Experimental Study of a Cross-Layer Designed Data Collection Mechanism for WSN in NTU Hospital
Date Issued
2011
Date
2011
Author(s)
Wu, Ling-Yen
Abstract
As the elder population grows, elder care becomes a major concern in society and nursing staff shortage also becomes a problem. To solve the problems, we deploy a WSN in the elder care center of National Taiwan University Hospital Beihu Branch. Considering both the reliability and real-time data availability, for now, the data collection protocol in Beihu is Magnetic Diffusion (MD). In order to reduce collisions and achieve high delivery rate, we think about replacing MD with Cross-Layer Diffusion (XD), whose MAC is a hybrid of TDMA and CSMA to avoid collisions. In this work, we implement XD on a 24-node IEEE 802.15.4-based sensor network testbed and on Beihu, where the protocol uses, and analyze its performance and compare it with MD. We find that: (1) limited by the hardware, the performance of XD is not as good as the results in simulation. (2) MD is still more appropriate than XD in the real-time applications in Beihu.
Subjects
Wireless Sensor Network
Data Collection
Cross-Layer Design
Experimentation
Type
thesis
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