HK173995A - A method for synchronizing a mobile unit and a base station - Google Patents

A method for synchronizing a mobile unit and a base station

Info

Publication number
HK173995A
HK173995A HK173995A HK173995A HK173995A HK 173995 A HK173995 A HK 173995A HK 173995 A HK173995 A HK 173995A HK 173995 A HK173995 A HK 173995A HK 173995 A HK173995 A HK 173995A
Authority
HK
Hong Kong
Prior art keywords
synchronizing
base station
mobile unit
mobile
unit
Prior art date
Application number
HK173995A
Other languages
English (en)
Inventor
Jan Erik Ake Steinar Dahlin
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 HK173995A publication Critical patent/HK173995A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0066Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/20Arrangements for detecting or preventing errors in the information received using signal quality detector
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/20Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/208Arrangements for detecting or preventing errors in the information received using signal quality detector involving signal re-encoding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/0212Channel estimation of impulse response
    • H04L25/0216Channel estimation of impulse response with estimation of channel length
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0072Transmission or use of information for re-establishing the radio link of resource information of target access point
HK173995A 1989-06-26 1995-11-16 A method for synchronizing a mobile unit and a base station HK173995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/371,126 US5042082A (en) 1989-06-26 1989-06-26 Mobile assisted handoff

Publications (1)

Publication Number Publication Date
HK173995A true HK173995A (en) 1995-11-24

Family

ID=23462588

Family Applications (2)

Application Number Title Priority Date Filing Date
HK173995A HK173995A (en) 1989-06-26 1995-11-16 A method for synchronizing a mobile unit and a base station
HK180295A HK180295A (en) 1989-06-26 1995-11-23 Mobile assisted handoff

Family Applications After (1)

Application Number Title Priority Date Filing Date
HK180295A HK180295A (en) 1989-06-26 1995-11-23 Mobile assisted handoff

Country Status (16)

Country Link
US (1) US5042082A (de)
EP (2) EP0406186B1 (de)
JP (2) JP2799245B2 (de)
KR (2) KR970002756B1 (de)
CN (1) CN1021758C (de)
AR (1) AR247321A1 (de)
AU (2) AU625085B2 (de)
BR (2) BR9006823A (de)
CA (2) CA2033340C (de)
DE (2) DE69022307T2 (de)
HK (2) HK173995A (de)
MY (2) MY105834A (de)
NZ (2) NZ233770A (de)
PH (1) PH26898A (de)
SA (1) SA90100320B1 (de)
WO (2) WO1991000657A1 (de)

