD configuration parameters and SBFD configuration parameters. Furthermore, the terminal can receive reference signals on the first reference signal resource set, as described in step 610 below.

[0207] Step 610: The access network device transmits a reference signal on the first reference signal resource set. Correspondingly, the terminal receives the reference signal on the first reference signal resource set.

[0208] Step 620: The terminal sends the first channel status information based on the first information. Correspondingly, the access network device receives the first channel status information based on the first information.

[0209] The first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol, and the reference signal resource occupying the SBFD symbol belongs to the first reference signal resource set; or the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol, and the reference signal resource occupying the non-SBFD symbol belongs to the first reference signal resource set.

[0210] For example, reference signal resources occupying non-SBFD symbols all occupy non-SBFD symbols, while reference signal resources occupying SBFD symbols all occupy SBFD symbols. In other words, reference signal resources occupying both types of symbols are not used to determine CSI. Alternatively, it can be understood that the terminal may not measure, or in other words, the terminal may disregard, or not receive, the reference signal carried by reference signal resources occupying both types of symbols.

[0211] For example, as shown in Figure 7C above, the first set of reference signal resources includes three reference signal resources: CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3. CSI-RS resource 1 is a reference signal resource that occupies non-SBFD symbols, CSI-RS resource 2 is a reference signal resource that occupies SBFD symbols, and CSI-RS resource 3 is a reference signal resource that occupies both types of symbols.

[0212] For example, as shown in Figure 7D above, the first set of reference signal resources includes three reference signal resources, namely CSI-RS resource 1, CSI-RS resource 2 and CSI-RS resource 3. CSI-RS resource 1 and CSI-RS resource 3 are reference signal resources that occupy non-SBFD symbols, and CSI-RS resource 2 is a reference signal resource that occupies SBFD symbols.

[0213] The first channel state information (CSI) is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol. This can also be understood as the first channel state information being determined based on the reference signal carried by the SBFD symbol, where the symbols occupied by the reference signal resource carrying the reference signal are all SBFD symbols, and the reference signal resource belongs to the first reference signal resource. Alternatively, it can be understood as the first channel state information being determined based on the reference signal received on the SBFD symbol, where the symbols occupied by the reference signal resource carrying the reference signal are all SBFD symbols, and the reference signal resource belongs to the first reference signal resource. Another possible interpretation is that the terminal measures the reference signal carried by the reference signal resource occupying the SBFD symbol and reports the CSI based on this measurement.

[0214] Furthermore, the word "determine" in "the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol" can also be replaced with "acquire" or "determine", etc., and this application does not limit it in this way.

[0215] Similarly, the first channel state information (CSI) is determined based on the reference signal received on the reference signal resource occupying non-SBFD symbols. This can also be understood as the first CSI being determined based on the reference signal carried by the non-SBFD symbols, where the symbols occupied by the reference signal resource carrying the reference signal are all non-SBFD symbols, and the reference signal resource belongs to the first reference signal resource. Alternatively, it can be understood as the first channel state information being determined based on the reference signal received on the non-SBFD symbols, where the symbols occupied by the reference signal resource carrying the reference signal are all non-SBFD symbols, and the reference signal resource belongs to the first reference signal resource. Or, it can be understood as the terminal measuring the reference signal carried by the reference signal resource occupying the non-SBFD symbols and reporting the CSI based on this measurement.

[0216] The terminal may use, but is not limited to, the following possible methods to determine which reference signals the first channel state information is based on, wherein the type of symbol used to determine the channel state information and the type of valid symbol can be interchanged.

[0217] Method 1: When the time unit occupied by the first reference signal resource set includes both SBFD and non-SBFD symbols, the terminal can determine the type of symbol used to determine the channel state information based on the first indication information. The channel state information reporting configuration corresponding to the first reference signal resource set includes the first indication information, which indicates the type of symbol used to determine the channel state information. The channel state information reporting configuration corresponding to the first reference signal resource set can be pre-configured to the terminal via RRC signaling.

[0218] In other words, when the time unit occupied by the first reference signal resource set includes both SBFD and non-SBFD symbols, the terminal determines the first channel state information based on the reference signal received on the symbol corresponding to the valid symbol type. The valid symbol type is displayed in the channel state information reporting configuration corresponding to the first reference signal resource set.

[0219] The time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols. This can mean that at least two symbols occupied by the first reference signal resource set include both SBFD and non-SBFD symbols. For example, it can be the case described above (3). Alternatively, it can be understood that the first reference signal resource set includes at least a first reference signal resource and a second reference signal resource, wherein the symbols occupied by the first reference signal resource are all SBFD symbols, and the symbols occupied by the second reference signal resource are all non-SBFD symbols.

