Overload Control in a SIP Signaling Network

Authors: Masataka Ohta

Abstract:

The Internet telephony employs a new type of Internet communication on which a mutual communication is realized by establishing sessions. Session Initiation Protocol (SIP) is used to establish sessions between end-users. For unreliable transmission (UDP), SIP message should be retransmitted when it is lost. The retransmissions increase a load of the SIP signaling network, and sometimes lead to performance degradation when a network is overloaded. The paper proposes an overload control for a SIP signaling network to protect from a performance degradation. Introducing two thresholds in a queue of a SIP proxy server, the SIP proxy server detects a congestion. Once congestion is detected, a SIP signaling network restricts to make new calls. The proposed overload control is evaluated using the network simulator (ns-2). With simulation results, the paper shows the proposed overload control works well.

Keywords: SIP signalling congestion overload control retransmission throughput simulation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1074712

References:

[1] H. Schulzrinne and J. Rosenberg: "The Session Initiation Protocol: Internet-Centric Signaling", IEEE Communication Magazine, vol.38, 10, pp-134-141, Oct.(2000)
[2] J.Rosenberg, et.el.: "SIP: Session Initiation Protocol", RFC3261, http://www.ietf.org/rfc/rfc3261.txt, June(2002)
[3] M.Ohta: "Simulation study of SIP Signaling in an Overload Condition", 3rd Int-l Conf. on communications, Internet, and Information Technology, pp.321-326, Nov.(2004)
[4] M. Govind, S. Sundaragopalan, Binu K S, and Subir Saha: "Retransmission in SIP over UDP - Traffic Engineering Issues", Proc. of International Conference on Communication and Broadband Networking, Bangalore, May(2003)
[5] J.H.James, B. Chen and L. Garrison: "Implementing VoIP: A Voice Transmission Performance Progress Report", IEEE Communication Magazine, vol.42, 6, pp.36-41, June(2004)
[6] Y. Xu, M. Westhead and F. Baker: "An Investigation of Multilevel Service Provision for Voice over IP Under Catastrophic Congestion", IEEE Communication Magazine, vol.42, 6, pp.94-100, June(2004)
[7] G. Camarillo, R. Kantola and H. Schulzrinne: "Evaluation of Transport Protocols for the Session Initiation Protocol", IEEE Network, Vol.17, 5,pp.40-46, Sep.(2003)
[8] T.Eyers and H. Schulzrinne: "Predicting Internet Telephony Call Setup Delay" Proc. 1st IP-Telephony Wksp.,Jan.(2000)
[9] M. Cortes, J. R. Ensor and J. O. Esteban:"On SIP Performance", Bell Labs Tech. J, 9, pp.155-172(2004)
[10] R.P.Ejzak, C.K.Florkey and R.W.Hemmeter: "Network Overload and Congestion: A Cpmparison of ISUP and SIP" Bell Labs Technical Journal, 9, pp.173-182(2004)
[11] VINT Project: "Network simulator ns-2", http://www.isi.edu/nsnam/ns/