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Cloud-based Management of Energy-Efficient Dense IEEE 802.11ax Networks
P. 1–5.
During the last decade, the number of devices connected to the Internet by Wi-Fi has grown significantly. A high density of both the client devices and the hot spots posed new challenges related to providing the desired quality of service in the current and emerging scenarios. To cope with the negative effects caused by network densification, modern Wi-Fi is becoming more and more centralized. To improve network efficiency, today many new Wi-Fi deployments are under control of management systems that optimize network parameters in a centralized manner. In the paper, for such a cloud management system, we develop an algorithm which aims at maximizing energy efficiency and also keeps fairness among clients. For that, we design an objective function and solve an optimization problem using the branch and bound approach. To evaluate the efficiency of the developed solution, we implement it in the NS-3 simulator and compare with existing solutions and legacy behavior.
Makhmudov T. N., Захарова В. О., Салуев Е. А. et al., Динамика сложных систем - XXI век 2023 Т. 17 № 1 С. 13–29
Постановка проблемы. Во все времена информация являлась востребованным ресурсом. Злоумышленники, захватывая данные, в некоторых случаях могли существенно влиять не только на отдельные объекты и процессы, но и на развитие социума. Современный мир нельзя представить без беспроводных способов связи. Множество электронных устройств передают данные между собой с помощью различных протоколов, и, к сожалению, эти протоколы не ...
Added: December 27, 2025
E. Khorov, A. Krasilov, M. Susloparov et al., IEEE Communications Surveys and Tutorials 2023 Vol. 25 No. 4 P. 2862–2891
Emerging wireless systems target to provide multi-Gbps data rates for each user, which can be achieved by utilizing ultra-wide channels available at mmWave, terahertz, and lightwave frequencies. In contrast to the traditional spectrum below 6 GHz, these high-frequency bands raise many issues, complicating their usage. For example, because of high signal attenuation and blockage by ...
Added: December 23, 2022
Korolev G., Kureev A., Khorov E. et al., , in: 2020 International Conference Engineering and Telecommunication (En&T).: IEEE, 2020. P. 1–5.
© 2020 IEEE.Non-orthogonal multiple access (NOMA) is a key technology for future wireless systems. Keeping the number of antennas on the devices unchanged, NOMA increases the spectral efficiency of the wireless system and raises the aggregated system throughput. For this reason, NOMA is a very attractive technology for implementation in future Wi-Fi standards that will ...
Added: October 26, 2022
Korolev G., Kureev A., Khorov E. et al., , in: 2021 International Conference Engineering and Telecommunication (En&T).: IEEE, 2022. P. 1–5.
© 2021 IEEE.Non-Orthogonal Multiple Access (NOMA) is a promising technology for future Wi-Fi, In uplink NOMA, stations with different channel conditions transmit simultaneously at the same frequency by splitting the signal by power level. Since Wi-Fi uses random access, the implementation of uplink NOMA in Wi-Fi faces many challenges. The paper presents a data transmission ...
Added: October 26, 2022
A Phase Noise Resistant Constellation Rotation Method and Its Experimental Validation for NOMA Wi-Fi
Khorov E., Kureev A., Ilya Levitsky et al., IEEE Journal on Selected Areas in Communications 2022 Vol. 40 No. 4 P. 1346–1354
Non-orthogonal multiple access (NOMA) is a well-accepted technology for future Wi-Fi systems to improve spectral efficiency. NOMA allows an access point (AP) to simultaneously serve multiple devices by splitting the transmit power between them. Using the superposition coding the AP combines signals of different frames with predefined power weights. However, as it is already known, ...
Added: October 26, 2022
Molodtsov V., Kureev A., Khorov E., IEEE Access 2021 Vol. 9 P. 153767–153774
Nowadays, the Direction of Arrival (DoA) estimation problem attracts much attention because of emerging use cases for wireless networks. DoA is beneficial for Reconfigurable IntelligentSurfaces, indoor localization, and various navigation and sensing applications, such as gesture recognition and home monitoring. The Multiple Signal Classification (MUSIC) algorithm is very promising for DoAestimation because it provides better ...
Added: December 29, 2021
Loginov V., Троегубов А. Ю., Lyakhov A. et al., IEEE Access 2021 P. 146137–146152
To improve the capacity of cellular systems without additional expenses on licensed frequency bands, the 3GPP consortium has designed cellular technologies that use the unlicensed spectrum. The important peculiarity of the usage models of these technologies, the latest of which is New Radio Unlicensed (NR-U), is the coexistence with Wi-Fi networks deployed in the same ...
Added: October 31, 2021
Tutelian S., Bankov D., Shmelkin D. et al., Sensors 2021 Vol. 21 No. 18 Article 6099
This paper studies the usage of orthogonal frequency division multiple access (OFDMA) for uplink transmissions in IEEE 802.11ax networks. OFDMA enables simultaneous multi-user transmissions in Wi-Fi, but its usage requires efficient resource allocation algorithms. These algorithms should be able to adapt to the changing channel conditions, including the frequency-selective fading. This paper presents an OFDMA ...
Added: October 12, 2021
Zhdanovskiy V., Loginov V., Lyakhov A., Journal of Communications Technology and Electronics 2021 Vol. 66 No. 6 P. 784–795
New Radio-Unlicensed (NR-U) is a technology that allows fifth generation mobile networks to utilize unlicensed frequency bands, in particular, the 5 GHz band. To increase throughput, an NR-U base station (gNB) can simultaneously operate in several frequency channels within the 5 GHz band. However, the gNB cannot always transmit data through one channel and, at ...
