TY - GEN
T1 - Adaptive channel access tuning and QoS support for multimedia applications over IEEE 802.11e WLANs
AU - Tüysüz, Mehmet Fatih
AU - Mantar, Haci Ali
PY - 2011
Y1 - 2011
N2 - IEEE 802.11e Enhanced Distributed Channel Access (EDCA) standard defines multiple Access Categories (AC) to support MAC-level Quality of Service (QoS). However, the values of the main parameters of each AC are static and do not take the wireless channel condition and the channel density into account. Therefore, the default EDCA parameters only yield good performance for few scenarios. In this paper, we propose a new cross-layer adaptation scheme that improves the IEEE 802.11e Quality of Service (QoS) by tuning the Medium Access Control (MAC) layer channel access parameters. Proposed scheme is based on the number of mobile nodes on the channel, their traffic types, application layer QoS requirements and physical layer (PHY) channel conditions. Simulation results indicate that our scheme outperforms the standard implementation and provides desired QoS for multimedia applications.
AB - IEEE 802.11e Enhanced Distributed Channel Access (EDCA) standard defines multiple Access Categories (AC) to support MAC-level Quality of Service (QoS). However, the values of the main parameters of each AC are static and do not take the wireless channel condition and the channel density into account. Therefore, the default EDCA parameters only yield good performance for few scenarios. In this paper, we propose a new cross-layer adaptation scheme that improves the IEEE 802.11e Quality of Service (QoS) by tuning the Medium Access Control (MAC) layer channel access parameters. Proposed scheme is based on the number of mobile nodes on the channel, their traffic types, application layer QoS requirements and physical layer (PHY) channel conditions. Simulation results indicate that our scheme outperforms the standard implementation and provides desired QoS for multimedia applications.
KW - Channel access tuning
KW - IEEE 802.11e EDCA
KW - Quality of service (QoS)
KW - Wireless networks (WLAN)
UR - http://www.scopus.com/inward/record.url?scp=84856437577&partnerID=8YFLogxK
U2 - 10.1109/ICIMU.2011.6122775
DO - 10.1109/ICIMU.2011.6122775
M3 - Conference contribution
AN - SCOPUS:84856437577
SN - 9781457709890
T3 - 2011 International Conference on Information Technology and Multimedia: "Ubiquitous ICT for Sustainable and Green Living", ICIM 2011
BT - 2011 International Conference on Information Technology and Multimedia
T2 - 2011 International Conference on Information Technology and Multimedia: "Ubiquitous ICT for Sustainable and Green Living", ICIM 2011
Y2 - 14 November 2011 through 16 November 2011
ER -