A UDP-Based state-sharing mechanism of SIP transaction stateful proxy

Authors:
Luo Shi-zhang;Liao Jian-xin;Zhu Xiao-min
Affiliations:
State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing;State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing;State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing
Venue:
WASA'06 Proceedings of the First international conference on Wireless Algorithms, Systems, and Applications
Year:
2006

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Abstract

Current IMS (IP multimedia subsystem) fault-tolerant systems only implemented state-sharing mechanism of SIP call stateful proxy. This paper proposes and implements a UDP-based state-sharing mechanism of SIP transaction stateful proxy. Based on heavy stress testing, experimental reliability figure is shown. By mathematical analysis and derivation, we proved the proposed relationship equation of Tout and reliability R. Experiments showed that the results of the theoretical analysis can reflect the real performance of the system, and that the theoretical and practical Toutbreakpoint value is consistent.