Added: October 11, 2021
Loginov V., Khorov E., Lyakhov A. et al., IEEE Transactions on Mobile Computing 2022 Vol. 21 No. 9 P. 3138–3149
To achieve higher throughputs in cellular networks, 3GPP proposes to use unlicensed frequency bands and develops technologies - the latest one is NR-U - allowing a cellular base station to transmit in unlicensed bands, which are already occupied by Wi-Fi networks. To enable fair channel sharing between two technologies, the base station uses a sort ...
Added: March 1, 2021
Stepanova E., Bankov D., Khorov E. et al., IEEE Access 2020 Vol. 8 P. 221061–221076
Energy efficiency is a significant challenge for modern wireless networking devices. It is crucial for the Internet of Things devices, is required for battery-supplied user devices such as smartphones, and is advisable for high-performance devices such as wireless VR headsets. This article examines the ability of modern Wi-Fi devices to achieve extremely low power consumption ...
Added: December 18, 2020
Тутельян С. А., Khorov E., , in: 2018 International Scientific and Technical Conference Modern Computer Network Technologies (MoNeTeC).: IEEE, 2018. P. 1–6.
Non-orthogonal multiple access (NOMA) is a radio access technology that allows significantly improving network performance in scenarios with high heterogeneity. While being typically studied for cellular networks, NOMA can also be used in Wi-Fi networks. This paper proposes a scheduling approach for NOMA-aware resource scheduling in Wi-Fi. This approach is implemented to design NOMA-aware downlink ...
Added: November 27, 2020
Nonorthogonal Multiple Access for Servicing the Internet of Things and Web Traffic in Wi-Fi Networks
Тутельян С. А., Khorov E., Journal of Communications Technology and Electronics 2020 Vol. 65 No. 6 P. 741–749
Nowadays, many devices require a wireless Internet connection, while the available frequency spectrum is limited. The nonorthogonal multiple access (NOMA) is a multiplexing technology that can significantly improve spectral efficiency and thus solve this problem. In this paper, the use of NOMA in Wi-Fi networks with two traffic types, Web traffic and Internet of Things ...
Added: November 27, 2020
Khorov E., Kureev A., Levitsky I. et al., , in: Proceedings of 2020 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS 2020).: IEEE, 2020. P. 1332–1333.
Added: November 26, 2020
IEEE, 2020.
Non-orthogonal multiple access (NOMA) is a radio access technology that allows significantly improving network performance in scenarios with high heterogeneity. While being typically studied for cellular networks, NOMA can also be used in Wi-Fi networks. This paper proposes a scheduling approach for NOMA-aware resource scheduling in Wi-Fi. This approach is implemented to design NOMA-aware downlink ...
Added: November 25, 2020
Khorov E., Kureev A., Levitsky I. et al., IEEE Network 2020 Vol. 34 No. 4 P. 210–217
NOMA is a promising way to increase spectral efficiency recently discussed in the IEEE 802.11 Working Group that develops WiFi standards. NOMA can be very beneficial in a WiFi network where the qualities of the channel between the access point and associated stations are significantly different. In such scenarios, NOMA allows the access point to ...
Added: November 25, 2020
Khorov E., Levitsky I. A., Akyildiz I. F., IEEE Network 2020 Vol. 34 No. 4 P. 210–217
NOMA is a promising way to increase spectral efficiency recently discussed in the IEEE 802.11 Working Group that develops WiFi standards. NOMA can be very beneficial in a WiFi network where the qualities of the channel between the access point and associated stations are significantly different. In such scenarios, NOMA allows the access point to ...
Added: November 25, 2020
Avdotin E., Bankov D., Khorov E. et al., , in: 2020 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom).: IEEE, 2020. P. 1–6.
In 2019 IEEE 802 LAN/MAN Standards Committee started the development of the next major amendment of the Wi-Fi standard: the IEEE 802.11be, also known as Wi-Fi 7. This new amendment will introduce many new functions and will improve the existing ones that will make Wi-Fi more efficient in many new scenarios. One of the scenarios ...
Added: November 3, 2020
Loginov V., Lyakhov A., Zhdanovskiy V., , in: 2019 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom).: IEEE, 2019. P. 1–5.
Due to increasing demand for throughput of cellular networks, the 3GPP consortium has developed LTE-LAA technology which allows LTE networks to use unlicensed frequency bands in 5 GHz spectrum for data transmission. Since this part of spectrum is already used by Wi-Fi networks, LTE-LAA introduces listen-before-talk (LBT) channel access mechanism for fair channel sharing. LBT ...
Added: October 30, 2020
Kutsevol P., Loginov V., Khorov E. et al., , in: 2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC).: IEEE, 2019. P. 1–6.
Growing requirements for cellular network capacity made 3GPP consortium introduce License-Assisted Access (LAA), which implies unlicensed spectrum exploitation. Since these frequencies are already occupied by other technologies, such as Wi-Fi, it is vital to assure fair and efficient sharing of the unlicensed bands by LAA and Wi-Fi devices. Hence, LAA uses Listen Before Talk, the ...
Added: October 30, 2020