Abstract:
Renewable energy like solar radiation can be employed for extending the lifespan of a
wireless sensor network (WSN) node. Such systems have made it feasible to manage
the energy constrain su ered by traditional Wireless Sensor Networks. Instead of only
maximizing the network lifetime with a nite amount of energy as in battery-powered
network, objective of EH-WSN networking protocols turns into assurance of perpetual
network operation. Signi cant role of route selection strategy in assurance of perpet-
ual network operation in EH-WSNs has inspired us to design a set of e cient routing
metrics for EH-WSNs to meet desired objective. Assurance of both maximized network
remaining energy and balanced energy depletion are two promising requisites to have
perpetual network operation. Our proposed routing metric called Energy Depletion
(ED) minimizes the wastage of energy in network with minimum overhead and maxi-
mizes the total network remaining energy. Secondly, proposed metric named Fraction
of Energy Depletion (FED) eliminates the unbalanced energy depletion problem from
network . Finally our routing metric named Prioritized FED (PFED) achieves both
bene ts proportionally by doing a perfect trade o between these two goals.
