DE68920892D1 - Verfahren und Vorrichtung zur Funkfrequenzumschaltung. - Google Patents

Verfahren und Vorrichtung zur Funkfrequenzumschaltung.

Info

Publication number
DE68920892D1
DE68920892D1 DE68920892T DE68920892T DE68920892D1 DE 68920892 D1 DE68920892 D1 DE 68920892D1 DE 68920892 T DE68920892 T DE 68920892T DE 68920892 T DE68920892 T DE 68920892T DE 68920892 D1 DE68920892 D1 DE 68920892D1
Authority
DE
Germany
Prior art keywords
radio frequency
frequency switching
switching
radio
frequency
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.)
Expired - Lifetime
Application number
DE68920892T
Other languages
English (en)
Other versions
DE68920892T2 (de
Inventor
Koji Tokunaga
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE68920892D1 publication Critical patent/DE68920892D1/de
Publication of DE68920892T2 publication Critical patent/DE68920892T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2621—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using frequency division multiple access [FDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
DE68920892T 1988-02-25 1989-02-24 Verfahren und Vorrichtung zur Funkfrequenzumschaltung. Expired - Lifetime DE68920892T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63040700A JP2852045B2 (ja) 1988-02-25 1988-02-25 無線周波数切替方法

Publications (2)

Publication Number Publication Date
DE68920892D1 true DE68920892D1 (de) 1995-03-16
DE68920892T2 DE68920892T2 (de) 1995-09-21

Family

ID=12587848

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68920892T Expired - Lifetime DE68920892T2 (de) 1988-02-25 1989-02-24 Verfahren und Vorrichtung zur Funkfrequenzumschaltung.

Country Status (4)

Country Link
US (1) US5111535A (de)
EP (1) EP0330222B1 (de)
JP (2) JP2852045B2 (de)
DE (1) DE68920892T2 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03268697A (ja) * 1990-03-19 1991-11-29 Fujitsu Ltd 移動無線通信方式
DE69130973T2 (de) * 1990-09-11 1999-07-29 Nec Corp Schnurlose Reihenanlage mit Zonen-Umschaltfunktion
CA2094710C (en) * 1990-10-23 1998-12-01 Robert Clyde Dixon Method and apparatus for establishing spread spectrum communications
US5359595A (en) * 1991-01-09 1994-10-25 Rockwell International Corporation Skywave adaptable network transceiver apparatus and method using a stable probe and traffic protocol
US5402413A (en) * 1991-04-08 1995-03-28 Omnipoint Corporation Three-cell wireless communication system
US5887020A (en) * 1991-05-13 1999-03-23 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
US5790587A (en) * 1991-05-13 1998-08-04 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5694414A (en) * 1991-05-13 1997-12-02 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5285469A (en) 1991-06-03 1994-02-08 Omnipoint Data Corporation Spread spectrum wireless telephone system
JPH0537435A (ja) * 1991-07-31 1993-02-12 Nec Corp Ｔｄｍａ方式に用いる局部発振周波数シンセサイザ
JP2900680B2 (ja) * 1992-02-21 1999-06-02 日本電気株式会社 無線電話装置
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
FR2699769A1 (fr) * 1992-12-21 1994-06-24 Electro Informatiques Eur Et Procédé pour optimiser le choix des fréquences dans une transmission radioélectrique à fréquences variables, et équipements pour sa mise en Óoeuvre.
FR2706707B1 (fr) * 1993-06-11 1995-08-04 Sagem Système de communication radio entre les véhicules d'une flotte et des relais.
US6005856A (en) * 1993-11-01 1999-12-21 Omnipoint Corporation Communication protocol for spread spectrum wireless communication system
US6088590A (en) * 1993-11-01 2000-07-11 Omnipoint Corporation Method and system for mobile controlled handoff and link maintenance in spread spectrum communication
US6094575A (en) * 1993-11-01 2000-07-25 Omnipoint Corporation Communication system and method
US6301242B1 (en) 1998-07-24 2001-10-09 Xircom Wireless, Inc. Communication system with fast control traffic
US5553243A (en) * 1994-01-07 1996-09-03 Ericsson Ge Mobile Communications Inc. Method and apparatus for determining with high resolution the fidelity of information received on a communications channel
FI95974C (fi) * 1994-06-02 1996-04-10 Nokia Telecommunications Oy Menetelmä vastaanotettavan lähetteen valitsemiseksi matkaviestinjärjestelmässä ja matkaviestin
US5930679A (en) * 1994-10-03 1999-07-27 Motorola, Inc. Satellite-based ring alert apparatus and method of use
US5586338A (en) * 1994-12-22 1996-12-17 Bell Atlantic Mobile Systems, Inc. System identification (SID) list for selecting operating frequencies
US5613204A (en) * 1994-12-22 1997-03-18 Bell Atlantic Mobile Systems, Inc. Beacon system for roaming cellular stations
US5784403A (en) * 1995-02-03 1998-07-21 Omnipoint Corporation Spread spectrum correlation using saw device
US5959980A (en) 1995-06-05 1999-09-28 Omnipoint Corporation Timing adjustment control for efficient time division duplex communication
US5689502A (en) * 1995-06-05 1997-11-18 Omnipoint Corporation Efficient frequency division duplex communication system with interleaved format and timing adjustment control
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
US6041046A (en) * 1995-07-14 2000-03-21 Omnipoint Corporation Cyclic time hopping in time division multiple access communication system
GB2314734B (en) * 1996-06-28 2000-11-01 Motorola Ltd Method and apparatus for monitoring channels
DE19647629C2 (de) * 1996-11-18 1998-09-03 Siemens Ag Verfahren und Basisstationssystem zur Konfigurierung einer Funkschnittstelle zwischen einer Mobilstation und einer Basisstation eines Zeitmultiplex-Mobilfunksystems für eine Paketdatenübertragung
UA53669C2 (uk) 1996-11-18 2003-02-17 Сіменс Акцієнгезельшафт Спосіб та система базової станції для конфігурування радіоінтерфейсу між мобільною станцією та базовою станцією мобільної радіосистеми пакетної передачі даних з часовим мультиплексуванням
US6778556B1 (en) * 1997-01-15 2004-08-17 Gwcom, Inc. Asymmetrical data rates and power in wireless digital communication
JP3383618B2 (ja) 1999-08-18 2003-03-04 松下電器産業株式会社 移動体通信端末装置及び受信強度検出方法
WO2002100014A1 (fr) * 2001-05-30 2002-12-12 Mitsubishi Denki Kabushiki Kaisha Terminal de communication radio et procede de demodulation
WO2005069905A2 (en) * 2004-01-16 2005-08-04 Ghz Tr Corporation Methods and apparatus for automotive radar sensors
WO2006010958A2 (en) 2004-07-30 2006-02-02 Andrew Richardson Power control in a local network node (lnn)
WO2006010957A2 (en) * 2004-07-30 2006-02-02 Andrew Richardson Signal transmission method from a local network node
JP4695893B2 (ja) 2005-02-17 2011-06-08 パナソニック株式会社 測定期間の決定方法
US9704385B2 (en) * 2010-11-24 2017-07-11 St. Jude Medical Ab Implantable medical device adapted for radio frequency telemetry with frequency hopping

