Zone Based Selective Neighbours to Mitigate Flooding & Reliable Routing for WSN

Growing demand in wireless Mobile Adhoc Networks due to their immense potential and effectiveness in varied applications had motivated researchers to control and optimize various parameters for efficient routing in mobile environment. The rapidly changing environment of the network due to mobility of nodes results in unpredictable topology and thus introduces primary challenge to design better and an efficient routing protocol. The network in such case lacks fixed infrastructure and common head centric design. MANET routing schemes use flooding to propagate packets in the network resulting retransmissions, collisions, and congestions which significantly degrade the performance of the network. Using GPS, knowing the geographical position of the sensor nodes, the protocol performance can be improved while reducing the number of retransmissions. The proposed work is a future extension of efficient flooding based on selective neighbours where the surrounding region limiting the transmission range is divided into eight quadrants or zones with the source at the centre called zone based selective neighbours (ZBSN). Flooding based on selective four neighbours suffers from few selection of hoping or forwarding nodes when the node density is low and does not meet the selection criteria around the source or forwarder node and may miss the chance of approaching the destination or requires large number of hops. This neighbour selection scheme uses the modified approach of the Adhoc on Demand Distance Vector (AODV) protocol to reduce the flooding of Route request (RREQ) packets, control the network overall traffic, improves link stability and the residual energy reducing the overheads by 24%.