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


Citation

Saif, Anwar and Othman, Mohamed and K. Subramaniam, Shamala and Abdul Hamid, Nor Asila Wati (2012) An optimized A-MSDU frame aggregation with subframe retransmission in IEEE 802.11n wireless networks. In: International Conference on Computational Science (ICCS 2012), 4-6 June 2012, Omaha, United States. (pp. 1-10).

Abstract

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: Conference or Workshop Item (Paper)
Divisions: Faculty of Computer Science and Information Technology
DOI Number: https://doi.org/10.1016/j.procs.2012.04.087
Publisher: ScienceDirect (Elsevier Ltd.)
Keywords: Frame aggregation; Selective retransmission; SRA-MSDU; A-MSDU; Next generation networks; 802.11n.
Depositing User: Azian Edawati Zakaria
Date Deposited: 27 Mar 2015 02:25
Last Modified: 27 Mar 2015 02:53
Altmetrics: http://www.sciencedirect.com/science/article/pii/S1877050912002086#&doi=10.1016/j.procs.2012.04.087
URI: http://psasir.upm.edu.my/id/eprint/33757
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