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US-20260129676-A1 - CHANNEL DETECTION METHOD AND APPARATUS

US20260129676A1US 20260129676 A1US20260129676 A1US 20260129676A1US-20260129676-A1

Abstract

A method for channel detection, performed by a base station, includes: in response to determining that interference caused by downlink transmission to an interfered cell of an interfered base station meets a first condition, scheduling channel detection before performing downlink transmission to a terminal.

Inventors

  • Yajun Zhu

Assignees

  • BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date
20260507
Application Date
20220927

Claims (20)

  1. 1 . A method for channel detection, performed by a base station, comprising: in response to determining that interference caused by downlink transmission to an interfered cell of an interfered base station meets a first condition, determining to perform channel detection before performing downlink transmission to a terminal.
  2. 2 . The method according to claim 1 , wherein determining to perform the channel detection before the downlink transmission to the terminal comprises: determining auxiliary information of the interfered base station; and determining configuration information for performing the channel detection according to the auxiliary information.
  3. 3 . The method according to claim 2 , wherein the configuration information comprises at least one of: a time domain resource range for performing the channel detection; a frequency domain resource range for performing the channel detection; a channel detection mechanism; or a frequency domain channel unit for the channel detection.
  4. 4 . The method according to claim 2 , further comprising: sending indication information to the terminal, wherein the indication information is configured to indicate, to the terminal, to cancel uplink transmission on at least one of a time domain resource or a frequency domain resource indicated by the configuration information.
  5. 5 . The method according to claim 2 , further comprising: performing the channel detection on at least one of a time domain resource or a frequency domain resource indicated by the configuration information, and generating a channel detection result.
  6. 6 . The method according to claim 5 , further comprising: in response to the channel detection result indicating that a channel resource is occupied, canceling downlink data transmission, or adjusting a downlink transmission parameter.
  7. 7 . A method for channel detection, performed by a terminal, comprising: receiving indication information sent by a base station, wherein the indication information is configured to indicate, to the terminal, to cancel uplink transmission on at least one of a time domain resource or a frequency domain resource indicated by configuration information; and the configuration information is determined by the base station according to auxiliary information of an interfered base station corresponding to an interfered cell in a case where it is determined that interference caused by downlink transmission to the interfered cell of the interfered base station meets a first condition; and canceling, according to the indication information, the uplink transmission on at least one of the time domain resource or the frequency domain resource indicated by the configuration information.
  8. 8 . The method according to claim 7 , wherein the configuration information comprises at least one of: a time domain resource range for performing the channel detection; a frequency domain resource range for performing the channel detection; a channel detection mechanism; or a frequency domain channel unit for the channel detection.
  9. 9 . A method for channel detection, performed by a terminal, comprising: in response to determining that interference caused by uplink transmission to an interfered terminal meets a second condition, determining to perform channel detection before performing uplink transmission to a base station.
  10. 10 . The method according to claim 9 , wherein determining to perform the channel detection before performing the uplink transmission to the base station comprises: receiving a high-level signaling sent by the base station; and determining configuration information for performing the channel detection according to the high-level signaling.
  11. 11 . The method according to claim 10 , wherein the configuration information comprises at least one of: a time domain resource range for performing the channel detection; a frequency domain resource range for performing the channel detection; a channel detection mechanism; or a frequency domain channel unit for the channel detection.
  12. 12 . The method according to claim 10 , further comprising: performing the channel detection on at least one of a time domain resource or a frequency domain resource indicated by the configuration information, and generating a channel detection result.
  13. 13 . The method according to claim 9 , wherein determining to perform the channel detection before performing the uplink transmission to the base station comprises: determining a first time domain position; and determining to perform the channel detection at the first time domain position before performing the uplink transmission to the base station, and generating a channel detection result.
  14. 14 . The method according to claim 12 , further comprising: in response to the channel detection result indicating that the channel is busy, determining to cancel the uplink transmission.
  15. 15 . The method according to claim 12 , further comprising: determining to adjust an uplink transmission parameter according to the channel detection result.
  16. 16 . The method according to claim 15 , wherein determining to adjust the uplink transmission parameter according to the channel detection result comprises: determining a correspondence between the channel detection result and a parameter adjustment mode; and in response to determining a target parameter adjustment mode according to the channel detection result and the correspondence, adjusting the uplink transmission parameter according to the target parameter adjustment mode.
  17. 17 . The method according to claim 15 , wherein the uplink transmission parameter comprises at least one of: an uplink transmission power; an uplink transmission modulation and coding scheme, MCS, level; or amount of resources occupied by the uplink transmission.
  18. 18 .- 20 . (canceled)
  19. 21 . A base station, comprising: a processor; and a memory, having stored therein computer programs, wherein the processor is configured to perform the method according to claim 1 .
  20. 22 .- 23 . (canceled)

