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CN-115150951-B - Transmission direction determining method and device, terminal and network side equipment

CN115150951BCN 115150951 BCN115150951 BCN 115150951BCN-115150951-B

Abstract

The application discloses a method, a device, a terminal and network side equipment for determining a transmission direction, which belong to the technical field of communication. The terminal determines a transmission direction corresponding to the time unit according to the first indication signaling, wherein the transmission direction comprises an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; the flexible transmission direction can be indicated as at least one of an uplink transmission direction, a downlink transmission direction, and a flexible direction in which reception is not performed and transmission is not performed.

Inventors

  • LI NA
  • PAN XUEMING
  • SHEN XIAODONG
  • LI GEN
  • WU KAI

Assignees

  • 维沃移动通信有限公司

Dates

Publication Date
20260505
Application Date
20210331

Claims (20)

  1. 1. A method for determining a transmission direction, comprising: The terminal determines a transmission direction corresponding to the time unit according to the first indication signaling, and comprises the following steps: The terminal determines a transmission direction corresponding to at least one frequency domain unit in a time unit according to a first indication signaling, wherein the transmission direction corresponding to the frequency domain unit comprises an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; The terminal determines a transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit, wherein the transmission direction corresponding to the time unit comprises an uplink transmission direction, a downlink transmission direction, a flexible transmission direction or a transmission direction determined according to a preset rule; Wherein the flexible transmission direction can be indicated as at least one of: an uplink transmission direction; A downlink transmission direction; flexible direction without reception and without transmission; The determining, by the terminal, the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit includes: under the condition that the transmission direction corresponding to the frequency domain unit comprises at least one of the following, the terminal determines that the transmission direction corresponding to the time unit is a downlink transmission direction; The transmission direction corresponding to the SSB position of the synchronous signal/physical broadcast channel signal block in the system message 1; The service cell configures a transmission direction corresponding to the SSB position indicated in the public signaling; And the transmission direction corresponding to the control resource set used for the first physical downlink control channel PDCCH public search space in the main information block.
  2. 2. The method of claim 1, wherein the first indication signaling comprises at least one of: High-level signaling; radio resource control, RRC, signaling; Dynamic signaling; System messages.
  3. 3. The method of claim 2, wherein the system message comprises at least one of full duplex uplink and downlink common configuration information and flexible duplex uplink and downlink common configuration information.
  4. 4. The method of claim 2, wherein the RRC signaling includes at least one of full duplex uplink and downlink specific configuration information and flexible duplex uplink and downlink specific configuration information.
  5. 5. The method according to claim 1, wherein the determining, by the terminal, the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit includes: If the transmission direction corresponding to the frequency domain unit comprises at least one of the following, the terminal determines that the transmission direction corresponding to the time unit is an uplink transmission direction; Uplink transmission direction of semi-static indication of system information; an uplink transmission direction of the RRC signaling semi-static indication; uplink transmission directions corresponding to uplink transmission indicated by higher layer signaling or RRC signaling; uplink transmission direction indicated by dynamic signaling.
  6. 6. The method according to claim 1, wherein the determining, by the terminal, the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit includes: Under the condition that the transmission direction corresponding to the frequency domain unit comprises at least one of the following, the terminal determines that the transmission direction corresponding to the time unit is a flexible transmission direction; flexible transmission direction of semi-static indication of system message; Flexible transmission direction of RRC signaling semi-static indication; Flexible transmission direction of dynamic signaling indication.
  7. 7. The method according to claim 1, wherein the determining, by the terminal, the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit includes: Under the condition that at least one first frequency domain unit exists in the time unit and the transmission direction corresponding to the second frequency domain unit is a flexible transmission direction, the terminal determines that the transmission direction corresponding to the time unit is a downlink transmission direction; The first frequency domain unit refers to a frequency domain unit for determining that the corresponding transmission direction is the downlink transmission direction according to the first indication signaling, and the second frequency domain unit refers to a frequency domain unit in the time unit except the first frequency domain unit.
  8. 8. The method according to claim 1, wherein the determining, by the terminal, the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit includes: under the condition that at least one third frequency domain unit exists in the time unit and the transmission direction corresponding to the fourth frequency domain unit is a flexible transmission direction, the terminal determines that the transmission direction corresponding to the time unit is an uplink transmission direction; The third frequency domain unit refers to a frequency domain unit for determining that the corresponding transmission direction is the uplink transmission direction according to the first indication signaling, and the fourth frequency domain unit refers to a frequency domain unit except the third frequency domain unit in the time unit.
