Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/7354
Título: Impact of sensor nodes scaling and velocity on handover mechanisms for healthcare wireless sensor networks with mobility support
Autor: Caldeira, João
Rodrigues, Joel J.P.C.
Lorenz, Pascal
Ullah, Sana
Palavras-chave: Body sensor networks
Healthcare applications
Healthcare wireless sensor networks
Mobile health
Data: Mai-2015
Editora: Elsevier
Relatório da Série N.º: Computers in Industry;Vol. 69
Resumo: Health promotion in hospital environments can be improved using the most recent information and communication technologies. The Internet connectivity to small sensor nodes carried by patients allows remote access to their bio-signals. To promote these features the healthcare wireless sensor networks (HWSN) are used. In these networks mobility support is a key issue in order to keep patients under realtime monitoring even when they move around. To keep sensors connected to the network, they should change their access points of attachment when patients move to a new coverage area along an infirmary. This process, called handover, is responsible for continuous network connectivity to the sensors. This paper presents a detailed performance evaluation study considering three handover mechanisms for healthcare scenarios (Hand4MAC, RSSI-based, and Backbone-based). The study was performed by simulation using several scenarios with different number of sensors and different moving velocities of sensor nodes. The results show that Hand4MAC is the best solution to guarantee almost continuous connectivity to sensor nodes with less energy consumption.
Peer review: yes
URI: http://hdl.handle.net/10400.22/7354
DOI: doi:10.1016/j.compind.2014.09.002
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0166361514001729
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