Deterministic Priority Channel Access Scheme for QoS Support in IEEE 802.11e Wireless LANs

Kim, S.; Huang, Rongsheng; Fang, Yuguang

doi:10.1109/tvt.2008.925319

Cited by 24 publications

(9 citation statements)

References 20 publications

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“…Majority of the studies for EDCA were focused on the AIFS and CW schemes [4,7,9,12,19,24]. For instance, Xiao [24] presented a bi-dimensional Markov chain model for the CW differentiation scheme.…”

Section: Related Workmentioning

confidence: 99%

Performance analysis of a threshold-based dynamic TXOP scheme for intra-AC QoS in wireless LANs

Min

Woodward

2014

Future Generation Computer Systems

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Abstract-The IEEE 802.11e Enhanced Distributed Channel Access (EDCA) protocol has been proposed for provisioning of differentiated Quality-of-Service (QoS) between various Access Categories (ACs), i.e., inter-AC QoS, in Wireless Local Area Networks (WLANs). However, the EDCA lacks the support of the intra-AC QoS provisioning, which is indispensable in the practical WLANs since the network loads are always asymmetric between traffic flows of ACs with the same priority. To address the intra-AC QoS issue, this paper proposes a Threshold-Based Dynamic Transmission Opportunity (TBD-TXOP) scheme which sets the TXOP limits adaptive to the current status of the transmission queue based on the pre-setting threshold. An analytical model is further developed to evaluate the QoS performance of this scheme in terms of throughput, end-to-end delay, and frame loss probability. NS-2 simulation experiments validate the accuracy of the proposed analytical model. The performance results demonstrate the efficacy of TBD-TXOP for the intra-AC QoS differentiation.

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Section: Related Workmentioning

confidence: 99%

Performance analysis of a threshold-based dynamic TXOP scheme for intra-AC QoS in wireless LANs

Min

Woodward

2014

Future Generation Computer Systems

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“…A significant amount of work has been reported on the performance analysis of DCF [1,2,14,17,22] and EDCA [4,5,7,9,10,12,13,15,16,18,[19][20][21]. Majority of the studies for EDCA were focused on the AIFS and CW schemes [5,7,16,20].…”

Section: Related Workmentioning

confidence: 99%

“…Majority of the studies for EDCA were focused on the AIFS and CW schemes [5,7,16,20]. Xiao [20] presented a bi-dimensional Markov chain model for the CW differentiation scheme.…”

Section: Related Workmentioning

confidence: 99%

A Threshold-Based Dynamic TXOP Scheme for Intra-AC QoS Differentiation in IEEE 802.11e Networks

Min

Woodward

2011

2011 14th IEEE International Conference on Computational Science and Engineering

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The IEEE 802.11e Enhanced Distributed Channel Access (EDCA) protocol has been proposed for provisioning of differentiated Quality-of-Service (QoS) between various Access Categories (ACs), i.e., inter-AC QoS, in Wireless Local Area Networks (WLANs). However, the EDCA lacks the support of the intra-AC QoS provisioning, which is indispensable in the practical WLANs since the network loads are always asymmetric between traffic flows of ACs with the same priority. To address the intra-AC QoS issue, this paper proposes a Threshold-Based Dynamic Transmission Opportunity (TBD-TXOP) scheme which sets the TXOP limits adaptive to the current status of the transmission queue based on the pre-setting threshold. We further develop an analytical model to evaluate the performance of this scheme. QoS performance metrics in terms of throughput, end-to-end delay, and frame loss probability are derived. The performance results demonstrate the efficacy of TBD-TXOP for the intra-AC QoS differentiation.

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“…A receiver can recover all the original k packets as long as it successfully receives k distinct packets. The proposed scheme also uses short duration busy tone signals (i.e., pulses of energy) [16,17] to improve efficiency by reducing the excessive control overhead.…”

Section: Introductionmentioning

confidence: 99%

Efficient Multicast Scheme based on Hybrid ARQ and Busy Tone for Multimedia Traffic in Wireless LANs

Kim¹,

Cho²

2014

Appl. Math. Inf. Sci.

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Multicast in wireless LANs (Local Area Networks) is very useful for transmitting multimedia traffic from a sender to a group of receivers. The IEEE 802.11 WLAN MAC (Medium Access Control) layer does not support reliable multicast since, for multicast transmissions, it has no control packets such as the RTS, CTS, and ACK, which are used for unicast transmissions. Several protocols have been proposed to provide reliable multicast transmissions. However, they are not efficient for IEEE 802.11 WLANs due to the large number of packet transmissions and the excessive control overhead caused by the use of a large number of control packets in the error recovery process. In this paper, we propose a simple and effective scheme. The proposed scheme combines FEC (Forward Error Correction) and ARQ (Automatic Repeat reQuest) to reduce a large number of packet transmissions and to provide data reliability in the IEEE 802.11 WLANs multicast environment. It then uses busy tones to improve efficiency by reducing the excessive control overhead. Performance evaluation is conducted using both numerical analysis and simulation. The results show that the proposed scheme has good performance in terms of normalized throughput and average delay.

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Deterministic Priority Channel Access Scheme for QoS Support in IEEE 802.11e Wireless LANs

Cited by 24 publications

References 20 publications

Performance analysis of a threshold-based dynamic TXOP scheme for intra-AC QoS in wireless LANs

Performance analysis of a threshold-based dynamic TXOP scheme for intra-AC QoS in wireless LANs

A Threshold-Based Dynamic TXOP Scheme for Intra-AC QoS Differentiation in IEEE 802.11e Networks

Efficient Multicast Scheme based on Hybrid ARQ and Busy Tone for Multimedia Traffic in Wireless LANs

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