IN2014KN01729A - - Google Patents

Info

Publication number
IN2014KN01729A
IN2014KN01729A IN1729KON2014A IN2014KN01729A IN 2014KN01729 A IN2014KN01729 A IN 2014KN01729A IN 1729KON2014 A IN1729KON2014 A IN 1729KON2014A IN 2014KN01729 A IN2014KN01729 A IN 2014KN01729A
Authority
IN
India
Prior art keywords
downlink communications
base station
antenna arrays
sector antenna
mimo
Prior art date
Application number
Inventor
Sairamesh Nammi
Wrycza Peter Von
Qingyu Miao
Original Assignee
Ericsson Telefon Ab L M
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.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of IN2014KN01729A publication Critical patent/IN2014KN01729A/en

Links

Classifications

    • 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
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • 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
    • H04B7/0491—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more sectors, i.e. sector diversity
    • H04B7/0495—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more sectors, i.e. sector diversity using overlapping sectors in the same base station to implement MIMO for antennas
    • 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
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • 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
    • H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank into account
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • 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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]

Abstract

A wireless terminal may receive multiple input multiple output (MIMO) downlink communications from a wireless communication network including a plurality of base station sector antenna arrays using a codebook of precoding vectors. MIMO downlink communications may be received from the wireless communication. When receiving the MIMO downlink communications as multi point MIMO downlink communications from first and second base station sector antenna arrays of the plurality of base station sector antenna arrays a precoding vector may be selected for the multi point MIMO downlink communications from only a subset of the precoding vectors of the codebook.
IN1729KON2014 2012-01-27 2013-01-15 IN2014KN01729A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261591307P 2012-01-27 2012-01-27
PCT/SE2013/050022 WO2013112097A1 (en) 2012-01-27 2013-01-15 Methods for selecting precoding vectors for multi-point mimo (multiple-input-multiple-output) communications and related wireless terminals and radio network nodes

Publications (1)

Publication Number Publication Date
IN2014KN01729A true IN2014KN01729A (en) 2015-10-23

Family

ID=47678968

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1729KON2014 IN2014KN01729A (en) 2012-01-27 2013-01-15

Country Status (4)

Country Link
US (3) US9065494B2 (en)
EP (1) EP2807760A1 (en)
IN (1) IN2014KN01729A (en)
WO (1) WO2013112097A1 (en)

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EP3058770A4 (en) * 2013-10-20 2017-06-14 Arbinder Singh Pabla Wireless system with configurable radio and antenna resources
EP2905934B1 (en) * 2014-02-07 2018-05-30 Vodafone GmbH Mobile telecommunication system using soft-information dequantizer
CN105308894B (en) * 2014-02-20 2018-11-20 华为技术有限公司 A kind of data transmission method and emitter
WO2015135596A1 (en) * 2014-03-14 2015-09-17 Telefonaktiebolaget L M Ericsson (Publ) Technique for precoder determination
EP3132554B1 (en) * 2014-05-08 2018-02-21 Huawei Technologies Co., Ltd. Network device for joint decoding and method thereof
US10141993B2 (en) 2016-06-16 2018-11-27 Intel Corporation Modular antenna array beam forming
US10440693B2 (en) 2016-11-04 2019-10-08 At&T Intellectual Property I, L.P. Asynchronous multi-point transmission schemes
US11191126B2 (en) 2017-06-05 2021-11-30 Everest Networks, Inc. Antenna systems for multi-radio communications
US11005194B1 (en) 2018-04-25 2021-05-11 Everest Networks, Inc. Radio services providing with multi-radio wireless network devices with multi-segment multi-port antenna system
US11050470B1 (en) 2018-04-25 2021-06-29 Everest Networks, Inc. Radio using spatial streams expansion with directional antennas
US10879627B1 (en) 2018-04-25 2020-12-29 Everest Networks, Inc. Power recycling and output decoupling selectable RF signal divider and combiner
US11089595B1 (en) 2018-04-26 2021-08-10 Everest Networks, Inc. Interface matrix arrangement for multi-beam, multi-port antenna

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US8073068B2 (en) * 2005-08-22 2011-12-06 Qualcomm Incorporated Selective virtual antenna transmission
CN102017583B (en) 2008-04-29 2014-09-10 苹果公司 Improved performance for a multiple antenna beamforming cellular network
EP2194740A1 (en) 2008-12-03 2010-06-09 Nokia Siemens Network Oy Method and device for data processing in a mobile communication network
WO2011021861A2 (en) 2009-08-19 2011-02-24 Lg Electronics Inc. Apparatus and method for generating codebook in wireless communication system
TWI497936B (en) * 2009-10-05 2015-08-21 Koninkl Philips Electronics Nv A method for signalling a precoding in a cooperative beamforming transmission mode
TWI562554B (en) * 2009-12-30 2016-12-11 Sony Corp Communications system and device using beamforming
CN102244566B (en) * 2010-05-11 2014-03-12 中兴通讯股份有限公司 Downlink transmission method and base station for multiple input and multiple output (MIMO) system
JP5596498B2 (en) * 2010-11-02 2014-09-24 シャープ株式会社 Base station apparatus, mobile station apparatus, and wireless communication system using them
WO2012095188A1 (en) 2011-01-14 2012-07-19 Telefonaktiebolaget L M Ericsson (Publ) Bundled codeword to layer mapping for mimo with reduced signalling
US20130157710A1 (en) 2011-12-16 2013-06-20 Telefonaktiebolaget LM Ericsson(pUb) Methods Providing Multipoint Communications Based on Sector Loads And Related Network Nodes

Also Published As

Publication number Publication date
US20140161203A1 (en) 2014-06-12
US9300369B2 (en) 2016-03-29
US9065494B2 (en) 2015-06-23
WO2013112097A1 (en) 2013-08-01
EP2807760A1 (en) 2014-12-03
US9692493B2 (en) 2017-06-27
US20160173173A1 (en) 2016-06-16
US20150256235A1 (en) 2015-09-10

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