Internet of Things (IoT), is a new expansion of Information Technology and promising concept that acquiring popularity in every application and field. The Internet of Things transforms the real physical objects and their status into intelligent virtual objects. The converted virtual form or sensed information can be acquired, checked, modified and connected for controlling the object or related things. In IoT, anything, anywhere, anytime can be communicated. In this perspective, this review paper addresses IoT concepts through review of scholarly research papers, professional discussions with experts and online databases. Current IoT technologies, protocols and models are studied, discussed and presented.
Table of Contents
1. INTRODUCTION
1.1 Definition of IOT:
1.2 IoT reference model
1.2.1 Physical Devices and Controllers
1.2.2 Connectivity
1.2.3 Computing
1.2.4 Data Accumulation
1.2.5 Data Abstraction
1.2.6 Application (Reporting, Analytics, Control)
1.2.7 Collaboration and Processes (Involving people and business processes)
2. Wireless IoT Communication Protocols
2.1 i. ZigBee
2.2 ii. RF Links
2.3 iii. Bluetooth
2.4 iv. 6LoWPAN
2.5 v. Z-Wave
2.6 vi. Wi-Fi Wireless fidelity
3. MQTT - Message - Queue Telemetry - Transport
4. CoAP - Constrained Application Protocol
5. XMPP – Extensible Messaging and Presence Protocol
Research Objectives and Themes
The primary objective of this paper is to explore the evolving landscape of the Internet of Things (IoT) by reviewing current architectures, reference models, and communication protocols. It aims to bridge the gap between physical objects and virtual data representation, examining how diverse technologies facilitate global connectivity and machine-to-machine communication.
- Architectural reference models for IoT systems (3 to 7 layers).
- Wireless communication protocols including ZigBee, Bluetooth, and Wi-Fi.
- Edge computing and data abstraction strategies.
- Messaging protocols such as MQTT, CoAP, and XMPP for low-power environments.
Excerpt from the Book
Definition of IOT:
IoT can be defined as "Internet of Things envisions a self-configuring, adaptive, complex network that connected things to the Internet through the use of standard message protocols. These connected things have a physical or virtual presentation in today’s world of digital, sensing capability, a programmability feature, and can be uniquely identified. The presentation contains all the information of the things. The data about things can be captured and communicated. The service through the use of interfaces and is made available anywhere, anytime, and for anything." [2]
Summary of Chapters
INTRODUCTION: Provides an overview of the IoT concept, defining it as a transformative technology that connects physical objects to the internet, and outlines a seven-layer reference model.
Wireless IoT Communication Protocols: Details specific wireless standards such as ZigBee, RFID, Bluetooth, 6LoWPAN, Z-Wave, and Wi-Fi, explaining their distinct roles in enabling IoT connectivity.
MQTT - Message - Queue Telemetry - Transport: Describes the lightweight publish-subscribe messaging protocol optimized for embedded systems and low-bandwidth networks.
CoAP - Constrained Application Protocol: Discusses a machine-to-machine web transfer protocol designed for devices with limited memory and processing power.
XMPP – Extensible Messaging and Presence Protocol: Covers an efficient protocol for real-time messaging, highlighting its flexibility in supporting both publish/subscribe and request/response architectures.
Keywords
Internet of Things, IoT, Reference Model, Wireless Protocols, ZigBee, Bluetooth, 6LoWPAN, Z-Wave, Wi-Fi, RFID, MQTT, CoAP, XMPP, Edge Computing, Connectivity
Frequently Asked Questions
What is the fundamental focus of this paper?
The paper focuses on the architecture and communication technologies that underpin the Internet of Things, providing a review of current models and protocols.
What are the primary themes discussed?
The key themes include the conceptual definition of IoT, the structure of reference models, wireless communication standards, and messaging protocols for M2M communication.
What is the core objective of the research?
The objective is to present a synthesized review of scholarly papers and technical discussions regarding current IoT technologies and their implementation.
Which scientific methods were employed?
The author utilized a literature review approach, analyzing scholarly research, professional expert discussions, and publicly available online databases.
What topics are covered in the main body of the work?
The main body covers the seven-layer IoT reference model, details on specific wireless protocols like ZigBee and Wi-Fi, and an analysis of messaging standards like MQTT and CoAP.
Which keywords best describe this study?
Key terms include IoT, Reference Model, Wireless Protocols, MQTT, CoAP, XMPP, and Edge Computing.
How does the IoT reference model categorize the different layers?
The model is broadly categorized into seven layers, ranging from physical devices and controllers at the bottom to collaboration and processes at the top.
Why are protocols like CoAP significant for IoT devices?
CoAP is significant because it is designed for small devices with limited resources, enabling efficient Machine-to-Machine communication using asynchronous models.
What role does the "Data Abstraction" layer play?
This layer converts data from diverse sources into a uniform format, ensuring compatibility for higher-level applications while providing authentication for security.
- Citar trabajo
- Ajit Singh (Autor), 2018, Internet of Things Reference Model and Wireless IoT Communication Protocols, Múnich, GRIN Verlag, https://www.grin.com/document/489811
