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Title: Stochastic relay routing in peer-to-peer networks
Authors: Hei, Xiaojun
Song, Haiqing
Keywords: Network Address Translation (NAT)
Peer-to-peer networks
Relay routing algorithm
Stochastic programming
Issue Date: 2006
Citation: To be published in Proceedings 41st IEEE International Conference on Communications (ICC 2006), Istanbul, Turkey, 11-15 June, 2006
Abstract: Network Address Translation (NAT) commonly prevents nodes without globally valid IP addresses from establishing direct Internet paths. In peer-to-peer networks, peers may utilize intermediate nodes as relays for this NAT traversal. We develop a stochastic relay routing algorithm for selecting appropriate relay nodes. The proposed relay routing algorithm is constructed in a stochastic programming framework by leveraging the actual delay of local links and the statistical delay distributions of non-local overlay links. Single or multiple paths are established via relays between two peers for achieving packet delivery with low delay and small loss. The simulation results showed that the proposed stochastic single/multi-path routing algorithm achieved a much lower packet delay than deterministic shortest path algorithms, which utilize average link delays. We demonstrated the effectiveness of the path diversity provided by our algorithm in reducing packet loss significantly via simulations. Our algorithm is fully distributed and requires only accurate local information. The employment of our algorithm is beneficial for provisioning real-time streaming applications in peer-to-peer networks.
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