Timestamp adjustment in multi-point control protocol (MPCP) messages for ethernet passive optical network (PON) protocol over coaxial network
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United States of America Patent
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Dec 8, 2015
Grant Date -
Apr 16, 2015
app pub date -
Oct 10, 2013
filing date -
Oct 10, 2013
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Abstract
A method performed by a FCU comprising receiving a MPCP request message from a CNU via an electrical network, wherein the MPCP request message comprises a first timestamp, adjusting the first timestamp in the MPCP request message by an electrical network delay, and forwarding the MPCP request message with the adjusted timestamp to an OLT via an optical network. Also disclosed is a method performed by an OLT comprising receiving a MPCP message from a CNU via a FCU and an optical network, obtaining an arrival time of the MPCP message, adjusting a timestamp in the MPCP message by subtracting an electrical network delay from the timestamp, and computing a RTT delay based on the timestamp and the arrival time.
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