View source for DATA TRANSMISSION IN RACH PROCEDURES: abstract simplified (18009253)

Methods and devices for wireless communication are disclosed in this document. The apparatus, which can be a user equipment (UE) or a base station, is able to determine whether to enter a two-step RACH (Random Access Channel) procedure while in an RRC (Radio Resource Control) inactive state. If it decides to proceed with the two-step RACH procedure, the apparatus can transmit uplink data within a payload of a message A (MsgA). This payload contains at least the uplink data. The apparatus then monitors for a message B (MsgB) as part of the two-step RACH procedure. Once the MsgB is received, it includes a fallback indication that contains a fallback RAR (Random Access Response). In response to receiving the MsgB, the apparatus retransmits the payload of the MsgA.