Title:
DEVICES, METHODS AND COMPUTER PROGRAMS FOR TWO-PART FEEDBACK INFORMATION TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2023/092339
Kind Code:
A1
Abstract:
Devices, methods and computer programs for two-part feedback information transmission in wireless communications are disclosed. The invention allows using the two-part feedback information transmission, e.g., for improved downlink multiple-input and multiple-output (MIMO) precoding in time-division duplex (TDD) -based communication systems. The feed-back information transmission allows compensating for adverse effects of incomplete UL-DL reciprocity for DL MIMO precoding caused by mismatched DL and UL channel measurements. The feedback information transmission being two-part allows low overhead for the feedback information.
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Inventors:
NASIRI KHORMUJI MAJID (SE)
QIN YI (CN)
LIU KUNPENG (CN)
POPOVIC BRANISLAV M (SE)
QIN YI (CN)
LIU KUNPENG (CN)
POPOVIC BRANISLAV M (SE)
Application Number:
PCT/CN2021/132836
Publication Date:
June 01, 2023
Filing Date:
November 24, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L1/16; H04B7/02; H04B7/06; H04B17/00; H04W24/02; H04W88/02; H04W88/08
Foreign References:
| CN101771510A | 2010-07-07 | |||
| US20080049709A1 | 2008-02-28 |
Other References:
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on New Radio (NR) Access Technology; Physical Layer Aspects (Release 14)", 3GPP DRAFT; RP-170377 38802-200, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, 5 March 2017 (2017-03-05), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051233809
CATT: "CSI feedback for NR MIMO", 3GPP DRAFT; R1-1611384, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20161114 - 20161118, 5 November 2016 (2016-11-05), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051189918
TOKYO INSTITUTE OF TECHNOLOGY: "Hybrid feedback and precoding for MU-MIMO & JT-CoMP", 3GPP DRAFT; R1-101290 - HYBRID FEEDBACK AND PRECODING FOR MU-MIMO & JT-COMP - TOKYO TECH, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. San Francisco, USA; 20100222, 19 February 2010 (2010-02-19), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP050419030
CATT: "CSI feedback for NR MIMO", 3GPP DRAFT; R1-1611384, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20161114 - 20161118, 5 November 2016 (2016-11-05), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051189918
TOKYO INSTITUTE OF TECHNOLOGY: "Hybrid feedback and precoding for MU-MIMO & JT-CoMP", 3GPP DRAFT; R1-101290 - HYBRID FEEDBACK AND PRECODING FOR MU-MIMO & JT-COMP - TOKYO TECH, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. San Francisco, USA; 20100222, 19 February 2010 (2010-02-19), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP050419030
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