TITLE:
An Energy-Efficient Duty-Cycled Wake-Up Radio Protocol for Avoiding Overhearing in Wireless Sensor Networks
AUTHORS:
Jean Mickael Lebreton, Somasekhar Kandukuri, Nour Murad, Richard Lorion
KEYWORDS:
Wireless Sensor Networks, Wake-Up Radio, MAC Protocol, Energy Efficiency, Duty Cycling
JOURNAL NAME:
Wireless Sensor Network,
Vol.8 No.8,
August
16,
2016
ABSTRACT: Wake-up radio (WuR) system is often
presented as the best candidate for replacing traditional duty cycled Medium
Access Control (MAC) protocols in Wireless Sensor Networks (WSNs). The Double
Radio (DoRa) protocol is a new MAC protocol for in-band WuR system with
addressing capabilities. While the DoRa protocol improves the WSNs energy
efficiency, it still suffers from an overhearing problem when the WuR system is
very often requested. The WuR wastes a noticeable amount of energy when
overhearing to wake-up demand intended to other nodes, but it is neither
measured nor solved in other works. In this paper, an adaptive duty-cycled DoRa
(DC-DoRa) is then proposed to solve the overhearing problem. The primary
concept of the work is to enable the WuR functionality before the node is
addressed and to disable the WuR after the node sent data. Extensive
simulations under OMNeT++ using real input parameters are then performed to
show the significant energy-savings through the two protocols and the nearly
suppression of overhearing with DC-DoRa. In fact, the mean power consumption is
three-order below using the DoRa protocol compared to traditional MAC
protocols. While overhearing can represent up to 93% of the WuR energy
consumption with the DoRa protocol, it is reduced to only 1% with the DC-DoRa
protocol.