Abstract
Current vehicular networks are developed upon commercial solutions based on cellular networks (CNs) or vehicular ad-hoc networks (VANETs), both present in numerous research proposals. Current approximations are not enough to cover the communication necessities of several applications at the same time, and they are not suitable for future vehicular pervasive services. The vehicular network presented in this paper fills the existent gap between solutions lacking in flexibility, mainly supported by an infrastructure deployment, and those highly local and distributed, such as sole-VANET approximations. In this manner, an overlay communication platform which can work over the CN basis has been designed and developed. This architecture is complemented by an additional support of an information system located at the infrastructure side. Moreover, since most of the information received from current notification services is not relevant for the driver, an additional subsystem has been devised to provide adapted information to users. This has been carried out by means of an ontology model which represents users' preferences and contextual information. Finally, using a whole prototype of the telematic platform, the performance of this interring process has been evaluated to point out its impact on the system operation.
Highlights
Vehicular networks are becoming essential for telematics services within the Intelligent Transportation Systems (ITSs) field
In order to evaluate the performance of the information adaptation subsystem, we have developed a model that contains enough information to deal with real situations and different users’ profiles
The work presented in this paper covers an integral design of a telematic infrastructure for ITS services deployment oriented to the provision of contextual information
Summary
Vehicular networks are becoming essential for telematics services within the Intelligent Transportation Systems (ITSs) field. The usefulness of wireless data communications in vehicles is noticeable in current monitoring solutions, which help companies to manage their transport fleets These systems are mainly based on a navigation unit and a communication channel, which is usually established through the cellular network (CN). Regarding V2V solutions, vehicular ad hoc networks (VANETs) using WLAN (wireless LAN) and DSRC are the prevailing technologies, and they are mainly used in safety applications These services use V2V communications to propagate messages over a network created by vehicles. Maintaining the driver up-to-date about potential collisions is considered as one of the main goals on vehicular communications developments This kind of safety applications has practically received all the attention in the past, new technological improvements and the globalization of services offered in other environments have led to the consideration of new generation services for vehicles.
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