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Author: Corici, Marius ×

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Now showing 1 - 10 of 32
  • Publication
    5G and beyond for new space: Vision and research challenges
    ( 2021)
    Höyhtyä, Marko
    ;
    Corici, Marius
    ;
    Covaci, Stefan
    ;
    Guta, Maria
    This chapter creates a vision for 5G and beyond satellite connectivity and discusses use cases where development is needed. We define a layered architecture for future integrated terrestrial-nonterrestrial networks and discuss what are the key communications technologies needed to make the operation reliable and efficient. We outline research challenges including high-frequency bands, spectrum sharing and interference management, optical communications, and network management using software-defined networking principles. Autonomous transport and autonomous satellites are described both as key drivers behind the development as well as disruptive technologies to fulfill future needs.
  • Publication
    System Failure Prediction within Software 5G Core Networks using Time Series Forecasting
    ( 2021)
    Chakrabourty, Pousaly
    ;
    Corici, Marius
    ;
    Magedanz, Thomas
    5G network is very flexible because of the two concepts Network Functions Virtualization (NFV) and the Software Defined Networks (SDN). There are various use cases for 5G technology and for different cases different configuration of the network will be needed. 5G Technology will bring intelligence within the network. The ability to support massive connectivity across diverse devices will result in enormous data volume within the 5G network. Continuous monitoring and traffic log analysis in such a complex architecture will not be sufficient to ensure availability and reliability within the network. The integration of data analytics within the 5G network can leverage the potential of automation. By introducing automation in the monitoring process better Quality of Services (QoS) can be achieved and analysing the network traffic load for better bandwidth utilization within the network. This article proposes a solution to integrate time series based analytics with 5G core and predicting any threats within the system which can lead to system failure. To validate the proposal Fraunhofer FOKUS Open5GCore toolkit is used.
  • Publication
    Poster: Multipath Extensions for WireGuard
    ( 2021)
    Krentz, Konrad-Felix
    ;
    Corici, Marius
    The tunneling protocol WireGuard outperforms its main competitors OpenVPN and IPsec in terms of throughput and latencies. These improvements are due to WireGuard's use of faster crypto primitives, as well as to the implementation of WireGuard as a Linux kernel module that uses multithreading and advanced locking strategies. Independently of the WireGuard project, Lukaszewski et al. demonstrated improvements in end-to-end goodput when tunneling protocols exploit alternative communication paths. In this poster, we combine these two research directions by proposing multipath extensions for WireGuard. Our extensions involve additions to the WireGuard header, which enable obtaining real-time statistics on the performance of each path. Further, these real-time path performance statistics enable a self-adaptive selection of paths. As a proof of concept, we adapted the WireGuard Linux kernel module accordingly and prototyped four example path schedulers, two of which adopt multi-armed bandit algorithms.
  • Publication
    A comparative study for Time Series Forecasting within software 5G networks
    ( 2020)
    Chakrabourty, Pousaly
    ;
    Corici, Marius
    ;
    Magedanz, Thomas
    5G has a very flexible network architecture due to virtualization and will come with various customisations based on different use cases. 5G also promises to provide intelligent networks with high bandwidth and low latency. One of the tradeoffs for this is the complexity of network monitoring and resource management of 5G; making availability, reliability and performance a challenge. The adoption of Software Defined Networking (SDN) and Network Function Virtualization (NFV) concepts ensure availability of network data and flexibility in architectural decisions for 5G. Because of the availability of data and advanced computing capabilities usage of ML (Machine Learning)/Artificial Intelligence (AI) can be envisaged in the control and management of 5G networks by predicting the load on the network. This article proposes a solution to integrate time-series based predictive analytics with 5G Core and shows a comparative study between two Time Series Forecasting Models-AutoRegressive Integrated Moving Average (ARIMA) and Face-book Prophet. Fraunhofer FOKUS Open5GCore is used as the reference 5G testbed toolkit for validating the proposal.
  • Publication
    Framework for trustful handover of M2M devices between security domains
    ( 2020)
    Corici, Andreea Ancuta
    ;
    Corici, Marius
    ;
    Troudt, Eric
    ;
    Riemer, Bjoern
    ;
    Magedanz, Thomas
    The Internet of Things technology and services are becoming ubiquitous in multiple application domains like Smart Factory and Telecare. Some of the key requirements are security and flexibility. Identity Management and Access Control play a critical role allocating resources like IP connections and identifiers for secure and automatized onboarding of M2M devices as well as dynamic coupling of the M2M devices to the Application Servers, for assuring the communication reliability in case of maintenance or scaling of the infrastructure. This article analyses the requirements from multiple initiatives and standard organizations related to the M2M communication using 4G or 5G mobile networks and presents the concept and advantages of enabling dynamic cross-layer management for trustful handover between Security Domains that run their own core network. The concept validating demonstrators are presented and comparison with other solutions is also included.
