security
Songdo International City, described as the largest private real estate development ever, is being constructed on land reclaimed from the Yellow Sea
the city began to explode. IMPA moved into this purpose- built headquarters in 1992. Today, IMPA is one of the largest police authorities in
South Korea. It owes this to its growing population, its proximity to Seoul, and to its frontier status, with the bleak North Korean border not far away. IMPA’s total police force now numbers around 7000, a
figure which is likely to grow in the coming years. Tis is a factor that the authority had to take into account when considering future requirements for its secure information and communications networks. Te authority has ten main branches, each with its own
police station. Tese are spread across the mainland and numerous islands of varying sizes which can be seen while approaching Incheon from the air.
A move to TETRA Mr Kim explains that the police authority inherited a conventional VHF network, and that this is still sometimes used for indoor and underground coverage as a back-up system, and by special forces when they leave the coverage of the current TETRA network. However, year by year, as the TETRA network is built out further and upgraded, the
ncheon City continues to expand at a startlingly rapid rate. A public transport ride from the airport leads out into the bay towards the mainland across the futuristic 12-kilometre long Incheon Bridge to the New City area of Songdo. There, a sprawling array of cranes, trucks and bulldozers clear wide stretches of reclaimed land, paving the way for a new business centre with shiny, brand-new hotels, convention centres and offices. Recent additions include the 68-storey North East Asia Trade Tower, 312 metres high.
need for VHF is being reduced. An analogue trunked system based on EDACS technology was installed in 1995 and operated for ten years, but this has now been switched off. When IMPA commissioned its own TETRA network
back in 2004, several other South Korean police authorities had already chosen TETRA as their preferred technology. TETRA is now established as the technology of choice for South Korean public safety. Among the reasons are the strong global trend towards digital technology and the forces’ need for increased radio communications capacity and functionality. As the population continues to expand, its police forces are growing correspondingly, and there has been a qualitative shift in communications requirements to cope with the strains of a modern society. As a truly global communications standard, TETRA has
been able to provide a real choice of radio suppliers, while competition between them has reduced the price of both infrastructure and terminal equipment. Full coverage for IMPA’s initial system was reached
by 2005 with the installation of 11 radio sites. Te total number of radio terminals working on the network is now close to 4000. Tey include more than 3000 handportables, almost 300 fixed terminals and close to 500 mobiles,
Taking shape across the water I
The spectacular Incheon Bridge links Incheon to the New City area of Songdo
Hang Sun Kwang (centre), chief communications director of Incheon Metropolitan Police Authority, and Kim Byung Hak, director of the radio division, in conversation with the author. As it expands, the TETRA network is progressively replacing a VHF analogue mobile radio system
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