mobile technology glossary

Here are the results for the letter g

GAIT

GSM/ANSI 136 Interoperability Committee

GAP

Generic Access Profile; a DECT term

Gbit/s

A unit of data transmission rate equal to one billion bits per second

Gc

The interface between the GGSN and the HLR in a GSM/GPRS network

GCF

Global Certification Forum

Gd

The interface between the SGSN and the SMSC in a GSM/GPRS network

Geostationary

Refers to a satellite in equatorial orbit above the earth which appears from the surface to be stationary

GERAN

GSM-EDGE Radio Access Network; the name for the evolution of GSM towards 3G based on EDGE

Gf

The interface between the SGSN and the EIR in a GSM/GPRS network

GGRF

GSM Global Roaming Forum

GGSN

Gateway GPRS Support Node; the gateway between a cellular network and a IP network.

GHz

A unit of frequency equal to one billion Hertz per second

Gi

The interface between the GGSN and the Internet in a GPRS network

GMPCS

Global Mobile Personal Communications by Satellite

GMSC

Gateway Mobile Services Switching Centre; the gateway between two networks

GMSK

Gaussian filtered Minimum Shift Keying; a refinement of FSK which minimises adjacent channel interference

Gn

The interface between the GGSN and the SGSN in a GPRS network

Gp

The interfaces between the GGSN/SGSN and the Border Gateway in a GPRS network

GPRS

General Packet Radio Service; standardised as part of GSM Phase 2+, GPRS represents the first implementation of packet switching within GSM, which is a circuit switched technology. GPRS offers theoretical data speeds of up to 115kbit/s using multislot techniques. GPRS is an essential precursor for 3G as it introduces the packet switched core required for UMTS

GPS

Global Positioning System; a location system based on a constellation of US Department of Defence satellites. Depending on the number of satellites visible to the user can provide accuracies down to tens of metres. Now being incorporated as a key feature in an increasing number of handsets

Gr

The interface between the SGSN and the HLR in a GPRS network

GRX

GPRS Roaming Exchange

Gs

The interface between the SGSN and the MSC in a GSM/GPRS network

GSM

Global System for Mobile communications, the second generation digital technology originally developed for Europe but which now has in excess of 71 per cent of the world market. Initially developed for operation in the 900MHz band and subsequently modified for the 850, 1800 and 1900MHz bands. GSM originally stood for Groupe Speciale Mobile, the CEPT committee which began the GSM standardisation process

GSM MoU

The GSM Memorandum of Understanding, an agreement signed between all the major European operators to work together to promote GSM. The precursor of the GSM Association

GSM-R

GSM-Railway, A variant of GSM designed to meet the special communications needs of international train operators