DOWNLINK BEAMFORMING IN MU-MIMO SYSTEM - NOKIA SHANGHAI BELL CO LTD

Title:

DOWNLINK BEAMFORMING IN MU-MIMO SYSTEM

Document Type and Number:

WIPO Patent Application WO/2021/142629

Kind Code:

A1

Abstract:

According to embodiments of the present disclosure, downlink beamforming in MU-MIMO systems is proposed. Embodiments of the present disclosure take practical receivers into consideration, to further mitigate the interferences sensed by terminal devices. The beamforming scheme according to embodiments of the present disclosure has many advantages. For example, embodiments of the present disclosure tackle interferences from terminal device view, to mitigate the interferences which really affect the received signals of terminal devices. Embodiments of the present disclosure do not assume that terminal devices utilize Eigen receivers but consider more practical receivers used by the terminal devices to mitigate the interferences. Embodiments of the present disclosure have high flexibility, different interference cancelling methods can be used to replace the ZF method.

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Inventors:

WANG LIJUN (CN)
MAO WEIQIANG (CN)
LIAO ZHIJUN (CN)
LUO YOUBAO (CN)
WESEMANN STEFAN (DE)

Application Number:

PCT/CN2020/072066

Publication Date:

July 22, 2021

Filing Date:

January 14, 2020

Export Citation:

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Assignee:

NOKIA SHANGHAI BELL CO LTD (CN)
NOKIA SOLUTIONS & NETWORKS OY (FI)

International Classes:

H04B7/04

Domestic Patent References:

WO2010081736A1	2010-07-22
WO2012123257A2	2012-09-20
WO2013064898A1	2013-05-10

Foreign References:

US20140094164A1	2014-04-03
US20090233557A1	2009-09-17
CN102833038A	2012-12-19
US20110299379A1	2011-12-08

Other References: