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PATH CONTROL DEVICE, PATH CONTROL METHOD, AND PATH CONTROL PROGRAM

  • US 20110032818A1
  • Filed: 11/24/2009
  • Published: 02/10/2011
  • Est. Priority Date: 11/28/2008
  • Status: Active Grant
First Claim
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1. A path control device which controls a path for transmitting data from a transmission terminal to a reception terminal through relays, said path control device comprising:

  • a path information generating unit configured to generate path information indicating paths for transmitting the data from the transmission terminal to the reception terminal;

    a path malfunction predicting unit configured to predict a malfunction on each of the relays, using the number of flows as a malfunction occurrence likelihood value which represents likelihood of a malfunction on the relay, including a degradation in transmission quality and increased load, each of the flows being a sequence of one or more packets to be relayed from one transmission source to one destination by the relay which is a candidate for monitoring, at least one of that is determined for each path indicated by the path information; and

    a bypass path selecting unit configured to select, based on the malfunction occurrence likelihood value, a path that should be used for transmitting the data from the transmission terminal to the reception terminal.

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