07418263 is referenced by 47 patents and cites 140 patents.

A satellite communications system includes a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band, and an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite frequency band, to thereby terrestrially reuse at least some of the satellite frequency band. Wireless communications with a radioterminal are handed over from the ancillary terrestrial component to the satellite if the radioterminal transmit power exceeds a threshold, and a received satellite signal quality exceeds a threshold, even though the radioterminal is able to wirelessly communicate with the ancillary terrestrial component. Downlink wireless radiation that is received at the radioterminal from a satellite may be monitored to determine potential interference created by the uplink radiation of the radioterminal due to the terrestrial reuse of at least some of the satellite frequency band.

Title
Systems and methods for handover between space based and terrestrial radioterminal communications
Application Number
11/95007
Publication Number
7418263 (B2)
Application Date
March 31, 2005
Publication Date
August 26, 2008
Inventor
Peter D Karabinis
Cary
NC, US
Santanu Dutta
Cary
NC, US
Agent
Myers Bigel Sibley & Sajovec P A
Assignee
ATC Technologies
VA, US
IPC
H04Q 7/20
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