Families Citing this family (149)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200957A (en) * 1989-06-26 1993-04-06 Telefonaktiebolaget L M Ericsson Mobile assisted handoff
GB8915172D0 (en) * 1989-07-01 1989-08-23 Orbitel Mobile Communications Receiver gain control for radio telephone system
DE69127006T2 (de) * 1990-02-23 1998-01-22 Mitsubishi Electric Corp Mobiles Kommunikationssystem
US6359872B1 (en) * 1997-10-28 2002-03-19 Intermec Ip Corp. Wireless personal local area network
US6749122B1 (en) * 1990-05-25 2004-06-15 Broadcom Corporation Multi-level hierarchial radio-frequency system communication system
US6654378B1 (en) * 1992-03-18 2003-11-25 Broadcom Corp. Transaction control system including portable data terminal and mobile customer service station
JP2748656B2 (ja) * 1990-06-19 1998-05-13 ソニー株式会社 移動無線通信方法
US5081679A (en) * 1990-07-20 1992-01-14 Ericsson Ge Mobile Communications Holding Inc. Resynchronization of encryption systems upon handoff
GB2246490A (en) * 1990-07-23 1992-01-29 Philips Electronic Associated Fdm-tdd cordless telephone system measures channel quality for handover
US5230082A (en) * 1990-08-16 1993-07-20 Telefonaktiebolaget L M Ericsson Method and apparatus for enhancing signalling reliability in a cellular mobile radio telephone system
US5289526A (en) * 1990-08-24 1994-02-22 Safco Corporation Cellular system access monitor
WO1992007434A1 (en) * 1990-10-23 1992-04-30 Omnipoint Corporation Method and apparatus for establishing spread spectrum communications
JPH04170825A (ja) * 1990-11-05 1992-06-18 Toshiba Corp 無線通信方式
US5170485A (en) * 1990-11-07 1992-12-08 Motorola, Inc. Hand-off algorithm for elongated radiotelephone cells
GB2249918A (en) * 1990-11-14 1992-05-20 Philips Electronic Associated Channel scanning in tdd cordless telephone system
US5257399A (en) * 1990-11-28 1993-10-26 Telefonaktiebolaget L M Ericsson Multiple access handling in a cellular communications system
US5278832A (en) * 1990-12-20 1994-01-11 Motorola, Inc. Method and apparatus for controlling the timing within a transceiver
GB9028108D0 (en) * 1990-12-27 1991-02-13 British Telecomm Mobile radio handover initiation determination
WO1992012578A1 (en) * 1990-12-31 1992-07-23 Motorola, Inc. Frequency control system
GB2254971B (en) * 1991-03-07 1994-12-21 Ericsson Telefon Ab L M Mobile radio communications stations
US5175867A (en) * 1991-03-15 1992-12-29 Telefonaktiebolaget L M Ericsson Neighbor-assisted handoff in a cellular communications system
US5257402A (en) * 1991-03-28 1993-10-26 Motorola, Inc. Method for effecting handoff in a multi-site communication system
KR970004858B1 (ko) * 1991-04-01 1997-04-04 모토로라 인코포레이티드 목적 채널을 검증하는 무선 전화 시스템
US5369786A (en) * 1991-05-01 1994-11-29 Motorola, Inc. Enhanced power level usage in a radiotelephone system
US5694414A (en) * 1991-05-13 1997-12-02 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5887020A (en) * 1991-05-13 1999-03-23 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5790587A (en) * 1991-05-13 1998-08-04 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5815525A (en) * 1991-05-13 1998-09-29 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5796772A (en) * 1991-05-13 1998-08-18 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
JP3032044B2 (ja) * 1991-05-31 2000-04-10 国際電気株式会社 無瞬断スイッチ切替方式
JP3085731B2 (ja) * 1991-05-31 2000-09-11 株式会社東芝 データ合成回路
US5285469A (en) 1991-06-03 1994-02-08 Omnipoint Data Corporation Spread spectrum wireless telephone system
US5355515A (en) * 1991-06-12 1994-10-11 Telefonaktiebolaget L M Ericsson Method and apparatus for estimating initial time alignment in a cellular communications network
US5195090A (en) * 1991-07-09 1993-03-16 At&T Bell Laboratories Wireless access telephone-to-telephone network interface architecture
US5184347A (en) * 1991-07-09 1993-02-02 At&T Bell Laboratories Adaptive synchronization arrangement
US5195091A (en) * 1991-07-09 1993-03-16 At&T Bell Laboratories Adaptive synchronization arrangement
CA2066538C (en) * 1991-07-09 1997-12-23 Brian David Bolliger Mobile-telephone system call processing arrangement
US5455962A (en) * 1991-09-19 1995-10-03 Motorola, Inc. Performance through half-hopping and spatial diversity
US5629975A (en) * 1991-09-20 1997-05-13 Qualcomm Incorporated Comprehensive mobile communications device registration method
US5517675A (en) * 1991-10-04 1996-05-14 Motorola, Inc. Signal transmission synchronization in a communication system
JP3264925B2 (ja) * 1991-11-08 2002-03-11 アトメル コーポレイション 無線通信システム
AU661512B2 (en) * 1991-11-21 1995-07-27 Motorola Solutions, Inc. Method of assigning a voice/data channel or a temporary control channel
JP2893951B2 (ja) * 1991-12-11 1999-05-24 モトローラ・インコーポレイテッド 改善されたハンドオーバー決定アルゴリズム
