Résumé:
Discovering and accessing services while on the road is
an important component in the architecture of future vehicular ad
hoc networks, and for a successful deployment of services. Several
studies have focused on the design and development of new
routing and dissemination techniques that allow vehicles to
communicate with each other and with road side units. However,
detecting and reaching available services in a vehicular network
remains problematic due to the amount of wireless traffic
generated when service queries or advertisements are flooded
across the network. In this paper, we propose a cooperative
hybrid service discovery scheme for discovering services provided
by mobile vehicles. This scheme is achieved through cooperating
vehicles using store-and-forward approach and by sharing
collected service information. We also propose to study the
performance of the scheme by varying its degree of reactiveness
and proactiveness. It is integrated with a caching mechanism
which substantially improves the performance of the service
discovery in terms of reduction of the traffic generated, and
minimization of the response time while increasing the discovery
success rate.
