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An optimized A-MSDU frame aggregation with subframe retransmission in IEEE 802.11n wireless networks


Saif, Anwar and Othman, Mohamed and K. Subramaniam, Shamala and Abdul Hamid, Nor Asilah Wati (2012) An optimized A-MSDU frame aggregation with subframe retransmission in IEEE 802.11n wireless networks. Procedia Computer Science, 9. pp. 812-821. ISSN 1877-0509


The IEEE 802.11n standard is defined to achieve a high throughput at the MAC layer. This high throughput is accomplished via many enhancements in both the physical and MAC layers. A key enhancement introduced in the 802.11n standard is frame aggregation. Two types of aggregation defined by the 802.11n standard, aggregate MAC service data unit (A-MSDU) and aggregate MAC protocol data unit (A-MPDU). Frame aggregation reduces both the headers and timing overheads at the MAC layer by aggregating multiple frames into a single large frame before being transmitted. The aggregation headers themselves still have a negative impact on the network performance especially when aggregating frames of small payload. Moreover, the lack of partial retransmission in the A-MSDU aggregation is behind its poor performance in error-prone channels. In this paper we proposed an optimized header A-MSDU frame aggregation (OHA-MSDU) with subframes retransmission capability at the MSDU level. The simulation results show the significance of the proposed scheme, especially for applications that have a small frame size such as VoIP.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Computer Science and Information Technology
DOI Number: https://doi.org/10.1016/j.procs.2012.04.087
Publisher: Elsevier
Keywords: Frame aggregation; Selective retransmission: SRA-MSDU; A-MSDU; Next generation networks; 802.11n
Depositing User: Mohd Noor Ismail
Date Deposited: 04 May 2016 03:50
Last Modified: 04 May 2016 03:50
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.procs.2012.04.087
URI: http://psasir.upm.edu.my/id/eprint/43080
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