[0220] Alternatively, the time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols, which can mean that the time slots occupied by the first reference signal resource set include both SBFD symbols and non-SBFD symbols. For example, this can specifically be case (1), case (2), and case (3) mentioned above.

[0221] For example, if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0222] Furthermore, in one possible design, the first indication information is effective only when the time unit occupied by the first reference signal resource set includes both SBFD and non-SBFD symbols. That is, when the time unit occupied by the first reference signal resource set includes only SBFD symbols or only non-SBFD symbols, the first indication information is ineffective, or in other words, the terminal does not need to consider the first indication information. When the time unit occupied by the first reference signal resource set includes only SBFD symbols or only non-SBFD symbols, the reference signals on all reference signal resources of that first reference signal resource set can be used to determine the CSI.

[0223] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set, and the first indication information is effective only when the time unit occupied by the first reference signal resource set includes both SBFD and non-SBFD symbols. That is, when the time unit occupied by the first reference signal resource set includes only SBFD symbols or only non-SBFD symbols and the first reference signal resource set is an aperiodic reference signal resource set, the first indication information is ineffective, or in other words, the terminal does not need to consider the first indication information. When the time unit occupied by the first reference signal resource set includes only SBFD symbols or only non-SBFD symbols and the first reference signal resource set is an aperiodic reference signal resource set, the reference signals on all reference signal resources of the first reference signal resource set can be used to determine the CSI.

[0224] For example, referring to Figure 7C above, if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on CSI-RS resource 2; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on CSI-RS resource 1.

[0225] For example, referring to Figure 7D above, if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on CSI-RS resource 2; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signals received on CSI-RS resource 1 and CSI-RS resource 3.

[0226] By adopting method 1 above, it is ensured that the terminal and the access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined, and the access network equipment can flexibly determine the valid symbol type according to the situation.

[0227] Method 2: The protocol specifies that the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol, or the protocol specifies that the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0228] Alternatively, the protocol stipulates that if the first reference signal resource set is an aperiodic reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol, or the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0229] Alternatively, the protocol stipulates that if the time unit occupied by the first reference signal resource set includes SBFD symbols and non-SBFD symbols, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbols, or the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbols.

[0230] For example, the terminal determines the first channel state information based on the reference signal received on the symbol corresponding to the valid symbol type. The valid symbol type is predefined by the protocol.

[0231] By adopting method 2 above, it is ensured that the terminal and access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined, and signaling overhead can be saved.

[0232] Method 3: When the time unit occupied by the first reference signal resource set includes both SBFD and non-SBFD symbols, and the first reference signal resource set is an aperiodic reference signal resource set, if the aperiodic triggering state also corresponds to the second reference signal resource set, and the second reference signal resource set is a periodic or semi-persistent reference signal resource set, the terminal can determine the type of symbol used to determine the channel state information based on the second indication information. The type of symbol used to determine the channel state information can also be called the valid symbol type. The channel state information reporting configuration corresponding to the second reference signal resource set includes the second indication information, which indicates the type of symbol used to determine the channel state information. The channel state information reporting configuration corresponding to the second reference signal resource set can be pre-configured to the terminal via RRC signaling.

[0233] In other words, when the terminal determines that the time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols, and the first reference signal resource set is an aperiodic reference signal resource set, and the aperiodic trigger state also corresponds to a periodic reference signal resource set or a semi-persistent reference signal resource set (i.e., the second reference signal set), the terminal determines the first channel state information based on the reference signals received on the symbols corresponding to the valid symbol type. The channel state information reporting configuration corresponding to the second reference signal resource set with the valid symbol type is displayed in the configuration.

[0234] The time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols, which can be referred to in the relevant content of Method 1 above, and will not be repeated here.

[0235] For example, if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0236] As a possible embodiment of method 3, the aperiodic triggering state also corresponds one-to-one with M reference signal resource sets, where the M reference signal resource sets are either periodic or semi-persistent reference signal resource sets, and M is an integer greater than or equal to 2. Each of the M reference signal resource sets corresponds one-to-one with M channel state information reporting configurations, and the types of symbols indicated by the M channel state information reporting configurations for determining channel state information are all the same. The M channel state information reporting configurations can be pre-configured to the terminal via RRC signaling. When the time unit occupied by the first reference signal resource set includes SBFD symbols and non-SBFD symbols, and the first reference signal resource set is an aperiodic reference signal resource set, the terminal can determine which reference signals to use to determine or determine the first channel state information based on the types of symbols used to determine the channel state information.

