Methods and apparatus for handling multiple RACH procedures in wireless communication system

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes detecting triggering of a first random access channel (RACH) procedure running on a primary stack at the UE upon detection of a RACH trigger condition on the primary stack, while the UE is connected to at least one cell, detecting triggering of a second RACH procedure while the first RACH procedure is ongoing in the UE, wherein the second RACH procedure is different from the first RACH procedure, enabling a dual active protocol stack (DAPS) capability to initiate a secondary stack for handling the second RACH procedure, performing the first RACH procedure on the primary stack and the second RACH procedure on the secondary stack, simultaneously, and disabling the secondary stack upon successful completion of the second RACH procedure.

Dependencies are inferred from the claim text.