IPTV机顶盒关键技术研究

发布时间：2018-01-12 20:21

本文关键词：IPTV机顶盒关键技术研究　出处：《华中科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：IPTV是三网融合的代表，正在以飞快的速度发展，IPTV终端的数目随着IPTV的发展不断的增加，人们对IPTV业务和终端智能化的需求不断增长,各种扩展应用层初不穷，终端管理也越来越受到人们的重视。通过将J2ME模拟器MicroEmulator移植到Android平台下以中间件的形式实现了IPTV的一种扩展应用，解决了J2ME平台与Android平台在界面显示、绘图接口、事件处理、虚拟机等方面的兼容性问题。其中，J2ME虚拟机与Android Dalvik虚拟机的兼容性问题是通过在J2ME框架下再增加一个Dx层解决的。测试结果表明，移植策略是可行的，虽然在Dx层将一个jar包中所有的class文件一次性转化为dex文件然后给Dalvik运行的策略在第一次运行jar包时会带来一定的时延，但从长远来看，这种策略与直接解释运行class文件相比有一定的优势。使用NPAPI实现了一个J2ME浏览器插件，将以一个单独的应用程序来实现J2ME中间件和以浏览器插件的形式来实现中间件的方式进行了对比研究，由于插件会给浏览器的稳定性造成影响，以一个单独的应用程序实现中间件的策略有一定的优势。根据中国电信IPTV3.0标准对机顶盒与终端管理系统接口的定义与要求，实现了TR-069协议，包括对RPC层、SOAP层、HTTP层、TCP层的实现。对RPC层，，解决了RPC接口的定义与实现；对于SOAP层，解决了SOAP报文的组装与解析问题；对于HTTP层，解析了将SOAP报文封装成HTTP报文发送出去的问题；对于TCP层，解决了端口监听的问题。最后，论述了如何使用TR-069协议进行终端管理。
[Abstract]:IPTV is the representative of the integration of three networks. The number of IPTV terminals is increasing with the development of IPTV. The demand for IPTV service and terminal intelligence is increasing, and various extended application layers are not poor. Terminal management is paid more and more attention. By transplanting J2ME simulator MicroEmulator to Android platform, a kind of extension application of IPTV is realized by middleware. It solves the compatibility problems between J2ME platform and Android platform in interface display, drawing interface, event handling, virtual machine and so on. The compatibility between J2ME virtual machine and Android Dalvik virtual machine is solved by adding another DX layer in J2ME framework. The test results show that the migration strategy is feasible. Although the policy of converting all class files in a jar package into dex files at one time at the DX layer and then running it to Dalvik will cause some delay the first time the jar package is run. In the long run, however, this strategy has some advantages over the direct interpretation of running class files. A J2ME browser plug-in is implemented using NPAPI. Will implement J2ME middleware with a separate application and browser plug-in to implement middleware way to compare, because the plug-in will affect the stability of the browser. The strategy of using a single application to implement middleware has some advantages. According to the definition and requirement of the interface between set-top box and terminal management system in IPTV3.0 standard of China Telecom, the TR-069 protocol is implemented, including the RPC layer and soap layer. Implementation of TCP layer. For RPC layer, the definition and implementation of RPC interface are solved. For SOAP layer, the problem of SOAP packet assembly and parsing is solved. For the HTTP layer, the problem of encapsulating SOAP packets into HTTP packets is analyzed. For TCP layer, the problem of port monitoring is solved. Finally, how to use TR-069 protocol for terminal management is discussed.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN949.292

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