• 5G Network Slice Isolation with WireGuard and Open Source MANO: A VPNaaS Proof-of-Concept 

      Haga, Simen; Esmaeily, Ali; Kralevska, Katina; Gligoroski, Danilo (Chapter, 2020)
      The fifth-generation (5G) mobile networks aim to host different types of services on the same physical infrastructure. Network slicing is considered as the key enabler for achieving this goal. Although there is some progress ...
    • 5G Network Slicing as an Enabler for Smart Distribution Grid Operations 

      Mendis, Handunneththi V. Kalpanie; Heegaard, Poul Einar; Kralevska, Katina (Journal article; Peer reviewed, 2019)
      The power distribution grid has to undergo substantial modifications in order to meet the future electricity needs. The increased flexibility in power consumption, local production and storage insist on smarter supervisory ...
    • Applied Erasure Coding in Networks and Distributed Storage 

      Kralevska, Katina (Doctoral theses at NTNU;2016:341, Doctoral thesis, 2016)
      The amount of digital data is rapidly growing. There is an increasing use of a wide range of computer systems, from mobile devices to largescale data centers, and important for reliable operation of all computer systems ...
    • Blockchain in healthcare and health sciences—A scoping review 

      Hasselgren, Anton; Kralevska, Katina; Gligoroski, Danilo; Pedersen, Sindre Andre; Faxvaag, Arild (Journal article; Peer reviewed, 2019)
      Background Blockchain can be described as an immutable ledger, logging data entries in a decentralized manner. This new technology has been suggested to disrupt a wide range of data-driven domains, including the health ...
    • A Cloud-based SDN/NFV Testbed for End-to-End Network Slicing in 4G/5G 

      Esmaeily, Ali; Kralevska, Katina; Gligoroski, Danilo (Chapter, 2020)
      Network slicing aims to shape 5G as a flexible, scalable, and demand-oriented network. Research communities deploy small-scale and cost-efficient testbeds in order to evaluate network slicing functionalities. We introduce ...
    • Evaluation of HTTP/DASH Adaptation Algorithms on Vehicular Networks 

      Vergados, Dimitrios; Michalas, Angelos; Kralevska, Katina; Vergados, Dimitrios D. (Chapter, 2019)
      Video streaming currently accounts for the majority of Internet traffic. One factor that enables video streaming is HTTP Adaptive Streaming (HAS), that allows the users to stream video using a bit rate that closely matches ...
    • Expanded combinatorial designs as tool to model network slicing in 5G 

      Gligoroski, Danilo; Kralevska, Katina (Journal article; Peer reviewed, 2019)
      The network slice management function (NSMF) in 5G has a task to configure the network slice instances and to combine network slice subnet instances from the new-generation radio access network and the core network into ...
    • GDPR Compliance for Blockchain Applications in Healthcare 

      Hasselgren, Anton; Wan, Paul Kengfai; Horn, Margareth; Kralevska, Katina; Gligoroski, Danilo; Faxvaag, Arild (Chapter, 2020)
      The transparent and decentralized characteristics associated with blockchain can be both appealing and problematic when applied to a healthcare use-case. As health data is highly sensitive, it is therefore, highly regulated ...
    • GDPR Compliant Blockchain and Distributed Ledger Technologies in the Health Sector 

      Hasselgren, Anton; Kralevska, Katina; Gligoroski, Danilo; Faxvaag, Arild (Peer reviewed; Journal article, 2020)
    • Hadoop, and Its Mechanisms for Reliable Storage 

      Midthaug, Ingvild Hovdelien (Master thesis, 2018)
      Nowadays the global amount of digital data increases rapidly. Internet-connected devices generate massive amounts of data through various interactions such as digital communication and file sharing. In a world surrounded ...
    • HashTag Erasure Codes: From Theory to Practice 

