Lightweight Wi-Fi Frame Detection for Licensed Assisted Access LTE

Hong, Sung-Tae; Lee, Harim; Kim, Hyoil; Yang, Hyun Jong

doi:10.1109/access.2019.2921724

“…Thus, researchers [10] designed the MAC protocol for LTE-LAA for fair coexistence by optimized the transmission time for maximized the overall normalized channel rate contributed by both networks while protecting Wi-Fi. Wi-Fi energy tracking algorithm to identify the duration a dynamic ED threshold and Wi-Fi frame are proposed in previous work [11] while researchers [12] created a new analytical model for performance analysis of unlicensed LTE by fixed duty cycling of LTE in coexistence with Wi-Fi. The focus of paper [13] are maximum backoff stages, initial backoff window sizes, retry limits, transmission opportunities and sensing durations to obtain coexistence between both networks.…”

Section: Related Workmentioning

confidence: 99%

Performance Evaluation of Changing Energy Detection Threshold on Wi-Fi and LTE-LAA Coexistence Networks

Azita Laily Yusof,

Nur Haidah Mohd Hanapiah,

Norsuzila Ya’acob

2023

ARASET

0

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The demand on cellular and Wi-Fi infrastructure has increased exponentially along with the number of mobile devices in use today, thus requiring that both licensed (cellular) and unlicensed (Wi-Fi) spectrum be utilized as efficiently as possible. Licensed-Assisted Access (LAA) based unlicensed spectrum LTE service is seen as an alternative to improve the capability of 4G/5G wireless networks. This approach helps eNodeB to compete with other nodes by using the shared medium and using both licensed and unlicensed bands via carrier aggregation to provide best-effort services. Nevertheless, in order to minimise or prevent performance degradation issues, the hidden node issue over shared medium access networks is a challenge that must be tackled. The performance evaluation of an energy detector is described in this study, which takes into account the energy detection technique for spectrum sensing. The main objective of this research is to develop an energy detection sensing for LTE-LAA and Wi-Fi coexistence networks. The study will proceed with identifying the parameters used such as signal to noise ratio (SNR), energy detection threshold and energy detection probability for energy detection threshold following by derivation of mathematical equation for energy detection threshold. Next, the development of analytical framework for threshold of energy detection in Wi-Fi and LTE-LAA coexistence networks will be developed using MATLAB software. According to our findings, the detection probability will be higher if the detection threshold is dynamically adjusted based on the noise level present during the detection process than it would be if a fixed threshold value were taken into account. The results that obtained from energy detection threshold can achieve fair coexistence between LTE-LAA users and Wi-Fi users and thus, successfully reduces the interference in both coexistence networks.

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“…This approach is similar to how Wi-Fi currently operates in the 5 GHz bands-detect Wi-Fi signals at -82 dBm and non-Wi-Fi signals at -62 dBm. Such schemes have also been proposed for LTE-LAA devices operating in the 5 GHz bands [129]. In the 6 GHz bands, this would extend as follows: Wi-Fi and NR-U devices sense inter-RAT transmissions using ED, which is technology-neutral.…”

Section: B Detection Of Wi-fi and Nr-u Signals 1) Energy Detection Vmentioning

confidence: 99%

Next Generation Wi-Fi and 5G NR-U in the 6 GHz Bands: Opportunities and Challenges

