GB201211597D0 - Antenna control - Google Patents

Antenna control

Info

Publication number
GB201211597D0
GB201211597D0 GB201211597A GB201211597A GB201211597D0 GB 201211597 D0 GB201211597 D0 GB 201211597D0 GB 201211597 A GB201211597 A GB 201211597A GB 201211597 A GB201211597 A GB 201211597A GB 201211597 D0 GB201211597 D0 GB 201211597D0
Authority
GB
United Kingdom
Prior art keywords
fading
detecting
antenna selection
fading conditions
signal
Prior art date
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Withdrawn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
GB201211597A
Other versions
GB2503504A (en
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.)
Renesas Electronics Corp
Original Assignee
Renesas Mobile Corp
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 Renesas Mobile Corp filed Critical Renesas Mobile Corp
Priority to GB1211597.8A priority Critical patent/GB2503504A/en
Publication of GB201211597D0 publication Critical patent/GB201211597D0/en
Priority to US13/923,677 priority patent/US9313010B2/en
Publication of GB2503504A publication Critical patent/GB2503504A/en
Priority to US14/813,875 priority patent/US9871641B2/en
Withdrawn legal-status Critical Current

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
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • 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
    • H04B7/0602—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 antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters

Abstract

At the user equipment (UE), at least  two radio wave signals are received, preferably on different respective UE antennas. Fading conditions in relation to the received signals are detected and uplink antenna selection in the user equipment is controlled at least on the basis of the detected fading conditions. Detecting the fading conditions may involve determining the signal delay spread between received radio wave signals, determining which antenna receives a signal first, detecting line-of-sight, or detecting a scattering scenario. Detecting the fading conditions may involve determining a fading parameter such as fading delay, Doppler spread, angle of arrival or polarization. In an alternative embodiment transmit antenna selection at the UE is based on one or more motionrelated characteristics of the UE. In either embodiment, a network entity such as a base station may perform the antenna selection on the basis of its analysis of an uplink signal from the UE, combined with fading conditions or motion-related characteristics communicated from the UE. The antenna selection may additionally take into account a signal quality parameter such as RSSI, BER, SNR or SIR.
GB1211597.8A 2012-06-29 2012-06-29 Uplink antenna selection in a user equipment on the basis of detected fading conditions for downlink signals Withdrawn GB2503504A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1211597.8A GB2503504A (en) 2012-06-29 2012-06-29 Uplink antenna selection in a user equipment on the basis of detected fading conditions for downlink signals
US13/923,677 US9313010B2 (en) 2012-06-29 2013-06-21 Controlling TX antenna selection
US14/813,875 US9871641B2 (en) 2012-06-29 2015-07-30 Apparatus and method for selecting an antenna for uplink communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1211597.8A GB2503504A (en) 2012-06-29 2012-06-29 Uplink antenna selection in a user equipment on the basis of detected fading conditions for downlink signals

Publications (2)

Publication Number Publication Date
GB201211597D0 true GB201211597D0 (en) 2012-08-15
GB2503504A GB2503504A (en) 2014-01-01

Family

ID=46721649

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1211597.8A Withdrawn GB2503504A (en) 2012-06-29 2012-06-29 Uplink antenna selection in a user equipment on the basis of detected fading conditions for downlink signals

Country Status (1)

Country Link
GB (1) GB2503504A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102191800B1 (en) * 2014-03-28 2020-12-17 삼성전자주식회사 Method for Switching Antennas

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4213881A1 (en) * 1992-04-28 1993-11-04 Bosch Gmbh Robert BIDIRECTIONAL DATA TRANSMISSION SYSTEM BETWEEN A BEAK AND A VEHICLE
WO2003023977A1 (en) * 2001-08-28 2003-03-20 Linkair Communications,Inc. Transmitter diversity method and transmitter diversity device
US7079809B1 (en) * 2002-02-07 2006-07-18 Kathrein-Werke Kg Systems and methods for providing improved wireless signal quality using diverse antenna beams
US7430190B2 (en) * 2004-01-22 2008-09-30 The Regents Of The University Of California Systems and methods for resource allocation to multiple antenna arrays for maintaining a constant bit rate (CBR) channel
KR20050087551A (en) * 2004-02-27 2005-08-31 삼성전자주식회사 Method for transmitting a radio signal using channel information
JP2005341531A (en) * 2004-04-27 2005-12-08 Matsushita Electric Ind Co Ltd Wireless communications system and radio station
US7756099B2 (en) * 2007-07-13 2010-07-13 Mitsubishi Electric Research Laboratories, Inc. Method and system for selecting antennas adaptively in OFDMA networks
WO2009080057A1 (en) * 2007-12-19 2009-07-02 Telecom Italia S.P.A. Method and system for switched beam antenna communications
KR101469154B1 (en) * 2008-02-21 2014-12-05 삼성전자주식회사 Apparatus and method for changing antenna structure in antenna system
KR101528782B1 (en) * 2009-02-26 2015-06-15 삼성전자주식회사 Apparatus and method for communication mode changing in multi antenna system considering channel environment
US8374260B2 (en) * 2009-06-22 2013-02-12 Motorola Mobility Llc Method and apparatus for implementing uplink transmit diversity in a switched antenna orthogonal frequency division multiplexing communication system
US8351849B2 (en) * 2010-08-23 2013-01-08 Sony Ericsson Mobile Communications Ab Multi-standard wireless terminals including smart antenna systems for multiple input multiple output communications
EP2445120B1 (en) * 2010-10-25 2016-09-14 Telefonaktiebolaget LM Ericsson (publ) Wireless communications system and method

Also Published As

Publication number Publication date
GB2503504A (en) 2014-01-01

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20140102 AND 20140108

WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)