Sidelink communication method and apparatus

Abstract

This invention provides a sidelink communication method and device for transmitting information between terminals. [Solution] A sidelink communication method comprising: a first terminal receiving a sidelink grant resource from a base station; the first terminal performing listen-before-talk (LBT) detection on the sidelink grant resource; and, if there is data to be transmitted in the process corresponding to the sidelink grant resource and an LBT failure occurs, the first terminal feeding back a negative acknowledgment (NACK) to the base station.

Claims

1. Sidelink communication method The first terminal receives a sidelink grant resource from the base station, The first terminal performs Listen Before Talk (LBT) detection on the sidelink grant resource, If there is data to be transmitted in the process corresponding to the sidelink grant resource, and an LBT failure occurs, the first terminal provides feedback to the base station with a negative acknowledgment (NACK), Methods that include...

2. The above method further, If there is no data to be sent to the process corresponding to the sidelink grant resource, the first terminal provides feedback to the base station with an acknowledgment (ACK). Includes. The method according to claim 1.

3. The above method further, The first terminal receives configuration information from the base station, The aforementioned configuration information is used to detect consistent LBT failures that have occurred in the first resource pool. The configuration information is associated with the first carrier or the first resource pool, and The first resource pool includes steps belonging to the first carrier, The first terminal transmits the first instruction information to the base station. The first instruction information includes a step indicating the first resource pool where the consistent LBT failure occurred, The method according to claim 1, including the method described in claim 1.

4. The sidelink grant is indicated by the base station using downlink control information (DCI), and The above method further, The first terminal provides the side link grant to the media access control (MAC) layer, The MAC layer acquires a transmission block (TB) based on the sidelink grant, transmits the TB to the physical (PHY) layer, and waits for the PHY layer to transmit the TB. The PHY layer performs LBT detection based on the unlicensed spectrum before the sidelink grant arrives. The method according to claim 1, including the method described in claim 1.

5. The above method further, The first terminal transmits terminal support information to the base station, and the first terminal requests the base station to perform a sidelink configuration grant. The method according to claim 1, including the method described in claim 1.

6. Sidelink communication method, The base station transmits the sidelink grant resource to the first terminal, If there is data to be transmitted in the process corresponding to the sidelink grant resource, and an LBT failure occurs, the base station receives a negative acknowledgment (NACK) from the first terminal. Methods that include...

7. The above method further, If there is no data to be transmitted in the process corresponding to the sidelink grant resource, the base station receives an acknowledgment (ACK) from the first terminal. The method according to claim 6, including the method described in claim 6.

8. The above method further, The base station transmits configuration information to the first terminal. The aforementioned configuration information is used to detect consistent LBT failures that have occurred in the first resource pool. The configuration information is associated with the first carrier or the first resource pool, and The first resource pool includes steps belonging to the first carrier, The base station receives first instruction information from the first terminal, The first instruction information includes a step indicating the first resource pool where the consistent LBT failure occurred, The method according to claim 6, including the method described in claim 6.

9. The above method further, The steps include: receiving terminal support information from the first terminal via the base station, and requesting the base station to perform a sidelink configuration grant; The method according to claim 6, including the method described in claim 6.

10. An apparatus configured to perform the method described in any one of claims 1 to 9.

11. It is a device, The device includes a processor, memory, and instructions stored in the memory and executable on the processor. When the aforementioned instruction is executed, the device becomes capable of performing the method according to any one of claims 1 to 9. Device.

12. A computer-readable storage medium containing instructions, When the instruction is executed on the computer, the computer becomes capable of performing the method according to any one of claims 1 to 9. Computer-readable storage medium.

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