FI954209A0 - Paikan rekisteröinti solukko/satelliittimatkaviestinjärjestelmissä - Google Patents

Paikan rekisteröinti solukko/satelliittimatkaviestinjärjestelmissä

Info

Publication number
FI954209A0
FI954209A0 FI954209A FI954209A FI954209A0 FI 954209 A0 FI954209 A0 FI 954209A0 FI 954209 A FI954209 A FI 954209A FI 954209 A FI954209 A FI 954209A FI 954209 A0 FI954209 A0 FI 954209A0
Authority
FI
Finland
Prior art keywords
mobile radio
radio telephone
paging
cellular
signal strength
Prior art date
Application number
FI954209A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI954209A (fi
Inventor
Paul W Dent
Alex K Raith
Original Assignee
Ericsson G E Mobile Communicat
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 G E Mobile Communicat filed Critical Ericsson G E Mobile Communicat
Publication of FI954209A0 publication Critical patent/FI954209A0/fi
Publication of FI954209A publication Critical patent/FI954209A/fi

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18545Arrangements for managing station mobility, i.e. for station registration or localisation
    • H04B7/18547Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station
    • H04B7/1855Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station using a telephonic control signal, e.g. propagation delay variation, Doppler frequency variation, power variation, beam identification
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18545Arrangements for managing station mobility, i.e. for station registration or localisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
FI954209A 1994-01-11 1995-09-08 Paikan rekisteröinti solukko/satelliittimatkaviestinjärjestelmissä FI954209A (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17995894A 1994-01-11 1994-01-11
PCT/US1995/000318 WO1995019094A1 (en) 1994-01-11 1995-01-11 Position registration for cellular satellite communication systems

Publications (2)

Publication Number Publication Date
FI954209A0 true FI954209A0 (fi) 1995-09-08
FI954209A FI954209A (fi) 1995-09-08

Family

ID=22658690

Family Applications (1)

Application Number Title Priority Date Filing Date
FI954209A FI954209A (fi) 1994-01-11 1995-09-08 Paikan rekisteröinti solukko/satelliittimatkaviestinjärjestelmissä

Country Status (15)

Country Link
US (1) US6542716B1 (de)
EP (1) EP0662758B1 (de)
JP (1) JPH08510610A (de)
KR (1) KR960701567A (de)
CN (1) CN1071979C (de)
AT (1) ATE197860T1 (de)
AU (1) AU680348B2 (de)
BR (1) BR9505638A (de)
CA (1) CA2156738A1 (de)
DE (1) DE69519484T2 (de)
EG (1) EG20504A (de)
FI (1) FI954209A (de)
SG (1) SG55053A1 (de)
WO (1) WO1995019094A1 (de)
ZA (1) ZA95170B (de)

