Multimedia communications in vehicular adhoc networks for several applications in the smart cities

Abstract

Resumen-Road safety applications envisaged for vehicular ad hoc networks (VANETs) depend largely on the exchange of messages to deliver information to concerned vehicles. Safety applications as well as inherent VANET characteristics make data dissemination an essential service and a challenging task. We are developing a decentralized efficient solution for broadcast data dissemination through two game-theoretical mechanisms. Besides, VANETs can also include autonomous vehicles (AVs). AVs might represent a revolutionary new paradigm that can be a reality in our cities in the next few years. AVs do not need a driver to work; instead, they should copy a proper human behavior to adapt the driving according to the current circumstances, such as speed limit, pedestrian crossing street or wheather conditions. We will develop an AV software module including artificial intelligence (AI) techniques so that AVs can interact with the dynamic scenario throughout time. Finally, we also will include electrical vehicles (EV) in the VANET, so that special services such as finding and reserving an EV charging station place will be welcome. In addition, we are developing a multimetric geographic routing protocol for VANETs to transmit H.265 video (traffic accident, traffic state, commercial….) over VANETs.Palabras Clave-Vehicular Ad hoc NETworks, video dissemination, privacy in VANETs, electrical vehicle (EV), autonomous vehicle (AV), artificial intelligence (AI). I. INTRODUCCIÓNVehicular ad hoc networks (VANETs) are foreseen as an essential component of the future intelligent transportation systems (ITS) to support safety, traffic management, and user infotainment applications. VANETs are a type of mobile ad-hoc networks (MANETs) forming self-organized networks without the requirement of permanent infrastructure, in which nodes are vehicles. Thus, the network topology might change rapidly due to the high mobility of nodes (vehicles), which makes communications a challenge.VANET vehicles can stablish vehicle-to-vehicle (V2V) communications to share information, as well as vehicle-to-infrastructure (V2I) communications for other kind of services. VANETs are intented for safeapplications, traffic management, and enhanced navigation among other services.Today, road traffic is the ninth biggest cause of death worldwide. By 2030, the increase in the number of vehicles will see road traffic become the fifth largest cause of death. One of the most important uses of VANETs are safety applications, which usually rely on broadcast-based algorithms. Flooding-based algorithms can be used to disseminate emergency messages rapidly and efficiently through the VANET to warn vehicles around e.g. an accident. Thus, a key research problem is the design of a scalable dissemination scheme, which is efficient, reliable and incurres short delay under different VANET conditions. To tackle this issue, we have developed an Adaptive Distributed Dissemination (ADD) [1] protocol, based on game-theoretical algorithms to compute the forwarding probability of no...