Paper Info
Title
An Entropy Evaluation Algorithm to Improve Transmission Efficiency of Compressed Data in Pervasive Healthcare Mobile Sensor Networks.
Abstract
Data transmission is the most critical operation for mobile sensors networks in term of energy waste. Particularly in pervasive healthcare sensors network it is paramount to preserve the quality of service also by means of energy saving policies. Communication and data transmission are among the most critical operation for such devises in term of energy waste. In this paper we present a novel approach to increase battery life-span by means of shorter transmission due to data compression. On the other hand, since this latter operation has a non-neglectable energy cost, we developed a compression efficiency estimator based on the evaluation of the absolute and relative entropy. Such algorithm provides us with a fast mean for the evaluation of data compressibility. Since mobile wireless sensor networks are prone to battery discharge-related problems, such an evaluation can be used to improve the electrical efficiency of data communication. In facts the developed technique, due to its independence from the string or file length, is extremely robust both for small and big data files, as well as to evaluate whether or not to compress data before transmission. Since the proposed solution provides a quantitative analysis of the source's entropy and the related statistics, it has been implemented as a preprocessing step before transmission. A dynamic threshold defines whether or not to invoke a compression subroutine. Such a subroutine should be expected to greatly reduce the transmission length. On the other hand a data compression algorithm should be used only when the energy gain of the reduced transmission time is presumably greater than the energy used to run the compression software. In this paper we developed an automatic evaluation system in order to optimize the data transmission in mobile sensor networks, by compressing data only when this action is presumed to be energetically efficient. We tested the proposed algorithm by using the Canterbury Corpus as well as standard pictorial data as benchmark test. The implemented system has been proven to be time-inexpensive with respect to a compression algorithm. Finally the computational complexity of the proposed approach is virtually neglectable with respect to the compression and transmission routines themselves.
Year
DOI
Venue
2020
10.1109/ACCESS.2019.2962771
IEEE ACCESS
Keywords
Field
DocType
Wireless sensor networks,data compression,entropy,quality of service,energy saving,quality prediction,differential information entropy
Data transmission,Subroutine,Computer science,Quality of service,Real-time computing,Transmission time,Data compression,Big data,Wireless sensor network,Distributed computing,Computational complexity theory
Journal
Volume
ISSN
Citations 
8
2169-3536
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Giacomo Capizzi16011.94
Salvatore Coco212.39
Grazia Lo Sciuto3428.75
Christian Napoli420124.64
Waldemar Holubowski500.34