Abstract
In peer-to-peer (P2P) networks, free-riders and redundant streams including overlapped and folded streams dramatically degrade playback quality and network performance, respectively. Although a locality-aware P2P live video can reduce the topological complexity, it cannot effectively avoid redundant streams while denying free-riders. In this paper, we first model free-rider, redundant streams and a distance-driven P2P system. Based on that model, a distance-driven alliance algorithm is proposed to construct not only an alliance that directly prevents any utility gains of free-riders through inter-user constraints but also a small-world network or a multicast tree that effectively reduces redundant streams. Finally, simulations confirm its advantages in functionality and performance over several existing strategies and distance-driven P2P live video systems.
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