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An Analysis of a Modified Point Coordination Function in IEEE 802.11 Wireless LAN

Kanjanavapastit, A. and Landfeldt, Björn LU (2003) 14th IEEE Proceedings on Personal, Indoor and Mobile Radio Communications, PIMRC 2003. In [Host publication title missing] 2. p.1732-1736
Abstract
Since the point coordination function (PCF) in the IEEE 802.11 is based on a centralized polling protocol, some bandwidth is wasted due to the polling overheads and also due to packets that are issued in case a polled station does not have any data to transmit. In order to reduce this waste and increase the channel utilization, we have proposed a modified version of the standard PCF. The modified PCF uses a distributed polling protocol (DPP) as the access mechanism for the uplink transmission of real-time traffic. The transmission period in the modified PCF consists of a distributed polling protocol period (DPPP) which is controlled by the DPP and the real-time traffic downlink period (KTDP). Our proposal further includes a technique for... (More)
Since the point coordination function (PCF) in the IEEE 802.11 is based on a centralized polling protocol, some bandwidth is wasted due to the polling overheads and also due to packets that are issued in case a polled station does not have any data to transmit. In order to reduce this waste and increase the channel utilization, we have proposed a modified version of the standard PCF. The modified PCF uses a distributed polling protocol (DPP) as the access mechanism for the uplink transmission of real-time traffic. The transmission period in the modified PCF consists of a distributed polling protocol period (DPPP) which is controlled by the DPP and the real-time traffic downlink period (KTDP). Our proposal further includes a technique for dealing with the hidden station problem for use together with the proposed modification. In this paper, an analysis is done to compare the performance of the modified PCF with the standard PCF in terms of number of supportable stations in a contention-free period (CFP) and the channel efficiency. The analytical results show that the modified PCF can support a much higher number of stations than the standard PCF. In addition, the channel efficiency of the modified PCF is better under the assumption that there is no hidden station in the system. The results imply that the channel utilization of the modified PCF is better than the standard PCF. (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]
volume
2
pages
1732 - 1736
conference name
14th IEEE Proceedings on Personal, Indoor and Mobile Radio Communications, PIMRC 2003.
external identifiers
  • scopus:79955589161
ISBN
0-7803-7822-9
DOI
10.1109/PIMRC.2003.1260411
language
English
LU publication?
no
id
43999436-1e50-4ada-ad00-1b4a1a85e215 (old id 3216691)
date added to LUP
2012-11-27 14:31:57
date last changed
2017-04-16 04:35:50
@inproceedings{43999436-1e50-4ada-ad00-1b4a1a85e215,
  abstract     = {Since the point coordination function (PCF) in the IEEE 802.11 is based on a centralized polling protocol, some bandwidth is wasted due to the polling overheads and also due to packets that are issued in case a polled station does not have any data to transmit. In order to reduce this waste and increase the channel utilization, we have proposed a modified version of the standard PCF. The modified PCF uses a distributed polling protocol (DPP) as the access mechanism for the uplink transmission of real-time traffic. The transmission period in the modified PCF consists of a distributed polling protocol period (DPPP) which is controlled by the DPP and the real-time traffic downlink period (KTDP). Our proposal further includes a technique for dealing with the hidden station problem for use together with the proposed modification. In this paper, an analysis is done to compare the performance of the modified PCF with the standard PCF in terms of number of supportable stations in a contention-free period (CFP) and the channel efficiency. The analytical results show that the modified PCF can support a much higher number of stations than the standard PCF. In addition, the channel efficiency of the modified PCF is better under the assumption that there is no hidden station in the system. The results imply that the channel utilization of the modified PCF is better than the standard PCF.},
  author       = {Kanjanavapastit, A. and Landfeldt, Björn},
  booktitle    = {[Host publication title missing]},
  isbn         = {0-7803-7822-9},
  language     = {eng},
  pages        = {1732--1736},
  title        = {An Analysis of a Modified Point Coordination Function in IEEE 802.11 Wireless LAN},
  url          = {http://dx.doi.org/10.1109/PIMRC.2003.1260411},
  volume       = {2},
  year         = {2003},
}