A Comparative Study of SIP Overload Control Algorithms

TL;DR

This paper systematically compares various SIP overload control algorithms, highlighting their effectiveness and limitations, to improve scalability and prevent network failures in carrier-grade SIP networks.

Contribution

It provides a comprehensive review and assessment of state-of-the-art SIP overload control algorithms, identifying research gaps and future directions.

Findings

Current SIP overload control mechanisms are often ineffective under large-scale overloads.

Different algorithms vary significantly in their ability to manage overload conditions.

The study highlights the need for more scalable and adaptive SIP overload control solutions.

Abstract

Recent collapses of SIP servers in the carrier networks indicates two potential problems of SIP: (1) the current SIP design does not easily scale up to large network sizes, and (2) the built-in SIP overload control mechanism cannot handle overload conditions effectively. In order to help carriers prevent widespread SIP network failure effectively, this chapter presents a systematic investigation of current state-of-the-art overload control algorithms. To achieve this goal, this chapter first reviews two basic mechanisms of SIP, and summarizes numerous experiment results reported in the literatures which demonstrate the impact of overload on SIP networks. After surveying the approaches for modeling the dynamic behaviour of SIP networks experiencing overload, the chapter presents a comparison and assessment of different types of SIP overload control solutions. Finally it outlines some research opportunities for managing SIP overload control.