Developing new connectivity architectures for local sensing and control IoT systems
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Developing new connectivity architectures for local sensing and control IoT systems Mina Malekzadeh 1 Received: 28 June 2020 / Accepted: 14 October 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract While improvement can be done in every component of the Internet of Things (IoT) as an evolving technology, this work focuses on connectivity. Currently, the main in-building connectivity technology for IoT enterprise deployments is the low rate wireless personal area network (LR-WPAN). However, despite the low power and complexity, the two main issues of the LR-WPAN are very slow data access and short coverage range. To address these issues, 802.11ax can be a promising alternative due to its new IoT-oriented features that explicitly target the resource-constraint requirements. This work proposes and implements two IoT connectivity architectures to deploy the 11ax protocol stack in the sensor motes for sensing the environment and also in the backhaul link to collect and relay the sensed data to the remote processing server. The LR-WPAN is also implemented to be utilized as the baseline and reference point for comparison purposes. Furthermore, a decision model with two integrated modules is proposed to measure and evaluate the performance of the proposed architectures on the basis of the IoT requirement factors that directly contribute to IoT efficiency. The model includes an extensive set of IoT use cases to demonstrate the capabilities of the proposed architectures and determine their contribution to performance enhancement of the IoT systems. Keywords Internet of Things . Decision model . IoT applications . IoT requirement factors
1 Introduction The Internet of Things (IoT) is an important worldwide technology with different requirements that are still evolving. IoT has a wide range of applications including industrial and home automation, medical and health care, smart cities, traffic management, ecosystem monitoring, and beyond. In these applications, a complete IoT system represents the integration of four distinct components: sensors/devices, connectivity, data processing, and user interface [1]. In essence, IoT is a network of connected things which makes the connectivity a critical component for providing seamless and distributed connection between IoT devices. Moreover, connectivity is highly important as it can control the overall IoT system performance by directly influencing the performance of the other three components. However, as a result of the ongoing growth in the number of connected devices to IoT systems, their connectivity remains a critical challenge [2].
* Mina Malekzadeh [email protected] 1
Electrical and Computer Engineering Faculty, Hakim Sabzevari University, Sabzevar 9617976487, Iran
Due to the wide number of IoT applications, requirements, and use cases, there exist many connectivity technologies that can be chosen for IoT deployments. Accordingly, the IoT connectivity technologies can be broadly divided into two solutions as either long- or local-ra
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