CA2238646A1 - Improved satellite trunked radio service system - Google Patents

Improved satellite trunked radio service system

Info

Publication number
CA2238646A1
CA2238646A1 CA002238646A CA2238646A CA2238646A1 CA 2238646 A1 CA2238646 A1 CA 2238646A1 CA 002238646 A CA002238646 A CA 002238646A CA 2238646 A CA2238646 A CA 2238646A CA 2238646 A1 CA2238646 A1 CA 2238646A1
Authority
CA
Canada
Prior art keywords
net
group
central controller
closed user
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.)
Granted
Application number
CA002238646A
Other languages
French (fr)
Other versions
CA2238646C (en
Inventor
C. Edward Sigler
Richard S. Sweet
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.)
ATC Technologies LLC
Original Assignee
Individual
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
Priority claimed from US08/657,479 external-priority patent/US5717830A/en
Application filed by Individual filed Critical Individual
Publication of CA2238646A1 publication Critical patent/CA2238646A1/en
Application granted granted Critical
Publication of CA2238646C publication Critical patent/CA2238646C/en
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
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18567—Arrangements for providing additional services to the basic mobile satellite telephony service
    • 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
    • H04B7/18578—Satellite systems for providing broadband data service to individual earth stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

A mobile communication system for providing communication between multiple users (10) in a closed user group arrangement includes a plurality of mobile earth terminals METs (10) registering with a mobile communication system (12).
The first mobile earth terminal (10) selects a closed user group network identifier (NET ID) representing a NET group to establish voice communication therewith and transmits the NET ID to a central controller (14). The central controller (14) receives the NET ID from the first MET (10), validates the NET
ID, allocates a frequency for the NET group, and broadcasts the message to the NET group informing the NET group of the allocated frequency. The second MET
(10) tunes to the frequency in response to the message broadcast by the central controller (14). The closed user group arrangement provides security measures to ensure only authorized METs to gain access to the NET group, dual standby mode of operation, and priority default operation.
CA002238646A 1995-11-30 1996-11-27 Improved satellite trunked radio service system Expired - Fee Related CA2238646C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US774295P 1995-11-30 1995-11-30
US60/007,742 1995-11-30
US1420596P 1996-03-27 1996-03-27
US60/014,205 1996-03-27
US08/657,479 US5717830A (en) 1995-09-19 1996-05-29 Satellite trunked radio service system
US08/657,479 1996-05-29
PCT/US1996/019165 WO1997020401A1 (en) 1995-11-30 1996-11-27 Improved satellite trunked radio service system

Publications (2)

Publication Number Publication Date
CA2238646A1 true CA2238646A1 (en) 1997-06-05
CA2238646C CA2238646C (en) 2001-03-20

Family

ID=27358434

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002238646A Expired - Fee Related CA2238646C (en) 1995-11-30 1996-11-27 Improved satellite trunked radio service system

Country Status (3)

Country Link
AU (1) AU1276397A (en)
CA (1) CA2238646C (en)
WO (1) WO1997020401A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6058307A (en) 1995-11-30 2000-05-02 Amsc Subsidiary Corporation Priority and preemption service system for satellite related communication using central controller
DE19912547A1 (en) 1999-03-19 2000-09-28 Bosch Gmbh Robert Method, center and terminal for the transmission of messages to terminals in a telecommunications system
EP1056223A1 (en) * 1999-05-25 2000-11-29 ICO Services Ltd. Satellite communications system with mutually exclusive groups of users
US6915136B2 (en) * 2000-11-10 2005-07-05 Ntt Docomo, Inc. Mobile communication method and mobile communication system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303286A (en) * 1991-03-29 1994-04-12 Space Systems/Loral, Inc. Wireless telephone/satellite roaming system
US5394560A (en) * 1992-09-30 1995-02-28 Motorola, Inc. Nationwide satellite message delivery system

Also Published As

Publication number Publication date
CA2238646C (en) 2001-03-20
AU1276397A (en) 1997-06-19
WO1997020401A1 (en) 1997-06-05

Similar Documents

Publication Publication Date Title
AU686219B2 (en) Method for controlling subscriber-stations in a radiotelecommunications system
US6161016A (en) Broadcast channel seizure with allocated single traffic channel per occupied cell in a cellular system
EP0212761A2 (en) Communications system
US5564072A (en) Fixed cellular communications system
CN101438605B (en) Method and system for establishing a direct radio communication between two or more user devices in a cellular mobile communication system
US5812950A (en) Cellular telephone system having prioritized greetings for predefined services to a subscriber
AU727143B2 (en) Dual band transceiver
AU678247B2 (en) Group call in a cellular radio system
EP0505106A2 (en) Split service in cellular telecommunications networks and methods therefore
WO1998027778A2 (en) Method and system for displaying greetings in a mobile radio communications system
BR9506893A (en) Multi-mode personal wireless communication system
EP0804006A3 (en) Medium access control scheme for a wireless access to an ATM network
CA2124556A1 (en) Communication channel selection in cellular radio communication systems
GB2234649A (en) Personal communications systems
GB2308042B (en) Radio communication system
CA2217038A1 (en) Virtual network configuration and management system for satellite communications system
CA2238646A1 (en) Improved satellite trunked radio service system
JPH0847032A (en) Method and system for supplying subscriber's circuit of radio system
EP0467600B1 (en) Radio link architecture for wireless communication systems
CA2221373A1 (en) Full service dispatcher for satellite trunked radio service system
JP2626599B2 (en) Mobile station paging method in cellular mobile communication system
Failli A second generation public mobile radio system
Tafazolli et al. Mobile/personal communication systems in Europe
Failli Status of the public mobile radio services
JP2000350253A (en) Method and system for radio communication and constituting device for same

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed