Charalampos Liolios

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The use of sensor networks for healthcare, well-being, and working in extreme environments has long roots in the engineering sector in medicine and biology community. With the growing needs in ubiquitous communications and recent advances in very-low-power wireless technologies, there has been considerable interest in the development and application of(More)
In this work, we consider a Zigbee wireless sensor network and study the effect of different network topologies on quality of service metrics such as throughput, end-to-end delay, and packet dropping. A campus building is selected as an experimentation testbed, where several end devices are placed, together with routers and a single coordinator. In this(More)
Quality of service (QoS) is an important task in the design of mobile communication systems. For UMTS system in order to realise a particular service, the QoS requirements in terms of performance and latency, have to be satisfied. Considering the QoS classification according to the priority of latency or performance, possible examples of service scenarios(More)
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