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a U.S. national stage application of International Application No. PCT/CN2022/121902, filed Sep. 27, 2022, the entire contents of which are incorporated herein by reference. FIELD The present disclosure relates to the field of communication technology, and more particularly to a method and apparatus for channel detection. BACKGROUND In a TDD (Time Division Duplexing) system, TDD configuration of adjacent cells maintains the consistent transmission direction, so that no serious cross-interference occurs. In the related art, in order to better adapt to the transmission of services, a solution is proposed for the base station to dynamically adjust the TDD configuration. In such a case, the problem of cross-interference between uplink and downlink transmissions among different cells needs to be solved. Furthermore, for the case of dynamic TDD, co-channel interference is generally caused by deployment within the same operator. SUMMARY In a first aspect, embodiments of the present disclosure provide a method for channel detection, which is performed by a base station, and includes: in response to determining that interference caused by downlink transmission to an interfered cell meets a preset condition, determining to perform (scheduling) channel detection before performing downlink transmission to a terminal. In a second aspect, embodiments of the present disclosure provide another method for channel detection, which is performed by a terminal, and includes: receiving indication information sent by a base station, where the indication information is configured to indicate, to the terminal, to cancel uplink transmission on a time domain resource and/or a frequency domain resource indicated by configuration information; and the configuration information is determined by the base station according to auxiliary information of an interfered base station corresponding to an interfered cell in a case where it is determined that interference caused by downlink transmission to the interfered cell meets a preset condition; and canceling, according to the indication information, the uplink transmission on the time domain resource and/or the frequency domain resource indicated by the configuration information. In a third aspect, embodiments of the present disclosure provide yet another method for channel detection, which is performed by a terminal, and includes: in response to determining that interference caused by uplink transmission to an interfered terminal meets a preset condition, determining to perform channel detection before performing uplink transmission to a base station. In a fourth aspect, embodiments of the present disclosure provide a communication apparatus having some or all of the functions of the base station for implementing the method as described in the first aspect above. For example, the communication apparatus may have functions as described in some or all the embodiments in the present disclosure, or may have functions for implementing any of embodiments of the present disclosure alone. The functions may be implemented by hardware or software executed on corresponding hardware. The hardware or software includes one or more units or modules corresponding to the functions described above. In an implementation, the communication apparatus may include a transceiver module and a processing module in structure. The processing module is configured to support the communication apparatus to perform the corresponding functions of the method described above. The transceiver module is configured to support communications between the communication apparatus and other devices. The communication apparatus may further include a storage module for coupling with the transceiver module and the processing module, and storing computer programs and data necessary for the communication apparatus. In an implementation, the communication apparatus includes a processing module, configured to determine to perform channel detection before performing downlink transmission to a terminal, in response to determining that interference caused by downlink transmission to an interfered cell meets a first condition. In a fifth aspect, embodiments of the present disclosure provide another communication apparatus, having some or all of the functions of the terminal for implementing the method examples as described in the second aspect above. For example, the communication apparatus may have functions as described in some or all the embodiments in the present disclosure, or may have functions for implementing any of embodiments of the present disclosure alone. The functions may be implemented by hardware or software executed on corresponding hardware. The hardware or software includes one or more units or modules corresponding to the functions described above. In an implementation, the communication apparatus may include a transceiver module and a processing module in structure.