A software defined vehicular network using cooperative intelligent transport system messages
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/34072 |
Resumo: | The increasing need for smarter means of transportation has brought a greater focus on Vehicular Ad-Hoc Network (VANET)s. VANETs are characterized by frequent topology changes due to high node mobility and most of the existing network protocols for mobility management are not well prepared for constant horizontal handovers. More recently, with the appearance of SDN, new solutions have emerged. The advantages of SDN, such as its exibility and programmability, made it possible to create solutions with lower complexity. This dissertation presents a solution that aims to improve the existing SDN solution, adding elements already present in the ITS universe. The use of C-ITS messages in the SDN universe allows the controller to have a deeper view of the topology state, being able to know where each OBU is located at any time. This global view gives the controller proactiveness, anticipating handovers even before they happen. The prediction of handovers allows the reduction of delays and thus improves the user experience. To evaluate the proposed solution, two types of environments were considered, laboratory and city. For each environment, setups, scenarios and use cases were defined with different characteristics and requirements. The results obtained confirm the correct operation of the solution. When comparing the results of the proposed solution with an existing one, that do not explore the benefits of the ITS universe, we can see an almost zero packet loss rate and a reduction in the average delay. |
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A software defined vehicular network using cooperative intelligent transport system messagesVehicular ad-hoc networksSoftware-defined networksIntelligent transport systemsHorizontal handoversThe increasing need for smarter means of transportation has brought a greater focus on Vehicular Ad-Hoc Network (VANET)s. VANETs are characterized by frequent topology changes due to high node mobility and most of the existing network protocols for mobility management are not well prepared for constant horizontal handovers. More recently, with the appearance of SDN, new solutions have emerged. The advantages of SDN, such as its exibility and programmability, made it possible to create solutions with lower complexity. This dissertation presents a solution that aims to improve the existing SDN solution, adding elements already present in the ITS universe. The use of C-ITS messages in the SDN universe allows the controller to have a deeper view of the topology state, being able to know where each OBU is located at any time. This global view gives the controller proactiveness, anticipating handovers even before they happen. The prediction of handovers allows the reduction of delays and thus improves the user experience. To evaluate the proposed solution, two types of environments were considered, laboratory and city. For each environment, setups, scenarios and use cases were defined with different characteristics and requirements. The results obtained confirm the correct operation of the solution. When comparing the results of the proposed solution with an existing one, that do not explore the benefits of the ITS universe, we can see an almost zero packet loss rate and a reduction in the average delay.A crescente necessidade de meios de transporte mais inteligentes trouxe um maior foco às Redes de Comunicações Veiculares. Estas redes caracterizam-se por frequentes mudanças de topologia devido à elevada mobilidade dos seus elementos, e muito dos protocolos de rede existentes para gestão de mobilidade não estão bem preparados para constantes processos de han- dovers. Mais recentemente, com o surgimento das Redes Definidas por Software (SDN), novas soluções surgiram. As vantagens do SDN, como a sua flexibilidade e programabilidade, possibilitam a criação de soluções com menor complexidade. Esta dissertação apresenta uma solução de gestão de mobilidade baseada em SDN que visa utilizar elementos já existentes no universo ITS, nomeadamente as mensagens C-ITS, oferecendo ao controlador uma visão mais profunda do estado da topologia, como por exemplo a localização de cada elemento móvel. Esta visão global oferece ao controlador proatividade, permitindo-o antever handovers antes de estes acontecerem. Esta abordagem tem como objetivo a redução dos atrasos na comunicação, melhorando assim a experiência do utilizador. Para avaliar a solução proposta foram considerados dois tipos de ambientes, laboratorial e de cidade. Para cada um dos ambientes foram definidos cenários e casos de uso com diferentes características e requisitos, e os resultados obtidos confirmam o correto funcionamento da solução. Os resultados da comparação entre a solução proposta e uma solução SDN já existente, que não tira partido do universo ITS, mostram que a nova solução obteve, para os vários cenários, uma taxa de perda de pacotes quase nula, e uma redução no atraso médio.2023-01-02T00:00:00Z2021-12-20T00:00:00Z2021-12-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10773/34072engDias, Duarte Rochainfo:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:05:39Zoai:ria.ua.pt:10773/34072Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:05:25.913242Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
A software defined vehicular network using cooperative intelligent transport system messages |
title |
A software defined vehicular network using cooperative intelligent transport system messages |
spellingShingle |
A software defined vehicular network using cooperative intelligent transport system messages Dias, Duarte Rocha Vehicular ad-hoc networks Software-defined networks Intelligent transport systems Horizontal handovers |
title_short |
A software defined vehicular network using cooperative intelligent transport system messages |
title_full |
A software defined vehicular network using cooperative intelligent transport system messages |
title_fullStr |
A software defined vehicular network using cooperative intelligent transport system messages |
title_full_unstemmed |
A software defined vehicular network using cooperative intelligent transport system messages |
title_sort |
A software defined vehicular network using cooperative intelligent transport system messages |
author |
Dias, Duarte Rocha |
author_facet |
Dias, Duarte Rocha |
author_role |
author |
dc.contributor.author.fl_str_mv |
Dias, Duarte Rocha |
dc.subject.por.fl_str_mv |
Vehicular ad-hoc networks Software-defined networks Intelligent transport systems Horizontal handovers |
topic |
Vehicular ad-hoc networks Software-defined networks Intelligent transport systems Horizontal handovers |
description |
The increasing need for smarter means of transportation has brought a greater focus on Vehicular Ad-Hoc Network (VANET)s. VANETs are characterized by frequent topology changes due to high node mobility and most of the existing network protocols for mobility management are not well prepared for constant horizontal handovers. More recently, with the appearance of SDN, new solutions have emerged. The advantages of SDN, such as its exibility and programmability, made it possible to create solutions with lower complexity. This dissertation presents a solution that aims to improve the existing SDN solution, adding elements already present in the ITS universe. The use of C-ITS messages in the SDN universe allows the controller to have a deeper view of the topology state, being able to know where each OBU is located at any time. This global view gives the controller proactiveness, anticipating handovers even before they happen. The prediction of handovers allows the reduction of delays and thus improves the user experience. To evaluate the proposed solution, two types of environments were considered, laboratory and city. For each environment, setups, scenarios and use cases were defined with different characteristics and requirements. The results obtained confirm the correct operation of the solution. When comparing the results of the proposed solution with an existing one, that do not explore the benefits of the ITS universe, we can see an almost zero packet loss rate and a reduction in the average delay. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-20T00:00:00Z 2021-12-20 2023-01-02T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/34072 |
url |
http://hdl.handle.net/10773/34072 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/embargoedAccess |
eu_rights_str_mv |
embargoedAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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