FHCF: a simple and efficient scheduling scheme for IEEE 802.11e wireless LAN
Mobile Networks and Applications
Channel time allocation scheme based on feedback information in IEEE 802.11e wireless LANs
Computer Networks: The International Journal of Computer and Telecommunications Networking
Feedback-based control for providing real-time services with the 802.11e MAC
IEEE/ACM Transactions on Networking (TON)
Analytical Model for Expected Packet Delay Evaluation in IEEE 802.11e
CMC '09 Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 02
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Queuing Analysis of HCCA for Multi-Rate Wireless LANs with Truncated ARQ Protocol
Wireless Personal Communications: An International Journal
IEEE Transactions on Wireless Communications
Controlled Channel Access Scheduling for Guaranteed QoS in 802.11e-Based WLANs
IEEE Transactions on Wireless Communications
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
Performance analysis of IEEE 802.11e contention-based channel access
IEEE Journal on Selected Areas in Communications
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IEEE 802.11e standard defines two access modes to provide Quality of Service support for 802.11-based Wireless LANs: Enhanced Distributed Channel Access and HCF Controlled Channel Access (HCCA). Only HCCA can guarantee bandwidth per flow which is suitable for various multimedia application requirements. However, the reference scheme HCCA is designed without awareness of variable bit rate (VBR) transmission. Several enhancement techniques have been proposed to address the VBR problem, but there are few research results for a model to capture the characteristics of HCCA. In this paper, an analytical model for the expected packet waiting time is proposed. The model can capture the system behavior per session leading to suitable admission control process for VBR support. The proposed model has been validated using the Network Simulator. The results confirm that the reference admission control scheme with mean data rate acceptance cannot guarantee the required bound on waiting time. Using the model, suitable parameters can be investigated for admission control with VBR support. The model can also be applied with polling based technologies, such as WiMAX.