LEE- İşletme Mühendisliği-Yüksek Lisans

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http://hdl.handle.net/11527/19310

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Yazar "Çetin, Ahmet" ile LEE- İşletme Mühendisliği-Yüksek Lisans'a göz atma
  • Öge
    Implications of NFV-SDN technology on the telecom sector in Turkey
    (Graduate School, 2023-02-17) Çetin, Ahmet ; Gültekin, Derya ; Yıldırım, Nihan ; 507171001 ; Management Engineering
    Network virtualization technologies are physical equipment with an ability to turn network functions running on dedicated software into any packaged software by eliminating these dependencies and running them virtually independently of the hardware. NFV (Network Function Virtualization) and SDN (Software Defined Network) concepts are architectures created for the virtualization of different network functions based on this basis. They are positioned as the technological advancements that are expected to serve as leverage for service providers to quickly deploy necessary new network functions or quickly expand their existing capacities. Moreover, there is an expectation that network virtualization technologies will have a disruptive impacts brining structural changes to telecommunication industry. With respect to the rapid response ability that is enabled by NFV and SDN technologies, Communication Service Providers (CSPs) can reduce their Operational Expenditures (OPEX). With network virtualization technologies, Telecom service providers will be able to start positioning their infrastructures to work entirely on Cloud systems, and hence to expand faster and scale more easily. By utilizing this ability, it will be possible to make configuration changes of functions that work over a common hardware pool instead of functions that are in communication with independent hardware have its own advantages. Such as automating operational needs or the inclusion of machine learning and artificial intelligence technologies in the future is possible. Even more the ability to self-managing the entire network with artificial intelligence will also be possible. In light of all these effects, it is argued that NFV/SDN technologies will be positioned as a 'disruptive technology' due to the expectations on their potential for changing the entire hardware equipment market and operational activities in the Telecom sector. In this context, this thesis study aims to understand how the changes that will occur with NFV/SDN technology adoption can affect and shape the telecommunication industry in Turkey. For this aim, we first analyzed the government policies and support activities of the telecommunications industry in Turkey to understand the current position of the Turkish Telecom industry. Concerning the lack of policies and unclear support activities by the government, we focused on the possible deployment scenarios of NFV/SDN technologies and their benefits and adoption patterns. Regarding to the literature review, it was analyzed 6 scenarios' deployment possibilities and their adoption which scenarios are; Virtual network platform as a service, Virtualisation of Core network, Virtualisation of the mobile base station, Virtual network function as a service, Virtualisation of Content Delivery Networks, Network Function Virtualisation Infrastructure as a Service. Expert opinions are collected by a Delphi questionnaire that was prepared based on the literature review. Before the Delphi survey, three experts from the industry were interviewed and their opinions on the structure of the survey were taken. Before proceeding to the first phase of the questionnaire, a pre-survey was conducted with selected experts and the clarity of the questions and the suitability of the structure to the participants were analyzed. Then, the online survey was executed in two rounds and delivered to the participants via e-mails. The dataset consisted 33 and 26 cases in the first and second rounds of the questionnaire, respectively. The data were analyzed by qualitative and quantitative methods. For validity, the standard deviations between the answers were calculated as the steps of quantitative analysis, the mean values and the consensus ratios of the answers and the correlations between the answers were found. As qualitative analysis; a clustering and grouping process completed with regarding to the codes analyzed from the responses. After the Delphi survey, concerning the findings about the possible deployment scenarios in Turkey, it was analyzed possible economic opportunities. Regarding the IDATE cost breakdown model, it was analyzed if the Network Infrastructure spending is expected to move to the virtual network infrastructure and which technology type is expected to move on virtualization most. The findings revealed that that the implementation of core network virtualization through NFV/SDN utilization is the most anticipated scenario among the network virtualization scenarios in Turkey. Although it is thought that the automation and use of artificial intelligence brought by virtualization will start after 2025 with low impact, the expectation that virtual core networks will be available in at least half of the network by 2025 outweighs. Although Delphi survey did not reveal a need for much change in the current regulations, still need for policy and legislation development occurred as a requirement. According to the results; the protection of the existing trained human resources which endangered by brain-drain, and the adverse effects of the economic recession seem to be the biggest obstacles to the increase in the prevalence of network virtualization technologies.