Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Minhyun Kim

Ji Hyung Kim

Cheulsoon Kim

Sung-Hyun Moon

Junghoon Lee

Eun-Young Choi

Jeong-ho Park

Ji-Yun Seol

Jiyun Seol

Jun Hwan Lee

Yong-Hoon Lee

Jeongho Park

SungJin Kim

Juho Park

Yonghoon Lee

Seongjin Kim

Uitae Hwang

Eui-Tae Hwang

A transmission method of a base station is provided. The base station generates a physical channel or a physical signal using a physical resource block (PRB) that is a resource allocation unit in a frequency domain. The base station transmits the physical channel or the physical signal.

Transmission method and apparatus using numerology and scheduling method and apparatus using numerology

A transmission method of a base station is provided. The base station generates a first discovery signal block including a first PSS (primary synchronization signal) and a first SSS (secondary synchronization signal). The base station generates a second discovery signal block including a second PSS and a second SSS. Also, the base station transmits the first discovery signal block and the second discovery signal block.

Method and apparatus for transmitting a discovery signal, and method and apparatus for receiving a discovery signal

A method and apparatus configures a beamforming coefficient based on the signal strength information without collecting channel information by adjusting the phase of the antennas through random perturbation. An antenna control method of a base station in a wireless communication system using a beamforming technique includes measuring nreceived signal strength at nphase of at least one receive antenna, measuring (n+1)received signal strength at (n+1)phase shifted randomly from the nphase in one of forward and backward directions, and configuring a beamforming coefficient with the phase at which the received signal strength is greatest through comparison of received signal strengths. The random perturbation-based beamforming method and apparatus of the present disclosure is capable of configuring the beamforming coefficient appropriate for the normal cellular environment using a plurality analog array antenna without channel estimation overhead.

Random perturbation-based beamforming method and apparatus for use in mobile communication system

A method for performing communication in a multi-stage beam forming system includes determining statistical channel information which indicates a priority of analog beams transmitted by a base station, configuring an adaptive code book for digital beam forming, based on the statistical channel information and analog beams which the base station uses in actual communication among the analog beams, and performing communication with the base station through the digital beam forming based on the adaptive code book. A terminal includes a channel estimator configured to perform channel estimation for analog beams transmitted from a base station, a controller configure to determine statistical channel information indicating a priority of the analog beams, and configure an adaptive code book for digital beam forming based on the statistical channel information and analog beams that the base station uses in actual communication among the analog beams, and a communication unit.

Method and apparatus for performing communication in multi-stage beam forming system

Growing community of inventors

Busan, South Korea

Minhyun Kim