公开(公告)号：US20180198206A1

公开(公告)日：2018-07-12

申请号：US15868953

申请日：2018-01-11

Applicant: LG ELECTRONICS INC.

Inventor： Jinseok PARK ,  Song-Cheoll HONG ,  SEUNG HOON KANG ,  Jaehoon CHUNG ,  Minki AHN

IPC: H01Q3/34 ,  H01P1/18

CPC classification number: H01Q3/34 ,  H01P1/18 ,  H03H11/20

Abstract: Provided is a phase shifting device including a first balun outputting first and second differential input signals, an I/Q generator outputting first to fourth phase signals based on the first and second differential input signals, a control circuit outputting a first control signal, a second control signal, a plurality of in-phase select signals, and a plurality of quadrature select signals, a current source circuit including a first source transistor outputting an in-phase current according to the first control signal and a second source outputting a quadrature current according to the second control signal, a vector sum circuit outputting first and second differential output signals based on the first to fourth phase signals according to the plurality of in-phase select signals and the plurality of quadrature select signals and including a plurality of sub-vector sum circuits, and a second balun outputting an output signal.

公开(公告)号：US20170367114A1

公开(公告)日：2017-12-21

申请号：US15453771

申请日：2017-03-08

Applicant: LG ELECTRONICS INC.

Inventor： Minki AHN ,  Jaehoon CHUNG ,  Kilbom LEE ,  Kyuseok KIM

IPC: H04W72/12 ,  H04L5/00 ,  H04B7/04

CPC classification number: H04L5/0048 ,  H04B7/0469 ,  H04B7/0617 ,  H04L5/0023 ,  H04L5/0091 ,  H04L27/26

Abstract: Provided are a method and an apparatus for performing communication based on hybrid beamforming in a wireless communication system. Specifically, a user equipment (UE) transmits a dedicated scheduling request to a base station (BS). The dedicated scheduling request indicates a first scheduling request that is a request to transmit beam state information, multiplexed on an uplink data channel, or a second scheduling request that is a request to allocate a resource for a reference signal for beam refinement information. When the dedicated scheduling request indicates the first scheduling request, the UE receives an uplink grant including a response to the first scheduling request from the BS. The UE feeds the BSI back multiplexed on the uplink data channel to the BS.