airports “TETRA’s ability to support the dynamic grouping and
interaction of different communities means that resources can be quickly allocated to specific operations such as baggage handling, catering, de-icing and so on. Other integral TETRA capabilities – such as GPS in terminals and encryption – enhance operational efficiencies even further.” Operating in an airport environment also places
additional heavy demands on the radio infrastructure and terminal equipment when it comes to dealing with the noise – both electronic and aural – and the complexities of ensuring consistent radio coverage in both open and closed areas.
efficiencies can be achieved simply by applying appropriate, well-understood technologies to existing problems
‘ Alan Dowen, international business development
manager at the TETRA infrastructure specialist Artevea emphasizes, “One key advantage of TETRA in a busy and noisy environment involves the codec compression and decompression ratio, so voice is clearer to the receiving party than the background noise picked up in analogue systems.
Huge improvements to operational ’
“Radio surveys are essential and it can be necessary sometimes to provide coverage in tunnels, basements and high-density buildings, and for these a distributed antenna
systems (DAS) and/or radiating cable may be necessary. Feeding such a DAS could employ direct co-ax cable from the base station, a cell enhancer, a fibre-optic repeater station or a dedicated base station – depending on cost, distance and type of building to be served.” He continues: “When you’re looking at the actual applications areas and groups in an airport, these would typically include aircraft arrivals and departures, customer check-in, engineering activities, baggage handling and security. In addition, you also have the various groups that would be involved in the event of an emergency, such as aircraft evacuation, incidents in the terminal buildings, unscheduled aircraft arrivals and departures and military operations.”
Getting value here and now While the rest of the wireless world seems intent on squeezing as much bandwidth and speed out of the spectrum as possible, with many different cellular and fixed initiatives gathering under the catch-all generic term of 4G, TETRA has taken a much more measured – and arguably saner – approach to broadband. While some of these issues are covered later in this
article, current TETRA implementations – especially in the commercial sector – illustrate how huge improvements to operational efficiencies can be achieved simply by applying appropriate, stable and well-understood technologies to existing problems. Te ICT sector is littered with examples of projects
where leading-edge technologies have been deployed inappropriately, only to founder in a morass of cost
A TETRA network can provide
multiple, dynamic talkgroups to
support teams both on the apron and inside the terminal
20 TE TRA TODAY Issue 1 November 2010 - February 2011
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