[go: up one dir, main page]

DE68918727D1 - Satellitennachrichtübertragungssystem mit Vielfachzugriff und Ersatzzentralstation. - Google Patents

Satellitennachrichtübertragungssystem mit Vielfachzugriff und Ersatzzentralstation.

Info

Publication number
DE68918727D1
DE68918727D1 DE68918727T DE68918727T DE68918727D1 DE 68918727 D1 DE68918727 D1 DE 68918727D1 DE 68918727 T DE68918727 T DE 68918727T DE 68918727 T DE68918727 T DE 68918727T DE 68918727 D1 DE68918727 D1 DE 68918727D1
Authority
DE
Germany
Prior art keywords
multiple access
communications system
central station
satellite communications
access satellite
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 - Fee Related
Application number
DE68918727T
Other languages
English (en)
Other versions
DE68918727T2 (de
Inventor
Hizuru Nawata
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 DE68918727D1 publication Critical patent/DE68918727D1/de
Publication of DE68918727T2 publication Critical patent/DE68918727T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radio Relay Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
DE68918727T 1988-02-23 1989-02-22 Satellitennachrichtübertragungssystem mit Vielfachzugriff und Ersatzzentralstation. Expired - Fee Related DE68918727T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63040426A JPH0618337B2 (ja) 1988-02-23 1988-02-23 衛星通信方式

Publications (2)

Publication Number Publication Date
DE68918727D1 true DE68918727D1 (de) 1994-11-17
DE68918727T2 DE68918727T2 (de) 1995-02-16

Family

ID=12580327

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68918727T Expired - Fee Related DE68918727T2 (de) 1988-02-23 1989-02-22 Satellitennachrichtübertragungssystem mit Vielfachzugriff und Ersatzzentralstation.

Country Status (6)

Country Link
US (1) US4947451A (de)
EP (1) EP0330178B1 (de)
JP (1) JPH0618337B2 (de)
AU (1) AU610467B2 (de)
CA (1) CA1301379C (de)
DE (1) DE68918727T2 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2595603B2 (ja) * 1988-01-11 1997-04-02 日本電気株式会社 要求割付多元接続制御方式
JPH0362630A (ja) * 1989-07-31 1991-03-18 Nec Eng Ltd 衛星通信方式
US5093958A (en) * 1990-05-30 1992-03-10 Lloyd Levine Automobile floor mat anchoring system
JP3034282B2 (ja) * 1990-07-12 2000-04-17 株式会社東芝 非同期型移動無線通信システム
NL9002401A (nl) * 1990-11-05 1992-06-01 Philips Nv Kommunikatiesysteem en een centrale besturingseenheid en een kommunikatiepost in het kommunikatiesysteem.
GB9024684D0 (en) * 1990-11-13 1991-01-02 Cognito Group Ltd A method of communicating data
US5291518A (en) * 1991-09-06 1994-03-01 Metriplex, Inc. Link system for radio paging service
SE469543B (sv) * 1991-12-12 1993-07-19 Televerket Anordning foer reservvaeg vid mobilt trunkerat telekommunikationssystem
US5457808A (en) * 1992-02-04 1995-10-10 Nec Corporation Point-to-multipoint communication network capable of retransmitting a multicast signal
US5613065A (en) * 1992-02-19 1997-03-18 Fujitsu Limited Information broadcasting system having reception error minimizing facility
JPH0738612B2 (ja) * 1992-03-18 1995-04-26 日本電気株式会社 衛星通信システムにおける制御装置
JPH0738606B2 (ja) * 1992-10-30 1995-04-26 日本電気株式会社 衛星通信方式
US5499243A (en) * 1993-01-22 1996-03-12 Hall; Dennis R. Method and apparatus for coordinating transfer of information between a base station and a plurality of radios
DE4308161C2 (de) * 1993-03-16 2000-12-14 Philips Corp Intellectual Pty System zur Nachrichtenübertragung über Satelliten
JPH08251096A (ja) * 1995-03-11 1996-09-27 Nec Corp スロット割り当て方式
US5535191A (en) * 1995-06-28 1996-07-09 Seiko Communications Systems, Inc. Method and apparatus for switching between redundant hardware in a wireless data communication system
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
EP1052789A1 (de) * 1999-05-13 2000-11-15 ICO Services Ltd. Mobiles Satelliten Telefon System mit Packet Funk Dienst
US6113075A (en) * 1999-07-06 2000-09-05 Mcmichael; Thomas James Scissors type apparatus for removing floor coverings
US6553009B2 (en) * 1999-07-09 2003-04-22 Satellite-Smart Solutions Ltd. Direct satellite communication
GB2369538B (en) * 2000-11-24 2004-06-30 Ibm Recovery following process or system failure
US8068448B1 (en) * 2007-06-15 2011-11-29 Vt Idirect, Inc. Apparatus, system, and computer program for synchronizing communications
US8027285B1 (en) * 2007-06-15 2011-09-27 Vt Idirect, Inc. Method to eliminate frequency offset introduced in a network
US9680199B2 (en) * 2014-06-27 2017-06-13 Viasat, Inc. System and apparatus for driving antenna

