Distributed weighted fair queuing in 802.11 wireless LAN

Banchs, Albert; Perez, Xavier Costa

doi:10.1109/icc.2002.997412

Cited by 74 publications

(61 citation statements)

References 7 publications

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“…The service index-based fairness scheduling algorithm (SIB-FS) which accounts for the service received by each flow and adjusts the backoff time for fair service is presented in [3]. Albert Banchs and Xavier Perez [4] extended the DCF (distributed coordinator function) of IEEE 802.11 to provide weighted fair queuing in WLAN. A fair MAC protocol for IEEE 802.11 based ad hoc networks was proposed in [5] to design practical fair media access control frameworks.…”

Section: Introductionmentioning

confidence: 99%

Fairness CSMA/CA MAC Protocol for VLC Networks

Huynh¹,

Jang²

2012

International journal of advanced smart convergence

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This paper presents a fair MAC protocol based on the CSMA/CA algorithm in visible light communication (VLC) networks. The problem of bandwidth sharing among differentiated priority in VLC networks can be solved by using number of backoff time and backoff exponent parameters with AIFS. The proposed algorithm can achieve fair allocation of the bandwidth resource among differentiated priority. The two dimension Markov chain is assisted for analyzing the proposed mechanism about throughput and delay metrics. Numerical results show that our proposed algorithm improves the fairness among different traffic flows.

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Section: Introductionmentioning

confidence: 99%

Fairness CSMA/CA MAC Protocol for VLC Networks

Huynh¹,

Jang²

2012

International journal of advanced smart convergence

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“…Distributed approaches [4][5][6][7][8][9][10][11][12][13], that require every node on the WLAN to implement a mechanism for adjusting the backoff behavior. The main disadvantage of these approaches is that they change the rules of the 802.11 standard and require introducing modifications to the existing hardware.…”

Section: Introductionmentioning

confidence: 99%

A Control Theoretic Approach for Throughput Optimization in IEEE 802.11e EDCA WLANs

2008

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The MAC layer of the 802.11 standard, based on the CSMA/CA mechanism, specifies a set of parameters to control the aggressiveness of stations when trying to access the channel. However, these parameters are statically set independently of the conditions of the WLAN (e.g. the number of contending stations), leading to poor performance for most scenarios. To overcome this limitation previous work proposes to adapt the value of one of those parameters, namely the CW, based on an estimation of the conditions of the WLAN. However, these approaches suffer from two major drawbacks: i) they require extending the capabilities of standard devices or ii) are based on heuristics. In this paper we propose a control theoretic approach to adapt the CW to the conditions of the WLAN, based on an analytical model of its operation, that is fully compliant with the 802.11e standard. We use a Proportional Integrator controller in order to drive the WLAN to its optimal point of operation and perform a theoretic analysis to determine its configuration. We show by means of an exhaustive performance evaluation that our algorithm maximizes the total throughput of the WLAN and substantially outperforms previous standard-compliant proposals.

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“…In terms of fairness, there are a number of research efforts [11], [21] in the literature to enhance the fairness performance of carrier sense multiple access (CSMA)-based MAC. However, information of other nodes (such as received service, service tag, etc.)…”

Section: Advantages Of Our Scheme Compared With Related Workmentioning

confidence: 99%

A New MAC Scheme Supporting Voice/Data Traffic in Wireless Ad Hoc Networks

Wang

Jiang

Zhuang

2008

IEEE Trans. on Mobile Comput.

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Abstract-In wireless ad hoc networks, in addition to the well-known hidden terminal and exposed terminal problems, the locationdependent contention may cause serious unfairness and priority reversal problems. These problems can severely degrade network performance. To the best of our knowledge, so far, there is no comprehensive study to fully address all these problems. In this paper, a new busy-tone-based medium access control (MAC) scheme supporting voice/data traffic is proposed to address these problems. Via two separated narrow-band busy-tone channels with different carrier sense ranges, the proposed scheme completely resolves the hidden terminal and exposed terminal problems. Furthermore, with the use of transmitter busy tones in the node backoff procedure, the proposed scheme ensures guaranteed priority access for delay-sensitive voice traffic over data traffic. The priority is also independent of the user locations, thus solving the priority reversal problem. The fairness performance for data traffic in a nonfully connected environment is also greatly improved (as compared with the popular IEEE 802.11e MAC scheme) without the need of extra information exchanges among the nodes.Index Terms-Wireless ad hoc networks, medium access control, fairness, busy tone, priority, hidden and exposed terminals.

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Distributed weighted fair queuing in 802.11 wireless LAN

Cited by 74 publications

References 7 publications

Fairness CSMA/CA MAC Protocol for VLC Networks

Fairness CSMA/CA MAC Protocol for VLC Networks

A Control Theoretic Approach for Throughput Optimization in IEEE 802.11e EDCA WLANs

A New MAC Scheme Supporting Voice/Data Traffic in Wireless Ad Hoc Networks

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