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  •   Open Research
  • AUT Faculties
  • Faculty of Design and Creative Technologies (Te Ara Auaha)
  • School of Engineering, Computer and Mathematical Sciences - Te Kura Mātai Pūhanga, Rorohiko, Pāngarau
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Improving WLAN performance by modifying an IEEE 802.11 MAC protocol

Sarkar, NI
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Improving WLAN IJWNBT-2011.pdf (1.431Mb)
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http://hdl.handle.net/10292/4147
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Abstract
One of the limitations of the IEEE 802.11 distributed coordination function (DCF) protocol is its low bandwidth utilization under medium-to-high traffic loads resulting in low throughput and high packet delay. To overcome performance problems, traditional IEEE 802.11 DCF (“DCF”) protocol is modified to the buffer unit multiple access (BUMA) protocol. The BUMA protocol achieves a better system performance by introducing a temporary buffer unit at the medium access control (MAC) layer to accumulate multiple packets and combine them into a single packet (with a header and a trailer) before transmission. This paper provides an in-depth performance evaluation (by simulation) of BUMA for multiuser ad hoc and infrastructure networks. Results obtained show that the BUMA is more efficient than that of DCF. The BUMA protocol is simple and its algorithm (software) can be upgraded to 802.11 networks requiring no hardware changes. The BUMA protocol is described and simulation results are presented to verify the performance.
Keywords
BUMA Protocol; Distributed Coordination Function (DCF); IEEE 802.11; Medium Access Control (MAC) Protocol; User-Datagram Protocol (UDP)
Date
March 2011
Source
International Journal of Wireless Networks and Broadband Technologies (IJWNBT), vol.1(1), pp.15 - 31
Item Type
Journal Article
Publisher
IGI Global
DOI
10.4018/ijwnbt.2011010102
Rights Statement
Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited.

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