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7924783B1 (en) 1994-05-06 2011-04-12 Broadcom Corporation Hierarchical communications system
US6970434B1 (en) * 1995-06-07 2005-11-29 Broadcom Corporation Hierarchical communication system providing intelligent data, program and processing migration
SG55053A1 (en) 1994-01-11 1998-12-21 Erricsson Inc Position registration for cellular satellite communication systems
US6195555B1 (en) 1994-01-11 2001-02-27 Ericsson Inc. Method of directing a call to a mobile telephone in a dual mode cellular satellite communication network
US5907809A (en) * 1994-01-11 1999-05-25 Ericsson Inc. Position determination using multiple base station signals
US6868270B2 (en) 1994-01-11 2005-03-15 Telefonaktiebolaget L.M. Ericsson Dual-mode methods, systems, and terminals providing reduced mobile terminal registrations
CA2209643A1 (en) * 1995-01-05 1996-07-11 Ericsson, Inc. Position registration for mobile phones
GB2303764A (en) * 1995-07-28 1997-02-26 Int Mobile Satellite Org Communication with a mobile station in an unknown spot beam
US5937352A (en) * 1996-05-13 1999-08-10 Trw Inc. Satellite-based cellular telecommunications system utilizing an earth station subsystem
US5890062A (en) * 1996-05-16 1999-03-30 Trw Inc. Satellite-based cellular telecommunications system utilizing a multiple registration location register
AU6987896A (en) * 1996-09-06 1998-03-26 Brigitta Wagner Wireless communications system using beam direction multiplexing
GB2317303B (en) * 1996-09-09 1998-08-26 I Co Global Communications Communications apparatus and method
JPH10319109A (ja) * 1997-03-18 1998-12-04 Hitachi Inf Technol:Kk 移動体探索システム
GB2323988A (en) * 1997-04-01 1998-10-07 Ico Services Ltd Refining a satellite position estimate
KR100434475B1 (ko) * 1997-04-18 2004-07-16 삼성전자주식회사 휴대폰의 무선 정보 서비스 수신장치와 방법
US6175719B1 (en) * 1997-06-25 2001-01-16 Hughes Electronics Corporation Multi-spot-beam satellite system with broadcast and surge capacity capability
AU8405498A (en) 1997-07-14 1999-02-08 Hughes Electronics Corporation Immediate channel assignment in a wireless system
US6560461B1 (en) 1997-08-04 2003-05-06 Mundi Fomukong Authorized location reporting paging system
FI110658B (fi) * 1998-01-15 2003-02-28 Nokia Corp Parannettu paikannusgeometria ja solupohjainen paikannusjärjestelmä
EP0967739A1 (de) 1998-06-24 1999-12-29 ICO Services Ltd. Zelleigenschaftsmessung in Idle Modus und Übertragung zum Zentral bei Rufbegin
US6515617B1 (en) * 1998-09-01 2003-02-04 Hughes Electronics Corporation Method and system for position determination using geostationary earth orbit satellite
AU5805299A (en) * 1998-09-08 2000-03-27 Angel Technologies Corporation Network for providing wireless communications using an atmospheric platform
US6414944B1 (en) 1998-10-08 2002-07-02 Ericsson Inc. Management of spotbeam selection information in satellite mobile communication systems
US6553225B1 (en) 1999-02-03 2003-04-22 Wei Zhao Apparatus and method for positioning single-offset zones in a spot beam coverage area to maximize call duration in a satellite-based communications network
US6332069B1 (en) 1999-02-10 2001-12-18 Hughes Electronics Corporation Apparatus and method for grouping carriers to minimize the occurrence of call blocking in a satellite-based communications network
DE69903912D1 (de) * 1999-03-04 2002-12-19 Ico Services Ltd Erzeugung einer Liste Nachbarzellen in einer mobilen Satelliten Kommunikationsanordnung
EP1041739A1 (de) * 1999-03-30 2000-10-04 ICO Services Ltd. Selektion einer Zelle in einem desaktivierten Modus
