Name: Victor Manuel García Martínez
Type: MSc dissertation
Publication date: 12/06/2019

Namesort descending Role
Moisés Renato Nunes Ribeiro Advisor *

Examining board:

Namesort descending Role
Iguatemi Eduardo da Fonseca External Examiner *
Jair Adriano Lima Silva Internal Examiner *
Moisés Renato Nunes Ribeiro Advisor *

Summary: The emergence of new applications have made wireless networks evolve towards their fifth generation, a novel network paradigm that aims at fulfilling a vast range of requirements set by upcoming services and applications. The use of software-defined networks and virtualization allow creating a service-oriented network, integrated with several radio technologies in its access network. WiFi is one of such technologies and, due to its current ubiquity use, it presents itself as an interesting option due to its popularity, ability to offload
mobile data and good performance in indoor environments. However, WiFi suffers from crucial issues like spectrum interference, connectivity loss, long delay for client association
and high latency handover, all of those with direct negative impact on communication
reliability. This dissertation propose SDN architecture to ensure enhanced communication reliability over WiFi wireless networks based on a user access multi-connectivity scheme. This work focuses on splitting the WiFi architecture functionalities in a more efficient way, designed to provide seamless mobility through multi-connectivity, introducing the concept of mobile Access Point in contrast to the traditional operation mode WHERE the client station is the only mobile entity. The architecture is validated through its implementation in real
use cases for future eHealth and Industry 4.0, both using the concepts of cloud robotics as a critical application to be supported. Results are shown and discussed, demonstrating the feasibility of employing such novel architecture to achieve high reliability service requirements. The results also demonstrates how new softwarization and virtualization technologies can be used in existing wireless architectures to overcome some deficiencies
to achieve a successful integration of these wireless technologies in the new 5G network paradigm.

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