[0237] Each of the M channel state information reporting configurations can indicate the type of symbol used to determine the channel state information, and the indicated types are consistent. For example, all M channel state information reporting configurations indicate that the type of symbol used to determine the channel state information is SBFD symbol, or all M channel state information reporting configurations indicate that the type of symbol used to determine the channel state information is non-SBFD symbol.

[0238] For example, if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0239] By adopting method 3 above, it is ensured that the terminal and access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined, and signaling overhead can be saved.

[0240] Method 4: The terminal can determine which reference signals to use to determine or ascertain the first channel state information based on the number of non-SBFD symbols occupied by the first reference signal resource set and the number of non-SBFD symbols occupied by the first reference signal resource set. Alternatively, the terminal can determine which reference signals to use to determine or ascertain the first channel state information based on the number of reference signal resources occupying non-SBFD symbols and the number of reference signal resources occupying SBFD symbols.

[0241] In one possible implementation, if the number of non-SBFD symbols occupied by the first reference signal resource set is greater than or equal to the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resources occupying non-SBFD symbols. If the number of non-SBFD symbols occupied by the first reference signal resource set is less than the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resources occupying SBFD symbols. Here, "greater than or equal to" can be replaced with "greater than," and "less than" can be replaced with "less than or equal to."

[0242] For example, in conjunction with Figure 7C above, the number of non-SBFD symbols occupied by the first reference signal resource set is equal to the number of SBFD symbols occupied by the first reference signal resource set, that is, the number of non-SBFD symbols occupied by CSI-RS resource 1 (4) is equal to the number of SBFD symbols occupied by CSI-RS resource 2 (4), and the first channel state information is determined based on the reference signal received on CSI-RS resource 1.

[0243] For example, in conjunction with Figure 7D above, the number of non-SBFD symbols occupied by the first reference signal resource set is greater than the number of SBFD symbols occupied by the first reference signal resource set, that is, the number of non-SBFD symbols occupied by CSI-RS resource 1 (6) is greater than the number of SBFD symbols occupied by CSI-RS resource 2 (4). The first channel state information is determined based on the reference signals received on CSI-RS resource 1 and CSI-RS resource 3.

[0244] In another possible implementation, if the number of reference signal resources occupying non-SBFD symbols is greater than or equal to the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols; if the number of reference signal resources occupying non-SBFD symbols is less than the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols. Here, "greater than or equal to" can be replaced with "greater than," and "less than" can be replaced with "less than or equal to."

[0245] For example, referring to Figure 7C above, the number of reference signal resources (CSI-RS resource 1) occupying non-SBFD symbols is equal to the number of reference signal resources (CSI-RS resource 2) occupying SBFD symbols, and the first channel state information is determined based on the reference signal received on CSI-RS resource 1.

[0246] For example, referring to Figure 7D above, the number of reference signal resources (CSI-RS resource 1 and CSI-RS resource 3) occupying non-SBFD symbols is greater than the number of reference signal resources (CSI-RS resource 2) occupying SBFD symbols, and the first channel state information is determined based on the reference signals received on CSI-RS resource 1 and CSI-RS resource 3.

[0247] By adopting method 4 above, it is ensured that the terminal and access network equipment have a consistent understanding of the CSI-RS (valid symbol type) on which the CSI is determined, and signaling overhead can be saved.

[0248] Method 5: If all symbols occupied by the first reference signal resource set are SBFD symbols (or the time slots occupied by the first reference signal resource set are SBFD time slots), the terminal can determine the first channel state information based on the reference signals received on the reference signal resources occupying SBFD symbols. Alternatively, if all symbols occupied by the first reference signal resource set are non-SBFD symbols (or the time slots occupied by the first reference signal resource set are non-SBFD time slots), the terminal can determine the first channel state information based on the reference signals received on the reference signal resources occupying non-SBFD symbols.

[0249] It is understandable that if the first reference signal resource set occupies a time slot that is an SBFD time slot, then all the symbols occupied by the first reference signal resource set must be SBFD symbols. If all the symbols occupied by the first reference signal resource set are SBFD symbols, then the time slot occupied by the first reference signal resource set can be either an SBFD time slot or a mixed time slot. Similarly, if the first reference signal resource set occupies a time slot that is not an SBFD time slot, then all the symbols occupied by the first reference signal resource set must be non-SBFD symbols. If all the symbols occupied by the first reference signal resource set are non-SBFD symbols, then the time slot occupied by the first reference signal resource set can be either a non-SBFD time slot or a mixed time slot.

[0250] For example, referring to Figure 7F above, the time slots occupied by the first reference signal resource set are all SBFD time slots. The first reference signal resource set includes three reference signal resources, namely CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3. The symbols occupied by these three reference signal resources are all SBFD symbols. The first channel state information is determined based on the reference signals received on CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3.

