-
1.发明申请公开(公告)号：US20190053286A1
公开(公告)日：2019-02-14
申请号：US16078229
申请日：2016-02-22
Inventor： Dong Ho CHO , Byung Chang CHUNG , Dae Hee PARK , Joon Sang HAN , Yun Sik KIM
IPC: H04W74/08 , H04W4/029 , H04B7/0408
Abstract: A random access method in a beam division multiple access (BDMA) system including: receiving, by a terminal, a reference signal of at least one beam sector transmitted from an access point (AP) device; estimating, by the terminal, whether the terminal is in a center area of the beam sector provided by the AP device or in the boundary area of the beam sector by using the strength of the reference signal; transmitting, by the terminal, a different preamble to the AP device in accordance with location information of whether the terminal is located in the center area or in the boundary area; and determining, by the AP device, a target beam sector for transmitting information about uplink resources to be used by the terminal, among a plurality of beam sectors on the basis of the received preamble.
-
2.发明申请公开(公告)号：US20180062721A1
公开(公告)日：2018-03-01
申请号：US15526623
申请日：2016-02-22
Inventor： Dong Ho CHO , Byung Chang CHUNG , Dae Hee PARK , Joon Sang HAN , Yun Sik KIM
CPC classification number: H04B7/0617 , H04B7/024 , H04B7/0413 , H04B7/0695 , H04W72/082
Abstract: A coordinated transmission method based on beam division multiple access and an apparatus performing the same are disclosed. The coordinated transmission method in a beam division multiple access environment, which divides a service target region into a plurality of beam sectors through a plurality of antenna arrays having at least one of a pattern characteristic and a polarization characteristic, includes receiving a coordination request from a user terminal located in the service target region and performing any one among a macro diversity operation, a coordinated silence operation, and a coordinated beamforming operation for the user terminal based on an interference level included in the coordination request.
-
公开(公告)号：US20170244467A1
公开(公告)日：2017-08-24
申请号：US15441917
申请日：2017-02-24
Inventor： Dong Ho CHO , Byung Chang CHUNG , Dae Hee PARK , Joon Sang HAN , Yun Sik KIM
IPC: H04B7/08 , H04L5/00 , H04B7/10 , H04B7/06 , H04B7/0413
CPC classification number: H04B7/0822 , H04B7/0413 , H04B7/0626 , H04B7/0802 , H04B7/0825 , H04B7/0874 , H04B7/10 , H04L5/005
Abstract: A receiving apparatus based on pattern/polarization beam division multiple access (BDMA) including an antenna configured to receive a reference signal related to at least one of patterns and polarizations of a plurality of antennas included in a transmitting apparatus, and configured to transmit channel information, and a controller configured to select a particular antenna group among a plurality of antenna groups that are grouped from the plurality of antennas included in the transmitting apparatus using the reference signal, and configured to generate the channel information corresponding to the particular antenna group.
-
公开(公告)号：US20200381838A1
公开(公告)日：2020-12-03
申请号：US16723266
申请日：2019-12-20
Inventor： Dong Ho CHO , Gang Minh LEE , Yun Sik KIM
IPC: H01Q15/02 , H04B1/04 , H04J99/00 , H01Q21/06 , H04B7/0413
Abstract: Disclosed are a spatial modulation-based transmitter and communication method employing a lens antenna. The spatial modulation-based transmitter includes a plurality of unit antennas, a modulator configured to perform non-orthogonal multiple access and spatial modulation for an input signal, and a controller configured to determine a target unit antenna which will transmit data in a spatial modulation manner at a current time point among the plurality of unit antennas. Each of the unit antennas includes a plurality of antenna units and a lens structure which shifts a phase of an electromagnetic wave output by at least one of the plurality of antenna units. The lens structure shifts the phase so that the plurality of antenna units may have different radiation patterns.
-
-
-
Search Results
4
records
(took 0.031 seconds)
