普适多媒体信息发布系统的构建  

Building of pervasive multimedia message distribution system

作　　者：刘传[1,2] 王毅[1] 胡明清[2] 陈益强[2] 

机构地区：[1]湘潭大学信息工程学院,湖南湘潭411105 [2]中国科学院计算技术研究所普适计算中心,北京100190

出　　处：《计算机工程与设计》2011年第1期103-106,共4页Computer Engineering and Design

基　　金：国家863高技术研究发展计划基金项目(2007AA01Z305)

摘　　要：设计了一种基于龙芯2F的低成本多媒体信息发布系统,并提出了一种基于请求属性的更新调度算法。硬件体系结构以龙芯2F作为服务器CPU,CDMA、WiFi和有线多模更新模块,蓝牙推送模块等构成,软件环境为Linux操作系统。更新调度算法依据应用场景对请求加权予以最优调度,较好地降低了由于等待延迟而产生的系统开销。实验结果表明,系统运行稳定,更新响应实时性高,能够较好地满足用户需求,而且更新调度算法使系统各项指标均好于传统的FCFS算法。An efficient multimedia distribution system based on LOONGSON-2F is designed,and a novel schedule problem for distributing the content based on the request attributes is presented.The hardware part consists of a sever equipped with LOONGSON-2F, CDMA,WiFi,Ethernetmultimode update module,and the bluetooth push module,etc.The software environment is Linux operation system.The schedule algorithm of request chooses the priority-based strategy which is tailored to the application scene,which reduces the delay time caused by computing overload.The system runs with high reliability,as well as short response time,which meets the user requirement.The schedule algorithm more better than the traditional FCFS algorithm.

关 键 词：多媒体信息服务 普适网络环境 加权调度算法 蓝牙 龙芯2F 

分 类 号：TP339[自动化与计算机技术—计算机系统结构]