远程教育网络中的多媒体资源调度技术研究

Research on multimedia resource scheduling technology in distance education network

为了提高远程教育网络中的多媒体资源的访问和检索能力,实现教育资源共享,提出一种基于嵌入式优先级列表控制的远程教育网络中多媒体资源调度技术。分析嵌入式远程教育网络的多媒体资源分布的内核结构模型,对资源信息流进行非线性时间序列拟合,采用平滑滤波方法将多媒体资源的执行时间窗口划分为一组均匀分布的时隙,在嵌入式系统中实现资源出入栈的优先级列表控制,实现资源调度优化。仿真结果表明,采用该方法进行远程教育网络多媒体资源调度,提高了资源分配的均衡性和资源利用率。

In order to improve the access and retrieval ability of multimedia resources in the distance education network, and realize the educational resource sharing, a multimedia resource scheduling technology based on control of the embedded pri- ority list is proposed for the remote education network. The kernel structure model of the multimedia resource distribution of the remote education network is analyzed. The nonlinear time series for information flow of the resources is fitted. The smoothing fil- tering method is adopted to divide execution time window into a set of uniform distribution time slots, so as to realize the priori- ty list control that the resource come in and go out of the stack in the embedded system, and achieve resource scheduling optimi- zation. The simulation results show that the method for multimedia resource scheduling of the remote education network can im- prove the balance of resource allocation and utilization rate of resources.