Cyber-Assurance for the Internet of Things by Tyson T. Brooks

Author:Tyson T. Brooks
Language: eng
Format: epub
ISBN: 9781119193876
Publisher: Wiley
Published: 2016-12-14T00:00:00+00:00

Figure 7.2 An IoT-enabled home automation system. Reproduced with permission of IEEE.

The controller and the field devices (i.e., smart devices) share raw operational data, raw informational data, instructions, or status information. These instructions can be manipulator information or operational parameters or settings, such as desired temperature, efficiency modes, or control and feedback gain parameters. These devices can be characterized by communicating though IP protocols for constrained devices.4 They generally utilize resilient physical layer protocols5 at lower layers and mesh networking at higher layers. The controller is connected to the user's local area network which is in turn connected to the Internet. It is possible that the local area network and the field area network are physically unified if all devices communicate through similar physical layer protocols; however, the real-time nature of some automation systems will require specialized protocols that are resilient to noise and network congestion (Gomez & Paradells 2010).

As illustrated in Figure 7.3, depending on the application, the system provider is now an integral part of the architecture and can have the following roles:

Provides ubiquitousness to the user by enabling him to have complete control of the system from anywhere, given that the user has access to the Internet;

Updates different control system parameters depending on user request or on the request of automated supervisory functions programmed by the user or set by the service provider through analyzing historical data;

Sends alarms to the user or “third-party” service providers;

Logs operational data that is used for advanced functions, such as learning user's energy utilization for its integration with the smart grid;

Provides enhanced functions to the user;

Assists in firmware and software updates, provides applications, and many others.

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