[0251] For example, referring to Figure 7B above, the time slot occupied by the first reference signal resource set is a mixed time slot. The first reference signal resource set includes two reference signal resources, namely CSI-RS resource 1 and CSI-RS resource 2, and the symbols occupied by the two reference signal resources are both SBFD symbols. The first channel state information is determined based on the reference signals received on CSI-RS resource 1 and CSI-RS resource 2.

[0252] For example, referring to Figure 7E above, the time slots occupied by the first reference signal resource set are non-SBFD time slots. The first reference signal resource set includes three reference signal resources: CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3. The symbols occupied by these three reference signal resources are all non-SBFD symbols. The first channel state information is determined based on the reference signals received on CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3.

[0253] For example, referring to Figure 7A above, the time slot occupied by the first reference signal resource set is a mixed time slot. The first reference signal resource set includes two reference signal resources, namely CSI-RS resource 1 and CSI-RS resource 2. CSI-RS resource 1 occupies only SBFD symbols, and CSI-RS resource 2 occupies only SBFD symbols. The first channel state information is determined based on the reference signals received on CSI-RS resource 1 and CSI-RS resource 2.

[0254] By adopting method 5 above, it is ensured that the terminal and the access network equipment have a consistent understanding of the CSI-RS (i.e., the valid symbol type) on which the CSI is determined, and the access network equipment can flexibly determine the valid symbol type according to the situation.

[0255] Using the method provided in the embodiment shown in Figure 6 above, it is possible to improve the relevant design in communication scenarios where SBFD symbols exist in the time slot, thereby increasing uplink coverage while ensuring communication performance, and ensuring that the terminal and access network equipment have a consistent understanding of the CSI-RS (or valid symbol type) on which the CSI is determined.

[0256] This application provides a communication method, as shown in Figure 8, which includes:

[0257] Step 800: The access network device sends the first information to the terminal, and the terminal receives the first information from the access network device accordingly.

[0258] The first information indicates an aperiodic triggering state, which corresponds to the first set of reference signal resources. For details, please refer to the relevant content in step 600 above.

[0259] The time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols. This can mean that at least two symbols occupied by the first reference signal resource set include both SBFD and non-SBFD symbols. For example, it can be the case described above (3). Alternatively, it can be understood that the first reference signal resource set includes at least a first reference signal resource and a second reference signal resource, wherein the symbols occupied by the first reference signal resource are all SBFD symbols, and the symbols occupied by the second reference signal resource are all non-SBFD symbols.

[0260] Alternatively, the time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols, which can mean that the time slots occupied by the first reference signal resource set include both SBFD symbols and non-SBFD symbols. For example, this can specifically be case (1), case (2), and case (3) mentioned above.

[0261] Step 810: The access network device transmits a reference signal on the first reference signal resource set.

[0262] In one possible implementation, if the time unit occupied by the first reference signal resource set includes SBFD symbols and non-SBFD symbols, the terminal may not receive or detect reference signals on the first reference signal resource set.

[0263] Step 820A: The terminal sends the first channel state information to the access network device, and the access network device receives the first channel state information from the terminal.

[0264] The first channel state information is the channel state information determined previously based on the first reference signal resource set. This previously determined channel state information based on the first reference signal resource set can be understood as the channel state information most recently determined by the terminal based on the first reference signal resource set before receiving the first information. In other words, the terminal does not need to update the first channel state information based on the reference signals in the current first reference signal resource set.

[0265] Step 820B: The terminal determines not to send the channel state information determined based on the first reference signal resource set.

[0266] For example, the terminal's decision not to send channel state information determined based on the first set of reference signal resources can also be understood as the terminal ignoring the first information, or the terminal not expecting the first information.

[0267] Steps 820A and 820B are two parallel implementation methods, and the terminal will only execute one of them.

[0268] Using the method provided in the embodiment shown in Figure 8 above, the relevant design for communication scenarios with SBFD symbols in the time slot can be improved, and the communication performance can be guaranteed while increasing uplink coverage, which can simplify the complexity of the terminal.

[0269] This application also provides a communication method, comprising: an access network device not sending first information, or an access network device avoiding sending first information, wherein the first information indicates an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols. Using the method provided in the above embodiments, it is possible to improve the relevant design in communication scenarios where SBFD symbols exist in time slots, thereby increasing uplink coverage while ensuring communication performance, and also simplifying the complexity of the terminal.

[0270] This application provides a communication method, as shown in Figure 9, the method comprising:

[0271] Step 900: The access network device sends the second information to the terminal, and the terminal receives the second information from the access network device accordingly.

[0272] The second information indicates the aperiodic triggering state, which is associated with the reporting configuration of M channel status information. The reporting configuration of M channel status information corresponds one-to-one with the M reference signal resource sets, where M is an integer greater than or equal to 2.

