Network Coded Cooperative Communication in a Real-Time Wireless Hospital Sensor Network
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The paper presents a network coded cooperative communication (NC-CC) enabled wireless hospital sensor network architecture for monitoring health as well as postural activities of a patient. A wearable device, referred as a smartband is interfaced with pulse rate, body temperature sensors and an accelerometer along with wireless protocol services, such as Bluetooth and Radio-Frequency transceiver and Wi-Fi. The energy efficiency of wearable device is improved by embedding a linear acceleration based transmission duty cycling algorithm (NC-DRDC). The real-time demonstration is carried-out in a hospital environment to evaluate the performance characteristics, such as power spectral density, energy consumption, signal to noise ratio, packet delivery ratio and transmission offset. The resource sharing and energy efficiency features of network coding technique are improved by proposing an algorithm referred as network coding based dynamic retransmit/rebroadcast decision control (LA-TDC). From the experimental results, it is observed that the proposed LA-TDC algorithm reduces network traffic and end-to-end delay by an average of 27.8% and 21.6%, respectively than traditional network coded wireless transmission. The wireless architecture is deployed in a hospital environment and results are then successfully validated.
KeywordsSmartband Wireless hospital sensor network Network coding based dynamic retransmit/rebroadcast decision control (NC-DRDC) Linear acceleration based transmission duty cycling decision control (LA-TDC) False alarm prevention
The authors gratefully acknowledge the financial support from Science for Equity Empowerment and Development Division under Department of Science and Technology, New Delhi, India by sanctioning a project - File No.: SSD/TISN/047/2011-TIE (G) to Velammal Engineering College, Chennai.
Compliance with ethical standards
Disclosure of potential conflicts of interest
All authors of this manuscript declare as they do have no conflict of interest with any Laboratory, Funding Source or an Individual.
Research involving human participants and/or animals and informed consent
The parameters measured are pulse rate, body temperature and acceleration (body movement) by using non-invasive sensors and collected information not used for any prescription and diagnostic purposes. Further, Informed consent was obtained from all individual participants included in the study.
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