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Global System for Mobile communications (GSM) telephony has great impact in cellular communication technology because of its ability to accomodate more subscribers than the analog telephone. As a result, many calls are now on the network to seize the scarce radio resources available in GSM spectrum thereby leading to congestion most of the time. This work focuses on how the congestion experienced...
This innovative project aims to monitor water quality in the area of continental, the coast and the lake using mobile buoy remotely controlled by a computer which sends a series of commands to Intel Atom N2600 Board and microcontrollers over Global System for Mobile Communication (GSM). The user enters the desired coordinate to Graphical User Interface (GUI) monitoring software from a remote computer...
In this paper, we have proposed a cost effective method for rapid restoration of wireless connectivity in disaster hit areas, which face large scale failure of wireless infrastructure. This method includes setting of a reconfigurable Base Transceiver Station (BTS) based on Software Defined Radio (SDR) technology. The setup covers the drawbacks of existing methods for establishing connectivity in disaster...
GSM Networks were initially designed for communication purpose and security aspect was not covered in the system, but now different systems are using diverse encryption techniques to protect the SMS text from unwanted receivers. Most of work has been done in GSM to secure message from person who can eavesdrop the GSM Channel, from the hacker who can perform replay attacked using his historical messages...
Wearing a wet diaper for prolonged periods, cause diaper rash. This paper presents an automated alarm system for Diaper wet. The design system using an advanced RF transceiver and GSM system to sound an alarm on the detection of moisture in the diaper to alert the intended person to change the diaper. A wet diaper detector comprises an elongated pair of spaced fine conductors which form the wet sensor...
Bleeding is blood escaping from the circulatory system. The complete loss of blood causes death. Stopping bleeding is an important part of both first aid and surgery. This paper presents an automated bleeding detector and alarm system using an advanced RF transceiver and GSM system to sound an alarm on the detection of moisture in the medical gauze. The bleeding sensor detector consists of an elongated...
In an Emergency and/or Crisis Situations (ECS) like earthquakes, floods, tsunamis, fires, terrorist attacks etc. the adequate operation of communication services is of extreme importance. History has shown that poor communication in such cases resulted in several casualties. In ECS fixed communication infrastructure might be unserviceable due to sustained damages. Evermore, the communication demand...
Mobile infrastructure and in particular radio access network (RAN) sharing is becoming an important topic that mobile network operators are evaluating and considering in their expansion plans and investments decision. The arguments for network sharing are well known. It can substantially reduce CAPEX and OPEX, potentially increase the speed of network rollouts, improve coverage and help meet the capacity...
A compact multiband internal antenna that is composed of a coupled structure with an inverted-L patch and two step-shape forky strips is designed. The antenna has two operating bandwidths 698~1100 MHz and 1570~2910 MHz to cover LTE/GSM/UMTS. Therefore, the proposed antenna can support current all 2G/3G/4G wireless communication network services. The limited volume of the antenna is only 40 × 12.5...
With the unrelenting demand for high bandwidth and high spectrum efficiency, intercell interference (ICI) becomes more and more serious and ICI management plays an increasingly important role in mobile cellular networks. This paper overviews the main ICI management schemes employed in the 2nd generation (2G) to the fourth generation (4G) mobile communication systems, such as the basic frequency reuse-n...
The basic functionalities of mobile network (voice service and mobility) do not satisfy all user requirements in the network. Thus the evolution of GSM was inevitable, as well as the emergence of user-oriented services. In this paper, implementation of a web service using USRP hardware device combined with OpenBTS software is described and analyzed.
One of the main challenges for the future of information and telecommunication technologies is to reduce energy consumption in telecommunication networks. The largest consumers in telecom operators are access nodes on the customer premises for the fixed access network and base stations for wireless access network. In the last decade, special attention is paid to solutions that have a greater impact...
One of the weaknesses of a GSM network is a lack of two-way authentication. For years, this weakness has been abused using IMSI catcher. However, due to high prices there were no major opportunities for detailed IMSI catcher analysis and for a practical implementation of the IMSI catcher with lower costs and greater availability. Development of a software defined radio has enabled a cheaper implementation...
Patents conforming to technology standards ("essential patents") in a rapidly-changing and technology-intensive industry such as mobile telecommunication industry have strategic values to the holder of the patent. Firms who play in such an industry, either manufacturers, parts suppliers, or non-practicing entities, thus fiercely compete against each other to develop standards-conformant...
Time-correlation of GSM telephone traffic is important for wireless network performance, but lack of in-depth investigation, especially in large-scale networks. In this paper, we investigate this topic using the data of call detail records (CDR) collected in June 2013 from thousands of GSM base stations. Based on results obtained by the Modified Allan Variance (MAVAR), we confirm the long-range dependency...
The software of global system for mobile channel is designed. The use of global system for mobile channel will permit to improve the accuracy of unmanned aerial vehicle location coordinates.
The development of a positioning algorithm on the board of a moving object using the information about the direction of signal reception from global system for mobile base stations. The developed system may be used as the effective and reliable method of positioning. Mobile module can help to solve all the types of positioning problems.
When disasters occurs, cellular network might be down and cannot serve subscribers anymore. On the other hand, many victims trapped in a wreckage might still have access to their mobile phone. An OpenBTS-based cellular network has been long before known as an ideal solution to rapidly deploy emergency GSM cellular network in situation after disaster. We propose to deploy a mobile OpenBTS along with...
When disasters occurs, cellular network might be down and cannot serve subscribers anymore. On the other hand, many victims trapped in a wreckage might still have access to their mobile phone. An OpenBTS-based cellular network has been long before known as an ideal solution to rapidly deploy emergency GSM cellular network in situation after disaster. The problem arise when victims' mobile phone only...
Understanding the characteristics of spectrum utilization is essential in providing guidelines for resource allocation. In this paper, a detailed measurement analysis of spectrum efficiency is performed, with data collected from tens of thousands of base stations during fifteen months. We examine the characteristics of radio resource margins (RM) extensively, including its temporal skewness, diurnal...
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