US7215650B1 (en) * 1999-08-16 2007-05-08 Viasat, Inc. Adaptive data rate control for narrowcast networks
JP3488144B2 (ja) * 1999-08-24 2004-01-19 松下電器産業株式会社 位置通知装置
JP2001160801A (ja) * 1999-12-02 2001-06-12 Sony Corp 二重方式デジタルデータ伝送方法および装置
JP2001309419A (ja) * 2000-04-21 2001-11-02 Fujitsu Ltd 移動通信システムの位置登録方法及びその移動機
US7142520B1 (en) * 2000-06-16 2006-11-28 Nokia Mobile Phones Ltd. Method and apparatus for mobile internet protocol regional paging
US6859652B2 (en) 2000-08-02 2005-02-22 Mobile Satellite Ventures, Lp Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis
US20030069750A1 (en) * 2000-08-11 2003-04-10 Sony Corporation System for automatic device registration
US7792488B2 (en) 2000-12-04 2010-09-07 Atc Technologies, Llc Systems and methods for transmitting electromagnetic energy over a wireless channel having sufficiently weak measured signal strength
US7079511B2 (en) * 2000-12-06 2006-07-18 Qualcomm, Incorporated Method and apparatus for handoff of a wireless packet data services connection
EA005472B1 (ru) * 2001-02-12 2005-02-24 Ай Си О СЕРВИСИЗ ЛИМИТЕД Устройство и способ связи
JP3717805B2 (ja) * 2001-06-07 2005-11-16 三洋電機株式会社 移動通信端末機
US7373105B2 (en) * 2001-11-07 2008-05-13 The Aerospace Corporation Method of determining communication link quality employing beacon signals
JP4007812B2 (ja) * 2002-01-18 2007-11-14 富士通株式会社 ラマン増幅器および波長多重光通信システム、並びに、ラマン増幅の制御方法
US20040114556A1 (en) * 2002-06-24 2004-06-17 Miller David S Orthogonal code division multiple access on a return link
US20060171335A1 (en) * 2005-02-03 2006-08-03 Michael Yuen Backup channel selection in wireless LANs
US7751826B2 (en) 2002-10-24 2010-07-06 Motorola, Inc. System and method for E911 location privacy protection
KR100947513B1 (ko) * 2002-11-18 2010-03-12 엘지전자 주식회사 이동통신단말기의 착신불능 안내방법
GB2413914B (en) * 2003-01-16 2007-04-04 Obs Inc Systems and methods for mobile security and monitoring
US7869822B2 (en) * 2003-02-24 2011-01-11 Autocell Laboratories, Inc. Wireless network apparatus and system field of the invention
US7215661B2 (en) 2003-02-24 2007-05-08 Autocell Laboratories, Inc. Method for associating access points with stations in a wireless network
CN1319405C (zh) * 2003-03-27 2007-05-30 华为技术有限公司 在监听系统中定位目标用户设备的方法及系统
US7366516B1 (en) 2003-05-14 2008-04-29 Sprint Spectrum L.P. Localized SMS messaging based on location of a mobile station
CN100486145C (zh) * 2003-08-15 2009-05-06 华为技术有限公司 实现空中监听的方法和监听设备
WO2005032155A2 (en) * 2003-08-28 2005-04-07 Tekelec Methods and systems for providing wireless local area network-base transceiver station (wlan-bts) gateway
JP4534233B2 (ja) * 2003-09-05 2010-09-01 インターナショナル・ビジネス・マシーンズ・コーポレーション モバイル装置の自動検出
AU2004306121B2 (en) * 2003-09-23 2009-06-25 Atc Technologies, Llc Systems and methods for mobility management in overlaid satellite and terrestrial communications systems
US7466679B2 (en) * 2003-12-31 2008-12-16 Motorola, Inc. Method and system for maintaining registration information for multiple communication areas
WO2006031927A2 (en) * 2004-09-15 2006-03-23 Tekelec Methods, systems, and computer program products for providing wireless-fidelity (wi-fi) gateway visitor location register (vlr) functionality
KR100584377B1 (ko) 2004-09-25 2006-05-26 삼성탈레스 주식회사 주파수 오차에 강한 비콘 신호 수신 장치 및 방법
KR100677428B1 (ko) * 2005-01-29 2007-02-02 엘지전자 주식회사 이동통신 단말기
US20060171305A1 (en) * 2005-02-03 2006-08-03 Autocell Laboratories, Inc. Access point channel forecasting for seamless station association transition
