基于拓扑感知的流媒体编码和应用层组播系统设计

Design of streaming media coding and application layer multicast system based on topology perception

目前组播系统普遍存在严重的延时问题,导致组播系统数据传递效率低影响用户对网络的体验。为了解决该问题,文中设计基于拓扑感知的流媒体编码和应用层组播系统。硬件设计方面,在目前组播系统硬件设计的基础上,设计系统总体架构,确定系统硬件配置。软件设计方面,利用拓扑感知的感知数据功能,建立组播系统客户端,包括数据采集模块、数据处理模块和用户管理模块,对用户数据进行采集、处理,管理用户列表变化;确定组播系统协议内容,构建组播网,降低系统网络带宽延迟和损耗问题。设计系统与两个传统系统进行对比实验,设置测试网络和文件格式,改变数据传递时间和文件大小,实验结果表明,所设计系统文件传输效率高,具备更好的数据传递性能。

Since the current multicast system has serious delay,which affects the user's experience on the network,and results in low efficiency of data transmission in multicast system,a streaming media coding and application layer multicast system based on topology perception is designed.In terms of hardware design,the overall architecture of the system is designed on the basis of hardware design of the current multicast system,and the hardware configuration of the system is determined.In the aspect of software design,the client⁃side of multicast system is established,including data acquisition module,data processing module and user management module,to collect and process user data,and manage the change of user list;the protocol content of multicast system is determined,and multicast network is built to reduce the delay and loss of system network bandwidth.The designed system is compared with two traditional systems.The test network and file format are set to change the data transfer time and file size.The experimental results show that the system designed in this paper has higher file transmission efficiency and better data transfer performance.