七号信令监测系统组网及应用

本文首先介绍七号信令网络的优点，然后提出七号信令网络的监测需要专用的七号信令监测系统。接着介绍了七号信令集中监测平台的总体结构，以及信令监测系统的组网方式及应用前景。     

软交换信令监测系统的研究

本文首先介绍了软交换网络信令系统及软交换网络信令监测系统的作用。然后详细介绍了软交换网络信令监测系统的体系架构。对软交换网络信令监测系统数据采集方式进行分析,最后对软交换网络信令监测系统与电路交换网络监测系统进行比较．分析软交换信令监测系统的不同之处,并对软交换信令监测系统实际部署的一些问题进行了探讨。     

重庆移动七号信令监测系统的组网及应用

文章给出了中国移动重庆分公司建设的七号信令监测系统的总体结构,分析了七号信令监测系统中的信令数据采集点、前端处理器、数据处理与应用、信令数据收敛等网络组成部分,并介绍了实时监测、网间互连、网络优化、用户行为分析等七号信令监测系统在移动通信中的应用.     

华为SMART承建江苏移动信令监测网

近日,江苏移动公司宣布采用华为公司信令监测系统SMART承建全省移动信令监测网络一期工程。华为SMART信令监测系统基于成熟的面向下一代通信网络的系统平台,可同时支持TDM和IP接入和监测,具有可靠性、处理能力、接入和处理容量等较大的优势。SMART具有灵活的多接入少监测的调度能力、高性能的服务器和海量数据库的处理能力;基于在信令和协议,以及宽窄带业务的长期积累,能够快速满足运营商对新协议和新业务的需求。SMART不仅能满足移动公司对TUP/ISUP、MAP、CAP、A接口和GPRS的监测需求,而且在互联互通、网络故障定位、网…     

移动通信网络信令监测系统及其扩展应用探讨

介绍了移动通信信令监测系统3层结构的设计思路,对信令监测系统的信令采集层、共享层和应用层的功能进行详细说明,给出了信令监测系统在移动通信网络中的常规应用和扩展应用.     

基于MAPsec的MAP信令安全机制研究

移动应用部分(MAP)协议是移动通信网络的信令协议,由缺乏安全保护的七号信令承裁.MAP安全(MAPsec)协议为传输MAP消息提供了安全保证.研究了MAPsec协议的网络模型、保护模式、消息结构及消息流程,对网络单元的安全策略数据库的参数设置提出了改进方案.     

信令监测系统硬件平台设计

信令监测系统在国内各运营商中已经普遍使用,但是随着网络规模的不断扩大,网络承载的业务不断丰富,原有的监测系统已经不能满足需求.总结了被测网络多协议、大流量、多接口、多业务等趋势特点,探讨了监测系统的硬件架构:强调了采集和业务分离,以及硬件采集平台的重要性,最后介绍了中兴通讯信令监测系统硬件平台的架构、性能和应用场合.     

CCG08至CCG03、CCG04局问切换问题分析

在处理全程全网问题时吉林移动大量应用中创信令监测系统,采取全部采集、轮询监测的方式对指定网元的IsuP信令、A接口信令、MAP及CAP等重点监测.2008年6月,维护人员在长春CCG08的MAP信令中发现操作码出现准备切换(44)的差错码为非期望的数据值(24),明显偏高,局向为到长春CCG03、CCG04方向,每小时在2 000次以上,占总切换量的0.4%.     

MAP信令的安全保护研究

移动应用部分(MAP)协议是移动通信网络的信令协议,MAP协议消息是由7号信令网承载,而7号信令网是缺乏安全保护的。为保护在7号信令网上运行的MAP协议,必须利用另外的安全协议。MAP安全(MAPsec)协议为传输MAP消息提供了安全保证。文章研究了MAPsec协议的网络模型、保护模式、消息结构及交互流程,并提出了MAP信令的安全保护方法。     

No.7信令监测系统的发展与应用

简要介绍No.7信令监测系统的技术现状、发展前景及应用情况,阐述了No.7信令监测系统在公众电话网（国际国内电话网／智能网等）的网络维护管理工可以发挥的强大功能和多种应用。     

NGN测试系统MAP监测模块的研究与实现

MAP监测模块是NGN网络测试仪表中针对移动网进行测试的部分。为了正确地将MAP协议运用于系统中,遵循基于ASN．1的MAP协议编码规范,采用面向对象的软件设计方法,开发出用于NGN网络测试仪的MAP监测模块。从用户需求出发,介绍了模块的设计和实现方法,并经过充分测试,效果良好,符合使用要求。     

Active overload prevention based adaptive MAP selection in HMIPv6 networks

Multi-level mobile anchor points (MAP) architecture is deployed in large-scale wireless/mobile networks using HMIPv6 to achieve better mobility service, while selecting the most suitable serving MAP for the mobile nodes (MNs) to enhance the whole network performance has been a critical issue. An adaptive MAP selection based on active overload prevention (MAP-AOP) hence is proposed. The MAP periodically evaluates the load status by using dynamic weighted load evaluation algorithm, and then sends the load information to the covered access routers (AR) by using the expanded routing advertisement message in a dynamic manner. Taking achieving the load balancing among the available MAPs, the current serving AR executes the active overload prevention to select MAP candidates for the MN pending a handover, and then adaptively selects an optimal one from the candidates by comprehensively considering the system cost and the average handover latency caused by each candidate. The simulation conducted on the NS-2 platform indicates that MAP-AOP outperforms the comparative MAP selection schemes with the optimized system cost and average handover latency, and better load balancing.     

