MINIMIZING SYMMETRICAL LATENCY IMPACT BY JITTER BUFFER FOR TDM CES
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United States of America Patent
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Issued Date -
Jun 18, 2015
app pub date -
Dec 18, 2013
filing date -
Dec 18, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and system are provided for allowing time-alignment of teleprotection measurements of power signals. Teleprotection observations are communicated between teleprotection ends through a packet switched network. At each end of a teleprotection segment, a teleprotection device communicates with the network through a router providing CES and located at the edge of the network. Playout of the jitter buffers of the CES routers is initiated only if the PDV is acceptable such that confidence that the packets from each CES router to the associated teleprotection device are synchronized. The fill level of the jitter buffer is determined a number of times, and then the average of the determined fill levels is compared with an expected fill level. If the difference between the average of the determined fill levels and the expected fill level exceeds a threshold, then the TDM CES is restarted. This is repeated until the difference is acceptable, indicating that playout of each jitter buffer is initiated at the same time.
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