Abstract
When developing IoT (Internet of Things) applications, context distribution is a key feature to support effective delivery of related contextual data obtained from things to all interested entities. With the advent of the IoT era, multiple billion devices can generate huge amounts of data that might be used in IoT applications. In this paper, we present a context distribution framework named SCondi utilizing the messaging service which supports MQTT—an OASIS standard IoT messaging protocol. SCondi provides the notion ofcontext channelas a core feature to support efficient and reliable mechanism for distributing huge context information in the IoT environment. The context channel provides a pluggable filter mechanism that supports effective extraction, tailoring, authentication, and security of information.
Highlights
Context-aware computing, as a component of a ubiquitous computing [1,2,3,4], is a core technology that supports humancentric intelligent service using contextual information in real situations
The MQTT protocol has been adopted by OASIS as a standard messaging protocol for the IoT
Recall that each data should be transmitted in an original MQTT message broker while all data in a context primitives (CPs) can be passed as a single message from context channels with appropriate setting
Summary
Context-aware computing, as a component of a ubiquitous computing [1,2,3,4], is a core technology that supports humancentric intelligent service using contextual information in real situations. As one of the important components in context-aware computing, context distribution can be a key feature to support effective delivery of contextual data in the IoT environment [16]. SCondi provides the notion of context channel as a core feature to support efficient and reliable mechanism for distributing huge context information in the IoT environment. Based on the MQTT messaging service, the context channel provides a pluggable filter mechanism that supports effective extraction, Journal of Applied Mathematics tailoring, authentication, and security of information. The context channel provides higher level abstract mechanism for information delivery as a transport medium of context-aware systems in the IoT environment
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