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Communications Network

5G Network in Croatia

Mobile communications network operators started the first commercial 5G service in the Republic of Croatia through DSS technology in October 2020, using radio frequency bands for which they already had licences to use radio spectrum, and which they used before only for 4G technology.
Operators tested 5G technology in restricted areas, mostly in the 3,6 GHz radio frequency band. The tests were first of a technical character, while in later phases they took place on very limited groups of end users.
Following the public auction, on 12 August 2021 HAKOM adopted decisions on the assignment of 700 MHz, 3.6 GHz and 26 GHz frequency bands at national level and 3.6 GHz at regional (county) level.
The total amount of RF spectrum fees achieved in the public auction is 358.995.433,00 HRK. The fees collected by the auction are paid in full to the state budget.
Following the auction, A1 Hrvatska, Hrvatski Telekom and Telemach Hrvatska started providing commercial services via 5G network.
Information on base stations that operate commercialy are publicly available within the HAKOM's GIS portal thematic section „Radio stations“, that is within an integrated viewer.

The previous transition to digital television has reallocated a part of the radio spectrum (694-862 MHz) that was previously used exclusively for television and it is now used for mobile communications networks. Since television receivers and antenna systems can be adapted to receive signals from the entire 470-862 MHz frequency band, the operation of base stations in certain situations may interfere with reception by the end user. In 2017, HAKOM adopted a decision setting out the obligations for operators in the interference notification and removal process as the result of the operation of base stations in the 790-862 MHz frequency band, but since on 12 August 2021 licences for the use of the 700 MHz frequency band (703-733/758-788 MHz) for mobile communications networks were issued, the existing procedure was amended to include the operation of base stations in the 700 MHz frequency band. HAKOM will continue, within the limits of its powers prescribed by the Electronic Communications Act, to monitor the implementation of the procedure for elimination of interference and use of radio spectrum in accordance with the issued licences.

If users notice the interference in digital terrestrial television reception and suspect that it is caused by putting the base station  into operation, the interference should be reported to the company Odašiljači  i Veze d.o.o. (OIV) through the customer support and interference reporting service (notification link). OIV receives all reports of interference from television viewers and then identifies the potential cause of interference (other causes besides the influence of base stations are possible). In case the interference is caused by the base station operation, the problem solving is under the responsibility of mobile communication network operators, which are obliged to turn off the base station until the cause of the interference is finally resolved.

The HAKOM solution can be found on the following link.