In this paper we show that RF transmissions using the physical layer of the “Long Range” (LoRa®) interface, and with some limitations also the data link and network layer Long Range Wide Area Network (LoRaWAN), are suitable even for extremely power-restricted devices, like energy-autonomous wireless sensor nodes (WSNs), if configured well. We analyse the most critical parameters and their influence on the power performance. This includes the outer circuitry, software and configuration of the transmitter SX1276 and the new SX1262. Based on that, we give specific advice to lower their power consumption and verify the impact of these measures with evaluations on an own build low power sensor node.
The present work describes how the concepts and foundations defined for multi-agent system technology can be applied in to a Wireless Sensor Network (WSN), specifically it is focused on how multi-agent system technology's mechanisms and implementations could facilitate the development of systems based on WSN. In this respect, an architectural model where the above mentioned concepts, foundations and mechanisms come together is proposed, in order to define applications and services on WSN. Validation of the proposed architecture is made by means of its use in a perimeter security scenario ("tracking"). It is important to mention, that partial results of this work have been developed in the project PROPSI (Perimeter Protection by means of Wireless Sensor Networks).
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