post@simula.no

Thomas Dreibholz

Chief Research Engineer

Research objectives

The SimulaMet Interoperability lab (SMIL) support a wide range of research activities at SimulaMet, and will in particular address the following research areas:

Benchmark and improve time-sensitive networking technologies for 5G networks between base stations and edge computing for 5G.
Study and improve mechanisms for network slicing to ensure successful co-use of 5G networks for critical applications.
Study how legacy computers can be used to realize Cloud Radio Access Networks by using software defined radio and lower cost of deployment by moving functionality from hardware to software. Of particular interest is real-time scheduling of Cloud RAN workloads in edge data centres.
Study new 5G and IoT applications enabled by edge computing using features such as low latency, high throughput and quality of service guarantees combined with edge computing capabilities available in 5G cellular networks.
Develop and improve self-driving networks for fast recovery with technologies such as SDN, P4 and Network Function Virtualization in combination with machine learning of large-scale data analytics of the entire networked system.
Understand and improve mechanisms required to establish Robust cellular networks for reliable infrastructure for new user groups which relies on dependable networks.

Time sensitive networking

Traditionally, dedicated point-to-point connections using Common Public Radio Interface (CPRI) have been used to interconnect smart cellular antennas to base stations. In 5G, the main infrastructure vendors have proposed e-CPRI, based on the Ethernet standard. With Ethernet, one would expect to leverage traditional switches for aggregation and simultaneous data transport in addition to e-CPRI, but Ethernet and legacy switches are not built for the timing requirements of 5G. To overcome this problem, different technologies have been suggested to enable Time Sensitive Networking (TSN) with Ethernet as the transport technology. In this research activity, we study how TSN can be realized in 5G front haul networks, combining the requirements of synchronization, bound latency in combination with traditional best-effort packet transport. In the laboratory we collaborate with TransPacket for access to FPGA-based implementations of TSN using the Fusion network technology implemented in Xilinx FPGAs enabling 100 Gbit/s Ethernet transport aggregating 5G base stations using 10Gbit/s ethernet with guaranteed transport service.

TSN for Ethernet-based transport between base station and edge computers in 5G

Network slicing

In 5G networks, the concept of Network slicing enables different classes of applications to share the same physical network. 5G is expected to be able to handle applications like emergency networks, real-time industry applications in combination with supporting demanding multimedia applications for consumers. These requirements require ability to express and enforce Quality of Service requirements ranging from frequency resource allocation, 5G base station resource allocation, network quality of service and allocation of processing resources in edge computers.

Initial work has focused on SDN-based implementations using the opensource Open Air interface, and future work will extend this to network slicing in 5G-NR and 5G front-haul and back-haul network guarantees for network slicing.

Cloud Radio Access Networks (Cloud RAN)

Cloud RAN enable the use of general purpose computers placed in edge data centres for realizing virtualized radio functions by using software defined radio techniques to lower cost of deployment by moving functionality from hardware to software. Of a particular interest to our research group is real-time scheduling of Cloud RAN workloads, how to partition between real-time and non-real-time workloads in the Cloud RAN, and how to handle the strict requirements to enable services like Ultra Reliable Low Latency Communication (URLLC) which can enable new applications previously not possible in cellular networks. Vendors are already introducing Cloud RAN solutions, such as the Nokia AirScale CloudRAN , the 4G/5G C-RAN architecture from Ericsson and 5G oriented C-RAN solutions from Huawei. It is of a particular interest to study if such network architectures can be realized in a multi-vendor environment. At what level should interoperability be ensured? Can Virtual Network Functions from different vendors run in the same edge computer environment?

New 5G and IoT applications enabled by edge computing

With edge computing deployed in the distributed 5G networks, new 5G and IoT applications can be made possible since response times can be guaranteed, and computing resources can be made available close to the application. An example is the real-time application of collision avoidance for cars sharing their sensor data with a local edge data center which can execute collision avoidance algorithms within specified time deadlines to provide drivers or self-driving vehicles with time-critical information to avoid collision. Other applications like games using augmented reality and real-time collaboration in industrial applications can be enabled by low latency and high throughput communication service with processing in edge data centres. Finally, IoT sensors with very low power consumption can leverage high sensitivity 5G NR capabilities to provide very long battery life for embedded applications. In SMIL, we will collaborate with other research groups and the 5G industry to investigate applications previously not possible in cellular networks and suggest improvements to applications and networks.

Self-driving Networks

The complexity of configuration and adjustment of telecommunication networks to respond to rapid changes in demand has led to the vision of Self-driving networks which measure, analyze and control themselves in an automated manner. Self-driving networks can react to changes in the environment (e.g., demand), while exploiting existing flexibilities to optimize themselves. Furthermore, the advent of large-scale machine learning can also benefit self-driving networks and over time develop to faster reconfiguration and more reliable operation compared to manual configuration by human operators, see for example the paper Why (and How) Networks Should Run Themselves for an in-depth discussion.

This method is of particular interest in 5G to ensure rapid reconfiguration in case of failure which requires automated response to demand, changes in geographic load in the network, change in network capacity and loss of connectivity with minimal impact for critical applications. The requirement for reconfiguration can also be used for business purposes, for example optimized use of software licenses, where an operator can install hardware at all relevant locations but deploy software licenses only for operation of a subset of this hardware based on actual demand and moved with users. This research area is closely related to Software Defined Networking which until recently has focused mostly on the data plane with technologies such as OpenFlow and Netconf/Yang.

Main components of an OpenFlow switch (OpenFlow Switch specification)

Recent developments such as the Programming Protocol-independent Packet Processors language (P4) has enabled software control also of the data plane which opens for software defined processing in the actual packet flow. In SMIL, we plan to leverage these advances together from SDN controllers such as OpenDaylight to enable Self-driving networks for access and transport networks for 5G. In the laboratory, we will use the latest MX-series routers from Juniper Networks with P4 capabilites to explore self-driving networks for 5G.

Robust cellular networks

New user groups are encouraged to share a common infrastructure to save cost and leverage state of the art technologies. This trend increases the requirements of robustness of the underlying architecture since our society relies not only on critical consumer services like communication services, banking, shopping and logistics, but also applications traditionally served by dedicated networks such as military, emergency (e.g. TETRA) and railroad signalling networks (e.g. GSM-R) which all consider 5G as their network infrastructure in the future.

