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The evolution of the new M2M/IoT paradigm suggests new applications in several fields. However, the unique characteristics of M2M communications pose different challenges in terms of connectivity and capacity with respect to the conventional telecommunications networks. In particular, the harmful locations where IoT devices could be deployed and the massive number of the devices to be connected require...
LTE technology, although traditionally defined for H2H (Human-to-Human) Communications, could be a good candidate for M2M (Machine-to-Machine) Communications. For this reason, the global 3GPP standard promotes in the recent Releases low complexity devices to support M2M applications. LTE-MTC (Machine-Type-Communications) and NB-IoT (Narrow Band Internet of Things) appear as promising solutions for...
In the recent years, advanced control techniques for power grid distribution have been provided in order to define a new concept of power grid management: the Smart Grid. Among of them, the use of Machine-to-Machine (M2M) will permit to define advanced monitoring system for the distribution grid. However, the unique characteristics of M2M communications pose a number of interesting challenges to the...
Particular attention has been recently devoted to Underwater Wireless Networks based on swarm configuration, in which decisions are taken in collaborative manner. Traditionally, underwater communications are based on acoustic signaling, with consequent drawbacks due to narrow band channel and multipath propagation effects. Performance improvement could be achieved by optical communications among the...
Underwater wireless networks have been deeply studied in the last few years. Particular attention has been recently devoted to swarm networks, which can operate and take decision in collaborative manner. In swarm networks, the limited distance between nodes can be exploited by implementing optical links when the characteristics of the communication channel make it possible. With respect to acoustic...
The acquisition and distribution of multimedia content, such as still images, audio and video streams, are the new frontier of wireless sensor networks (WSNs). Scalar data WSNs commonly rely on the IEEE 802.15.4 standard that defines suitable physical and medium access control layers, whereas wireless multimedia sensor networks (WMSNs) need advanced architectures able to maintain a predetermined level...
Fundamental key aspects of underwater acoustic communications have been taken into account to define an underwater swarm network for monitoring and exploration applications. We discuss the communication architecture of underwater sensor networks as well as the factors that influence underwater network design. Specifically, the main requirements needed to design a suitable sensors underwater system...
The scope of this work is to investigate the RF behavior of ZigBee devices operating within a real environment. On this purpose a Wireless Sensor Network (WSN) ZigBee based has been deployed in a specific indoor context. Three different RSSI measurement campaigns have been carried out to characterize the main propagation features. On the basis of the experimental results it has been possible to analyze...
The goal of the work is to investigate the Radio Frequency (RF) propagation of ZigBee devices operating within a hospital environment to analyze their real indoor behaviour to design healthcare systems. Different Received Signal Strength Inidcation (RSSI) measurement campaigns have been carried out to characterize the main propagation features. On the basis of the experimental results it has been...
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