文档介绍：华中科技大学硕士学位论文视频监控系统中视频调度的研究与设计姓名:李俊华申请学位级别:硕士专业:通信与信息系统指导教师:韩涛 20090523 I 华中科技大学硕士学位论文摘要视频监控系统作为延伸管理人员视野的有效工具,它在降低高速公路的事故率、提高道路的通行率等方面发挥了重要作用,是高速公路营运健康发展的重要保证。由于系统资源等方面的限制,大量视频数据在网络上的传输状况并不理想,如果不加以合理的调度和控制,极易造成网络的拥塞和服务质量的下降,从而影响到视频监控系统发挥的作用。为了解决上述问题,本文从如何更加有效的利用系统资源出发,针对光纤路由选择、以太网组播等问题进行了一系列的研究,提出了一些可行的解决方案。首先,介绍了现有的光纤路由算法,并且针对它们的不足,提出了一种新的链路权重评价标准,针对网状网和环网不同的拓扑结构特点,设计了不同的路由解决方案; 其次, 分析了因特网中组播技术的必要, 讨论了现有的组播技术, 并利用 IGMP Snooping 技术实现了视频数据的二层组播;随后,提出了一种高优先级通道的建立方案,该方案在高级别用户有业务需求而网络资源又不能满足其要求时,能够回收部分低级别用户资源,从而满足高级别用户的业务需求;最后,对本文提出的基于跳数和负载的路由算法进行了仿真。实验表明,与现有的最小跳数和最小负载算法相比,该算法在业务强度比较大时能够更加有效的利用网络资源,降低网络的拥塞率。关键词: 视频监控系统光纤路由组播组管理协议侦听 II 华中科技大学硕士学位论文 Abstract As an effective tool for highway managers to extend their visi on, video surveillance system plays an important role in reduci ng highway accident rate and improving traffic flow, it is an important guarantee for the hea lthy development of highway. However, due to the constraints of system resources, the video data transmission on work is not satisfactory with the data amount increasi ng, if the scheduling and control are not reasonable, network congestion and decline in the quality of service may happen, thus affecting the function of vi deo surveillance system. In order to solve the above problems, this paper mainly researches how to use system resources more effectively, studies many problems such as fiber routing and multicast in the and puts forward a series of possible solutions. Firstly, the existing fiber-optic routing algorithms are introduced, in order to e their ings, a new criterion for evaluating link weight is proposed. Since the topology is different in work a nd work, different routing algorithms are designed in this thesis; Secondly, this th esis discusses the necessary to use multicast in the and analyses the existing multi cast technologies, then uses IGMP Snooping technology to achieve multicast on data-link layer; Thirdly, a method of establishing high-priority chan