Modeling a session of subject-system interaction in a wireless communication infrastructure with a mixed resource

Kovtun, Viacheslav; Izonin, Ivan; Greguš, Michal

doi:10.1371/journal.pone.0271536

Cited by 4 publications

(6 citation statements)

References 29 publications

(27 reference statements)

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“…Однією з головних проблем безпровідного зв'язку є розподіл ресурсів спільного фізичного середовища між активними учасниками. В мобільних мережах 5G актуальним напрямком досліджень на сьогодні є аналіз і оптимізація розподілу ресурсів для передачі різних типів трафіку [1,2], в локальних -аналіз і вдосконалення методів доступу до фізичного середовища [3]. Існує кілька категорій доступу до спільного фізичного середовища, серед яких найчастіше використовується метод на основі конкуренції.…”

Section: постановка проблемиunclassified

Analysis of the Csma/Ca Scheme for Wireless Local Area Networks

OBELOVSKA,

PELEKH,

PELEKH

et al. 2022

Herald KhmNU.TS

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The current stage of telecommunication technologies development is characterized by the rapid growth use of wireless technologies in access networks and the growth requirements for its quality. The bottleneck that significantly reduces the bandwidth of each subscriber connection is that the total bandwidth of the wireless local network is shared among its active members by the shared technology used. The access management sub-layer to the shared physical environment is responsible for this in the network architecture. The main method used at this sub-layer is the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) scheme. This work is devoted to the analysis of CSMA/CA scheme and the development of an analytical model for its further study and use for the improvement of wireless local networks. The input data is a transition state diagram of a local area wireless network station in data transmission mode. According to the CSMA/CA scheme, stations cannot change their state after starting frame transmission until a confirmation frame of successful reception arrives from the addressee or until the time to wait for it expires. Considering this, it is proposed to use a simplified transition state diagram for the analysis. The operation of the station by the simplified transition state diagram is described using a system of differential equations. As a result of the solution of this system, expressions representing the probability of the station being in each of its states as a function of the intensities of the station’s transitions from each state to another are derived. The values of these intensities depend on both the outgoing traffic of the station and the traffic in the network. The resulting expressions can be used in further work on the analysis of the CSMA/CA scheme, as they make it possible to estimate the operation of the station at different ratios of the station’s output traffic and external traffic generated by other stations of the network. This can be used to develop an enhanced algorithm station operation of wireless local area networks by adapting the parameters of the CSMA/CA scheme to specific current loads of both the station and the network.

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Section: постановка проблемиunclassified

Analysis of the Csma/Ca Scheme for Wireless Local Area Networks

OBELOVSKA,

PELEKH,

PELEKH

et al. 2022

Herald KhmNU.TS

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“…As peripheral nodes in Edge Computing, the corresponding servers [6][7][8][9] are used, which are placed directly where information is produced. Usually, these are production or technical premises in which it is impossible to mount a server rack and ensure cleanliness.…”

Section: Introduction 1research Backgroundmentioning

confidence: 99%

The Markov Concept of the Energy Efficiency Assessment of the Edge Computing Infrastructure Peripheral Server Functioning over Time

Kovtun,

Altameem,

Al-Maitah

et al. 2023

Electronics

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The article is devoted to the research of the peripheral server energy consumption managing process defined based on the threshold policy by manipulating the values of the characteristic parameters of the arithmetic-logical complex of the latter. The research object is formalized by a Markov queue model with a single-threshold control scheme for the intensity of accepted requests service. A characteristic feature of the life cycle of a peripheral server is the non-stationary mode of operation in terms of energy consumption, due to the need to periodically poll the controlled sensor network and process the received data in real-time. To take into account this circumstance, the intensities of transitions in the heterogeneous birth-and-death Markov process of the created model are interpreted as non-random periodic functions of time. The resulting mathematical apparatus is summarized in the metric that allows us to estimate the target peripheral server’s energy consumption both at a specific moment and for a censored time interval (this distinguishes the obtained result from existing analogs).

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“…The driver of success in the mentioned example is the use of equipment that supports the Wi-Fi 6 (IEEE 802.11ax) standard adopted in 2019 [1][2][3]. In 2020, the Wi-Fi Alliance decided to enhance the effect of Wi-Fi 6 and introduced an extension of the current standard to Wi-Fi 6E [3,4].…”

Section: Introductionmentioning

confidence: 99%

Information Technology for Maximizing Energy Consumption for Useful Information Traffic in a Dense Wi-Fi 6/6E Ecosystem

Kovtun,

Altameem,

Al-Maitah

et al. 2023

Electronics

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In Wi-Fi standards, a relatively narrow range of frequency spectrums is declared as working, on the operation of which additional restrictions are imposed in different countries. When creating dense wireless network ecosystems focused on massive information traffic, this circumstance causes significant interference even in the case of using Wi-Fi 6/6E-compatible equipment. An effective solution to this problem is the implementation of a centralized management mechanism for the relevant parameters of the target network ecosystem. The growing attention to ecology and rational use of electricity makes the problem of maximizing energy consumption for useful information traffic in a dense Wi-Fi 6/6E ecosystem an urgent task. Only the addressed information traffic between the transmitter and the target subscriber, which are subjects of the OFDMA technology and the MU-MIMO multiple access system (with an emphasis on the latter), is considered useful. To solve the problem, the authors formalized the Wi-Fi 6/6E ecosystem’s energy consumption model, which takes into account the specifics of OFDMA and MU-MIMO, the influence of the communication channel characteristics on the speed of target information transfer, and detailed energy consumption for maintaining the network infrastructure in a functional state. Based on the created model, the research problem is represented by the difference between two monotonic functions, relative to which the problem of optimization with restrictions is set. The process of solving this problem is presented in the form of information technology with a branch-and-bound hierarchy and a nested unconditional optimization problem. The results of simulated modelling in the MATLAB-NS3 environment showed a significant advantage of the authors’ approach. The energy power consumption by the Wi-Fi 6/6E ecosystem, the parameters of which were adjusted with the help of the authors’ information technology, decreased by more than four times.

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Modeling a session of subject-system interaction in a wireless communication infrastructure with a mixed resource

Cited by 4 publications

References 29 publications

Analysis of the Csma/Ca Scheme for Wireless Local Area Networks

Analysis of the Csma/Ca Scheme for Wireless Local Area Networks

The Markov Concept of the Energy Efficiency Assessment of the Edge Computing Infrastructure Peripheral Server Functioning over Time

Information Technology for Maximizing Energy Consumption for Useful Information Traffic in a Dense Wi-Fi 6/6E Ecosystem

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