河北广电基于NGOD规范的交互式数字电视VOD点播系统
发布时间：2018-09-05 11:24
【摘要】：进入新世纪以来,伴随信息技术的飞速发展以及用户对多业务需求不断加强,以传统的电信网,互联网和有线电视网独立运营以承载业务的发展模式不断相互渗透,相互融合,“三网融合”的发展模式成为信息产业发展的趋势。目前一些广电运营商建设了DVB系统,向有线电视用户提供数字电视广播服务,进行数字电视整体平移；但DVB交互性不强,无法提供实时的交互视频服务；这些缺陷使得运营商将眼光更多的转向了交互电视。交互电视是利用宽带网络,以家用电视机(需配置机顶盒)作为主要收视终端,通过互联网络协议来提供包括电视节目在内的多种交互式数字媒体服务。它能够向用户提供高质量数字媒体服务、选择节目的自由、与运营商的实质性互动以及丰富的应用内容。除视频类业务外,在交互电视上能够集成多种交互类视频和数据有机结合的应用(如电视邮箱、教育类、游戏类、个人信息等)。 首先,本文在讨论河北广电交互式数字电视VOD点播系统的项目背景并针对河北广电的实际情况,进行了详细的需求分析,并针对需求分析用详细的用例图及流程图进行说明。 在需求分析基础上,我们基于NGOD规范进行了河北广电交互式数字电视VOD点播系统整体架构设计。首先根据系统需求提出系统建设目标跟原则,然后分别对系统整体部署架构和功能架构进行了设计。系统的整体部署架构从突出河北广电网络统一品牌,统一经营,统一部署的好处,集约化经营,节约成本等方面考虑,采用分布式部署。在功能架构设计中,讨论了系统各部分的功能组成,最后给出一整套的功能需求解决方案。 在系统部署的设计中采用分布式三层部署的模式,中心节点主要部署BO, CDN的中心组件。其中BO中心节点的组件实现内容编排,门户展现,广告功能等业务需求的实现；CDN中心节点的组件实现内容的接受以及对地市CDN节点的分发；地市核心节点主要部署BO, CDN的地市节点组件。其中BO地市节点组件实现对推流服务器以及CDN的管理,用户管理,地市EPG展现,资源管理；CDN地市节点组件主要负责接受中心CDN分发的内容并将内容分发到地市边缘节点的推流服务器中。地市边缘节点主要部署BO以及VSS(推流服务器)的地市边缘节点组件,地市边缘节点的BO组件主要实现与机顶盒的数据交互；地市边缘节点的推流服务器主要负责对机顶盒提供流服务。 在系统功能设计实现上主要考虑内容与页面展现两方面的需求。内容方面通过内容管理系统(ICMS)进行内容的采集与管理,并通过内容分发系统(CDN)进行内容的分发,最终由推流服务器对用户机顶盒提供视频服务。页面展现(EPG)方面通过门户管理系统(CLPS)进行页面的设计,内容元数据的调用,广告的展现以及其他外部系统的展现,如公共资讯,天气预报,政务资讯等信息的展现。 论文最后介绍了通过压力测试工具对系统并发数的测试以满足系统对用户压力承载需求。
[Abstract]:Since entering the new century, with the rapid development of information technology and the increasing demand for multi-service from users, the traditional telecom network, the Internet and cable television network operating independently to carry business development model has been infiltrating and merging with each other, and the "three networks integration" development model has become the trend of the development of the information industry. Some broadcasting and television operators have built DVB systems to provide digital television broadcasting services to cable TV users, and carry out digital television translation as a whole; but DVB interactivity is not strong enough to provide real-time interactive video services; these shortcomings make operators turn their eyes to interactive television more. Video set-top box (STB) serves as the main viewing terminal to provide a variety of interactive digital media services, including television programs, through Internet protocols. It provides users with high-quality digital media services, the freedom to choose programs, substantive interaction with operators and rich application content. It can integrate a variety of interactive video and data on interactive television applications (such as television mailbox, education, games, personal information, etc.).
Firstly, this paper discusses the project background of Hebei Radio and TV Interactive Digital TV VOD System and analyzes the actual situation of Hebei Radio and TV in detail, and illustrates the requirement analysis with detailed use case diagram and flow chart.
