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Publications (10 of 38) Show all publications
Abrahamsson, H., Henriksson, D., Makonyi, K., Menéndez Hurtado (, D. & Sandell, J. (2023). Towards automated and proactive anomaly detection in a fiber access network. In: Proceedings of 18th Swedish National Computer Networking and Cloud Computing Workshop (SNCNW 2023), Kristianstad, June 14-15, 2023.: . Paper presented at 18th Swedish National Computer Networking and Cloud Computing Workshop (SNCNW 2023).
Open this publication in new window or tab >>Towards automated and proactive anomaly detection in a fiber access network
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2023 (English)In: Proceedings of 18th Swedish National Computer Networking and Cloud Computing Workshop (SNCNW 2023), Kristianstad, June 14-15, 2023., 2023Conference paper, Published paper (Refereed)
Abstract [en]

Communication networks are vital for society and network availability is therefore crucial. There is a huge potential in using network telemetry data and machine learning algorithms to proactively detect anomalies and remedy problems before they affect the customers. In practice, however, there are many steps on the way to get there. In this paper we present ongoing development work on efficient data collection pipelines, anomaly detection algorithms and analysis of traffic patterns and predictability.

National Category
Computer Sciences
Identifiers
urn:nbn:se:ri:diva-67488 (URN)
Conference
18th Swedish National Computer Networking and Cloud Computing Workshop (SNCNW 2023)
Available from: 2023-10-02 Created: 2023-10-02 Last updated: 2023-10-02Bibliographically approved
Rabitsch, A., Grinnemo, K. J., Brunstrom, A., Abrahamsson, H., Ben Abdesslem, F., Alfredsson, S. & Ahlgren, B. (2022). Utilizing Multi-Connectivity to Reduce Latency and Enhance Availability for Vehicle to Infrastructure Communication. IEEE Transactions on Mobile Computing, 21(1), 352-365
Open this publication in new window or tab >>Utilizing Multi-Connectivity to Reduce Latency and Enhance Availability for Vehicle to Infrastructure Communication
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2022 (English)In: IEEE Transactions on Mobile Computing, ISSN 1536-1233, E-ISSN 1558-0660, Vol. 21, no 1, p. 352-365Article in journal (Refereed) Published
Abstract [en]

Cooperative Intelligent Transport Systems (C-ITS) enable information to be shared wirelessly between vehicles and infrastructure in order to improve transport safety and efficiency. Delivering C-ITS services using existing cellular networks offers both financial and technological advantages, not least since these networks already offer many of the features needed by C-ITS, and since many vehicles on our roads are already connected to cellular networks. Still, C-ITS pose stringent requirements in terms of availability and latency on the underlying communication system; requirements that will be hard to meet for currently deployed 3G, LTE, and early-generation 5G systems. Through a series of experiments in the MONROE testbed (a cross-national, mobile broadband testbed), the present study demonstrates how cellular multi-access selection algorithms can provide close to 100% availability, and significantly reduce C-ITS transaction times. The study also proposes and evaluates a number of low-complexity, low-overhead single-access selection algorithms, and shows that it is possible to design such solutions so that they offer transaction times and availability levels that rival those of multi-access solutions.

Keywords
Cooperative intelligent transport systems (C-ITS), multi-connectivity, multi-access, cellular networks, interface selection
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-49084 (URN)10.1109/TMC.2020.3028306 (DOI)85099742008 (Scopus ID)
Available from: 2020-10-13 Created: 2020-10-13 Last updated: 2023-05-19Bibliographically approved
Marsh, I., Abrahamsson, H. & Hsu, P.-L. (2021). Data-driven traffic flow : Summary of experiments.
Open this publication in new window or tab >>Data-driven traffic flow : Summary of experiments
2021 (English)Report (Other academic)
Abstract [en]

This final report is the second of two reports. Both are the result of a Swedish project, the Swedish Energy Authority’s TENS project, which spanned from 2018-2021. Other reports from the project provide results from estimating emissions from traffic measurements as well as simulation studies. Like any European capital, Stockholm suffers from many problems related to its road network. The main factor is traffic jams, which are aggravated with difficult weather conditions in winter but also due to accidents, popular events and holidays. Therefore, this report provides the results from a data-driven approach to estimating traffic flow. This work aims at predicting and understanding the behavior of this network based on data collected at several places. More specifically, the goal is to predict and model the traffic flow i.e macroscopic information, on ground measurements (MCS), using floating microscopic (INRIX) data. We focus on estimating the fundamental traffic law relationships, the flow using time series and future directions. Methods and results are in the related work section.

