[p2p][paper reading]Peer-to-Peer Live Video Streaming on the Internet:Issues, Existing Approaches, and Challenges
出處: IEEE communication magazine .June 2007 筆記: [Video Streaming challenges] High bit rate End-to-End delay requirement Packet loss Network congestion Stream Synchronization Lake of service guarantee [Encoding Perspective] layered-base coding ->Heterogeneity dynamic Error-resilient codec->Packet loss [Internet] Multicast->Reduce duplication of data CDN (content distributed network) ->Reduce end-to-end delay [observation]Many other factor can be more easily dealt with TCP->用於streaming可解決packet loss的問題 multi-segment and multi-path routing ->reduce congestion [Key feature in p2p system] Each node contributes resources (more node can increase system capacity) bandwidth storage computing power Robustness 不依賴centralized server [Multi-rate Multicast] IP Multicast Each link only once with out duplication Problem Heterogeneity -> 不同device的能力不同 Dynamic ->Best effort Internet video撥放的品質變化大 RLM用來解決此問題-&