Mobile Computing - Global System for Mobile Communications
Mobile Computing – Global System for Mobile Communications
Prof. Rajesh M. More*, Lecturer, GSMCOE, MCA, Pune-45
(Abstract - Global System for Mobile Communications (GSM) is a digital mobile telephone system which is widely used in Europe and other part of the world. In 1982 it was recognized as a standard for digital wireless communications adopted firstly by Europe and then by Asia, Africa etc.
INTRODUCTION
To develop a standard for mobile telephone the European Conference of Postal and Telecommunication Administrations (CEPT) created the Groupe Spécial Mobile (GSM) which was used across Europe. The GSM standard has been an advantage to both consumers and network operator. Consumer can get benefit from the ability to roam and switch carriers without switching phones whereas Network Operators can choose equipment from any of the many vendors implementing GSM. GSM also pioneered a low-cost (for network carrier) alternative to voice calls. The Short Message Service (SMS), also called "text messaging", which is now also supported on other mobile standards were backward-compatible with the original GSM phones. For example, Release ‘97 of the standard added packet data capabilities, by means of General Packet Radio Service (GPRS). Release '99 introduced higher speed data transmission using Enhance Data Rates for GSM Evolution (EDGE).
GSM ARCHITECTURE
GSM is a cellular network where each cell is connected or served by Base Transceiver Station (BTS). BTS is equipment which facilitates wireless connection between user equipment (mobile) and network. Several
BSTs are connected to the Base Station Controller (BSC). BSC controls all the calls in all the connected base stations. Base Stations can be directly connected to BSC forms star configuration, in the form of chain i.e. one to another or in the form of loop configuration.
The GSM network can be divided into three broad parts - The Mobile Station (which is carried by the subscriber), The Base Station
Prof. Rajesh M. More*, Lecturer, GSMCOE, MCA, Pune-45
(Abstract - Global System for Mobile Communications (GSM) is a digital mobile telephone system which is widely used in Europe and other part of the world. In 1982 it was recognized as a standard for digital wireless communications adopted firstly by Europe and then by Asia, Africa etc.
INTRODUCTION
To develop a standard for mobile telephone the European Conference of Postal and Telecommunication Administrations (CEPT) created the Groupe Spécial Mobile (GSM) which was used across Europe. The GSM standard has been an advantage to both consumers and network operator. Consumer can get benefit from the ability to roam and switch carriers without switching phones whereas Network Operators can choose equipment from any of the many vendors implementing GSM. GSM also pioneered a low-cost (for network carrier) alternative to voice calls. The Short Message Service (SMS), also called "text messaging", which is now also supported on other mobile standards were backward-compatible with the original GSM phones. For example, Release ‘97 of the standard added packet data capabilities, by means of General Packet Radio Service (GPRS). Release '99 introduced higher speed data transmission using Enhance Data Rates for GSM Evolution (EDGE).
GSM ARCHITECTURE
GSM is a cellular network where each cell is connected or served by Base Transceiver Station (BTS). BTS is equipment which facilitates wireless connection between user equipment (mobile) and network. Several
BSTs are connected to the Base Station Controller (BSC). BSC controls all the calls in all the connected base stations. Base Stations can be directly connected to BSC forms star configuration, in the form of chain i.e. one to another or in the form of loop configuration.
The GSM network can be divided into three broad parts - The Mobile Station (which is carried by the subscriber), The Base Station
Bibliography: 1] [SCH03] Schiller Jochen, “Mobile Communication”, Pearson Education 2003. 2] [GAR01] Garg V., Joseph E. Wilkes, “Wireless and personal Communications Systems”, Prentice Hall, 2001. 3] [RAP06] Theodore S. Rappaport, “Wireless Communications”, Prentice Hall, 2006. 4] [FLO05] J. E. Flood, “Telecommunication Switching, Traffic and Networks”, Pearson Education, 2005. 5] [PRA] Prabhu, “Mobile Computing – A Book of Reading”, Universities Press, 2002.