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CN-122002554-A - Communication method and device

CN122002554ACN 122002554 ACN122002554 ACN 122002554ACN-122002554-A

Abstract

A communication method and device includes that a terminal receives first information, the first information indicates an aperiodic trigger state, the aperiodic trigger state corresponds to a first reference signal resource set, a time unit occupied by the first reference signal resource set comprises SBFD symbols and non-SBFD symbols, the terminal receives reference signals on the first reference signal resource set, and sends first channel state information according to the first information, the first channel state information is determined according to the reference signals received on the reference signal resources occupying SBFD symbols, or the first channel state information is determined according to the reference signals received on the reference signal resources occupying non-SBFD symbols. By adopting the method, the related design under the communication scene that SBFD symbols exist in the time slot can be perfected, and consistent understanding of the terminal and the access network equipment on the CSI-RS on which the CSI is determined is ensured.

Inventors

  • JIAO SHURONG
  • LI JUN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (20)

  1. 1. A method of communication, the method comprising: Receiving first information, wherein the first information indicates an aperiodic trigger state, the aperiodic trigger state corresponds to a first reference signal resource set, and a time unit occupied by the first reference signal resource set comprises a subband full duplex SBFD symbol and a non-SBFD symbol; Receiving reference signals on the first set of reference signal resources; And transmitting first channel state information according to the first information, wherein the first channel state information is determined according to a reference signal received on a reference signal resource occupying SBFD symbols, the reference signal resource occupying SBFD symbols belongs to the first reference signal resource set, or the first channel state information is determined according to a reference signal received on a reference signal resource occupying non-SBFD symbols, and the reference signal resource occupying non-SBFD symbols belongs to the first reference signal resource set.
  2. 2. The method of claim 1, wherein the symbols occupied by reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and wherein the symbols occupied by reference signal resources that occupy SBFD symbols are all SBFD symbols.
  3. 3. The method of claim 1 or 2, wherein the time unit occupied by the first set of reference signal resources comprises SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first set of reference signal resources comprise the SBFD symbols and the non-SBFD symbols or that a slot occupied by the first set of reference signal resources comprises the SBFD symbols and the non-SBFD symbols.
  4. 4. A method according to any one of claims 1-3, further comprising: receiving channel state information reporting configuration corresponding to the first reference signal resource set; The channel state information reporting configuration corresponding to the first reference signal resource set comprises first indication information, wherein the first indication information indicates a type of a symbol used for determining the channel state information; If the type of the symbol used for determining the channel state information is SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying SBFD symbols, and if the type of the symbol used for determining the channel state information is non-SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying non-SBFD symbols.
  5. 5. The method of claim 4, wherein the first indication information is valid only if a time unit occupied by the first set of reference signal resources comprises SBFD symbols and non-SBFD symbols.
  6. 6. The method of any one of claims 1-3, wherein the first set of reference signal resources is a set of aperiodic reference signal resources, the aperiodic trigger state further corresponding to a second set of reference signal resources, the second set of reference signal resources being a set of periodic reference signal resources or a set of semi-persistent reference signal resources; The method further comprises the steps of: Receiving channel state information reporting configuration corresponding to the second reference signal resource set; The channel state information reporting configuration corresponding to the second reference signal resource set comprises second indication information, wherein the second indication information indicates the type of a symbol used for determining the channel state information; If the type of the symbol used for determining the channel state information is SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying SBFD symbols, and if the type of the symbol used for determining the channel state information is non-SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying non-SBFD symbols.
  7. 7. The method of any one of claims 1-3, wherein the first set of reference signal resources is a set of aperiodic reference signal resources, the aperiodic trigger state further corresponds one-to-one to M sets of reference signal resources, the M sets of reference signal resources being a set of periodic reference signal resources or a set of semi-persistent reference signal resources, M being an integer greater than or equal to 2; The method further comprises the steps of: Receiving M channel state information reporting configurations, wherein M reference signal resource sets are in one-to-one correspondence with the M channel state information reporting configurations, and the M channel state information reporting configurations respectively indicate the same types of symbols for determining the channel state information; If the type of the symbol used for determining the channel state information is SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying SBFD symbols, and if the type of the symbol used for determining the channel state information is non-SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying non-SBFD symbols.
  8. 8. The method of any of claims 1-3, wherein the first channel state information is determined from reference signals received on reference signal resources occupying non-SBFD symbols if a number of non-SBFD symbols occupied by the first set of reference signal resources is greater than or equal to a number of SBFD symbols occupied by the first set of reference signal resources; If the number of non-SBFD symbols occupied by the first set of reference signal resources is less than the number of SBFD symbols occupied by the first set of reference signal resources, the first channel state information is determined from reference signals received on the reference signal resources occupied by SBFD symbols.