We believe Heterogeneous infrastructure has several benefits to ensure interoperability and open standards in 5G but this requirement also adds to the complexity of the network since different vendors may rely on different network structures, and different communication protocols even if they are defined by standard bodies such as 3GPP. When the goal of heterogenous infrastructure is added to requirements from new users, we can see that 5G represents very demanding requirements for the cellular operators and the network infrastructure vendors.

Expectation of heterogeneous infrastructure and demands from new users groups in 5G place demanding requirements for interoperability and robustness.

SimulaMet Centre for Resilient Networks and Applications have studied this topic over many years in fixed networks, in 4G cellular networks and for IoT applications. With the new laboratory, we will extend our studies to 5G New Radio and will also address how to provide robustness of the 5G core network by reducing the dependency for a centralized 5G infrastructure by virtualization.

Department:

The Center for Resilient Networks and Applications

Afilliation:

Communication Systems

Publications for SMIL: SimulaMet Interoperability Lab

2023

Journal Article

Towards a Lightweight Task Scheduling Framework for Cloud and Edge Platform

Internet of Things; Engineering Cyber Physical Human Systems (2023).

Status: Accepted

Abstract

Mobile devices are becoming ubiquitous in our daily lives, but they have limited computational capacity. Thanks to the advancement in the network infrastructure, task offloading from resource-constrained devices to the near edge and the cloud becomes possible and advantageous. Complete task offloading is now possible to almost limitless computing resources of public cloud platforms. Generally, the edge computing resources support latency-sensitive applications with limited computing resources, while the cloud supports latency-tolerant applications. This paper proposes one lightweight task-scheduling framework from cloud service provider perspective, for applications using both cloud and edge platforms. Here, the challenge is using edge and cloud resources efficiently when necessary. Such decisions have to be made quickly, with a small management overhead. Our framework aims at solving two research questions. They are: i) How to distribute tasks to the edge resource pools and multi-clouds? ii) How to manage these resource pools effectively with low overheads? To answer these two questions, we examine the performance of our proposed framework based on Reliable Server Pooling (RSerPool). We have shown via simulations that RSerPool, with the correct usage and configuration of pool member selection policies, can accomplish the cloud/edge setup resource selection task with a small overhead.

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, NorNet, SMIL: SimulaMet Interoperability Lab
Publication Type	Journal Article
Year of Publication	2023
Journal	Internet of Things; Engineering Cyber Physical Human Systems
Publisher	Elsevier
Keywords	Cloud computing, Edge Computing, Reliable Server Pooling (RSerPool), Resource Pools, Task Scheduling

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

2022

Journal Article

Secure Embedded Living: Towards a Self-contained User Data Preserving Framework

IEEE Communications Magazine 60, no. 11 (2022): 74-80.

Status: Published

Abstract

Smart living represents the hardware-software co-inhabiting with humans for better living standards and improved well-being. Here, hardware monitors human activities (by collecting data) specific to a context. Such data can be processed to offer context-specific valuable insights. Such insights can be used for optimising the well-being, living experience and energy cost of smart homes. This paper proposes a Secure Embedded Living Framework (SELF) that enforces a privacy-preserving data control mechanism by integrating multiple technologies, such as Internet-of-thing, cloud/fog platform, machine learning and blockchain. The primary aim of the SELF is to allow the user to retain more control of its data.

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, NorNet, SMIL: SimulaMet Interoperability Lab, GAIA, The Center for Resilient Networks and Applications
Publication Type	Journal Article
Year of Publication	2022
Journal	IEEE Communications Magazine
Volume	60
Issue	11
Pagination	74–80
Date Published	11/2022
Publisher	IEEE
ISSN	0163-6804
Keywords	blockchain, Cloud, Data, IoTs, Security, User
DOI	10.1109/MCOM.001.2200165

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

F. I. Michelinakis, J. S. Pujol-Roig, S. Malacarne, M. Xie, T. Dreibholz, S. Majumdar, W. Y. Poe, G. Patounas, C. Guerrero, A. M. Elmokashfi et al.

AI Anomaly Detection for Cloudified Mobile Core Architectures

Transactions on Network and Service Management (2022).

Status: Published

Abstract

IT systems monitoring is a crucial process for managing and orchestrating network resources, allowing network providers to rapidly detect and react to most impediment causing network degradation. However, the high growth in size and complexity of current operational networks (2022) demands new solutions to process huge amounts of data (including alarms) reliably and swiftly. Further, as the network becomes progressively more virtualized, the hosting of nfv on cloud environments adds a magnitude of possible bottlenecks outside the control of the service owners. In this paper, we propose two deep learning anomaly detection solutions that leverage service exposure and apply it to automate the detection of service degradation and root cause discovery in a cloudified mobile network that is orchestrated by ETSI OSM. A testbed is built to validate these AI models. The testbed collects monitoring data from the OSM monitoring module, which is then exposed to the external AI anomaly detection modules, tuned to identify the anomalies and the network services causing them. The deep learning solutions are tested using various artificially induced bottlenecks. The AI solutions are shown to correctly detect anomalies and identify the network components involved in the bottlenecks, with certain limitations in a particular type of bottlenecks. A discussion of the right monitoring tools to identify concrete bottlenecks is provided.

Afilliation	Communication Systems
Project(s)	5G-VINNI: 5G Verticals INNovation Infrastructure , The Center for Resilient Networks and Applications, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, NorNet, SMIL: SimulaMet Interoperability Lab
Publication Type	Journal Article
Year of Publication	2022
Journal	Transactions on Network and Service Management
Date Published	08/2022
Publisher	IEEE
Place Published	Los Alamitos, California/U.S.A.
ISSN	1932-4537
Keywords	5G, AI, Anomaly detection, Autoencoders, deep learning, Mobile networks, Smart Networks
DOI	10.1109/TNSM.2022.3203246

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Foivos Ioannis Michelinakis

Research Scientist

Georgios Patounas

External PhD student

gpatounas@simula.no

Proceedings, refereed

Load Distribution for Mobile Edge Computing with Reliable Server Pooling

In Proceedings of the 4th International Workshop on Recent Advances for Multi-Clouds and Mobile Edge Computing (M2EC) in conjunction with the 36th International Conference on Advanced Information Networking and Applications (AINA). Sydney, New South Wales/Australia: Springer, 2022.

