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Signaling for Multimedia Conferencing in Stand-Alone Mobile Ad Hoc Networks

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3 Author(s)
Chunyan Fu ; Ericsson Canada, Town of Mount-Royal, QC ; Glitho, R.H. ; Khendek, F.

Mobile ad hoc networks (MANETs) are infrastructure-less and can be set up anywhere, anytime. They can host a wide range of applications in rescue operations, military, private, and commercial settings. Multimedia conferencing is the basis of a wealth of "killerrdquo applications that can be deployed in MANETs. Some examples are audio/video conferencing, multiplayer games, and online public debating. Signaling is the nerve center of multimedia conferences-it establishes, modifies, and tears down conferences. This paper focuses on signaling for multimedia conferences in MANETs. We review the state of the art and propose a novel architecture based on application-level clusters. Our validation employed SIP as the implementation technology and OPNET as our simulation tool. Our clusters are constructed dynamically and the nodes that act as cluster heads are elected based on their capabilities. The capabilities are published and discovered using a simple application-level protocol. The architectural principles and the clustering operations are discussed. Our SIP-based implementation is also presented along with the performance evaluation.

Published in:

Mobile Computing, IEEE Transactions on  (Volume:8 ,  Issue: 7 )