ISP-Aware BitTorrent Traffic Optimization

BitTorrent-based applications incur massive cross-ISP traffic which heavily decreases Internet efficiency.Taking into account BitTorrent protocol specifications and connection structure among different ISPs,this paper proposes an ISP-aware BitTorrent traffic optimization scheme which is called STracker.STracker is composed of tracker proxies in different ISPs.Tracker proxies are connected with a P2P protocol.Tracker proxies perform node management and biased neighbor allocation.Therefore,the cross-ISP traffic is reduced.Analysis and simulations show that STracker can efficiently reduce the cross-ISP traffic while the download time is not increased.STracker can reduce the operation cost of ISPs and improve the efficiency of Internet efficiently.