Content and Context Aware Strategies for QoS Support in VANETs

Abstract

Abstract-The increasing interest in autonomous coordinated driving and in proactive safety services, exploiting the wealth of sensing and computing resources which are gradually permeating the urban and vehicular environments, is making provisioning of high levels of QoS in vehicular networks an urgent issue. At the same time, the spreading model of a smart car, with a wealth of infotainment applications, calls for architectures for vehicular communications capable of supporting traffic with a diverse set of performance requirements. So far efforts focused on enabling a single specific QoS level. But the issues of how to support traffic with tight QoS requirements (no packet loss, and delays inferior to 1ms), and of designing a system capable at the same time of efficiently sustaining such traffic together with traffic from infotainment applications, are still open. In this paper we present the approach taken by the CONTACT project to tackle these issues. The goal of the project is to investigate how a VANET architecture, which integrates contentcentric networking, software-defined networking, and context aware floating content schemes, can properly support the very diverse set of applications and services currently envisioned for the vehicular environment.

SDN Coordination for CCN and FC Content Dissemination in VANETs

“…Besides the advantages that both FC and CCN may bring in storing and disseminating content in VANETs, their performance could be improved by the coordination of a centralized entity that has global knowledge of the nodes, mobility, their interest in a given content, as well as other information. It can properly set FC and CCN parameters (e.g., AZ size, time to replicate content, strategy for content caching) and select which approach is more suitable for a given use case [6].…”

Um Novo Serviço de Gerenciamento de Tráfego para ITS baseado em Computação em Névoa

“…Os serviços de sugestão de rotas desenvolvidos para o ITS possuem características intrínsecas em relaçãoà maneira como processam, armazenam e disseminam dados [Rizzo et al 2016]. Por exemplo, os dados coletados (i.e., condições de tráfego) de uma região específica podem ser irrelevantes para outras regiões da cidade.…”

“…GPS, velocidade) e nas vias (e.g. fluxo da via) [Rizzo et al 2016]. Portanto, o uso de uma infraestrutura centralizada de comunicação, como a computação em nuvem [Hou et al 2016, Ling et al 2018, nãoé adequada para os serviços de sugestão de rotas devido aos atrasos na comunicação, as perdas de dados, as interrupções do canal de comunicação, além de existir problemas com a largura de banda e sobrecarga na rede.…”

Vehicular Ad-Hoc Networks for Smart Cities

“…The involvement of highly mobile, static and mixed node deployment pattern and requirement of Quality of services (QoS) [37] have made it more complex. The concept of noncentralized design make it robust, self control and self organized.…”