EP3794785A4 - Eigenvalue-based channel hardening and explicit feedback - Google Patents

Eigenvalue-based channel hardening and explicit feedback Download PDF

Info

Publication number: EP3794785A4
Authority: EP; European Patent Office
Prior art keywords: eigenvalue; based channel; explicit feedback; channel hardening; hardening
Prior art date: 2018-05-17
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP18919297.4A

Other languages

German (de)

French (fr)

Other versions

EP3794785A1 (en

Inventor

Xiaomao Mao

Frederick Vook

Rana Ahmed

William J. Hillery

Eugene Visotsky

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Nokia Technologies Oy

Original Assignee

Nokia Technologies Oy

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2018-05-17

Filing date

2018-05-17

Publication date

2022-05-04

2018-05-17 Application filed by Nokia Technologies Oy filed Critical Nokia Technologies Oy

2021-03-24 Publication of EP3794785A1 publication Critical patent/EP3794785A1/en

2022-05-04 Publication of EP3794785A4 publication Critical patent/EP3794785A4/en

Status Withdrawn legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
- H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0658—Feedback reduction
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
- H04L25/0248—Eigen-space methods

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Power Engineering (AREA)
Physics & Mathematics (AREA)
Mathematical Physics (AREA)
Mobile Radio Communication Systems (AREA)

EP18919297.4A 2018-05-17 2018-05-17 Eigenvalue-based channel hardening and explicit feedback Withdrawn EP3794785A4 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
PCT/CN2018/087367 WO2019218317A1 (en)	2018-05-17	2018-05-17	Eigenvalue-based channel hardening and explicit feedback

Publications (2)

Publication Number	Publication Date
EP3794785A1 EP3794785A1 (en)	2021-03-24
EP3794785A4 true EP3794785A4 (en)	2022-05-04

Family

ID=68539550

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP18919297.4A Withdrawn EP3794785A4 (en)	2018-05-17	2018-05-17	Eigenvalue-based channel hardening and explicit feedback

Country Status (3)

Country	Link
EP (1)	EP3794785A4 (en)
CN (1)	CN112119617B (en)
WO (1)	WO2019218317A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN112470412B (en)	2018-08-30	2023-12-26	上海诺基亚贝尔股份有限公司	Frequency domain time domain channel hardening and overhead reduction
EP3878200B1 (en) *	2018-11-08	2023-09-06	Telefonaktiebolaget LM Ericsson (publ)	Measurement adaptation based on channel hardening
WO2020147076A1 (en)	2019-01-17	2020-07-23	Nokia Shanghai Bell Co., Ltd.	Overhead reduction in channel state information feedback

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2011079294A1 (en) *	2009-12-23	2011-06-30	Qualcomm Incorporated	Cluster-specific reference signals for communication systems with multiple transmission points
US20160072562A1 (en) *	2014-09-10	2016-03-10	Samsung Electronics Co., Ltd.	Channel state information reporting with basis expansion for advanced wireless communications systems
US20160142115A1 (en) *	2014-11-17	2016-05-19	Samsung Electronics Co., Ltd.	Method and apparatus for precoding channel state information reference signal

Family Cites Families (7)

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Publication number	Priority date	Publication date	Assignee	Title
KR101978771B1 (en) *	2013-01-31	2019-05-15	삼성전자주식회사	Method and apparatus for estimating multiple stream multi user cqi based on per stream channel gain feedback in wireless communication system
CN103650400B (en) *	2013-08-21	2017-06-13	华为技术有限公司	A kind of method, the apparatus and system of selection pre-coding matrix instruction
US20150110210A1 (en) *	2013-10-18	2015-04-23	Nokia Solutions And Networks Oy	Channel state information acquisition and feedback for full dimension multiple input multiple output
US9893777B2 (en) *	2014-11-17	2018-02-13	Samsung Electronics Co., Ltd.	Method and apparatus for precoding channel state information reference signal
WO2016086971A1 (en) *	2014-12-02	2016-06-09	Nokia Solutions And Networks Management International Gmbh	Coded allocation of channel state information reference signals
CN107294880B (en) *	2016-03-31	2020-07-31	上海诺基亚贝尔股份有限公司	Method and apparatus for determining channel information
WO2018064801A1 (en) *	2016-10-08	2018-04-12	Nokia Technologies Oy	Explicit channel state information feedback

2018
- 2018-05-17 CN CN201880093411.6A patent/CN112119617B/en active Active
- 2018-05-17 EP EP18919297.4A patent/EP3794785A4/en not_active Withdrawn
- 2018-05-17 WO PCT/CN2018/087367 patent/WO2019218317A1/en active Application Filing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2011079294A1 (en) *	2009-12-23	2011-06-30	Qualcomm Incorporated	Cluster-specific reference signals for communication systems with multiple transmission points
US20160072562A1 (en) *	2014-09-10	2016-03-10	Samsung Electronics Co., Ltd.	Channel state information reporting with basis expansion for advanced wireless communications systems
US20160142115A1 (en) *	2014-11-17	2016-05-19	Samsung Electronics Co., Ltd.	Method and apparatus for precoding channel state information reference signal

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JIN YINGNI ET AL: "A New Design and Multiport Performance Evaluation for 3D Massive MIMO System", 2016 IEEE 84TH VEHICULAR TECHNOLOGY CONFERENCE (VTC-FALL), IEEE, 18 September 2016 (2016-09-18), pages 1 - 5, XP033078701, DOI: 10.1109/VTCFALL.2016.7880862 *
See also references of WO2019218317A1 *

Also Published As

Publication number	Publication date
EP3794785A1 (en)	2021-03-24
WO2019218317A1 (en)	2019-11-21
CN112119617B (en)	2023-04-25
CN112119617A (en)	2020-12-22

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Legal Events

Date	Code	Title	Description
2019-11-22	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2021-01-27	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2021-02-19	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2021-02-19	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2021-03-24	17P	Request for examination filed	Effective date: 20201217
2021-03-24	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2021-03-24	AX	Request for extension of the european patent	Extension state: BA ME
2021-08-25	DAV	Request for validation of the european patent (deleted)
2021-08-25	DAX	Request for extension of the european patent (deleted)
2022-01-12	RIC1	Information provided on ipc code assigned before grant	Ipc: H04B 7/06 20060101ALI20211207BHEP Ipc: H04B 7/0456 20170101ALI20211207BHEP Ipc: H04B 7/0417 20170101ALI20211207BHEP Ipc: H04L 25/02 20060101ALI20211207BHEP Ipc: H04L 25/03 20060101AFI20211207BHEP
2022-05-04	A4	Supplementary search report drawn up and despatched	Effective date: 20220404
2022-05-04	RIC1	Information provided on ipc code assigned before grant	Ipc: H04B 7/06 20060101ALI20220329BHEP Ipc: H04B 7/0456 20170101ALI20220329BHEP Ipc: H04B 7/0417 20170101ALI20220329BHEP Ipc: H04L 25/02 20060101ALI20220329BHEP Ipc: H04L 25/03 20060101AFI20220329BHEP
2023-04-07	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: EXAMINATION IS IN PROGRESS
2023-05-10	17Q	First examination report despatched	Effective date: 20230412
2023-12-15	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
2024-01-17	18D	Application deemed to be withdrawn	Effective date: 20230823