White Papers

Towards Stateless Core: Improving SIP Proxy Scalability

Overview The Third Generation Partnership Project (3GPP) specified the IP Multimedia Subsystem (IMS) standard. This standard uses the Session Initiation Protocol (SIP) to setup and teardown multimedia sessions through a potentially large chain of proxies. The IMS standard allows some core elements to be deployed as transaction stateful or stateless proxies. Moreover, SIP standard allows proxies decide when to store transaction information on a per request basis. This paper examines the implementation of these core IMS proxies. It proposes an algorithm that determines for each incoming request when to store transaction information. The goal of this algorithm is to increase throughput by reducing the number of transactions without compromising call setup times.

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Publisher
Georgia Institute of Technology
File Format
PDF
Date Published
Jul 11, 2008
Format
White Papers
Topics
Multimedia, Industry Standard Protocols, Scalability

Georgia Institute of Technology White Papers

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