Method of optimizing the transmission of idle beacon messages and a communications system using the method

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United States of America Patent

PATENT NO 5241691
SERIAL NO

07661034

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A time division communications system for radio communication between primary stations and a plurality of secondary stations, having a normal idle beacon message transmitted by the primary station when it has an otherwise idle period. To reduce interference with stations in adjacent areas, and power consumption, during long idle periods the primary station ascertains whether secondary stations which are in range are experiencing sufficiently low interference that the primary station can switch to a low duty cycle link mode. In the low duty cycle mode paging messages are transmitted as required, and low duty link reassurance messages are transmitted at relatively long intervals. If either the primary or secondary stations detect sufficient increase in interference, the system reverts to the normal idle state.

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Patent Owner(s)

  • U.S. PHILIPS CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Owen, Frank C G Petts Wood, GB2 5 339

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