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An analytic model for Throughput Optimal Distributed Coordination Function (TO-DCF)

Fitzgerald, Emma LU ; Körner, Ulf LU and Landfeldt, Björn LU (2017) In Telecommunication Systems 66(2). p.197-215
Abstract

TO-DCF, a new backoff scheme for 802.11, has the potential to significantly increase throughput in dense wireless LANs while also opportunistically favouring nodes with heavier traffic loads and/or better channel conditions. In this paper we present an analytical model to investigate the behaviour and performance of the TO-DCF protocol with regards to operating parameters such as the number of nodes, the contention window size and the backoff countdown probabilities. We then compare numerical results from an implementation of our model with simulations. Our model shows a high level of accuracy, even when the model assumptions are relaxed, and provides guidance for network operators to correctly configure the weight functions for nodes... (More)

TO-DCF, a new backoff scheme for 802.11, has the potential to significantly increase throughput in dense wireless LANs while also opportunistically favouring nodes with heavier traffic loads and/or better channel conditions. In this paper we present an analytical model to investigate the behaviour and performance of the TO-DCF protocol with regards to operating parameters such as the number of nodes, the contention window size and the backoff countdown probabilities. We then compare numerical results from an implementation of our model with simulations. Our model shows a high level of accuracy, even when the model assumptions are relaxed, and provides guidance for network operators to correctly configure the weight functions for nodes running TO-DCF given the network’s operating conditions.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
802.11, CSMA, MAC, Wireless LAN
in
Telecommunication Systems
volume
66
issue
2
pages
197 - 215
publisher
Springer
external identifiers
  • scopus:85011591297
  • wos:000408708200004
ISSN
1018-4864
DOI
10.1007/s11235-017-0275-6
language
English
LU publication?
yes
id
bfec30d2-de1d-45e7-981d-18ebd1406d6d
date added to LUP
2017-02-15 12:02:48
date last changed
2018-01-16 13:23:37
@article{bfec30d2-de1d-45e7-981d-18ebd1406d6d,
  abstract     = {<p>TO-DCF, a new backoff scheme for 802.11, has the potential to significantly increase throughput in dense wireless LANs while also opportunistically favouring nodes with heavier traffic loads and/or better channel conditions. In this paper we present an analytical model to investigate the behaviour and performance of the TO-DCF protocol with regards to operating parameters such as the number of nodes, the contention window size and the backoff countdown probabilities. We then compare numerical results from an implementation of our model with simulations. Our model shows a high level of accuracy, even when the model assumptions are relaxed, and provides guidance for network operators to correctly configure the weight functions for nodes running TO-DCF given the network’s operating conditions.</p>},
  author       = {Fitzgerald, Emma and Körner, Ulf and Landfeldt, Björn},
  issn         = {1018-4864},
  keyword      = {802.11,CSMA,MAC,Wireless LAN},
  language     = {eng},
  number       = {2},
  pages        = {197--215},
  publisher    = {Springer},
  series       = {Telecommunication Systems},
  title        = {An analytic model for Throughput Optimal Distributed Coordination Function (TO-DCF)},
  url          = {http://dx.doi.org/10.1007/s11235-017-0275-6},
  volume       = {66},
  year         = {2017},
}