Multihoming in software defined vehicular networks

• Autor(a) principal: Ferreira, Nuno Martins de Castro
• Data de Publicação: 2023
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/40103
• topic: Vehicular ad-hoc networks; Software-defined networking; Multihoming; Intelligent transport systems

In the last decade, the advancements made in the automotive industry have brought an increasing focus on Intelligent Transport Systems and Services (ITS). This dissertation proposes a solution for software defined vehicular networks that, combined with Cooperative-ITS messages, aims to manage a multihoming vehicular network where each vehicle is equipped with several wireless technologies (ITS-G5 and cellular). The proposed solution is based on the current Software Defined Network (SDN) deployed in the Aveiro Tech City Living Lab (ATCLL). The works starts with the integration of OpenvSwitch (OVS) in the different wireless interfaces present in the On-Board Units (OBU) and Road Side Units (RSU). Then, several components were developed and integrated in the OBU local controller, namely the uplink decision logic. The solution was tested in both laboratory and city environment to assess the correct behaviour of the solution and its robustness. The results prove the advantage of having more than one Radio Access Technology (RAT) on the vehicle and the benefits brought by multihoming. The reliability and user experience is improved since now the vehicle has constant connectivity to the infrastructure, even when it does not have ITS-G5 coverage. With the ability to control the wireless interfaces via SDN, the OBU local controller is able to dynamically select the most suitable communication link to route the packets according to the service application. This decision logic takes into consideration several factors, such as the vehicle’s position and the quality of the ITS-G5 signal received from the neighbooring RSUs.