基于PeerCast的P2P流媒体节点选择机制的研究与改进  

Study and improvement of P2P streaming media node selection mechanism based on PeerCast

作　　者：黄道颖[1] 何海亮[1] 陈慧[1] 张安琳[1] 李建春[1] 

机构地区：[1]郑州轻工业学院计算机与通信工程学院,河南郑州450002

出　　处：《郑州轻工业学院学报（自然科学版）》2011年第3期58-62,共5页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：国家科技支撑计划项目(2006BAK01A38);河南省杰出青年科学基金项目(0612000600);河南省自然科学基金项目(611052300)

摘　　要：针对Overcast系统的延迟性能较差和节点树的平衡性问题,对其带宽优先算法延迟性能进行改进并对其节点结构树予以平衡.仿真实验表明,该算法相比于原来的节点选择算法,性能得到了明显的改善.The Overcast working process and principles of Cisco based on the PeerCast model were expounded,and the node selection strategy of Overcast system was analyzed,the delay performance of bandwidth priority algorithm was improved and node structure tree was also balanced.The simulation results showed that the performance of this new algorithm was better than the original node selection algorithm.

关 键 词：PeerCast 节点选择机制 带宽优先 延迟 树平衡 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]