混合结构视频网格的构造与性能分析  

Design and performance analysis of video grid of mixed architecture

作　　者：赵宏[1,2] 吾守尔.斯拉木 姚正亮[2] 尹磊[2] 

机构地区：[1]新疆大学信息科学与工程学院,乌鲁木齐830046 [2]兰州理工大学计算机与通信学院,兰州730050

出　　处：《计算机工程与应用》2010年第15期77-80,共4页Computer Engineering and Applications

基　　金：甘肃省科技支撑计划No.090GKCA040;甘肃省基金No.2008GS00563~~

摘　　要：针对可扩展视频网格结构中,由于加盟服务器数量不足所引起的区域服务器负载波动随在线用户数量变化过大的问题,引入P2P技术构造混合结构的视频网格,实现普通客户端之间视频流数据的直接传输。论述了P2P点播组的构成,资源的管理和调度算法,异常情况的处理过程。实验表明,混合结构的视频网格具有较好的性能,能够降低区域服务器负载的波动范围。Aiming at the problem that the payloads of local servers are tempestuously fluctuating along with the movement of amount of on-line user in the video grid of multilevel architecture because the absence of temporary servers,the video grid of mixed architecture based on the video grid of multilevel architecture and the peer-to-peer technology is produced to transmit video stream data between the normal clients directly.The construction of the service channel based on peer-to-peer,the management and scheduler of resource,and the exceptional case during the service process are discussed in detail.The simulating result shows that the video grid of mixed architecture has the better performance and lower payload fluctuation for the local server than the video grid of multilevel architecture.

关 键 词：视频网格 P2P 点播组 资源调度 视频流数据 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]