On the basis of requirement analysis, we design the whole architecture of Hebei Radio and Television Interactive Digital TV VOD System based on NGOD specification. Firstly, according to the system requirements, we propose the system construction objectives and principles, and then design the overall system deployment architecture and functional architecture. Considering the advantages of unified brand, unified management, unified deployment, intensive management and cost saving, distributed deployment is adopted. In the design of functional architecture, the functional composition of each part of the system is discussed, and a complete set of functional requirements solution is given.
In the design of system deployment, the distributed three-tier deployment mode is adopted, and the central node mainly deploys BO and CDN central components. The core node mainly deploys BO and CDN local node components. BO local node component implements the management of push stream server and CDN, user management, local EPG display, resource management; CDN local node component mainly receives the content distributed by central CDN and distributes the content to push stream server of local edge node. The edge node mainly deploys BO and VSS (Push Stream Server) local edge node components. The BO component of the local edge node mainly implements the data interaction with STB. The Push Stream Server of the local edge node mainly provides the flow service to STB.
Content is collected and managed by Content Management System (ICMS) and distributed by Content Distribution System (CDN). Finally, the push stream server provides video service to the user's STB. Page Display (EPG) is adopted. The portal management system (CLPS) is used to design pages, invoke content metadata, display advertisements and other external systems, such as public information, weather forecast, government information, etc.
In the end, the paper introduces how to test the concurrency number of the system through the pressure testing tool to meet the pressure bearing requirement of users.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP311.52;TN948.64
本文编号：2224126
[Abstract]:Since entering the new century, with the rapid development of information technology and the increasing demand for multi-service from users, the traditional telecom network, the Internet and cable television network operating independently to carry business development model has been infiltrating and merging with each other, and the "three networks integration" development model has become the trend of the development of the information industry. Some broadcasting and television operators have built DVB systems to provide digital television broadcasting services to cable TV users, and carry out digital television translation as a whole; but DVB interactivity is not strong enough to provide real-time interactive video services; these shortcomings make operators turn their eyes to interactive television more. Video set-top box (STB) serves as the main viewing terminal to provide a variety of interactive digital media services, including television programs, through Internet protocols. It provides users with high-quality digital media services, the freedom to choose programs, substantive interaction with operators and rich application content. It can integrate a variety of interactive video and data on interactive television applications (such as television mailbox, education, games, personal information, etc.).
Firstly, this paper discusses the project background of Hebei Radio and TV Interactive Digital TV VOD System and analyzes the actual situation of Hebei Radio and TV in detail, and illustrates the requirement analysis with detailed use case diagram and flow chart.
On the basis of requirement analysis, we design the whole architecture of Hebei Radio and Television Interactive Digital TV VOD System based on NGOD specification. Firstly, according to the system requirements, we propose the system construction objectives and principles, and then design the overall system deployment architecture and functional architecture. Considering the advantages of unified brand, unified management, unified deployment, intensive management and cost saving, distributed deployment is adopted. In the design of functional architecture, the functional composition of each part of the system is discussed, and a complete set of functional requirements solution is given.
In the design of system deployment, the distributed three-tier deployment mode is adopted, and the central node mainly deploys BO and CDN central components. The core node mainly deploys BO and CDN local node components. BO local node component implements the management of push stream server and CDN, user management, local EPG display, resource management; CDN local node component mainly receives the content distributed by central CDN and distributes the content to push stream server of local edge node. The edge node mainly deploys BO and VSS (Push Stream Server) local edge node components. The BO component of the local edge node mainly implements the data interaction with STB. The Push Stream Server of the local edge node mainly provides the flow service to STB.
Content is collected and managed by Content Management System (ICMS) and distributed by Content Distribution System (CDN). Finally, the push stream server provides video service to the user's STB. Page Display (EPG) is adopted. The portal management system (CLPS) is used to design pages, invoke content metadata, display advertisements and other external systems, such as public information, weather forecast, government information, etc.
In the end, the paper introduces how to test the concurrency number of the system through the pressure testing tool to meet the pressure bearing requirement of users.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP311.52;TN948.64
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