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Алгоритм динамического управления мощностью передачи и порогом определения занятости среды в плотных сетях Wi-Fi
С. 1–13.
Kiryanov A., Krotov A.
Kureev A., Пойда А. И., Глинский К. А. et al., В кн.: ИТиС 2023: Сборник трудов 47-й междисциплинарной школы-конференции ИППИ РАН "Информационные технологии и системы 2023"Т. 47.: М.: ИППИ РАН, 2023. С. 518–519.
Реконфигурируемые интеллектуальные поверхности ( англ. Reconfigurable Intelligent Surface, RIS) представляют собой технологию, улучшающую пропускную способность в беспроводных сетях за счет управления фазой и амплитудой отраженных сигналов. Обычно RIS настраиваются при помощи информации о канале, переданной от мобильных станций (англ. Mobile Station, MS) к базовым станциям (англ. Base Station, BS) что усложняет их внедрение в существующих ...
Added: January 17, 2024
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
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
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
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
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
Kutsevol P., Loginov V., Lyakhov A. et al., Automation and Remote Control 2019 No. 60 P. 2180–2194
To improve the performance of LTE cellular networks operating in the licensed frequency spectrum, a new LTE-LAA technology has been developed that allows LTE devices to transmit data in unlicensed frequency bands already used by Wi-Fi devices. The channel access method in LTE-LAA networks, as well as in Wi-Fi networks, is based on the mechanism ...
Added: October 6, 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., Ждановский В. Д., Информационные процессы 2020 Т. 20 № 3 С. 269–283
NR-U is a technology that allows fifth generation cellular networks to utilize unlicensed frequency bands, in particular, the 5 GHz band. In order to increase throughput, an NR-U base station (gNB) can operate at the same time in several frequency channels located within this band. However, a gNB can not always simultaneously transmit in one channel ...
Added: October 6, 2020
Авдотьин Е. С., Bankov D., Khorov E., В кн.: Сборник трудов 43-й междисциплинарной школы-конференции ИППИ РАН "Информационные технологии и системы 2019".: [б.и.], 2019.
Сети Wi-Fi нового поколения должны поддерживать приложения реального времени, накладывающие строгие ограничения на задержку и надежность передачи данных. В частности, этим приложениям уделено много внимания при разработке нового стандарта IEEE 802.11be, разработка которого начата в 2019 году. Для обеспечения эффективной работы приложений реального времени в сетях IEEE 802.11be разрабатываются различные подходы для приоритетного обслуживания устройств. ...
Added: January 15, 2020
Alexandrovskiy S., Вязниковцева Е. А., В кн.: Социально-экономические преобразования и проблемы. Сборник научных трудов (выпуск 8).: Издательство НИСОЦ, 2018. С. 4–18.
Маркетолог кафе анализирует посещаемость кафе, т.к. посещаемость влияет на доход. Эта статья поможет маркетологам кафе (ресторанов, кофеен и баров) оценить посещаемость без опросов и программы лояльности. В статье мы расскажем, зачем анализируют посещаемость кафе, как собирают и анализируют данные с помощью сети Wi-Fi и какие ограничения у этого метода. ...
Added: January 22, 2019
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
Khorov E., Ivanov A., Lyakhov A., Автоматика и телемеханика 2017 Т. 78 № 11 С. 48–63
Для повышения надежности доставки данных в сетях Wi-Fi станции могут резервировать для своих передач периодические интервалы времени одинаковой длительности, в течение которых они имеют право передавать, а соседние с ними станции такого права не имеют. При этом возникает задача выбора параметров резервируемых интервалов, которые гарантировали бы выполнение требований к качеству обслуживания передаваемых данных при наименьшем ...
Added: February 8, 2018
Ivanov A., Khorov E., Lyakhov A., Автоматика и телемеханика 2015 Т. 76 № 7 С. 52–68
Для передачи по mesh-сети потоковых данных, предъявляющих высокие требования к качеству обслуживания, удобно использовать описанный в стандарте IEEE 802.11s механизм MCCA детерминированного доступа к среде. При использовании этого механизма станции резервируют для своих передач определенные периодически повторяющиеся интервалы времени, тем самым получая бесконкурентный доступ к каналу связи. Однако, чтобы обеспечить успешную доставку данных в условиях ...
Added: February 8, 2018
Ivanov A., Khorov E., Lyakhov A., , in: Proceedings of 16th International Conference on Next Generation Wired/Wireless Advanced Networking.: Springer, 2016.
In Wi-Fi networks, preliminary channel reservation protects transmissions in reserved time intervals from collisions with neighboring stations. However, making changes in established reservations takes long time spent on negotiating changes with neighboring stations and dissemination of information about these changes. This complicates serving of Variable Bit Rate (VBR) flows which intensity varies with time, what ...
Added: February 8, 2018
Springer, 2016.
Proceedings of 16th International Conference on Next Generation Wired/Wireless Advanced Networking ...
Added: February 8, 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 International Symposium on Wireless Communication Systems (ISWCS) 2016 ...
Added: February 5, 2018
Ivanov A., Khorov E., Lyakhov A., , in: Proceedings of Wireless and Mobile Networking Conference (WMNC) 2016.: IEEE, 2016.
Wireless networks are replacing cables not only when providing Internet access, but also in such scenarios as multimedia transmission and high performance computing, which require extremely high data rates. Although millimetre waves open the door for multigigabit communications at the PHY layer, these rates do not guarantee an adequate Quality of Service (QoS) at the ...
Added: February 4, 2018