BUFFER STATUS REPORTING IN 5G NR-THINGS SIDELINK COMMUNICATIONS

Systems and methods of providing a BSR from a tUE to a nUE are generally described. Contents of different types of BSRs are described, including a BSR-in-ACK, in which the BSR is transmitted in a HARQ ACK/NACK, and a BSR-in-PDU, in which the BSR is transmitted in a PDU or random access process. The BSR has one or more fields. Each field indicates the range for a different type of URLLC and non-URLLC data buffered for transmission to the nUE. Triggers and configurations for BSR transmission and trigger cancelation are provided to the tUE via RRC signaling.