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58187033A (ja) * 1982-04-26 1983-11-01 Nippon Telegr & Teleph Corp <Ntt> 移動通信制御方式
US4545071A (en) * 1982-11-12 1985-10-01 Motorola, Inc. Portable radio for a zoned data communications system communicating message signals between portable radios and a host computer
DE3447107A1 (de) * 1984-12-22 1986-06-26 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren zur nachrichtenuebertragung in einem digitalen funkuebertragungssystem
DE3607687A1 (de) * 1986-03-08 1987-09-10 Philips Patentverwaltung Verfahren und schaltungsanordnung zum weiterschalten einer funkverbindung in eine andere funkzelle eines digitalen funkuebertragungssystems
US4723266A (en) * 1987-01-21 1988-02-02 General Electric Company Cellular communication system sharing control channels between cells to reduce number of control channels
US4797947A (en) * 1987-05-01 1989-01-10 Motorola, Inc. Microcellular communications system using macrodiversity
EP0318033B1 (de) * 1987-11-27 1995-09-13 Nec Corporation Verfahren zum Umschalten in einem digitalen Zellularmobilkommunikationssystem und mobile Einheit
JPH0622345B2 (ja) * 1988-01-14 1994-03-23 東京電力株式会社 移動体通信方式
US4887265A (en) * 1988-03-18 1989-12-12 Motorola, Inc. Packet-switched cellular telephone system

Also Published As

Publication number Publication date
EP0330222A3 (de) 1991-04-10
EP0330222A2 (de) 1989-08-30
JPH1198072A (ja) 1999-04-09
DE68920892T2 (de) 1995-09-21
JPH01218135A (ja) 1989-08-31
EP0330222B1 (de) 1995-02-01
JP2852045B2 (ja) 1999-01-27
US5111535A (en) 1992-05-05

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Legal Events

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8364 No opposition during term of opposition