Resource selection method and apparatus, device and storage medium
View Patent ↗Provided in the present application are a resource selection method and apparatus for use in a sidelink communication system. The resource selection method includes: a first terminal receives sidelink data from a second terminal on a plurality of carriers; and the first terminal may select a resource pool for transmitting a PSFCH from the plurality of carriers where the sidelink data is located, or all the plurality of carriers available for sidelink transmission.
1 . A resource selection method, comprising:
receiving, by a first terminal, sidelink data from a second terminal on multiple carriers; and
determining, by the first terminal, a resource pool for transmitting a physical sidelink feedback channel (PSFCH) from the multiple carriers, which comprises:
determining, by the first terminal, the resource pool for transmitting the PSFCH from the multiple carriers according to PSFCH configuration information, wherein the PSFCH configuration information comprises information for configuring a PSFCH format, and the PSFCH format comprises at least one of multiple PSFCH formats, and any two PSFCH formats of the multiple PSFCH formats are different in at least one of: a number of time domain symbols occupied by the PSFCH; or a maximum number of bits carried by the PSFCH.
2 . The method of claim 1 , wherein determining the resource pool for transmitting the PSFCH from the multiple carriers further comprises:
determining, by the first terminal, the resource pool for transmitting the PSFCH from the multiple carriers according to at least one of: a resource pool in which the sidelink data is located, measurement information of resource pools or first indication information,
wherein the first indication information indicates at least one resource pool for transmitting the PSFCH.
3 . The method of claim 2 , wherein determining, by the first terminal according to the resource pool in which the sidelink data is located, the resource pool for transmitting the PSFCH from the multiple carriers comprises:
obtaining, by the first terminal, at least one resource pool in which a physical sidelink control channel (PSCCH) or physical sidelink shared channel (PSSCH) received on the multiple carriers from the second terminal is located; and
determining, by the first terminal, the resource pool for transmitting the PSFCH from the at least one resource pool.
4 . The method of claim 3 , wherein determining, by the first terminal, the resource pool for transmitting the PSFCH from the at least one resource pool comprises:
determining, by the first terminal according to priority information, the resource pool for transmitting the PSFCH from the at least one resource pool; or,
determining, by the first terminal according to a chronological order of the received PSCCH or PSSCH, the resource pool for transmitting the PSFCH from the at least one resource pool.
5 . The method of claim 2 , wherein the measurement information of the resource pools comprises channel busy ratios (CBRs) of the resource pools, and wherein determining, by the first terminal according to the measurement information of the resource pools, the resource pool for transmitting the PSFCH from the multiple carriers comprises:
selecting, by the first terminal according to the CBRs of the resource pools, the resource pool for transmitting the PSFCH from a resource pool set of the multiple carriers in an order of CBRs from low to high.
6 . The method of claim 2 , wherein the measurement information of the resource pools comprises channel busy ratios (CBRs) of the resource pools; and wherein determining, by the first terminal according to the measurement information of the resource pools, the resource pool for transmitting the PSFCH from the multiple carriers comprises:
determining, by the first terminal according to the CBRs of the resource pools, at least one resource pool with a CBR less than a CBR threshold from a resource pool set of the multiple carriers; and
selecting, by the first terminal, a resource pool for transmitting the PSFCH from the at least one resource pool.
7 . The method of claim 2 , wherein the first indication information comprises index information, and wherein determining, by the first terminal according to the first indication information, the resource pool for transmitting the PSFCH from the multiple carriers comprises:
selecting, by the first terminal, a resource pool corresponding to the index information as the resource pool for transmitting the PSFCH.
8 . The method of claim 1 , wherein the sidelink feedback information corresponding to the sidelink data received by the first terminal from the second terminal on the multiple carriers is carried on one PSFCH, or carried on different PSFCHs.
9 . The method of claim 1 , wherein a resource pool in which first sidelink data received by the first terminal from the second terminal on the multiple carriers is located and a resource pool in which a PSFCH corresponding to the first sidelink data is transmitted are different resource pools, and/or a carrier on which the first sidelink data is located and a carrier on which the PSFCH corresponding to the first sidelink data is transmitted are different carriers,
wherein, the first sidelink data is sidelink data received by the first terminal from the second terminal on one of the multiple carriers.
