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The next generation of mobile networks will utilise multiple radio access technologies. These heterogeneous wireless networks will enable the user to seamlessly roam between the different access technologies to maintain network connectivity and satisfactory QoS. Network operators will be able to select an access network on the arrival of a new call or(More)
PURPOSE The aim of this study was to determine the prevalence of summit success and acute mountain sickness (AMS) on Mt. Whitney (4419 m) and to identify variables that contribute to both. METHODS Hikers (N = 886) attempting the summit were interviewed at the trailhead upon their descent. Questionnaires included demographic and descriptive data,(More)
Today's mobile communication networks support not just simple mobile voice and data services but also access to mobile Internet-based services with varying bandwidth and quality-of-service requirements. The work presented in this article addresses this issue by proposing a management architecture for mobile user roaming based on efficient call admission and(More)
The next generation of mobile networks is expected to utilise multiple radio access technologies, seamlessly integrated to form a heterogeneous wireless network. On the arrival of a new call or inter-system handover request, the network operator must assign an access network to the user. Selecting the most optimal network from those available and(More)
In this paper we present the results of a study within the CRUISE Network of Excellence. Within CRUISE we have simulated a simple scenario for Wireless Sensor Networks with three different simulation tools: NS-2, OMNeT++ and OPNET. The scenario investigated is that of a fire fighter entering a building and deploying sensor nodes in different rooms. Data(More)
With the evolution toward 2.5G bringing a wide range of new services, it is expected that the tele-traffic demand on current GSM and IS136 networks will further increase. In this paper we propose a new pro-active resource allocation method of increasing cellular network capacity by introducing an adaptive radio resource management system into a typical(More)
This paper presents the work under investigation within the Embedded Networked Sensing (EmNetS) project funded by Enterprise Ireland under the WISen industry/academia consortium. The project addresses four main research areas within the embedded networked sensing space, namely, protocol stack development, middleware development, sensor network management(More)