一种P2P流媒体分发调度算法在嵌入式系统中的实现  

P2P Media Streaming Delivery Scheduling Algorithm for Embeded System

作　　者：左冬红[1] 万佳[1] 

机构地区：[1]华中科技大学电子与信息工程系,湖北武汉430074

出　　处：《小型微型计算机系统》2009年第9期1882-1884,共3页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60773193)资助;湖北省武汉市青年科技晨光计划项目(200850731351)资助

摘　　要：基于Coolstreaming系统设计思想,针对嵌入式系统计算能力弱存储小的特点,为减少控制信息和调度传输时间,对其交换机制以及启发式算法进行改进,提出一种适用于IPTV环境的调度算法使其适合嵌入式IPTV机顶盒应用.通过局域网对应用此算法的嵌入式系统进行测试,结果表明使用该算法节点处理开销小,能为大量IPTV用户提供高质量的直播服务.Embeded system has weak computer power and small storage. In order to reduce control information and scheduling time, this paper presents a scheduling algorithm based on Coolstreaming scheduling policy , analyzes data scheduling policy using new exchange mechanism and heuristic algorithm. The new algorithm is properly designed according to the characteristic of STB and application environment of IPTV. The test result shows that the scheduling algorithm used in embedded system can reduce the overhead of peers efficiently and provide high quality live streaming service to vast number of STB users.

关 键 词：P2P 嵌入式 数据调度 流媒体 IPTV 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]