Patent ID: 11870571
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A method for performing wireless communication by a first device, the method comprising:
obtaining a set of physical resource blocks (PRBs) in a resource pool for physical sidelink feedback channel (PSFCH) transmission;
allocating, for a number of sub-channels for the resource pool and a number of physical sidelink shared channel (PSSCH) slots related to a PSFCH slot, M PRBs including m-th to n-th PRBs from the set of PRBs to an i-th slot among the PSSCH slots related to the PSFCH slot and a j-th sub-Channel,
wherein m and n are obtained based on:

m=(i+j·N)·M 

n=(i+1+j·N·M−1

wherein N is a PSFCH period, M is a positive integer, i is an integer greater than or equal to zero and less than N, and j is an integer greater than or equal to zero and less than the number of sub-channels for the resource pool;
receiving, based on a slot and at least one sub-channel, a PSSCH from a second device;
determining, based on the allocation related to the PSSCH, a number of PSFCH resources available for multiplexing hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information in the PSFCH transmission; and
determining, among the PSFCH resources, an index of a PSFCH resource for the PSFCH transmission in response to the reception of the PSSCH, based on a source identifier (ID) of the second device.