A Distributed Framework for Content Based Dissemination in Vehicular P2P Environments

Emerging vehicular applications and their implementation are still research challenges due to highly dynamic nature of vehicular networks. Nevertheless, asynchronous communication provides support for successful implementation in such unique characteristic networks. In this paper we propose an approach that integrates the application middleware operations with multicast routing to develop a dynamic dissemination framework. The method aggregates content-based subscriptions in the form of a compact data format using Binary Decision Diagram and extends Spatio-temporal Multicast Routing Protocol to route the events in the network. Simulation results present a comparative performance of the filtering techniques applied in the framework in terms of the network overhead and delivery ratio. Results also present the comparison of the matching time of subscription queries with the event publication messages.