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Value-Based Caching in Information-Centric Wireless Body Area Networks

We propose a resilient cache replacement approach based on a Value of sensed Information (VoI) policy. To resolve and fetch content when the origin is not available due to isolated in-network nodes (fragmentation) and harsh operational conditions, we exploit a content caching approach. Our approach...

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Autores principales: Al-Turjman, Fadi M., Imran, Muhammad, Vasilakos, Athanasios V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5298754/
https://www.ncbi.nlm.nih.gov/pubmed/28106817
http://dx.doi.org/10.3390/s17010181
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author Al-Turjman, Fadi M.
Imran, Muhammad
Vasilakos, Athanasios V.
author_facet Al-Turjman, Fadi M.
Imran, Muhammad
Vasilakos, Athanasios V.
author_sort Al-Turjman, Fadi M.
collection PubMed
description We propose a resilient cache replacement approach based on a Value of sensed Information (VoI) policy. To resolve and fetch content when the origin is not available due to isolated in-network nodes (fragmentation) and harsh operational conditions, we exploit a content caching approach. Our approach depends on four functional parameters in sensory Wireless Body Area Networks (WBANs). These four parameters are: age of data based on periodic request, popularity of on-demand requests, communication interference cost, and the duration for which the sensor node is required to operate in active mode to capture the sensed readings. These parameters are considered together to assign a value to the cached data to retain the most valuable information in the cache for prolonged time periods. The higher the value, the longer the duration for which the data will be retained in the cache. This caching strategy provides significant availability for most valuable and difficult to retrieve data in the WBANs. Extensive simulations are performed to compare the proposed scheme against other significant caching schemes in the literature while varying critical aspects in WBANs (e.g., data popularity, cache size, publisher load, connectivity-degree, and severe probabilities of node failures). These simulation results indicate that the proposed VoI-based approach is a valid tool for the retrieval of cached content in disruptive and challenging scenarios, such as the one experienced in WBANs, since it allows the retrieval of content for a long period even while experiencing severe in-network node failures.
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spelling pubmed-52987542017-02-10 Value-Based Caching in Information-Centric Wireless Body Area Networks Al-Turjman, Fadi M. Imran, Muhammad Vasilakos, Athanasios V. Sensors (Basel) Article We propose a resilient cache replacement approach based on a Value of sensed Information (VoI) policy. To resolve and fetch content when the origin is not available due to isolated in-network nodes (fragmentation) and harsh operational conditions, we exploit a content caching approach. Our approach depends on four functional parameters in sensory Wireless Body Area Networks (WBANs). These four parameters are: age of data based on periodic request, popularity of on-demand requests, communication interference cost, and the duration for which the sensor node is required to operate in active mode to capture the sensed readings. These parameters are considered together to assign a value to the cached data to retain the most valuable information in the cache for prolonged time periods. The higher the value, the longer the duration for which the data will be retained in the cache. This caching strategy provides significant availability for most valuable and difficult to retrieve data in the WBANs. Extensive simulations are performed to compare the proposed scheme against other significant caching schemes in the literature while varying critical aspects in WBANs (e.g., data popularity, cache size, publisher load, connectivity-degree, and severe probabilities of node failures). These simulation results indicate that the proposed VoI-based approach is a valid tool for the retrieval of cached content in disruptive and challenging scenarios, such as the one experienced in WBANs, since it allows the retrieval of content for a long period even while experiencing severe in-network node failures. MDPI 2017-01-19 /pmc/articles/PMC5298754/ /pubmed/28106817 http://dx.doi.org/10.3390/s17010181 Text en © 2017 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Al-Turjman, Fadi M.
Imran, Muhammad
Vasilakos, Athanasios V.
Value-Based Caching in Information-Centric Wireless Body Area Networks
title Value-Based Caching in Information-Centric Wireless Body Area Networks
title_full Value-Based Caching in Information-Centric Wireless Body Area Networks
title_fullStr Value-Based Caching in Information-Centric Wireless Body Area Networks
title_full_unstemmed Value-Based Caching in Information-Centric Wireless Body Area Networks
title_short Value-Based Caching in Information-Centric Wireless Body Area Networks
title_sort value-based caching in information-centric wireless body area networks
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5298754/
https://www.ncbi.nlm.nih.gov/pubmed/28106817
http://dx.doi.org/10.3390/s17010181
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