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A New Multiple Presence Servers Architecture in SIP Environment

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2013, 18(4), pp.79-85
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

Jang,Choon-Seo 1

1금오공과대학교

Accredited

ABSTRACT

In SIP(Session Initiation Protocol) environment, the presence server should process SIP SUBSCRIBE request messages including multiple presence resources addresses from users, and also precess massive notification messages from the subscribed presence resources. The load of the presence server increases as number of users increase, and it limits system extendability. Therefore a new multiple presence servers architecture has been suggested in this research. In this architecture presence servers can be added dynamically and each server's load can be controlled effectively as number of users increase. Each presence server can monitor current load status of entire presence system by using presence event notification package which newly has been suggested in this paper. When a particular presence server's load increases over predefined limit, the presence service processing is distributed by selecting a server which has the smallest load, or by generating a new server dynamically. In this system the overall load of the entire system can be controlled optimally and extendability of the system can be increased. For this purpose a new presence event notification package and presence information data format have been suggested. The performance of the proposed system has been evaluated by experiments. They shows 44.3% increase in SUBSCRIBE message processing time, and 43.1% increase in Notification message processing time.

Citation status

* References for papers published after 2022 are currently being built.