Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Patent
1997-08-11
1999-11-23
Chin, Wellington
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
455 132, 455429, 455430, 370324, H04B 7185
Patent
active
059915986
ABSTRACT:
Radiated from each orbiting satellite of a satellite communication network to M cells (M representing an integer, such as thirty-seven) covered with a predetermined solid angle on the earth, M spot beams are identified by M identification codes. In an earth station which may be a portable unit, a burst signal transmitter device (31) comprises a receiver part (35) receiving one of the spot beams as a received beam at a reception time, to recognize as a recognized code one of the identification codes that identifies the received beam, and a transmitter part (45) for transmitting burst signals at a transmission time delayed from the reception time by an offset amount selected by the recognized code from M offset amounts predetermined for the identification codes. Preferably, the M offset amounts are stored in a memory (43).
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Chin Wellington
NEC Corporation
Sobutka Philip J.
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