Gsm Technology

11721 Words Aug 31st, 2010 47 Pages
GSM – Overview

GSM is a globally accepted standard for digital cellular communications.

What is GSM?

If you are in Europe, Asia or Japan and using a mobile phone then most probably you must be using GSM technology in your mobile phone.
GSM stands for Global System for Mobile Communication and is an open, digital cellular technology used for transmitting mobile voice and data services.
The GSM emerged from the idea of cell-based mobile radio systems at Bell Laboratories in the early 1970s.
The GSM is the name of a standardization group established in 1982 to create a common European mobile telephone standard.
The GSM standard is the most widely accepted standard and is implemented globally.
The GSM is a circuit-switched system that
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|1994 |Data transmission capabilities launched. The number of networks rises to 69 in 43 countries by the end of 1994. |
|1995 |Phase 2 of the GSM specifications occurs. Coverage is extended to rural areas. |
|1996 |June: 133 network in 81 countries operational. |
|1997 |July: 200 network in 109 countries operational, around 44 million subscribers worldwide. |
|1999 |Wireless Application Protocol came into existence and 130 countries operational with 260 million subscribers |
|2000 |General Packet Radio Service(GPRS) came into existence. |
|2001 |As of May 2001, over 550 million people were subscribers to mobile telecommunications |

GSM - Architecture

A GSM network consists of several functional entities whose functions and interfaces are defined. The GSM network can be divided into following broad parts. • The Mobile Station(MS) • The Base Station Subsystem (BSS) • The Network Switching Subsystem (NSS) • The Operation Support Subsystem(OSS)
Following is the simple architecture diagram of GSM Network.
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The added components of the GSM architecture include the functions of the databases and messaging systems: ▪ Home Location Register
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