Group-Based Medium Access Control for IEEE 802.11n Wireless LANs

Abichar, Zakhia; Chang, J. Morris

doi:10.1109/tmc.2011.264

Cited by 33 publications

(10 citation statements)

References 31 publications

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“…GMAC [9] selects a device as a leader in each group and only these leaders contend for channel access. Once a leader of a group wins contention, its members now perform contention so that only limited devices contend at a time.…”

Section: Grouping Algorithmmentioning

confidence: 99%

Collision chain mitigation and hidden device-aware grouping in large-scale IEEE 802.11ah networks

2016

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Section: Grouping Algorithmmentioning

confidence: 99%

Collision chain mitigation and hidden device-aware grouping in large-scale IEEE 802.11ah networks

2016

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“…Upon receiving the information frame along with RDG, the RD responder reacts by acknowledging RDG mainly if there is information that needs to be transmitted or when RDG is absent when no data is available to be transmitted. Then, the RD initiator needs to hold back for the RD responder transfer when the acknowledgement is marked with RDG (Wang and Wei, 2009;Lim and Suh, 2010;Abichar and Chang, 2013) Fig. 10.…”

Section: Reverse Direction Transmissionmentioning

confidence: 99%

“…1. In IEEE802.11, the throughput does not scale well with increasing the physical rate (Xiao and Rosdahl, 2003;Milad et al, 2013a;Saif et al, 2011;Li et al, 2009;Abichar and Chang, 2013). However, in IEEE802.11n, the throughput achieves 100Mbps at a MAC layer.…”

Section: Introductionmentioning

confidence: 99%

Design a New Bidirectional Transmission Protocol to Improve the Performance of MAC Layer Based on Very High Speed WLANs

Milad¹,

Noh²,

Shibghatullah³

et al. 2015

Journal of Computer Science

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This paper presents a new bidirectional transmission protocol with single data frame to computing the performance of MAC layer based on IEEE 802.11n. As high as 600 Mbps of physical data rate is achieved in IEEE 802.11n where high data rate the current MAC layer leads to high performance overhead and low performance of throughput and designing the MAC layer still ongoing to achieve high performance throughput. In this study, a new bidirectional transmission protocol with single data frame has been proposed called BTDF bidirectional transmission data fragmentation, which is divided each data frame from sender to receiver and reverse into subframes and send each subframe, Packets those exceed the size threshold are divided into fragments also where the corrupted subframe will be retransmitted during the disruption of transmission. We have implemented this scheme in NS2 simulator to show the results for TCP and HDTV traffics and compared with literature.

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“…However, the advantage of the TXOP mechanism is not fully exploited in EDCA, because when a node wins the channel, maybe only a few packets arrive. To overcome the drawback of the TXOP mechanism, the delayed channel access (DCA) protocol [14] has been proposed, and it has attracted a great deal of attention [15][16][17][18][19][20][21]. The basic idea of DCA is that a node first waits for an extra random delay before it enters the conventional contention procedure in 802.11 DCF and EDCA, so that more packets can be aggregated for one transmission.…”

Section: Introductionmentioning

confidence: 99%

Analysis and optimization of delayed channel access for wireless cyber-physical systems

Feng

Cheng

et al. 2016

J Wireless Com Network

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In wireless cyber-physical systems (CPS), with a growing number of sensors being deployed, more and more data will be transmitted over wireless links. This essentially requires that wireless network protocols should be further studied and amended to improve their transmission efficiency. The delayed channel access (DCA) protocol is of great practical importance in improving channel utilization. DCA is an improved version of IEEE 802.11 distributed coordination function (DCF). In DCA, a node first waits for an extra delay before it enters the normal DCF procedure, so that more packets can be aggregated and transmitted upon each transmission opportunity. However, how the extra delay affects the performance of DCA has never been theoretically investigated. In this paper, we first propose a theoretical model to characterize the impact of a deterministic extra delay on collision probability, throughput, and medium access control (MAC) delay. With this model, we perform asymptotic analysis to calculate the optimal deterministic delay that can maximize the system throughput. We find that the system performance is significantly affected by the relationship between the deterministic delay and the number of nodes; and therefore, carefully choosing a suitable deterministic delay is crucial in improving channel utilization. The extensive ns2 simulations verify that our model is very accurate, and the theoretical optimal deterministic delay can make the system achieve the maximum system throughput. This study is very useful for better designing and implementing the packet aggregation technology that has been adopted by IEEE wireless networking standards including 802.11n and the latest 802.11ac.

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Group-Based Medium Access Control for IEEE 802.11n Wireless LANs

Cited by 33 publications

References 31 publications

Collision chain mitigation and hidden device-aware grouping in large-scale IEEE 802.11ah networks

Collision chain mitigation and hidden device-aware grouping in large-scale IEEE 802.11ah networks

Design a New Bidirectional Transmission Protocol to Improve the Performance of MAC Layer Based on Very High Speed WLANs

Analysis and optimization of delayed channel access for wireless cyber-physical systems

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