公开(公告)号：EP4156803A1

公开(公告)日：2023-03-29

申请号：EP22193193.4

申请日：2022-08-31

Applicant: Apple Inc.

Inventor： TRIPATHI, Pranav ,  SHIRKE, Dhiraj J. ,  BALSANIA, Imran Haider ,  BALASUBRAMANIAN, Sanjeevi

IPC: H04W52/50 ,  H04W74/00

Abstract: A user equipment (UE) is configured to initiate a two-step random access channel (RACH) procedure to synchronize with a base station, initiate a fallback four-step RACH procedure after the two-step RACH procedure, configure a random access preamble transmission for the four-step RACH procedure, wherein configuring the random access preamble transmission comprises deriving a physical random access channel (PRACH) transmit power parameter value based on a parameter used to perform a transmission during the two-step RACH procedure and transmit the random access preamble for the four-step RACH procedure to the base station.