Status: Accepted

Abstract

Energy-efficient computing model is a popular choice for high performance as well as throughput oriented computing ecosystems. Mobile (computing) devices are becoming increasingly ubiquitous to our computing domain, but with limited resources (true both for computation as well as for energy). Hence, workload offloading from resource-constrained mobile devices to the Edge and maybe (later) to the cloud become necessary as well as useful. Thanks to the persistent technical breakthroughs in global wireless standards (or in mobile networks) together with the almost limitless amount of resources in public cloud platforms, workload offloading is possible and cheaper. In such scenarios, Mobile Edge Computing (MEC) resources could be provisioned in proximity to the users for supporting latency-sensitive applications. Here, two relevant problems could be: i) How to distribute workload to the resource pools of MEC as well as public (multi-)clouds? ii) How to manage such resource pools effectively? To answer these problems in this paper, we examine the performance of our proposed approach using the Reliable Server Pooling (RSerPool) framework in more detail. We also have outlined the resource pool management policies to effectively use RSerPool for workload offloading from mobile devices into the cloud/MEC ecosystem.

Afilliation	Communication Systems
Project(s)	5G-VINNI: 5G Verticals INNovation Infrastructure , NorNet, The Center for Resilient Networks and Applications, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, SMIL: SimulaMet Interoperability Lab, MELODIC: Multi-cloud Execution-ware for Large-scale Optimised Data-Intensive Computing
Publication Type	Proceedings, refereed
Year of Publication	2022
Conference Name	Proceedings of the 4th International Workshop on Recent Advances for Multi-Clouds and Mobile Edge Computing (M2EC) in conjunction with the 36th International Conference on Advanced Information Networking and Applications (AINA)
Publisher	Springer
Place Published	Sydney, New South Wales/Australia
Keywords	Cloud computing, Load Distribution, Mobile Edge Computing (MEC), Multi-Cloud Computing, Reliable Server Pooling (RSerPool), Serverless Computing

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Talks, contributed

T. Dreibholz, A. H. M. Ahmed, M. Fida, A. F. Ocampo and F. I. Michelinakis

Detecting Issues with In-Band Telemetry in OSM-Orchestrated Core Networks

In Virtual. Virtual: ETSI, 2022.

Status: Published

Abstract

Open Source MANO is a helpful tool to manage and orchestrate the instantiation of core network setups, like Network Service (NS) instances of our SimulaMet OpenAirInterface Virtual Network Function (VNF) for Enhanced Packet Cores (EPC). We furthermore extended our NS with VNF instances of Programming Protocol-independent Packet Processors (P4) switches, in order to allow for in-band telemetry. With in-band telemetry, it is possible to flexibly add, process, and remove telemetry information to traffic within the packet core, in order to allow for fine-granular evaluation of the system performance and the users' experienced quality of service. In our presentation and demo, we would like to provide an overview of our ongoing work on P4-based in-band telemetry in an OSM-orchestrated 4G core, which is used for detecting performance problems and anomalies in the network based on machine learning. We would furthermore like to demonstrate the details of our setup to the audience in a live demo.

Afilliation	Communication Systems
Project(s)	SMIL: SimulaMet Interoperability Lab, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, The Center for Resilient Networks and Applications, NorNet, 5G-VINNI: 5G Verticals INNovation Infrastructure
Publication Type	Talks, contributed
Year of Publication	2022
Location of Talk	Virtual
Publisher	ETSI
Place Published	Virtual
Type of Talk	Demo presentation
Keywords	Anomaly detection, Network Function Virtualisation (NFV), Open Source MANO (OSM), P4, Telemetry
URL	http://osm-download.etsi.org/ftp/osm-11.0-eleven/OSM13_Ecosystem_Day/OSM...

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Technical reports

A. M. Elmokashfi, A. Kvalbein, A. S. Al-Selwi, F. I. Michelinakis and T. Dreibholz

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

Abstract

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

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Foivos Ioannis Michelinakis

Research Scientist

Anas Saeed Al-Selwi

Senior Research Engineer

anasal@simula.no

Amund Kvalbein

Adjunct Chief Research Scientist

amundk@simula.no

2021

Book

M. A. Abdulkadir, Ö. Alay, A. Alexiou, M. Anastasopoulos, K. Antevski, E. Aumayr, D. Ayed, J. Baranda, R. Behravesh, C. Benzaid et al.

AI and ML – Enablers for Beyond 5G Networks

Online: 5G PPP Technology Board, 2021.

Status: Published

Abstract

This white paper on AI and ML as enablers of beyond 5G (B5G) networks is based on contributions from almost 20 5G PPP projects, coordinated through the 5G PPP Technology Board, that research, implement and validate 5G and B5G network systems. The paper introduces the main relevant mechanisms in Artificial Intelligence (AI) and Machine Learning (ML), currently investigated and exploited for enhancing 5G and B5G networks.

Afilliation	Communication Systems
Project(s)	SMIL: SimulaMet Interoperability Lab, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, 5G-VINNI: 5G Verticals INNovation Infrastructure , NorNet, The Center for Resilient Networks and Applications
Publication Type	Book
Year of Publication	2021
Date Published	05/2021
Publisher	5G PPP Technology Board
Place Published	Online
URL	https://5g-ppp.eu/wp-content/uploads/2021/05/AI-MLforNetworks-v1-0.pdf
DOI	10.5281/zenodo.429989

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Journal Article

M. Chen, M. W. Raza, T. Dreibholz, X. Zhou and Y. Tan

A Multi-Parameter Comprehensive Optimized Algorithm for MPTCP Networks

Electronics 10, no. 16 (2021).

