四川师范大学成都学院本科毕业设计
基于IMS的交换网络融合分析研究
学生姓名 学 号 所 在 系 专业名称 班 级 指导教师
吴修利 2009101096 通信工程系 通信工程 2009级1班
倪磊
四川师范大学成都学院
二○一三年五月
四川师范大学成都学院本科毕业设计
基于IMS的交换网络融合分析研究
学生：吴修利 指导教师： 倪磊
内容摘要：随着通信技术的发展，融合是通信界网络发展的必然走向，其覆盖范围非
常广，包括运营商、用户、网络技术、设备与解决方案等各个方面。从用户角度，通过无线有线的接入方式和简单易行的通信方式可以享受个性化服务；从运营商角度，融合可以向用户提供全面的业务服务，并能提高在市场所占有的利润和份额。鉴于IMS（IP多媒体子系统）具有采用SIP协议进行与接入无关、呼叫控制和能够灵活提供多种业务的特点，本文在IMS体系结构的基础上，提出网络融合的参考架构，并对IMS实现固定和移动网络融合的可行性进行详细分析，分析结果表明固网PSTN和移动网络在IMS在能实现互通。
关键词：IMS 交换网络 网络融合
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四川师范大学成都学院本科毕业设计
Analysis of Fusion Swiched Network Based on IMS
Abstract: With the development of communication technology, integration is an
inevitable trend of the future development of the network. Its coverage is very wide, including all aspects of the network technology, users, operators, equipment and solutions. To the user's point of view,they can enjoy personalized service from communication mode which uses the simple way.To the operator’s point of view, integration can provide users with full-service operation.It also can offer them increasing market share and profits. Because IMS (IP Multimedia Subsystem) has the characters which include SIP protocol for call control, having nothing to do with the access and the flexibility to offer a variety of business. This article is based on IMS architecture and analysis the fusion whether it is feasible. We obtained a results that the fixed-line PSTN and mobile networks to achieve interoperability in IMS.
Keywords:IMS Switched Network Fusion
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四川师范大学成都学院本科毕业设计
目 录
前言 ............................................................................................................................................ 1 1 移动交换网络架构 .............................................................................................................. 2
1.1 移动台子系统（MS） ................................................................................................. 3
1.1.1 移动终端(MT) .................................................................................................. 3 1.1.2 用户识别卡（SIM） ........................................................................................ 3 1.2 基站子系统（BSS） ................................................................................................... 3
1.2.1 基站收发台（BTS，Base Transceiver Station） .................................... 3 1.2.2 基站控制器（BSC，Base Station Controller） ...................................... 3 1.3 网络子系统（NSS） ................................................................................................... 4
1.3.1移动交换中心（MSC） ..................................................................................... 4 1.3.2拜访位置寄存器（VLR） ................................................................................. 4 1.3.3归属地位置寄存器（HLR） ............................................................................. 4 1.3.4鉴权中心（AUC） ............................................................................................. 4 1.3.5设备识别寄存器（EIR） ................................................................................. 5
2 IMS ........................................................................................................................................ 5
2.1 IMS的定义 .................................................................................................................. 5 2.2 IMS的网络架构 .......................................................................................................... 5
2.2.1 业务应用层 ...................................................................................................... 6 2.2.2 控制层 ............................................................................................................ 7 2.2.3 传送层 .............................................................................................................. 8 2.3 IMS的优点 .................................................................................................................. 8 3 基于IMS的固定与移动网络融合方案 ............................................................................. 8
3.1 网络融合的需求分析 ................................................................................................. 8 3.2 基于IMS的下一代融合网络架构 ............................................................................. 9
3.2.1 接入层 ............................................................................................................ 10 3.2.2 传输层 ............................................................................................................ 10 3.2.3 会话控制层 .................................................................................................... 10 3.2.4 应用层 ............................................................................................................ 11 3.3 融合分析 ................................................................................................................... 12
3.3.1 融合的方案分析 ............................................................................................ 12
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四川师范大学成都学院本科毕业设计
3.3.3 融合的接入安全分析 .................................................................................... 15
4 结束语 ................................................................................................................................ 17 参考文献: ................................................................................................................................ 19
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