TY - GEN
T1 - Cross-layer analysis and design for multimedia services in IEEE 802.11 WLANs
AU - Wang, Chiapin
AU - Lin, Tsungnan
AU - Lin, Pochiang
PY - 2008
Y1 - 2008
N2 - IEEE 802.11 Wireless Local Area Networks (WLAN) supply broadband data accesses and evolve a growing demand of multimedia services for mobile users. To provide quality of service (QoS) for multimedia applications in WLANs, it is important to analyze the performance of 802.11 Medium Access Control (MAC) protocols under varying heterogeneous channel conditions. In this paper, we focus on 802.11 WLANs which adopt the MAC protocol of Distributed Coordination Function (DCF), and provide performance analyses to show the interlayer effect of physical-layer (PHY) channel diversities on DCF protocol as well as the consequent impact on multimedia QoS at application (APP) layer. We then discuss some feasible crosslayer designs for overall optimizing QoS performance in 802.11 WLANs. We also take example of the QoS unfairness problem due to the interlayer impact of PHY channel diversities and illustrate a solution of our cross-layer approach.
AB - IEEE 802.11 Wireless Local Area Networks (WLAN) supply broadband data accesses and evolve a growing demand of multimedia services for mobile users. To provide quality of service (QoS) for multimedia applications in WLANs, it is important to analyze the performance of 802.11 Medium Access Control (MAC) protocols under varying heterogeneous channel conditions. In this paper, we focus on 802.11 WLANs which adopt the MAC protocol of Distributed Coordination Function (DCF), and provide performance analyses to show the interlayer effect of physical-layer (PHY) channel diversities on DCF protocol as well as the consequent impact on multimedia QoS at application (APP) layer. We then discuss some feasible crosslayer designs for overall optimizing QoS performance in 802.11 WLANs. We also take example of the QoS unfairness problem due to the interlayer impact of PHY channel diversities and illustrate a solution of our cross-layer approach.
KW - 802.11 WLANs
KW - Cross-Layer Design
KW - Multimedia
UR - http://www.scopus.com/inward/record.url?scp=67650673263&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67650673263&partnerID=8YFLogxK
U2 - 10.1145/1506270.1506373
DO - 10.1145/1506270.1506373
M3 - Conference contribution
AN - SCOPUS:67650673263
SN - 9781605580890
T3 - Proceedings of the International Conference on Mobile Technology, Applications, and Systems, Mobility'08
BT - Proceedings of the International Conference on Mobile Technology, Applications, and Systems, Mobility'08
T2 - International Conference on Mobile Technology, Applications, and Systems, Mobility'08
Y2 - 10 September 2008 through 12 September 2008
ER -