US20060171304A1 (en) * 2005-02-03 2006-08-03 Hill David R WLAN background scanning
US7796986B2 (en) * 2005-03-11 2010-09-14 Atc Technologies, Llc Modification of transmission values to compensate for interference in a satellite down-link communications
US20060246899A1 (en) 2005-04-28 2006-11-02 Research In Motion Limited System and method for providing network advertisement information via a network advertisement broker (NAB)
US7593711B2 (en) * 2005-05-18 2009-09-22 Lojack Operating Company, Lp Vehicle locating unit with improved power management method
US8428584B2 (en) 2005-07-01 2013-04-23 Research In Motion Limited System and method for accelerating network selection by a wireless user equipment (UE) device
US20070004404A1 (en) * 2005-07-01 2007-01-04 Research In Motion Limited System and method for accelerating network selection by a wireless user equipment (UE) device using satellite-based positioning system
US8411616B2 (en) 2005-11-03 2013-04-02 Piccata Fund Limited Liability Company Pre-scan for wireless channel selection
JP4981068B2 (ja) * 2006-01-27 2012-07-18 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) 経路損失ポリゴンによる測位
DE102006008463A1 (de) * 2006-02-17 2007-08-23 Kaco Gmbh + Co. Kg Prüfvorrichtung zur Erfassung der Dampfemission an wenigstens einer Leckagestelle, vorzugsweise bei Gleitringdichtungen, insbesondere im automotiven Bereich
US8428586B2 (en) * 2006-05-19 2013-04-23 Research In Motion Limited System and method for facilitating accelerated network selection in a radio network environment
US8010105B2 (en) 2006-05-19 2011-08-30 Research In Motion Limited System and method for facilitating accelerated network selection using a weighted network list
US8009628B2 (en) * 2007-02-28 2011-08-30 Telefonaktiebolaget Lm Ericsson (Publ) Private mobility management enhancements
US20090154386A1 (en) * 2007-12-18 2009-06-18 Tricci So Wimax multicast broadcast services (mbs) efficient handover and power saving support for intra and inter-mbs zones
US8601146B2 (en) * 2009-10-21 2013-12-03 Tekelec, Inc. Methods, systems, and computer readable media for session initiation protocol (SIP) identity verification
CN103621148B (zh) 2011-07-27 2018-05-11 马维尔国际贸易有限公司 减少plmn搜索时间
US10136391B2 (en) * 2012-01-05 2018-11-20 Tara Chand Singhal System and method to enhance battery life in cell phone devices
US8923858B2 (en) * 2012-02-21 2014-12-30 Marvell World Trade Ltd. Parallel multi-RAT PLMN search
US8938016B1 (en) 2012-09-18 2015-01-20 Marvell International Ltd. Fast identification of OFDM signal
GB2513302A (en) * 2013-04-15 2014-10-29 Inmarsat Global Ltd Transmitter positioning for satellite communications
WO2017052711A2 (en) * 2015-07-24 2017-03-30 Qualcomm Incorporated Satellite communication location reporting and paging
WO2017016822A1 (en) * 2015-07-27 2017-02-02 Philips Lighting Holding B.V. Light emitting device for generating light with embedded information
US11632166B2 (en) 2016-09-13 2023-04-18 Qualcomm Incorporated Neighbor cell list
CN108306669A (zh) * 2017-01-11 2018-07-20 深圳市首欣通达科技有限公司 一种基于正交频分复用的双模卫星通话方法
EP3668197B1 (de) 2018-12-12 2021-11-03 Rohde & Schwarz GmbH & Co. KG Verfahren und funkgerät zur einstellung der übertragungsleistung einer funkübertragung
CN110636609A (zh) * 2019-10-23 2019-12-31 广州爱浦路网络技术有限公司 基于卫星网络终端寻呼优化的方法
US11641587B2 (en) 2021-03-10 2023-05-02 International Business Machines Corporation Location optimization in a communication network
US11805395B1 (en) * 2022-07-11 2023-10-31 Syniverse Technologies, Llc Message routing system for cellular to satellite networks

