Title:
METHOD AND ACCESS NETWORK NODE FOR BEAM CONTROL
Document Type and Number:
WIPO Patent Application WO/2021/109135
Kind Code:
A1
Abstract:
A method and an access network node are disclosed for beam control. According to an embodiment, the access network node determines first spatial domain information of a channel between a first terminal device and the access network node, based on second spatial domain information of the channel estimated by uplink signals received previously from the first terminal device at multiple time points. The access network node determines beamforming weights for the first terminal device based on the first spatial domain information.
Inventors:
LIU KANGQI (CN)
ZHU HUAISONG (CN)
ZHANG YIPENG (CN)
ZHU HUAISONG (CN)
ZHANG YIPENG (CN)
Application Number:
PCT/CN2019/123731
Publication Date:
June 10, 2021
Filing Date:
December 06, 2019
Export Citation:
Assignee:
ERICSSON TELEFON AB L M (SE)
LIU KANGQI (CN)
LIU KANGQI (CN)
International Classes:
H04B7/06; H04W16/28
Domestic Patent References:
| WO2013056435A1 | 2013-04-25 |
Foreign References:
| CN108923834A | 2018-11-30 | |||
| CN108566255A | 2018-09-21 | |||
| US20090274074A1 | 2009-11-05 | |||
| US20170373743A1 | 2017-12-28 | |||
| CN103929281A | 2014-07-16 | |||
| US20190229953A1 | 2019-07-25 | |||
| US20160269157A1 | 2016-09-15 | |||
| US20120014425A1 | 2012-01-19 |
Other References:
ZTE: "Consideration on Multi-user beamforming", 3GPP DRAFT; R1-090636 CONSIDERATION ON MULTI-USER BEAMFORMING, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Athens, Greece; 20090209 - 20090213, 3 February 2009 (2009-02-03), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP050597231
ERICSSON: "Enhancements to multi-beam operation", 3GPP DRAFT; R1-1903231 ENHANCEMENTS TO MULTI-BEAM OPERATION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Athens, Greece; 20190225 - 20190301, 20 February 2019 (2019-02-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051600927
See also references of EP 4070474A4
ERICSSON: "Enhancements to multi-beam operation", 3GPP DRAFT; R1-1903231 ENHANCEMENTS TO MULTI-BEAM OPERATION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Athens, Greece; 20190225 - 20190301, 20 February 2019 (2019-02-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051600927
See also references of EP 4070474A4
Attorney, Agent or Firm:
ZHONGZI LAW OFFICE (CN)
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