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CORRELATIVE ANTICIPATORY DELTACASTING

  • US 20100177642A1
  • Filed: 01/13/2010
  • Published: 07/15/2010
  • Est. Priority Date: 01/13/2009
  • Status: Active Grant
First Claim
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1. A method for multicasting over a communications system having a communications path between a server side of the communications system and a plurality of clients, the communications path comprising a shared forward link over which bandwidth resources are shared during a multicast communication, the method comprising:

  • intercepting a data block at the server side of the communications system, the data block comprising a header portion and a content portion and being communicated over the communications path;

    generating a fingerprint using byte-level information comprised by the content portion of the data block;

    using the fingerprint to make a matching determination, the matching determination indicating whether the data block matches a logged data block having previously been communicated to at least one of the plurality of clients of the communications system;

    determining whether a trigger event has occurred according to the matching determination; and

    when the trigger event has occurred according to the matching determination, multicasting the data block from the server side of the communications system over the communications path.

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