软交换业务触发检测模块的设计与实现
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摘要
随着互联网技术、移动通信技术和多媒体技术的不断发展，随着通信领域全新的市场需求和运营模式的出现，下一代网络(Next Generation Network)作为未来通信网络的发展方向，成为电信界共同的研究热点。与传统的电信网以及语音业务相比，下一代网络期望实现现有多种异构业务网的融合，提供集数据、语音、视频和消息为一体的综合业务。软交换作为NGN的核心控制设备，具有很大的研究意义和广泛的应用前景。软交换必需提供多种网络协议的接入和开放的业务控制接口。其中软交换主动的向上层应用提供业务触发通知是软交换必须具备的一个能力，是实现业务的基础。本文主要研究支持多媒体业务的软交换系统的业务触发检测。
本文以具体的软交换系统项目为基础，首先对下一代网络的基本结构和软交换的系统结构进行了研究，在此基础上提出了业务触发检测在软交换系统中的需求。
接下来对传统智能网的业务触发检测模型进行了深入的研究，以此作为软交换系统业务触发检测模型的设计参考，提出了在软交换系统中抽象独立的检测点管理(Detection Point Management，DPM)模块，与软交换的其他功能模块配合实现业务触发的触发模型。
在此模型基础之上，从业务触发检测点的分类、检测点的属性、业务触发标准、业务触发流程、触发判断逻辑、与其他模块的消息接口等方面对DPM进行了设计，其中创新的提出了CDP的概念并创新的提出了改进的DP查询设计。
最后将这些设计方案在实际系统中进行了实现，并进行了相应的测试。测试结果表明，业务触发与检测的设计实现能满足常见的20几种业务的触发以及相应的检测点设置和检测要求。
The concept of NGN (Next Generation Network) has been introduced to take account the new situation in telecommunications, characterized by a lot of factors: open competition between operators due to the total deregulation of markets, explosion of digital traffic, e.g. due to the increasing use of Internet, increasing demand from users for new multimedia services, increasing demand from users for a general mobility, etc. Compared with the traditional telecommunication network and voice services, NGN is supposed to realize the convergence of nowadays multi network with the capability of providing multimedia services integrating data, voice, video and message. As the core control entity, Softswitch has good research value and market prospect. Softswitch must provide the multi-protocol access and open interface for services. And the capability of service trigger notification, which is the base of service, is a must of Softswitch. This paper focuses on the design and implementation of service trigger and detection point management in Softswitch.
In the first part, the paper introduces the basic concepts of NGN and Softswitch, including the architecture and service features. Based on this issues, the requirements of service trigger and detect of Softswitch is put forwarded.
In the second part, after thorough research and analysis of the traditional IN (Intelligent Network), a service trigger and detect model is introduced according to the basic structure of softswich. A module called DPM(Detection Point Management) is designed to fulfill the primary function of service trigger and detect cooperating with some other modules.
本文以具体的软交换系统项目为基础，首先对下一代网络的基本结构和软交换的系统结构进行了研究，在此基础上提出了业务触发检测在软交换系统中的需求。
接下来对传统智能网的业务触发检测模型进行了深入的研究，以此作为软交换系统业务触发检测模型的设计参考，提出了在软交换系统中抽象独立的检测点管理(Detection Point Management，DPM)模块，与软交换的其他功能模块配合实现业务触发的触发模型。
在此模型基础之上，从业务触发检测点的分类、检测点的属性、业务触发标准、业务触发流程、触发判断逻辑、与其他模块的消息接口等方面对DPM进行了设计，其中创新的提出了CDP的概念并创新的提出了改进的DP查询设计。
最后将这些设计方案在实际系统中进行了实现，并进行了相应的测试。测试结果表明，业务触发与检测的设计实现能满足常见的20几种业务的触发以及相应的检测点设置和检测要求。
The concept of NGN (Next Generation Network) has been introduced to take account the new situation in telecommunications, characterized by a lot of factors: open competition between operators due to the total deregulation of markets, explosion of digital traffic, e.g. due to the increasing use of Internet, increasing demand from users for new multimedia services, increasing demand from users for a general mobility, etc. Compared with the traditional telecommunication network and voice services, NGN is supposed to realize the convergence of nowadays multi network with the capability of providing multimedia services integrating data, voice, video and message. As the core control entity, Softswitch has good research value and market prospect. Softswitch must provide the multi-protocol access and open interface for services. And the capability of service trigger notification, which is the base of service, is a must of Softswitch. This paper focuses on the design and implementation of service trigger and detection point management in Softswitch.
