河北廣電基于NGOD規(guī)范的交互式數(shù)字電視VOD點播系統(tǒng)
發(fā)布時間：2018-09-05 11:24
【摘要】：進入新世紀(jì)以來,伴隨信息技術(shù)的飛速發(fā)展以及用戶對多業(yè)務(wù)需求不斷加強,以傳統(tǒng)的電信網(wǎng),互聯(lián)網(wǎng)和有線電視網(wǎng)獨立運營以承載業(yè)務(wù)的發(fā)展模式不斷相互滲透,相互融合,“三網(wǎng)融合”的發(fā)展模式成為信息產(chǎn)業(yè)發(fā)展的趨勢。目前一些廣電運營商建設(shè)了DVB系統(tǒng),向有線電視用戶提供數(shù)字電視廣播服務(wù),進行數(shù)字電視整體平移；但DVB交互性不強,無法提供實時的交互視頻服務(wù)；這些缺陷使得運營商將眼光更多的轉(zhuǎn)向了交互電視。交互電視是利用寬帶網(wǎng)絡(luò),以家用電視機(需配置機頂盒)作為主要收視終端,通過互聯(lián)網(wǎng)絡(luò)協(xié)議來提供包括電視節(jié)目在內(nèi)的多種交互式數(shù)字媒體服務(wù)。它能夠向用戶提供高質(zhì)量數(shù)字媒體服務(wù)、選擇節(jié)目的自由、與運營商的實質(zhì)性互動以及豐富的應(yīng)用內(nèi)容。除視頻類業(yè)務(wù)外,在交互電視上能夠集成多種交互類視頻和數(shù)據(jù)有機結(jié)合的應(yīng)用(如電視郵箱、教育類、游戲類、個人信息等)。 首先,本文在討論河北廣電交互式數(shù)字電視VOD點播系統(tǒng)的項目背景并針對河北廣電的實際情況,進行了詳細(xì)的需求分析,并針對需求分析用詳細(xì)的用例圖及流程圖進行說明。 在需求分析基礎(chǔ)上,我們基于NGOD規(guī)范進行了河北廣電交互式數(shù)字電視VOD點播系統(tǒng)整體架構(gòu)設(shè)計。首先根據(jù)系統(tǒng)需求提出系統(tǒng)建設(shè)目標(biāo)跟原則,然后分別對系統(tǒng)整體部署架構(gòu)和功能架構(gòu)進行了設(shè)計。系統(tǒng)的整體部署架構(gòu)從突出河北廣電網(wǎng)絡(luò)統(tǒng)一品牌,統(tǒng)一經(jīng)營,統(tǒng)一部署的好處,集約化經(jīng)營,節(jié)約成本等方面考慮,采用分布式部署。在功能架構(gòu)設(shè)計中,討論了系統(tǒng)各部分的功能組成,最后給出一整套的功能需求解決方案。 在系統(tǒng)部署的設(shè)計中采用分布式三層部署的模式,中心節(jié)點主要部署B(yǎng)O, CDN的中心組件。其中BO中心節(jié)點的組件實現(xiàn)內(nèi)容編排,門戶展現(xiàn),廣告功能等業(yè)務(wù)需求的實現(xiàn)；CDN中心節(jié)點的組件實現(xiàn)內(nèi)容的接受以及對地市CDN節(jié)點的分發(fā)；地市核心節(jié)點主要部署B(yǎng)O, CDN的地市節(jié)點組件。其中BO地市節(jié)點組件實現(xiàn)對推流服務(wù)器以及CDN的管理,用戶管理,地市EPG展現(xiàn),資源管理；CDN地市節(jié)點組件主要負(fù)責(zé)接受中心CDN分發(fā)的內(nèi)容并將內(nèi)容分發(fā)到地市邊緣節(jié)點的推流服務(wù)器中。地市邊緣節(jié)點主要部署B(yǎng)O以及VSS(推流服務(wù)器)的地市邊緣節(jié)點組件,地市邊緣節(jié)點的BO組件主要實現(xiàn)與機頂盒的數(shù)據(jù)交互；地市邊緣節(jié)點的推流服務(wù)器主要負(fù)責(zé)對機頂盒提供流服務(wù)。 在系統(tǒng)功能設(shè)計實現(xiàn)上主要考慮內(nèi)容與頁面展現(xiàn)兩方面的需求。內(nèi)容方面通過內(nèi)容管理系統(tǒng)(ICMS)進行內(nèi)容的采集與管理,并通過內(nèi)容分發(fā)系統(tǒng)(CDN)進行內(nèi)容的分發(fā),最終由推流服務(wù)器對用戶機頂盒提供視頻服務(wù)。頁面展現(xiàn)(EPG)方面通過門戶管理系統(tǒng)(CLPS)進行頁面的設(shè)計,內(nèi)容元數(shù)據(jù)的調(diào)用,廣告的展現(xiàn)以及其他外部系統(tǒng)的展現(xiàn),如公共資訊,天氣預(yù)報,政務(wù)資訊等信息的展現(xiàn)。 論文最后介紹了通過壓力測試工具對系統(tǒng)并發(fā)數(shù)的測試以滿足系統(tǒng)對用戶壓力承載需求。
[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.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP311.52;TN948.64
本文編號：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.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP311.52;TN948.64
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