X-Nico

unusual facts about Global System for Mobile Communications



Constant-weight code

Binary constant-weight codes have several applications, including frequency hopping in GSM networks.

Galatasaray Mobile

"Avea" (A ve (and) A: Aria and Aycell) is one of three GSM operators in Turkey.

Mobile phone operator

In the 1990s, the 'second generation' (2G) mobile phone systems emerged, primarily using the GSM standard.

Mobile Station Roaming Number

A MSRN is assigned for every mobile terminated call, not only the calls where the terminating MS lives on a different MSC than the originating MS. Although this seems unnecessary since many vendors' VLR's are integrated with the MSC, the GSM specification indicates that the MSC and VLR (Visitor Location Register) do not need to reside on the same switch.

Rayleigh fading

These Doppler shifts correspond to velocities of about 6 km/h (4 mph) and 60 km/h (40 mph) respectively at 1800 MHz, one of the operating frequencies for GSM mobile phones.

Swedish response to Hurricane Katrina

On September 2, awaiting a formal request from the U.S. State Department, the Rescue Service Agency prepared a Hercules cargo aircraft filled with three complete GSM systems, first aid kits, blankets, ready-to-eat meals, generators, and 2 large water purification plants.


see also

Extensible Authentication Protocol

EAP for GSM Subscriber Identity Module (EAP-SIM) is used for authentication and session key distribution using the Subscriber Identity Module (SIM) from the Global System for Mobile Communications (GSM).