ATE213887T1 (de) 1991-12-16 2002-03-15 Xircom Wireless Inc Spreizspektrum-datenveröffentlichungssystem
SE470036B (sv) * 1992-03-24 1993-10-25 Ericsson Telefon Ab L M Förfarande att lokalisera en mobilstation i ett mobiltelefonsystem
JPH05292012A (ja) * 1992-04-07 1993-11-05 Nec Corp 移動体通信システムの輻輳制御方式
TW214620B (en) 1992-04-13 1993-10-11 Ericsson Ge Mobile Communicat Calling channel in CDMA communications system
EP0566551B1 (de) * 1992-04-17 1999-08-04 Telefonaktiebolaget L M Ericsson Mobil unterstütztes Weiterreichen mit Kodemultiplex-Vielfachzugriff
FI96157C (fi) * 1992-04-27 1996-05-10 Nokia Mobile Phones Ltd Digitaalinen, solukkorakenteinen aikajakokanavointiin perustuva radiopuhelinverkko radioyhteyden siirtämiseksi tukiasemalta uudelle tukiasemalle
US5367559A (en) * 1992-05-11 1994-11-22 Hughes Aircraft Company Sequential power estimation for cellular system handoff
US5408516A (en) * 1992-05-15 1995-04-18 Dassault Automatismes Et Telecommunications Device and method for telephony interconnection intended to offer continuity of service to independent stations in a communications network
US5712868A (en) * 1992-06-30 1998-01-27 Motorola, Inc. Dual mode communication network
WO1994001974A1 (en) * 1992-07-01 1994-01-20 Motorola Inc. A method of performing mobile assisted hand-off in a communication system
DE69326656T2 (de) * 1992-07-17 2000-05-31 Sun Microsystems Inc Verfahren und Gerät zur Selbstorganisation in einem drahtlosen lokalen Netz
EP0614598B1 (de) * 1992-08-11 1999-03-17 Telefonaktiebolaget Lm Ericsson Umordnung von kanälen
DE69332431T2 (de) * 1992-09-08 2003-06-18 Sun Microsystems Inc Verfahren und Vorrichtung zur Verbindungsmöglichkeitserhaltung von Knoten in einem drahtlosen lokalen Netz
US5423064A (en) * 1992-10-13 1995-06-06 Fujitsu Limited Received signal strength indicator level monitor circuit for digital mobile communication system
JP3012414B2 (ja) * 1992-10-23 2000-02-21 日本電気通信システム株式会社 制御チャネル干渉検出方式
US5491741A (en) * 1992-10-23 1996-02-13 At&T Corp. Prioritizing a multiple access channel in a wireless telephone system
US5396541A (en) * 1992-10-23 1995-03-07 At&T Corp. Call handoff in a wireless telephone system
JP3372612B2 (ja) * 1992-11-09 2003-02-04 キヤノン株式会社 デジタルコードレス電話システム
MX9307243A (es) * 1992-11-24 1994-05-31 Ericsson Telefon Ab L M Reintento analogico.
SE9300681D0 (sv) * 1993-03-01 1993-03-01 Ericsson Telefon Ab L M A method and an apparatusfor handing off a mobile station from a first to a second channel in a mobile communication system
US5375123A (en) * 1993-02-05 1994-12-20 Telefonakitebolaget L. M. Ericsson Allocation of channels using interference estimation
DE4304095B4 (de) * 1993-02-11 2005-08-25 Philips Intellectual Property & Standards Gmbh Mobilfunksystem
US6009309A (en) * 1993-05-04 1999-12-28 Motorola, Inc. Method of operation a combination radiotelephone and paging device and method of operation
US5526398A (en) * 1993-05-04 1996-06-11 Motorola, Inc. Method of operating a combination radiotelephone and paging device
FI94817C (fi) * 1993-06-10 1995-10-25 Nokia Telecommunications Oy Puheendekoodausmenetelmä ja puheendekoodain
TW306102B (de) * 1993-06-14 1997-05-21 Ericsson Telefon Ab L M
EP0659326B1 (de) * 1993-06-14 2002-09-04 Telefonaktiebolaget Lm Ericsson Übertragungszeitjustierung in der abwärtsverbindung eines systems mit kodemultiplex-vielfachzugriff
SE518014C2 (sv) * 1993-06-25 2002-08-13 Motorola Inc Mobilsystem och metod för användning och överlämning mellan smalbandig och bredbandig kommunikation
US5493563A (en) * 1993-07-26 1996-02-20 Motorola, Inc. Method and apparatus for mobile assisted handoff in a communication system
US5483664A (en) * 1993-07-26 1996-01-09 Motorola, Inc. Cellular communications with scheduled handoffs
US5517674A (en) * 1993-08-09 1996-05-14 Telefonaktiebolaget Lm Ericsson Low capacity mobile assisted handoff in a cellular communications network
US6094575A (en) * 1993-11-01 2000-07-25 Omnipoint Corporation Communication system and method
US6005856A (en) * 1993-11-01 1999-12-21 Omnipoint Corporation Communication protocol for spread spectrum wireless communication system
US6301242B1 (en) 1998-07-24 2001-10-09 Xircom Wireless, Inc. Communication system with fast control traffic
US6088590A (en) * 1993-11-01 2000-07-11 Omnipoint Corporation Method and system for mobile controlled handoff and link maintenance in spread spectrum communication
WO1995012945A1 (en) * 1993-11-01 1995-05-11 Omnipoint Corporation Despreading/demodulating direct sequence spread spectrum signals
US7885242B2 (en) 1993-12-23 2011-02-08 Broadcom Corp. Enhanced mobility and address resolution in a wireless premises based network
