APPARATUS AND METHOD USING HISTOGRAM-BASED TECHNIQUES FOR AVOIDING OVERPOLLING
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United States of America Patent
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N/A
Issued Date -
Apr 21, 2011
app pub date -
Oct 20, 2010
filing date -
Oct 21, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A device including an RF transceiver coupled to receive signals from an antenna; and a micro-controller coupled to the RF transceiver periodically scanning for a wakeup signal and measuring a signal strength is provided. The micro-controller may use the signal strength to update a count value in a bin of a histogram. The micro-controller may also decrement histogram values periodically, and direct the RF transceiver to respond to the wakeup signal if the count value in the histogram is lower than a threshold value. Further according to some embodiments disclosed herein a system for avoiding over polling in wireless communications may include a tag and a reader. The reader may transmit a wakeup signal periodically and the tag may operate as the device disclosed above. Also, a method for using a device and a system as above is provided.
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