Signalling channel and radio system for power saving in wireless devices
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United States of America Patent
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Sep 11, 2012
Grant Date -
May 6, 2010
app pub date -
Jan 8, 2010
filing date -
Sep 24, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Wireless devices, transmitters, systems and methods are provided that have a narrow band signalling channel and a wide band channel, for example an OFDM channel. In order to save power, the wireless device is nominally powered down with the exception of a receiver specific to the narrow band signalling channel. Once instructed to do so over the narrow band signalling channel, the wireless device wakes up the rest of its wide band receive circuitry.
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