Information Technology Reference
In-Depth Information
Chapter 17
A Cooperative Routing
Algorithm to Increase QoS in
Wireless E-Healthcare Systems
Sabato Manfredi
University of Naples Federico II, Italy
ABSTRACT
The recent increased interest in distributed and flexible wireless pervasive applications has drawn great
attention to WNCS (Wireless Networked Control Systems) architectures based on WSANs (Wireless
Sensor and Actuator Networks) and the resulting Quality of Service obtained in specific applications.
Particularly, in wireless E-Healthcare systems based on WSANs, providing certain QoS specifications
is crucial for the actuators as they perform actions based on the vital data received from sensors. This
chapter is concerned with the performance evaluation of a cooperative routing algorithm QBAR (Queue
Based Ad hoc Routing algorithm) for wireless E-Healthcare systems. Simulations have been carried out
in order to quantify the impact of the proposed algorithm on the overall network performance, and a
comparison with the existing AODV algorithm is presented. The algorithm performances are validated
by the Matlab/Simulink-based simulator, TrueTime, which facilitates the co-simulation of controller task
execution in real-time kernels and in a wireless network environment. The simulation results highlight
that “cooperation” strategies between wireless healthcare devices can strongly improve the reliability
of the wireless network, and hence, they are suitable and rewarding for the management of the future
generation of E-Healthcare systems.
INTRODUCTION
WSANs (TF, (2004)). Wireless data communica-
tion networks provide reduced costs, better power
management, easier maintenance and effortless
deployment in remote and hard-to-reach areas.
Although WSAN research was originally under-
taken for military applications, as the field slowly
The recent increased interest in distributed and
flexible wireless pervasive applications has drawn
great attention to the QoS (Quality of Service)
requirements of WNCS architectures based on
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