Locating Global System for Mobile Communication(GSM)Base Stations Using Geographic Information System(GIS)

The global system for mobile communication(GSM)is planned to meet the needs of the whole subscribers.The number of subscribers increased as the population increased due to the acceptance of GSM services by the subscribers.Thus,there should be a way to monitor base stations that will meet the increasing demand of subscribers in any area as a population surge will lead to more subscriptions.This will allow GSM network operators to serve their subscribers better and ease network congestion.This work presents a review of mobile evolution from the first generation to the fifth generation.A review of global positioning system(GPS)technology and its applications to geographic information systems(GIS)was done.The coordinates of these base stations were taken using a GPS device.These base station coordinates were then exported to QGIS for the design of the map.Thereafter,the output map was then integrated into the website.The discussions on the results followed and some useful suggestions given will go a long way to help the operators of GSM in Nigeria and in general.If the propositions given are adhered to,it will go a long way to help the operators reduce congestion on their network and thereby increase the satisfaction of the subscribers.

Modeling the growth and policy implications of Global System for Mobile Telecommunication （GSM） in Nigeria

This paper investigated the growth and policy implications of Global System for Mobile Communication in Nigeria. Stochastic economic modeling was used to analyze Nigeria＇s time series data. The models were adjudged reliable before they were used. The components of the model were defined and a prior expectation of the relationship among the variables explained for the purpose of giving the reviewers and users a deep insight into the phenomenon under study. The secondary data used for the study were processed using the E-View for windows electronic packages. The outcome of the empirical and stochastic investigations shows that Global System for Mobile Communication has a positive relationship with output growth in Nigeria. The impact is of a higher magnitude. The usage of Global System for Mobile Telecommunication led to 17 percent rise in the output growth. The findings suggest the need for the Nigerian Communication Commission （NCC） and the federal government of Nigeria to expand tele-density and directly make telephone communications cheap and accessible. To achieve this goal, more licenses should be given to GSM operators in order to allow for healthy competition among them. This will lead to improved quality of services, quality of product and consequently sustain the growth and development of the country.

Analysis of Global System for Mobile Communication (GSM) Subscription Fraud Detection System

This work is concerned with GSM subscription fraud detection system using some network techniques. Fraud is a hitch around the globe with huge loss of income. Fraud has an effect on the credibility and performance of telecommunication companies. The most difficult problem that faces the industry is the fact that fraud is dynamic, which means that whenever fraudsters feel that they will be detected, they devise other ways to circumvent security measures. In such cases, the perpetrators’ intention is to completely avoid or at least reduce the charges for using the services. Subscription fraud is one of the major types of telecommunication fraud in which a customer obtains an account without intention to pay the bill. Thus at the level of a phone number, all transactions from the number will be fraudulent. In such cases abnormal usage occurs throughout the active period of the account;which is usually used for call selling or intensive self usage. This provides a means for illegal high profit business for fraudsters requiring minimal investment and relatively low risk of getting caught. A system to prevent subscription fraud in GSM telecommunications with high impact on long distance carriers is proposed to detect fraud. The system employs adaptive flexible techniques using advanced data analysis like Artificial Neural Networks (ANN). This study aims at developing a fraud detection model occurrence in GSM Network. The paper also gives analysis of the fraud detection Systems, fraud detection and prevention, fraud prevention methods etc. Fraud affects us all and is of particular concern to those who manage large government and business organisations where the potential losses are greatest. The operation of a mobile network is complex, and fraudsters invest a lot of energy to find and exploit every weakness of the system. A typical example would be subscription fraud, where a fraudster acquires a subscription to the mobile network under a false identity;and start reselling the use of his phone to unscrupulous customers (typically for international calls to distant foreign countries) at rate less than the regular tariff.

