Proceedings of the 3rd international conference on Mobile multimedia communications
An admission control algorithm for multi-hop 802.11e-based WLANs
Computer Communications
Mobile Networks and Applications
IEEE Transactions on Wireless Communications
Routing and admission control for wireless mesh networks with directional antennas
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Cross-layer QOS architecture for 4G heterogeneous network services
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 1
Back-of-the-envelope computation of throughput distributions in CSMA wireless networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Interference-aware routing for multi-hop Wireless Mesh Networks
Computer Communications
On link-level starvation in dense 802.11 wireless community networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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QoS provisioning in multi-hop IEEE 802.11 networks is very challenging due to the interference nature of wireless medium and the contention-based behavior among neighboring nodes. In such networks, one of the key questions for QoS support is: given a specific topology and traffic condition, how much bandwidth can be utilized along a path in the network without violating QoS demand of existing traffic? Considering that in general QoS-sensitive traffic has the well-controlled sending rate, one key observation is that the network unsaturated condition should be considered. Another observation is that, not only the interaction between the new traffic and the existing ones that can be sensed (by the new one), but also the interaction between the new traffic and the traffic that is hidden but can have influence upon the new one should be studied. Based upon the above observations, we propose an analytical model for multi-hop IEEE 802.11 networks to calculate how much bandwidth can be utilized along a path without violating the QoS requirements of existing traffic. A notion, "free channel time", which is the time allowed for a wireless link to transmit data, is introduced to analyze the path capacity. Simulation results demonstrate that our proposed analytical model can accurately predict the path capacity under various network conditions without breaking QoS demands of all existing traffic