公开(公告)号：US09813123B2

公开(公告)日：2017-11-07

申请号：US14379371

申请日：2013-02-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jun Young Nam ,  Jae Young Ahn

IPC: H04B7/04 ,  H04B7/0452 ,  H04W72/12 ,  H04B7/06 ,  H04B7/0456

CPC classification number: H04B7/0452 ,  H04B7/0456 ,  H04B7/0482 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0634 ,  H04B7/0639 ,  H04L5/0048 ,  H04W72/1226

Abstract: The present invention relates to a multi-input and multi-output communication method in a large-scale antenna system. An MIMO transmission method according to the present invention includes: obtaining statistical channel information on at least one terminal, dividing terminals into a plurality of classes and a plurality of groups based on the statistical channel information, wherein the groups depend on the classes; determining a group beam-forming matrix for each of the divided groups; performing a group beamforming transmission by group based on the group beam-forming matrix to obtain instantaneous channel information; and scheduling terminals based on the instantaneous channel information. Thus, it is possible to decrease the complexity in a scheduling and precoding calculation without an increase in the amount of wireless resources that are required for providing feedback for a reference signal and channel status information.

公开(公告)号：US20150016379A1

公开(公告)日：2015-01-15

申请号：US14379371

申请日：2013-02-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jun Young Nam ,  Jae Young Ahn

IPC: H04B7/04 ,  H04B7/06 ,  H04W72/12

CPC classification number: H04B7/0452 ,  H04B7/0456 ,  H04B7/0482 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0634 ,  H04B7/0639 ,  H04L5/0048 ,  H04W72/1226

Abstract: The present invention relates to a multi-input and multi-output communication method in a large-scale antenna system. An MIMO transmission method according to the present invention includes: obtaining statistical channel information on at least one terminal, dividing terminals into a plurality of classes and a plurality of groups based on the statistical channel information, wherein the groups depend on the classes; determining a group beam-forming matrix for each of the divided groups; performing a group beamforming transmission by group based on the group beam-forming matrix to obtain instantaneous channel information; and scheduling terminals based on the instantaneous channel information. Thus, it is possible to decrease the complexity in a scheduling and precoding calculation without an increase in the amount of wireless resources that are required for providing feedback for a reference signal and channel status information.

Abstract translation: 本发明涉及大规模天线系统中的多输入多输出通信方法。 根据本发明的MIMO传输方法包括：在至少一个终端上获得统计信道信息，基于所述统计信道信息将终端划分为多个类别和多个组，其中所述组依赖于所述类别; 为每个划分的组确定组波束形成矩阵; 基于组波束形成矩阵进行群组波束成形传输，获得瞬时信道信息; 并基于瞬时信道信息调度终端。 因此，可以降低调度和预编码计算的复杂度，而不增加为参考信号和信道状态信息提供反馈所需的无线资源的量。

公开(公告)号：US10951279B2

公开(公告)日：2021-03-16

申请号：US16509116

申请日：2019-07-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jun Young Nam ,  Jae Young Ahn

IPC: H04B7/0452 ,  H04B7/0456 ,  H04B7/06 ,  H04W72/12 ,  H04L5/00

Abstract: The present invention relates to a multi-input and multi-output communication method in a large-scale antenna system. An MIMO transmission method according to the present invention includes: obtaining statistical channel information on at least one terminal, dividing terminals into a plurality of classes and a plurality of groups based on the statistical channel information, wherein the groups depend on the classes; determining a group beam-forming matrix for each of the divided groups; performing a group beamforming transmission by group based on the group beam-forming matrix to obtain instantaneous channel information; and scheduling terminals based on the instantaneous channel information. Thus, it is possible to decrease the complexity in a scheduling and precoding calculation without an increase in the amount of wireless resources that are required for providing feedback for a reference signal and channel status information.

公开(公告)号：US10608711B2

公开(公告)日：2020-03-31

申请号：US15477366

申请日：2017-04-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jun Young Nam ,  Jae Young Ahn

IPC: H04B7/0452 ,  H04B7/0456 ,  H04B7/06 ,  H04W72/12 ,  H04L5/00

Abstract: The present invention relates to a multi-input and multi-output communication method in a large-scale antenna system. An MIMO transmission method according to the present invention includes: obtaining statistical channel information on at least one terminal, dividing terminals into a plurality of classes and a plurality of groups based on the statistical channel information, wherein the groups depend on the classes; determining a group beam-forming matrix for each of the divided groups; performing a group beamforming transmission by group based on the group beam-forming matrix to obtain instantaneous channel information; and scheduling terminals based on the instantaneous channel information. Thus, it is possible to decrease the complexity in a scheduling and precoding calculation without an increase in the amount of wireless resources that are required for providing feedback for a reference signal and channel status information.