Caverion is ensuring optimal mobile coverage and creating a healthier indoor climate at one of the world's leading higher education institutions. Caverion will install a Distributed Antenna System (DAS) in the Technical University of Denmark’s (DTU) buildings in Lyngby, Ballerup and Risø, when the university's educational facilities expand to occupy one million square metres. Currently, the DTU’s campus in Lyngby, Copenhagen is Denmark’s biggest contracting company, spending DKK 8 billion on construction in 2016.
A DAS is an indoor antenna system that connects one or more mobile operators and creates coverage in entire buildings or in parts of buildings. In other words, when DAS is installed, it is as good as moving the mast indoors, and it provides a better indoor climate.
- “If we didn’t have a DAS installed today, being inside buildings could be damaging to the health because buildings are made of such dense material. Environmental standards are becoming more and more stringent so, for example, there’s more and more insulation in ceilings. When base stations are located closer, phones do not need to emit as much radiation,” says Thomas Bech, Project manager at Caverion.
We want to be online
Today we expect to be able to get online at any time and in any place. Dense buildings, facades made from special materials and a large number of people indoors at the same time represent challenges for both coverage and capacity in the existing network. DAS ensures optimal mobile coverage everywhere.
- “We ensure that there is good network coverage everywhere on the DTU’s premises. Some people don’t have access to a fixed-line network – they need to access the internet via mobile networks –so it’s not good enough if this doesn’t work. We all know that feeling when we go inside a building and the signal disappears or becomes weak. The DTU is one of the world's leading educational centres, so the network simply has to work,” says Thomas Bech, Project Manager at Caverion.
Optimal mobile coverage
DAS ensures optimal indoor mobile coverage for three mobile network operators, TDC, 3 and Tele Nord/Telia, each of which are on their own main exchanges. This coverage is provided by a single DAS network. Caverion has supplied a main exchange in Lyngby and, in the long term, will also supply the main exchange for Ballerup and Risø. Decentralised antennae have been designed for each building and will be connected to the main exchanges via fibre links. Mobile coverage will then be distributed to each individual building, ensuring optimal mobile coverage across the entire university, whose activities range from complex research projects dealing with dangerous diseases to a large number of educational courses such as computer science, physics and medicine, and various forms of collaboration with upper secondary schools and colleges, companies and authorities.
- “Research into dangerous diseases is being done in some rooms, and people are prohibited from taking their mobile phones inside. Such rooms must have good Wi-Fi coverage,” says Thomas Bech.
The different units on the educational site are free to choose whether they want 2G, 3G or 4G, and whether they want Wi-Fi. The DAS will be tailored to meet individual requirements. The DTU’s system was designed by Caverion and can support all technologies, including 2G, 3G and 4G, for both mobile data and ordinary mobile calls.