Status: Published

Abstract

With the increasing deployment of the Multi-Path Transmission Control Protocol (MPTCP) in heterogeneous network setups, there is a need to understand how its performance is affected in practice both by traditional factors such as round-trip time measurements, buffer predictive modelling and by calculating the impact factors of network subflows. Studies have shown that path management and packet scheduling have a large effect on overall performance and required limited resources with different congestion control parameters. Unfortunately, most of the previous studies have focused almost exclusively on the improvement of a single parameter, without a holistic view. To deal with this issue effectively, this paper puts forward a Multi-Parameter Comprehensive Optimized Algorithm (MPCOA), which can find the smaller buffer size and select the appropriate congestion control and path management algorithm on the premise of ensuring larger throughput. Experiments of three scenarios show that MPCOA can save the buffer space and subflow resources, and achieve high throughput. Meanwhile, a set of quantitative improvement results given by MPCOA is convenient for us to evaluate the quality of MPTCP network, and provide reference for our ongoing future work, like for 4G/5G, Internet of Things and Star Link networks.

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications, NorNet, SMIL: SimulaMet Interoperability Lab, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering
Publication Type	Journal Article
Year of Publication	2021
Journal	Electronics
Volume	10
Issue	16
Date Published	08/2021
Publisher	MDPI
Place Published	Basel/Switzerland
ISSN	2079-9292
Keywords	Buffer Size, congestion control, MPCOA, Multi-Path TCP (MPTCP), Path Management
URL	https://www.mdpi.com/2079-9292/10/16/1942/pdf
DOI	10.3390/electronics10161942

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Proceedings, refereed

A Demo of Workload Offloading in Mobile Edge Computing Using the Reliable Server Pooling Framework

In Proceedings of the 46th IEEE Conference on Local Computer Networks (LCN). Edmonton, Alberta, Canada: IEEE Computer Society, 2021.

Status: Published

Abstract

Mobile Edge Computing (MEC) places cloud resources nearby the user, to provide support for latency-sensitive applications. Offloading workload from resource-constrained mobile devices (such as smartphones) into the cloud ecosystem is becoming increasingly popular. In this demonstration, we show how to deploy a mobile network (with OpenAirInterface and Open Source MANO), as well as to adapt the Reliable Server Pooling (RSerPool) framework to efficiently manage MEC as well as multi-cloud resources to run an interactive demo application.

Afilliation	Communication Systems
Project(s)	SMIL: SimulaMet Interoperability Lab, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, MELODIC: Multi-cloud Execution-ware for Large-scale Optimised Data-Intensive Computing, 5G-VINNI: 5G Verticals INNovation Infrastructure , The Center for Resilient Networks and Applications, NorNet
Publication Type	Proceedings, refereed
Year of Publication	2021
Conference Name	Proceedings of the 46th IEEE Conference on Local Computer Networks (LCN)
Date Published	10/2021
Publisher	IEEE Computer Society
Place Published	Edmonton, Alberta, Canada
Keywords	Demonstration, Evolved Packet Core (EPC), Mobile Edge Computing (MEC), Multi-Cloud Computing, Network Function Virtualisation (NFV), Reliable Server Pooling (RSerPool)
URL	https://www.ieeelcn.org/lcn46demos/Demo_4_1570754367.pdf

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

M. Xie, F. I. Michelinakis, T. Dreibholz, J. Pujol-Roig, S. Malacarne, S. Majumdar, W. Y. Poe and A. Elmokashfi

An Exposed Closed-Loop Model for Customer-Driven Service Assurance Automation

In 2021 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit). Porto, Portugal: IEEE Computer Society, 2021.

Status: Published

Abstract

Artificial Intelligence (AI) is widely applied in telecommunications to enable zero-touch automation in network operation and service management. Due to the high complexity, deploying advanced AI mechanisms is not always feasible inside the operator’s network domains. Instead, via service exposures, it becomes possible for vertical customers to integrate their external AI solutions with the network and service management system to form a closed loop (CL) and contribute to the automation process. In this paper, we propose an exposed CL model based on service exposure and apply it to automate service assurance tasks like autoscaling in a network function virtualization (NFV) system orchestrated by ETSI Open Source MANO (OSM). A testbed is built to validate the model. It collects monitoring data from the OSM monitoring module and external monitoring tools. Vertical customers drive and customize their AI solutions to aggregate these data sets and run analytics to detect and predict anomalies prepared for scaling. Preliminary analysis demonstrates the added values of customer-driven monitoring and analysis via the exposed CL.

Afilliation	Communication Systems
Project(s)	NorNet, The Center for Resilient Networks and Applications, SMIL: SimulaMet Interoperability Lab, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, 5G-VINNI: 5G Verticals INNovation Infrastructure
Publication Type	Proceedings, refereed
Year of Publication	2021
Conference Name	2021 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit)
Pagination	419–424
Date Published	06/2021
Publisher	IEEE Computer Society
Place Published	Porto, Portugal
ISBN Number	978-1-6654-1526-2
Keywords	Autonomous Management, Closed Loop, Machine learning, Monitoring, Service Exposure
DOI	10.1109/EuCNC/6GSummit51104.2021.9482533

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Foivos Ioannis Michelinakis

Research Scientist

The Center for Resilient Networks and Applications

Contact person(s):

Haakon Bryhni

Head of Department

Research Professor

The Center for Resilient Networks and Applications (CRNA) was established in 2014 as a response to modern society’s massive and increasing dependability on applications running on top of the Internet. CRNA focuses on the robustness and security of ICT infrastructures, by which we mean that applications should continue to function at the best possible level of quality and security, even in the presence of technical failures, unplanned excessive load, design and implementation flaws in specific components, human error and malicious intent.

The Center receives base funding from the Norwegian Ministry of Transport and Communications. The Ministry has given the Center specific responsibilities through a mandate that includes operating an infrastructure for monitoring the state of the Norwegian telecommunications infrastructure, in particular the mobile broadband networks, and publishing an annual report on that. There is a tight integration between CRNA and Simula@UiB. Whereas CRNA concentrates on safety aspects of digital infrastructures, Simula@UiB has deep expertise in security. CRNA has also established partnerships with mobile operators and relevant stakeholders.

During the past few years, CRNA has made a number of key scientific and societal contributions. These include contributions to education and science through the education of master and PhD students and the publication of numerous articles in high impact and respected venues. CRNA has also contributed to informing policy makers and network operators on issues related to digital vulnerability and network performance.

Mandate for CRNA

The Center will undertake long-term research and innovation at a high international level, on robustness and reliability of communications networks and applications. The Center will educate experts on the doctoral and magisterial levels in cooperation with universities and university colleges.

