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Joint Power Control and Time Division to Improve Spectral Efficiency in Dense Wi-Fi Networks
P. 1-5.
Ubiquitous densification of wireless networks has brought up the issue of inter- and intra-cell interference. Interference significantly degrades network throughput and leads to unfair channel resource usage, especially in Wi-Fi networks, where even a low interfering signal from a hidden station may cause collisions or block channel access as it is based on carrier sensing. In the paper, we propose a joint power control and channel time scheduling algorithm for such networks, which significantly increases overall network throughput while maintaining fairness. The algorithm is based on branch-and-bound global optimization technique and guarantees that the solution is optimal with user-defined accuracy.
Khorov E., Kiryanov A., Lyakhov A. et al., IEEE Communications Surveys and Tutorials 2019 Vol. 21 No. 1 P. 197-216
While celebrating the 21st year since the very first IEEE 802.11 “legacy” 2 Mbit/s wireless Local Area Network standard, the latest Wi-Fi newborn is today reaching the finish line, topping the remarkable speed of 10 Gbit/s. IEEE 802.11ax was launched in May 2014 with the goal of enhancing throughputper-area in high-density scenarios. The first 802.11ax ...
Added: October 9, 2018
Krotov A., Kiryanov A., Khorov E., IEEE Access 2020 P. 168898-168909
To improve the performance of Wi-Fi networks in dense deployments, the recent IEEE 802.11ax standard introduces a palette of features improving spatial reuse. A key property of these features is dynamic changes in transmit power and the interference from the neighboring devices. The paper explains the basic operation of spatial reuse features and shows that ...
Added: September 22, 2020
Avdotin E., Bankov D., Khorov E. et al., , in : 2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). : IEEE, 2019.
Next generation Wi-Fi networks are expected to support real-time applications that impose strict requirements on the packet transmission delay and packet loss ratio. Such applications form an essential target for the future Wi-Fi standard, namely IEEE 802.11be, the development process of which started in 2019. A promising way to provide efficient real-time communications in 802.11be ...
Added: January 13, 2020
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
Bankov D., Khorov E., Lyakhov A. et al., International Journal of Distributed Sensor Networks 2019 Vol. 15 No. 5 P. 1-11
Being of high importance, real-time applications, such as online gaming, real-time video streaming, virtual reality, and remote-control drone and robots, introduce many challenges to the developers of wireless networks. Such applications pose strict requirements on the delay and packet loss ratio, and it is hardly possible to satisfy them in Wi-Fi networks that use random ...
Added: September 26, 2019
Avdotin E., Bankov D., Khorov E. et al., , in : 2019 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom). : IEEE, 2019. P. 1-3.
Being of high importance, real-time applications, such as online gaming, real-time video streaming, virtual reality, and remote-control drone and robots, introduce many challenges to the developers of wireless networks. Such applications pose strict requirements on the delay and packet loss ratio, and it is hardly possible to satisfy them in Wi-Fi networks that use random ...
Added: September 26, 2019
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
Loginov V., Lyakhov A., Khorov E., Journal of Communications Technology and Electronics 2018 Vol. 63 No. 12 P. 1530-1537
An increase in the network capacity is a requirement for modern LTE cellular networks. A part of the RF spectrum that is available for transmission is among the most important limiting factors. Such a problem can be solved in the LTE networks using unlicensed bands that are employed in alternative (e.g., Wi-Fi) technologies with the ...
Added: October 6, 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
Loginov V., Троегубов А. Ю., В кн. : Сборник трудов конференции "Информационные технологии и системы (ИТиС) 2021". : М. : Институт проблем передачи информации им. А.А. Харкевича РАН, 2021.
Ежегодно возрастающие требования к сотовым сетям способствовали появлению и развитию ряда технологий сотовой связи, которые могут использовать ресурсы нелицензируемого спектра. Ключевой особенностью работы подобных технологий, наиболее актуальной из которых является NR-U, считается сосуществование с сетями Wi-Fi, работающими в той же частотной полосе. Хотя и Wi-Fi, и NR-U используют похожие методы доступа к каналу, основанные на CSMA/CA, ...
Added: October 31, 2021
Ivanov A., Khorov E., Lyakhov A., , in : Proceedings of Global Communication Conference (GlobeCom) 2015, ETFWLAN Workshop. : IEEE, 2015.
