Abstract
In energy-harvesting wireless sensor networks (EH-WSNs), node can harvest energy from the environment. However, the energy harvested is usually insufficient, time varying and unbalanced. In order to make full use of the energy harvested from the environment, each node can dynamically adjust its transmission power which may affect the associated link quality. Thus, the link quality between two same nodes is dynamic. For the forwarding node, the transmission cost of it and its one hop candidate relay node may change at any time. In this scenario, for the design of opportunistic routing, the size, members and priorities in the relay set need to be updated dynamically. In this paper, we propose an opportunistic routing in EH-WSNs with dynamic transmission power (ORDTP). ORDTP can help the sending node collect information of neighbor nodes in time, accurately estimate the transmission cost, and dynamically update the size, members and priorities in the relay set. The simulation results show that ORDTP can effectively reduce the delay, improve the transmission success rate, and reduce the packet redundancy rate.
Highlights
Energy-harvesting wireless sensor networks (EH-WSNs) is a new kind of network technology, which can collect, process and summarize the relevant information in the detection region [1]
EH-WSNs remove the limit of limited battery power in WSNs, and has better performance and longer life-time, which can be widely used in environmental monitoring, industrial control, intelligent home and other fields
We propose an opportunistic routing in EH-WSNs with dynamic transmission power (ORDTP)
Summary
Energy-harvesting wireless sensor networks (EH-WSNs) is a new kind of network technology, which can collect, process and summarize the relevant information in the detection region [1]. The above schemes cannot adjust the transmission power of nodes accurately by the energy condition, which may limit the network performance in EH-WSNs. In this paper, we propose an opportunistic routing in EH-WSNs with dynamic transmission power (ORDTP). The opportunistic packet (re)transmission scheme in ORDTP can help the forwarder select the appropriate forwarding paths, which improve the performance in EH-WSNs. The transmission power adjustment scheme in ORDTP bases on the energy acquisition prediction, and can balance the energy acquisition and consumption effectively in EH-WSNs. The major contributions of this paper are as follows: 1) We propose a novel relay set selection scheme for ORDTP, which can help forwarder estimate accurately the transmission cost in EH-WSNs with dynamic transmission power, and select the appropriate relay set.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
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 call