Method for estimating channel state in wireless communication system and apparatus therefor

摘要

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for reporting a channel state by a terminal to a serving base station in a wireless communication system, wherein extra channel state information is reported to enable the serving base station to estimate the channel state more accurately. When the base station estimates the channel state with the terminal, the channel state information received from the terminal, the extra channel state information, and traffic information of neighboring base stations are collectively considered to estimate the channel state with the terminal, thereby enabling estimation of the channel state with improved reliability and accuracy.

主权项

1. A method of reporting a channel state by a user equipment to a serving eNode B in a wireless communication system, the method comprising:
receiving, by the user equipment, a first interference signal from a first eNode B group, wherein a first channel state information is calculated based on first interference strength corresponding to the first interference signal; receiving, by the user equipment, a second interference signal from a second eNode B group based on an identification information of an eNode B belonging to the second eNode B group, wherein second interference strength corresponds to the second interference signal, wherein a second channel state information is calculated based on a ratio between the first interference strength and the second interference strength; and transmitting, by the user equipment, the first channel state information and the second channel information to the serving eNode B, wherein the second channel state information is used for correcting the first channel state information, and wherein the serving eNode B estimates the channel state based on the corrected first channel state information.