US5673307A (en) * 1994-02-17 1997-09-30 Spectralink Corporation Handoff method for indoor cellular phone system
US5448569A (en) * 1994-04-12 1995-09-05 International Business Machines Corporation Handoff monitoring in cellular communication networks using slow frequency hopping
FI111580B (fi) * 1994-06-13 2003-08-15 Nokia Corp Tehonsäätömenetelmä ja -järjestely handoverin yhteydessä matkaviestinjärjestelmässä
US5521963A (en) * 1994-09-08 1996-05-28 Siemens Stromberg-Carlson System and method for using integrated services digital networks (ISDN) and the call appearance call handling (CACH) feature of electronic key telephone service (EKTS) technology for mobile systems
US5757847A (en) 1994-09-09 1998-05-26 Omnipoint Corporation Method and apparatus for decoding a phase encoded signal
US5832028A (en) * 1994-09-09 1998-11-03 Omnipoint Corporation Method and apparatus for coherent serial correlation of a spread spectrum signal
US5610940A (en) * 1994-09-09 1997-03-11 Omnipoint Corporation Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal
US5629956A (en) * 1994-09-09 1997-05-13 Omnipoint Corporation Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal
US5953370A (en) * 1994-09-09 1999-09-14 Omnipoint Corporation Apparatus for receiving and correlating a spread spectrum signal
US5692007A (en) * 1994-09-09 1997-11-25 Omnipoint Corporation Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation
US5881100A (en) 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent correlation of a spread spectrum signal
US5627856A (en) * 1994-09-09 1997-05-06 Omnipoint Corporation Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators
US5754585A (en) 1994-09-09 1998-05-19 Omnipoint Corporation Method and apparatus for serial noncoherent correlation of a spread spectrum signal
US5963586A (en) 1994-09-09 1999-10-05 Omnipoint Corporation Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
US5659574A (en) * 1994-09-09 1997-08-19 Omnipoint Corporation Multi-bit correlation of continuous phase modulated signals
US5856998A (en) * 1994-09-09 1999-01-05 Omnipoint Corporation Method and apparatus for correlating a continuous phase modulated spread spectrum signal
US5754584A (en) * 1994-09-09 1998-05-19 Omnipoint Corporation Non-coherent spread-spectrum continuous-phase modulation communication system
US5606560A (en) * 1994-09-23 1997-02-25 Motorola, Inc. Between a base station and a portable device
US5697055A (en) * 1994-10-16 1997-12-09 Qualcomm Incorporated Method and apparatus for handoff between different cellular communications systems
US5893037A (en) * 1994-12-09 1999-04-06 Eastman Kodak Company Combined electronic/silver-halide image capture system with cellular transmission capability
US5701585A (en) * 1994-12-12 1997-12-23 Telefonaktiebolaget Lm Ericsson Mobile assisted handoff
CN1141102A (zh) * 1994-12-19 1997-01-22 摩托罗拉公司 在通信系统中减轻干扰的方法和装置
US6035197A (en) 1994-12-29 2000-03-07 Cellco Partnership Method and system for providing a handoff from a CDMA cellular telephone system
US5883899A (en) * 1995-05-01 1999-03-16 Telefonaktiebolaget Lm Ericsson Code-rate increased compressed mode DS-CDMA systems and methods
US5896368A (en) * 1995-05-01 1999-04-20 Telefonaktiebolaget Lm Ericsson Multi-code compressed mode DS-CDMA systems and methods
GB9510861D0 (en) * 1995-05-30 1995-07-26 Hong Kong Telecom Csl Limited Handover arrangements for digital cellular telephone networks
US6418324B1 (en) 1995-06-01 2002-07-09 Padcom, Incorporated Apparatus and method for transparent wireless communication between a remote device and host system
US5802046A (en) * 1995-06-05 1998-09-01 Omnipoint Corporation Efficient time division duplex communication system with interleaved format and timing adjustment control
US5745484A (en) 1995-06-05 1998-04-28 Omnipoint Corporation Efficient communication system using time division multiplexing and timing adjustment control
US5689502A (en) * 1995-06-05 1997-11-18 Omnipoint Corporation Efficient frequency division duplex communication system with interleaved format and timing adjustment control
US5959980A (en) 1995-06-05 1999-09-28 Omnipoint Corporation Timing adjustment control for efficient time division duplex communication
US6041046A (en) * 1995-07-14 2000-03-21 Omnipoint Corporation Cyclic time hopping in time division multiple access communication system
US5915221A (en) * 1995-08-08 1999-06-22 Telefonaktiebolaget Lm Ericsson Neighbor cell list creation and verification in a telecommunications system
US5839070A (en) * 1995-10-13 1998-11-17 Telefonaktiebolaget Lm Ericsson (Publ) System and method for hyperband cell interoperability in a cellular telecommunications network
KR0164381B1 (ko) * 1995-12-30 1999-02-01 김광호 디지탈 무선 통신시스템의 자동 주파수 조절회로
