An Energy-Efficient Communication Scheme in Wireless Cable Sensor Networks
Abstract
Nowadays wireless sensor networks (WSNs) have
attracted a great deal of study due to their low cost and widerange
applications. Most of the sensors used so far are point
sensors which have a disc-shaped sensing region. In this paper,
we study a new type of sensor: the fiber optic cable sensor. Unlike
a traditional point sensor, this type of sensor has a rectangular
sensing region with a processor installed on it to do processing
and communication. Like wireless sensor networks with point
sensors, energy-efficient communication is still an important issue
in wireless sensor networks with cable sensors because of the
need to efficiently use limited resources. To address the issue,
we propose a Cable Mode Transition (CMT) algorithm, which
determines the minimal number of active sensors to maintain Kcoverage
of a terrain as well as K-connectivity of the network.
Specifically, it allocates periods of inactivity for cable sensors
without affecting the coverage and connectivity requirements of
the network based only on local information. Before presenting
CMT, we first show the relationship between coverage and
connectivity, then the eligibility algorithm permitting a cable
sensor to decide whether to stay active. CMT calls the eligibility
algorithm to schedule cables. Simulation results show that our
scheme is efficient in saving energy and thus can prolong the
lifetime of wireless cable sensor networks.
Description
This full text paper was peer reviewed at the direction of IEEE Communications Society subject matter experts for publication in the IEEE ICC 2011 proceedings
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