Series
RISE Rapport ; 2021:119
Keywords
Transport ITS, data-driven, traffic flow
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:ri:diva-57513 (URN)978-91-89561-10-6 (ISBN)
Note

The first report in this serie of two: http://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-57512

Available from: 2022-01-03 Created: 2022-01-03 Last updated: 2023-05-19Bibliographically approved
Marsh, I., Paladi, N., Abrahamsson, H., Gustafsson, J., Sjöberg, J., Johnsson, A., . . . Amiribesheli, M. (2021). Evolving 5G: ANIARA, an edge-cloud perspective. In: Proceedings of the 18th ACM International Conference on Computing Frontiers 2021, CF 2021: . Paper presented at 18th ACM International Conference on Computing Frontiers 2021, CF 2021, 11 May 2021 through 13 May 2021 (pp. 206-207). Association for Computing Machinery, Inc
Open this publication in new window or tab >>Evolving 5G: ANIARA, an edge-cloud perspective
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2021 (English)In: Proceedings of the 18th ACM International Conference on Computing Frontiers 2021, CF 2021, Association for Computing Machinery, Inc , 2021, p. 206-207Conference paper, Published paper (Refereed)
Abstract [en]

ANIARA (https://www.celticnext.eu/project-ai-net) attempts to enhance edge architectures for smart manufacturing and cities. AI automation, orchestrated lightweight containers, and efficient power usage are key components of this three-year project. Edge infrastructure, virtualization, and containerization in future telecom systems enable new and more demanding use cases for telecom operators and industrial verticals. Increased service flexibility adds complexity that must be addressed with novel management and orchestration systems. To address this, ANIARA will provide en-ablers and solutions for services in the domains of smart cities and manufacturing deployed and operated at the network edge(s). © 2021 Owner/Author.

Place, publisher, year, edition, pages
Association for Computing Machinery, Inc, 2021
Keywords
AI, container tech, edge comp, energy metering, orchestration, Containers, Manufacture, EDGE architectures, Edge clouds, Efficient power, Network edges, Service flexibility, Smart manufacturing, Telecom operators, Telecom systems, 5G mobile communication systems
National Category
Communication Systems
Identifiers
urn:nbn:se:ri:diva-53472 (URN)10.1145/3457388.3458622 (DOI)2-s2.0-85106011241 (Scopus ID)9781450384049 (ISBN)
Conference
18th ACM International Conference on Computing Frontiers 2021, CF 2021, 11 May 2021 through 13 May 2021
Available from: 2021-06-14 Created: 2021-06-14 Last updated: 2023-05-22Bibliographically approved
Marsh, I., Paladi, N., Abrahamsson, H., Gustafsson, J., Sjöberg, J., Johnsson, A., . . . Amiribesheli, M. (2021). Evolving 5G: ANIARA, an edge-cloud perspective. In: CF '21: Proceedings of the 18th ACM International Conference on Computing FrontiersMay 2021: . Paper presented at CF '21: 18th ACM International Conference on Computing FrontiersMay 2021 (pp. 206-207). Association for Computing Machinery
Open this publication in new window or tab >>Evolving 5G: ANIARA, an edge-cloud perspective
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2021 (English)In: CF '21: Proceedings of the 18th ACM International Conference on Computing FrontiersMay 2021, Association for Computing Machinery , 2021, p. 206-207Conference paper, Published paper (Refereed)
Abstract [en]

ANIARA (https://www.celticnext.eu/project-ai-net) attempts to enhance edge architectures for smart manufacturing and cities. AI automation, orchestrated lightweight containers, and efficient power usage are key components of this three-year project. Edge infrastructure, virtualization, and containerization in future telecom systems enable new and more demanding use cases for telecom operators and industrial verticals. Increased service flexibility adds complexity that must be addressed with novel management and orchestration systems. To address this, ANIARA will provide en-ablers and solutions for services in the domains of smart cities and manufacturing deployed and operated at the network edge(s).

