14.1.3 UE procedure for determining resource block pool and subframe pool for sidelink transmission mode 2

36.2133GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Physical layer proceduresRelease 17TS

For a PSCCH period associated with the PSCCH resource configuration (determined in Clause 14.2.3) which is also associated with the PSSCH resource configuration, the UE determines a PSSCH pool consisting of a subframe pool and resource block pool as follows.

– For TDD, if the parameter tdd-Config-r12 is indicated by the PSCCH resource configuration, the TDD UL/DL configuration used for determining the subframe pool is given by the parameter tdd-Config-r12, otherwise, the TDD UL/DL configuration used for determining the subframe pool is given by the UL/DL configuration (i.e. parameter subframeAssignment) for the serving cell.

– Within the PSCCH period, the uplink subframes with subframe index greater than or equal to are denoted by arranged in increasing order of subframe index, where is described in Clause 14.2.3 and is the offsetIndicator-r12 indicated by the PSSCH resource configuration, where denotes the number of uplink subframes within the PSCCH period with subframe index greater than or equal to .

– A bitmap is determined using, for , where and are the bitmap and the length of the bitmap indicated by subframeBitmap-r12, respectively.

– A subframe () belongs to the subframe pool if . The subframes in the subframe pool are denoted by arranged in increasing order of subframe index and denotes the number of subframes in the subframe pool.

– A PRB with index () belongs to the resource block pool if or if , where S1, S2, and M denote the prb-Start-r12, prb-End-r12 and prb-Num-r12 indicated by the PSSCH resource configuration respectively.

– The resource blocks in the resource block pool are denoted by arranged in increasing order of resource block indices and is the number of resource blocks in the resource block pool.

14.1.4 UE procedure for determining subframe pool for sidelink transmission mode 1

For a PSCCH period associated with the PSCCH resource configuration (described in Clause 14.2.3) which is also associated with the PSSCH resource configuration, the UE determines a PSSCH pool consisting of a subframe pool as follows.

– For TDD, if the parameter tdd-Config-r12 is indicated by the PSCCH resource configuration, the TDD UL/DL configuration used for determining the subframe pool is given by the parameter tdd-Config-r12, otherwise, the TDD UL/DL configuration used for determining the subframe pool is given by the UL/DL configuration (i.e. parameter subframeAssignment) for the serving cell.

– Each uplink subframe with subframe index greater than or equal to belongs to the subframe pool for PSSCH, where and are described in Clause 14.2.3.

– The subframes in the subframe pool for PSSCH are denoted by arranged in increasing order of subframe index and denotes the number of subframes in the subframe pool.