IN2014DN06837A - - Google Patents

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Publication number
IN2014DN06837A
IN2014DN06837A IN6837DEN2014A IN2014DN06837A IN 2014DN06837 A IN2014DN06837 A IN 2014DN06837A IN 6837DEN2014 A IN6837DEN2014 A IN 6837DEN2014A IN 2014DN06837 A IN2014DN06837 A IN 2014DN06837A
Authority
IN
India
Prior art keywords
base station
data signal
radio base
user equipment
active
Prior art date
Application number
Inventor
Niklas Wernersson
Svante Bergman
George Jöngren
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 IN2014DN06837A publication Critical patent/IN2014DN06837A/en

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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
    • 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
    • H04B7/0617—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 for beam forming
    • 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
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection

Abstract

Embodiments herein relate to a method in a radio base station (12) for transmitting a data signal to a user equipment (10) in a radio communications network. The radio base station (12) is connected to an active antenna array of a number of active transmitting antennas and the radio base station (12) serves the user equipment (10) in the radio communications network. Each active transmitting antenna comprises sub elements. The radio base station (12) transforms a precoded data signal using a transformation which transformation directs signals vertically. Furthermore the radio base station (12) transmits the transformed data signal over at least one sub element to the user equipment (10). The transmitted data signal is enabled to be directed vertically and the transformed data signal is limited to be transmitted in a direction within a range of elevation angles.
IN6837DEN2014 2012-03-02 2012-03-02 IN2014DN06837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2012/050239 WO2013129984A1 (en) 2012-03-02 2012-03-02 Radio base station and method therein for transmitting a data signal to a user equipment in a radio communications network

Publications (1)

Publication Number Publication Date
IN2014DN06837A true IN2014DN06837A (en) 2015-05-22

Family

ID=49042798

Family Applications (1)

Application Number Title Priority Date Filing Date
IN6837DEN2014 IN2014DN06837A (en) 2012-03-02 2012-03-02

Country Status (4)

Country Link
US (1) US9031148B2 (en)
EP (1) EP2820772B1 (en)
IN (1) IN2014DN06837A (en)
WO (1) WO2013129984A1 (en)

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US9368871B2 (en) * 2012-03-14 2016-06-14 John Howard Fractional beam forming network antenna
US9161241B2 (en) * 2012-03-30 2015-10-13 Nokia Solutions And Networks Oy Reference signal design and signaling for per-user elevation MIMO
US9059878B2 (en) 2012-03-30 2015-06-16 Nokia Solutions And Networks Oy Codebook feedback method for per-user elevation beamforming
US9119209B2 (en) * 2012-03-30 2015-08-25 Samsung Electronics Co., Ltd. Apparatus and method for channel-state-information pilot design for an advanced wireless network
EP2832011A1 (en) * 2012-03-30 2015-02-04 Nokia Solutions and Networks Oy Feedback methodology for per-user elevation mimo
KR20150140276A (en) * 2013-04-08 2015-12-15 엘지전자 주식회사 Method and apparatus for providing control information for fractional beamforming in a wireless communication system
US9154206B2 (en) * 2013-06-28 2015-10-06 Nokia Solutions And Networks Oy Vertical beam design for UE-specific beamforming by matching to a CB
WO2015169368A1 (en) * 2014-05-08 2015-11-12 Telefonaktiebolaget L M Ericsson (Publ) Beam forming using a dual polarized antenna arrangement
US9544036B2 (en) 2014-05-08 2017-01-10 Telefonaktiebolaget Lm Ericsson (Publ) Beam forming for reference signals using an antenna arrangement
US20160072562A1 (en) * 2014-09-10 2016-03-10 Samsung Electronics Co., Ltd. Channel state information reporting with basis expansion for advanced wireless communications systems
JP6479994B2 (en) * 2015-01-14 2019-03-06 テレフオンアクチーボラゲット エルエム エリクソン（パブル） Codebook subset constraint signaling
CN106160801B (en) * 2015-03-25 2020-01-31 联想(北京)有限公司 signal processing method and base station
US10205499B2 (en) 2015-06-18 2019-02-12 Telefonaktiebolaget Lm Ericsson (Publ) Systems and methods for adapting a codebook for use with multiple antenna configurations
US10020857B2 (en) 2015-09-04 2018-07-10 Telefonaktiebolaget L M Ericsson (Publ) Precoding a transmission from an antenna array that includes co-polarized antenna elements aligned in a given spatial dimension
CN108352870B (en) 2015-11-04 2021-07-27 瑞典爱立信有限公司 Method and transmitting radio node for precoding transmissions from an antenna array
CN107370530B (en) * 2016-05-12 2021-02-12 华为技术有限公司 Channel state information feedback method, precoding method, terminal equipment and base station
CN108667550B (en) * 2017-03-28 2020-02-14 华为技术有限公司 Interference coordination method and device
US10389426B2 (en) * 2017-04-25 2019-08-20 Samsung Electronics Co., Ltd. Method and apparatus for higher rank CSI reporting in advanced wireless communication systems
DK3602816T3 (en) 2017-08-11 2022-03-21 Ericsson Telefon Ab L M Enhanced beam-based codebook subset constraint signaling
US11349550B2 (en) * 2020-08-21 2022-05-31 Huawei Technologies Co., Ltd. Systems and methods for angular direction indication in wireless communication

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US20040162115A1 (en) * 2003-02-14 2004-08-19 Martin Smith Wireless antennas, networks, methods, software, and services
CN101356747A (en) 2006-01-04 2009-01-28 艾利森电话股份有限公司 Array antennas apparatus
GB0602530D0 (en) * 2006-02-09 2006-03-22 Quintel Technology Ltd Phased array antenna system with multiple beams
EP2351246B1 (en) 2008-11-03 2017-02-22 Telefonaktiebolaget LM Ericsson (publ) Method for transmission of reference signals and determination of precoding matrices for multi-antenna transmission
KR101607988B1 (en) * 2009-04-23 2016-04-12 삼성전자주식회사 Apparatus and method for interference mitigation in wireless communication system
US8891647B2 (en) * 2009-10-30 2014-11-18 Futurewei Technologies, Inc. System and method for user specific antenna down tilt in wireless cellular networks
CN102823155B (en) 2010-04-07 2016-07-13 瑞典爱立信有限公司 For the method and apparatus controlling precoder selection feedback in wireless communications
US8494033B2 (en) * 2010-06-15 2013-07-23 Telefonaktiebolaget L M Ericsson (Publ) Methods providing precoder feedback using multiple precoder indices and related communications devices and systems
WO2011162422A1 (en) * 2010-06-21 2011-12-29 Pantech Co., Ltd. Transmitter and receiver, method thereof in wireless communication system
KR101875614B1 (en) * 2010-10-25 2018-07-06 엘지전자 주식회사 Method of reducing intercell interference in wireless communication system and apparatus thereof
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Also Published As

Publication number Publication date
EP2820772A1 (en) 2015-01-07
EP2820772B1 (en) 2019-11-20
US20130229980A1 (en) 2013-09-05
WO2013129984A1 (en) 2013-09-06
US9031148B2 (en) 2015-05-12

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