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Smart Green Cities: ‘With New Technology We Can Reduce Air Pollution’

Welcome to 5G Croatia.

The largest and fastest 5G network in Croatia has been provided by Hrvatski Telekom, which recently won the most radio frequency spectrum at a public auction. Thanks to this, as of August 12, Hrvatski Telekom has introduced gigabit speeds as the standard, allowing users across Croatia to enjoy a new era of mobile network evolution. The only prerequisite is that you have a mobile phone that supports the 5G signal and are located within the coverage area. Of the 600 locations where HT provides the 5G network, as many as 149, or one in four, operate at 3.6 GHz, enabling even greater gigabit speeds for half a million residents across 12 cities!

High speeds, greater capacities, faster response times, and the wide applicability of the 5G network will change the Internet as we know it and stimulate the creation of previously unimaginable services and products that will simplify and ease our lives, driving economic momentum in Croatia and societal development.

How can we all take advantage of the opportunities brought by 5G technology? In the 5G UNBOXING special by Hrvatski Telekom, scientists, engineers, gamers, innovative entrepreneurs, managers, doctors, artists, and YouTubers present over 30 solutions based on 5G technology.


It’s a rainy morning. You get into your car and head to work. However, halfway there, you receive a message from home that it has started to rain, and you give approval for the blinds to be lowered. The drive is pleasant as there are no major traffic jams: drones monitor traffic, and sensors at traffic lights connected to a central system assist as well. If you decided to bike to work – air quality sensors will inform you where the least pollution is at that moment, allowing you to choose the cleanest, green route.  

Welcome to a new era of smart cities where devices and sensors communicate in real-time, enabling faster, more efficient, and higher-quality public services. This is a small part of an imagined morning in a smart city based on new 5G technology that allows easier communication between devices, faster data exchange at high gigabit speeds, and excellent network response (latency). In the EU, 300 smart cities have already been declared, while Croatia currently has 40. With 5G technology, the number of smart cities and their efficiency will grow. The digitalization of city services is already happening, but 5G ensures their additional connectivity and networking into a more efficient whole.

With 5G, we have entered the peak of the fourth industrial revolution. How can we all experience the benefits of new scientific and technological achievements? In the exclusive 5G UNBOXING series by Hrvatski Telekom, 33 prominent experts reveal for the first time in Croatia how each of us can take advantage of the opportunities brought by 5G technology. Scientists, engineers, gamers, innovative entrepreneurs, managers, doctors, artists, and YouTubers, in conversation with Vida Juračić, an architect and popular YouTuber, present over 30 solutions based on 5G technology that will simplify and ease our lives and enable business growth and strong development of industries and society as a whole.

5G UNBOXING: SMART CITY

Hrvatski Telekom has provided the largest and fastest 5G mobile network in Croatia, covering 2 million residents, with the highest gigabit speeds already available in 12 cities, creating the conditions for digitalization and strong development of these cities and increasing the efficiency of public services.

– A smart city and 5G technology will offer a whole range of new services to citizens. We will live more comfortably and move more easily through the city, aided by the Internet of Things, which will develop more robustly with 5G. This is a new paradigm where various devices from everyday life are connected to different sensors that perceive the environment and provide us with information about the world around us. For example – about air quality or traffic density. We can then use this information in real-time. We are informed about changes in the environment, receive information on our phones, and decide which street to take to work – the one where the air is currently the cleanest – explained Prof. Dr. Ivana Podnar Žarko from the Research Support Center at FER. Together with her colleagues at FER, she has just planted an urban smart garden where they are conducting an experiment growing tomatoes and peppers with the help of sensors that report changes in environmental conditions.

How did Hrvatski Telekom create the largest and fastest 5G network in Croatia?
  • July 2018. first 5G demonstration in Croatia – playing football in virtual reality in Pula  
  • March 2019. first testing of the 5G network in Croatia – in Samobor
  • June 2019. first gigabit speeds measured on the island (Krk)
  • September 2019. first video transmission via drone on the 5G network
  • October 2020. Hrvatski Telekom first in Croatia launched a commercial 5G network
  • December 2020. in collaboration with FER launched the first 5G campus network in Croatia
  • December 2020. 5G network available in 17 Croatian cities with coverage of 1.2 million residents
  • June 2021. 5G network available in 76 cities and 11 municipalities with coverage of 2 million residents
  • June 2021. first 5G roaming enabled
  • August 2021. even greater gigabit speeds for 500 thousand residents in 12 Croatian cities

Hana Matanović, director of the Croatian IT company Smart Sense dedicated to the development of smart green cities, emphasizes:

– 5G allows us to cover a larger urban area with our sensors that measure air quality, thus obtaining a greater amount of data that we can manage in real-time. With 5G, we will be able to act more precisely and quickly on pollution in a specific urban area. With the 5G network, the data we collect in the field is processed faster, allowing us to react more quickly – explained Matanović.

