Optimized handoff process in IEEE802.11p based VANET

The IEEE802.11p is a draft standard intended to support wireless access in the vehicular environment (WAVE). IEEE802.11p offers the connectivity to the highly mobile vehicular network. The IEEE802.11p standard has introduced the multichannel concept but it does not specify the mechanism for channel access and handoff process for V2I (Vehicle-to-Infrastructure) communication. We present handoff process in vehicular communications by adopting IEEE 802.11p based communication systems. This research mainly focuses on reducing the total time taken by handoff and support seamless handoff process for application demanding the real-time services. The proposed scheme reduces the control messages latency and uses the multi-channel operation of IEEE802.11p that has optimized handoff process. The Simulation result shows that the time taken by handoff and delay regarding control message is reduced. Simulation results show best performance of the proposed scheme compared to existing scheme.