Connected Environments for the Internet of Things by Zaigham Mahmood

Author:Zaigham Mahmood
Language: eng
Format: epub
ISBN: 9783319701028
Publisher: Springer International Publishing

7.3.2 Problem Description

In the smart office environment, devices use different communication protocols. In our case study, users control air conditioner, use sensor to get measurements and use security camera through their smart phones. However smart phones do not contain a ZigBee unit. The security camera is only connected to the local network and it can be reached through wired connection. Also, the air conditioner and the coffee machine use the sensor in their automatic mode. Coffee machine also does not have a ZigBee unit, and the air conditioner cannot communicate with the sensor directly. Coffee machine can only be reached through Bluetooth. Smart phones can use Bluetooth to control the coffee machine if they are in the same office. However, due to the short range of Bluetooth, it cannot be used from other offices in the same building.

Using a generic protocol among all devices or producing devices capable of supporting all possible protocols at once is not realistic and feasible when different device characteristics, vendors, power and computation constraints of the devices and their purpose of usage are considered. Moreover, an IoT configuration is not static but dynamic, that is, new IoT devices may be added and removed from the configuration at different times.

To address the required various interactions, the components should adapt their communication channels with interacting parties which in turn bring the duty of multi interaction management to the component. This increases complexity and decreases reusability of both components and connectors as the interaction logic is hidden inside the communicating components. Following the separation of concerns principle, where components carry out their core functionality and connectors satisfy interaction needs, a highly reusable and dynamic infrastructure is needed.

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