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Qos Enhancement in PCF of IEEE 802.11 through Simulation  

Kim Joong-jae (상명대학교 소프트웨어학부)
Kim Seong-cheol ((주)한터기술)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.9, no.8, 2005 , pp. 1676-1682 More about this Journal
Abstract
PCF(Point Coordination Function) of IEEE 802.11 MAC protocol is an access method oat generally has better performance under high offered load conditions. And it is also appropriate for sending data of time-limited applications. In this paper we consider the QoS(Quality of Service) enhancement method according to the change of nodes in the IEEE 802.11 WLAN. We assume that the un consists or QoS nodes and non-QoS nodes. The QoS nodes has a mechanism to support QoS. we can find the appropriate network parameters by many simulations. And the changes of network status are considered according to the number of nodes.
Keywords
QoS; DCF; PCF;
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  • Reference
1 The Network Simulator ns-2 : http://www.isi.edu/nsnam/ns/
2 IEEE Std 802.11, Part II 'Wireless LAN Medium Access Control(MAC) and Physical Layer(PHY) specifications', IEEE, 1999
3 NS-2 Trace Formats : http://k-lug.org/~griswold/NS2/ns2-trace-formats.html
4 Anders Lindgren, 'Implementation of the PCF mode of IEEE 802.11 for ns-2', http://www.sm.luth.se/~dugdale/index/software.shtml
5 Network Animator : http://www.isi.edu/nsnam/index.html
6 H. Zhu, G. Cao, A. Yener and A. D. Mathias 'EDCF-DM: A Novel Enhanced Distributed Coordination Function for Wireless Ad Hoc Networks', IEEE ICC, Paris, France, June 2004
7 Lamia Romdhani, Qiang Ni, and Thierry Turletti, 'Adaptive EDCF: Enhanced Service Differentiation for IEEE 802.11 Wireless Ad-Hoc Networks,' IEEE WCNC 2003, New Orleans, Louisiana, USA, March 16-20, 2003
8 xgraph :http://www.isi.edu/nsnam/xgraph