Geir Jevne

• Øgaard, Jon Anders S.; Li, Frank Yong; Jevne, Geir; KJELLSTADLI, KJETIL & Martian, Alexandru (2022). Internet Connected Open-Source based 4G MIMO and 5G NSA Systems: Prototyping and Performance, 2022 25th International Symposium on Wireless Personal Multimedia Communications (WPMC). IEEE conference proceedings. ISSN 978-1-6654-7318-7. doi: 10.1109/WPMC55625.2022.10014793.
• Frøytlog, Anders; Foss, Thomas; Bakker, Ole Alexander; Jevne, Geir; Haglund, Magne Arild & Li, Frank Yong [Vis alle 8 forfattere av denne artikkelen] (2019). Ultra-Low Power Wake-up Radio for 5G IoT. IEEE Communications Magazine. ISSN 0163-6804. 57(3), s. 111–117. doi: 10.1109/MCOM.2019.1701288. Fulltekst i vitenarkiv Vis sammendrag

  5G Internet of Things (5G IoT), which is currently under development by 3GPP, paves the way for connecting diverse categories of devices to the IoT via cellular networks. For battery-powered low-cost IoT devices, wake-up radio (WuR) appears as an eminent technique for prolonging the lifetime of such devices, thanks to its outstanding energy consumption performance. However, only some small-size battery-powered IoT devices are able to transmit to a cellular IoT base station (BS) directly. In this article, we present W2B-IoT, a prototype implementation of a WuR-based two-tier system, which bridges cellular IoT BS and WuR via a Bluetooth low energy (BLE)-enabled Android smartphone. Such a WuR-enabled IoT device features a current consumption of merely 390 nA and a response time of 95 ms for decoding a wake-up call.

• Kjellby, Rolf Arne; Cenkeramaddi, Linga Reddy; Johnsrud, Thor Eirik; Løtveit, Svein Erik; Jevne, Geir & Beferull-Lozano, Baltasar [Vis alle 10 forfattere av denne artikkelen] (2018). Design, Development and Deployment of Low-cost Short-range Self-powered Wireless IoT Devices, 2018 IEEE International Symposium on Smart Electronic Systems (iSES) (Formerly iNiS). IEEE conference proceedings. ISSN 978-1-5386-9172-4. s. 104–107. doi: 10.1109/iSES.2018.00031. Vis sammendrag

  This article presents the design and prototype implementation of a low-cost and short-range self-powered wireless IoT device based on energy harvesting for both indoor and outdoor applications. Prototyped devices are deployed in a star network configuration with a custom protocol. Based on measurements, devices achieve a line-of-sight range of 228.5m above 40m from the ground level. Nodes are powered based on energy harvesting from a small 0.36W solar panel and 120mAh lithium button cell as storage elements. The test in the well-lit room shows an average harvested power of 941.94μW over a period of 2.5 days, while under the low lighting conditions showed an average of 212μW over a period of 24h. From measurements, a fully charged rechargeable 120mAh cell lasts for 278 days with 55s transmission interval. Temperature, visible lights level and relative humidity sensors are integrated into the nodes.

• Kjellby, Rolf Arne; Cenkeramaddi, Linga Reddy; Johnsrud, Thor Eirik; Løtveit, Svein Erik; Jevne, Geir & Beferull-Lozano, Baltasar [Vis alle 7 forfattere av denne artikkelen] (2018). Design and Prototype Implementation of Long-range Self-powered Wireless IoT Device, 2018 IEEE International Symposium on Smart Electronic Systems (iSES) (Formerly iNiS). IEEE conference proceedings. ISSN 978-1-5386-9172-4. s. 215–218. doi: 10.1109/iSES.2018.00054. Vis sammendrag

  This paper presents the design and prototype implementation of long-range self-powered wireless IoT devices using nRF52840 based on energy harvesting. The test-bed is setup in both star and multi-hop configurations with optimized custom protocols. In both network configurations, nodes consume less power than what is harvested in an indoor light environment using a small 0.36W rated monocrystalline solar panel. The average power by which the battery was charged during the test was 941.94μW in an indoor environment. Nodes are able to operate for 12 months using a fully charged 120mAh rated rechargeable coin cell battery with 55s transmission interval. Based on measurements, a line of sight range of 1.8km is obtained using coded transmissions. Sensors of temperature, relative humidity and visible light are integrated into the nodes.

• Kjellby, Rolf Arne; Gorančić, Erol; Liland, Anders; Cenkeramaddi, Linga Reddy & Jevne, Geir (2018). Smart Brewery Controller, 2018 IEEE International Symposium on Smart Electronic Systems (iSES) (Formerly iNiS). IEEE conference proceedings. ISSN 978-1-5386-9172-4. s. 203–208. doi: 10.1109/iSES.2018.00052. Vis sammendrag

  This paper presents the design and development of a wireless smart brewery controller. The controller is designed to be implemented in breweries with resistive heating elements of up to 3000 watts. By utilizing Bluetooth Smart, the brewery can be remotely controlled from an Android application, with the possibility of adding recipes with ingredients, notifications, and parameter adjustments while brewing. The system has been integrated in a 27-liter kettle to demonstrate usability. A complete prototype is made and tested, in making different flavors of beers.

• Kjellby, Rolf Arne; Cenkeramaddi, Linga Reddy; Johnsrud, Thor Eirik; Løtveit, Svein Erik; Jevne, Geir & Beferull-Lozano, Baltasar [Vis alle 7 forfattere av denne artikkelen] (2018). Self-powered IoT Device based on Energy Harvesting for Remote Applications, 2018 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS). IEEE conference proceedings. ISSN 978-1-5386-8134-3. doi: 10.1109/ANTS.2018.8710171.

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• Kjellby, Rolf Arne; Cenkeramaddi, Linga Reddy; Johnsrud, Thor Eirik; Løtveit, Svein Erik; Jevne, Geir & Beferull-Lozano, Baltasar [Vis alle 10 forfattere av denne artikkelen] (2018). Design, Development and Deployment of Low-cost Short-range Self-powered Wireless IoT Devices.
• Kjellby, Rolf Arne; Cenkeramaddi, Linga Reddy; Johnsrud, Thor Eirik; Løtveit, Svein Erik; Jevne, Geir & Beferull-Lozano, Baltasar [Vis alle 7 forfattere av denne artikkelen] (2018). Design and Prototype Implementation of Long-range Self-powered Wireless IoT Device.
• Kjellby, Rolf Arne; Gorančić, Erol; Liland, Anders; Cenkeramaddi, Linga Reddy & Jevne, Geir (2018). Smart Brewery Controller.
• Kjellby, Rolf Arne; Cenkeramaddi, Linga Reddy; Johnsrud, Thor Eirik; Løtveit, Svein Erik; Jevne, Geir & Beferull-Lozano, Baltasar [Vis alle 7 forfattere av denne artikkelen] (2018). Self-Powered IoT Device based on Energy Harvesting for Remote Applications.
• Kjellby, Rolf Arne; Johnsrud, Thor Eirik; Løtveit, Svein Erik; Cenkeramaddi, Linga Reddy & Jevne, Geir (2018). Development, Deployment & Evaluation of Wireless IoT Devices with Energy Harvesting. Universitetet i Agder.

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