分布式视频点播系统中代理视频服务器的效率模型  

Efficiency model of proxy video server in distributed video on demand system

作　　者：孙松林[1] 

机构地区：[1]北京邮电大学信息工程学院,北京100876

出　　处：《通信学报》2006年第5期130-134,共5页Journal on Communications

摘　　要：针对传统的成本代价模型无法体现出系统网络和存储资源利用率的问题,考察代理服务器上单位时间内单位容量的服务用户数,并考虑了不同级网络成本的差异,提出了效率模型。通过对常用多播协议的比较,利用效率模型对代理服务器的性能进行了详细讨论。仿真实验表明,效率模型对分布式视频点播系统的设计和评估非常有效。The traditional cost models were difficult to show the efficiency of the network and storage in the system. To solve this problem, based on the introduction of the common multicast protocols, the efficiency model was proposed to evaluate the system performance under several transmission protocols, The user number to be serviced in the unit time by the unit storage of the proxy video server was considered in the efficiency model. The cost comparison between the different networks was also considered in the efficiency model. Through the simulation, designing and evaluating the proxy server will be benefit from this efficient model greatly.

关 键 词：多媒体通信 视频点播 代理服务器 效率模型 

分 类 号：TN919[电子电信—通信与信息系统]