Son N. Han

The Cluster Between Internet of Things and Social Networks: Review and Research Challenges

The cluster between Internet of Things (IoT) and social networks (SNs) enables the connection of people to the ubiquitous computing universe. In this framework, the information coming from the environment is provided by the IoT, and the SN brings the glue to allow human-to-device interactions. This paper explores the novel paradigm for ubiquitous computing beyond IoT, denoted by Social Internet of Things (SIoT). Although there have been early-stage studies in social-driven IoT, they merely use one or some properties of SIoT to improve a number of specific performance variables. Therefore, this paper first addresses a complete view on SIoT and key perspectives to envision the real ubiquitous computing. Thereafter, a literature review is presented along with the evolutionary history of IoT research from Intranet of Things to SIoT. Finally, this paper proposes a generic SIoT architecture and presents a discussion about enabling technologies, research challenges, and open issues.

Semantic Context-Aware Service Composition for Building Automation System

Service-oriented architecture (SOA) is realized by independent, standardized, and self-describing units known as services. This architecture has been widely used and verified for automatic, dynamic, and self-configuring distributed systems such as in building automation. This paper presents a building automation system adopting SOA paradigm with devices implemented by device profile for web service (DPWS) in which context information is collected, processed, and sent to a composition engine to coordinate appropriate devices/services based on the context, composition plan, and predefined policy rules. A six-phased composition process is proposed to carry out the task. In addition, two other components are designed to support the composition process: building ontology as a schema for representing semantic data and composition plan description language to describe context-based composite services in form of composition plans. A prototype consisting of a DPWSim simulator and SamBAS is developed to illustrate and test the proposed idea. Comparison analysis and experimental results imply the feasibility and scalability of the system.

DPWSim: A simulation toolkit for IoT applications using devices profile for web services

The OASIS standard Devices Profile for Web Services (DPWS) enables the use of Web services on smart and resource-constrained devices, which are the cornerstones of the Internet of Things (IoT). DPWS sees a perspective of being able to build service-oriented and event-driven IoT applications on top of these devices with secure Web service capabilities and a seamless integration into existing World Wide Web infrastructure. We introduce DPWSim, a simulation toolkit to support the development of such applications. DPWSim allows developers to prototype, develop, and test IoT applications using the DPWS technology without the presence of physical devices. It also can be used for the collaboration between manufacturers, developers, and designers during the new product development process.

Service composition for IP smart object using realtime Web protocols

The Internet of Things (IoT) refers to a world-wide network of interconnected physical things using standardized communication protocols. Recent advancements in IoT protocol stack unveil a possibility for the future IoT based on the stable and scalable Internet Protocol (IP). Then, how can data and events introduced by IP networked things be efficiently exchanged and aggregated in various application domains? The problem, known as service composition, is essential to support the rapid creation of new ubiquitous applications. This article explains the practicability of the future full-IP IoT with realtime Web protocols and discusses the research challenges of service composition. Identify future full-IP IoT with IP smart object using realtime Web protocolState the problem of service composition problem in the future IoTReview the state of the art of service composition in the future IoTProvide research challenges of service composition in the future IoT

Semantic service provisioning for smart objects: Integrating IoT applications into the web

Abstract Internet of Things (IoT) applications residing on the Web are the next logical development of the recent effort from academia and industry to design and standardize new communication protocols for smart objects. This paper proposes the service provisioning architecture for smart objects with semantic annotation to enables the integration of IoT applications into the Web. We aim to bring smart object services to the Web and make them accessible by plenty of existing Web APIs in consideration of its constraints such as limited resources (ROM, RAM, and CPU), low-power microcontrollers, and low-bitrate communication links.

Extending the Devices Profile for Web Services Standard Using a REST Proxy

The Devices Profile for Web Services (DPWS) standard enables the use of Web services for certain Internet of Things (IoT) applications. DPWS is appropriate for implementing services on resource-constrained devices. However, little investigation has gone into how such services perform in IoT scenarios as regards features such as dynamic discovery and publish-subscribe eventing. Moreover, DPWS introduces considerable overhead due to its use of SOAP envelopes in exchange messages. To tackle these problems, the authors extend the DPWS standard using a REST proxy, creating a RESTful Web API that paves the way for developers to invest more in this technology.

DPWSim: A Devices Profile for Web Services (DPWS) Simulator

The devices profile for Web services (DPWS) standard enables the use of Web services for resource-constrained devices, main components of the Internet of Things (IoT). DPWS can power the next generation of IoT applications by connecting millions of networked devices and services on the Web. This paper presents a simulator, called DPWSim, to support the use of this technology. DPWSim featuring secure messaging, dynamic discovery, service description, service invocation, and publish-subscribe eventing can be used to prototype, develop, and test products in terms of DPWS communication protocols. It can also support the collaboration among manufacturers, developers, and designers during the new product development process.

A Framework for Social Device Networking

The concept of connectedness, as inspired by Social Networking Service, is a key factor which participates in changing the way people interact with each other over the Internet. On the other hand, connected world as envisioned by the Internet of Things aims to expand the idea of connectivity to include everything in the physical world to a big network called the Internet. In order to realize the integration between the world of connected people and the world of connected devices, intelligence including semantics and recommendation acts as a key factor to expand the basic communication functionalities to include search, discovery, mashup of new services and filtering. We propose a framework to facilitate the next generation of communication between people and devices, and a preliminary prototype including three modules DPWSim, ThingsGate, ThingsChat along with a use case discussion.

Context-aware service composition framework in web-enabled building automation system

The Web of Things paradigm brings the available and strongly-supported Web standards closer to the development of applications for heterogeneous environment of smart things regardless of their native operating systems, linking physical and cyber world. Considering the Web of Things architecture, we propose a framework that allows users and communities to create composite services sensitive to context in the domain of building automation. This is meaningful as the capability of automatic responses to context changes is critical to the successful functioning of a building automation system. A case study of VisitorReception composite service illustrates the validation of the framework.

Towards Automated Service Composition Using Policy Ontology in Building Automation System

Automated service composition is critical for successfully implementing Building Automation Systems which facilitate Web services over physical devices. In this paper, we propose a new service composition model using a policy ontology represented by Semantic Web languages. Our proposed model can be a powerful tool to automatically compose services with associating meaningful policies.