An improved algorithm for dispatching the minimum number of electric charging vehicles for wireless sensor networks
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 1371-1384 |
Journal / Publication | Wireless Networks |
Volume | 25 |
Issue number | 3 |
Publication status | Published - 15 Apr 2019 |
Externally published | Yes |
Link(s)
Abstract
The very limited sensor battery energy greatly hinders the large-scale, long-term deployments of wireless sensor networks. This paper studies the problem of scheduling the minimum charging vehicles to charge lifetime-critical sensors in a wireless rechargeable sensor network, by utilizing the breakthrough wireless charging technology. Existing studies still employ a number of charging vehicles to charge sensors. The purchase cost of a charging vehicle however is not inexpensive. To further reduce the number of employed charging vehicles, we propose a novel approximation algorithm, by exploring the combinatorial properties of the problem. The techniques exploited in this paper are essentially different from that in existing studies. Not only do we show that the approximation ratio of the proposed algorithm is much better than that of the state-of-the-art, but also extensive experimental results demonstrate that the number of scheduled charging vehicles by the proposed algorithm is at least 10% less than that by the existing algorithms and the total travel energy consumption of the charging vehicles is also smaller than that by the existing algorithms.
Research Area(s)
- Approximation algorithm, Minimum number of dispatched charging vehicles, Wireless energy transfer, Wireless sensor networks
Bibliographic Note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
Citation Format(s)
An improved algorithm for dispatching the minimum number of electric charging vehicles for wireless sensor networks. / Zhang, Qing; Xu, Wenzheng; Liang, Weifa et al.
In: Wireless Networks, Vol. 25, No. 3, 15.04.2019, p. 1371-1384.
In: Wireless Networks, Vol. 25, No. 3, 15.04.2019, p. 1371-1384.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review