Advanced

Efficient Channel Assignment Algorithms for Infrastructure WLANs Under Dense Deployment

Manitpornsut, S.; Landfeldt, Björn LU and Boukerche, A. (2009) MSWiM '09 12th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems In [Host publication title missing] p.329-337
Abstract
It is well known that WLAN based on the IEEE 802.11 standard suffers from interference and scalability problems due to a limited number of non-overlapping channels. In order to mitigate the interference problem, channel assignment algorithms have been a popular research topic in recent years. It has been shown that such algorithms can greatly reduce the interference among wireless access points. However, in this paper we show that previously proposed channel assignment algorithms may lead to an increased number of hidden nodes in dense network deployments. We also show that this can significantly decrease the performance of the network. Furthermore, we present results from experiments showing that the RTS/CTS mechanism is unable to solve... (More)
It is well known that WLAN based on the IEEE 802.11 standard suffers from interference and scalability problems due to a limited number of non-overlapping channels. In order to mitigate the interference problem, channel assignment algorithms have been a popular research topic in recent years. It has been shown that such algorithms can greatly reduce the interference among wireless access points. However, in this paper we show that previously proposed channel assignment algorithms may lead to an increased number of hidden nodes in dense network deployments. We also show that this can significantly decrease the performance of the network. Furthermore, we present results from experiments showing that the RTS/CTS mechanism is unable to solve the hidden node problem in infrastructure WLANs and therefore, careful consideration needs to be taken when choosing channel assignment strategies in densely deployed wireless networks. To this end, we propose two novel channel assignment algorithms. Using a simulation study, we show that the proposed algorithms can outperform traditional channel assignment in densely deployed scenarios, in terms of QoS sensitive VoIP support without compromising the aggregate throughput and are therefore a better performing alternative in such settings. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
[Host publication title missing]
pages
329 - 337
conference name
MSWiM '09 12th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
external identifiers
  • Scopus:74049148513
ISBN
978-1-60558-616-8
DOI
10.1145/1641804.1641861
language
English
LU publication?
no
id
7376efee-cce6-46dc-ac9d-c4027359fa7f (old id 3173764)
date added to LUP
2012-11-21 14:08:40
date last changed
2016-10-13 04:53:22
@misc{7376efee-cce6-46dc-ac9d-c4027359fa7f,
  abstract     = {It is well known that WLAN based on the IEEE 802.11 standard suffers from interference and scalability problems due to a limited number of non-overlapping channels. In order to mitigate the interference problem, channel assignment algorithms have been a popular research topic in recent years. It has been shown that such algorithms can greatly reduce the interference among wireless access points. However, in this paper we show that previously proposed channel assignment algorithms may lead to an increased number of hidden nodes in dense network deployments. We also show that this can significantly decrease the performance of the network. Furthermore, we present results from experiments showing that the RTS/CTS mechanism is unable to solve the hidden node problem in infrastructure WLANs and therefore, careful consideration needs to be taken when choosing channel assignment strategies in densely deployed wireless networks. To this end, we propose two novel channel assignment algorithms. Using a simulation study, we show that the proposed algorithms can outperform traditional channel assignment in densely deployed scenarios, in terms of QoS sensitive VoIP support without compromising the aggregate throughput and are therefore a better performing alternative in such settings.},
  author       = {Manitpornsut, S. and Landfeldt, Björn and Boukerche, A.},
  isbn         = {978-1-60558-616-8},
  language     = {eng},
  pages        = {329--337},
  series       = {[Host publication title missing]},
  title        = {Efficient Channel Assignment Algorithms for Infrastructure WLANs Under Dense Deployment},
  url          = {http://dx.doi.org/10.1145/1641804.1641861},
  year         = {2009},
}