P2P流媒体业务技术分析与设计

Analysis and Design of P2P-Based Streaming Media Services

基于对等网络(P2P)模式的业务和应用给传统互联网带来了巨大的影响,如何更有效地利用P2P技术来发展新的增值业务,是P2P业务开展各方迫切需要解决的问题。新兴P2P流媒体运营商、主流数字媒体运营商、电信运营商业务实现方案及部署思路各不相同。对于电信运营商,目前网络上P2P应用最成熟的模式为P2P直播,初期开展业务容易,用户接受程度较高。建议运营商结合自身的带宽资源对业务流量采用"疏"、"堵"、"用"相结合的手段,先期实现P2P直播业务,逐步尝试开展P2P下载和点播业务,同时加强P2P流媒体业务的安全保障系统方案及开展该业务可能的盈利模式的研究,使P2P流媒体业务成为的电信运营商转型和发展的重要支撑业务。

P2P services and applications bring enormous impact to the current lnternet. Using P2P technology to more effectively create new value-added services is a key problem that each part of the P2P industrial chain has to solve. There are different services realization plans and formal operation deployment thoughts among new P2P streaming media providers, mainstream digital media carriers and telecommunications carriers, On-line live broadcast based on P2P is the most popular business model for telecommunications carriers now. It is easy to be deployed at the initial stages and to b accepted by user. According to the present situation of network resources, telecommunications carriers should comprehensively adopt ＂redistributing＂, ＂control＂ and ＂using＂ approaches to deal with P2P traffic. Firstly, telecommunications carriers should realize P2P living broadcast services, and then develop P2P downloading and Video on Demand （VOD） services. Meanwhile researching the security infrastructure about P2P streaming media services and its profit model, telecommunication carriers could make P2P streaming media services become important supporting services during carriers＇ restructuring and developing.