公开(公告)号：US20150181611A1

公开(公告)日：2015-06-25

申请号：US14581430

申请日：2014-12-23

Applicant: Industry-Academic Cooperation Foundation Gyeongsang National University ,  Electronics and Telecommunications Research Institute

Inventor： Bang Chul JUNG ,  Won Yong SHIN ,  Hyun Jong YANG ,  Jae Joon PARK ,  Kwang Jae LIM ,  Jae Sun CHA ,  Eun Kyung KIM ,  Hyun LEE ,  Sung Cheol CHANG

IPC: H04W72/08

CPC classification number: H04B7/086 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0632 ,  H04W28/04

Abstract: A communication system configured to send data using an interference alignment scheme is disclosed herein. The disclosed communication system includes an MS and a BS. The disclosed BS sends data using a transmission beamforming matrix that minimizes intra-cell interference. The disclosed MS receives the data using a reception beamforming matrix that minimizes inter-cell interference. The BS sends information about a reference beamforming matrix to the MS, and sends a pilot signal to the MS using the reference beamforming matrix. The MS estimates an effective channel using the reference beamforming matrix, and calculates the intensity of an interference signal from an interference BS.

Abstract translation: 本文公开了配置为使用干扰对准方案发送数据的通信系统。 所公开的通信系统包括MS和BS。 公开的BS使用最小化小区内干扰的发送波束成形矩阵来发送数据。 所公开的MS使用最小化小区间干扰的接收波束形成矩阵来接收数据。 BS向MS发送关于参考波束成形矩阵的信息，并使用参考波束形成矩阵向MS发送导频信号。 MS使用参考波束成形矩阵估计有效信道，并且计算来自干扰BS的干扰信号的强度。

公开(公告)号：US20220150971A1

公开(公告)日：2022-05-12

申请号：US17586638

申请日：2022-01-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Chanho YOON ,  Seung-Kwon BAEK ,  Jae Joon PARK ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04W74/08

Abstract: Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band:
The transmitter adjusts at least one of transmission timing of the first data and clear channel assessment (CCA) timing for the channel to occupy the channel. The transmitter determines whether the channel may be occupied by performing a CCA on the channel at the CCA timing. The transmitter transmits the first data through the channel at the transmission timing of the first data, when it is determined that the channel may be occupied.

公开(公告)号：US20140334356A1

公开(公告)日：2014-11-13

申请号：US14274718

申请日：2014-05-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Jae Joon PARK ,  Hyun LEE ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04W72/08 ,  H04L5/00

CPC classification number: H04W72/082 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053

Abstract: An exemplary embodiment of the present invention provides a resource management method performed by a coordinator for controlling interference between cells. The coordinator receives a channel state of a second base station neighboring a first base station from the first base station. The coordinator partitions a resource based on the channel state. The coordinator allocates the partitioned resource to the first base station. In addition, the coordinator transmits a first message requesting resource management to be set to the first base station. Here, the first message includes information on the allocated resource.

Abstract translation: 本发明的示例性实施例提供了一种由协调器执行的用于控制小区之间的干扰的资源管理方法。 协调器从第一基站接收与第一基站相邻的第二基站的信道状态。 协调器根据信道状态对资源进行分区。 协调器将分区资源分配给第一个基站。 此外，协调器发送请求资源管理的第一消息以设置到第一基站。 这里，第一消息包括关于分配的资源的信息。

公开(公告)号：US20190394804A1

公开(公告)日：2019-12-26

申请号：US16537365

申请日：2019-08-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Chanho YOON ,  Seung-Kwon BAEK ,  Jae Joon PARK ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04W74/08

Abstract: Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band:The transmitter adjusts at least one of transmission timing of the first data and clear channel assessment (CCA) timing for the channel to occupy the channel. The transmitter determines whether the channel may be occupied by performing a CCA on the channel at the CCA timing. The transmitter transmits the first data through the channel at the transmission timing of the first data, when it is determined that the channel may be occupied.

公开(公告)号：US20160095114A1

公开(公告)日：2016-03-31

申请号：US14865968

申请日：2015-09-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Chanho YOON ,  Seung-Kwon BAEK ,  Jae Joon PARK ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04W72/04

CPC classification number: H04W74/0816

Abstract: Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band:The transmitter adjusts at least one of transmission timing of the first data and clear channel assessment (CCA) timing for the channel to occupy the channel. The transmitter determines whether the channel may be occupied by performing a CCA on the channel at the CCA timing. The transmitter transmits the first data through the channel at the transmission timing of the first data, when it is determined that the channel may be occupied.

Abstract translation: 提供了一种用于通过发送器发送具有通过非许可频带的信道的周期性的第一数据的方法：发送机调整第一数据的发送定时和用于信道占用的清除信道评估（CCA）定时中的至少一个 这个频道。 发射机通过在CCA定时在信道上执行CCA来确定信道是否可能被占用。 当确定可以占用信道时，发射机以第一数据的发送定时通过信道发送第一数据。

公开(公告)号：US20170202018A1

公开(公告)日：2017-07-13

申请号：US15469558

申请日：2017-03-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Sun CHA ,  Eunkyung KIM ,  Jae Joon PARK ,  Seung-Kwon BAEK ,  Pyeong Jung SONG ,  Chanho YOON ,  Sung Cheol CHANG

IPC: H04W74/08 ,  H04W16/14

CPC classification number: H04W74/08 ,  H04W16/14 ,  H04W74/0816 ,  H04W88/08

Abstract: Disclosed are a base station and a channel access method performing a channel access in a unlicensed band. The channel access method includes: performing channel sensing at least once on a channel of the unlicensed band in a channel sensing period of a frame; and broadcasting a reservation signal for the channel when the channel is empty.

公开(公告)号：US20150131577A1

公开(公告)日：2015-05-14

申请号：US14535676

申请日：2014-11-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Jae Joon PARK ,  Hyun LEE ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04B7/02 ,  H04W72/04 ,  H04W24/02

CPC classification number: H04B7/024 ,  H04B7/0617 ,  H04B7/0619

Abstract: A method of providing cooperative communication to a terminal through a plurality of base stations is provided. A plurality of base stations each transmit a midamble to a terminal, and the terminal measures a channel through a received midamble. The terminal transmits information about the measured channel to at least one of the plurality of base stations.

Abstract translation: 提供了一种通过多个基站向终端提供协作通信的方法。 多个基站各自向终端发送中间码，并且终端通过接收到的中间码测量信道。 终端将关于所测量的信道的信息发送到多个基站中的至少一个。

公开(公告)号：US20150045033A1

公开(公告)日：2015-02-12

申请号：US14455399

申请日：2014-08-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Eunkyung KIM ,  Jae Sun CHA ,  Jae Joon PARK ,  Hyun LEE ,  Kwang Jae LIM ,  Sung Cheol CHANG

IPC: H04B7/155 ,  H04W36/38

CPC classification number: H04B7/15507 ,  H04W36/00 ,  H04W88/04

Abstract: A data relay method includes receiving a relay request from a BS, and when the relay request is accepted, relaying data between the BS and at least one external terminal, or the data relay method includes determining relaying between a first terminal among a plurality of terminals, and other remaining terminals excluding the first terminal among the plurality of terminals, and relaying data between the first terminal and the other remaining terminals.

Abstract translation: 数据中继方法包括从BS接收中继请求，当接收到中继请求时，BS与至少一个外部终端之间的中继数据或数据中继方法包括：确定多个终端中的第一终端之间的中继 ，以及在多个终端之中除了第一终端之外的其他剩余终端，并且在第一终端和其他剩余终端之间中继数据。