公开(公告)号：US20150181611A1

公开(公告)日：2015-06-25

申请号：US14581430

申请日：2014-12-23

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

发明人： 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分类号： H04W72/08

CPC分类号： H04B7/086 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0632 ,  H04W28/04

摘要： 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.

摘要翻译： 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：US20170142734A1

公开(公告)日：2017-05-18

申请号：US15355602

申请日：2016-11-18

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)

发明人： Hye Kyung JWA ,  Hyun Jong YANG ,  Jee Hyeon NA ,  Jung Mo MOON ,  Mu Yong SHIN ,  Dong Seung KWON ,  Myeung Un KIM ,  Youjin KIM

IPC分类号： H04W72/08 ,  H04L5/00 ,  H04B7/06 ,  H04W72/04

CPC分类号： H04W72/082 ,  H04B7/0617 ,  H04L5/0048 ,  H04L5/0073 ,  H04W16/10 ,  H04W16/28

摘要： An apparatus and method for controlling interference between small-cell base stations by using multi-antenna beamforming. The apparatus includes a channel state information (CSI) estimator, a non-optimal beamforming factor calculator, an optimal beamforming factor calculator, and an interference controller. The apparatus and method control interference between small-cell base stations by calculating an optimal beamforming factor assuming that information exchange between base stations is limited in a small-cell downlink system and each base station knows only a channel value sent by itself or a channel value received by itself.