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A Platform to Emulate Ambient Assisted Living Environments
Gama, Óscar; Simões, RicardoAccording to the opinion of clinicians, emerging medical conditions can be timely detected by observing changes in the activities of daily living and/or in the physiological signals of a person. To accomplish such purpose, it is necessary to properly monitor both the person’s physiological signals as well as the home environment with sensing technology. Wireless sensor networks (WSNs) are a promising technology...
A Model to Improve the Accuracy of WSN Simulations
Gama, Oscar; Carvalho, Paulo; Mendes, P. M.Simulation studies have been extensively adopted in the networking research community. Nevertheless, the performance of the software components running within the network devices is often not modeled by generic network simulators. This aspect is particularly important in wireless sensor networks (WSN). As motes present very limited computing resources, the overhead of the software components cannot be ignored. ...
Modelling the impact of software components on wireless sensor network performance
Gama, Oscar; Carvalho, Paulo; Mendes, P. M.Network Simulators are often used to study multiple aspects of data communications in distinct scenarios, including wireless sensor networks (WSN). However, the performance of the software components running in the network nodes is normally neglected by the simulators. This aspect is particularly important in WSNs, as nodes have very limited computing resources. In order to study the impact of software componen...
A MAC protocol for quality of service provisioning in adaptive biomedical wirel...
Gama, OscarDoctorate program on Electronics and Computer Engineering ; New healthcare solutions are being explored to improve the quality of care and the quality of life of patients, as well as the sustainability and efficiency of the healthcare services. In this context, wireless sensor networks (WSNs) constitute a key technology for closing the loop between patients and healthcare providers, as WSNs provide sensing abi...
A time-slot scheduling algorithm for e-health wireless sensor networks
Gama, Oscar; Carvalho, Paulo; Mendes, P. M.http://www.ieee-healthcom.org/2010/about.html ; For e-health wireless sensor networks presenting significant traffic loads, MAC protocols based on deterministic scheduling algorithms are consensually considered more adequate than protocols based on random access algorithms. Indeed, TDMA-based MAC protocols are able to control the delay bound and save power by eliminating collisions. However, these protocols al...
A platform with combined environmental and physiological wireless data acquisit...
Gama, Oscar; Martins, H.; Pereira, C.; Soares, S.; Valente, A.; Ribeiro, V. S.; Carvalho, Paulo; Mendes, P. M.http://isami2010.di.uminho.pt/ ; Ambient Assisted Living is based on a set of technologies with the aim to provide an enhanced support to people’s daily life. One important field deals with the offer of new solutions for healthcare. Those solutions intend to improve the population quality of life and reduce costs associated with healthcare. Before that happens, new platforms, hardware and software, must be ava...
An improved MAC Protocol with reconfiguration scheme for Wireless e-Health Syst...
Gama, Oscar; Afonso, José A.; Carvalho, Paulo; Mendes, P. M.To provide a reliable assistance to patients, emergency and intensive care systems have increased demands for quality of service at different levels, including at the MAC layer. The Low Power Real Time (LPRT) MAC protocol presents suitable characteristics to address these demands due to its efficient bandwidth allocation, low energy consumption, and bounded latency. Yet, this MAC protocol may still present a si...
Trade-off analysis of a MAC protocol for wireless e-Emergency systems
Gama, Oscar; Carvalho, Paulo; Afonso, José A.; Mendes, P. M.Wireless sensor networks are envisioned to be deployed in healthcare. Since emergency and intensive care applications need to assure reliable and timely data delivery, they have increased demands for quality of service, including at the MAC layer. Amongst MAC protocols available for WSNs, the Low Power Real Time (LPRT) presents suitable characteristics to be deployed in emergency platforms due to its rational b...
QoS deployment in wireless e-health and e-emergency : main issues and a case-study
Gama, Oscar; Carvalho, Paulo; Afonso, José A.; Mendes, P. M.Due to its critical nature, emergency healthcare (e-emergency) systems should be totally reliable, efficient and support real-time traffic. Therefore eemergency networks must provide proper quality of service (QoS) levels. After assessing the relevance of QoS deployment in different e-health contexts, this paper presents a pragmatic case-study intended to be deployed in a hospital room containing patients with ...
Quality of service support in wireless sensor networks for emergency health car...
Gama, Oscar; Carvalho, Paulo; Afonso, José A.; Mendes, P. M.The reliable and efficient operation of emergency healthcare (e-emergency) services poses quality demands to the systems and underlying communication infrastructures. In this context, most existing wireless body sensor networks fall short in meeting these demands as they only offer an unreliable service delivery. e-Emergency systems must provide quality of service (QoS) support so that a pervasive and trustable...
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