The Internet of Things (IoT) refers to extending the Internet to devices such as home appliances, consumer electronics, and sensor networks. As multiple heterogeneous devices attempt to create area networks, one of the major challenges is the interoperability and com-posability of their services. The traditional way to address interoperability is to define standards; however, there are many standards and specifications that are incompatible with each other. In this paper we propose an application layer solution for interoperability. The key idea is to utilize device semantics provided by existing specifications and dynamically wrap them in our middleware into semantic services. Next, with the help of Semantic Web technologies, users can create and then execute complex tasks involving multiple heterogeneous devices. We demonstrate how our framework automates interoperability without any modifications to existing standards, devices, or technologies, while providing to the user an intuitive semantic interface with services that can be executed by combining devices in the network.

Semantic middleware for the Internet of Things

Mobile technology-based interventions for adult users of alcohol: A systematic review of the literature

Semantic-based discovery to support mobile context-aware service access

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Understanding Information Systems Continuance for Information-Oriented Mobile Applications

Advances in wireless networks, sensors, and portable devices offer unique chances to deliver novel anytime anywhere medical services and information, thus enabling a wide range of healthcare applications, from mobile telemedicine to remote patient monitoring, from location-based medical services to emergency response. Mobile e-health has great potential to extend enterprise hospital services beyond traditional boundaries, but faces many organizational and technological challenges. In pervasive healthcare environments, characterized by user/service mobility, device heterogeneity, and wide deployment scale, a crucial issue is to discover available healthcare services taking into account the dynamic operational and environmental context of patient-healthcare operator interactions. In particular, novel discovery solutions should support interoperability in healthcare service descriptions and ensure security during the discovery process by making services discoverable by authorized users only. This article proposes a semantic-based secure discovery framework for mobile healthcare enterprise networks that exploits semantic metadata (profiles and policies) to allow flexible and secure service search/retrieval. As a key feature, our approach integrates access control functionalities within the discovery framework to provide users with filtered views on available services based on service access requirements and user security credentials.

Enabling secure service discovery in mobile healthcare enterprise networks

The acceptance of next-generation mobile communication systems depends to a large extent on the services and applications that can be offered to customers. Tailoring the services to actual user needs is considered to be crucial for the success of future wireless technology. The individual user, "I", has to be put in the center of service provisioning. In this article, we report the work developed by the Working Group 2 of the Wireless World Research Forum on a service infrastructure framework for the future wireless world. Major service capabilities such as personalization, ambient awareness, and adaptability are described along with a reference model focusing in I-centric communication.

K. Raatikainen

Papers

I-centric communications: personalization, ambient awareness, and adaptability for future mobile services