Looking for books on GSM? Check our section of free e-books and guides on GSM now! Overview Of The GSM System and Protocol Architecture (PDF). Global system for mobile communication (GSM) is a globally accepted standard This tutorial provides an introduction to basic GSM concepts, specifications. About This Book. 1. Global System for Mobile Communication (GSM) 2. The System Architecture of GSM: A Network of Cells. 3. An Overview.
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GSM-Cellular Networks PDF-Book - Free ebook download as PDF File .pdf), Text File .txt) or read book online for free. this book may be reproduced or utilized in any form or by any means, electronic or GSM and PCS in the United States: an overview. View Table of Contents for GSM Architecture, Protocols and Services About this book PDF · Request permissions · xml.
Providing an overview of the innovations that have fuelled this phenomena, GSM: Architecture, Protocols and Services, Third Edition offers a clear introduction to the field of cellular systems.
Special emphasis is placed on system architecture and protocol aspects, and topics range from addressing concepts through mobility management to network management. This edition: Free Access. Summary PDF Request permissions. PDF Request permissions. Appendices Free Access.
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Forgot your username? Enter your email address below and we will send you your username. In addition, if the handset is also equipped with GPS then significantly more precise location information can be then sent from the handset to the carrier.
Another approach is to use a fingerprinting-based technique,    where the "signature" of the home and neighboring cells signal strengths at different points in the area of interest is recorded by war-driving and matched in real-time to determine the handset location.
This is usually performed independent from the carrier.
The key disadvantage of handset-based techniques, from service provider's point of view, is the necessity of installing software on the handset. It requires the active cooperation of the mobile subscriber as well as software that must be able to handle the different operating systems of the handsets. Google Maps. One proposed work-around is the installation of embedded hardware or software on the handset by the manufacturers, e. This avenue has not made significant headway, due to the difficulty of convincing different manufacturers to cooperate on a common mechanism and to address the cost issue.
Another difficulty would be to address the issue of foreign handsets that are roaming in the network. The type of information obtained via the SIM can differ from that which is available from the handset.
For example, it may not be possible to obtain any raw measurements from the handset directly, yet still obtain measurements via the SIM. Wi-Fi[ edit ] Crowdsourced Wi-Fi data can also be used to identify a handset's location. Hybrid[ edit ] Hybrid positioning systems use a combination of network-based and handset-based technologies for location determination.
Both types of data are thus used by the telephone to make the location more accurate i. Alternatively tracking with both systems can also occur by having the phone attain its GPS-location directly from the satellites , and then having the information sent via the network to the person that is trying to locate the telephone.
Operational purpose[ edit ] In order to route calls to a phone, the cell towers listen for a signal sent from the phone and negotiate which tower is best able to communicate with the phone. As the phone changes location, the antenna towers monitor the signal, and the phone is "roamed" to an adjacent tower as appropriate.