公开(公告)号：US20230379017A1

公开(公告)日：2023-11-23

申请号：US18131990

申请日：2023-04-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Keun Young KIM ,  Jung Ho MYUNG ,  Sung Ho CHAE ,  Hyeon Woong KIM ,  Hyun Jung PARK ,  Su Hyun OH

IPC: H04B7/0456

CPC classification number: H04B7/0456

Abstract: A signal transmitting method suitable for a MU-MIMO environment and achieving a high performance with low complexity is provided. The signal transmitting method includes: splitting each message stream into a common message stream and a private message stream; combining a plurality of common message streams for the plurality of receivers to generate a common stream; encoding the common stream and private message streams for the plurality of receivers to generate an encoded common stream and encoded private message streams; precoding the encoded common stream and the encoded private message streams to adjust amplitudes and phases of symbols such that power is distributed between the encoded common stream and the encoded private message streams and generate precoded signals; and converting the precoded signals into a plurality of RF signals, adjusting phases of the plurality of RF signals, and outputting the phase-adjusted RF signals through a plurality of MIMO antennas.

公开(公告)号：US20240097770A1

公开(公告)日：2024-03-21

申请号：US18091027

申请日：2022-12-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Ho MYUNG ,  Young-Jo KO ,  Keun Young KIM ,  Kapseok CHANG

IPC: H04B7/08

CPC classification number: H04B7/08

Abstract: An operation method of a first access point (AP) may comprise: transmitting, to a control device of a base station, channel information between the first AP and one or more user equipments (UEs) connected to the base station; receiving allocation information determined by the control device; identifying an entity to decode a uplink (UL) signal of each of the one or more UEs from among a plurality of APs and the control device constituting the base station, based on the allocation information; directly performing a decoding operation on a first UL signal received from a first UE among the one or more UEs, based on the allocation information; and transmitting, to the control device, a first report related to a result of the decoding operation on the first UL signal.

公开(公告)号：US20170038454A1

公开(公告)日：2017-02-09

申请号：US15229324

申请日：2016-08-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Keun Young KIM ,  Yeong Jin KIM ,  Seung Chan BANG ,  Moon Sik LEE ,  Sang Ho LEE ,  Jun Hwan LEE

IPC: G01S3/781 ,  G01S3/801

CPC classification number: G01S3/781 ,  G01S3/801 ,  G01S5/16 ,  G01S5/30

Abstract: Provided is a method for estimating a signal generation position based on signal strength, including: measuring a first signal strength which is a strength of a signal propagated from a generation position of the signal at a first measurement point; measuring a second signal strength which is a strength of the signal propagated from the generation position of the signal at a second measurement point distinguished from the first measurement point; calculating an attenuation constant of a medium to which the signal is propagated from the generation position up to the first measurement point and the second measurement point; and estimating the generation position by using the first signal strength, the second signal strength, and the attenuation constant, wherein the first measurement point, the second measurement point, and the generation position are present on one straight line. This method can be extended to estimate a signal generation point in 2D plane or 3D space.

Abstract translation: 提供了一种用于基于信号强度估计信号生成位置的方法，包括：测量作为在第一测量点处的信号的生成位置传播的信号的强度的第一信号强度; 测量第二信号强度，其是从与第一测量点区分开的第二测量点处的信号的产生位置传播的信号的强度; 计算信号从所述生成位置传播到所述第一测量点和所述第二测量点的介质的衰减常数; 并且通过使用第一信号强度，第二信号强度和衰减常数来估计生成位置，其中第一测量点，第二测量点和生成位置存在于一条直线上。 该方法可以扩展到2D平面或3D空间中的信号生成点。

公开(公告)号：US20140355704A1

公开(公告)日：2014-12-04

申请号：US14041632

申请日：2013-09-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Juyul LEE ,  Keun Young KIM ,  Seong Chul CHO ,  Seung-Hwan Lee

IPC: H04B7/04

CPC classification number: H04B7/026 ,  H04B7/0426 ,  H04B7/0452 ,  H04B7/0617

Abstract: A method of connecting base stations by a one-way cooperative channel forming a beam is provided. Since it is possible to determine directions of beams and to distribute power components by small amounts of calculations, it is possible to realize the base stations in a one-way cooperative situation with small expenses. In addition, the base stations according to the exemplary embodiment of the present invention may minimize the influence of interference generated by signals transmitted by other base stations through the one-way cooperative channel and the influence of interference generated by signals transmitted to other terminals.

Abstract translation: 提供了一种通过形成光束的单向协作通道来连接基站的方法。 由于可以通过少量的计算来确定波束的方向和分配功率分量，所以可以以小的费用在单向协作状态下实现基站。 此外，根据本发明的示例性实施例的基站可以最小化由其他基站通过单向协作信道发送的信号产生的干扰的影响以及由发送到其他终端的信号产生的干扰的影响。

公开(公告)号：US20130344879A1

公开(公告)日：2013-12-26

申请号：US13851541

申请日：2013-03-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Keun Young KIM ,  Seung-Hwan LEE ,  Dong Seung KWON

IPC: H04W76/02 ,  H04W72/04

CPC classification number: H04W76/14 ,  H04W16/26 ,  H04W72/0406 ,  H04W72/042

Abstract: Disclosed is a cellular communication system allowing direct communication between terminals within a cell or simultaneous transmission and reception of signals between a base station and the terminals through a repeater to be made by introducing a universal link, and a communication method thereof. The communication method of the cellular communication system includes: transmitting, by a base station, universal link setting information and a transmission control signal to a first terminal within a cell, transmitting, by the base station, the universal link setting information and a reception control signal to a second terminal within the cell, and directly transmitting/receiving, by the first and second terminals, signals through the universal link.

Abstract translation: 公开了允许在小区内的终端之间进行直接通信的蜂窝通信系统，以及通过引入通用链路来进行基站和终端之间的信号的同时发送和接收，以及通信方法。 蜂窝通信系统的通信方法包括：由基站将通用链路设定信息和发送控制信号发送到小区内的第一终端，由基站发送通用链路设定信息和接收控制 信号发送到小区内的第二终端，并且由第一和第二终端通过通用链路直接发送/接收信号。

公开(公告)号：US20230101594A1

公开(公告)日：2023-03-30

申请号：US17563272

申请日：2021-12-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Keun Young KIM ,  Seung Chan BANG ,  Young-Jo KO ,  Kapseok CHANG ,  Il Gyu KIM

IPC: H04W4/029 ,  G06V20/50 ,  G01S5/02

Abstract: A positioning method using images and radio waves may include: estimating a distance and an angle from the positioning reference node to a positioning target terminal; identifying an obstacle or reflective object in a vicinity of the positioning target terminal or on a path between the positioning target terminal and the positioning reference node by using image information on the positioning target terminal at a position estimated by the distance and the angle; estimating an incident angle or a reflection angle of a radio wave signal reflected by the reflective object identified based on the image information; and estimating a position of the positioning target terminal based on the reflection angle and the distance.