Analysis of Different Scheduling Strategies in 802.11e Networks with Multi-Class Traffic

Chetoui, Yassine; Bouabdallah, Nizar; Othman, Jalel Ben

doi:10.1109/lcn.2007.80

Cited by 18 publications

(12 citation statements)

References 15 publications

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“…These types of solutions, although feasible, result in the degradation of the overall bandwidth utilization when the data rate decreases. Another approach to handle fluctuating and VBRs is to apply a bandwidth reclaiming scheme …”

Section: Related Workmentioning

confidence: 99%

“…Another approach to handle fluctuating and VBRs is to apply a bandwidth reclaiming scheme. [11][12][13][14] A prediction scheme was proposed, 15 namely, the HCCA scheduler that dynamically modifies the default arbitration inter-frame space number (AIFSN) values with the aim of enhancing the voice and video communications. The prediction scheme is implemented by carrying out the construction of a J48 decision tree classifier.…”

Section: Related Workmentioning

confidence: 99%

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High performing multimedia transmission approach based on QoS support and admission control over IEEE 802.11e networks

Al-Maqri

Mansoor

Sabri

et al. 2020

Int J Communication

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Summary Hybrid coordination function controlled channel access (HCCA) is a medium to enhance quality of service (QoS) via the IEEE 802.11e standard. The main limitation of HCAA is that it is only efficient for constant bit rate (CBR) applications. This is due to the nature of its scheduler that allocates transmission opportunities (TXOPs) based on traffic stream (TS) specifications (TSPECs) that are determined during the traffic setup time. Variable bit rate (VBR) traffics used in HCCA have nondeterministic profile, making it not optimally and efficiently supported by HCCA. The result of this inefficiency is a deterioration of the transmission performance of multimedia data as well as a drop in the number of served QoS video traffics. We propose a novel approach to deal with this issue, which is the feedback‐based admission control unit (FACU). FACU works by optimizing the usage of extra bandwidth to ensure optimal transmission performance of multimedia data. FACU achieves this by exploiting piggybacked information concerning sequential video frames in order to accurately assign the TXOP. The proposed approach is evaluated by utilizing various video sequences. It is demonstrated that FACU maximizes the overall number of video streams and optimizes the overall usage of the network without having any adverse effects on the QoS constraints determined.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

High performing multimedia transmission approach based on QoS support and admission control over IEEE 802.11e networks

Al-Maqri

Mansoor

Sabri

et al. 2020

Int J Communication

View full text Add to dashboard Cite

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“…Moreover Lo Cigno applies [9] both cited proportional controller as optimal controller algorithms to multi-class traffic with different priorities and to heterogeneous traffic.…”

Section: Scheduling Estimated Transmission Time -Earliest Due Datementioning

confidence: 99%

“…Also dynamically modify, at each polling, the T XOP computation can yet jeopardizes the admission control feasibility test. Instead, a method suitable for providing a dynamic T XOP, without changes in the accorded resources threshold, is a bandwidth reclaiming scheme [6,9,24,28,30].…”

Section: Introductionmentioning

confidence: 99%

Dynamic TXOP HCCA reclaiming scheduler with transmission time estimation for IEEE 802.11e real-time networks

Cecchetti

Ruscelli

Mastropaolo

et al. 2012

Proceedings of the 15th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems

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IEEE 802.11e HCCA reference scheduler guarantees Quality of\ud Service only for Constant Bit Rate traffic streams, whereas its as-\ud signment of scheduling parameters (transmission time TXOP and\ud polling period) is too rigid to serve Variable Bit Rate (VBR) traffic.\ud This paper presents a new scheduling algorithm, Dynamic TXOP\ud HCCA (DTH). Its scheduling scheme, integrated with the central-\ud ized scheduler, uses both a statistical estimation of needed trans-\ud mission duration and a bandwidth reclaiming mechanism with the\ud aim of improving the resource management and providing an in-\ud stantaneous dynamic Transmission Opportunity (TXOP), tailored\ud to multimedia applications with variable bit rate. Performance evaluation through simulation, confirmed by the scheduling analysis, shows that DTH is suitable to reduce the transmission queues length.\ud This positively impacts on the delay and on packets drop rate experienced by VBR traffic streams

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“…Some algorithms have introduced a bandwidth reclaiming to recover unused resources and to reduce the delay in the case of VBR traffic [20], [24], [7]. Anyway, despite the numerous HCCA improved schedulers, QoS provisioning for VBR traffic with real-time requirements is an open issue.…”

Section: Introduction and Related Workmentioning

confidence: 99%

Providing variable TXOP for IEEE 802.11e HCCA real-time networks

Cecchetti

Ruscelli

Mastropaolo

et al. 2012

2012 IEEE Wireless Communications and Networking Conference (WCNC)

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Quality of Service (QoS) provided by the IEEE 802.11e amendment and by the proposed HCF Controlled Channel Access (HCCA) reference scheduler is tailored for Constant Bit Rate traffic streams. Moreover the numerous alternative scheduling algorithms are not suitable to serve Variable Bit Rate (VBR) traffic streams with the required QoS and real-time guarantees.This paper presents Immediate Dynamic TXOP HCCA (IDTH), a new scheduling algorithm based on a bandwidth reclaiming mechanism suitable to cooperate with a HCCA real-time scheduler. IDTH recovers the portion of the transmission time unused by the scheduled stations to provide a further capacity for the next variable bit rate traffic streams. The transmission opportunity of the next scheduled station is assigned considering the available spare resources and the previously used ones. The scheduling analysis and the simulations results show that IDTH is suitable to reduce the delay experienced by VBR traffic streams, to efficiently deal with the variability of multimedia traffic and to avoid waste of resources.

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Analysis of Different Scheduling Strategies in 802.11e Networks with Multi-Class Traffic

Cited by 18 publications

References 15 publications

High performing multimedia transmission approach based on QoS support and admission control over IEEE 802.11e networks

High performing multimedia transmission approach based on QoS support and admission control over IEEE 802.11e networks

Dynamic TXOP HCCA reclaiming scheduler with transmission time estimation for IEEE 802.11e real-time networks

Providing variable TXOP for IEEE 802.11e HCCA real-time networks

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