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Current networking integrates common "Things" to the Web, creating the Internet of Things (IoT). The considerable number of heterogeneous Things that can be part of an IoT network demands an efficient management of resources. With the advent of Fog computing, some IoT management tasks can be distributed toward the edge of the constrained networks, closer to physical devices. Blockchain protocols...
Current IoT systems tend to be cloud-centric which in turn introduces network latency and constrained interaction with sensors and actuators. This paper presents the idea of using restful micro-services called Virtual Resources. A Virtual Resource is a software-defined IoT management construct that enables multi-tenancy support and load distribution onto edge hosts. The paper presents a performance...
IoT systems that support multi-tenancy tend to use cloud-hosted device/thing abstraction or virtualization. By abstracting the IoT edge components e.g. as data streams or by virtualizing the sensors/actuators, it becomes possible to avoid or resolve access conflicts. However, by using hosting the abstractions/virtualizations away from the edge components in the cloud, significant latency is introduced...
A blockchain is a distributed and decentralized ledger that contains connected blocks of transactions. Unlike other ledger approaches, blockchain guarantees tamper proof storage of approved transactions. Due to its distributed and decentralized organization, blockchain is beeing used within IoT e.g. to manage device configuration, store sensor data and enable micro-payments. This paper presents the...
The study and development of Internet of Things (IoT) applications, web and mobile, is on the increase. Applications, working with data obtained from different areas such as transportation, smart homes, health care, public services, industry and many others. Previous studies have focused on managing the obtained data. However, managing the heterogeneous resources that get that data is an area that...
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