Naik

¹

,

Park

²

,

Ashdown

³

et al. 2020

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The ever-increasing demand for unlicensed spectrum has prompted regulators in the US and Europe to consider opening up the 6 GHz bands for unlicensed access. These bands will open up 1.2 GHz of additional spectrum for unlicensed radio access technologies (RATs), such as Wi-Fi and 5G New Radio Unlicensed (NR-U), in the US and if permitted, 500 MHz of additional spectrum in Europe. The abundance of spectrum in these bands creates new opportunities for the design of mechanisms and features that can support the emerging bandwidth-intensive and latency-sensitive applications. However, coexistence of unlicensed devices both with the bands' incumbent users and across different unlicensed RATs present significant challenges. In this paper, we provide a comprehensive survey of the existing literature on various issues surrounding the operations of unlicensed RATs in the 6 GHz bands. In particular, we discuss how key features in next-generation Wi-Fi are being designed to leverage these additional unlicensed bands. We also shed light on the foreseeable challenges that designers of unlicensed RATs might face in the near future. Our survey encompasses key research papers, contributions submitted to standardization bodies and regulatory agencies, and documents presented at various other venues. Finally, we highlight a few key research problems that are likely to arise due to unlicensed operations in the 6 GHz bands. Tackling these research challenges effectively will be critical in ensuring that the new unlicensed bands are efficiently utilized while guaranteeing the interference-free operation of the bands' incumbent users. INDEX TERMS 6 GHz unlicensed spectrum, IEEE 802.11ax, IEEE 802.11be, 5G NR-U. I. INTRODUCTION Wireless devices operating in unlicensed bands have become an integral part of our lives today. The Federal Communications Commission (FCC) in the US first opened up the 2.4-2.4835 GHz and 5.725-5.85 GHz bands for unlicensed access in 1985 [1]. Since then, several unlicensed radio access technologies (RATs)-most notably IEEE 802.11based Wi-Fi, Bluetooth, and ZigBee-have been developed that can not only operate in these bands but also coexist with each other. The 2.4 GHz band, referred to as the Industrial, Scientific, and Medical (ISM) band, is open for unlicensed access worldwide, while unlicensed RATs such as Wi-Fi are allowed to operate in several portions of the 5 GHz bands in most regions across the world [2]. In the US, these 5 GHz bands are referred to as the Unlicensed National Information Infrastructure (U-NII) bands. Wi-Fi is arguably the most popular unlicensed RAT that provides mobile and high-speed Internet access over wireless local area networks (WLANs). Wi-Fi devices are ubiquitous in today's home and enterprise wireless networks, with an estimated 9.5 billion devices in use [3]. Furthermore, with the growing popularity of emerging applications such as wireless augmented reality (AR), virtual reality (VR), and mobile gaming, the demand for Wi-Fi-based high-throughput, highreliability and low-laten...

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“…This approach is similar to how Wi-Fi currently operates in the 5 GHz bands-detect Wi-Fi signals at -82 dBm and non-Wi-Fi signals at -62 dBm. Such schemes have also been proposed for LTE-LAA devices operating in the 5 GHz bands [122]. In the 6 GHz bands, this would extend as follows: Wi-Fi and NR-U devices sense inter-RAT transmissions using ED, which is technology-neutral.…”

Section: B Detection Of Wi-fi and Nr-u Signals 1) Energy Detection V/...mentioning

confidence: 99%

Next Generation Wi-Fi and 5G NR-U in the 6 GHz Bands: Opportunities & Challenges

Naik¹,

Park²,

Ashdown³

et al. 2020

Preprint

View full text Add to dashboard Cite

The ever-increasing demand for unlicensed spectrum has prompted regulators in the US and Europe to consider opening up the 6 GHz bands for unlicensed access. These bands will open up 1.2 GHz of additional spectrum for unlicensed radio access technologies (RATs), such as Wi-Fi and 5G New Radio Unlicensed (NR-U), in the US and if permitted, 500 MHz of additional spectrum in Europe. The abundance of spectrum in these bands creates new opportunities for the design of mechanisms and features that can support the emerging bandwidth-intensive and latency-sensitive applications. However, coexistence of unlicensed devices both with the bands' incumbent users and across different unlicensed RATs present significant challenges. In this paper, we provide a comprehensive survey of the existing literature on various issues surrounding the operations of unlicensed RATs in the 6 GHz bands. In particular, we discuss how key features in next-generation Wi-Fi are being designed to leverage these additional unlicensed bands. We also shed light on the foreseeable challenges that designers of unlicensed RATs might face in the near future. Our survey encompasses key research papers, contributions submitted to standardization bodies and regulatory agencies, and documents presented at various other venues. Finally, we highlight a few key research problems that are likely to arise due to unlicensed operations in the 6 GHz bands. Tackling these research challenges effectively will be critical in ensuring that the new unlicensed bands are efficiently utilized while guaranteeing the interferencefree operation of the bands' incumbent users.

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Lightweight Wi-Fi Frame Detection for Licensed Assisted Access LTE

Cited by 9 publications

References 12 publications

Performance Evaluation of Changing Energy Detection Threshold on Wi-Fi and LTE-LAA Coexistence Networks

Performance Evaluation of Changing Energy Detection Threshold on Wi-Fi and LTE-LAA Coexistence Networks

Next Generation Wi-Fi and 5G NR-U in the 6 GHz Bands: Opportunities and Challenges

Next Generation Wi-Fi and 5G NR-U in the 6 GHz Bands: Opportunities & Challenges

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