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Sensors 2016, 16(6), 923; doi:10.3390/s16060923

A Type of Low-Latency Data Gathering Method with Multi-Sink for Sensor Networks

1,2,3,4,* , 1
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1,5
,
1,5
and
1,2,3
1
College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
2
Provincial Key Laboratory for Computer Information Processing Technology, Soochow University, Suzhou 215006, China
3
Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks, Nanjing 210003, China
4
Nanjing University of Information Science & Technology, Nanjing 210044, China
5
School of Engineering and Computation, New York Institute of Technology, New York 11568-8000, NY, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Mihai Lazarescu
Received: 4 April 2016 / Revised: 15 June 2016 / Accepted: 16 June 2016 / Published: 21 June 2016
(This article belongs to the Special Issue Data in the IoT: from Sensing to Meaning)

Abstract

To balance energy consumption and reduce latency on data transmission in Wireless Sensor Networks (WSNs), a type of low-latency data gathering method with multi-Sink (LDGM for short) is proposed in this paper. The network is divided into several virtual regions consisting of three or less data gathering units and the leader of each region is selected according to its residual energy as well as distance to all of the other nodes. Only the leaders in each region need to communicate with the mobile Sinks which have effectively reduced energy consumption and the end-to-end delay. Moreover, with the help of the sleep scheduling and the sensing radius adjustment strategies, redundancy in network coverage could also be effectively reduced. Simulation results show that LDGM is energy efficient in comparison with MST as well as MWST and its time efficiency on data collection is higher than one Sink based data gathering methods. View Full-Text
Keywords: Sensor Networks; mobile Sinks; low-latency; balance of energy consumption; redundancy on network coverage Sensor Networks; mobile Sinks; low-latency; balance of energy consumption; redundancy on network coverage
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sha, C.; Qiu, J.-M.; Li, S.-Y.; Qiang, M.-Y.; Wang, R.-C. A Type of Low-Latency Data Gathering Method with Multi-Sink for Sensor Networks. Sensors 2016, 16, 923.

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