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Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
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Value-Based Caching in Information-Centric Wireless Body Area Networks.

Fadi M Al-Turjman1, Muhammad Imran2, Athanasios V Vasilakos3

  • 1Department of Computer Engineering, Middle East Technical University, Northern Cyprus Campus, 99738 Kalkanli, Güzelyurt, Mersin 10, Turkey. fadi@metu.edu.tr.

Sensors (Basel, Switzerland)
|January 21, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a resilient cache replacement strategy using a Value of sensed Information (VoI) policy for Wireless Body Area Networks (WBANs). The approach ensures data availability during network fragmentation and harsh conditions by prioritizing valuable information.

Keywords:
FIFOInformation-Centric NetworksLRUWireless Body Area Networkscaching

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Area of Science:

  • Computer Science
  • Biomedical Engineering
  • Network Engineering

Background:

  • Wireless Body Area Networks (WBANs) face challenges with data retrieval due to network fragmentation and harsh operational conditions.
  • Content caching is crucial for ensuring data availability when direct access to the origin is not possible.

Purpose of the Study:

  • To propose a resilient cache replacement approach for WBANs to enhance content availability.
  • To ensure retrieval of valuable and difficult-to-access data even during network failures.

Main Methods:

  • A novel Value of sensed Information (VoI) policy is developed for cache replacement.
  • The policy considers data age, request popularity, communication interference cost, and sensor node active duration.
  • Data is assigned a value to determine its retention duration in the cache.

Main Results:

  • The proposed VoI-based caching strategy significantly improves the availability of valuable data in WBANs.
  • Simulations demonstrate superior performance compared to existing schemes under various WBAN conditions, including node failures.
  • The approach effectively retrieves cached content for extended periods in disruptive scenarios.

Conclusions:

  • The VoI-based cache replacement policy is a robust solution for WBANs, particularly in challenging and failure-prone environments.
  • This strategy enhances data accessibility and reliability in critical healthcare monitoring applications.
  • The approach ensures that the most valuable sensed information remains accessible when needed.