Methods and apparatus for synchronizing devices in a wireless data communication system
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United States of America Patent
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Aug 15, 2017
Grant Date -
N/A
app pub date -
May 19, 2014
filing date -
May 20, 2013
priority date (Note) -
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Abstract
The present disclosure describes methods and apparatus for synchronizing devices in a wireless data communication system. A wireless transceiver device of the wireless data communication system transmits a beacon at various intervals that includes both a timestamp indicating a current time and date of the transmitting wireless transceiver device, and a time quality indication indicating a quality of the time source of the transmitting wireless transceiver device. A wireless transceiver device receiving the beacon evaluates the time quality indication included in the beacon. If the time quality indication included in the beacon indicates the transmitting wireless transceiver device has a higher quality time source than the receiving wireless transceiver device, then the receiving wireless transceiver device adjusts its clock based on the timestamp in the beacon, otherwise the receiving wireless transceiver device need not adjust its clock based on the timestamp in the beacon.
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