支持多媒体视频监控的IMS应用服务器的设计与实现

发布时间：2018-04-02 12:14

本文选题：视频监控　切入点：IP多媒体子系统　出处：《东北大学》2014年硕士论文

【摘要】：多媒体视频监控业务虽然已经是成熟的互联网业务,但由于缺乏信令概念和相应体系,会话控制及相关的用户认证、授权和计费都比较困难,导致开展信息服务的技术门槛过高,难以通过网络带给人们生活的便利,多媒体视频监控业务的“商业化”和“公共服务”功能受到很多限制。多媒体视频监控业务作为典型的IP多媒体子系统(IPMultimedia Subsystem, IMS)业务是新一代通信业务发展的重要领域,它既满足IMS网络业务的要求,同时又满足运营商对电信业务可运营、可管理的要求。要视频监控成为信息服务产品“电子商务”中重要的一部分,视频监控需要通过IMS应用服务器与网络中其它功能整合,进一步加入IMS信令机制,整合为IMS新业务,可有效支撑视频监控业务的商业运营,同时也实现IMS业务的集成创新。因此作为IMS业务支撑环境主体的应用服务器在IMS业务中至关重要。本文设计实现了一种支持多媒体视频监控的IMS应用服务器,为了充分融合IMS业务架构,IMS应用服务器中各模块设计完全符合多媒体业务的信令逻辑规范和标准,采用B2BUA (Back-to-Back User Agent,背靠背用户代理)的应用服务器操作模式,便于业务的管控,还对媒体服务器的分发进行了负载均衡调整,提升了用户体验质量。本文主要研究内容和取得的成果是：1)研究并设计了支持多媒体视频监控的IMS应用服务器的功能架构和典型业务逻辑流程,并实现了业务的关键信令流程；2)提出了一种扩展会话描述协议的方法,用于支持多媒体业务会话协商中的媒体传输交互,并设计了相关的信令消息流程；3)提出了一种采用B2BUA的应用服务器操作模式的IMS应用服务器的设计方案,设计实现了支持多媒体视频监控业务的IMS应用服务器内部功能模块；4)设计了媒体服务器分发实体,并采用动态权值调整策略对媒体服务器进行负载均衡的分发调整。测试结果表明,本文设计实现的IMS应用服务器各项功能和运行效果满足了设计要求,可以稳定地支持多媒体视频监控业务的开展,并交付辽宁移动公司进行了应用示范。
[Abstract]:Although the multimedia video surveillance service is a mature Internet service, it is difficult for the lack of signaling concept and corresponding system, session control and related user authentication, authorization and billing. The technical threshold for information services is too high to bring convenience to people's lives through the Internet. The functions of "commercialization" and "public service" of multimedia video surveillance services are restricted by many limitations. As a typical IP multimedia subsystem, multimedia video surveillance services (IMSs) are important areas for the development of new generation communication services. It not only meets the requirement of IMS network service, but also meets the requirement that telecom service can be operated and managed. Video surveillance needs to integrate with other functions in the network through IMS application server, further join IMS signaling mechanism, and integrate into new IMS service, which can effectively support the commercial operation of video surveillance service. At the same time, it also realizes the integration innovation of IMS service. Therefore, the application server, which is the mainstay of IMS service supporting environment, is very important in IMS service. This paper designs and implements a kind of IMS application server which supports multimedia video surveillance. In order to fully integrate the design of modules in IMS application server, which conforms to the signalling logic specification and standard of multimedia service, B2BUA Back-to-back User Agent (back-to-back user Agent) is adopted to operate the application server, which is convenient for service management and control. The distribution of media servers has also been adjusted for load balancing, The main research content and achievement of this paper is: 1) the functional structure and typical business logic flow of IMS application server supporting multimedia video surveillance are studied and designed. A method of extending the session description protocol is proposed to support the media transmission interaction in multimedia service session negotiation. A design scheme of IMS application server based on B2BUA application server operation mode is proposed. The internal function module of IMS application server which supports multimedia video surveillance service is designed and implemented. (4) the media server distribution entity is designed. The dynamic weight adjustment strategy is used to adjust the load balance of the media server. The test results show that the functions and running effects of the IMS application server designed and implemented in this paper meet the requirements of the design. Can support the development of multimedia video surveillance business, and delivered to Liaoning Mobile Company for application demonstration.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN948.6

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