  9. 9. The method of any of claims 1-3, wherein the first channel state information is determined from reference signals received on the reference signal resources occupying non-SBFD symbols 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; And if the number of the reference signal resources occupying non-SBFD symbols is smaller than the number of the reference signal resources occupying SBFD symbols, determining the first channel state information according to the reference signals received on the reference signal resources occupying SBFD symbols.
  10. 10. The method according to any of claims 1-5, 8, 9, wherein the first set of reference signal resources is a set of aperiodic reference signal resources, or a set of semi-persistent reference signal resources, or a set of periodic reference signal resources.
  11. 11. A method of communication, the method comprising: Transmitting first information, wherein the first information indicates an aperiodic trigger state, the aperiodic trigger state corresponds to a first reference signal resource set, and a time unit occupied by the first reference signal resource set comprises SBFD symbols and non-SBFD symbols; transmitting reference signals on the first set of reference signal resources; And receiving first channel state information, wherein the first channel state information is determined according to reference signals received on reference signal resources occupying SBFD symbols, the reference signal resources occupying SBFD symbols belong to the first reference signal resource set, or the first channel state information is determined according to reference signals received on reference signal resources occupying non-SBFD symbols, and the reference signal resources occupying non-SBFD symbols belong to the first reference signal resource set.
  12. 12. The method of claim 11, wherein the symbols occupied by reference signal resources that occupy non-SBFD symbols are all non-SBFD symbols, and wherein the symbols occupied by reference signal resources that occupy SBFD symbols are all SBFD symbols.
  13. 13. The method of claim 11 or 12, wherein the time unit occupied by the first set of reference signal resources comprises SBFD symbols and non-SBFD symbols means that at least two symbols occupied by the first set of reference signal resources comprise the SBFD symbols and the non-SBFD symbols or that a slot occupied by the first set of reference signal resources comprises the SBFD symbols and the non-SBFD symbols.
  14. 14. The method of any one of claims 11-13, further comprising: transmitting channel state information reporting configuration corresponding to the first reference signal resource set; The channel state information reporting configuration corresponding to the first reference signal resource set comprises first indication information, wherein the first indication information indicates a type of a symbol used for determining the channel state information; If the type of the symbol used for determining the channel state information is SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying SBFD symbols, and if the type of the symbol used for determining the channel state information is non-SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying non-SBFD symbols.
  15. 15. The method of claim 14, wherein the first indication information is valid only if a time unit occupied by the first set of reference signal resources comprises SBFD symbols and non-SBFD symbols.
  16. 16. The method of any one of claims 11-13, wherein the first set of reference signal resources is a set of aperiodic reference signal resources, the aperiodic trigger state further corresponding to a second set of reference signal resources, the second set of reference signal resources being a set of periodic reference signal resources or a set of semi-persistent reference signal resources; The method further comprises the steps of: Transmitting channel state information reporting configuration corresponding to the second reference signal resource set; The channel state information reporting configuration corresponding to the second reference signal resource set comprises second indication information, wherein the second indication information indicates the type of a symbol used for determining the channel state information; If the type of the symbol used for determining the channel state information is SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying SBFD symbols, and if the type of the symbol used for determining the channel state information is non-SBFD symbols, the first channel state information is determined according to the reference signal received on the reference signal resource occupying non-SBFD symbols.
  17. 17. The method of any one of claims 11-13, wherein the first set of reference signal resources is a set of aperiodic reference signal resources, the aperiodic trigger state further corresponds one-to-one to M sets of reference signal resources, the M sets of reference signal resources being a set of periodic reference signal resources or a set of semi-persistent reference signal resources, M being an integer greater than or equal to 2; The method further comprises the steps of: m channel state information reporting configurations are sent, the M reference signal resource sets are in one-to-one correspondence with the M channel state information reporting configurations, and the types of symbols which are respectively indicated by the M channel state information reporting configurations and used for determining the channel state information are the same; And if the type of the symbol used for determining the channel state information is a non-SBFD symbol, the first channel state information is determined according to the reference signal received on the reference signal resource occupying a non-SBFD symbol.
  18. 18. The method of any of claims 11-13, wherein the first channel state information is determined from reference signals received on reference signal resources occupying non-SBFD symbols if a number of non-SBFD symbols occupied by the first set of reference signal resources is greater than or equal to a number of SBFD symbols occupied by the first set of reference signal resources; If the number of non-SBFD symbols occupied by the first set of reference signal resources is less than the number of SBFD symbols occupied by the first set of reference signal resources, the first channel state information is determined from reference signals received on the reference signal resources occupied by SBFD symbols.
  19. 19. The method of any of claims 11-13, wherein the first channel state information is determined from reference signals received on the reference signal resources occupying non-SBFD symbols 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; And if the number of the reference signal resources occupying non-SBFD symbols is smaller than the number of the reference signal resources occupying SBFD symbols, determining the first channel state information according to the reference signals received on the reference signal resources occupying SBFD symbols.
  20. 20. The method according to any of claims 11-15, 18, 19, wherein the first set of reference signal resources is a set of aperiodic reference signal resources, or a set of semi-persistent reference signal resources, or a set of periodic reference signal resources.

