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Global System for Mobile communications

Global System for Mobile communications - GSM What is GSM...

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GSM What is GSM? GSM (Global System for Mobile communications) is an open, digital cellular technology used for transmitting mobile voice and data services. What does GSM offer? GSM supports voice calls and data transfer speeds of up to 9.6 kbps, together with the transmission of SMS (Short Message Service). Intermediate second generation (2.5G): An intermediate second generation called 2.5G offers enhancements to the data services on existing 2G digital platforms, achieving many of the same speeds offered by 3G networks but without requiring the operator to acquire new spectrum and put in an entirely new infrastructure. The key 2.5G standards include GPRS and EDGE. GPRS General Packet Radio Service is a packet-switching technology that enables data transfers through cellular networks. It is used for mobile internet, MMS and other data communications. In theory the speed limit of GPRS is 115 kbps, but in most networks it is around 35 kbps. Informally, GPRS is also called 2.5G.
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  • Fall '09
  • Prof.DaronAcemoglu
  • Universal Mobile Telecommunications System, 3G mobile communications, FOMA. 3G standards

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