JPS643100B2 - - Google Patents

Info

Publication number
JPS643100B2
JPS643100B2 JP58043801A JP4380183A JPS643100B2 JP S643100 B2 JPS643100 B2 JP S643100B2 JP 58043801 A JP58043801 A JP 58043801A JP 4380183 A JP4380183 A JP 4380183A JP S643100 B2 JPS643100 B2 JP S643100B2
Authority
JP
Japan
Prior art keywords
transmission
synchronization
transmission burst
detection
time
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
Application number
JP58043801A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59169229A (ja
Inventor
Shinichiro Aoki
Ryushiro Yoshizawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP58043801A priority Critical patent/JPS59169229A/ja
Priority to DE8484301774T priority patent/DE3478377D1/de
Priority to EP84301774A priority patent/EP0119841B1/en
Priority to US06/589,944 priority patent/US4597079A/en
Publication of JPS59169229A publication Critical patent/JPS59169229A/ja
Publication of JPS643100B2 publication Critical patent/JPS643100B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
JP58043801A 1983-03-16 1983-03-16 二重化切換制御方式 Granted JPS59169229A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP58043801A JPS59169229A (ja) 1983-03-16 1983-03-16 二重化切換制御方式
DE8484301774T DE3478377D1 (en) 1983-03-16 1984-03-15 Redundant switchover system for a tdma satellite communication equipment
EP84301774A EP0119841B1 (en) 1983-03-16 1984-03-15 Redundant switchover system for a tdma satellite communication equipment
US06/589,944 US4597079A (en) 1983-03-16 1984-03-15 Redundant switchover system for TDMA satellite communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58043801A JPS59169229A (ja) 1983-03-16 1983-03-16 二重化切換制御方式

Publications (2)

Publication Number Publication Date
JPS59169229A JPS59169229A (ja) 1984-09-25
JPS643100B2 true JPS643100B2 (OSRAM) 1989-01-19

Family

ID=12673847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58043801A Granted JPS59169229A (ja) 1983-03-16 1983-03-16 二重化切換制御方式

Country Status (4)

Country Link
US (1) US4597079A (OSRAM)
EP (1) EP0119841B1 (OSRAM)
JP (1) JPS59169229A (OSRAM)
DE (1) DE3478377D1 (OSRAM)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825435A (en) * 1985-11-08 1989-04-25 Digital Equipment Corp. Multiport repeater
JPS62253231A (ja) * 1986-01-07 1987-11-05 Fujitsu Ltd 現用予備切換システム
JPH0712161B2 (ja) * 1986-11-28 1995-02-08 日本電気株式会社 多方向多重通信システム
CA1304841C (en) * 1987-11-30 1992-07-07 Shigeru Sugihara Frame-interval fault detection in a demand assignment tdma communication system
US4964105A (en) * 1988-11-01 1990-10-16 Dsc Communications Corporation Replacement switch
GB9026932D0 (en) * 1990-12-12 1991-01-30 Plessey Telecomm Tdma ranging
JPH05114905A (ja) * 1991-04-08 1993-05-07 Digital Equip Corp <Dec> 単一アドレス及びプロトコール・テーブル・ブリツジを使用したメツセージの処置フイルタリング
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
BR9407157A (pt) 1993-07-30 1996-09-17 Int Multi Media Corp Aparelho de telecomunicações processo de comunicações e estação retransmissora para um sistema de telecommunicações sub- orbital em altitude elevada
US20030236070A1 (en) 2002-06-25 2003-12-25 Seligsohn Sherwin I. Sub-orbital, high altitude communications system
US5663957A (en) * 1995-07-12 1997-09-02 Ericsson Inc. Dual mode satellite/cellular terminal
DE19728061C2 (de) * 1997-07-01 2002-10-24 Deutsche Telekom Ag Verfahren zur Steuerung der Nutzung von Satelliten-Übertragungskapazität zum Ersetzen gestörter Datenleitungen in terrestrischen Netzen und Schaltungsanordnung zur Durchführung des Verfahrens
JP3602962B2 (ja) * 1998-03-12 2004-12-15 富士通株式会社 伝送装置
US6327243B1 (en) * 1998-08-03 2001-12-04 Samsung Electronics Co., Ltd. System and method for performing a seamless switchover from a primary packet router to a secondary packet router
US6249677B1 (en) * 1998-11-30 2001-06-19 Hughes Electronics Corporation Apparatus and method for delivering key information of a channel request message from a user terminal to a network

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2158836B1 (de) * 1971-11-26 1973-02-01 Siemens Ag, 1000 Berlin U. 8000 Muenchen Meßanordnung zur Erfassung der Bitfehlerrate und der Burstausfallrate in TDMA Systemen
US4054753A (en) * 1975-10-20 1977-10-18 Digital Communications Corporation Double sync burst TDMA system
US4397018A (en) * 1979-10-17 1983-08-02 Ibm Corporation Baton passing method and apparatus for maintaining synchronization in a TDMA satellite communication system

Also Published As

Publication number Publication date
US4597079A (en) 1986-06-24
DE3478377D1 (en) 1989-06-29
JPS59169229A (ja) 1984-09-25
EP0119841B1 (en) 1989-05-24
EP0119841A3 (en) 1985-11-21
EP0119841A2 (en) 1984-09-26

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