Satellite cellular telephone and data communication system at an inclined orbit
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United States of America Patent
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Jun 24, 1997
Grant Date -
N/A
app pub date -
Dec 27, 1994
filing date -
Dec 27, 1994
priority date (Note) -
In Force
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Abstract
An improved satellite cellular telephone and data communication system facilitates dual satellite coverage over at least eighty-five percent of the earth. This improved system permits communication with hand held and mobile mounted cellular telephones (120). The system permits two-way communications anywhere on or above the earth up to a particular height above the earth of several hundred nautical miles. The system employs a number of low-earth orbiting satellites (12) moving about the earth in orbit. The satellites (12) are inclined at an angle between 30 and 90 degrees. Links (102) are provided from the satellites directly to the users (120) and via the public switched telephone network (20) to other users. The satellites (12) are interconnected via links in a ring structure surrounding the earth. Switching is performed by each of the satellites (12).
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