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Abstract

Alexander Knauf, Gabriel Hege, Thomas C. Schmidt, Matthias Wählisch,
A Virtual and Distributed Control Layer with Proximity Awareness for Group Conferencing in P2PSIP,
In: Proc. of IPTComm 2010, ser. Digital Library, p. 122–133, ACM : New York, August 2010.
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Abstract: There is an increasing demand to access voice or video group conferences without the burden of a dedicated infrastructure, but at any place and in an ad hoc fashion. Corresponding solutions require a lightweight, fully distributed cooperation among parties that share and manage the conference in an efficient, self-adaptive way. The technology framework of P2PSIP can be seen as a promising starting point to meet these objectives. In this paper, we make several contributions towards such a distributed, virtualized control layer based on P2PSIP that seamlessly scales and adapts to the user needs. We propose a P2P-signaling protocol scheme for a distributed conference control with SIP, that splits the semantic of Identifier and Locator of a SIP conference URI in a standard-compliant manner. This protocol scheme serves as further basis for a virtualization in RELOAD. We further design and evaluate a self-organizing communication layer that provides load sharing and churn resilience with proximity-awareness. Finally, we address key aspects of security and trust, as well as compatibility for conference unaware clients.

Themes: Video Conferencing over IP, Peer-to-Peer Networking

 


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