A reliable routing protocol based on QoS for VANET

Vehicular Ad Hoc Network (VANET) is a new form of wireless ad hoc network to provide multi-hop wireless communication among vehicle and nearby roadside equipment. With the development of VANET, it is more and more important to provide QoS guarantee for multimedia application. Considering the characteristics of VANET in highway traffic environment, this paper proposes a reliable QoS routing protocol called RQ-AODV (the reliable QoS routing protocol based on Ad Hoc on-demand distance vector) for VANET. RQ-AODV can find a reliable routing path with multiple QoS constraints, such as bandwidth, delay. The simulation results in NS2 show that the performances of RQ-AODV are better than AODV in packet drop ratio and end-to-end delay.