HK99997A - Satellite communications system - Google Patents

Satellite communications system

Info

Publication number
HK99997A
HK99997A HK99997A HK99997A HK99997A HK 99997 A HK99997 A HK 99997A HK 99997 A HK99997 A HK 99997A HK 99997 A HK99997 A HK 99997A HK 99997 A HK99997 A HK 99997A
Authority
HK
Hong Kong
Prior art keywords
selective call
message
call receiver
communications system
satellite communications
Prior art date
Application number
HK99997A
Other languages
English (en)
Inventor
Robert J Schwendeman
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of HK99997A publication Critical patent/HK99997A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/022—One-way selective calling networks, e.g. wide area paging
    • 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
    • H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service

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)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
HK99997A 1989-11-06 1997-06-26 Satellite communications system HK99997A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US43226989A 1989-11-06 1989-11-06
PCT/US1990/006043 WO1991007025A1 (en) 1989-11-06 1990-10-22 Satellite communications system
CA002053597A CA2053597C (en) 1989-11-06 1991-10-16 Satellite communications system

Publications (1)

Publication Number Publication Date
HK99997A true HK99997A (en) 1997-08-08

Family

ID=25674822

Family Applications (1)

Application Number Title Priority Date Filing Date
HK99997A HK99997A (en) 1989-11-06 1997-06-26 Satellite communications system

Country Status (9)

Country Link
EP (1) EP0466843B1 (xx)
AT (1) ATE123365T1 (xx)
AU (1) AU649426B2 (xx)
CA (1) CA2053597C (xx)
DE (1) DE69019825T2 (xx)
DK (1) DK0466843T3 (xx)
ES (1) ES2073040T3 (xx)
HK (1) HK99997A (xx)
WO (1) WO1991007025A1 (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681995B1 (fr) * 1991-10-01 1993-12-10 Alcatel Espace Procede de basculement du trafic dans un systeme de communications par satellites en orbite basse a destination de terminaux et systeme de communications mettant en óoeuvre un tel procede.
US5278863A (en) * 1992-04-10 1994-01-11 Cd Radio Incorporated Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites
US5592471A (en) * 1995-04-21 1997-01-07 Cd Radio Inc. Mobile radio receivers using time diversity to avoid service outages in multichannel broadcast transmission systems
US6223019B1 (en) 1996-03-14 2001-04-24 Sirius Satellite Radio Inc. Efficient high latitude service area satellite mobile broadcasting systems
US6023616A (en) * 1998-03-10 2000-02-08 Cd Radio Inc. Satellite broadcast receiver system
US6052561A (en) * 1998-02-23 2000-04-18 Rudowicz; Michael James Location method for a elective call receiver operating in a satellite communication system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349398A (en) * 1964-08-27 1967-10-24 Itt Satellite communication system
US3384891A (en) * 1965-02-11 1968-05-21 Gen Electric Method and system for long distance navigation and communication
US3497807A (en) * 1966-08-31 1970-02-24 Us Navy Multipurpose satellite system
DE3375351D1 (en) * 1983-10-21 1988-02-18 Ant Nachrichtentech Process for the transmission of information services by satellites
FR2578703B1 (fr) * 1985-03-05 1987-06-26 Europ Agence Spatiale Procede de transmission de donnees autoadaptatif et hybride, notamment pour la telecommunication spatiale

Also Published As

Publication number Publication date
ATE123365T1 (de) 1995-06-15
AU6712990A (en) 1991-05-31
DE69019825T2 (de) 1995-12-21
EP0466843A1 (en) 1992-01-22
AU649426B2 (en) 1994-05-26
WO1991007025A1 (en) 1991-05-16
EP0466843B1 (en) 1995-05-31
ES2073040T3 (es) 1995-08-01
DK0466843T3 (da) 1995-07-17
DE69019825D1 (de) 1995-07-06
CA2053597A1 (en) 1993-04-17
CA2053597C (en) 1995-08-22
EP0466843A4 (en) 1992-04-29

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20061022