Admission and Traffic Control Schemes Suitable for QoS Applications in WLAN Systems


This paper proposes the use of admission and traffic control schemes for real-time applications. The admission control scheme determines the admission of high-priority real-time applications such as voice and video streams in terms of their bandwidth utilization time (medium time), whereas the traffic control scheme maintains the communication quality of applications permitted admission by restricting other traffic. Owing to the use of contention-based access, a conventional scheme without admission control will degrade the communication quality when the number of terminals using high-priority applications increases. Moreover, only the capabilities (i.e., frame and sequence procedures) of admission control are defined in the IEEE 802.11e standard; the detailed usage in terms of the application characteristics is not specified, and it may be difficult to achieve a sufficient level of quality of service (QoS). The proposed schemes achieve the optimum QoS for actual services. The software used in the proposed schemes was implemented into hardware at the access point, and was evaluated experimentally. Based on the evaluation results, excellent performances with high QoS applications were obtained.

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T. Hiraguri, T. Kimura, T. Ogawa, H. Takase, A. Kishida and K. Nishimori, "Admission and Traffic Control Schemes Suitable for QoS Applications in WLAN Systems," American Journal of Operations Research, Vol. 2 No. 3, 2012, pp. 382-390. doi: 10.4236/ajor.2012.23046.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] IEEE 802.11e, “Part 11: WLAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Amendment 8: Medium Access Control (MAC) Quality of Service Enhancements,” IEEE 802.11, 2005.
[2] A. Grilo, M. Macedo and M. Nunes, “A Scheduling Algorithm for QoS Support in IEEE 802.11e Networks,” IEEE Wireless Communications, Vol. 10, No. 3, 2003, pp. 36-43. Hdoi:10.1109/MWC.2003.1209594
[3] ITU-T Y.1541, “Network Performance Objectives for IP-Based Services,” May 2002.
[4] M. M. Rashid, E. Hossain and V. K. Bhargava, “HCCA Scheduler Design for Guaranteed QoS in IEEE 802.11e Based WLANs,” IEEE Wireless Communications and Networking Conference (WCNC 2007), 11-15 March 2007, pp. 1538-1543.
[5] M. M. Rashid, E. Hossain and V. K. Bhargava, “Queueing Analysis of 802.11e HCCA with Variable Bit Rate Traffic,” IEEE International Conference on Communications (ICC’06), Vol. 10, 2006, pp. 4792-4798.
[6] S. Hantrakoon and A. Phonphoem, “Priority Based HCCA for IEEE 802.11e,” 2010 International Conference on Communications and Mobile Computing (CMC), Vol. 3, 12-14 April 2010, pp. 485-489. Hdoi:10.1109/CMC.2010.208
[7] D. y. Gao, J. f. Cai and C. W. Chen, “Admission Control Based on Rate-Variance Envelop for VBR Traffic Over IEEE 802.11e HCCA WLANs,” IEEE Transactions on Vehicular Technology, Vol. 57, No. 3, 2007, pp. 1778- 1788.
[8] D. y. Gao, J. f. Cai and K. N. Ngan, “Admission Control in IEEE 802.11e Wireless LANs,” Network, IEEE, vol. 19, No. 4, 2005, pp. 6-13. Hdoi:10.1109/MNET.2005.1470677
[9] C.-T. Chou, S. N. Shankar and K. G. Shin, “Achieving Per-Stream QoS with Distributed Airtime Allocation and Admission Control in IEEE 802.11e Wireless LAN,” Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies (INFO- COM 2005), Vol. 3, 13-17 March 2005, pp. 1584-1595.
[10] C.-L. Chen, “IEEE 802.11e EDCA QoS Provisioning with Dynamic Fuzzy Control and Cross-Layer Interface,” Proceedings of 16th International Conference on Computer Communications and Networks (ICCCN 2007), 13-16 August 2007, pp. 766-771.
[11] K.-H. Lee, H.-J. Lee and J.-H. Kim, “An Active Buffer Management Based on the Virtual Transmission Delay for Video Streaming Service,” Military Communications Conference (MILCOM 2011), 7-10 November 2011, pp. 816-821.
[12] H.-J. Lee and J.-H. Kim, “A Optimal CF-Poll Piggyback Scheme in IEEE 802.11e HCCA,” The 8th International Conference on Advanced Communication Technology (ICACT 2006), Vol. 3, 20-22 February 2006, p. 1959.
[13] A. Andreadis, G. Benelli and R. Zambon, “An Admission Control Algorithm for QoS Provisioning in IEEE 802.11e EDCA,” 3rd International Symposium on Wireless Pervasive Computing (ISWPC 2008), 7-9 May 2008, pp. 298-302.
[14] F. Cacace, G. Iannello, M. Vellucci and L. Vollero, “A Reactive Approach to QoS Provisioning in IEEE 802.11e WLANs,” Next Generation Internet Networks (NGI 2008), 28-30 April 2008, pp. 253-260.
[15] B. Bensaou, Z.-N. Kong and D. H. K. Tsang, “A Measurement-Assisted, Model-Based Admission Control Algorithm for IEEE 802.11e,” International Symposium on Parallel Architectures, Algorithms, and Networks (I- SPAN 2008), 7-9 May 2008, pp. 260-265.
[16] I. Inan, F. Keceli and E. Ayanoglu, “Multimedia Capacity Analysis of the IEEE 802.11e Contention-Based Infrastructure Basic Service Set,” IEEE Global Telecommunications Conference (IEEE GLOBECOM 2008), 30 November-4 December 2008, pp. 1-6.
[17] Y. W. Pei, J.-J. Chen, Y.-C. Tseng and H. Weilee, “Design of QoS and Admission Control for VoIP Services Over IEEE 802.11e WLANs,” Journal of Information Science and Engineering, Vol. 24, 2008, pp. 1003-1022.
[18] K. A. Meerja and A. Shami, “Analysis of Enhanced Collision Avoidance Scheme Proposed for IEEE 802.11e- Enhanced Distributed Channel Access Protocol,” IEEE Transactions on Mobile Computing, Vol. 8, No. 10, 2009, pp. 1353-1367. Hdoi:10.1109/TMC.2009.39
[19] W.-P. Lai, E.-C. Liou and W.-H. Fu, “Dispersive Video Frame Importance Driven Probabilistic Packet Mapping for 802.11e Based Video Transmission,” 2011 Third International Conference on Intelligent Networking and Collaborative Systems (INCoS), 30 November-2 December 2011, pp. 424-429.

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