Media access control and signaling protocol for low power, large-scale wireless networks
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United States of America Patent
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Issued Date -
Dec 6, 2007
app pub date -
May 31, 2007
filing date -
May 31, 2006
priority date (Note) -
Abandoned
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Abstract
An implementation of a signaling protocol for low power and large scale wireless networks provides a media access control (MAC) that produces a low rate two-way communication link between a commercial infrastructure and a very large number of small, low-cost devices known as electronic tags. The numerous tags attached to merchandise or shelves communicate with a number of access points (AP) distributed throughout a facility containing merchandise for sale or storage. A store controller maintains the pricing database for the point of sale (POS) registers of the facility. Price changes are transmitted in real time to the tag, thus updating the merchandise tags and the point of sales (POS) registers simultaneously. The tags contain a controller and a battery in which conservation of power is crucial to the life of the tags.
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