Abstract
In this paper, a new energy-efficient and reliable routing protocol is introduced for WSNs including a stochastic traffic generation model and a wakeup/sleep mechanism. Our objective is to improve the longevity of the WSNs by energy balancing but providing reliable packet transfer to the Base Station at the same time. The proposed protocol is based on the principle of the back-pressure method and besides the difference of backlogs, in order to optimize energy consumption, we use a cost function related to an entropy like function defined over the residual energies of the nodes. In the case of two-hop routing the optimal relay node is selected as the one which has maximum backlog difference and keeps the distribution of residual energy as close to uniform as possible where the uniformity is measured by the change of the entropy of the residual energy of the nodes. The protocol assumes Rayleigh fading model. Simulation results show that the proposed algorithm significantly improves the performance of traditional back-pressure protocol with respect to energy efficiency, E2E delay and throughput, respectively.
Highlights
Wireless sensors networks (WSNs) consist of small, cheap, and low powered nodes, each of them having a wireless radio transceiver, a limited processing unit, and application-specific sensors [1]
In our previous work [20], we showed that optimal path is the one over which a packet is sent to the BS where the minimum residual energy is maximum subject to the constraint that the packet will reach the BS successfully with a given probability, which means that the distribution of the residual energy falls close to uniform
In our algorithm for WSNs with stochastic packet generation, we propose back-pressure based algorithm, but the weight of the link will depend on the differential backlog for both ends of the link, and the change of the entropy of residual energy of the chain
Summary
Wireless sensors networks (WSNs) consist of small, cheap, and low powered nodes, each of them having a wireless radio transceiver, a limited processing unit, and application-specific sensors [1]. The energy efficiency is a critical issue in WSNs because the nodes operate by batteries, which are difficult to be replaced, and the data is transmitted to the Base Station via unreliable radio channels where fading and noise corrupt them. We propose (BPEEBP), a new energy-efficient and reliable routing algorithm which is based on back-pressure and the entropy of the residual energy. The proposed protocol improves energy efficiency concerning the total consumed energy and enforcing uniform energy distribution among the nodes; eliminating the formation of the bottleneck nodes. It is aware of influential issues such as the limited storage space of the node, end-to-end delay, and congestion occurrence
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