  • Publication
    Integration of optical wireless communication with 5G systems
    ( 2020)
    Metin, Taner
    ;
    Emmelmann, Marc
    ;
    Corici, Marius
    ;
    Jungnickel, Volker
    ;
    Kottke, Christoph
    ;
    Müller, Marcel
    Researches have been conducted on Optical Wireless Communication (OWC) technology for a decade now, and because of the complexity, it naturally took a long way to become applicable for practical use cases. Current access systems are not sufficient to meet the continuously increasing demand on network performance of various applications. Visible Light Communication (VLC) is a form of OWC which specialized to use visible light. It is a promising innovation as it exploits new spectrum having favorable propagation and interference characteristics for various use cases. This paper aims at introducing a solution for integration of VLC with 5th Generation (5G) network systems. The offered solution also contains details of handover mechanism between licensed and unlicensed access types. The proposed work demonstrates the optical communication with 5G-based network systems in a common infrastructure in order to supply enhanced connectivity for industrial and private applications that require robust data links, less data loss, less downtime and higher uplink and downlink rates. Thus, improving connectivity at where Radio Frequency (RF) is not able to bring adequate performance like indoors. Our setup comprises two different data paths: one via a 5G system over standardized 3rd Generation Partnership Project (3GPP) components and the other via non3GPP unlicensed access with the Light Fidelity(LiFi) devices over non-3GPP Interworking Function (N3IWF).
  • Publication
    Design of moving experimentation facility to showcase satellite integration into 5G
    ( 2019)
    Politis, Christos
    ;
    Liolis, Konstantinos
    ;
    Corici, Marius
    ;
    Troudt, Eric
    ;
    Szabó, Zsolt
    ;
    Cahill, Joe
    This paper presents the end-to-end design of the Satellite-enabled 5G Moving Experimentation Facility (S5GMEF) which is currently under development and aims to showcase the satellite integration into 5G with focus on satellite backhauling solutions. It elaborates on the satellite transport network between the 5G Radio Access Network (RAN) and the 5G Core (5GC), where design aspects on the satellite network integration into the standard 3GPP 5GC architecture are detailed. It also addresses the split of the 5G system between the Central Node and the Edge Node, which is hosted on-board a satellite connected vehicle. The paper describes also the Management and Orchestration (MANO) and Network Functions Virtualisation Infrastructure (NFVI) features of the S5GMEF.
  • Publication
    Satellite integration into 5G: Accent on first over-the-air tests of an edge node concept with integrated satellite backhaul
    ( 2019)
    Völk, Florian
    ;
    Liolis, Konstantinos
    ;
    Corici, Marius
    ;
    Cahill, Joe
    ;
    Schwarz, Robert T.
    ;
    Schlichter, Thomas
    ;
    Troudt, Eric
    ;
    Knopp, Andreas
    The 5G vision embraces a broad range of applications including the connectivity in underserved and remote areas. In particular, for these applications, satellites are going to play a role in future 5G networks to provide capacity on trains, vessels, aircraft, and for base stations around the globe. In this paper, a 5G edge node concept, developed and evaluated with over-the-air tests using satellites in the geostationary orbit, is presented. The article covers a testbed demonstration study in Europe with a large-scale testbed including satellites and the latest standardization for the network architecture. The main goal of this testbed is to evaluate how satellite networks can be best integrated within the convergent 5G environment. The over-the-air tests for 5G satellite integration in this article are based on a 3GPP Release 15 core network architecture.
  • Publication
    Paving the way for local and industrial 5G networks and testbeds
    ( 2019)
    Corici, Marius
    ;
    Emmelmann, Marc
    ;
    Hauswirth, Manfred
    ;
    Magedanz, Thomas
    Local 5G networks are a major area of 5G innovation and offer vital insights into practical 5G deployment. Local 5G networks can give us important information because in these environments 5G technologies must be tightly integrated with different access network technologies and with the end-to-end software stacks of different vertical application domains, such as manufacturing and energy. To achieve this in an efficient and economical way, the Open5GCore.net software toolkit of Fraunhofer FOKUS provides the first 3GPP Release 15 5G core network implementation facilitating the rapid deployment of local 5G use-case-oriented testbeds. We have also developed the FOKUS ""5G Playground"", a reference live deployment, with multiple customised network slices based on the Open5GCore and use case applications. The ""5G Playground"" has served as a blueprint for many other 5G testbeds deployed across Europe and around the world in the context of 5GPPP.
  • Publication
    Over-the-air demonstration of satellite integration with 5G core network and multi-access edge computing use case
    ( 2019)
    Liolis, Konstantinos
    ;
    Cahill, Joe
    ;
    Higgins, E.
    ;
    Corici, Marius
    ;
    Troudt, Eric
    ;
    Sutton, Paul
    This paper presents in detail the successful over-the-air demonstration test conducted in the Mobile World Congress (MWC) 2019 Barcelona as part of the ESA ARTES projects SATis5 and OSMOSIS. This demo showcased the satellite integration with the latest 3GPP Release 15 5G Core Network, allowing to operate the satellite backhaul network as a 5G cellular access network, and demonstrated the efficient edge content delivery via a 4G/LTE cellular access network integrated with the satellite backhaul network. The key underlying architecture concept and the Multiaccess Edge Computing (MEC) use case are elaborated. Useful over-the-air validation test results are provided.