[0273] There is a one-to-one correspondence between the M reference signal resource sets and the M channel state information reporting configurations. Each of the M channel state information reporting configurations indicates a first type of symbol used to determine the channel state information. The symbols of the first type are either SBFD symbols or non-SBFD symbols. That is, each of the M channel state information reporting configurations can indicate the type of symbol used to determine the channel state information, and the indicated types are consistent.

[0274] For example, the M sets of reference signal resources include one or more of the following: periodic reference signal resource set, semi-persistent reference signal resource set, or aperiodic reference signal resource set.

[0275] For example, the configuration for reporting M channel status information can be pre-configured to the terminal via RRC signaling.

[0276] Step 910: The access network device transmits reference signals on the M sets of reference signal resources. Correspondingly, the terminal receives reference signals on the M sets of reference signal resources.

[0277] Step 920: The terminal sends M channel state information according to the second information. The M channel state information corresponds one-to-one with the M reference signal resource sets. The i-th channel state information is determined based on the reference signal received on the reference signal resource occupying the first type of symbol in the i-th reference signal resource set. i is a positive integer and i≤M.

[0278] For example, the symbols occupied by the reference signal resources that occupy the first type of symbols are all symbols of the first type.

[0279] For example, if the symbol of the first type is a non-SBFD symbol, then all symbols occupying the reference signal resources that are non-SBFD symbols are also non-SBFD symbols. Conversely, if the symbol of the first type is an SBFD symbol, then all symbols occupying the reference signal resources that are SBFD symbols are also SBFD symbols. In other words, reference signal resources occupying both types of symbols are not used to determine CSI. Alternatively, it can be understood that the terminal may not measure the reference signal carried by reference signal resources occupying both types of symbols, or in other words, the terminal may ignore it, or the terminal may not receive the reference signal.

[0280] For example, for any one of the M reference signal resource sets, the terminal can determine the corresponding channel state information based on the reference signal received on the reference signal resource occupying the first type of symbol in that reference signal resource set.

[0281] For example, assuming M = 2, the M reference signal resource sets include one periodic reference signal resource set and one semi-persistent reference signal resource set, denoted as CSI-RS resource set 1 and CSI-RS resource set 2, respectively. The channel state information reporting configuration corresponding to CSI-RS resource set 1 includes a symbol type for determining the channel state information, and the symbol type for determining the channel state information is of type 1. The channel state information reporting configuration corresponding to CSI-RS resource set 2 includes a symbol type for determining the channel state information, and the symbol type for determining the channel state information is of type 1. The channel state information corresponding to CSI-RS resource set 1 is determined based on the reference signal received on the reference signal resources occupying the first type of symbols in CSI-RS resource set 1, and the channel state information corresponding to CSI-RS resource set 2 is determined based on the reference signal received on the reference signal resources occupying the first type of symbols in CSI-RS resource set 2.

[0282] Using the above method, for non-periodic CSI reporting scenarios, multiple CSIs can be determined based on the reference signals carried by symbols of the same valid symbol type. This can improve the design of communication scenarios with SBFD symbols in the time slot and simplify the complexity of the terminal.

[0283] It is understood that, in order to achieve the functions in the above embodiments, each communication device (e.g., a terminal or access network device) includes hardware structures and / or software modules corresponding to perform each function. Those skilled in the art should readily recognize that, based on the units and method steps of the various examples described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0284] Figures 10 and 11 are schematic diagrams of possible communication devices provided in the embodiments of this application. These communication devices can be used to implement the functions of the various communication devices in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments.

[0285] As shown in Figure 10, the communication device 1000 includes a processing unit 1010 and a transceiver unit 1020.

[0286] When the communication device 1000 is used to implement the functions of the terminal in the method embodiment shown in FIG6 above:

[0287] The processing unit 1010 is used to control the operation of the transceiver unit 1020; the transceiver unit 1020 is used to receive first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time units occupied by the first reference signal resource set include sub-band full-duplex SBFD symbols and non-SBFD symbols; receive reference signals on the first reference signal resource set, and send first channel state information according to the first information, the first channel state information being determined based on reference signals received on reference signal resources occupying SBFD symbols, the reference signal resources occupying SBFD symbols belonging to the first reference signal resource set; or the first channel state information being determined based on reference signals received on reference signal resources occupying non-SBFD symbols, the reference signal resources occupying non-SBFD symbols belonging to the first reference signal resource set.

[0288] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0289] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0290] In one possible design, the transceiver unit 1020 is configured to receive a channel state information reporting configuration corresponding to the first reference signal resource set; wherein the channel state information reporting configuration corresponding to the first reference signal resource set includes first indication information, the first indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0291] In one possible design, the first indication information is effective only if the time unit occupied by the first reference signal resource set includes both SBFD symbols and non-SBFD symbols.

