16.9.3.1 General

For NR sidelink communication, the UE can operate in two modes as specified in 5.7.2 for resource allocation in sidelink:

• Scheduled resource allocation, characterized by:
• The UE needs to be RRC_CONNECTED in order to transmit data;
• NG-RAN schedules transmission resources.
• UE autonomous resource selection, characterized by:
• The UE can transmit data when inside NG-RAN coverage, irrespective of which RRC state the UE is in, and when outside NG-RAN coverage;
• The UE autonomously selects transmission resources from resource pool(s).

For NR sidelink communication, the UE performs sidelink transmissions only on a single carrier.