学校编码 :10384 分类号密级学号 : UDC 硕士学位论文基于通用 CPU 的 GPRS 核心网的设计与实现 The Design and Implementation of GPRS System Core Network based on the Generi

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1 学校编码 :10384 分类号密级学号 : UDC 硕士学位论文基于通用 CPU 的 GPRS 核心网的设计与实现 The Design and Implementation of GPRS System Core Network based on the Generic CPU 刘敬盼指导教师姓名 : 黄联芬副教授专业名称 : 计算机应用技术论文提交日期 :2012 年 5 月论文答辩时间 :2012 年 5 月学位授予日期 :2012 年月答辩委员会主席 : 评阅人 : 2012 年 5 月

2 厦门大学学位论文原创性声明本人呈交的学位论文是本人在导师指导下, 独立完成的研究成果本人在论文写作中参考其他个人或集体已经发表的研究成果, 均在文中以适当方式明确标明, 并符合法律规范和厦门大学研究生学术活动规范 ( 试行 ) 另外, 该学位论文为 ( ) 课题 ( 组 ) 的研究成果, 获得 ( ) 课题 ( 组 ) 经费或实验室的资助, 在 ( ) 实验室完成 ( 请在以上括号内填写课题或课题组负责人或实验室名称, 未有此项声明内容的, 可以不作特别声明 ) 声明人 ( 签名 ): 年月日

3 厦门大学学位论文著作权使用声明本人同意厦门大学根据中华人民共和国学位条例暂行实施办法等规定保留和使用此学位论文, 并向主管部门或其指定机构送交学位论文 ( 包括纸质版和电子版 ), 允许学位论文进入厦门大学图书馆及其数据库被查阅借阅本人同意厦门大学将学位论文加入全国博士硕士学位论文共建单位数据库进行检索, 将学位论文的标题和摘要汇编出版, 采用影印缩印或者其它方式合理复制学位论文本学位论文属于 : ()1. 经厦门大学保密委员会审查核定的保密学位论文, 于年月日解密, 解密后适用上述授权 ()2. 不保密, 适用上述授权 ( 请在以上相应括号内打或填上相应内容保密学位论文应是已经厦门大学保密委员会审定过的学位论文, 未经厦门大学保密委员会审定的学位论文均为公开学位论文此声明栏不填写的, 默认为公开学位论文, 均适用上述授权 ) 声明人 ( 签名 ): 年月

5 摘要摘要近年来, 各专业领域用户对于行业集群通信的需求日益增多, 集群通信方便快捷和信道资源共享等特点使其迅速发展数字集群通信具备兼容性开放性保密性强频谱利用率高等特点成为集群通信的发展趋势和研究热点, 但其投资成本高因此研究具有低成本便携性和实用性的集群通信系统具有非常重要的意义本文在学习 GPRS 系统原理体系结构和 GPRS 核心网业务的信令流程基础上, 深入研究了 GPRS 系统的网络结构网络接口和 GPRS 网络单元和接口, 包括网络单元有分组控制单元 PCU(Packet Control Unit) GPRS 服务支持节点 SGSN(Serving GPRS Support Node) 和网关 GPRS 支持节点 GGSN(Gateway GPRS Support Node) 进行 GPRS 系统整体设计遵循 3GPP 标准, 首先对 GPRS 系统整体框架和系统模块单元架构进行了设计, 并在通用 CPU 上集成设计实现了 GPRS 基站系统, 主要包含 PCU SGSN GGSN 三个核心模块 GPRS 移动性和会话管理功能的信令流程和网络整体配置, 该系统具有通用性和高效性等特点, 可大大节省系统的硬件资源, 降低系统能耗由于 GTP 协议不支持 SGSN 与 GGSN 在同一 PC 机上运行 GTP 实体, 本文对 GTP 协议中用户面与数据面的通信端口重新进行设计和实现, 提高了系统的可移植性在 GGSN 网关实现中, 增加了 IP 回收机制, 通过使用 IP 回收池提高了 IP 资源可利用性最后搭建了基于通用 CPU 的 GPRS 测试实验平台, 对 GPRS 系统进行了模块测试和集成测试, 检测每个模块和重要信令流程的正确性和鲁棒性测试结果表明移动终端可通过 GPRS 与 Internet 进行通信, 并通过多次重复性测试验证了系统的稳定性今后可着重开发 GPRS 系统中的 IP 业务, 使其可以支持多领域的业务, 在集群通信中有更好的应用和发展前景关键词 : 专网通信 ;GPRS 系统 ;3GPP;PCU;SGSN;GGSN I

