AN EFFICIENT STRATEGY TO INCREASE NETWORK LIFETIME FOR LARGE WSN
K. Gowri, Kittusamy Kousalya · 2015
In WSN, due to continuous message passing, congestion and energy minimization are the primary issues which must be resolved. The base study deals with the efficient path selection for the mobile sink, which collects the data only from the rendezvous points (RP) in the WSN. The nodes which are not RPs will send the data to the nearest RP. Here the mobile sink travels in a specific path, so that nodes which are far from the RPs are unable to deliver the data (packet loss), because of which metrics like throughput, reliability and efficiency gets decreased. In the proposed technique, a novel scheme called HRP (Heuristic based Representative Point selection), a Grid based Dynamic Routes with multiple mobile sinks is proposed for periodic data collection from WSN. Unlike the existing solutions, it improves the data delivery performance by employing multiple mobile sinks and reduces the congestion considerably, the proposed scheme does not allow packet drop at such situation. Thus the reduction in packet loss ratio reduces the number of retransmission, which saves the energy of sensor node and improves the network lifetime. It aims to optimize the trade-off between nodes energy consumption and data delivery.