Patent ID: 9544111
Date: 2017-01-10
CPC Classifications: H04L,H04W

Claim:
1. A method for random access power control at a first base station in a coordinated multi-point transmission/reception (CoMP) system, the method comprising: setting, by the first base station, random access preamble transmission power required for random access between a second base station, different from the first base station, and a User Equipment (UE); and transmitting, by the first base station to the UE, a downlink signal including information associated with the set random access preamble transmission power and information indicating the random access to the second base station such that the UE transmits a random access preamble to the second base station based on the set random access preamble transmission power information included in the downlink signal, wherein at least one of a Non-zero Channel State Information Reference Signal (CSI-RS) resource, a zero CSI-RS resource, and an Interference Measurement Resource (IMR) included in the downlink signal transmitted by the first base station, is used for calculating a path loss estimation value associated with the second base station.