  9. 9. The method according to claim 1, wherein the determining, by the terminal, the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit includes: Under the condition that the transmission direction determined by any two frequency domain units in the time unit according to the first indication signaling is a first preset combined transmission direction, the terminal determines the transmission direction corresponding to the time unit according to a preset rule; Wherein the preset rule comprises at least one of the following: determining the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit with the minimum index in the time unit; determining a transmission direction corresponding to the time unit according to the transmission direction corresponding to the reference frequency domain unit in the time unit; Determining a transmission direction corresponding to the time unit according to a relation among a first numerical value, a second numerical value and a third numerical value, wherein the first numerical value is the number of frequency domain units with the corresponding transmission direction being an uplink transmission direction, the second numerical value is the number of frequency domain units with the corresponding transmission direction being a downlink transmission direction in the time unit, and the third numerical value is the number of frequency domain units with the corresponding transmission direction being a flexible transmission direction in the time unit; default is a preset transmission direction, wherein the preset transmission direction comprises a downlink transmission direction, an uplink transmission direction or a flexible transmission direction; determining a network configuration that is incorrect; The terminal autonomously determines the transmission direction corresponding to the time unit; determining a transmission direction corresponding to the time unit according to the dynamic signaling on the target carrier; Determining a transmission direction corresponding to the time unit according to dynamic signaling on the activated bandwidth part BWP on the target carrier; determining a transmission direction corresponding to the time unit according to target information of a signal to be processed on a target carrier; determining a transmission direction corresponding to the time unit according to target information of a signal to be processed on the BWP activated on a target carrier; the target information comprises at least one of signal priority, signal content, a channel where the signal is located and the size of the signal; the target carrier is all carriers in the time unit or the first carrier in the time unit.
  10. 10. The method of claim 9, wherein the first carrier comprises at least one of: the carrier with the largest or smallest index in all active carriers; A reference carrier configured or indicated by the network; The index of the first carrier wave set of the time unit is the largest or smallest, and the transmission direction is the uplink or downlink carrier wave, and the first carrier wave set refers to the set of active carrier waves except that the transmission direction is the flexible transmission direction in the time unit.
  11. 11. The method of claim 9, wherein the first predetermined combined transmission direction comprises at least one of: A downlink transmission direction and an uplink transmission direction; a semi-static indicated downlink transmission direction and a dynamic indicated flexible transmission direction; an uplink transmission direction of semi-static indication and a flexible transmission direction of dynamic indication; The transmission direction corresponding to the SSB position in the system message 1 and the flexible transmission direction of dynamic indication; the service cell configures a transmission direction corresponding to an SSB position indicated in the public signaling and a flexible transmission direction of dynamic indication; And the transmission direction corresponding to the control resource set for the first PDCCH public search space in the main information block and the flexible transmission direction of dynamic indication.
  12. 12. The method of claim 1, wherein the determining, by the terminal, the transmission direction corresponding to the time unit according to the transmission direction corresponding to the at least one frequency domain unit comprises at least one of: Under the condition that the transmission direction determined by any two frequency domain units in the time unit according to the first indication signaling is the second preset combined transmission direction, determining that the transmission direction corresponding to the time unit is an uplink transmission direction; If the time difference between the first symbol and the second symbol is greater than or equal to the terminal processing time under the condition that the transmission direction determined by any two frequency domain units in the time unit according to the first indication signaling is the third preset combined transmission direction, determining that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction, otherwise, determining that the transmission direction corresponding to the time unit is an uplink transmission direction or determining that the transmission direction is an incorrect network configuration; Under the condition that the transmission direction determined by any two frequency domain units in the time unit according to the first indication signaling is a third preset combined transmission direction, determining that the transmission direction corresponding to the time unit is a downlink transmission direction or a flexible transmission direction, wherein the time difference between a first symbol and a second symbol configured by a network is greater than or equal to the terminal processing time; wherein the second preset combined transmission direction includes at least one of: a semi-static indicated downlink transmission direction, a dynamic indicated uplink transmission direction or a flexible transmission direction; A downlink transmission direction corresponding to downlink transmission indicated by high-layer signaling or RRC signaling, and an uplink transmission direction or flexible transmission direction indicated dynamically; The third preset combined transmission direction includes at least one of the following: Semi-static indicated uplink transmission direction, dynamic indicated downlink transmission direction or flexible transmission direction; Uplink transmission direction corresponding to uplink transmission indicated by high-layer signaling or RRC signaling, and downlink transmission direction or flexible transmission direction indicated dynamically; The first symbol is a starting symbol of uplink transmission of a first frequency domain unit in any two frequency domain units, and the second symbol is a last symbol of downlink transmission or flexible transmission of a second frequency domain unit in any two frequency domain units.
