IEEE 802.11ah: A Technology to Face the IoT Challenge

Baños-Gonzalez, Victor; Afaqui, M. Shahwaiz; López-Aguilera, Elena; García-Villegas, Eduard

doi:10.3390/s16111960

Cited by 86 publications

(88 citation statements)

References 10 publications

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“…It operates in the unlicensed sub-1GHz bands (excluding the TV white-space bands) and its bandwidth occupation is usually only 1MHz or 2MHz, while in some countries, wider bandwidths up to 16MHz are also allowed. Compared to high-speed WiFi generations, the IEEE 802.11ah aims to provide connectivity to thousands of devices with coverage of up to 1km but its maximum data rate is about 300Mbps utilizing 16MHz bandwidth [32], [61], [62]. 4) OWC: Another emerging short-range wireless technology developed to support the indoor IoT device connectivity is the OWC [9], [63].…”

Section: A Short-range Technologiesmentioning

confidence: 99%

IoT Connectivity Technologies and Applications: A Survey

et al. 2020

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The Internet of Things (IoT) is rapidly becoming an integral part of our life and also multiple industries. We expect to see the number of IoT connected devices explosively grows and will reach hundreds of billions during the next few years. To support such a massive connectivity, various wireless technologies are investigated. In this survey, we provide a broad view of the existing wireless IoT connectivity technologies and discuss several new emerging technologies and solutions that can be effectively used to enable massive connectivity for IoT. In particular, we categorize the existing wireless IoT connectivity technologies based on coverage range and review diverse types of connectivity technologies with different specifications. We also point out key technical challenges of the existing connectivity technologies for enabling massive IoT connectivity. To address the challenges, we further review and discuss some examples of promising technologies such as compressive sensing (CS) random access, non-orthogonal multiple access (NOMA), and massive multiple input multiple output (mMIMO) based random access that could be employed in future standards for supporting IoT connectivity. Finally, a classification of IoT applications is considered in terms of various service requirements. For each group of classified applications, we outline its suitable IoT connectivity options.

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Section: A Short-range Technologiesmentioning

confidence: 99%

IoT Connectivity Technologies and Applications: A Survey

et al. 2020

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“…Nowadays, most (if not all) handheld devices with networking capabilities are equipped with an IEEE 802.11 interface. However, up until now and despite Wi-Fi HaLow (IEEE 802.11ah) [29], IEEE 802.11 has not shown a significant presence in the IoT market, where other technologies are well established (e.g., ZigBee/IEEE 802.15.4e, BLE, and different proprietary technologies). Therefore, it is critical to provide a means of communication between these two worlds: Personal communication devices and IoT.…”

Section: Beyond Wake-up Functionalitymentioning

confidence: 99%

IEEE 802.11-Enabled Wake-Up Radio: Use Cases and Applications

López-Aguilera

Demirkol

García-Villegas

et al. 2019

Sensors

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IEEE 802.11 is one of the most commonly used radio access technologies, being present in almost all handheld devices with networking capabilities. However, its energy-hungry communication modes are a challenge for the increased battery lifetime of such devices and are an obstacle for its use in battery-constrained devices such as the ones defined by many Internet of Things applications. Wake-up Radio (WuR) systems have appeared as a solution for increasing the energy efficiency of communication technologies by employing a secondary low-power radio interface, which is always in the active state and switches the primary transceiver (used for main data communication) from the energy-saving to the active operation mode. The high market penetration of IEEE 802.11 technology, together with the benefits that WuR systems can bring to this widespread technology, motivates this article’s focus on IEEE 802.11-based WuR solutions. More specifically, we elaborate on the feasibility of such IEEE 802.11-based WuR solutions, and introduce the latest standardization efforts in this IEEE 802.11-based WuR domain, IEEE 802.11ba, which is a forthcoming IEEE 802.11 amendment, discussing its main features and potential use cases. As a use case consisting of green Wi-Fi application, we provide a proof-of-concept smart plug system implemented by a WuR that is activated remotely using IEEE 802.11 devices, evaluate its monetary and energy savings, and compare it with commercially available smart plug solutions. Finally, we discuss novel applications beyond the wake-up functionality that IEEE 802.11-enabled WuR devices can offer using a secondary radio, as well as applications that have not yet been considered by IEEE 802.11ba. As a result, we argue that the IEEE 802.11-based WuR solution will support a wide range of devices and deployments, for both low-rate and low-power communications, as well as high-rate transmissions.

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“…NB-IoT offers a similar range, but its use of licensed spectrum allows it to achieve higher throughput [6]. In contrast, IEEE 802.15.4g (Wi-SUN) [3] and IEEE 802.11ah (Wi-Fi HaLow) [4] focus on high throughput applications, offering up to hundreds of kilobits or even megabits per second, but at a relatively low coverage area of around 1 km. Finally, DASH7 [5] provides a middle ground in terms of both throughput and range.…”

Section: Multimodal Communications For Iotmentioning

confidence: 99%

“…On the one hand, Low-Power Wide Area (LPWA) network technologies offer a throughput of a few hundred bits per second at a range of tens of kilometers (e.g., LoRa [1] and Sigfox [2]). On the other hand, wireless sensor networks (WSNs) provide throughputs of hundreds of kilobits per second at ranges up to at most a few kilometers (e.g., IEEE 802.15.4g [3], IEEE 802.11ah [4], and DASH7 [5]) . More recently, 3GPP has introduced cellularbased IoT communication technologies (e.g., NB-IoT [6]).…”

Section: Introductionmentioning

confidence: 99%

Flexible Multimodal Sub-Gigahertz Communication for Heterogeneous Internet of Things Applications

et al. 2018

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To realize low-power and low-cost wireless communication over long distances, several wireless standards using sub-1GHz frequencies have recently been proposed, each with their own strengths and weaknesses in terms of coverage, energy consumption and throughput. However, none of them are currently flexible enough to satisfy the requirements of future dynamic and heterogeneous IoT applications. To alleviate this, a novel architecture that uses a multimodal device for flexibly employing a variety of heterogeneous sub-1GHz wireless networks is proposed. It greatly increases the network flexibility, resilience and performance. A device design is presented together with an abstraction layer that combines the different networks into a single flexible virtual network substrate. The article elaborates on the qualitative advantages of this approach. Measurementbased simulation results show advantages in terms of energy efficiency, with significant reduction in energy use compared to a single-technology solution in a representative IoT track and trace scenario. Finally, the article identifies several open research challenges that need to be resolved to fully realize this vision of flexible multimodal communication for demanding IoT applications.

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IEEE 802.11ah: A Technology to Face the IoT Challenge

Cited by 86 publications

References 10 publications

IoT Connectivity Technologies and Applications: A Survey

IoT Connectivity Technologies and Applications: A Survey

IEEE 802.11-Enabled Wake-Up Radio: Use Cases and Applications

Flexible Multimodal Sub-Gigahertz Communication for Heterogeneous Internet of Things Applications

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