Chord: a scalable peer-to-peer lookup protocol for internet applications
IEEE/ACM Transactions on Networking (TON)
SOSIMPLE: A Serverless, Standards-based, P2P SIP Communication System
AAA-IDEA '05 Proceedings of the First International Workshop on Advanced Architectures and Algorithms for Internet Delivery and Applications
Prototyping a P2P SIP User Agent with Support for Multiple Overlays
PERCOM '08 Proceedings of the 2008 Sixth Annual IEEE International Conference on Pervasive Computing and Communications
Building low-diameter peer-to-peer networks
IEEE Journal on Selected Areas in Communications
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The Session Initiation Protocol (SIP) has been widely regarded as one of the most popular protocols for providing real-time multimedia services. However, in wireless ad hoc networks where no infrastructure is present but communication is required, such as in many extreme emergency scenarios, the SIP central server model becomes a central point of failure. The nature of mobile ad hoc networks makes them suitable to be utilized in the context of an emergency for various rescue teams. This requires the design of an overlay architecture such as Peer to Peer SIP, above the transport layer of the networks, to provide services for delay sensitive applications such as VoIP and Video. In this paper we propose a framework for handling the P2PSIP overlay. A hybrid structured and unstructured P2PSIP overlay is defined using the literature popular DHT-Based CHORD and the Low diameter algorithms. Additionally, a novel cross-layer design is proposed to provide failover mechanisms that can address the key research challenges surrounding availability and reliability within mobile ad hoc networks for supporting emergency services in extreme catastrophic events.