Patent ID: 8737334
Filing Date: 2014-05-27
Classification: H04L,H04W

Abstract:
1. A method for transmitting a sounding reference signal of a user equipment in an uplink CoMP (Cooperative Multi-Point) system, the method for transmitting a sounding reference signal comprising: receiving parameters for transmitting a sounding reference signal from a serving base station included in a CoMP set, wherein the parameters include basis sequences and timing control values for at least one neighbor base station included in the CoMP set, and wherein the timing control values are set in symbol units; allocating a resource for the sounding reference signal based upon the parameters; and transmitting the sounding reference signal to the service base station and to the at least one neighbor base station in accordance with the allocated resource, wherein the basis sequences for the sounding reference signal are differently determined for each base station included in the CoMP set, wherein the sounding reference signal is transmitted at different time units, wherein the different time units are determined by applying the timing control values for at least one neighbor base station included in the CoMP set, wherein the timing control values are respectively set corresponding to reception timing of the at least one neighbor base station, and wherein the reception timing of the at least one neighbor base station is respectively aligned to a sounding reference signal reception timing related with another user equipment belonging to the at least one neighbor base station.