US5740535A (en) * 1996-01-19 1998-04-14 Telefonaktiebolaget L M Ericsson (Publ) Adaptive mobile station presence verification
US6006092A (en) * 1996-02-22 1999-12-21 Telefonaktiebolaget Lm Ericsson Quality driven voice channel selection in a cellular telephone system using idle voice channel signal strength measurements
GB2314732A (en) * 1996-06-27 1998-01-07 Motorola Ltd Congestion relief for cellular radio communication systems
US6108322A (en) * 1996-06-28 2000-08-22 Motorola, Inc. Method of enabling handoff
US6473602B1 (en) 1996-10-28 2002-10-29 Ericsson Inc. Mobile assisted handoff in radiocommunication systems
US5873046A (en) * 1996-12-11 1999-02-16 Lucent Technologies Inc. System for communicating in analog or digital mode and mobile station employing the same
US5940761A (en) 1997-01-15 1999-08-17 Qaulcomm Incorporated Method and apparatus for performing mobile assisted hard handoff between communication systems
US5999816A (en) * 1997-02-18 1999-12-07 Qualcomm Incorporated Method and apparatus for performing mobile assisted hard handoff between communication systems
US6044272A (en) 1997-02-25 2000-03-28 Sbc Technology Resources, Inc. Mobile assisted handoff system and method
US6272121B1 (en) * 1997-03-03 2001-08-07 Omnipoint Corporation Spread spectrum communication system using DECT protocol
US6141555A (en) * 1997-06-09 2000-10-31 Nec Corporation Cellular communication system, and mobile and base stations used in the same
FI109861B (fi) 1998-01-05 2002-10-15 Nokia Corp Menetelmä solun yleislähetyskapasiteetin tehokkaaksi hyödyntämiseksi
US6115607A (en) * 1998-01-30 2000-09-05 Qualcomm Incorporated Method and apparatus for reducing messaging traffic in a wireless communication system
DE19841464C2 (de) * 1998-09-10 2002-03-14 Siemens Ag Verfahren und Funk-Kommunikationssystem zum Bereitstellen eines Organisationskanals
US6453156B1 (en) 1998-09-24 2002-09-17 Ericsson Inc. Scanning radio receiver for a wireless communication system
US7136645B2 (en) 1998-10-09 2006-11-14 Netmotion Wireless, Inc. Method and apparatus for providing mobile and other intermittent connectivity in a computing environment
US8060656B2 (en) * 1998-10-09 2011-11-15 Netmotion Wireless, Inc. Method and apparatus for providing mobile and other intermittent connectivity in a computing environment
US8078727B2 (en) 1998-10-09 2011-12-13 Netmotion Wireless, Inc. Method and apparatus for providing mobile and other intermittent connectivity in a computing environment
US7293107B1 (en) 1998-10-09 2007-11-06 Netmotion Wireless, Inc. Method and apparatus for providing mobile and other intermittent connectivity in a computing environment
US7778260B2 (en) 1998-10-09 2010-08-17 Netmotion Wireless, Inc. Method and apparatus for providing mobile and other intermittent connectivity in a computing environment
GB2347828B (en) * 1999-03-05 2004-05-19 Internat Mobile Satellite Orga Communication methods and apparatus
US6947469B2 (en) 1999-05-07 2005-09-20 Intel Corporation Method and Apparatus for wireless spread spectrum communication with preamble processing period
CN1148008C (zh) * 1999-05-21 2004-04-28 西门子公司 移动无线信号的滤波方法及相应的移动无线接收机
US7882247B2 (en) 1999-06-11 2011-02-01 Netmotion Wireless, Inc. Method and apparatus for providing secure connectivity in mobile and other intermittent computing environments
US6377805B1 (en) 1999-08-04 2002-04-23 International Business Machines Corporation Maintaining data communication through neighboring mobile units during handoff
US7388918B2 (en) * 2000-03-13 2008-06-17 Texas Instruments Incorporated Apparatus and method for the transparent upgrading of technology and applications in digital radio systems using programmable transmitters and receivers
US6760599B1 (en) * 2000-09-29 2004-07-06 Arraycomm, Inc. Method and apparatus for selecting a base station
US6701150B1 (en) * 2000-10-13 2004-03-02 Nortel Networks Limited Network driven cell switching and handoff with load balancing for wireless systems
GB0104830D0 (en) * 2001-02-27 2001-04-18 Koninkl Philips Electronics Nv Radio communication system
US7644171B2 (en) 2001-09-12 2010-01-05 Netmotion Wireless, Inc. Mobile networking system and method using IPv4 and IPv6
US7062786B2 (en) 2002-04-09 2006-06-20 Diving Unlimited International, Inc., A California Corporation Garment with releasable water-tight seal for neck and limbs
CN1276606C (zh) * 2002-06-10 2006-09-20 华为技术有限公司 一种基于蜂窝高速分组接入网的小区切换方法
US8699990B2 (en) * 2003-03-11 2014-04-15 Motorola Mobility Llc Location requests and measurement responses in wireless communications networks and methods
US8509776B2 (en) 2007-12-19 2013-08-13 Motorola Mobility Llc Network initiated proactive handover procedure for fast moving wireless devices