Place, publisher, year, edition, pages
Association for Computing Machinery, 2021
National Category
Communication Systems
Identifiers
urn:nbn:se:ri:diva-58315 (URN)10.1145/3457388.3458622 (DOI)
Conference
CF '21: 18th ACM International Conference on Computing FrontiersMay 2021
Available from: 2022-01-24 Created: 2022-01-24 Last updated: 2023-05-22Bibliographically approved
Ahlgren, B., Grinnemo, K.-J., Abrahamsson, H., Brunstrom, A. & Hurtig, P. (2019). Latency-aware Multipath Scheduling in Information-centric Networks. In: Proceedings of the 15th Swedish National Computer Networking Workshop (SNCNW): . Paper presented at 15th Swedish National Computer Networking Workshop (SNCNW).
Open this publication in new window or tab >>Latency-aware Multipath Scheduling in Information-centric Networks
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2019 (English)In: Proceedings of the 15th Swedish National Computer Networking Workshop (SNCNW), 2019Conference paper, Published paper (Other academic)
Abstract [en]

We present the latency-aware multipath scheduler ZQTRTT that takes advantage of the multipath opportunities in information-centric networking. The goal of the scheduler is to use the (single) lowest latency path for transaction-oriented flows, and use multiple paths for bulk data flows. A new estimator called zero queue time ratio is used for scheduling over multiple paths. The objective is to distribute the flow over the paths so that the zero queue time ratio is equal on the paths, that is, so that each path is ‘pushed’ equally hard by the flow without creating unwanted queueing. We make an initial evaluation using simulation that shows that the scheduler meets our objectives.

National Category
Communication Systems
Identifiers
urn:nbn:se:ri:diva-39240 (URN)
Conference
15th Swedish National Computer Networking Workshop (SNCNW)
Projects
READY
Funder
Knowledge Foundation, 20130086ICT - The Next Generation
Available from: 2019-06-28 Created: 2019-06-28 Last updated: 2023-05-19Bibliographically approved
Abrahamsson, H., Ben Abdesslem, F., Ahlgren, B., Brunstrom, A., Marsh, I. & Björkman, M. (2018). Connected Vehicles in Cellular Networks: Multi-access versus Single-access Performance. In: : . Paper presented at 2nd Workshop on Mobile Network Measurement (MNM’18). , Article ID 8506559.
Open this publication in new window or tab >>Connected Vehicles in Cellular Networks: Multi-access versus Single-access Performance
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2018 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Connected vehicles can make roads traffic safer andmore efficient, but require the mobile networks to handle timecriticalapplications. Using the MONROE mobile broadbandmeasurement testbed we conduct a multi-access measurementstudy on buses. The objective is to understand what networkperformance connected vehicles can expect in today’s mobilenetworks, in terms of transaction times and availability. The goalis also to understand to what extent access to several operatorsin parallel can improve communication performance.In our measurement experiments we repeatedly transfer warningmessages from moving buses to a stationary server. Wetriplicate the messages and always perform three transactionsin parallel over three different cellular operators. This creates adataset with which we can compare the operators in an objectiveway and with which we can study the potential for multi-access.In this paper we use the triple-access dataset to evaluate singleaccessselection strategies, where one operator is chosen for eachtransaction. We show that if we have access to three operatorsand for each transaction choose the operator with best accesstechnology and best signal quality then we can significantlyimprove availability and transaction times compared to theindividual operators. The median transaction time improves with6% compared to the best single operator and with 61% comparedto the worst single operator. The 90-percentile transaction timeimproves with 23% compared to the best single operator andwith 65% compared to the worst single operator.

National Category
Communication Systems
Identifiers
urn:nbn:se:ri:diva-34311 (URN)10.23919/TMA.2018.8506559 (DOI)2-s2.0-85057241219 (Scopus ID)
Conference
2nd Workshop on Mobile Network Measurement (MNM’18)
Available from: 2018-07-30 Created: 2018-07-30 Last updated: 2023-05-19Bibliographically approved
Ahlgren, B., Hurtig, P., Abrahamsson, H., Grinnemo, K.-J. & Brunstrom, A. (2018). ICN congestion control for wireless links. In: : . Paper presented at 2018 IEEE Wireless Communications and Networking Conference (WCNC) (pp. 1-6).
Open this publication in new window or tab >>ICN congestion control for wireless links
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2018 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Information-centric networking (ICN) with its design around named-based forwarding and in-network caching holds great promises to become a key architecture for the future Internet. Many proposed ICN hop-by-hop congestion control schemes assume a fixed and known link capacity, which rarely - if ever - holds true for wireless links. Firstly, we demonstrate that although these congestion control schemes are able to fairly well utilise the available wireless link capacity, they greatly fail to keep the delay low. In fact, they essentially offer the same delay as in the case with no hop-by-hop, only end-to-end, congestion control. Secondly, we show that by complementing these schemes with an easy-to-implement, packet-train capacity estimator, we reduce the delay to a level significantly lower than what is obtained with only end-to-end congestion control, while still being able to keep the link utilisation at a high level.

