Analysis of next hop selection for geocasting in VANET

Abstract

Geocasting is a special variant of multicasting, where data packet or message is transmitted to a predefined geographical location i.e., known as geocast region. The applications of geocasting in VANET are to disseminate information like, collision warning, advertising, alerts message, etc. The topology of VANET is changes frequently and rapidly due to the fast movement of vehicles. Therefore, the link time between two neighboring vehicles exist for a short span of time. This makes delivery of messages to a geocast region most challenging issue in VANET. In this paper, we have proposed an analytical model based on connectivity and selection of next node. For the better network connectivity in multi hop vehicular ad hoc network each cell should have at least one node. The numerical results show how connectivity between nodes depends on the transmission range of nodes. © 2011 Springer-Verlag Berlin Heidelberg.