Coordinating power distribution line communications
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United States of America Patent
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Apr 8, 2014
Grant Date -
Jun 27, 2013
app pub date -
Dec 22, 2011
filing date -
Dec 22, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Aspects of the present disclosure are also directed towards a method that includes maintaining a transmission period which has a start time and an end time synchronized to metrological time. Further, this method, in response to the start time, begins transmission of a frame, which includes a plurality of symbols. This transmission occurs over power distribution lines that carry power using alternating current (AC). This method also includes synchronizing a transmission time for each symbol of the plurality of symbols according to a time-based parameter of the AC. In response to reaching an end of the frame, a synchronization symbol period is determined for a synchronization symbol, as a function of the transmission times, for the plurality of symbols and time from the end of the frame to the end time. The synchronization symbol is then transmitted on the power distribution lines.
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