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3200965A1 (de) * 1982-01-14 1983-07-21 Siemens AG, 1000 Berlin und 8000 München Nachbarfunkzellen-organisationskanal-verweissystem
US5303286A (en) * 1991-03-29 1994-04-12 Space Systems/Loral, Inc. Wireless telephone/satellite roaming system
US4972456A (en) 1989-02-10 1990-11-20 Gte Mobilnet Incorporated Rural radiotelephone system
US5187805A (en) 1989-10-02 1993-02-16 Motorola, Inc. Telemetry, tracking and control for satellite cellular communication systems
US5287541A (en) * 1989-11-03 1994-02-15 Motorola, Inc. Global satellite communication system with geographic protocol conversion
JP2833818B2 (ja) * 1990-03-14 1998-12-09 日本電気株式会社 位置登録方式
US5073900A (en) * 1990-03-19 1991-12-17 Mallinckrodt Albert J Integrated cellular communications system
US5081703A (en) 1990-06-27 1992-01-14 Pactel Corporation Satellite mobile communication system for rural service areas
US5119504A (en) 1990-07-19 1992-06-02 Motorola, Inc. Position aided subscriber unit for a satellite cellular system
US5218619A (en) * 1990-12-17 1993-06-08 Ericsson Ge Mobile Communications Holding, Inc. CDMA subtractive demodulation
US5151919A (en) 1990-12-17 1992-09-29 Ericsson-Ge Mobile Communications Holding Inc. Cdma subtractive demodulation
US5208756A (en) * 1991-01-28 1993-05-04 Song Han L Vehicle locating and navigating system
DE69227269T2 (de) * 1991-02-25 1999-06-02 Motorola, Inc., Fort Worth, Tex. Gegenstandsortungssystem
US5526404A (en) * 1991-10-10 1996-06-11 Space Systems/Loral, Inc. Worldwide satellite telephone system and a network coordinating gateway for allocating satellite and terrestrial gateway resources
CA2078932C (en) 1991-10-10 2003-12-02 Robert A. Wiedeman Satellite telecommunications system using network coordinating gateways operative with a terrestrial communication system
JPH08500216A (ja) * 1991-11-08 1996-01-09 テレデスィック コーポレイション 衛星通信システムのビーム補償方法
US5235633A (en) * 1991-12-26 1993-08-10 Everett Dennison Cellular telephone system that uses position of a mobile unit to make call management decisions
US5343512A (en) * 1992-03-27 1994-08-30 Motorola, Inc. Call setup method for use with a network having mobile end users
US5313457A (en) * 1992-04-14 1994-05-17 Trimble Navigation Limited Code position modulation system and method for multiple user satellite communications
US5369681A (en) * 1992-05-12 1994-11-29 Telefonaktiebolaget L M Ericsson Cellular communications system utilizing paging areas
JP2997610B2 (ja) * 1993-07-07 2000-01-11 三菱電機株式会社 移動体衛星通信システム
US5483664A (en) * 1993-07-26 1996-01-09 Motorola, Inc. Cellular communications with scheduled handoffs
US5543813A (en) * 1993-08-12 1996-08-06 Kokusai Denshin Denwa Kabushiki Kaisha System for determining and registering location of mobile terminal for communication system with non-geosynchronous satellites
US5428816A (en) * 1993-09-09 1995-06-27 Hughes Aircraft Company Method and apparatus for mobile assisted handoff
AU678626B2 (en) * 1993-10-14 1997-06-05 Ericsson Ge Mobile Communications Inc. Adaptive bandwidth receiver
US5668837A (en) * 1993-10-14 1997-09-16 Ericsson Inc. Dual-mode radio receiver for receiving narrowband and wideband signals
CA2134729C (en) * 1993-11-01 1999-09-07 Thomas E. Buss Location dependent information receiving device and method
US6195555B1 (en) * 1994-01-11 2001-02-27 Ericsson Inc. Method of directing a call to a mobile telephone in a dual mode cellular satellite communication network
SG55053A1 (en) 1994-01-11 1998-12-21 Erricsson Inc Position registration for cellular satellite communication systems
US5907809A (en) * 1994-01-11 1999-05-25 Ericsson Inc. Position determination using multiple base station signals
US5535432A (en) * 1994-09-14 1996-07-09 Ericsson Ge Mobile Communications Inc. Dual-mode satellite/cellular phone with a frequency synthesizer
US5613204A (en) * 1994-12-22 1997-03-18 Bell Atlantic Mobile Systems, Inc. Beacon system for roaming cellular stations
CA2209643A1 (en) * 1995-01-05 1996-07-11 Ericsson, Inc. Position registration for mobile phones
US6021122A (en) * 1996-06-07 2000-02-01 Qualcomm Incorporated Method and apparatus for performing idle handoff in a multiple access communication system
US5978366A (en) * 1996-12-20 1999-11-02 Ericsson Inc. Methods and systems for reduced power operation of cellular mobile terminals

Also Published As

Publication number Publication date
AU680348B2 (en) 1997-07-24
EP0662758A3 (de) 1998-04-22
BR9505638A (pt) 1996-01-09
EG20504A (en) 1999-06-30
ZA95170B (en) 1995-12-12
WO1995019094A1 (en) 1995-07-13
KR960701567A (ko) 1996-02-24
DE69519484T2 (de) 2001-04-05
CN1071979C (zh) 2001-09-26
EP0662758B1 (de) 2000-11-29
US6542716B1 (en) 2003-04-01
EP0662758A2 (de) 1995-07-12
AU1725895A (en) 1995-08-01
DE69519484D1 (de) 2001-01-04
CA2156738A1 (en) 1995-07-13
FI954209A (fi) 1995-09-08
ATE197860T1 (de) 2000-12-15
CN1124082A (zh) 1996-06-05
SG55053A1 (en) 1998-12-21
JPH08510610A (ja) 1996-11-05
MX9503862A (es) 1997-04-30

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