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Sensors 2017, 17(11), 2493; https://doi.org/10.3390/s17112493

Multi-Source Cooperative Data Collection with a Mobile Sink for the Wireless Sensor Network

School of Microelectronics, Tianjin University, Tianjin 300072, China
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Author to whom correspondence should be addressed.
Academic Editor: Jaime Lloret Mauri
Received: 25 August 2017 / Revised: 22 October 2017 / Accepted: 25 October 2017 / Published: 30 October 2017
(This article belongs to the Special Issue Smart Communication Protocols and Algorithms for Sensor Networks)
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Abstract

The multi-source cooperation integrating distributed low-density parity-check codes is investigated to jointly collect data from multiple sensor nodes to the mobile sink in the wireless sensor network. The one-round and two-round cooperative data collection schemes are proposed according to the moving trajectories of the sink node. Specifically, two sparse cooperation models are firstly formed based on geographical locations of sensor source nodes, the impairment of inter-node wireless channels and moving trajectories of the mobile sink. Then, distributed low-density parity-check codes are devised to match the directed graphs and cooperation matrices related with the cooperation models. In the proposed schemes, each source node has quite low complexity attributed to the sparse cooperation and the distributed processing. Simulation results reveal that the proposed cooperative data collection schemes obtain significant bit error rate performance and the two-round cooperation exhibits better performance compared with the one-round scheme. The performance can be further improved when more source nodes participate in the sparse cooperation. For the two-round data collection schemes, the performance is evaluated for the wireless sensor networks with different moving trajectories and the variant data sizes. View Full-Text
Keywords: wireless sensor networks; mobile sink node; cooperative communications; sparse cooperation; distributed low-density parity-check codes wireless sensor networks; mobile sink node; cooperative communications; sparse cooperation; distributed low-density parity-check codes
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Han, C.; Yang, J. Multi-Source Cooperative Data Collection with a Mobile Sink for the Wireless Sensor Network. Sensors 2017, 17, 2493.

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