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916108A (en) * 1973-11-09 1975-10-28 Multiplex Communicat Inc Tdm communication system with centralized time slot address distribution
US4504946A (en) * 1982-06-11 1985-03-12 Rca Corporation Time division multiple access communication systems
US4475010A (en) * 1983-05-05 1984-10-02 At&T Bell Laboratories High density cellular mobile radio communications
DE3574217D1 (en) * 1984-07-13 1989-12-14 Motorola Inc Cellular voice and data radiotelephone system
DE3511430A1 (de) * 1985-03-29 1986-10-02 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren zur synchronisierung der empfangseinrichtungen in einem digitalen multiplex-uebertragungssystem
DE3527330A1 (de) * 1985-07-31 1987-02-05 Philips Patentverwaltung Digitales funkuebertragungssystem mit verbindungsbegleitenden organisationskanal im zeitmultiplexrahmen
DE3527329A1 (de) * 1985-07-31 1987-02-05 Philips Patentverwaltung Digitales funkuebertragungssystem mit variabler zeitschlitzdauer der zeitschlitze im zeitmultiplexrahmen
US4876740A (en) * 1985-08-30 1989-10-24 Motorola, Inc. Radiotelephone system employing digitized speech/data signalling
DE3607687A1 (de) * 1986-03-08 1987-09-10 Philips Patentverwaltung Verfahren und schaltungsanordnung zum weiterschalten einer funkverbindung in eine andere funkzelle eines digitalen funkuebertragungssystems
EP0261127B2 (de) * 1986-03-25 2005-07-20 Motorola, Inc. Zeitmultiplexkommunikationssystem zur leistungsfähigen ausnutzung des spektrums
CA1297568C (en) * 1986-09-29 1992-03-17 Nec Corporation Multiplexer/demultiplexer circuitry for lsi implementation
SG30616G (en) * 1987-01-02 1995-09-01 Motorola Inc System for over-the-air reprogramming of communication receivers
DE3885270T2 (de) * 1987-02-02 1994-02-17 Motorola Inc Vielfachzugriffsübertragungssystem im zeitmultiplex mit adaptiver entzerrung.
US4785450B1 (en) * 1987-08-06 1999-10-12 Interdigital Tech Corp Apparatus and method for obtaining frequency agility in digital communication system
EP0318033B1 (de) * 1987-11-27 1995-09-13 Nec Corporation Verfahren zum Umschalten in einem digitalen Zellularmobilkommunikationssystem und mobile Einheit
US4914649A (en) * 1988-09-12 1990-04-03 Motorola, Inc. Multiple frequency message system