Karlo Guštin from Ericsson Nikola Tesla believes that in order to make quality decisions about environmental preservation, a range of stakeholders must collaborate. And for that collaboration, internet speed is of great importance.

– 5G will enable devices that are key to environmental protection to communicate with each other. Users of these devices will more efficiently collect information from these systems and make informed decisions about what to do to protect the environment in the best possible way – said Guštin, adding that Ericsson Nikola Tesla has already installed a sensor on the Kupa near Ozalj that monitors basic water quality parameters, and biologists, thanks to these sensors and 5G communication, can receive information in real-time and decide how to proceed.

– We are living through the fourth industrial revolution, and artificial intelligence and robotics are its main drivers – says Prof. Dr. Bojan Jerbić, head of the Regional Center of Excellence for Robotic Technologies (CRTA) at the Faculty of Mechanical Engineering and Naval Architecture.

– With 5G, new possibilities are opening up at all levels in the city, and healthcare in a smart city is one of the most important areas of application. 5G technology will mean a lot in the development of medical robotics. With smart devices and the 5G network, you will be able to, for example, monitor your own health parameters that will be stored in central databases and analyzed in real-time. By analyzing this data, we will be able to prevent a whole range of diseases – added Jerbić.

Prof. Dr. Darko Chudy from the Department of Neurosurgery at KB Dubrava announces that a significant part of the smart city will consist of healthcare, which, with new technologies, has the opportunity to become more efficient.

– With 5G technology, more and more robots will be present in operating rooms across Croatia, working wirelessly. We will also produce these robots in our country, and they will assist in surgeries and be beneficial to the citizens of Croatia. I expect even more precise, safer, faster, and higher-quality healthcare – says Prof. Dr. Chudy.

We are at a turning point in the development of humanity. The world as we know it will never be the same again. The way we work, live, and entertain ourselves will change forever. Education, healthcare, culture, transportation, entertainment, entire industries are facing unimaginable changes. Cities, societies, and economies are entering a new, gigabit era. Welcome to the 5G world.

A small smart city in Radnička in Zagreb

Some smart city solutions can be tested in the center of Zagreb in Radnička.

– In front of the Hrvatski Telekom building, there is a small smart city. There is a smart bench that has a solar panel so citizens can charge their phones or surf the internet since it has a built-in hot-spot. On the right side is a smart bin. It also has a solar panel, and inside are sensors that monitor the fullness of the container, and when the bin is full, the sensors send information to the central system. In the smart parking area, there are sensors that detect the occupancy of parking spaces. If you have the app, you can check in advance which space is free. Next to the parking is a station representing a public bike system. A user can come, authorize themselves, take a bike, ride for a certain number of hours, return it here, and pay what is necessary. On the dashboard located in the building, we can also see the display of Hrvatski Telekom’s electric charging network, as well as data from sensors that measure air quality. We are currently looking at the air quality in Radnička. An index of 37 shows that the amount of harmful particles in the air has no high impact on the population, which is great for us. This is a small demonstration of how a smart Croatian city can look with the 5G network – says Josip Stjepanović from Hrvatski Telekom, presenting part of HT’s smart solutions.

5G UNBOXING – a series followed by 350 thousand people! Check why

Applying the principles of content design focused on people’s needs, the 5G UNBOXING series by Hrvatski Telekom analyzes the future of gaming and smart cities through 6 YouTube webisodes, exploring the opportunities of private campus networks and new potentials of drones and video streaming, and entering new realities (AR, VR, MR). Check why more than 350 thousand people follow 5G UNBOXING!

5G UNBOXING: HOW 5G WILL CHANGE CROATIA

5G UNBOXING: THE FUTURE OF GAMING HAS ARRIVED

5G UNBOXING: STREAMING REVOLUTION

5G UNBOXING: AR.VR. MR. NEW REALITIES

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The content was created in collaboration with Hrvatski Telekom.