基于界面带宽和时延约束的应用层组播路由算法  

An application-layer multicast routing algorithm based on bounds of interface bandwidth and delay constrain

作　　者：李冬锋[1] 赵娟[1] 

机构地区：[1]华北水利水电学院,河南郑州450011

出　　处：《水利电力机械》2007年第9期89-90,93,共3页Water Conservancy & Electric Power Machinery

摘　　要：由于IP多播在应用上的困难,应用层网络作为多播服务平台逐步被人们认可。针对实时多媒体应用对界面带宽需求和时延约束的特性,提出了一种新的构造应用层最小直径多播树的启发式算法PCT,该算法结合深度可调的广度优先搜索策略,根据界面带宽和时延的策略函数选择既满足要求又节约网络资源的路径。　Due to the difficulties in application of IP multicast, the application-layer network is being increasingly recognized as a general multicast service infrastructure.Aiming at the requirement for interface bandwidth and delay constrains,A new heuristic algorithm based application-layer multicast is put forward to build a minimum delay diameter multicast tree.Combined with the depth adjustable optimum search strategy,the path is selected to save network resources without violating the constraints by the strategy function of interface bandwidth and delay.

关 键 词：应用层组播 界面带宽 时延约束 资源利用 策略函数 

分 类 号：TN919.1[电子电信—通信与信息系统]