David Lai and Zhongwei Zhang
University of Southern Queensland
Toowoomba, Queensland
The key to success in Next Generation Network is service routing in which service requests may
need to be redirected as in the case of the INVITE request in Session Initiation Protocol [21].
Service Path (SPath) holds the authentication and server paths along side with service
information. As the number of hops in a redirection increases, the length of SPath increases. The
overhead for service routing protocols which uses SPath increases with the length of SPath.
Hence it is desirable to optimize SPath to ensure efficiency and scalability of protocols involving
service routing. In this paper, we propose a re-routing strategy to optimize service routing, and
demonstrate how this strategy can be implemented using SPath to enhance the efficiency and
scalability of Service Network Graph (SNG).
Keywords
Service Routing, Service Path, Service Network Graph, Optimization, Authentication Delegation
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