Samsung Electronics Co., Ltd.

Snu Rdb Foundation

Hui Won Je

Young Jun Hong

Junho Lee

Hyukjoon Kwon

Bruno Clerckx

Dongwoon Bai

Jaein Kim

Federico Penna

Hye Won Lee

Sung Hyun Choi

The disclosure provides a method of providing implicit channel state information (CSI) feedback from a user equipment (UE). The method includes determining a precoding matrix indicator (PMI) selection decision metric, selecting one of a sub-band (SB) linear combination coefficient (LCC) selection method, a wideband (WB) LCC selection method, or a sub-band group (SBG) LCC selection method, based on the determined PMI selection decision metric, determining, using the selected LCC selection method, PMI indices based on sub-bands configured by a base station, and transmitting the determined PMI indices to the base station.

Method and apparatus for selection of linear combination coefficients for precoding in frequency-selective channels

Provided is a coordinated communication method and apparatus that may perform coordinated communication based on long-term channel information, for each sub-band. Base stations may exchange scheduling information of each sub-band with each other to determine a priority among the base stations, and may perform rescheduling for each sub-band based on the determined priority. The base stations may obtain the long-term channel information, and thus may reduce overhead occurring with exchanging of information between a base station and a terminal or between base stations, and may decrease damage due to a delay of channel information associated with a terminal.

Method and apparatus for coordinated multi-point communication for each sub-band based on long-term channel state information

Growing community of inventors

Gwacheon-si, South Korea

Hui Won Je