Description

Communication method and device Technical Field The present application relates to the field of communications, and in particular, to a communication method and apparatus. Background To increase uplink coverage and reduce uplink transmission delay, the access network device may issue a time division duplex (time division duplex, TDD) configuration and a sub-band full duplex (subband full duplex, SBFD) configuration to the terminal. Further, the terminal may determine which symbols in a slot are SBFD symbols and which symbols are non-SBFD symbols according to the TDD configuration and SBFD configuration. Wherein, in one slot, the downlink available frequency domain ranges corresponding to SBFD symbols and non-SBFD symbols (e.g., downlink symbols) respectively may be different. For a communication scenario in which SBFD symbols exist in a time slot, how to perfect the related design implementation in the communication scenario, and ensure the communication performance while increasing uplink coverage is a considerable problem. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which are used for realizing perfecting related design under SBFD communication scenes and ensuring communication performance. In a first aspect, an embodiment of the present application provides a communication method, which may be applied to a terminal side, for example, a terminal or a communication module/processing module in the terminal, or a circuit or a chip (such as a modem chip, also referred to as a baseband (baseband) chip) in the terminal, or a system on chip (SoC) chip or a system-in-a package (SYSTEMIN PACKAGE) SIP chip including a modem core, or a circuit or a chip (such as a graphics processor (graphics processing unit, GPU)) in the terminal in which the method is applied to the terminal, for example, the terminal receives a first information indicating a non-periodic trigger state, where the non-periodic trigger state corresponds to a first reference signal resource set, and a time unit occupied by the first reference signal resource set includes a sub-band full duplex SBFD symbol and a non-SBFD symbol, the terminal receives a reference signal on the first reference signal resource set, and sends first channel state information according to the first information, the first channel state information determines that the first channel state information belongs to a reference signal SBFD or a reference signal which belongs to the first reference signal on the reference signal or a non-occupied signal resource set, and the reference signal is determined that the reference signal is a reference signal 5629 is a reference signal on the first reference signal resource set. By adopting the method, the related design under the communication scene that SBFD symbols exist in the time slot can be perfected, the communication performance can be ensured while the uplink coverage is increased, and meanwhile, the terminal and the access network equipment can be ensured to understand and agree with each other about the CSI-RS (or the effective symbol type) on which the CSI is determined. In one possible design, the symbols occupied by reference signal resources that occupy symbols other than SBFD are all symbols other than SBFD, and the symbols occupied by reference signal resources that occupy SBFD are all SBFD. In one possible design, the time unit occupied by the first reference signal resource set includes SBFD symbols and non-SBFD symbols, which 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 a slot occupied by the first reference signal resource set includes the SBFD symbols and the non-SBFD symbols. In one possible design, the terminal receives a channel state information reporting configuration corresponding to the first reference signal resource set, where the channel state information reporting configuration corresponding to the first reference signal resource set includes first indication information, the first indication information indicates a type of a symbol used for determining channel state information, if the type of the symbol used for determining channel state information is SBFD symbols, the first channel state information is determined according to a reference signal received on a reference signal resource occupying SBFD symbols, and if the type of the symbol used for determining channel state information is non-SBFD symbols, the first channel state information is determined according to a reference signal received on a reference signal resource occupying non-SBFD symbols. By adopting the design, the terminal and the access network equipment are ensured to understand the CSI-RS (or the effective symbol type) based on which the CSI is determined consistently, and the access network equipment can flexibly determine the effective symbol type according to the