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Method and system for determining one-way packet travel time using RTCP

  • US 20080049635A1
  • Filed: 08/25/2006
  • Published: 02/28/2008
  • Est. Priority Date: 08/25/2006
  • Status: Abandoned Application
First Claim
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1. A method of measuring a one-way packet travel time from a first communication system to a second communication system, the method comprising:

  • receiving a Real-time Transport Control Protocol (RTCP) packet outputted by the second communication system;

    extracting a Network Time Protocol (NTP) timestamp value from the RTCP packet;

    determining a time value, T, based on the NTP timestamp value;

    extracting a Last Sender Report (LSR) value from the RTCP packet;

    extracting a Delay since LSR (DLSR) value from the RTCP packet; and

    determining a value L=T−

    LSR−

    DLSR to measure the one-way packet travel time from the first communication system to the second communication system.

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