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH541259A (it) * 1970-12-17 1973-08-31 Sits Soc It Telecom Siemens Sistema di trasmissione a divisione di tempo per comunicazione via satellite comprendente una pluralità di stazioni a terra
US4224538A (en) * 1978-09-15 1980-09-23 Firetek Corporation Series supervision/parallel actuation device
US4617674A (en) * 1983-07-14 1986-10-14 Rca Corporation Synchronizing system for spread spectrum transmissions between small earth stations by satellite via an intermediate hop to a large earth station
CA1232986A (en) * 1984-04-16 1988-02-16 Toshinori Hotta Supervising and controlling system for a communication station in a tdma communication system
JPS61120538A (ja) * 1984-11-15 1986-06-07 Nec Corp 多方向多重通信装置
CA1261080A (en) * 1985-12-30 1989-09-26 Shunichiro Tejima Satellite communications system with random multiple access and time slot reservation
JPS6387838A (ja) * 1986-09-30 1988-04-19 Nec Corp 通信ネツトワ−クにおける監視方式

Also Published As

Publication number Publication date
US4947451A (en) 1990-08-07
AU3026189A (en) 1989-08-24
DE68918727T2 (de) 1995-02-16
JPH0618337B2 (ja) 1994-03-09
EP0330178B1 (de) 1994-10-12
EP0330178A2 (de) 1989-08-30
AU610467B2 (en) 1991-05-16
CA1301379C (en) 1992-05-19
JPH01215133A (ja) 1989-08-29
EP0330178A3 (de) 1991-10-02

Similar Documents

Publication Publication Date Title
DE68918727D1 (de) Satellitennachrichtübertragungssystem mit Vielfachzugriff und Ersatzzentralstation.
DE68914287D1 (de) Kommunikationssystem.
NO891255D0 (no) Radiokommunikasjonssystem.
DE3585012D1 (de) Nachrichtensystem mit vielfachzugriff.
DE3688732D1 (de) Satellitenkommunikationssystem mit wahlfreiem vielfachzugriff und zeitschlitzreservierung.
DE68922337D1 (de) Funkruf-Kommunikationssystem.
DE3882464D1 (de) Bewegliches satellitenkommunikationssystem.
DE3586280D1 (de) Gesteuertes sternnetz.
GB8320722D0 (en) Multiple access communication system
FI863466L (fi) Kontrollstation foer fordon som kan koeras i tvao riktningar.
DE69331375D1 (de) Mobiles kommunikationssystem mit kodemultiplexvielfachzugriff
EP0210811A3 (en) Time division multiple access radio communication system
DK333389D0 (da) Kummunikationssystem med flere antenner
DE3886149D1 (de) Rundfunkkommunikationssystem mit Mehrfachzugriff im Zeitmultiplex.
FI892942L (fi) Kommunikationssystem.
DE3682401D1 (de) Lokales netzwerksystem.
DE3889502D1 (de) Funkkommunikationssystem.
DE69023379D1 (de) Radiokommunikationssystem.
DE3686963D1 (de) Funkuebertragungssystem.
DE3672823D1 (de) Kommunikationsnetz.
EP0602017A3 (en) System for internetwork communication between local area networks.
DE68921259D1 (de) Kommunikationssystem.
DE68908204D1 (de) Nachrichtenverteilungssystem.
DE69013238D1 (de) Satellitenübertragungssystem mit Vielfachzugriff für Mini-Erdstationsnetzwerke.
GB8607738D0 (en) Communication systems

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee