Title: Efficient data acquisition with wireless powered sensor networks for smart healthcare in hospitals

Authors: Jianing Li; Chao Zhai

Addresses: Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, Shandong, China ' School of Information Science and Engineering, Shandong University, Qingdao, 266237, Shandong, China

Abstract: With the development of smart healthcare, various sensors are invented and exploited to constantly monitor the conditions of patients and environments in hospitals. Wireless power transfer (WPT) is a promising technique to provide energy to sensors. We propose a WPT-based non-orthogonal cooperative transmission scheme for the data collection in hospitals. In the serving cell of each access point (AP), one energy harvesting (EH) node and one energy-sufficient (ES) node transmit data simultaneously by using the same spectrum, which is fully reused across all the cells. In order to improve the energy and data transmission efficiency, a power beacon is used to wirelessly charge the EH-node and help it forward data to the AP. Through properly modelling the energy statuses of nodes and the aggregate interference, we analyse the network area throughput. Extensive simulations are conducted to reveal the impacts of various parameters to the system performance.

Keywords: smart healthcare; non-orthogonal multiple access; cooperative relaying; wireless power transfer; WPT; energy harvesting; wireless sensor network; WSN.

DOI: 10.1504/IJSNET.2024.141778

International Journal of Sensor Networks, 2024 Vol.46 No.2, pp.73 - 86

Received: 13 Aug 2023
Accepted: 28 Jun 2024
Published online: 01 Oct 2024 *

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