WO1998029967A3 - Communication system with direct link to satellite - Google Patents

Communication system with direct link to satellite Download PDF

Info

Publication number
WO1998029967A3
WO1998029967A3 PCT/US1997/024169 US9724169W WO9829967A3 WO 1998029967 A3 WO1998029967 A3 WO 1998029967A3 US 9724169 W US9724169 W US 9724169W WO 9829967 A3 WO9829967 A3 WO 9829967A3
Authority
WO
WIPO (PCT)
Prior art keywords
satellite
communication system
phone
satellite phone
satellites
Prior art date
Application number
PCT/US1997/024169
Other languages
French (fr)
Other versions
WO1998029967A2 (en
Inventor
James F Bradley
Paul W Cooper
Original Assignee
At & T 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 At & T Corp filed Critical At & T Corp
Publication of WO1998029967A2 publication Critical patent/WO1998029967A2/en
Publication of WO1998029967A3 publication Critical patent/WO1998029967A3/en

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
    • H04B7/18569—Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance
    • H04B7/18571—Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance for satellites; for fixed or mobile stations

Abstract

A communication system includes satellites and satellite phones communicating through the satellites directly. The satellite phone forms a highly directed beam toward a satellite of the communications system and adaptively maintains a beam to track the satellite as the satellite phone and/or the satellite moves relative to each other. The satellite phone contains sensors which provide steering information for directing the satellite phone's antenna beam. The communication system links a satellite phone with either another satellite phone and/or a ground based communication system connected to conventional telephone stations. The satellite phone also includes a database that contains the positional information of all potential communication satellites. The communication system coordinates satellite phone beams with a satellite network to facilitate high quality handoffs. Satellite phones can access several satellite networks based upon stored parameters or actively downloaded satellite information.
PCT/US1997/024169 1996-12-30 1997-12-23 Communication system with direct link to satellite WO1998029967A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/774,457 US5995041A (en) 1996-12-30 1996-12-30 Communication system with direct link to satellite
US08/774,457 1996-12-30

Publications (2)

Publication Number Publication Date
WO1998029967A2 WO1998029967A2 (en) 1998-07-09
WO1998029967A3 true WO1998029967A3 (en) 1998-09-11

Family

ID=25101296

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/024169 WO1998029967A2 (en) 1996-12-30 1997-12-23 Communication system with direct link to satellite

Country Status (2)

Country Link
US (1) US5995041A (en)
WO (1) WO1998029967A2 (en)

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US8524146B2 (en) 2009-08-07 2013-09-03 Paul V. Cooper Rotary degassers and components therefor
US8444911B2 (en) 2009-08-07 2013-05-21 Paul V. Cooper Shaft and post tensioning device
US8535603B2 (en) 2009-08-07 2013-09-17 Paul V. Cooper Rotary degasser and rotor therefor
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IL238612A (en) 2015-05-04 2016-05-31 Berejik Zacharia System and method for mobile communication through geostationary satellites
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
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EP0748063A2 (en) * 1995-06-06 1996-12-11 Globalstar L.P. Low earth orbit communication satellite gateway-to-gateway relay system

Also Published As

Publication number Publication date
US5995041A (en) 1999-11-30
WO1998029967A2 (en) 1998-07-09

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