[0292] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds to a second reference signal resource set, which is a periodic reference signal resource set or a semi-persistent reference signal resource set; the transceiver unit 1020 is used to receive a channel state information reporting configuration corresponding to the second reference signal resource set; wherein, the channel state information reporting configuration corresponding to the second reference signal resource set includes second indication information, the second indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0293] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds one-to-one with M reference signal resource sets, which are either periodic or semi-persistent reference signal resource sets, where M is an integer greater than or equal to 2; the transceiver unit 1020 is used to receive M channel state information reporting configurations, where each of the M reference signal resource sets corresponds one-to-one with one of the M channel state information reporting configurations, and the types of symbols used to determine the channel state information indicated by the M channel state information reporting configurations are all the same; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0294] In one possible design, if the number of non-SBFD symbols occupied by the first reference signal resource set is greater than or equal to the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying non-SBFD symbols; if the number of non-SBFD symbols occupied by the first reference signal resource set is less than the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying SBFD symbols.

[0295] In one possible design, if the number of reference signal resources occupying non-SBFD symbols is greater than or equal to the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols; if the number of reference signal resources occupying non-SBFD symbols is less than the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

[0296] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0297] When the communication device 1000 is used to implement the function of the access network device in the method embodiment shown in FIG6 above:

[0298] The processing unit 1010 is used to control the operation of the transceiver unit 1020; the transceiver unit 1020 is used to send first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols; transmit reference signals on the first reference signal resource set, and receive first channel state information, the first channel state information being determined based on reference signals received on reference signal resources occupying SBFD symbols, wherein the reference signal resources occupying SBFD symbols belong to the first reference signal resource set; or the first channel state information being determined based on reference signals received on reference signal resources occupying non-SBFD symbols, wherein the reference signal resources occupying non-SBFD symbols belong to the first reference signal resource set.

[0299] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0300] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0301] In one possible design, the transceiver unit 1020 is configured to transmit a channel state information reporting configuration corresponding to the first reference signal resource set; wherein, the channel state information reporting configuration corresponding to the first reference signal resource set includes first indication information, the first indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0302] In one possible design, the first indication information is effective only if the time unit occupied by the first reference signal resource set includes both SBFD symbols and non-SBFD symbols.

[0303] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds to a second reference signal resource set, which is a periodic reference signal resource set or a semi-persistent reference signal resource set; the transceiver unit 1020 is used to send a channel state information reporting configuration corresponding to the second reference signal resource set; wherein, the channel state information reporting configuration corresponding to the second reference signal resource set includes second indication information, the second indication information indicating the type of symbol used to determine the channel state information; if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0304] In one possible design, the first reference signal resource set is an aperiodic reference signal resource set; the aperiodic trigger state also corresponds one-to-one with M reference signal resource sets, which are either periodic or semi-persistent reference signal resource sets, where M is an integer greater than or equal to 2; the transceiver unit 1020 is used to send M channel state information reporting configurations, where each of the M reference signal resource sets corresponds one-to-one with one of the M channel state information reporting configurations, and the types of symbols used to determine the channel state information indicated by the M channel state information reporting configurations are all the same; wherein, if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

[0305] In one possible design, if the number of non-SBFD symbols occupied by the first reference signal resource set is greater than or equal to the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying non-SBFD symbols; if the number of non-SBFD symbols occupied by the first reference signal resource set is less than the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signal received on the reference signal resource occupying SBFD symbols.

[0306] In one possible design, if the number of reference signal resources occupying non-SBFD symbols is greater than or equal to the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols; if the number of reference signal resources occupying non-SBFD symbols is less than the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

[0307] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0308] For some possible designs and beneficial effects of the communication device 1000, please refer to the relevant content in the embodiment shown in Figure 6 above, which will not be repeated here.

[0309] When the communication device 1000 is used to implement the function of the terminal in the method embodiment shown in FIG8 above:

[0310] The processing unit 1010 is used to control the operation of the transceiver unit 1020; the transceiver unit 1020 is used to receive first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time unit occupied by the first reference signal resource set includes SBFD symbols and non-SBFD symbols; the transceiver unit 1020 is used to transmit first channel state information, the first channel state information being the channel state information determined based on the first reference signal resource set in the previous instance; or the processing unit 1010 is used to determine not to transmit the channel state information determined based on the first reference signal resource set.

[0311] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0312] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0313] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0314] When the communication device 1000 is used to implement the function of the access network device in the method embodiment shown in FIG8 above:

[0315] The processing unit 1010 is used to control the operation of the transceiver unit 1020; the transceiver unit 1020 is used to send first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time unit occupied by the first reference signal resource set includes SBFD symbols and non-SBFD symbols; send reference signals on the first reference signal resource set, and receive first channel state information, the first channel state information being determined based on the first reference signal resource set in the previous instance.

[0316] In one possible design, the symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

[0317] In one possible design, the time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

[0318] In one possible design, the first set of reference signal resources is an aperiodic set of reference signal resources, a semi-persistent set of reference signal resources, or a periodic set of reference signal resources.

[0319] For some possible designs and beneficial effects of the communication device 1000, please refer to the relevant content in the embodiment shown in Figure 8 above, which will not be repeated here.

[0320] As shown in Figure 11, the communication device 1100 includes a processor 1110 and an interface circuit 1120. The processor 1110 and the interface circuit 1120 are coupled to each other. It is understood that the interface circuit 1120 can be a transceiver or an input / output interface. Optionally, the communication device 1100 may also include a memory 1130 for storing instructions executed by the processor 1110, or storing input data required by the processor 1110 to execute instructions, or storing data generated after the processor 1110 executes instructions.

[0321] When the communication device 1100 is used to implement the above method embodiment, the processor 1110 is used to implement the function of the processing unit 1010, and the interface circuit 1120 is used to implement the function of the transceiver unit 1020.

[0322] It is understood that the processor in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0323] This application provides another example of a device, the notification device including at least one processor and at least one memory, the at least one processor and the at least one memory coupled together, the at least one memory for storing instructions, which, when executed by the at least one processor, cause the communication device to perform the methods described in the above embodiments. Taking a communication device including a processor and a memory as an example, as shown in FIG11, communication device 1100 includes a processor 1110 and a memory 1130. The processor 1110 and the memory 1130 are coupled together, the memory 1130 stores instructions, and when the instructions stored in the memory 1130 are executed by the processor 1110, the communication device 1100 performs the methods performed by the various communication devices in the above embodiments.

[0324] The method steps in the embodiments of this application can be implemented in hardware or in software instructions executable by a processor. The software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, CD-ROMs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. The storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in the aforementioned terminal or access network device. The processor and storage medium can also exist as discrete components in the terminal or access network device.

[0325] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0326] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0327] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects. "Including at least one of A, B, and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.

[0328] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that, The method includes: Receive first information, the first information indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time unit occupied by the first reference signal resource set includes sub-band full-duplex SBFD symbols and non-SBFD symbols; Receive a reference signal on the first set of reference signal resources; First channel state information is sent according to the first information. The first channel state information is determined based on reference signals received on reference signal resources occupying SBFD symbols, and the reference signal resources occupying SBFD symbols belong to the first set of reference signal resources; or the first channel state information is determined based on reference signals received on reference signal resources occupying non-SBFD symbols, and the reference signal resources occupying non-SBFD symbols belong to the first set of reference signal resources.

2. The method as described in claim 1, characterized in that, The symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

3. The method as described in claim 1 or 2, characterized in that, The time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or that the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

4. The method according to any one of claims 1-3, characterized in that, Also includes: Receive the channel state information reported by the first reference signal resource set; The channel state information reporting configuration corresponding to the first reference signal resource set includes first indication information, which indicates the type of symbol used to determine the channel state information. If the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

5. The method as described in claim 4, characterized in that, The first indication information is effective only if the time unit occupied by the first reference signal resource set includes both SBFD symbols and non-SBFD symbols.

6. The method according to any one of claims 1-3, characterized in that, The first reference signal resource set is an aperiodic reference signal resource set; the aperiodic triggering state also corresponds to a second reference signal resource set, which is a periodic reference signal resource set or a semi-persistent reference signal resource set; The method further includes: Receive the channel state information reported by the second reference signal resource set; The channel state information reporting configuration corresponding to the second reference signal resource set includes second indication information, which indicates the type of symbol used to determine the channel state information. If the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

7. The method according to any one of claims 1-3, characterized in that, The first set of reference signal resources is an aperiodic set of reference signal resources; the aperiodic triggering state also corresponds one-to-one with M sets of reference signal resources, which are either periodic sets of reference signal resources or semi-persistent sets of reference signal resources, where M is an integer greater than or equal to 2. The method further includes: Receive M channel state information reporting configurations, wherein the M reference signal resource sets correspond one-to-one with the M channel state information reporting configurations, and the types of symbols indicated by the M channel state information reporting configurations for determining the channel state information are all the same; If the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

8. The method according to any one of claims 1-3, characterized in that, If the number of non-SBFD symbols occupied by the first reference signal resource set is greater than or equal to the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols. If the number of non-SBFD symbols occupied by the first reference signal resource set is less than the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

9. The method according to any one of claims 1-3, characterized in that, If the number of reference signal resources occupying non-SBFD symbols is greater than or equal to the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols. If the number of reference signal resources occupying non-SBFD symbols is less than the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

10. The method according to any one of claims 1-5, 8, and 9, characterized in that, The first set of reference signal resources is an aperiodic set of reference signal resources, a semi-continuous set of reference signal resources, or a periodic set of reference signal resources.

