Independent satellite-based communications systems sharing commo

Details Independent satellite-based communications systems sharing commo Independent satellite-based communications systems sharing commo

1995-07-31

1999-04-13

Le, Thanh Cong

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

455428, 455430, 455 63, H04B 7185

Patent

active

058945903

ABSTRACT:
Multiple, different, independent constellations (10, 20) of satellites (2, 21-23) share a portion of a common frequency spectrum such as a single carrier frequency. The satellites' antennas (11) may be either multi-beam or omni-directional, while those of earth stations (13, 14) are directional. When interference occurs between communications of a satellite (31) of a first constellation (10) and a satellite (41) of a second constellation (20), any of several interference-mitigation options may be employed, such as the first satellite (31) handing off communications to a second satellite (32) of the same constellation (10), or temporarily suspending communications. The remedial action may occur in response to either predicted or detected interference.

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Knudsen et al. "Sharing between main beam downlink LEO and uplink GSO Satellites in the 1-3 GHz allocations" Report of IWP 815 to the JIWP, Jan. 28, 1991.

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