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Method and system for time synchronization

  • US 20030123491A1
  • Filed: 12/13/2000
  • Published: 07/03/2003
  • Est. Priority Date: 12/13/2000
  • Status: Active Grant
First Claim
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1. A method of synchronizing a timing device of a client station comprising the steps of:

  • a) sending a plurality of packets, each packet being sent at a predetermined time having a predetermined temporal spacing from other packets, from a time server to the client station via a communications network;

    b) receiving the plurality of packets at the client station;

    c) determining a time indicative of a local time of receipt of the plurality of packets at the client station and storing time data in dependence thereon;

    d) returning the plurality of packets to the time server via the communications network;

    e) determining a time indicative of a local time of receipt of the plurality of packets at the time server; and

    , f) determining synchronisation data in dependence upon round trip delay of the packets and variance in temporal spacing of received packets.

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