An enhanced approach to reduce rerouting time in MANETs

MANET routing protocols have to deal with link breaks which occur due to frequent movement of the nodes and dynamic network topology. The protocol has to find alternative paths in these situations. The latency occurred during this retransmission is referred to rerouting time. Several approaches have been proposed by researchers to improve rerouting time. One such approach is buffer zone routing where the transmission area of a node is divided into a safe zone close to the node and an unsafe zone near the end of the transmission range. However, this approach has few gaps and limitations such as optimal size of the buffer zone, network load etc. This paper proposes an approach to enhance or extend the buffer zone transmission where nodes within the buffer zone are grouped as virtual zones based on their energy level. The approach provides solutions to the problems in existing algorithm and addresses the gaps in it. There by reducing the rerouting time in MANETs.