Wakeup and interrogation of meter-reading devices using licensed narrowband and unlicensed wideband radio communication
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United States of America Patent
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Jun 19, 2012
Grant Date -
Aug 19, 2010
app pub date -
Feb 13, 2009
filing date -
Feb 13, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A meter data collection system in which a licensed narrowband frequency channel is used to wake up carrier-sensed, battery-powered meter reading devices (MRDs) is disclosed herein. In the meter data collection system disclosed herein, an unlicensed wideband channel is used to transmit data replies from the MRDs to a mobile data collection device. In another embodiment disclosed herein, a meshed network of MRDs communicating on the unlicensed channel is combined with a roaming interrogator that uses the licensed channel to send commands or to perform on-demand reads.
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