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CA970487A - Reference station automatic replacement system for a transmission system through satellite - Google Patents

Reference station automatic replacement system for a transmission system through satellite

Info

Publication number
CA970487A
CA970487A CA121,465A CA121465A CA970487A CA 970487 A CA970487 A CA 970487A CA 121465 A CA121465 A CA 121465A CA 970487 A CA970487 A CA 970487A
Authority
CA
Canada
Prior art keywords
satellite
reference station
automatic replacement
station automatic
transmission system
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
CA121,465A
Other languages
English (en)
Other versions
CA121465S (en
Inventor
Gabriele Bernasconi
Isidoro Poretti
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.)
Italtel SpA
Original Assignee
Societa Italiana Telecomunicazioni Siemens SpA
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 Societa Italiana Telecomunicazioni Siemens SpA filed Critical Societa Italiana Telecomunicazioni Siemens SpA
Application granted granted Critical
Publication of CA970487A publication Critical patent/CA970487A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2125—Synchronisation
    • H04B7/2126—Synchronisation using a reference station
    • H04B7/2128—Changing of the reference station

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
CA121,465A 1970-12-17 1971-08-26 Reference station automatic replacement system for a transmission system through satellite Expired CA970487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3313370 1970-12-17

Publications (1)

Publication Number Publication Date
CA970487A true CA970487A (en) 1975-07-01

Family

ID=11236638

Family Applications (1)

Application Number Title Priority Date Filing Date
CA121,465A Expired CA970487A (en) 1970-12-17 1971-08-26 Reference station automatic replacement system for a transmission system through satellite

Country Status (11)

Country Link
US (1) US3761814A (xx)
AU (1) AU455389B2 (xx)
BE (1) BE774415A (xx)
CA (1) CA970487A (xx)
CH (1) CH541259A (xx)
DE (1) DE2159384A1 (xx)
ES (1) ES395091A1 (xx)
FR (1) FR2111113A5 (xx)
GB (1) GB1349658A (xx)
NL (1) NL7117417A (xx)
SE (1) SE370833B (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1037853B (it) * 1974-05-21 1979-11-20 Licentia Gmbh Procedimento e disposizione dei circuiti per la sincronizzazione di quadri di impulsi nella trasmissione delle informazioni secondo il sistema multiplex a divisione di tempo attraverso satelliti di telecomunicazione
US4054753A (en) * 1975-10-20 1977-10-18 Digital Communications Corporation Double sync burst TDMA system
FR2436535A1 (fr) * 1978-09-15 1980-04-11 Ibm France Procede et systeme de synchronisation d'un reseau de communication a acces multiple par repartition dans le temps et utilisant un satellite ayant plusieurs antennes a faisceau directif sur des frequences differentes
CA1166366A (en) * 1979-10-17 1984-04-24 John W. Fennel, Jr. Baton passing method and apparatus for maintaining synchronization in a tdma satellite communication 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
US4574379A (en) * 1983-06-16 1986-03-04 At&T Bell Laboratories Synchronization technique for non-colocated TV signals in a TDMA satellite communication system
CA1262382A (en) * 1984-05-10 1989-10-17 Nec Corporation Station relief arrangement for use in relieving operation of a reference station in a tdma network without reduction of frame availability
US4688217A (en) * 1984-08-31 1987-08-18 Nec Corporation Method of implementing burst acquisition control in TDMA system
JPH0618337B2 (ja) * 1988-02-23 1994-03-09 日本電気株式会社 衛星通信方式
US6728535B2 (en) 2001-05-02 2004-04-27 The Boeing Company Fail-over of forward link equipment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683116A (en) * 1969-07-16 1972-08-08 Communications Satellite Corp Terrestrial interface unit

Also Published As

Publication number Publication date
DE2159384A1 (de) 1972-07-13
ES395091A1 (es) 1974-12-01
CH541259A (it) 1973-08-31
AU455389B2 (en) 1974-11-21
FR2111113A5 (xx) 1972-06-02
SE370833B (xx) 1974-10-28
GB1349658A (en) 1974-04-10
BE774415A (fr) 1972-02-14
AU3683571A (en) 1973-06-21
NL7117417A (xx) 1972-06-20
US3761814A (en) 1973-09-25

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