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As the Internet of Things continues to grow rapidly in the coming years, the number of devices with limited resources will continue to grow as well. These so-called constrained devices typically implement specialized protocols and data formats for increased efficiency. While this reduces the load on constrained devices, it also limits the usability of such devices for their users. This paper presents...
Gateway or cloud based interaction models are widely used for automation solutions that use networked sensors and actuators. In this model, every sensor/actuator interaction goes through the gateway or via the cloud. In order to realize the true Internet of Things philosophy where everything is interconnected, direct interactions between sensors and actuators, also called bindings, are important....
The wireless communication capability of sensors and actuators made them suitable for several automation solutions which involve sensing physical properties and acting upon them. These days, gateway or cloud based sensor/actuator interaction models are widely used. In this model, every sensor/actuator interaction goes through the gateway or via the cloud. In order to realize the true Internet of Things...
As open standards for the Internet of Things gain traction, the current Intranet of Things will evolve to a truly open Internet of Things, where constrained devices are first class citizens of the public Internet. However, the large amount of control over constrained networks offered by today's vertically integrated platforms, becomes even more important in an open IoT considering its promise of direct...
The Constrained Application Protocol (CoAP) is a new Internet protocol that is currently being standardized. CoAP allows access to the drastically increasing number of smart objects and their sensing resources from virtually anywhere. It is a light-weight protocol designed to cope with the restrictions imposed by the limited resources (CPU, memory, power) of many smart objects. Depending on the application,...
The Constrained Application Protocol (CoAP) is a lightweight protocol that enables the implementation of Restful embedded web services. Observe is one of the CoAP extensions, which allow servers to send every resource state change to interested clients. In this paper we present an interesting extension to the observe option, called conditional observation, where clients specify notification criteria...
Networks of smart resource-constrained objects, such as sensors and actuators, can support a wide range of application domains. In most cases these networks were proprietary and stand-alone. More recently, many efforts have been undertaken to connect these networks to the Internet using standard protocols. Current solutions that integrate smart resource-constrained objects into the Internet are mostly...
Smart embedded objects such as sensors and actuators will become an important part of the Internet of Things. With recent technologies, it has now become possible to deploy a sensor network and interconnect it with IPv6 Internet. However, several manual configuration steps are still needed to integrate a sensor network within an existing networking environment. In this paper we describe a novel self-organization...
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