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LOAD BALANCE SERVER AND METHOD FOR BALANCING LOAD OF PRESENCE INFORMATION

  • US 20090010163A1
  • Filed: 06/19/2008
  • Published: 01/08/2009
  • Est. Priority Date: 07/03/2007
  • Status: Active Grant
First Claim
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1. A load balance server for communicating with first communication apparatus, second communication apparatus and a plurality of presence servers,the first communication apparatus sends a public message to register presence information,the second communication apparatus sends a subscription message subscribing presence information,the presence server registers presence information included in the received public message, and sends a report message including the presence information to the source apparatus of the received subscription message, wherein said load balance server comprising:

  • a first database for recording a list of identifiers of the presence servers that register the presence information with an entry,a second database for recording a subscription message receiving rate for each presence server,an entry retrieval means for selecting a presence server that the subscription message receiving rate is lowest, in presence servers included in the list of the entry based on the presence information, when the subscription message or the public message is received,a presence server selecting means for selecting an additional presence server whichever subscription message receiving rate is lower than predetermined threshold Ts, when the subscription message receiving rate in the selected presence server is higher than predetermined threshold Ts, anda message sending/receiving control means for sending the public message to the selected presence server.

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