公开(公告)号：US20220382117A1

公开(公告)日：2022-12-01

申请号：US17496419

申请日：2021-10-07

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Min Seok JANG ,  Ju Young KIM ,  Juho PARK

IPC: G02F1/21

Abstract: Disclosed are an optical modulation device and a phase modulation method using the same. The optical modulation device includes a reflection plate, an insulating film over the reflection plate, dielectric patterns aligned on the insulating film in a first direction and extended in parallel in a second direction intersecting the first direction, and first and second graphene patterns provided between the dielectric patterns and alternately aligned in the first direction. The dielectric patterns and the first and second graphene patterns fully cover the top of the insulating film. Two dielectric patterns adjacent to each other in the first direction with one of the first graphene patterns interposed therebetween form one dielectric pattern pair. The dielectric pattern pair is provided in plural. The dielectric pattern pairs are isolated from each other in the first direction with one of the second graphene patterns interposed therebetween. A width of each of the first graphene patterns in the first direction is different from a width of each of the second graphene patterns in the first direction.

公开(公告)号：US20170181183A1

公开(公告)日：2017-06-22

申请号：US15381968

申请日：2016-12-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Youngchul SUNG ,  Gilwon LEE ,  Juho PARK

IPC: H04W72/12 ,  H04W16/28 ,  H04W24/10

CPC classification number: H04W72/1231 ,  H04B7/063 ,  H04B7/0695 ,  H04W16/28

Abstract: A base station using a plurality of beams transmits a plurality of training beams, receives measurement information regarding a first number of training beams with a highest received signal strength indication (RSSI) from each of a plurality of terminals which have received the plurality of training beams, generates an RSSI table representing RSSIs of terminals and beam indices on the basis of the measurement information regarding the first number of training beams of each terminal, and subsequently schedules terminals to perform simultaneous transmission among the plurality of terminals using the RSSI table.