In the first part, the paper introduces the basic concepts of NGN and Softswitch, including the architecture and service features. Based on this issues, the requirements of service trigger and detect of Softswitch is put forwarded.
In the second part, after thorough research and analysis of the traditional IN (Intelligent Network), a service trigger and detect model is introduced according to the basic structure of softswich. A module called DPM(Detection Point Management) is designed to fulfill the primary function of service trigger and detect cooperating with some other modules.
引文
[1] 龚双瑾，刘多，《下一代电信网的关键技术》，国防工业出版社，2003
[2] 任丽娜，《软交换信令控制功能的研究与实现》，硕士论文，北京邮电大学 2005
[3] 张雪丽，《软交换中的业务提供方式》，信息产业部通信标准研究所
[4] 赵慧玲，叶华，《以软交换为核心的下一代网络技术》，人民邮电出版社，2002
[5] ITU-T Q. 761(1999-12) Signalling System No. 7-ISDN User Part functional description
[6] IETF RFC 3261 (2002-06) Session initiation protocol(SIP)
[7] ITU-T Recommendation H. 323 v2(1998) Packet-Based Multimedia Communications Systems
[8] IETF RFC 3435 (2003-01) Media gateway Control Protocol(MGCP)
[9] ITU-T Recommendation H. 248.1 Version 2 (2002-05) gateway control protocol
[10] ITU-T Recommendation Q. 1551 Version 2 (1997-06) Application of Intelligent Network Application Protocols (INAP)
[11] ETSI GSM 09.02 version 4.19.1(2000-12) Mobile Application Part (MAP) specification
[12] 3GPP Technical Specification 25.413 v4.6.0 (2002-09) UTRAN Iu interface RANAP signalling(Release 4)
[13] 王柏，《智能网教程》，北京邮电大学出版社，2000
[14] 龚双瑾，《智能网技术》，人民邮电出版社，1999
[15] Draft ETSI ES 202 915-4-3 v0.0.3
[16] ITU-T IN CS-2建议Q．1224，国际电联，1997
[2] 任丽娜，《软交换信令控制功能的研究与实现》，硕士论文，北京邮电大学 2005
[3] 张雪丽，《软交换中的业务提供方式》，信息产业部通信标准研究所
[4] 赵慧玲，叶华，《以软交换为核心的下一代网络技术》，人民邮电出版社，2002
[5] ITU-T Q. 761(1999-12) Signalling System No. 7-ISDN User Part functional description
[6] IETF RFC 3261 (2002-06) Session initiation protocol(SIP)
[7] ITU-T Recommendation H. 323 v2(1998) Packet-Based Multimedia Communications Systems
[8] IETF RFC 3435 (2003-01) Media gateway Control Protocol(MGCP)
[9] ITU-T Recommendation H. 248.1 Version 2 (2002-05) gateway control protocol
[10] ITU-T Recommendation Q. 1551 Version 2 (1997-06) Application of Intelligent Network Application Protocols (INAP)
[11] ETSI GSM 09.02 version 4.19.1(2000-12) Mobile Application Part (MAP) specification
[12] 3GPP Technical Specification 25.413 v4.6.0 (2002-09) UTRAN Iu interface RANAP signalling(Release 4)
[13] 王柏，《智能网教程》，北京邮电大学出版社，2000
[14] 龚双瑾，《智能网技术》，人民邮电出版社，1999
[15] Draft ETSI ES 202 915-4-3 v0.0.3
[16] ITU-T IN CS-2建议Q．1224，国际电联，1997