Keywords
Internet, radio links, telecommunication congestion control, ICN congestion control, wireless links, information-centric networking, in-network caching, packet-train capacity estimator, end-to-end congestion control, named based forwarding, hop-by-hop congestion control, Wireless communication, Delays, Throughput, Bandwidth, Protocols, Estimation
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-34334 (URN)10.1109/WCNC.2018.8377396 (DOI)2-s2.0-85049217847 (Scopus ID)
Conference
2018 IEEE Wireless Communications and Networking Conference (WCNC)
Available from: 2018-08-07 Created: 2018-08-07 Last updated: 2023-05-19Bibliographically approved
Ben Abdesslem, F., Abrahamsson, H. & Ahlgren, B. (2018). Measuring Mobile Network Multi-Access for Time-Critical C-ITS Applications. In: TMA 2018 - Proceedings of the 2nd Network Traffic Measurement and Analysis Conference: . Paper presented at 2nd Network Traffic Measurement and Analysis Conference, TMA 2018, 26 June 2018 through 29 June 2018.
Open this publication in new window or tab >>Measuring Mobile Network Multi-Access for Time-Critical C-ITS Applications
2018 (English)In: TMA 2018 - Proceedings of the 2nd Network Traffic Measurement and Analysis Conference, 2018Conference paper, Published paper (Refereed)
Abstract [en]

Cooperative Intelligent Transport Systems (C-ITS) make road traffic safer and more efficient, but require the mobile networks to handle time-critical applications. While some applications may need new dedicated communications technologies such as IEEE 802.11p or 5G, other applications can use current cellular networks. This study evaluates the performance that connected vehicles can expect from existing networks, and estimates the potential gain of multi-access by simultaneously transmitting over several operators. We upload time-critical warning messages from buses in Sweden, and characterise transaction times and network availability. We conduct the experiments with different protocols: UDP, TCP, and HTTPS. Our results show that when using UDP, the median transaction time for sending a typical warning message is 135 ms. We also show that multi-access can bring this value down to 73 ms. For time-critical applications requiring transaction times under 200 ms, multi-access can increase availability of the network from to 57.4% to 92.0%.

Keywords
Intelligent systems, Intelligent vehicle highway systems, Mobile telecommunication systems, Traffic control, Wireless networks, Cellular network, Communications technology, Connected vehicles, Different protocols, Intelligent transport systems, ITS applications, Network availability, Time-critical applications, 5G mobile communication systems
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-36597 (URN)10.23919/TMA.2018.8506551 (DOI)2-s2.0-85057249133 (Scopus ID)9783903176096 (ISBN)
Conference
2nd Network Traffic Measurement and Analysis Conference, TMA 2018, 26 June 2018 through 29 June 2018
Available from: 2018-12-17 Created: 2018-12-17 Last updated: 2023-05-19Bibliographically approved
Abrahamsson, H., Ben Abdesslem, F., Ahlgren, B., Björkman, M., Brunstrom, A. & Marsh, I. (2018). Selecting Operator in 3G/4G Networks for Time-Critical C-ITS Applications. In: : . Paper presented at 14th Swedish National Computer Networking Workshop (SNCNW 2018).
Open this publication in new window or tab >>Selecting Operator in 3G/4G Networks for Time-Critical C-ITS Applications
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2018 (English)Conference paper, Published paper (Refereed)
National Category
Communication Systems
Identifiers
urn:nbn:se:ri:diva-34312 (URN)
Conference
14th Swedish National Computer Networking Workshop (SNCNW 2018)
Available from: 2018-07-30 Created: 2018-07-30 Last updated: 2023-05-19Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-8102-5773

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