Delay measurement in a point to multipoint system
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United States of America Patent
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Jan 26, 2016
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app pub date -
Sep 27, 2013
filing date -
Sep 28, 2012
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Abstract
A system and method for measuring a propagation delay in a point to multipoint network. The system includes a central timing module which provides a timing signal to a plurality of line cards. Each of the line cards includes a local clock that is frequency locked to a 1588 clock and is configured to generate a return timing signal to the central timing module after a predetermined number of clock cycles. The central timing module measures the propagation delay based on the clock cycles of the local clock counted before the return signal is generated and the period of the local clock.
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