To improve Wi-Fi performance in scenarios with high collision probability, recent amendments to the Wi- Fi standard introduce a number of channel access methods based on preliminary channel time reservations. A common feature of these methods is that channel time is reserved in a periodic manner. Unfortunately, having defined a number of channel reservation methods, ...
Added: February 2, 2018
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
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
Kutsevol P., Loginov V., Khorov E. et al., , in : 2019 IFIP Networking Conference (IFIP Networking). : IEEE, 2019. P. 1-9.
The volume of traffic transmitted over cellular networks is growing significantly every year. To improve LTE network throughput, 3GPP has proposed License-Assisted Access (LTE-LAA), which allows utilizing the unlicensed 5GHz spectrum already used by Wi-Fi and other technologies. To enable fair resource sharing, LTE-LAA adopts CSMA/CA-based channel access with binary exponential backoff similar to Wi-Fi. ...
Added: October 30, 2020
Ivanov A., Khorov E., Lyakhov A., Automation and Remote Control 2017 Vol. 78 No. 11 P. 1978-1990
To improve the reliability of data delivery, in Wi-Fi networks stations can reserve for their transmissions periodic time intervals of the same duration in which they are allowed to transmit, while adjacent stations do not have that right. Here there arises the problem of choosing the parameters of reserved intervals that would ensure quality of ...
Added: February 8, 2018
IEEE, 2014
The Wireless Days Conference is a major international conference which aims to bring together researchers, technologists and visionaries from academia, research centers and industry, engineers and students to exchange, discuss, and share their experiences, ideas and research results about theoretical and practical aspects of wireless Networking. Wireless Days 2014 will include presentations of both theoretical ...
Added: February 1, 2018
Bankov D., Khorov E., Lyakhov A. et al., , in : 2018 IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC). : IEEE, 2018.
Ultra Reliable Low Latency Communications (URLLC) is an important challenge for the next generation wireless networks, which poses very strict requirements to the delay and packet loss ratio. Satisfaction is hardly possible without introducing additional functionality to the existing communication technologies. In the paper, we propose and study an approach to enable URLLC in Wi-Fi ...
Added: October 15, 2018
Ivanov A., Khorov E., Lyakhov A., В кн. : Proceedings of International Symposium on Wireless Communication Systems (ISWCS) 2016. : IEEE, 2016.
Many applications like IPTV, airplane entertainment systems, multimedia education systems, gaming, robotics and others require reliable multicast. In Wi-Fi networks, this challenge has been mainly addressed by the IEEE 802.11aa amendment, which improves audio and video delivery and introduces a number of multicast methods. The amendment states that reliability of the methods can be increased ...
Added: February 5, 2018
IEEE, 2016
Proceedings of Wireless and Mobile Networking Conference (WMNC) 2016 ...
Added: February 4, 2018
IEEE, 2015
Proceedings of IEEE International Symposium on Wireless Communication Systems (ISWCS) 2015 ...
Added: February 2, 2018
Троегубов А. Ю., Loginov V., В кн. : Труды 64-й Всероссийской научной конференции МФТИ. : Долгопрудный : МФТИ, 2021. С. 1-1.
С каждым годом растет объем пользовательского трафика, передаваемого в сотовых сетях. Для удовлетворения растущих требований к пропускной способности в течение последних лет было разработано и стандартизовано несколько технологий сотовой связи, использующих для своей работы каналы в нелицензируемой полосе 5 ГГц дополнительно к лицензируемым частотам. Наиболее актуальной из них является технология 5G NR-U. Для уменьшения негативного ...
Added: October 31, 2021
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
Ivanov A., Khorov E., Кузнецов Е. С., В кн. : Сборник трудов конференции "Информационные Технологии и Системы (ИТиС) 2015". : ИППИ РАН, 2015.
Механизм детерминированного доступа MCCA, описанный в стандарте IEEE 802.11 сетей Wi-Fi, позволяет станциям резервировать интервалы времени для передачи данных. Защита от коллизий и эффекта скрытых станций, обеспечиваемая детерминированным доступом, позволяет использовать MCCA для передачи данных с заданными требованиями к качеству обслуживания. В случае, когда такие данные требуется передать сразу нескольким получателям, MCCA для экономии канальных ...
Added: January 29, 2018
IEEE, 2015
Added: January 26, 2018