Mobile communication technologies
From INVESaTWIKI
Technological trends - Synergies with mobile telecommunication
The above-mentioned convergence is further
enhanced by the development of mobile
communications networks (GSM, UMTS etc)
that enable real time data to move between
system components. Location Based Services (LBS) are predicted to be amongst the most
promising services of future wide-band mobile
networks, alongside with voice and multimedia
services.
LBS services are now rapidly growing in the
regions where cellular networks are already
widely deployed such as in Europe, North
America or the Far East.With the advent of
enhanced technologies and third generation
mobile networks, offering multi-media
services, LBS applications will be further
encouraged.
Furthermore, by using navigating ranging
signals from satellites in conjunction with
additional data provided by mobile networks,
it is possible to reduce the typical satellite
navigation computation time, thus increase
positioning performances (i.e. parameters
such as availability, continuity, time to first fix,
etc.). Reference stations can also transmit
additional navigation data, e.g. satellite
ephemeris, synchronisation time, differential
corrections, etc. As part of the data is not
retrieved directly from satellite signals through
classical algorithms, mobile handsets can use
far weaker navigation signals than with
conventional receivers.
In summary, hybridisation of communication
and satellite navigation signals will enhance
indoor positioning, which is of paramount
importance for users. [1]
References
[1] Galileo Joint Undertaking
"Business in satellite navigation - An overview of market developments and emerging applications".