11. A communication method, characterized in that, The method includes: Send a first message indicating an aperiodic triggering state, wherein the aperiodic triggering state corresponds to a first reference signal resource set, and the time units occupied by the first reference signal resource set include SBFD symbols and non-SBFD symbols; Transmit a reference signal on the first set of reference signal resources; Receive first channel state information, the first channel state information being determined based on reference signals received on reference signal resources occupying SBFD symbols, the reference signal resources occupying SBFD symbols belonging to the first set of reference signal resources; or the first channel state information being determined based on reference signals received on reference signal resources occupying non-SBFD symbols, the reference signal resources occupying non-SBFD symbols belonging to the first set of reference signal resources.

12. The method as described in claim 11, characterized in that, The symbols occupied by the reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and the symbols occupied by the reference signal resources that occupy SBFD symbols are all SBFD symbols.

13. The method as described in claim 11 or 12, characterized in that, The time unit occupied by the first reference signal resource set including SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first reference signal resource set include the SBFD symbols and the non-SBFD symbols, or that the time slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols.

14. The method according to any one of claims 11-13, characterized in that, Also includes: Send the channel state information corresponding to the first reference signal resource set to report the configuration; The channel state information reporting configuration corresponding to the first reference signal resource set includes first indication information, which indicates the type of symbol used to determine the channel state information. If the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

15. The method as described in claim 14, characterized in that, The first indication information is effective only if the time unit occupied by the first reference signal resource set includes both SBFD symbols and non-SBFD symbols.

16. The method according to any one of claims 11-13, characterized in that, The first reference signal resource set is an aperiodic reference signal resource set; the aperiodic triggering state also corresponds to a second reference signal resource set, which is a periodic reference signal resource set or a semi-persistent reference signal resource set; The method further includes: Send the channel state information corresponding to the second reference signal resource set to the configuration report; The channel state information reporting configuration corresponding to the second reference signal resource set includes second indication information, which indicates the type of symbol used to determine the channel state information. If the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

17. The method according to any one of claims 11-13, characterized in that, The first set of reference signal resources is an aperiodic set of reference signal resources; the aperiodic triggering state also corresponds one-to-one with M sets of reference signal resources, which are either periodic sets of reference signal resources or semi-persistent sets of reference signal resources, where M is an integer greater than or equal to 2. The method further includes: Send M channel state information reporting configurations, wherein the M reference signal resource sets correspond one-to-one with the M channel state information reporting configurations, and the types of symbols indicated by the M channel state information reporting configurations for determining the channel state information are all the same; Wherein, if the type of the symbol used to determine the channel state information is an SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the SBFD symbol; if the type of the symbol used to determine the channel state information is a non-SBFD symbol, the first channel state information is determined based on the reference signal received on the reference signal resource occupying the non-SBFD symbol.

18. The method according to any one of claims 11-13, characterized in that, If the number of non-SBFD symbols occupied by the first reference signal resource set is greater than or equal to the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols. If the number of non-SBFD symbols occupied by the first reference signal resource set is less than the number of SBFD symbols occupied by the first reference signal resource set, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

19. The method according to any one of claims 11-13, characterized in that, If the number of reference signal resources occupying non-SBFD symbols is greater than or equal to the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying non-SBFD symbols. If the number of reference signal resources occupying non-SBFD symbols is less than the number of reference signal resources occupying SBFD symbols, the first channel state information is determined based on the reference signals received on the reference signal resources occupying SBFD symbols.

20. The method according to any one of claims 11-15, 18, and 19, characterized in that, The first set of reference signal resources is an aperiodic set of reference signal resources, a semi-continuous set of reference signal resources, or a periodic set of reference signal resources.

21. A communication device, characterized in that, Includes units or modules for performing the method as described in any one of claims 1 to 20.

22. A communication device, characterized in that, The communication device includes at least one processor; the at least one processor is configured to perform the method as described in any one of claims 1 to 20.

23. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a program that, when run on the device, causes the device to perform the method as described in any one of claims 1 to 20.

24. A computer program product, characterized in that, The computer program product includes a program or instructions that, when executed by a device, cause the device to perform the method as described in any one of claims 1 to 20.

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