6 摘要 II

7 Abstract Abstract In recent years, with the development of Information Technology, the coverage of Public Land Mobile Network (PLMN) becomes gradually enlarge, and the business of PLMN has also been developed and perfected. However, the various requirement of trunking communication used in the private domains is increasing, and this requirement is not fulfilled by PLMN. Especially in an earthquake or other public emergencies, if the Public Land Mobile Network interrupts, it can cause serious damage by the communication interrupt. Therefore, the research about Private Mobile Radio System with portability and practicality has the very vital significance. In my paper, the GPRS system used in base station is designed and implemented according to the 3GPP specifications through studying and mastering the architecture of GPRS system and the important signaling procedures. There are three modules such as PCU, SGSN and GGSN included in GRPS system. The detail of overall system design and the modules design are respectively introduced in the paper. The GPRS system is developed based on the GSM system which is designed and implemented by our laboratory. The GSM system supports not only the basic communication function but also the trunking communication function. PCU, SGSN and GGSN run in one generic CPU which has general and high efficiency. Therefore, this method can reduce the resources of system hardware and energy consumption. The author analyzes the GTP protocol, then designs and implements the communication port of the data plan and the control plan in the GTP protocol again. This method can improve the system of portability. Furthermore, in order to save IP resources, the IP recycle pool is to be added in the GGSN functions. The experimental platform is builded after the achievement of the GPRS system. The module testing and integration testing of the GRPS system are used III

8 Abstract to test the correctness and robustness of the modules and some important signaling procedures. The test results show that the mobile station could surfer on the Internet fluently through the GPRS system and the GPRS system has the stability, pertinence and advantage. Key words :PMRS; GPRS System; 3GPP; PCU; SGSN; GGSN IV

9 目录目录第一章绪论课题研究背景及意义专网的特点和发展现状 GPRS 应用在专用通信网领域的优势本文的主要内容... 5 第二章 GPRS 的系统简介 GSM 系统介绍 GSM 原理 GSM 的体系结构 GPRS 体系结构 GRPS 网络结构 GPRS 网络接口基于通用 CPU 的 GPRS 系统平台简介本章小结第三章 GPRS 系统整体设计 GPPS 系统架构设计 GSM 系统的整体架构 GPRS 系统与 GSM 比较 GPRS 分层结构 GPRS 的信令流程移动性管理规程会话管理规程 GPRS 的网络连接配置本章小结第四章 GPRS 模块设计与实现 V

10 目录 4.1 PCU 的设计与实现模块的标准架构协议规程接口设计与实现 SGSN 的设计与实现模块的标准架构协议规程 SGSN 的实现 GGSN 网关功能设计 GTP 规程 NAT 技术 GGSN 功能实现网元的网络连接设置本章小结第五章 GPRS 系统测试测试环境的搭建 GPRS 系统模块测试 PCU 测试 SGSN 测试 GGSN 测试 GPRS 系统集成测试 GPRS 附着规程 PDP 上下文激活 / 去激活流程 GPRS 路由更新流程本章小结第六章总结与展望总结展望 VI

11 目录参考文献攻读硕士学位期间发表论文攻读硕士学位期间参与的科研项目致谢 VII

12 目录 VIII

13 Table of Contents Table of Contents Chapter 1 Introduction Research Background and Significance Characteristics of Private Mobile Radio System The Advantage of GPRS Applied in PMRS Main Content of this Article... 5 Chapter 2 Introduction of GPRS System GSM System Introduction Principle of GSM system Architecture of GSM system Architecture of GPRS System Network architecture of GRPS system Network interfaces of GRPS system Platform Introduction of GPRS system Summary Chapter 3 Overall system design of GPRS Architecture Design Architecture of GSM System The comparison of GPRS and GSM The hierarchical structure of GPRS System Signaling Procedures of GPRS System Mobility management procedures Session management procedures Network Connection Configuration of GPRS Summary Chapter 4 Design and Implementation of GPRS Modules Design and Implementation of PCU IX

14 Table of Contents The standard module structure Protocol according to PCU Design and implementation of interface Design and Implementation of PCU of SGSN Design and Implementation of SGSN Protocol according to SGSN Implementation of SGSN Design of GGSN Gateway GTP procedure NAT technology Implementation of GGSN Configuration of all the Modules Summary Chapter 5 GPRS System Testing The Construction of the Test Environment Moudle Testing of GPRS System PCU Testing SGSN Testing GGSN Testing The Integration Testing of GPRS System GPRS attach procedure PDP context active/deactive procedure GPRS RA updata procedure Summary Chapter 6Conclusion and Outlook Conclusion Outlook Reference X

15 Table of Contents Papers published Projects participated Acknowledgements XI

16 Table of Contents XII

17 Degree papers are in the Xiamen University Electronic Theses and Dissertations Database. Full texts are available in the following ways: 1. If your library is a CALIS member libraries, please log on and submit requests online, or consult the interlibrary loan department in your library. 2. For users of non-calis member libraries, please mail to etd@xmu.edu.cn for delivery details.

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学校编码 :10384 分类号密级学号 : UDC 硕士学位论文 基于通用 CPU 的 GPRS 核心网的设计与实现 The Design and Implementation of GPRS System Core Network based on the Generi

学校编码 :10384 分类号密级学号 : UDC 硕士学位论文基于通用 CPU 的 GPRS 核心网的设计与实现 The Design and Implementation of GPRS System Core Network based on the Generi