Furthermore, the Center will have responsibility for maintaining and running a research infrastructure for measuring the Norwegian telecommunications network. This research infrastructure will be made available for research groups at universities and university colleges. The Center wishes to provide measurement and monitoring services for regions, municipalities, industry and public enterprises in Norway. The Center will produce an annual report on the state of the Norwegian communications infrastructure to the Norwegian Post and Telecommunications Authority.

The Center's ambition is to be the nationally leading research institution within research on reliable ICT infrastructures, and collaborate with other research institutions that have expertise that will not be naturally covered by the Center. It will be expected that the Center collects additional funding from sources such as the Norwegian Research Council. EU research programmes, industry and relevant parts of the public administration.

The Center is part of Simula Metropolitan CDE organisational structure. CRNA will perform annual management and dialogue meetings with the Norwegian Ministry of Transport and Communication and the Norwegian Post and Telecommunications Authority. The work performed at the Center will be evaluated by the Research Council every five years. The criteria for evaluation will be related to scientific quality and relevance to society. The annual budgets for the Center are dependent on grants from the state budget and will be considered on the background of the evaluation results

Publications for The Center for Resilient Networks and Applications

2023

Journal Article

Towards a Lightweight Task Scheduling Framework for Cloud and Edge Platform

Internet of Things; Engineering Cyber Physical Human Systems (2023).

Status: Accepted

Abstract

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, NorNet, SMIL: SimulaMet Interoperability Lab
Publication Type	Journal Article
Year of Publication	2023
Journal	Internet of Things; Engineering Cyber Physical Human Systems
Publisher	Elsevier
Keywords	Cloud computing, Edge Computing, Reliable Server Pooling (RSerPool), Resource Pools, Task Scheduling

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

2022

Book Chapter

K. Friis and O. Lysne

5G-sikkerhet: Norge mellom stormaktene

In Digitalisering og internasjonal politikk. Universitetsforlaget, 2022.

Status: Published

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications
Publication Type	Book Chapter
Year of Publication	2022
Book Title	Digitalisering og internasjonal politikk
Chapter	7
Date Published	01/2022
Publisher	Universitetsforlaget
ISBN Number	9788215052557

Contact person(s) for publication:

Olav Lysne

Professor

Director at Simula Metropolitan

olavly@simula.no

Journal Article

Secure Embedded Living: Towards a Self-contained User Data Preserving Framework

IEEE Communications Magazine 60, no. 11 (2022): 74-80.

Status: Published

Abstract

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, NorNet, SMIL: SimulaMet Interoperability Lab, GAIA, The Center for Resilient Networks and Applications
Publication Type	Journal Article
Year of Publication	2022
Journal	IEEE Communications Magazine
Volume	60
Issue	11
Pagination	74–80
Date Published	11/2022
Publisher	IEEE
ISSN	0163-6804
Keywords	blockchain, Cloud, Data, IoTs, Security, User
DOI	10.1109/MCOM.001.2200165

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

F. I. Michelinakis, J. S. Pujol-Roig, S. Malacarne, M. Xie, T. Dreibholz, S. Majumdar, W. Y. Poe, G. Patounas, C. Guerrero, A. M. Elmokashfi et al.

AI Anomaly Detection for Cloudified Mobile Core Architectures

Transactions on Network and Service Management (2022).

Status: Published

Abstract

Afilliation	Communication Systems
Project(s)	5G-VINNI: 5G Verticals INNovation Infrastructure , The Center for Resilient Networks and Applications, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, NorNet, SMIL: SimulaMet Interoperability Lab
Publication Type	Journal Article
Year of Publication	2022
Journal	Transactions on Network and Service Management
Date Published	08/2022
Publisher	IEEE
Place Published	Los Alamitos, California/U.S.A.
ISSN	1932-4537
Keywords	5G, AI, Anomaly detection, Autoencoders, deep learning, Mobile networks, Smart Networks
DOI	10.1109/TNSM.2022.3203246

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Foivos Ioannis Michelinakis

Research Scientist

Georgios Patounas

External PhD student

gpatounas@simula.no

A. H. M. Ahmed and A. Elmokashfi

ICRAN: Intelligent Control for Self-driving RAN based on Deep Reinforcement Learning

IEEE Transactions on Network and Service Management (2022): 1.

Status: Published

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications
Publication Type	Journal Article
Year of Publication	2022
Journal	IEEE Transactions on Network and Service Management
Pagination	1 - 1
Date Published	Jan-01-2022
Publisher	IEEE
URL	https://ieeexplore.ieee.org/document/9831432/http://xplorestaging.ieee.o...
DOI	10.1109/TNSM.2022.3191746

D. A. Hayes, D. Ros, Ö. Alay, P. Teymoori and T. M. Vister

Investigating Predictive Model-Based Control to Achieve Reliable Consistent Multipath mmWave Communication

Computer Communications 194 (2022): 29-43.

Status: Published

Abstract

Millimeter-wave (mmWave) radio is a key building block in 5G and beyond cellular networks. However, mmWave channels are very sensitive to environmental conditions and depend on Line-of-Sight connections to provide very high data rates. Achieving reliable, consistent communication — i.e., a steady link rate together with low delay — over mmWave links is therefore a challenging problem. The goal of this work is to explore the use of predictive control to manage and simultaneously use multiple available mmWave paths to achieve reliable consistent communication by means of a multipath proxy. We investigate transient solutions of Markov Modulated Fluid Queues (MMFQ) to model the short-term evolution of the proxy’s packet queue, consistent with the use of Markovian models to capture the behavior of mmWave channel blocking. We propose a combination of models that can be solved using newly proposed matrix-analytic techniques in a timely enough manner for use in real-time control. This gives us a prediction, over a short time horizon, of either proxy queue distributions or probabilities of reaching particular proxy buffer levels. Thus, it enables the proxy to make preemptive path decisions in order to maintain a desired Quality of Service. A proof-of-concept simulation study demonstrates the efficacy of our proposed MMFQ-based predictive approach over both static and purely reactive control approaches. Further, we explore the potential benefits of a hybrid approach to path management, combining both predictive and reactive control. This can allow the controller to cater for unforeseen events that cannot be forecast by the predictive controller, mitigating the resulting extra queuing and corresponding delay spikes.

