摘要
采用P2P技术的VoD系统(PVoD)已经成为当前的研究和应用热点,但在中心PVoD系统中,节点没有提供视频数据上传服务的积极性,并且,系统在提供热门影片点播时,少数节点上的巨大服务压力导致了请求用户很低的播放质量。针对这种情况,提出了一整套基于信用度的用户主动热门影片预部署方案,并进行了详细实现。最后的仿真结果证实:方案能有效激励用户参与视频数据上传服务,分散了系统热门影片点播服务压力,大幅度提高了用户影片播放速率。
Nowadays,VoD system using P2P techniques（PVoD） is receiving high research and application attention,But,the user has no data uploading positivity and low quality of service in centralized PVoD system while providing hot films demanding service.This paper presents a full set of credit-based user active hot films pre-allocation scheme and introduces the implementation. Finally,the simulation result proves that,the new approach can lead to more incentive users for data uploading,furthermore,can distribute the hot films service pressure and improve the playback rate effectively.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第25期200-203,共4页
Computer Engineering and Applications
基金
国家高技术研究发展计划(863)(the National High-Tech Research and Development Plan of China under Grant No.2005AA103320)
国家发改委基金项目(the Foundation of National Development and Reform Commission No.科发函字[2005]54 号) 。
