L-CAN: Locality Aware Structured Overlay for P2P Live Streaming

Authors:
Nikolaos Efthymiopoulos;Athanasios Christakidis;Spyros Denazis;Odysseas Koufopavlou
Affiliations:
Department of Electrical and Computer Engineering, University of Patras, Patras, Greece;Department of Electrical and Computer Engineering, University of Patras, Patras, Greece;Department of Electrical and Computer Engineering, University of Patras, Patras, Greece;Department of Electrical and Computer Engineering, University of Patras, Patras, Greece
Venue:
MMNS '08 Proceedings of the 11th IFIP/IEEE international conference on Management of Multimedia and Mobile Networks and Services: Management of Converged Multimedia Networks and Services
Year:
2008

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Abstract

A p2p streaming system must be able to exploit the locality information between peers, in order to deliver a stream quickly to all peers with high level of bandwidth utilization. In this paper we propose a locality aware and balanced overlay for p2p live streaming which can adapt to the dynamic behavior of the participating peers and the underlying network. Our overlay is created and maintained through the use of two algorithms, called the placement and the swapping algorithm that we consider as the major contributions in this paper. These are responsible for the insertion of a node and the dynamic and distributed optimization of the overlay in order to reflect the underlying network. The proposed overlay is evaluated through extensive simulations that show that the bandwidth utilization of the peers and the set-up time are significantly improved through locality between peers.