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications, Department of Mobile Systems and Analytics
Publication Type	Journal Article
Year of Publication	2022
Journal	Computer Communications
Volume	194
Pagination	29--43
Date Published	10/2022
Publisher	Elsevier
Keywords	5G/6G/+, mmWave, Mobile networks, Multipath, Proxy
URL	https://www.sciencedirect.com/science/article/pii/S0140366422002596
DOI	10.1016/j.comcom.2022.07.011

Contact person(s) for publication:

David Hayes

Postdoctoral Fellow

davidh@simula.no

Proceedings, refereed

Towards a Privacy Preserving Data Flow Control via Packet Header Marking

In Proceedings of the 24th International Conference on High Performance Computing, Data, and Analytics (HPCC). Chengdu, Sichuan/People's Republic of China, 2022.

Status: Published

Abstract

{Computing infrastructure is becoming ubiquitous thanks to the advancement in computing and the network domain. Reliable network communication is essential to offer good quality services, but it is not trivial. There are privacy concerns. Metadata may leak user information even if traffic is encrypted. Some countries have data privacy preserving-related regulations, but end-users cannot control through which path, networks, and hardware their data packets should travel. Even worse, the user cannot declare their privacy preferences. This paper presents an approach to tackle such privacy issues through data privacy-aware routing. The user can specify their preferences for packet routing using marking and filtering. Routing can work according to such specifications. It is implemented by P4, allowing a vendor-independent realisation with standard off-the-shelf hardware and open-source software components. We presented the initial experimental results of a proof-of-concept run on a unified cloud/fog research testbed.}

Afilliation	Communication Systems
Project(s)	NorNet, Simula Metropolitan Center for Digital Engineering, Simula Metropolitan Center for Digital Engineering, The Center for Resilient Networks and Applications, GAIA
Publication Type	Proceedings, refereed
Year of Publication	2022
Conference Name	Proceedings of the 24th International Conference on High Performance Computing, Data, and Analytics (HPCC)
Place Published	Chengdu, Sichuan/People's Republic of China
Keywords	Cloud, Data, Fog, P4, Packets, Privacy, Routing

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Towards a Blockchain and Fog-Based Proactive Data Distribution Framework for ICN

In Proceedings of the International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT). Sendai/Japan, 2022.

Status: Published

Abstract

Most of today's IP traffic is cloud traffic. Due to a vast, complex and non-transparent Internet infrastructure, securely accessing and delegating data is not a trivial task. Existing technologies of Information-Centric Networking (ICN) make content distribution and access easy while primarily relying on the existing cloud-based security features. The primary aim of ICN is to make data independent of its storage location and application. ICN builds upon traditional distributed computing, which means ICN platforms also can suffer from similar data security issues as distributed computing platforms. We present our ongoing work to develop a secure, proactive data distribution framework. The framework answers the research question, i.e., How to extend online data protection with a secure data distribution model for the ICN platform? Our framework adds a data protection layer over the content distribution network, using blockchain and relying on the fog to distribute the contents with low latency. Our framework is different from the existing works in multiple aspects, such as i) data are primarily distributed from the fog nodes, ii) blockchain is used to protect data and iii) blockchain allows statistical and other information sharing among stakeholders (such as content creators) following access rights. Sharing statistics about content distribution activity can bring transparency and trustworthiness among the stakeholders, including the subscribers, into the ICN platforms. We showed such a framework is possible by presenting initial performance results and our reflections while implementing it on a cloud/fog research testbed.

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, GAIA
Publication Type	Proceedings, refereed
Year of Publication	2022
Conference Name	Proceedings of the International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT)
Place Published	Sendai/Japan
Keywords	blockchain, Data, Distribution, Fog, ICN, Protection

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

A. H. M. Ahmed and A. Elmokashfi

Deep reinforcement learning-based control framework for radio access networks

In ACM MobiCom '22: The 28th Annual International Conference on Mobile Computing and NetworkingProceedings of the 28th Annual International Conference on Mobile Computing And Networking. Sydney NSW AustraliaNew York, NY, USA: ACM, 2022.

Status: Published

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications
Publication Type	Proceedings, refereed
Year of Publication	2022
Conference Name	ACM MobiCom '22: The 28th Annual International Conference on Mobile Computing and NetworkingProceedings of the 28th Annual International Conference on Mobile Computing And Networking
Publisher	ACM
Place Published	Sydney NSW AustraliaNew York, NY, USA
ISBN Number	9781450391818
URL	https://dl.acm.org/doi/proceedings/10.1145/3495243https://dl.acm.org/doi...
DOI	10.1145/349524310.1145/3495243.3558276

Contact person(s) for publication:

Azza Hassan Mohamed Ahmed

Postdoctoral Fellow

azza@simula.no

A. Arouna, S. Bjørnstad, S. J. Ryan, T. Dreibholz, R. Sobia and A. Elmokashfi

Network Path Integrity Verification using Deterministic Delay Measurements

In TMA CONFERENCE 2022. IEEE/IFIP, 2022.

Status: Published

Abstract

With the intuition that every device on the data path contributes to the end-to-end delay, we propose a simple and deterministic measurement-based approach for detecting the insertion of a layer-2 switch on the data path of a network operator.
For this purpose, we use commodity hardware and the standard ping tool for collecting ICMP RTTs.
To minimise inaccuracies in the measurements, we increase timing determinism on both ICMP source and target by using a real-time kernel on both, a dedicated source (a Linux server) and target (an RPI4 with custom image). Additionally, we manipulate real-time attributes for prioritising the ping process. By using this approach on different loaded networks: lab, campus network, research and education network and an ISP, we are able to reliably detect that a switch was added at the end of the path or within it.
Our method yields an excellent performance on networks with considerable cross traffic as well as lightly loaded networks.

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications, GAIA
Publication Type	Proceedings, refereed
Year of Publication	2022
Conference Name	TMA CONFERENCE 2022
Publisher	IEEE/IFIP
ISBN Number	978-3-903176-47-8
Keywords	alien switch, deterministic RTT, network

Contact person(s) for publication:

Alfred Arouna

PhD Student

Alfred@simula.no

Steinar Bjørnstad

Adjunct Senior Research Scientist

steinar@simula.no

Publications

2022

Proceedings, refereed

J. M. Evang, A. H. M. Ahmed, A. Elmokashfi and H. Bryhni

Crosslayer Network Outage Classification Using Machine Learning

In Applied Networking Research Workshop (ANRW). Proceedings of the Workshop on Applied Networking Research, 2022.

