Resource selection for multiple sidelink processes
A method and apparatus for resource selection for multiple hybrid automatic repeat request (HARQ) processes in a wireless communication system is provided. A wireless device, which is configured with one or more resource pools for autonomous resource selection, determines a number of sidelink processes, and generates a selected sidelink grant for the determined number of the sidelink processes. The wireless device triggers a sidelink resource reselection based on a resource mapped to a specific sidelink process from among the sidelink processes, and reselects sidelink resources mapped to the specific sidelink process from the selected sidelink grant.
1 . A method, comprising:
obtaining, by a first device, a configuration of one or more resource pools for autonomous resource selection;
selecting, by the first device, a resource pool for a logical channel from among the one or more resource pools based on data that is available on the logical channel:
determining, by the first device, the number of a plurality of sidelink processes:
generating, by the first device, a selected sidelink grant shared among the plurality of sidelink processes;
triggering, by the first device, a sidelink resource reselection based on a resource mapped to a specific sidelink process from among the plurality of sidelink processes; and
reselecting, by the first device, sidelink resources mapped to the specific sidelink process from the selected sidelink grant, wherein the sidelink resources include the resource,
wherein the number of the plurality of sidelink processes is determined within a maximum number of sidelink processes, and
wherein the maximum number of sidelink processes is independently configured per at least one of level of a priority, QoS requirement of the logical channel, a CBR, or a SL-RSRP of the resource pool.
2 . The method of claim 1 , wherein the number of the plurality of sidelink processes is determined based on at least one of a priority or quality of service (QoS) requirement of the logical channel.
3 . The method of claim 1 , wherein the number of the plurality of sidelink processes is determined based on at least one of a channel busy ratio (CBR) or a sidelink reference signal received power (SL-RSRP) of the resource pool.
4 . The method of claim 1 , wherein at least one of the selected resource pool or the determined number of plurality of sidelink processes is informed to a network.
5 . The method of claim 1 , wherein other sidelink resources mapped to other sidelink processes from among the plurality of sidelink processes are not reselected.
6 . The method of claim 1 , wherein a hybrid automatic repeat request (HARQ) feedback for the logical channel is disabled, and
wherein the resource pool is at least one of a resource pool where a logical channel configured with a HARQ feedback enabled is not allowed or a resource pool of which CBR is lower than CBR of any other resource pools.
7 . The method of claim 1 , wherein a first device is in communication with at least one of a mobile device, a network, or autonomous vehicles other than the first device.
8 . A first device, comprising:
at least one transceiver:
at least one processor; and
at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, cause the first device to perform operations comprising:
obtaining a configuration of one or more resource pools for autonomous resource selection:
selecting a resource pool for a logical channel from among the one or more resource pools based on data that is available on the logical channel:
determining the number of a plurality of sidelink processes:
generating a selected sidelink grant shared among the plurality of sidelink processes:
triggering a sidelink resource reselection based on a resource mapped to a specific sidelink process from among the plurality of sidelink processes; and
reselecting sidelink resources mapped to the specific sidelink process from the selected sidelink grant, wherein the sidelink resources include the resource,
wherein the number of the plurality of sidelink processes is determined within a maximum number of sidelink processes, and
wherein the maximum number of sidelink processes is independently configured per at least one of level of a priority, QoS requirement of the logical channel, a CBR, or a SL-RSRP of the resource pool.
9 . The first device of claim 8 , wherein the number of the plurality of sidelink processes is determined based on at least one of a priority or quality of service (QoS) requirement of the logical channel.
10 . The first device of claim 8 , wherein the number of the plurality of sidelink processes is determined based on at least one of a channel busy ratio (CBR) or a sidelink reference signal received power (SL-RSRP) of the resource pool.
11 . The first device of claim 8 , wherein at least one of the selected resource pool or the determined number of the plurality of sidelink processes is informed to a network.
12 . The first device of claim 8 , wherein other sidelink resources mapped to other sidelink processes from among the plurality of sidelink processes are not reselected.