Method for feedback of correlation of beams in wireless communication system and user equipment

Abstract

A method of beam information feedback in a wireless communication system is disclosed including transmitting, from a base station (BS) to user equipment (UE), reference signals using multiple beams, and transmitting, from the UE to the BS, first feedback information that indicates at least one of a first correlation level between a pair of beams within each of beam groups and a second correlationlevel between a pair of the beam groups. The multiple beams are grouped into the beam groups.

Description

technical field [0001] The present invention generally relates to a method for feedback of correlation of beams in a wireless communication system and user equipment reporting the correlation to a base station. Background technique [0002] For efficient scheduling in a wireless communication system, a transmitter (eg, base station (BS)) should acquire a correlation level of beams observed at a receiver (eg, user equipment (UE)) side. By obtaining the correlation level, the BS can combine beams with high correlation to provide better coverage and allocate beams with low correlation to different users to avoid inter-user interference. It is disclosed that the UE can report beam measurement results in groups. For example, multiple beams may be divided into groups and reported separately. [0003] However, for the BS, there is still uncertainty about the level of correlation between different beams within a group or between any beams between different groups of beams. [000...

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Problems solved by technology

[0003] However, for the BS, there is still uncertainty about the level of correlation between different beams within a group or between any beams between different beam groups

[0004] Also, in conventional techniques, group information cannot indicate correlation level feedback information for flexible and intelligent scheduling in BS

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