Design and Implementation of Service Control Server in IMS-Based IPTV

2010 International Conference on Internet Technology and Applications Pub Date : 2010-09-09 DOI:10.1109/ITAPP.2010.5566270

Jinghua Lin, Dongjin Yu, Shiquan Xiao

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引用次数: 1

Abstract

IMS-based IPTV is an important research direction in next generation IPTV, in which Service Control Server (SCS) as an IMS application server is one of the most critical network entities. By the comparison of differences in behavior of various SIP entities, such as Proxy Server, Virtual User Agent (VUA), Back-to-Back User Agent and Redirect Server, combined with the characteristic of different IPTV services, such as Broadcast, Content on Demand (CoD), Time-shift Television, and network-side Private Video Record, some suggestions have been given on how to choose the SIP entities for SCS. After that, a general layered architecture for SCS has been designed, which can be used for different SIP entities, especially a modification has been made for VUA with the signaling and media function integration. Based on the analysis of SIP signaling and RTSP media control flows, the service state machine on the top layer in SCS has been designed through the mapping relationship of session event and service logical states. Further more, taking the CoD service as an example, we implement a SCS prototype and the technical feasibility has been verified.

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ims IPTV中业务控制服务器的设计与实现

基于IMS的IPTV是下一代IPTV的一个重要研究方向，其中业务控制服务器(Service Control Server, SCS)作为IMS应用服务器是最关键的网络实体之一。通过比较代理服务器、虚拟用户代理(VUA)、背靠背用户代理和重定向服务器等各种SIP实体的行为差异，结合广播、内容点播、时移电视和网侧专用视频录制等不同IPTV业务的特点，对SIP实体的选择提出了一些建议。在此基础上，设计了一种适用于不同SIP实体的通用分层体系结构，特别是对VUA进行了改进，实现了信令和媒体功能的集成。在分析SIP信令和RTSP媒体控制流的基础上，通过会话事件与业务逻辑状态的映射关系，设计了SCS顶层的业务状态机。并以CoD服务为例，实现了SCS原型，验证了其技术可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2010 International Conference on Internet Technology and Applications

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