WSEAS Transactions on Communications
Print ISSN: 1109-2742, E-ISSN: 2224-2864
Volume 20, 2021
Video-Like Lossless Compression of Data Cube for Big Data Query in
Wireless Sensor Networks
Authors: , , ,
Abstract: Wireless Sensor Networks (WSNs) contain many sensor nodes which are placed in chosen spatial area to temporally monitor the environmental changes. As the sensor data is big, it should be well organized and stored in cloud servers to support efficient data query. In this paper, we first adopt the streamed sensor data as "data cubes" to enhance data compression by video-like lossless compression (VLLC). With layered tree structure of WSNs, compression can be done on the aggregation nodes of edge computing. Then, an algorithm is designed to well organize and store these VLLC data cubes into cloud servers to support cost-effect big data query with parallel processing. Our experiments are tested by real-world sensor data. Results show that our method can save 94% construction time and 79% storage space to achieve the same retrieval time in data query when compared with a well-known database MySQL
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Keywords: Wireless sensor networks, Database storage, Video-like lossless compression, Parallel processing, Streamed sensor big data, Edge computing
Pages: 139-145
DOI: 10.37394/23204.2021.20.19