Digital Library of the European Council for Modelling and Simulation

Title:	Simulation Of Overload Control In SIP Server Networks
Authors:	Pavel O. Abaev, Yuliya V. Gaidamaka, Alexander V. Pechinkin, Rostislav V. Razumchik, Sergey Ya. Shorgin
Published in:	(2012).ECMS 2012 Proceedings edited by: K. G. Troitzsch, M. Moehring, U. Lotzmann. European Council for Modeling and Simulation. doi:10.7148/2012 ISBN: 978-0-9564944-4-3 26^th European Conference on Modelling and Simulation, Shaping reality through simulation Koblenz, Germany, May 29 – June 1 2012
Citation format:	Abaev, P. O., Gaidamaka, Y. V., Pechinkin, A. V., Razumchik, R. V., & Shorgin, S. Y. (2012). Simulation Of Overload Control In SIP Server Networks. ECMS 2012 Proceedings edited by: K. G. Troitzsch, M. Moehring, U. Lotzmann (pp. 533-539). European Council for Modeling and Simulation. doi:10.7148/2012-0533-0539
DOI:	http://dx.doi.org/10.7148/2012-0533-0539
Abstract:	In this study, we investigated a signalling load control mechanism for SIP server networks and developed a cor- responding queuing model. The so-called hop-by-hop overload control, known from recent IETF drafts and RFCs, was considered and a similar buffer overload con- trol scheme which was developed for the SS7 signalling link in ITU-T Recommendation Q.704, was proposed. The mechanism is based on hysteretic load control with thresholds for reducing potential oscillations between the control-on and control-off states under certain loading conditions. Adjustment of three types of thresholds – the overload onset threshold, the overload abatement thresh- old, and the overload discard threshold – makes possi- ble the regulation of signalling traffic to meet blocking requirements. In this study, we built and analyzed the M |M |1 queue with bi-level hysteretic input load control. A numerical example illustrating the control mechanism that minimizes the return time from overloading states satisfying the throttling and mean control cycle time con- straints is also presented.
Full text: