Mobility

Adaptation of Bittorrent for Heterogeneous Networks and ISPs- Constraints

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Executive Summary

The Bittorrent P2P (Peer-To-Peer) network is now well-known and widely used. In Europe, it is mainly used with people connected to ADSL networks. However, with the emergence of various access networks with various capabilities (bandwidth, delay, etc.) the authors might wonder if Bittorrent is well suited to those heterogeneous networks. Moreover, some mobile 3G network operators even forbid the use of P2P networks in their contract (and eventually block it) because it overloads the shared wireless links. This heterogeneity of networks as well as the possibility that ISPs block P2P traffic could have an impact on the Bittorrent system. This is what this paper addresses with simulations of a swarm composed of peers, connected to heterogeneous access networks.

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