  13. 13. The method according to claim 1, wherein the determining, by the terminal, the transmission direction corresponding to the time unit according to the transmission direction corresponding to the at least one frequency domain unit, includes: under the condition that the transmission direction corresponding to any frequency domain unit in the time unit is at least one of the following, the terminal determines the transmission direction corresponding to the time unit as a downlink transmission direction and performs corresponding downlink behavior; a transmission direction corresponding to transmission timing of the SSB indicated by the SSB position; The SSB measures the transmission direction corresponding to the transmission time indicated by the timing configuration; A transmission direction corresponding to the downlink measurement reference signal; The transmission direction corresponding to the reference signal is effectively tracked; and the transmission direction corresponding to the control resource set of the first physical downlink control channel PDCCH public search space.
  14. 14. A method for determining a transmission direction, comprising: The network side equipment sends a first indication signaling, wherein the first indication signaling is used for determining a transmission direction corresponding to at least one frequency domain unit in a time unit, the transmission direction corresponding to the frequency domain unit comprises an uplink transmission direction, a downlink transmission direction or a flexible transmission direction, the transmission direction corresponding to the frequency domain unit is used for determining the transmission direction corresponding to the time unit, and the transmission direction corresponding to the time unit comprises the uplink transmission direction, the downlink transmission direction, the flexible transmission direction or the transmission direction determined according to a preset rule; Wherein the flexible transmission direction can be indicated as at least one of: an uplink transmission direction; A downlink transmission direction; flexible direction without reception and without transmission; The determining the transmission direction corresponding to the time unit, where the transmission direction corresponding to the frequency domain unit is used for determining the transmission direction corresponding to the time unit, includes: When the transmission direction corresponding to the frequency domain unit includes at least one of the following, the transmission direction corresponding to the time unit is a downlink transmission direction: The transmission direction corresponding to the SSB position of the synchronous signal/physical broadcast channel signal block in the system message 1; The service cell configures a transmission direction corresponding to the SSB position indicated in the public signaling; And the transmission direction corresponding to the control resource set used for the first physical downlink control channel PDCCH public search space in the main information block.
  15. 15. The method of claim 14, wherein the first indication signaling comprises at least one of: High-level signaling; radio resource control, RRC, signaling; Dynamic signaling; System messages.
  16. 16. The method of claim 15, wherein the system message comprises at least one of full duplex uplink and downlink common configuration information and flexible duplex uplink and downlink common configuration information.
  17. 17. The method of claim 15, wherein the RRC signaling includes at least one of full duplex uplink and downlink specific configuration information and flexible duplex uplink and downlink specific configuration information.
  18. 18. A transmission direction determining apparatus, comprising: The first determining module is used for determining the transmission direction corresponding to the time unit according to the first indication signaling; Wherein the first determining module includes: The first determining submodule is used for determining a transmission direction corresponding to at least one frequency domain unit in the time unit according to the first indication signaling, wherein the transmission direction corresponding to the frequency domain unit comprises an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; The second determining submodule is used for determining the transmission direction corresponding to the time unit according to the transmission direction corresponding to the frequency domain unit, wherein the transmission direction corresponding to the time unit comprises an uplink transmission direction, a downlink transmission direction, a flexible transmission direction or a transmission direction determined according to a preset rule; Wherein the flexible transmission direction can be indicated as at least one of: an uplink transmission direction; A downlink transmission direction; flexible direction without reception and without transmission; the second determining submodule is configured to determine, when the transmission direction corresponding to the frequency domain unit includes at least one of the following, that the transmission direction corresponding to the time unit is a downlink transmission direction: The transmission direction corresponding to the SSB position of the synchronous signal/physical broadcast channel signal block in the system message 1; The service cell configures a transmission direction corresponding to the SSB position indicated in the public signaling; And the transmission direction corresponding to the control resource set used for the first physical downlink control channel PDCCH public search space in the main information block.
  19. 19. The apparatus of claim 18, wherein the first indication signaling comprises at least one of: High-level signaling; radio resource control, RRC, signaling; Dynamic signaling; System messages.
  20. 20. The apparatus of claim 19, wherein the system message comprises at least one of full duplex uplink and downlink common configuration information and flexible duplex uplink and downlink common configuration information.