基于GSM-R的高铁无线通信系统性能分析与优化

目前,国内高速铁路使用基于全球铁路移动通信系统(Global System for Mobile Communications-Railway,GSM-R)的双向无线通信系统,实现列车与地面之间的安全信息传输。然而,无线通信存在传输延迟和丢包,严重时会影响运行效率,因此需要研究GSM-R系统服务质量(Quality of Service,QoS)参数,以满足实时性和可用性需求。选取传输延时作为待优化的GSM-R无线通信系统QoS参数,定量分析端到端传输延迟时间,提出基于无线传输参数自适应的加强学习优化方案。仿真结果表明,该方法可以显著提升无线通信系统性能。

基于GSM模块的电子信息自动化处理系统设计

在对全球移动通信系统(Global System for Mobile Communications,GSM)的应用特点及技术原理进行简要探讨的基础上,围绕总体设计、单元设计和软硬件设计3个方面,研究基于GSM模块的电子信息自动化处理系统的设计策略,并对系统功能的应用进行分析,指出系统运行的要点。

A Remote Temperature Monitoring System Based on GSM

This paper has discussed the home and abroad’s current situation of temperature monitoring system and compared the advantages and disadvantages of several common methods.According to cold storage,container, medicines library and greenhouse’s requirements on temperature,this thesis has analyzed the advantages and significance of the system and elaborated each module’s function and implementation based on hardware and software’s introduction and demonstrated the pictures of its practical application and the alarm information saved in the SD card which extracted from the database.

Design and Implementation of Remotely Controlled Vehicle Anti-Theft System via GSM Network

The purpose of this paper is to build a secured and reliable vehicle anti-theft system which will have the ability to access the vehicle subsystems from a remote location where there is GSM network. And also, the design method involves the interfacing of GSM/GPRS modem module with the vehicle ignition subsystem, and the test result shows that it performs some control actions on the vehicle subsystems from a mobile phone, having taken the advantage of the wide coverage area of some GSM networks. Hence the topic is “Remotely Controlled Vehicle Anti-theft System via GSM Network”.

Study on Unequal Error Protection for Distributed Speech Recognition System

The unequal error protection （UEP） is applied in distributed speech recognition （DSR） system and three schemes are proposed. All of these three schemes are evaluated on the GSM simulating platform for recognizing mandarin digit strings and compared with the equal error protection （EEP） scheme. Experiments show that UEP can protect the data transmitted in DSR system more effectively, which results in a higher word accurate rate of DSR system.

Wireless sensing system for environmental humidity and temperature monitoring

Aiming at the actual demand for monitoring environmental information,a wireless sensing system for temperature and relative humidity(RH)monitoring based on radio frequency(RF)technology and mobile network was designed.This paper introduces the architecture of the system.The system uses AVR micro controller unit(MCU),KYL-1020U RF module and SHT71 to complete real-time temperature and humidity monitoring,and uses SIM900A module to realize remote alarming and monitoring with short message system(SMS)through global system for mobile communication(GSM).Experimental results show that the designed system has good stability of measurement and real-time performance,and it can be used in some small temperature and humidity monitoring occasions.

Global Mobile Market Situations and China Telecom's Strategy to Enter Mobile Market

The article briefly introduces the situation of the global mobile communications market,and based on the development status quo of China's mobile communications market,studies the strategy for China Telecom to enter the mobile market,mainly focusing on mo- bile technologies selection,differentiable services,regional strate- gies and price policies.

基于GSM-R的通知外勤方案研究

调研分析车站值班员与外勤值班员的作业内容和联络方式,结合行车设备现状,研究设计一种基于GSM-R的通知外勤方案。借鉴调度指挥系统无线进路预告应用技术的设计思路,提出自动通知外勤的理念,研究自动通知外勤的时机与条件。为外勤值班员设置具备人机交互的便携式无线手持终端,利用既有的GSM-R无线通信通道交互信息,解决目前通知外勤功能实施难度大、应用效果差的问题,再次提升车务人员接发车作业的管理技术与自动化水平。

基于GSM网络的磁共振二级冷却水温度监测报警系统设计与应用研究

基于全球移动通信系统(GSM)网络,设计磁共振二级冷却水温度监测报警系统,通过24 h实时监测磁共振二级冷却水温度及储量,实现设备突发故障报警。系统硬件由温度传感器DS18B20、无线通信模块TC35、STC89C52高性能CMOS8位单片机组成。当温度探头监测到水温超标时,由单片机控制无线通信模块向预设手机发出报警短信,该系统在有效性实验中成功实现冷却水温度及储量报警功能。实际投入使用后,成功识别设备故障状态,有效保证了设备的正常运行。

