US Patent No. 10,368,354

CHANNEL STATE INFORMATION FEEDBACK METHOD IN MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR


Patent No. 10,368,354
Issue Date July 30, 2019
Title Channel State Information Feedback Method In Multi-antenna Wireless Communication System And Apparatus Therefor
Inventorship Youngtae Kim, Seoul (KR)
Kijun Kim, Seoul (KR)
Jonghyun Park, Seoul (KR)
Bonghoe Kim, Seoul (KR)
Hyungtae Kim, Seoul (KR)
Assignee LG Electronics Inc., Seoul (KR)

Claim of US Patent No. 10,368,354

1. A method for feeding back channel state information (CSI) by a user equipment (UE) in a wireless communication system supporting a 3-dimensional multiple-input multiple-output (3D-MIMO) antenna, the method comprising:receiving, through radio resource control (RRC) signaling, information about N beams (where N is a natural number) precoded for specific antennas among multiple antennas constituting the 3D-MIMO antenna and information about a number M of interference beams (where M is a natural number, M?N?1);
selecting a specific beam for generating the CSI from among the N beams;
determining M beams among the remaining beams in descending order of the difference from the index of the specific beam; and
generating the CSI for the specific beam using the interference determined based on the M beams.