Method and device for allocating resources in NR V2X
A method by which a first device performs sidelink transmission and a device for supporting same are provided. The method can comprise the steps of: receiving, from a second device, assistance information related to one or more resources for sidelink communication; selecting a transmission resource from among the one or more resources on the basis of the assistance information; and performing sidelink transmission on the transmission resource.
1. A method for performing, by a first device, sidelink (SL) transmission, the method comprising:
receiving, from a second device, assistance information related to one or more resources for SL communication;
selecting a transmission resource from among the one or more resources based on the assistance information; and
performing the SL transmission on the transmission resource,
wherein the assistance information includes information regarding one or more resources with high reference signal received power (RSRP) determined by the second device, and
wherein the transmission resource is selected from among resources other than the one or more resources with high RSRP.
2. The method of claim 1 , wherein the assistance information includes channel state information for the one or more resources measured by the second device.
3. The method of claim 2 , further comprising:
measuring a channel state for the one or more resources.
4. The method of claim 3 , further comprising:
adjusting channel state information for the one or more resources measured by the first device based on the assistance information.
5. The method of claim 4 , wherein the transmission resource is selected based on the adjusted channel state information for the one or more resources.
6. The method of claim 1 , wherein the assistance information includes information regarding one or more resources, determined by the second device, to be used by the second device or other devices.
7. The method of claim 1 , wherein the assistance information includes information regarding one or more resources related to a specific service.
8. The method of claim 7 , wherein the specific service includes at least one of a service related to a high priority, a service related to a high reliability, or a service related to a low delay.
9. The method of claim 8 , wherein the transmission resource is selected from among resources other than the one or more resources related to the specific service.
10. A first device configured for performing sidelink (SL) transmission, the first device comprising:
one or more memories storing instructions;
one or more transceivers; and
one or more processors operably connected to the one or more memories and the one or more transceivers, wherein the one or more processors are configured to execute the instructions to perform operations comprising:
receiving, from a second device, assistance information related to one or more resources for SL communication;
selecting a transmission resource from among the one or more resources based on the assistance information; and
performing the SL transmission on the transmission resource,
wherein the assistance information includes information regarding one or more resources with high reference signal received power (RSRP) determined by the second device, and
wherein the transmission resource is selected from among resources other than the one or more resources with high RSRP.