A Physical Topology Related Overlay Network for the P2P Media Streaming System

Selecting partner candidates for data transferring plays an important role in the P2P (peer-to-peer) media streaming system. Most traditional P2P media streaming systems do not consider the physical network among the peers, while selecting partner candidates according to physical network can reduce the latency of the data transferring and improve the quality of service. Aiming at objectives of P2P media streaming system, such as low latency, high QoS, scalability, this paper provides a new method called LandLive which estimates the distance between peers based on landmark network measurement method, and then builds the physical topology related overlay network. The paper also describes detailed algorithms for distance estimation and partner candidates selected method. The simulation demonstrates LandLive can improve the performance of the streaming system significantly.