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Tracker in P2P systems with DVD functionalities

  • US 8,868,682 B2
  • Filed: 07/23/2009
  • Issued: 10/21/2014
  • Est. Priority Date: 07/23/2009
  • Status: Expired due to Fees
First Claim
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1. A method of grouping peers in a P2P system where DVD jump operations can be performed, the method comprising the steps of:

  • a. determining, by a computing device, for each peer and video operation a time T and a jump point Pj b. generating a hash key HKj for each peer, the hash key having a value HKj=(Pj

    T)/C, where C>

    =1 is a granularity of the systemc. grouping peers with the same hash-keyd. selecting a neighborhood of a requesting peer from a group of peers with the same hash key as the requesting peer, wherein if the number of peers in the neighborhood of the requesting peer is less than n, where n is a design parameter, the remaining peers of the neighborhood of the requesting peer are selected;

    from a list of peers with a hash key greater than and close to the hash key of the requesting peer orfrom a list of peers that have already played a playback segment j of the requesting peer.

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