METHOD AND APPARATUS FOR MEASURING DIRECTIONALLY DIFFERENTIATED (ONE-WAY) NETWORK LATENCY
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United States of America Patent
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Issued Date -
Nov 18, 2010
app pub date -
May 14, 2009
filing date -
May 14, 2009
priority date (Note) -
Abandoned
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Abstract
Determining directionally differentiated latency in a network by use of master and slave test instruments to record latency measurements in their native time bases, and retrieving test instrument latency frame transmit/receive timestamps from the master and slave and converting them to the time base of one of the master or slave by use of the offset calculation, utilizing 3 bounce timestamp exchange, providing one-way latency measurement with resolution of less than 100 μs, using internal clocks in the test instruments, without requirement of expensive external time base technology.
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