The Evolution of the
The existing mobile
digital communications network continues to develop, in order to
increase capacity, coverage, quality and data transmission rates. There
have been a series of developments that are now starting to be deployed
with the aim of enhancing the GSM network functionality.
The next section shows the enhancements planned for the next few years,
starting off with High Speed Circuit Switched Data (HSCD). The next
development is General Packet Radio Services (GPRS), this is a
packet-switched service that allows full mobility and wide-area
coverage. Enhanced Data rates for GSM Evolution (EDGE) will use enhanced
modulation and related techniques, further improving local mobility.
Universal Mobile Telecommunications System (UMTS) will include second
and third generation services.
Figure 18 Evolution
of GSM Data Service
(Adapted from Ericsson Document EN/LZT 123 5374 R1B)