Patent ID: 9584300
Date: 2017-02-28
CPC Classifications: H04L,H04W

Claim:
1. A method for a user equipment (UE) to manage a transmission power for a random access in a wireless communication system, the method comprising: determining a transmission power of a first physical random access channel (PRACH) for a first cell group, the first cell group consisting of a primary cell (PCell) and zero or more secondary cells (SCells); determining a transmission power of a second PRACH for a second cell group, the second cell group consisting of one or more SCells only; and when a condition including (i) the first PRACH overlaps in time domain with the second PRACH, and (ii) a total transmission power of the first and second PRACHs exceeds a threshold is satisfied, restricting the transmission power of the second PRACH for the second cell group such that a new total transmission power of the first and second PRACHs does not exceed the threshold.