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Peer-to-Peer Error Recovery for Hybrid Satellite-Terrestrial Networks

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5 Author(s)
Weigle, E. ; Comput. Sci. & Eng., California Univ., San Diego, CA ; Hiltunen, M. ; Schlichting, R. ; Vaishampayan, V.A.
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Media companies (and other organizations with large amounts of digital content) require prompt broadcast of extremely large files from a single source to a collection of geographically dispersed destinations. Due to the high cost of terrestrial networks of sufficient bandwidth, satellite networks are commonly used for such transfers. However, current satellite transfers rely on expensive error correction via forward error correction and whole-file retransmission. This paper presents a new, hybrid solution combining the advantages of satellite and terrestrial networks to provide cost-effective reliable file transfer. Specifically, we propose a new peer-to-peer scheme exploiting fast terrestrial networks and multiple receivers to recover from high loss rates (5% or more) in near real-time (latency < 400ms). This solution is efficient, robust under variable packet loss and connectivity, user tunable, scales well, and doubles bandwidth compared to existing approaches. The system has been validated via extensive simulations using a terrestrial network based on the AT&T common backbone core network

Published in:

Peer-to-Peer Computing, 2006. P2P 2006. Sixth IEEE International Conference on

Date of Conference:

6-8 Sept. 2006

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