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Internet-of-Things (IoT) deployments increasingly incorporate long range communication technologies. To support this transition, wide area IoT deployments are employing LoRa as their communication technology of choice due to its low power consumption and long range. The security of LoRa networks and devices is currently being put to the test in the wild, and has already become a major challenge. New...
Internet of Things (IoT) consists of networked tiny embedded computers (motes) that are capable of monitoring and controlling the physical world. Examples range from building security monitoring to smart factories. A central problem of IoT is minimising the energy consumption of the motes, while guaranteeing high packet delivery performance, regardless of uncertainties such as sudden changes in traffic...
The Internet of Things (IoT) is being applied in a wide variety of applications, which demand a range of networking support. This includes wide area communication networks. Novel long range network technologies such as LoRa and Sigfox are emerging, but they remain difficult to deploy and configure for end-users who are not specialists in embedded systems. This paper addresses this problem by introducing...
The Internet of Things (IoT) is being applied in a wide variety of applications, which demand a range of networking support, including long range technologies. Unfortunately, emerging long range IoT platforms are difficult to deploy and configure for end-users who are not IoT specialists. This paper addresses this problem by introducing μPnP-WAN, which combines the ease of use of the μPnP peripheral...
The Internet of Things (IoT) embeds sensors, actuators and computation into everyday 'things' such as lights and thermostats. These things form low-power wireless networks connecting to the Internet via IPv6 for monitoring and control. Such IoT systems are increasingly subject to runtime reconfiguration, wherein new hardware and software may be installed dynamically to accommodate changing application...
The aggregation of network traffic has been shown to enhance the performance of wireless sensor networks. By reducing the number of packets that are transmitted, energy consumption, collisions and congestion are minimised. However, current data aggregation schemes restrict developers to a specific network structure or cannot handle multi-hop data aggregation. In this paper, we propose Hitch Hiker,...
Wireless Sensor Networks (WSN) are evolving beyond research prototypes towards real world deployments in various application domains. While prior research has resulted in a range of operating systems and associated programming languages, a comprehensive empirical analysis of WSN operating systems is missing from the literature. We address this problem through an empirical study of all actively maintained...
Many embedded systems have complex timing constraints and, at the same time, have flexibility requirements which prohibit offline planning of the entire system. To support a mixture of time-triggered and event-triggered tasks, some industrial systems deploy a real-time operating system (RTOS) with a table-driven dispatcher complemented with a preemptive scheduler to allocate free time slots to event-driven...
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