10 . The method of claim 4 , wherein the determining, by the first terminal according to priority information, the resource pool for transmitting the PSFCH from the at least one resource pool comprises:
determining, by the first terminal according to priority information of the sidelink data, the resource pool for transmitting the PSFCH from the at least one resource pool; or,
wherein the determining, by the first terminal according to a chronological order of the received PSCCH or PSSCH, the resource pool for transmitting the PSFCH from the at least one resource pool comprises:
determining, by the first terminal, a resource pool in which the first received sidelink data is located as the resource pool for transmitting the PSFCH, or
determining, by the first terminal, a resource pool in which the last received sidelink data is located as the resource pool for transmitting the PSFCH.
11 . The method of claim 7 , wherein the first indication information is contained in the sidelink data.
12 . A resource selection apparatus, comprising:
a processor; and
a memory for storing a computer program,
wherein the processor is configured to execute the computer program to perform the following operations:
receiving sidelink data from a second terminal on multiple carriers; and
determining a resource pool for transmitting a physical sidelink feedback channel (PSFCH) from the multiple carriers,
wherein the processor is configured to execute the computer program to perform the following operations:
determining the resource pool for transmitting the PSFCH from the multiple carriers according to PSFCH configuration information, wherein the PSFCH configuration information comprises information for configuring a PSFCH format, and the PSFCH format comprises at least one of multiple PSFCH formats, and any two PSFCH formats of the multiple PSFCH formats are different in at least one of: a number of time domain symbols occupied by the PSFCH; or a maximum number of bits carried by the PSFCH.
13 . The apparatus of claim 12 , wherein the processor is further configured to: determine the resource pool for transmitting the PSFCH from the multiple carriers according to at least one of: a resource pool in which the sidelink data is located, measurement information of resource pools or first indication information;
wherein the first indication information indicates at least one resource pool for transmitting the PSFCH.
14 . The apparatus of claim 13 , wherein the processor is further configured to: obtain at least one resource pool in which a physical sidelink control channel (PSCCH) or physical sidelink shared channel (PSSCH) received on the multiple carriers from the second terminal is located, and determine the resource pool for transmitting the PSFCH from the at least one resource pool.
15 . The apparatus of claim 14 , wherein the processor is further configured to:
determine, according to priority information, the resource pool for transmitting the PSFCH from the at least one resource pool; or,
determine, according to a chronological order of the received PSCCH or PSSCH, the resource pool for transmitting the PSFCH from the at least one resource pool.
16 . The apparatus of claim 13 , wherein the measurement information of the resource pools comprises channel busy ratios (CBRs) of the resource pools; and the processor is further configured to:
select, according to the CBRs of the resource pools, a resource pool for transmitting the PSFCH from a resource pool set of the multiple carriers in an order of CBRs from low to high.
17 . The apparatus of claim 16 , wherein the measurement information of the resource pools comprises channel busy ratios (CBRs) of the resource pools, and the processor is further configured to:
determine, according to the CBRs of the resource pools, at least one resource pool with a CBR less than a CBR threshold from a resource pool set of the multiple carriers, and select a resource pool for transmitting the PSFCH from the at least one resource pool.
18 . The apparatus of claim 13 , wherein the first indication information comprises index information, and the processor is further configured to:
select a resource pool corresponding to the index information as the resource pool for transmitting the PSFCH.
19 . The apparatus of claim 12 , wherein the sidelink feedback information corresponding to the sidelink data received from the second terminal on the multiple carriers is carried on one PSFCH, or carried on different PSFCHs.
20 . The apparatus of claim 12 , wherein a resource pool in which first sidelink data received from the second terminal on the multiple carriers is located and a resource pool in which a PSFCH corresponding to the first sidelink data is transmitted are different resource pools, and/or a carrier on which the first sidelink data is located and a carrier on which the PSFCH corresponding to the first sidelink data is transmitted are different carriers; and
wherein, the first sidelink data is sidelink data received from the second terminal on one of the multiple carriers.