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Network Coded Cooperative Communication in a Real-Time Wireless Hospital Sensor Network.

R Prakash1, A Balaji Ganesh2, Somu Sivabalan3

  • 1Electronic System Design Laboratory, TIFAC-CORE, Velammal Engineering College, Chennai, India.

Journal of Medical Systems
|March 18, 2017
PubMed
Summary

This study introduces a smartband system for patient monitoring using network coded cooperative communication (NC-CC). The novel LA-TDC algorithm enhances energy efficiency and reduces network traffic and delay in wireless hospital sensor networks.

Keywords:
False alarm preventionLinear acceleration based transmission duty cycling decision control (LA-TDC)Network coding based dynamic retransmit/rebroadcast decision control (NC-DRDC)SmartbandWireless hospital sensor network

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Area of Science:

  • Biomedical Engineering
  • Wireless Communication Systems
  • Network Coding

Background:

  • Wireless sensor networks are crucial for remote patient monitoring.
  • Existing systems face challenges in energy efficiency and network traffic management.
  • Network coding offers potential for improved resource utilization in wireless networks.

Purpose of the Study:

  • To develop a network coded cooperative communication (NC-CC) enabled wireless hospital sensor network architecture.
  • To improve the energy efficiency of wearable devices using a linear acceleration-based transmission duty cycling algorithm (NC-DRDC).
  • To introduce a network coding based dynamic retransmit/rebroadcast decision control (LA-TDC) algorithm for enhanced resource sharing and energy efficiency.

Main Methods:

  • Designed a wearable smartband integrated with physiological sensors (pulse rate, body temperature) and an accelerometer.
  • Implemented wireless protocols including Bluetooth, Radio-Frequency transceiver, and Wi-Fi.
  • Developed and evaluated the NC-DRDC and LA-TDC algorithms in a real-time hospital environment.
  • Assessed performance metrics: power spectral density, energy consumption, signal-to-noise ratio, packet delivery ratio, and transmission offset.

Main Results:

  • The proposed LA-TDC algorithm demonstrated significant improvements over traditional network coded wireless transmission.
  • Network traffic was reduced by an average of 27.8%.
  • End-to-end delay was reduced by an average of 21.6%.

Conclusions:

  • The developed wireless architecture effectively monitors patient health and postural activities.
  • The LA-TDC algorithm enhances energy efficiency and reduces network overhead in wireless hospital sensor networks.
  • The system's performance was validated through real-time deployment and experimentation in a hospital setting.