A Routing Technique for Enhancing the Quality of Service in Vanet

VANET (Vehicular Ad- hoc Network) is becoming a part of a smart city in this communicating world. The major issue is frequent "Link Breakage Problem" between Source vehicle and Forwarding Vehicles (FV). If a source vehicle wants to send a set of the data packet to a destination vehicle there needs to have an FV(s) to transmit the data, given the destination vehicle is situated outside the communication range. Normally the Link Breakage problem degrades the quality of service (QoS) of Vehicular Ad hoc Network (VANET), which in turn degrades the following Parameters which determine the QoS. These are Packet Delivery Ratio, increases End to End delay, increases the Control Packet Overhead and reduces the data rate, namely bit/sec/vehicle. In our new method, we have made all the above parameters better than existing methods by a new approach, which able to make an End to End communicate for a long-time. It is done by choosing a possible FV, which will remain in the transmission zone of the source unless the complete data packet is received by the FV. This is done by defining an "Effective Region" we call it "E-region", where FV was chosen from that region. This region is defined from a calculated parameter "E". This parameter E is calculated from the relative velocity of the source and the chosen forwarding vehicle. We have found that our method can deliver about 14.8 kbit/sec/Vehicle data compare to other methods which were ranging from (7.87-1.21) kbit/sec/Vehicle for 300 vehicles in street.