CLUSTER BASED HANDOFF MANAGEMENT TECHNIQUE IN VANET USING BACKUP NODE

Handoff in Vehicular Adhoc Networks (VANET) is a process in which one vehicle disconnected from one network and join to another network. In VANET, handover is a big challenge for a vehicle due to high mobility and the process of handover occurs frequently. This mobility of a vehicle creates a lot of issues. Many solutions have been proposed to resolve these problems and some of them became standardized like MIPv6, HMIPv6, PMIPv6, and NEMO BS. In this research, we have addressed issues that lie in such network, when a vehicle performs the handover procedure. The challenges that a vehicle faces in handover procedure have been discussed and compared. Also, a methodology Cluster Based Handoff using Backup node (CBHBCK) is proposed to achieve the continuity in the network named as cluster based handoff using backup node, in which a backup node that is responsible for handoff is introduced. Using this backup node overhead on cluster head and disconnectivity during handoff procedure will be reduced. At the end, results are compared with the NEMO and Cluster Based technology by simulation using NS2 simulator. Simulation result proves that the proposed technique has better ability to achieve the continuity in communication during handoff procedure.