Abstract:
Vehicular Ad-Hoc Network (VANET) is the road vehicles communication network
without a base station. For end to end communication between vehicles, a routing protocol is used
to find a route based on link properties from one to another vehicle with specific requirements. In
VANET, vehicles move at high speed, which makes topology changed all the time, often causing
failures in data transfer. Additionally, the failures happen when the signal congestion is high in
the VANET; the efficiency of data transfer therefore decreases. Thus, routing in VANET with
high speed movement and high signal congestion is challenging. In this article, we present
AODV-CAVM algorithm which including two mechanisms; first is using a cross-layer technique
that calculates Channel Availability at the link layer; second is implementing mobility prediction
based on neighborhood knowledge. We apply these mechanisms to modify AODV routing
protocol to improve the communication reliability and latency for use in vehicle delay sensitive
applications. We conduct our experiments on vehicular networks using NCTUns simulator with
the realistic road-based mobility model. Our experiment results show that AODV-CAVM
achieves better performance.