分层的应用层组播协议研究  

Research on Hierarchical Application Layer Multicast Protocol

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：《计算机工程》2008年第16期119-121,共3页Computer Engineering

摘　　要：在P2P视频直播网络中,用户频繁地加入或离开组播组会造成数据传输中断。该文提出一种新的基于分层分簇思想的应用层组播协议,基于视频直播中的用户行为分析,通过分层获得一个有效层来减少组播树中的节点失效次数。仿真实验表明,该协议能够有效提高稳定性,减少平均组播时延并具有可扩展性。Data delivery can be easily interrupted by departure of end hosts in P2P live streaming network, which may lead to degradation of QoS in time-sensitive applications. This paper proposes a new layered and clustering protocol. Based on user behavior analysis in live streaming, it can keep a level of efficiency while reduce the interruption times of Application Layer Multicast（ALM） tree. Simulation results show that the protocol can effectively boost up the robustness, reduce the average ALM latency, and satisfy the scalability.

关 键 词：点对点 应用层组播 用户行为分析 视频直播 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]