Method by which terminal transmits and receives signal in multi cell-based wireless communication system, and device for same

摘要

Disclosed is a method by which a terminal transmits and receives a signal in a multi cell-based wireless communication system. Particularly, the method comprises the steps of: transmitting, to a serving cell, capability information in which the number of supportable channel status information (CSI) processes is set to zero; receiving, from the serving cell, information on a neighboring cell through an upper layer signal as a response to the capability information; receiving a cell-specific reference signal from the neighboring cell; reporting, to the serving cell, the CSI estimated on the basis of the cell-specific reference signal; and receiving, from the neighboring cell, a user equipment specific reference signal and a data channel on the basis of the CSI.

主权项

1. A method for transmitting and receiving a signal by a user equipment in a multi-cell based wireless communication system, the method comprising:
requesting a coordinated multi point (CoMP) transmission by transmitting, to a serving cell, capability information indicating a number of supportable channel status information (CSI) processes set to 0, wherein the number of supportable CSI processes set to 0 indicates that the user equipment wishes to receive a data channel from a neighboring cell; receiving information about the neighboring cell through a higher layer from the serving cell as a response to the capability information; receiving a cell-specific reference signal from the neighboring cell; reporting CSI estimated based on the cell-specific reference signal to the serving cell, wherein the CSI reported to the serving cell is transferred to the neighboring cell; and receiving a user equipment specific reference signal and the data channel based on the CSI from the neighboring cell, wherein a maximum value of a rank for the data channel is limited to a number of antenna ports of the cell-specific reference signal, and wherein the capability information indicating the number of supportable CSI processes is supportedCSI-Proc-r11 parameter.