FLHyO: fuzzy logic based hybrid overlay for P2P live video streaming

摘要

In recent times, enormous growth has been observed in the field of media streaming and real-time communication using peer-to-peer (P2P) network. The popularity of P2P network for live streaming can be credited to its fundamental characteristics such as a decentralized model, low complexity and scalability. Some of the key factors that affect the performance of P2P live streaming are overlay, scheduling schemes and selfish peer. Many structured and unstructured P2P overlay construction techniques have been introduced till now. But both type of overlays have proven to be inadequate in fulfilling the requirements of today's streaming systems. Generally, the peers in a P2P network are heterogeneous, isolated and mobile in nature. It is difficult to construct an overlay in such a way that resource utilization along with other QoS parameters in the network is maximal. So in this paper, we propose a novel Fuzzy Logic based Hybrid Overlay (FLHyO). FLHyO uses the fuzzy system for determining the priority of each peer during overlay creation. Some of the other factors considered by FLHyO for overlay creation are geographical location, upload bandwidth, age and utilization of a peer. A comparative analysis of FLHyO with some of the landmark overlay approaches verifies that our proposed approach provides better quality of service (QoS) in the network and also improves the video quality at receiver side.