Status: Published

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications
Publication Type	Proceedings, refereed
Year of Publication	2022
Conference Name	Applied Networking Research Workshop (ANRW)
Publisher	Proceedings of the Workshop on Applied Networking Research

Public outreach

O. Lysne and H. Bryhni

Hvor ble det av cyberkrigen?

Aftenposten, 2022.

Status: Published

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications
Publication Type	Public outreach
Year of Publication	2022
Publisher	Aftenposten

O. Lysne and H. Bryhni

Hvorfor venter vi «skandale» hver gang it-sikkerheten sjekkes i staten?

aftenposten.no: Dagens Næringsliv, 2022.

Status: Published

Abstract

Det eneste som kan gi bedre datasikkerhet i staten raskt, er at politikerne tar beslutninger som går på tvers av sektorene. Mer ansvar og myndighet til NSM og Justisdepartementet er en mulig løsning.

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering, GAIA
Publication Type	Public outreach
Year of Publication	2022
Date Published	11/2022
Publisher	Dagens Næringsliv
Place Published	aftenposten.no
Type of Work	Popular science
Keywords	Security
URL	https://www.dn.no/innlegg/datasikkerhet/it-sikkerhet/cyberangrep/hvorfor...

Contact person(s) for publication:

Haakon Bryhni

Head of Department

Research Professor

O. Lysne and H. Bryhni

What happened to the cyberwar

In Hvor ble det av cyberkrigen? https://www.aftenposten.no/meninger/debatt/i/nWKolo/hvor-ble-det-av-cyberkrigen: Aftenposten, 2022.

Status: Published

Abstract

Professor Olav Lysne, Director of SimulaMet and Haakon Bryhni, head of CRNA at SimulaMet recently published an op-ed in Aftenposten discussing cyber warfare in Ukraine.

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering, GAIA
Publication Type	Public outreach
Year of Publication	2022
Secondary Title	Hvor ble det av cyberkrigen?
Date Published	03/2022
Publisher	Aftenposten
Place Published	https://www.aftenposten.no/meninger/debatt/i/nWKolo/hvor-ble-det-av-cyberkrigen
Type of Work	Popular science article
Keywords	Applications, cyberwar, Internet, reliable, Security
URL	https://www.simulamet.no/content/what-happened-cyberwar

Contact person(s) for publication:

Haakon Bryhni

Head of Department

Research Professor

Talks, invited

Reliability and security in future telecommunication networks

In Scandic hotel, Fornebu. Inside Telecom conference: Simula Metropolitan Center for Digital Engineering, Centre for Resilient Networks and Applications (CRNA), 2022.

Status: Published

Abstract

The talk address Reliability and security in future telecommunication networks reporting work from SimulaMet SMIL laboratory and the GAIA-project, explaining dependencies and vulnerabilities of current telecommunication networks and applications and how to address these to form robust and reliable networks and services.

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering, GAIA
Publication Type	Talks, invited
Year of Publication	2022
Location of Talk	Scandic hotel, Fornebu
Publisher	Simula Metropolitan Center for Digital Engineering, Centre for Resilient Networks and Applications (CRNA)
Place Published	Inside Telecom conference
Type of Talk	Invited talk
Keywords	5G, Applications, Cloud services, geographical dependencies, network measurements, Resilience, Robustness

Contact person(s) for publication:

Haakon Bryhni

Head of Department

Research Professor

Talk, keynote

Research-based Innovation

In Grundergarasjen at SimulaMet. Grundergarasjen: Grundergarasjen, 2022.

Status: Published

Abstract

Grundergarasjen Bootcamp presentation

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering
Publication Type	Talk, keynote
Year of Publication	2022
Location of Talk	Grundergarasjen at SimulaMet
Date Published	01/2022
Publisher	Grundergarasjen
Place Published	Grundergarasjen
Type of Talk	Keynote
Keywords	Research based innovation

Contact person(s) for publication:

Haakon Bryhni

Head of Department

Research Professor

Robust ICT infrastructure during Hybrid Warfare

In Teknologirådet, Stortinget. Teknologirådet, Stortinget: Simula Metropolitan Centre for Digital Engineering, 2022.

Status: Published

Abstract

The talk "Robust ICT infrastructure during Hybrid Warfare" discussed how to achieve more robust network connectivity in the light of hybrid warfare.

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering, GAIA
Publication Type	Talk, keynote
Year of Publication	2022
Location of Talk	Teknologirådet, Stortinget
Date Published	11/2022
Publisher	Simula Metropolitan Centre for Digital Engineering
Place Published	Teknologirådet, Stortinget
Type of Talk	Keynote
Keywords	5G, Cloud services, Robustness, Seacables

2021

Public outreach

S. Gotaas, S. Larsen, S. Seres, H. Bryhni, B. Steen, I. Aaberg and B. Remseth

5G-race is on. Sweden and Germany shows the way.

In 5G-racet starter nå. Sverige og Tyskland viser vei. aftenposten.no: Aftenposten, 2021.

Status: Published

Abstract

Vi trenger mulighet for rask og ubyråkratisk etablering av lokale nett for å skape bredde og kraft i norsk 5G-innovasjon.

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering
Publication Type	Public outreach
Year of Publication	2021
Secondary Title	5G-racet starter nå. Sverige og Tyskland viser vei.
Date Published	03/2021
Publisher	Aftenposten
Place Published	aftenposten.no
Type of Work	Popular science
Keywords	5G, frequency, innovation, regulatory
URL	https://www.aftenposten.no/meninger/debatt/i/yRmWXg/5g-racet-starter-naa...

Poster

A. L. Khanyari

A decade of evolution in telecommunications infrastructure

In Poster: A decade of evolution in telecommunications infrastructure. IMC 21: IMC , 2021.

