Wifi mobile access with software defined multi-connectivity
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Data
2019-06-12
Autores
Martinez, Victor Manuel Garcia
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Universidade Federal do Espírito Santo
Resumo
The emergence of new applications have made wireless networks evolve towards their fth
generation, a novel network paradigm that aims at ful lling a vast range of requirements
set by upcoming services and applications. The use of software-de ned 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 o oad
mobile data and good performance in indoor environments. However, WiFi su ers 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 a 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 e cient
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 proposed architecture is validated through its
implementation in real use cases for future 5G verticals, 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 demonstrate how new softwarization and virtualization
technologies can be used in existing wireless architectures to overcome some de ciencies
to achieve a successful integration of these wireless technologies in the new 5G network
paradigm.
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Palavras-chave
Wireless Networks , 5G , WiFi , SDN , Handover , Reliability , Redes Sem Fio , Handover , Confiabilidade