Development of Virtual Resource Based IoT Proxy for Bridging Heterogeneous Web Services in IoT Networks

Abstract

The Internet of Things is comprised of heterogeneous devices, applications, and platforms using multiple communication technologies to connect the Internet for providing seamless services ubiquitously. With the requirement of developing Internet of Things products, many protocols, program libraries, frameworks, and standard specifications have been proposed. Therefore, providing a consistent interface to access services from those environments is difficult. Moreover, bridging the existing web services to sensor and actuator networks is also important for providing Internet of Things services in various industry domains. In this paper, an Internet of Things proxy is proposed that is based on virtual resources to bridge heterogeneous web services from the Internet to the Internet of Things network. The proxy enables clients to have transparent access to Internet of Things devices and web services in the network. The proxy is comprised of server and client to forward messages for different communication environments using the virtual resources which include the server for the message sender and the client for the message receiver. We design the proxy for the Open Connectivity Foundation network where the virtual resources are discovered by the clients as Open Connectivity Foundation resources. The virtual resources represent the resources which expose services in the Internet by web service providers. Although the services are provided by web service providers from the Internet, the client can access services using the consistent communication protocol in the Open Connectivity Foundation network. For discovering the resources to access services, the client also uses the consistent discovery interface to discover the Open Connectivity Foundation devices and virtual resources.

Breaking Down the Compatibility Problem in Smart Homes: A Dynamically Updatable Gateway Platform

“…For example, an actuator can access sensing data of a sensor by simply querying the database without directly communicating with that sensor. Apparently, several complicated modules, such as protocol translator and message broker, are needed to achieve a seamless interoperability in the IoT system [42]. In addition, stateful applications, such as asynchronous event notification, publish/subscribe messaging, and cloud-based data analysis/storage services, can be developed by utilizing the information of virtual devices in the NoSQL database.…”

An Iot Platform for Indoor Air Quality Monitoring Using the Web of Things

“…Modern solutions bridge heterogeneous Web services from the Internet into the IoT network by creating proxies. Thus, clients access transparently to IoT devices and Web services in the network, as in Jin and Kim [13].…”

Indoor Air Quality Monitoring Sensor for the Web of Things

“…More recently, [4] report the changes on the Internet because of the IoT and state that the IoT should be considered as part of the overall Internet of the future. Modern solutions create proxies to bridge heterogeneous Web services from the Internet into IoT networks, as in the solution proposed by [5].…”