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NZ233866A (en) 1992-10-28
PH26898A (en) 1992-12-03
KR920702109A (ko) 1992-08-12
BR9006823A (pt) 1991-08-06
CA2033971A1 (en) 1990-12-27
CA2033340A1 (en) 1990-12-27
EP0406186B1 (de) 1995-09-13
EP0406193A2 (de) 1991-01-02
CN1021758C (zh) 1993-08-04
CN1048472A (zh) 1991-01-09
WO1991000658A1 (en) 1991-01-10
CA2033971C (en) 1999-11-09
MY105834A (en) 1995-01-30
HK180295A (en) 1995-12-01
AU5934090A (en) 1991-01-17
NZ233770A (en) 1992-09-25
CA2033340C (en) 1999-07-27
AR247321A1 (es) 1994-11-30
KR970002756B1 (ko) 1997-03-10
MY106870A (en) 1995-08-30
DE69021794D1 (de) 1995-09-28
JPH04500446A (ja) 1992-01-23
AU625085B2 (en) 1992-07-02
WO1991000657A1 (en) 1991-01-10
EP0406186A3 (en) 1992-03-04
KR920702110A (ko) 1992-08-12
DE69021794T2 (de) 1996-02-22
KR970009704B1 (ko) 1997-06-17
AU626123B2 (en) 1992-07-23
EP0406193B1 (de) 1995-08-23
DE69022307D1 (de) 1995-10-19
JP2799245B2 (ja) 1998-09-17
EP0406186A2 (de) 1991-01-02
AU5969890A (en) 1991-01-17
DE69022307T2 (de) 1996-02-08
SA90100320B1 (ar) 2004-08-07
BR9006824A (pt) 1992-10-06
EP0406193A3 (en) 1992-03-04
JP2799244B2 (ja) 1998-09-17
JPH04500448A (ja) 1992-01-23
US5042082A (en) 1991-08-20

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