Multiplex communications – Communication over free space – Repeater
Reexamination Certificate
2005-02-15
2005-02-15
Yao, Kwang Bin (Department: 2667)
Multiplex communications
Communication over free space
Repeater
Reexamination Certificate
active
06856606
ABSTRACT:
A communication system is provided that allows the use of low-cost, low-power remote terminal units that communicate substantially asynchronously and independently to a base station. To minimize cost and complexity, the remote terminal units are configured similarly, including the use of substantially identical transmission schemes, such as a common Direct Sequence Spread Spectrum (DSSS) code. To minimize collisions among transmissions, the communication system is designed to use a high-gain antenna with a limited field of view, to limit the number of cotemporaneous, or overlapping transmissions that are received at the base station. To cover a wide area, the limited field of view is swept across the area of coverage. To overcome potential losses caused by collisions, the remote terminal units are configured to repeat transmissions; to minimize repeated collisions, the repeat interval and/or duration is randomized.
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Fleeter Richard D.
Hanson John E.
McDermott Scott A.
Zenick, Jr. Raymond G.
AeroAstro, Inc.
McDermott, Esq. Robert M.
Yao Kwang Bin
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