Publications
Technical reports
Norske mobilnett i 2022
In Tilstandsrapport fra Simula Metropolitan Center for Digital Engineering, Center for Resilient Networks and Applications. Oslo, Norway: Simula, 2023.Status: Published
Norske mobilnett i 2022
Denne rapporten er utarbeidet av Center for Resilient Networks and Applications (CRNA), som er en del av Simula Metropolitan Center for Digital Engineering. CRNA driver grunnleggende forskning innen robusthet og sikkerhet i nettverk med mandat og finansiering fra kommunal- og moderniseringsdepartementet. Senteret produserer en årlig rapport om tilstanden i norske mobilnett. Årets rapport er den tiende i rekken.
Afilliation | Communication Systems |
Project(s) | The Center for Resilient Networks and Applications |
Publication Type | Technical reports |
Year of Publication | 2023 |
Secondary Title | Tilstandsrapport fra Simula Metropolitan Center for Digital Engineering, Center for Resilient Networks and Applications |
Date Published | 05/2023 |
Publisher | Simula |
Place Published | Oslo, Norway |
ISBN Number | 978-82-92593-38-7 |
Keywords | Mobile networks, Performance, Stability |
Notes | |
URL | https://www.simulamet.no/sites/default/files/norske_mobilnett2022.pdf |
Research Notes |
Technical reports
Norske mobilnett i 2021 – Tilstandsrapport fra Centre for Resilient Networks and Applications
Oslo/Norway: Simula Metropolitan Center for Digital Engineering, Centre for Resilient Networks and Applications (CRNA), 2022.Status: Published
Norske mobilnett i 2021 – Tilstandsrapport fra Centre for Resilient Networks and Applications
Denne rapporten er utarbeidet av Center for Resilient Networks and Applications (CRNA), som er en del av Simula Metropolitan Center for Digital Engineering. CRNA driver grunn- leggende forskning innen robusthet og sikker- het i nettverk med mandat og finansiering fra Kommunal- og moderniseringsdepartementet. Senteret produserer en årlig rapport om tilstan- den i norske mobilnett. Årets rapport er den niende i rekken.
Afilliation | Communication Systems |
Project(s) | NorNet, The Center for Resilient Networks and Applications, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, SMIL: SimulaMet Interoperability Lab |
Publication Type | Technical reports |
Year of Publication | 2022 |
Publisher | Simula Metropolitan Center for Digital Engineering, Centre for Resilient Networks and Applications (CRNA) |
Place Published | Oslo/Norway |
ISBN Number | 82-92593-36-5 |
URL | https://www.simula.no/sites/default/files/norske_mobilnett_i_2021.pdf |
Journal Article
A Multi-Perspective Study of Internet Performance during the COVID-19 Outbreak
Arxiv (2021).Status: Published
A Multi-Perspective Study of Internet Performance during the COVID-19 Outbreak
Afilliation | Communication Systems |
Project(s) | Simula Metropolitan Center for Digital Engineering, GAIA |
Publication Type | Journal Article |
Year of Publication | 2021 |
Journal | Arxiv |
Publisher | Arxiv |
Place Published | Arrxiv.org |
Keywords | COVID, Internet, network |
DOI | 10.48550/arXiv.2101.05030 |
Journal Article
Dissecting Energy Consumption of NB-IoT Devices Empirically
IEEE Internet of Things Journal 8, no. 2 (2020): 1224-1242.Status: Published
Dissecting Energy Consumption of NB-IoT Devices Empirically
3GPP has recently introduced NB-IoT, a new mobile communication standard offering a robust and energy efficient connectivity option to the rapidly expanding market of Internet of Things (IoT) devices. To unleash its full potential, end-devices are expected to work in a plug and play fashion, with zero or minimal configuration of parameters, still exhibiting excellent energy efficiency. We performed the most comprehensive set of empirical measurements with commercial IoT devices and different operators to date, quantifying the impact of several parameters to energy consumption. Our findings prove that parameters’ settings does impact energy consumption, so proper configuration is necessary. We shed light on this aspect by first illustrating how the nominal standard operational modes map into real current consumption patterns of NB-IoT devices. Further, we investigated which device-reported metadata metrics better reflected performance and implemented an algorithm to automatically identify device state in current time series logs. We worked with two major western European operators to provide a measurement-driven analysis of the energy consumption and network performance of two popular NB-IoT boards under different parameter configurations. We observed that energy consumption is mostly affected by the paging interval in Connected state, set by the base station. However, not all operators correctly implement such settings. Furthermore, under the default configuration, energy consumption in not strongly affected by packet size nor by signal quality, unless it is extremely bad. Our observations indicate that simple modifications to the default parameters’ settings can yield great energy savings.
Afilliation | Communication Systems |
Project(s) | 5G-VINNI: 5G Verticals INNovation Infrastructure |
Publication Type | Journal Article |
Year of Publication | 2020 |
Journal | IEEE Internet of Things Journal |
Volume | 8 |
Issue | 2 |
Pagination | 1224 - 1242 |
Date Published | 08/2020 |
Publisher | IEEE |
ISSN | 2327-4662 |
Keywords | energy consumption, Internet of things, LTE, NB-IoT |
DOI | 10.1109/JIOT.2020.3013949 |
Proceedings, refereed
On the Accuracy of Country-Level IP Geolocation
In Applied Networking Research Workshop (ANRW). Madrid/Spain: ACM, 2020.Status: Published
On the Accuracy of Country-Level IP Geolocation
The proliferation of online services comprised of globally spread microservices has security and performance implications. Understanding the underlying physical paths connecting end points has become important. This paper investigates the accuracy of commonly used IP geolocation approaches in geolocating end-to-end IP paths. To this end, we perform a controlled measurement study to collect IP level paths. We find that existing databases tend to geolocate IPs that belong to networks with global presence and those move between networks erroneously. A small percentage of IP geolocation disagreement between databases results in a significant disagreement when geolocating end-to-end paths. Geolocating one week of RIPE traceroute data validates our observations.
Afilliation | Communication Systems |
Project(s) | GAIA, NorNet, The Center for Resilient Networks and Applications, Simula Metropolitan Center for Digital Engineering |
Publication Type | Proceedings, refereed |
Year of Publication | 2020 |
Conference Name | Applied Networking Research Workshop (ANRW) |
Date Published | 07/2020 |
Publisher | ACM |
Place Published | Madrid/Spain |
ISBN Number | 978-1-4503-8039-3 |
Keywords | Geolocation Approaches, Geolocation Databases, IP Geolocation |
DOI | 10.1145/3404868.3406664 |