In an embodiment of the present disclosure, the following may be assumed for PSCCH/PSSCH/PFSCH transmission on SL, for the convenience of description. A capability for each transmission scheme may vary according to a carrier or service type corresponding to the SL. For example, TB-based transmission and HARQ-ACK feedback may be available for a specific carrier or service type. For example, CBG-based transmission and HARQ-ACK feedback may be available for another specific carrier or service type. For example, a MIMO operation (i.e., the maximum number of supported TBs) may be different for each carrier or service type.
3. UCI Transmission Method for SL Transmission
When the UE transmits UCI for SL transmission to the base station, it is necessary to align transmission positions between the UE and the base station, for transmission and reception without ambiguity. The following is more specific examples of setting a UCI transmission timing.