关于MAP功能分析和实现技术的研究

本文结合移动通信业务的应用环境，给出ＭＡＰ功能分析方法，在此基础上提出了ＭＡＰ的实现技术和测试方法，并介绍了作者开发的ＭＡＰ软件。     

Study of Heuristic MAP Selection and Abstraction Schemes with Load Balance in HMIPv6

In order to improve the performance of real time services in the mobile environment, the hierarchical approach was proposed to reduce the frequency of handoffs in the mobile IPv6 environment. The mobility anchor point (MAP) is adopted in a hierarchical manner to handle the location management of the mobile node within the MAP domain. An enhanced speed estimation scheme is provided in this paper to select the appropriate MAP so that the overhead of handoff can be minimized. Furthermore, the concept of abstract MAP (AMAP) node is proposed to extend the coverage domain of MAP. In addition to selecting a MAP with respect to the speed estimation of the mobile node in a heuristic way, the criteria of load balance is also investigated in this study. The performance of the proposed scheme is examined through exhaustive simulations. And the simulation results show that the proposed scheme can effectively achieve the above objectives.     

一种用于MAP网络的新型宽带调制解调器

随着数据传输技术的发展和各种数据通信网络的广泛应用,对调制解调技术的研究也不断深入。本文介绍一种适用于MAP(制造自动化协议)网络的高性能宽带调制解调器。它采用AM/PSK技术,设计新颖、实现简单,既考虑符合有关国际标准,又考虑满足国内应用需要。该调制解调器具备宽带MAP网络物理层的全部功能,并且在单缆制宽带MAP网络中成功地进行了实验连网。     

MAPCON: an expert system for configuration of MAP networks

The MAPCON (MAP configuration) system is a knowledge-based tool used to configure MAP (manufacturing automation protocol) version 2.1 networks. Configuration management deals with determining the characteristics of the network and setting the parameters of the devices attached to the network in such a way as to make the network operational. MAPCON performs static configuration and can be used for reconfiguration purposes in an offline mode. MAPCON does not interface to the network and hence does not interact with the operational network. The parameters that are considered are the ones required for MAP 2.1 networks. The rules for identifying values of these parameters are developed and implemented. The MAPCON expert system was built entirely in Knowledge Craft, a language and development environment for building expert systems on the TI Explorer Lisp machine. Knowledge for the MAPCON expert system was obtained through interviews with MAP experts. This knowledge was then organized and implemented in Knowledge Craft. In addition, an elegant user interface was developed for the system     

The role of MAP in factory integration

The interplay of technology and market factors surrounding the manufacturing automation protocol (MAP) is examined. A four-tier hierarchical industrial communications model is presented and MAP is positioned within it. Several events and decisions during the evolution of MAP are identified as having had unusually far-reaching effects in terms of the way MAP is being used. It is asserted that MAP will play a key role in factory-wide networking, but nonstandard networks are still widely used where standards fail to address special requirements of performance or function. The effect that the development of real-time versions of MAP-like networks will have on factory communications is described. The central issue in such real-time networks is to provide both the responsiveness required by the application and the services required for wide connectivity among devices. The impetus to embrace MAP is yielding network designs different from ones based solely on technical considerations. Two case studies are presented to discuss the technical, administrative, and economic factors surrounding early MAP usage     

七号信令MAP消息及其在CDMA中的应用

介绍了在CDMA网络中MAP的应用范围和业务功能,详细讨论了MAP的层次结构、格式和具体内容,并通过CDMA网络中一条MAP消息实例加以说明.     

垂直分层空时码的MAP检测器及其神经网络实现

该文基于最大后验概率准则,给出了垂直分层空时码的最佳检测箅法。算法对接收到的符号矢量的符号分量进行逐个地判决以使误符号率最小。同时还详细说明了径向基函数神经网络可以完全等价于最大后验概率检测算法,由于神经网络的硬件可实现性,本文提出的算法是可能在实际中应用的。     

GSM网络演进的关键：MAP信令升级

移动运营商和设备制造商正努力把我国的GSM网络引入到Phase2 阶段,而MAP信令从Phase2到Phase2 的升级将在整个目标网升级工作中扮演重要角色,MAP升级后,使得SGSN/GCSN所需的宏移动功能得到支持,基于MAP Phase2 的GSM将全面支持CAMEL和GPRS,提供种类更多、功能更强的补充业务和网络持性。