Book Image

IoT and Edge Computing for Architects - Second Edition

By : Perry Lea
Book Image

IoT and Edge Computing for Architects - Second Edition

By: Perry Lea

Overview of this book

Industries are embracing IoT technologies to improve operational expenses, product life, and people's well-being. An architectural guide is needed if you want to traverse the spectrum of technologies needed to build a successful IoT system, whether that's a single device or millions of IoT devices. IoT and Edge Computing for Architects, Second Edition encompasses the entire spectrum of IoT solutions, from IoT sensors to the cloud. It examines modern sensor systems, focusing on their power and functionality. It also looks at communication theory, paying close attention to near-range PAN, including the new Bluetooth® 5.0 specification and mesh networks. Then, the book explores IP-based communication in LAN and WAN, including 802.11ah, 5G LTE cellular, Sigfox, and LoRaWAN. It also explains edge computing, routing and gateways, and their role in fog computing, as well as the messaging protocols of MQTT 5.0 and CoAP. With the data now in internet form, you'll get an understanding of cloud and fog architectures, including the OpenFog standards. The book wraps up the analytics portion with the application of statistical analysis, complex event processing, and deep learning models. The book then concludes by providing a holistic view of IoT security, cryptography, and shell security in addition to software-defined perimeters and blockchains.
Table of Contents (17 chapters)
15
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16
Index

IEEE 802.11 protocols and WLAN

One of the first adopters of the ISM bands that the FCC freed for unlicensed use was the IEEE 802.11 technology. The IEEE 802.11 is a suite of protocols with a rich history and different use cases. 802.11 is the specification defining the Media Access Control (MAC) and physical layer (PHY) of a networking stack. The definition and specifications are governed by the IEEE LAN/MAN Standards Committee. Wi-Fi is the definition of WLAN based on the IEEE802.11 standards but maintained and governed by the nonprofit Wi-Fi Alliance.

802.11 owes its creation to NCR in 1991, which first developed the wireless protocol as a means of networking cash registers. It wasn't until 1999 when the Wi-Fi Alliance was formed that the technology became ubiquitous and pervasive in the burgeoning PC and notebook market. The original protocol is vastly different than modern 802.11 b/g/n/ac protocols. It only supported a 2 Mbps data rate with forward error correction...