GCW: A Game Theoretic Contention Window Adjustment Approach for IEEE 802.11 WLANs

Ghazvini, Mahdieh; Movahhedinia, Naser; Jamshidi, Kamal

doi:10.1007/s11277-015-2441-z

Cited by 11 publications

(12 citation statements)

References 85 publications

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“…Within the framework of game theory, in [36], a gametheoretic adaptive CW mechanism is proposed for heavy load DCF WLANs. This mechanism makes each node to adjust its CW size independently to improve the performance of the network in which there will be a tradeoff between the throughput, mean delay, and the retransmission attempts.…”

Section: Related Workmentioning

confidence: 99%

An Adaptive EDCA Selfishness-Aware Scheme for Dense WLANs in 5G Networks

et al. 2020

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To keep pace with the current rapid evolution of mobile data requirements, IEEE 802.11 was evolved to provide more desirable performance to fulfill the needs of fifth-generation (5G) and Internet of Things (IoT) networks. It provides two different access contention-based schemes; Distributed Coordination Function (DCF) which not differentiates between different services, and Enhanced Distributed Channel Access (EDCA) which provides differentiation between various services through four priority Access Categories (ACs). The dilemma of the conventional IEEE 802.11 networks is the static assignation of parameters in DCF and EDCA regardless of the number of associated stations and no matter what kind of service is required by each station (i.e., the activity of ACs). Consequently, this led to a significant degradation in the performance of the network, especially in the case of ultra-dense load network. Therefore, in this paper, we introduce a novel algorithm for EDCA considering a dynamic assignation of Arbitration Inter-Frame Space Number (AIFSN) and guidance Contention Window (CW) depending on the number of associated stations and ACs activeness status. Based on the analytical models of EDCA, a game-theoretic method is proposed to make each associated station adapts its transmission probability within the guidance CW. The purpose of guidance CW is a pre-stage to detect the selfish stations which pick up a very low CW to maximize its throughput regardless of the overall network throughput. Simulation results show that the proposed game-based algorithm can obtain higher performance than the standard 802.11 networks in terms of normalized throughput, data dropped during retransmissions limit threshold exceeding, and mean average delay for sensitive delay applications. INDEX TERMS EDCA, high density WLANs, multiple access, selfish nodes, 5G.

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Section: Related Workmentioning

confidence: 99%

An Adaptive EDCA Selfishness-Aware Scheme for Dense WLANs in 5G Networks

et al. 2020

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“…Besides, this method is paired to the plan and execution of upcoming prefabricated designs. Mahdieh Ghazvini et al [13] have suggested a game theory oriented technique to regulate the customers' dispute window in refining the system output, suspension and package drop proportion under hefty traffic load situations. The system presentation, assessed by replications, displays certain dominances of the suggested technique over 802.11-DCF (Distribute Coordinate Function.…”

Section: Related Workmentioning

confidence: 99%

Priority Based Optimized Backoff Algorithm for Collision Avoidance in Wireless Ad Hoc Networks

Kamali¹,

Selvakumar²

2020

jcr

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In wireless ad hoc networks, designing a backoff (BO) algorithm is crucial to avoid collision and to enhance the network throughput. The majority of current MAC protocols have altered the Binary Exponential Backoff (BEB) algorithm to provide relative priority among multiple traffic classes. But the BO interval should be adaptively altered depending on the residual energy and traffic load of contending nodes. Hence this paper designs a priority based optimized BO (PBOB) algorithm for collision avoidance. This algorithm works in standard IEEE 802.11 MAC protocol in which the contending nodes are prioritized based on their residual energy, load and traffic type. Then during contention period, the backoff interval is adaptively adjusted based on the priority of each contending node. By simulation results, it has been show that the PBOB algorithm has better packet delivery ratio and throughput with reduced energy consumption.

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“…Fourier transform IC Wafer, (19) Textile, (20) Metal (21) Gabor wavelet Texture (22) Gabor filter Textile (23,24) Wavelet transform Textile (25)(26)(27) Discrete cosine transform Textile (28) Model-based algorithm Neural network Textile (29) Generic algorithm Metallic surface (30) Support vector machine Metallic surface (21) Independent component analysis Textile, (31) LCD (32) Texem model Marble pixels. This specification was met by a commercially available 5 MP CCD camera, which was capable of capturing images at a dimension of 2048 × 2594 pixels.…”

Section: Imaging Systemmentioning

confidence: 99%

A Practical Low-Cost Machine Vision Sensor System for Defect Classification on Air Bearing Surfaces

2017

Sensors and Materials

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Keywords: air bearing surface, head gimbal assembly, defect detection, machine vision, region of interestIn this paper, we present a newly adapted machine vision method and a practical low-cost machine vision sensor for defect classification of the air bearing surfaces (ABSs) of a hard disk drive, which controls the flying height of the recording heads moving above a disk in operation. A defective ABS can cause poor reading and writing performance; hence, it is necessary to verify its integrity before assembling it into the final product. The proposed sensor system was designed and implemented to detect defects by an effective combination of image segmentation and block matrix techniques as well as classifying them using an expert system under dark-and bright-field conditions. Our system processes subregions of interest and sub-blocks in parallel so that they can take advantage of multiple processor cores. From the trial runs, the small fractional error and low average processing time suggested that our proposed system is effective and can be used in an industrial assembly line.

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GCW: A Game Theoretic Contention Window Adjustment Approach for IEEE 802.11 WLANs

Cited by 11 publications

References 85 publications

An Adaptive EDCA Selfishness-Aware Scheme for Dense WLANs in 5G Networks

An Adaptive EDCA Selfishness-Aware Scheme for Dense WLANs in 5G Networks

Priority Based Optimized Backoff Algorithm for Collision Avoidance in Wireless Ad Hoc Networks

A Practical Low-Cost Machine Vision Sensor System for Defect Classification on Air Bearing Surfaces

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