No abstract

No abstract

No abstract

Abstract-The Wireless Sensor Networks (WSN) have been envisioned to help in numerous monitoring applications. Pulsed battery discharge from the nodes prolongs the battery capacity as compared to constant discharge. Idle time between the pulses of discharge helps in recovering the discharged battery capacity. In the hierarchical routing protocol, cluster head nodes expend much higher energy than other nodes without any idle time.In this paper, we are proposing a Hierarchical-Battery Aware Routing (H-BAR) protocol for the WSNs. To make discharge from the nodes as pulsed as possible, role of cluster heads is changed periodically between the nodes. Battery recovery capacity depends on the remaining capacities of the battery. Nodes with the higher remaining capacities will have a higher probability of recovering than the nodes with the lower remaining capacities. Hence, to improve the recovery capacity, discharge from each node should be as uniform as possible. In the previous hierarchical routing protocols, such as LEACH, periodic selection of cluster heads is done probabilistically. Probabilistic election does not provide uniform discharge from the nodes. In the H-BAR, to provide uniform discharge, nodes with the higher remaining capacities are chosen as the cluster heads. Simulations show that H-BAR can improve the lifetime of the WSN up to 3 times over the lifetime of the WSN using the LEACH protocol.

No abstract