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Load Balancing Scheme in Heterogeneous Multiple AS Environment based on IMS Network
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 Title & Authors
Load Balancing Scheme in Heterogeneous Multiple AS Environment based on IMS Network
Yoo, Yung-Jun; Cho, Yoon-Sang; Song, Min-Do; Kim, Moo-Hyun;
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In this paper we propose a load balancing scheme for heterogeneous multiple AS's (Application Server) in IMS (IP Multimedia Subsystem) based network. In IMS network, to perform load balancing among multiple ASs with different registration pattern, different weight value should be set for each AS. In previous systems, there exists an inconvenience that the weight value should be set manually by the operator after monitoring the result. In this paper we propose a method to calculate optimal weight in automatic manner and to perform load balancing simultaneously. We also propose a simplified algorithm to reduce calculation in specific situation and present a way to apply our proposed scheme in adaptive manner according to the situation. Through simulation result, we verify that our proposing scheme outperforms previous schemes in load balancing and adjusts well to the change of the system in automatic manner with fast convergence.
Load Balancding;IMS;Application Server;Service Trigger;S-CSCF;
 Cited by
3GPP TS 23.002. Network architecture; release 7. September 2007

3GPP TS 23.218. IP Multimedia (IM) session handling; IM call model;Stage 2; release 7. June 2007

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