基于用户行为分析的NICE协议研究  

Research on NICE Protocol Based on User Behavior Analysis

作　　者：张秋余[1] 随冬梅[1] 

机构地区：[1]兰州理工大学计算机与通信学院,兰州730050

出　　处：《无线通信技术》2007年第3期41-44,共4页Wireless Communication Technology

基　　金：甘肃省自然科学基金项目资助(3ZS062-B25-037)

摘　　要：在Internet视频直播服务中,应用层组播具有广阔的应用前景。但P2P网络中终端主机可以自由的退出组播树,这对实时性要求严格的视频直播应用的影响尤为严重。本文通过分析终端节点的稳定性,并考虑终端节点的服务能力,针对NICE协议的缺点,提出一种新的簇首选择算法。经实验证明,此算法在改进系统延迟、稳定性方面有较大的提高。Application layer multicast （ALM） which uses end hosts to relay data has a prosperous prospect in media server. But data delivery in ALM tree can be easily interrupted by departure of end hosts in P2P network, which may lead to degradation of QoS in time- sensitive applications such as live streaming. This paper proposes a new cluster-leader selected algorithm based on the analysis of end hosts＇ stability and capabilities. When compared with NICE protocol via simulation, the enhanced protocol provides lower end-to- end delay and higher robustness.

关 键 词：P2P 应用层组播 簇首选择 用户行为分析 视频直播 

分 类 号：TN915[电子电信—通信与信息系统]