In an emergency situation, a key consideration is to control and contain the scene. Key to this is an effective communications strategy with an emphasis on field personnel. The ability to remain in contact with your colleagues and operational centres could be the difference between a controlled situation and one which would be potentially hazardous for both operatives and the general public.
"This new generation of HART vehicles... enable ambulance service personnel on the ground to make more effective decisions..." CBRN HART Co-ordinator, London Ambulance
A standard method of communication would be to utilise the macro GSM networks. However, it has been the case that macro GSM networks have been closed down to remove the risk of cellular control of remote devices. Also, in situations that are in densely populated areas, the sheer volume of cellular traffic at the scene can cause network congestion which severely restricts communication for personnel managing the incident.
The Private Mobile Network overcomes these obstacles by generating its own secure, private GSM network regardless of macro network conditions.