摘要
远程教育是互联网中的重要应用,分布式的资源组织模式与大范围的教育受众覆盖是部署实施的关键。该文通过分布式资源网以实现资源共享,给出资源发布的通信过程和方法,研究了提高资源同步效率的端系统组播机制,设计了兼容IPv4和IPv6的IPDVB传输系统,用来满足向卫星接收终端用户递送资源的需求。
Distant education is an important and popular application for Internet, Distributed resource management and its communication mechanism for resource distribution are of great significance for wide deployment. A heterogeneous distributed resource network composed of terrestrial links and satellite channels is proposed to achieve resource management and distribution. Procedure of resource release is analyzed and a general model is given, End-system multicast method is presented to enhance the efficiency of resource synchronization, IPv4/IPv6 over DVB transmission system is designed for delivering resource to countryside users.
出处
《计算机工程》
CAS
CSCD
北大核心
2008年第4期280-282,共3页
Computer Engineering
基金
中国下一代互联网(GNGI)示范工程基金资助项目(20052137)
关键词
远程教育
分布式资源网
端系统组播
distant education： distributed resource network
end-system multicast
