Method for transceiving reference signal in comp operation in wireless communication system that supports an MU-MIMO scheme

摘要

Disclosed is a method for efficiently transceiving information required for implementing a multi-cell-based CoMP MU-MIMO scheme. For this purpose, a base station which performs CoMP operation generates: (A) a reference signal sequence on the basis of a specific base station; or generates (B) the same reference signal sequence on the basis of a CoMP ID, and transmits the generated sequence to user equipment. To support an MU-MIMO scheme and to perform a joint processing method, the base station must additionally transmit CoMP reference signal sequence information, frequency shift information, etc. to the user equipment in said (A) case, and generates a CoMP reference signal on the basis of a preset CoMP set ID and transmits the generated signal to the user equipment in said (B) case.

主权项

1. A method of receiving a coordinated multi-point (CoMP) reference signal in a wireless communication system that supports a multiple user-Multiple Input Multiple Output (MU-MIMO) scheme in a CoMP set for performing a CoMP operation, the method comprising:
receiving, at a specific user equipment (UE), reference signal information of a reference base station (BS) within the CoMP set or cell identification (cell ID) information of the reference base station from a base station to which the specific user equipment (UE) belongs in the CoMP set; acquiring, at the specific user equipment, a reference signal of the reference base station using the received reference signal information of the reference base station or cell ID information of the reference base station; and performing channel estimation or demodulating received data using the acquired reference signal of the reference base station and a reference signal of the base station to which the specific UE belongs, wherein the reference base station is one base station, among a plurality of base stations, that has the most UEs performing the CoMP operation.