      Kralevska, Katina; Gligoroski, Danilo; Jensen, Rune Erlend; Øverby, Harald (Journal article; Peer reviewed, 2018)
      Minimum-Storage Regenerating (MSR) codes have emerged as a viable alternative to Reed-Solomon (RS) codes as they minimize the repair bandwidth while they are still optimal in terms of reliability and storage overhead. ...
    • Local voting: A new distributed bandwidth reservation algorithm for 6TiSCH networks 

      Vergados, Dimitrios; Kralevska, Katina; Jiang, Yuming; Michalas, Angelos (Peer reviewed; Journal article, 2020)
      The IETF 6TiSCH working group fosters the adaptation of IPv6-based protocols into Internet of Things by introducing the 6TiSCH Operation Sublayer (6top). The 6TiSCH architecture integrates the high reliability and low-energy ...
    • Network Traffic Driven Storage Repair 

      Gligoroski, Danilo; Kralevska, Katina; Jensen, Rune Erlend; Simonsen, Per (Journal article; Peer reviewed, 2019)
      Recently we constructed an explicit family of locally repairable and locally regenerating codes. Their existence was proven by Kamath et al. but no explicit construction was given. Our design is based on HashTag codes that ...
    • Practical Functional Regenerating Codes for Broadcast Repair of Multiple Nodes 

      Mital, Nitish; Kralevska, Katina; Ling, Cong; Gündüz, Deniz (Journal article; Peer reviewed, 2019)
      A code construction and repair scheme for optimal functional regeneration of multiple node failures is presented, which is based on stitching together short MDS codes on carefully chosen sets of points lying on a linearized ...
    • SDN - a crucial security component towards 5G 

      Førland, Mathias Kjølleberg (Master thesis, 2019)
      Den femte generasjonen (5G) av mobilkommunikasjonssystemer forventes å bli kommersielt lansert i 2020 og forutses som en banebrytende teknologi som blant annet muliggjør brukstilfeller for kritisk infrastruktur som autonome ...
    • SoK of Used Cryptography in Blockchain 

      Raikwar, Mayank; Gligoroski, Danilo; Kralevska, Katina (Journal article; Peer reviewed, 2019)
      The underlying fundaments of blockchain are cryptography and cryptographic concepts that provide reliable and secure decentralized solutions. Although many recent papers study the use-cases of blockchain in different ...
    • Towards 5G network slice isolation with WireGuard and Open Source MANO 

      Haga, Simen (Master thesis, 2020)
      Å støtte vertikale industri segmenter og tjeneste-utvikling har vært en prioritet under utviklingen av 5G mobilnettet. Ved hjelp av nye business modeller og teknologier som Virtuelle Nettverksfunksjoner og Programvaredefinerte ...
    • Towards Optimal Distributed Node Scheduling in a Multihop Wireless Network through Local Voting 

      Vergados, Dimitrios; Amelina, Natalia; Jiang, Yuming; Kralevska, Katina; Granichin, Oleg (Journal article; Peer reviewed, 2018)
      In a multihop wireless network, it is crucial but challenging to schedule transmissions in an efficient and fair manner. In this paper, a novel distributed node scheduling algorithm, called Local Voting, is proposed. This ...
    • VerifyMed - Application of blockchain technology to improve trust in virtualized healthcare services 

      Rensaa, Jens-Andreas Hanssen (Master thesis, 2020)
      Helsevesenet går mot økt bruk av digitale helsetjenester. Ved å bruke slike tjenester kan pasienter møte helsepersonell ved bruk av nettbaserte applikasjoner, for eksempel via digitale konsultasjoner på video eller chat. ...
    • VerifyMed-A blockchain platform for transparent trust in virtualized healthcare: Proof-of-concept 

      Hanssen Rensaa, Jens-Andreas; Gligoroski, Danilo; Kralevska, Katina; Hasselgren, Anton; Faxvaag, Arild (Chapter, 2020)
      Patients living in a digitized world can now interact with medical professionals through online services such as chat applications, video conferencing or indirectly through consulting services. These applications need to ...