METHOD FOR TRANSMITTING/RECEIVING A COMP REFERENCE SIGNAL

摘要

Disclosed is a method for transmitting a CoMP reference signal for accurate channel estimation. The CoMP reference signal to be transmitted to a terminal which performs a CoMP operation in a multi-cell environment is a cell-specific reference signal or a CoMP-zone-specific reference signal. A method for transmitting the cell-specific reference signal uses an ID of a CoMP set constituted by cells that perform a CoMP operation, or does not apply a frequency shift value while using the ID of a relevant cell, or uses an ID of a serving cell or a frequency shift value of the serving cell. The cell-specific reference signal is transmitted using a preset specific resource region. A method for transmitting the CoMP-zone-specific reference signal is configured such that the pattern of the sequence of CoMP reference signals varies in each of the CoMP zones, and the pattern can be set in advance. In addition, the reference signal is multiplexed and transmitted using an orthogonal code resource in the event that reference signal is transmitted to a plurality of terminals using the same CoMP zone.

主权项

1. A method of generating reference signals by a base station in a wireless communication system, the method comprising:
generating a sequence of a first reference signal using a physical cell identifier of the base station; transmitting, to a first user equipment (UE), a message including mode information indicating a first mode for a coordinated multi-point (CoMP) operation and a predetermined identifier being different from the physical cell identifier of the base station; and generating a sequence of a second reference signal for the first UE using the predetermined identifier instead of the physical cell identifier of the base station.