Global System for Mobile communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world.
- Its ubiquity makes international roaming very common between mobile phone operators, enabling subscribers to use their phones in many parts of the world.
- GSM differs from its predecessors in that both signalling and speech channels are digital, and thus is considered a second generation (2G) mobile phone system.
- This has also meant that data communication was easy to build into the system.
- GSM standard has been an advantage to both consumers (who benefit from the ability to roam and switch carriers without switching phones) and also to network operators (who can choose equipment from any of the many vendors implementing GSM
- GSM also pioneered a low-cost alternative to voice calls, the Short message service (SMS, also called “text messaging”).
- 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 Enhanced Data Rates for GSM Evolution (EDGE).
- Now the 3rd Generation Partnership Project (3GPP) specifications are being evolved based on (GSM) specifications. 3GPP standardization encompasses Radio, Core Network and Service architecture.
- CDMA is an alternative technology to GSM. 3rd Generation Partnership Project 2 (3GPP2) specifications are based on CDMA specifications.
GSM association’s website…http://www.gsmworld.com/index.shtml
More in future posts.
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