GSM-R在铁路通信中的应用

铁路在陆地运输系统中占有举足轻重的位置,我国的铁路网从原来的“追随”阶段走向“领跑”阶段。铁路系统全面更新,包括铁路基础设施、通信系统以及电力系统等。铁路通信设计的综合专用数字移动通信(Global System for Mobile Communications–Railway,GSM-R)技术是一种新型的列车通信技术,它既可以提高铁路的通信品质,又可以为列车提供可靠的数据传输服务。通过对GSM-R技术特性的剖析,对该技术在铁路交通中的运用进行了详细的分析和论述。

基于GPS与GSM的交通事故自动呼救系统的设计

结合GPS的定位功能和GSM的远程无线通讯功能,提出一种以提高交通安全、减少人员伤亡为目的的车辆交通事故自动呼救系统的构建方案,该系统会伴随安全气囊的启动而启动,也可手动启动。车载模块将安全气囊点火信号送入微处理器,通过串行接口驱动无线数据传输模块,经GSM网络将GPS的定位信息发送到监控中心,并可建立车载模块与监控中心之间的语音通讯,给出车载模块硬件电路实现、软件设计以及控制中心的设计方案,并对系统的关键技术进行了说明。

基于GIS/GPS/GSM/GPRS技术的车辆监控系统的设计与实现

目的基于现代化信息技术监控、调度车辆,实现对车辆的动态管理.防止和减少交通事故,提高交通运输管理能力。方法通过集成使用GIS(geographic information system,地理信息系统)、GPS(global positioning system,全球定位系统)、GSM(global system for mobile communications,全球移动通信系统)、GPRS(general packet radio service,通用无线分组业务)、中间件等技术,并按图属一体化、多尺度数据无缝集成的建库思想,完成了系统设计的数据建库、无线网络设置、道路匹配和信息显示等关键技术问题。结果实现了对多种车辆目标的实时跟踪和动态管理。结论综合使用GIS,GPS,GSM/GPRS等信息技术,建立车辆动态监控系统,是现代交通运输发展的必然趋势。

基于GSM的数据采集信息系统

基于GSM的数据采集系统在分布范围非常广的区域内的数据采集与监测领域,有着广阔的应用前景。详细介绍了基于GSM的数据采集信息系统的结构、各部分功能及软硬件。

GSM-R网络切换掉话的分析与处理

为解决石太客运专线GSM-R网络的切换掉话的问题.利用话务统计分析、路测与动态测试等网络优化方法,对网络所用切换算法和光纤直放站对基站接收性能的影响进行了理论研究.分析结果确定,切换掉话原因为网络场强覆盖不合理和光纤直放站的上行增益过高造成的.本文采用调整相邻小区天线俯仰角和下调直放站上行增益的方法,实现了两个小区之间的正常切换,解决了该切换掉话的问题.

基于GSM技术的无线数据传输模块设计

为实现对控制设备的远程监控,方便管理人员对控制设备的远程控制和及时了解故障信息,设计了一款基于GSM技术的短信息无线数据传输模块。模块以华为的GSM模块GTM900C和高性能MCS-51单片机为核心,通过电平转换电路使两者电平相互匹配,稳定的进行数据通信。文章介绍了无线数据传输模块的硬件结构以及硬件电路设计,给出了短信息的编码和解码内容。所设计的模块抗干扰性能强,运行平稳,成功应用在太阳能集热工程项目中。

GPS/GIS/GSM车辆动态监控调度系统的设计与开发

在对GPS、GIS与GSM的最新发展进行深入介绍的基础上 ,论述基于GPS/GIS/GSM开发车辆动态监控调度系统的关键技术 ,包括系统设计、基于VB6 0和GIS控件MapX的系统功能开发、GPS定位数据的处理、用于车辆监控调度的交通电子地图的制作、双向通信功能的实现等 ,最后给出实现系统主要功能的VB6 0编程方法。

基于GSM短信息的远程水情数据采集控制系统

介绍了基于GSM短信息的远程水情数据采集控制系统的系统组成及工作流程，然后详细介绍了水情数据采集控制软件的工作原理及功能。