Status: Published

Abstract

Characterizing countries’ standing in terms of the maturity of their telecommunications infrastructure is paramount to inform policy and investments. Here, we use a broad set of features to group countries according to the state of their infrastructures and track how this has changed between 2010 and 2020. While a few nations continue to dominate, the membership of this club has changed with several European countries leaving

Afilliation	Communication Systems
Project(s)	GAIA
Publication Type	Poster
Year of Publication	2021
Secondary Title	Poster: A decade of evolution in telecommunications infrastructure
Date Published	10/2021
Publisher	IMC
Place Published	IMC 21
Type of Work	Internet measurements

Contact person(s) for publication:

Azan Latif Khanyari

PhD Student

azan@simula.no

Journal Article

A. Elmokashfi, A. Arouna, I. Livadariu, M. Fida, A. Kvalbein, A. S. Al-Selwi, T. Dreibholz and H. Bryhni

A Multi-Perspective Study of Internet Performance during the COVID-19 Outbreak

Arxiv (2021).

Status: Published

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

Contact person(s) for publication:

Haakon Bryhni

Head of Department

Research Professor

2020

Public outreach

5G - a big computer!

Digi.no: Teknisk Ukeblad Media AS, 2020.

Status: Published

Abstract

Article about the SimulaMet SMIL lab

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering, GAIA
Publication Type	Public outreach
Year of Publication	2020
Date Published	02/2020
Publisher	Teknisk Ukeblad Media AS
Place Published	Digi.no
Type of Work	Popular science article
Keywords	5G, GAIA, SMIL
URL	https://www.digi.no/artikler/5g-en-stor-datamaskin/485861

Contact person(s) for publication:

Haakon Bryhni

Head of Department

Research Professor

Teknisk sett - Episode 258 – 5G er en stor datamaskin (Podcast)

pcast.no: Teknisk ukeblad, 2020.

Status: Published

Abstract

Podcast om 5G-nettet

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering
Publication Type	Public outreach
Year of Publication	2020
Publisher	Teknisk ukeblad
Place Published	pcast.no
Type of Work	Popular science
Keywords	5G mobile communication
URL	https://www.pcast.no/podcast/episode-258-5g-er-en-stor-datamaskin/

Contact person(s) for publication:

Haakon Bryhni

Head of Department

Research Professor

Teknologihandel mellom Norge og Kina? (Podcast)

polyteknisk.no: Polyteknisk forening, 2020.

Status: Published

Abstract

The podcast discuss technology trade questions related to communication networks and microprocessor trade.

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering, GAIA
Publication Type	Public outreach
Year of Publication	2020
Publisher	Polyteknisk forening
Place Published	polyteknisk.no
Type of Work	Popular science
Keywords	5G mobile communication, Microprocessors
URL	https://www.polyteknisk.no/lytt-til-polypod-teknologihandel-mellom-norge...

Contact person(s) for publication:

Haakon Bryhni

Head of Department

Research Professor

Talk, keynote

Emerging technology divide in areas like 5G infrastructure and microprocessors

In NHO. NHO conference: NHO, 2020.

Status: Published

Abstract

Emerging technology divide in areas like 5G infrastructures and microprocessors

Afilliation	Communication Systems
Project(s)	Simula Metropolitan Center for Digital Engineering, GAIA
Publication Type	Talk, keynote
Year of Publication	2020
Location of Talk	NHO
Date Published	11/2022
Publisher	NHO
Place Published	NHO conference
Type of Talk	Keynote

Proceedings, refereed

A. F. Ocampo, M. Fida, A. Elmokashfi and H. Bryhni

Evaluating the Cloud-RAN architecture: functional splitting and switched Ethernet Xhaul

In 16th International Conference on Network and Service Management, CNSM 2020. Izmir Turkey and Virtual Conference: IEEE/IFIP, 2020.

Status: Published

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications
Publication Type	Proceedings, refereed
Year of Publication	2020
Conference Name	16th International Conference on Network and Service Management, CNSM 2020
Date Published	11/2020
Publisher	IEEE/IFIP
Place Published	Izmir Turkey and Virtual Conference
URL	http://dl.ifip.org/db/conf/cnsm/cnsm2020/1570663439.pdf
Reprint Edition	http://dl.ifip.org/db/conf/cnsm/cnsm2020/1570663439.pdf

A. F. Ocampo, T. Dreibholz, M. Fida, A. Elmokashfi and H. Bryhni

Integrating Cloud-RAN with Packet Core as VNF Using Open Source MANO and OpenAirInterface

In Proceedings of the 45th IEEE Conference on Local Computer Networks (LCN). Sydney, New South Wales/Australia: IEEE Computer Society, 2020.

Status: Published

Abstract

The Cloud-based Radio Access Network (Cloud-RAN) architecture and Network Function Virtualization (NFV) are key enablers to building future mobile networks in a flexible and cost-efficient way. With early deployments of the fifth generation of mobile technologies - 5G - around the world, setting up 4G/5G experimental infrastructures is necessary to optimally design 5G networks. In this demo, we present a custom small-scale 4G/5G testbed based on OpenAirInterface and Open Source MANO. The testbed integrates a Cloud-RAN based on switched Ethernet Xhaul and functional splitting, with an Evolved Packet Core (EPC) deployed as a Virtual Network Function (VNF) in a cloud infrastructure. Using Open Source MANO, this demo shows the administration and monitoring of the EPC VNF components. Moreover, as proof of concept, collection and visualization of telemetry will be shown for two smart-phones connected to the network through the Cloud-RAN.

Afilliation	Communication Systems
Project(s)	The Center for Resilient Networks and Applications, NorNet, Simula Metropolitan Center for Digital Engineering, 5G-VINNI: 5G Verticals INNovation Infrastructure , SMIL: SimulaMet Interoperability Lab
Publication Type	Proceedings, refereed
Year of Publication	2020
Conference Name	Proceedings of the 45th IEEE Conference on Local Computer Networks (LCN)
Date Published	11/2020
Publisher	IEEE Computer Society
Place Published	Sydney, New South Wales/Australia
Keywords	Cloud Radio Access Network (Cloud-RAN), Ethernet Xhaul, Fronthaul, Functional Splits, Network Function Virtualisation (NFV), Open Source MANO (OSM)

Contact person(s) for publication:

Thomas Dreibholz

Chief Research Engineer

Andres Felipe Ocampo Palacio

Postdoctoral Fellow

andres@simula.no

Haakon Bryhni

Head of Department

Research Professor