Description

Transmission direction determining method and device, terminal and network side equipment Technical Field The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for determining a transmission direction, a terminal, and a network side device. Background In a flexible/full duplex (flexible/full duplex) network system, terminals without full duplex capability can only transmit or receive at the same time, but the network side can simultaneously receive and transmit, so that different terminals can transmit and receive with different frequency resources at the same time. Accordingly, the network is required to provide signaling for the terminal to configure and/or indicate the transmission directions of different frequency resources, namely downlink D, uplink U and flexible F. In order to coexist with an adjacent channel/channel (adjacency channel), reduce interference to the adjacency channel, and simultaneously in order to effectively coexist with a legacy terminal (legacy UE or a UE called Rel-18 previous version) and other terminals with different requirements on services in the same network, different frequency resources of the same time unit can be indicated as uplink, downlink or flexible, but a terminal without full duplex capability cannot determine the transmission direction of the time unit, and cannot perform corresponding downlink processing or uplink transmission. Disclosure of Invention The embodiment of the application provides a method and a device for determining a transmission direction, a terminal and network side equipment, which can solve the problem of how to determine the transmission direction of a time unit by the terminal without full duplex capability. In a first aspect, a method for determining a transmission direction is provided, including: The terminal determines a transmission direction corresponding to the time unit according to the first indication signaling, wherein the transmission direction comprises an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; Wherein the flexible transmission direction can be indicated as at least one of: an uplink transmission direction; A downlink transmission direction; Flexible direction of no reception and no transmission. In a second aspect, a method for determining a transmission direction is provided, including: The network side equipment sends a first indication signaling, wherein the first indication signaling is used for determining a transmission direction corresponding to a time unit, and the transmission direction comprises an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; Wherein the flexible transmission direction can be indicated as at least one of: an uplink transmission direction; A downlink transmission direction; Flexible direction of no reception and no transmission. In a third aspect, there is provided a transmission direction determining apparatus, including: The first determining module is used for determining a transmission direction corresponding to the time unit according to the first indication signaling, wherein the transmission direction comprises an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; Wherein the flexible transmission direction can be indicated as at least one of: an uplink transmission direction; A downlink transmission direction; Flexible direction of no reception and no transmission. In a fourth aspect, there is provided a transmission direction determining apparatus, including: The first transmission module is used for sending a first indication signaling, wherein the first indication signaling is used for determining a transmission direction corresponding to a time unit, and the transmission direction comprises an uplink transmission direction, a downlink transmission direction or a flexible transmission direction; Wherein the flexible transmission direction can be indicated as at least one of: an uplink transmission direction; A downlink transmission direction; Flexible direction of no reception and no transmission. In a fifth aspect, there is provided a terminal comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the first aspect. A sixth aspect provides a terminal, including a processor and a communication interface, where the processor is configured to determine, according to a first indication signaling, a transmission direction corresponding to a time unit, where the transmission direction includes an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction; Wherein the flexible transmission direction can be indicated as at least one of: an uplink transmi