Enhanced BlockACK method for A‐MPDU transmission in IEEE 802.11n/ac/ad WLANs

Liu, Ji‐Long; Yao, Mingwu; Qiu, Zhiliang

doi:10.1049/el.2015.3453

Cited by 10 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The idea is that transmitter send information about each aggregated subframe to the receiver and this is later used for acknowledging the packet. However, this increases overhead, which in point to multipoint would impact overall system's capacity (Liu et. al 2016).…”

Section: State-of-the-art Advancements In Ieee 80211 Media Access Comentioning

confidence: 99%

Investigation of Media Access Control in Wireless Networks

Cuzanauskas¹

2018

View full text Add to dashboard Cite

Vadovas doc. dr. Aurimas ANSKAITIS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-01T) (2013-2016), prof. dr. Šarunas PAULIKAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-01T) (2017-2018). Vilniaus Gedimino technikos universiteto Elektros ir elektronikos inžinerijos mokslo krypties disertacijos gynimo taryba: Pirmininkas prof. dr. Dalius NAVAKAUSKAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-01T). Nariai: dr. Rimvydas ALEKSIEJŪNAS (Vilniaus universitetas, fizika-02P), prof. dr. Artūras SERACKIS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-01T), dr. Szymon SZOTT (Stanislavo Stašico vardo kalnakasybos ir metalurgijos akademija, elektros ir elektronikos inžinerija-01T), doc. dr. Dainius UDRIS (Vilniaus Gedimino technikos universitetas, technologijos mokslai, elektros ir elektronikos inžinerija-01T). Disertacija bus ginama viešame Elektros ir elektronikos inžinerijos mokslo krypties disertacijos gynimo tarybos posėdyje 2018 m. rugpjūčio 27 d. 14 val. Vilniaus Gedimino technikos universiteto senato posėdžių salėje.

show abstract

Section: State-of-the-art Advancements In Ieee 80211 Media Access Comentioning

confidence: 99%

Investigation of Media Access Control in Wireless Networks

Cuzanauskas¹

2018

View full text Add to dashboard Cite

show abstract

“…The work by Qian et al [8] highlighted that, two-level aggregation is created by combining A-MSDU and A-MPDU. However, the performance of frame aggregation methods suffered severely in an erroneous channel, which can lead to the emergence of unexpected problems such as corruption aggregation frames [9]- [12]. Certain improvements to the traditional frame aggregation method are suggested as a result of these challenges.…”

Section: Introductionmentioning

confidence: 99%

Two-level frame aggregation with enhanced A-MPDU for signal-to-noise ratio efficiency in IEEE 802.11n WLANs

Sorra

Othman

Bukar

et al. 2023

IJEECS

View full text Add to dashboard Cite

<p>One of the most important frame aggregation features for enhancing the speed of IEEE 802.11n wireless local area networks (WLANs) through sharing headers and timing overheads is an aggregate MAC protocol data unit (A-MPDU). However, because aggregation overhead affects A-MPDU frame size, the A-MPDU performance falls short of user expectations. The variable signal-to-noise ratio (SNR) is significantly decreased as a result of the influence of lost sub-frame on the volume of sub-frames that may be aggregated (the level of aggregation). In order to solve this issue, this study suggests an improved A-MPDU with reduced header overheads as well as a efficient two-level aggregation technique based on enhanced A-MPDU. To test the suggested plan, a simulation experiment was run on NS-3. The results show that the suggested two-level aggregation approach works better than the existing methods by achieving higher throughput, SNR, and a efficient medium access control (MAC) layer.</p>

show abstract

“…Bit position n of the block Ack bitmap, if set to 1, acknowledges receipt of a subframe with the sequence control value equal to (block Ack starting sequence (SS) control + n ). Bit position n of the block Ack bitmap, if set to 0, indicates that a subframe with sequence control value equal to (block Ack SS control + n ) has not been received [2, 3]. However, there is currently no aggregation scheduler designed specifically for industrial WLAN devices.…”

Section: Introductionmentioning

confidence: 99%

Enhanced aggregation scheduler design in industrial 802.11 devices

2017

Electron. lett.

View full text Add to dashboard Cite

Industrial WLAN devices suffer from interface delay and poor CPU performance, which would incur an inevitable cost of throughput for aggregation schemes. An enhanced aggregation scheduler is proposed. In this proposed method, the originator's behaviour in both the upper media access control (MAC) and the lower MAC layer is modified. The originator pre-stores subframes of the next aggregated data units despite that the block Ack is not received. Through utilising the modified method, the hardware delay overhead was minimised. Implementation on own chipset indicates that with this aggregation scheduler, higher throughput can be achieved than conventional scheduler, especially when using high rates. Introduction: Frame aggregation schemes are proposed in 802.11 n/ac/ ad to boost the performance of high-throughput WLANs [1]. It was originally known in 802.11n as one of the significant improvement, where two types of frame aggregation schemes were introduced, the aggregate media access control (MAC) service data unit (A-MSDU) and the aggregate MAC protocol data unit (A-MPDU). Block Ack frame is used to acknowledge the aggregated data units using a block Ack information field and a bitmap field. The bitmap subfield is 128 octets in length and is used to indicate the received status of up to 64 data units. Bit position n of the block Ack bitmap, if set to 1, acknowledges receipt of a subframe with the sequence control value equal to (block Ack starting sequence (SS) control + n). Bit position n of the block Ack bitmap, if set to 0, indicates that a subframe with sequence control value equal to (block Ack SS control + n) has not been received [2, 3]. However, there is currently no aggregation scheduler designed specifically for industrial WLAN devices. In non-aggregation transmissions, lost data units are retransmitted by the hardware. Nevertheless, the aggregated subframes can only be retransmitted by the upper layer due to limited RAM resources in industrial implementations. Currently, most portable wireless devices use interfaces such as secure digital input and output (SDIO), universal serial bus (USB) and serial peripheral interface (SPI). However, those interfaces suffer from huge command overhead and small clock frequency. Poor CPU performance would also increase the delay.

show abstract

Enhanced BlockACK method for A‐MPDU transmission in IEEE 802.11n/ac/ad WLANs

Cited by 10 publications

References 3 publications

Investigation of Media Access Control in Wireless Networks

Investigation of Media Access Control in Wireless Networks

Two-level frame aggregation with enhanced A-MPDU for signal-to-noise ratio efficiency in IEEE 802.11n WLANs

Enhanced aggregation scheduler design in industrial 802.11 devices

Contact Info

Product

Resources

About