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Abstract
Technology innovations have pushed today’s healthcare sector to an unprecedented new level. Various portable and wearable medical and fitness devices are being sold in the consumer market to provide the self-empowerment of a healthier lifestyle to society. Many vendors provide additional cloud-based services for devices they manufacture, enabling the users to visualize, store and share the gathered information through the Internet. However, most of these services are integrated with the devices in a closed “silo” manner, where the devices can only be used with the provided services. To tackle this issue, an information integration platform (IIP) has been developed to support communications between devices and Internet-based services in an event-driven fashion by adopting service-oriented architecture (SOA) principles and a publish/subscribe messaging pattern. It follows the “Internet of Things” (IoT) idea of connecting everyday objects to various networks and to enable the dissemination of the gathered information to the global information space through the Internet. A patient-centric healthcare service environment is chosen as the target scenario for the deployment of the platform, as this is a domain where IoT can have a direct positive impact on quality of life enhancement. This paper describes the developed platform, with emphasis on dependability aspects, including availability, scalability and security.
Highlights
The term “Internet of Things” (IoT) was popularized at the Massachusetts Institute of Technology (MIT) Auto-ID Center in 1999, where a group of people started to design and propagate a cross-company radio-frequency identification (RFID) infrastructure [1,2]
The implemented integration platform (IIP) prototypes, both standalone and clustered, have been deployed and tested to work as intended in laboratory environment
As described in the previous section, HTTP secure (HTTPS) is used for securing message exchanges between information providers, consumers and the IIP, by means of encryption
Summary
When everyday objects are connected to the Internet (e.g., through a smartphone gateway), an application-layer protocol is needed to communicate with Internet-based services that are interested in using the gathered information. The main disadvantage of this situation is the inability to combine information gathered from different devices produced by different vendors for better reasoning and decision making [22,23] To solve this issue, open interfaces (e.g., web service interfaces) have to be provided by device vendors, so that service developers can incorporate the information collected from the devices in their services. A common way to integrate devices and Internet-based services is to directly exchange messages between the two parties in a point-to-point manner The downside of this approach is that devices that “sense” new information should deliver it to all services that are interested in consuming it, either through a push approach from the devices or in a pull fashion from the services. Prototype services on top of it will be described to put the platform into a deployment context within the healthcare domain
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