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Robust QoS Control for Single Carrier PMP Mode IEEE 802.16 Systems
April 2008 (vol. 7 no. 4)
pp. 416-429
The IEEE 802.16 WirelessMAN standard provides a comprehensive quality-of-service (QoS) control structure to enable flow isolation and service differentiation over the common wireless network interface. By specifying a particular set of service parameters, the media access control (MAC) mechanisms defined in the standard are able to offer predefined QoS provisioning on per-connection basis. However, the design of efficient, flexible and yet robust MAC scheduling algorithms for such QoS provisioning still remains an open topic. This paper proposes a new QoS control scheme for single-carrier point-to-multipoint mode WirelessMAN systems, that enables the predefined service parameters to control the service provided to each uplink and downlink connection. By MAC-PHY cross-layer resource allocation, the proposed scheme is robust against particular wireless link degradation. Detailed simulation experiments are presented to study the performance and to validate the effectiveness of the proposed QoS control scheme.

[1] S.J. Vaughan-Nichols, “Achieving Wireless Broadband with WiMax,” Computer, vol. 37, no. 6, pp. 10-13, June 2004.
[2] G. Goth, “Wireless MAN Standard Signals Next-Gen Opportunities,” IEEE Distributed Systems Online, vol. 5, no. 8, p. 4, Aug. 2004.
[3] IEEE Std 802.16-2004, IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems, IEEE, punumber=9349 , Oct. 2004.
[4] IEEE Std 802.16-2001, IEEE Std. 802.16-2001 IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems, IEEE, http://ieeexplore. , Apr. 2002.
[5] IEEE Std 802.16a-2003, IEEE Standard for Local and Metropolitan Area Networks—Part 16: Air Interface for Fixed Broadband Wireless Access Systems—Amendment 2: Medium Access Control Modifications and Additional Physical Layer Specifications for 2-11 GHz, IEEE, , Jan. 2003.
[6] K. Wongthavarawat and A. Ganz, “Packet Scheduling for QoS Support in IEEE 802.16 Broadband Wireless Access Systems,” Int'l J. Comm. Systems, vol. 16, pp. 81-96, 2003.
[7] D. Niyato and E. Hossain, “Queue-Aware Uplink Bandwidth Allocation and Rate Control for Polling Service in IEEE 802.16 Broadband Wireless Networks,” vol. 5, no. 6, pp. 668-679, June 2006.
[8] H.S. Alavi, M. Mojdeh, and N. Yazdani, “A Quality of Service Architecture for IEEE 802.16 Standards,” Proc. IEEE Asia-Pacific Conf. Comm., pp. 249-253, Oct. 2005.
[9] J. Chen, W. Jiao, and H. Wang, “A Service Flow Management Strategy for IEEE 802.16 Broadband Wireless Access Systems in TDD Mode,” Proc. IEEE Int'l Conf. Comm. (ICC '05), vol. 5, pp.3422-3426, May 2005.
[10] S.A. Xergias, N. Passas, and L. Merakos, “Flexible Resource Allocation in IEEE 802.16 Wireless Metropolitan Area Networks,” Proc. 14th IEEE Workshop Local and Metropolitan Area Networks (LANMAN '05), pp. 1-6, Sept. 2005.
[11] H. Wang, W. Li, and D.P. Agrawal, “Dynamic Admission Control and QoS for 802.16 Wireless MAN,” Proc. IEEE Wireless Telecomm. Symp. (WTS '05), pp. 60-66, Apr. 2005.
[12] Q. Liu, S. Zhou, and G.B. Giannakis, “Queuing with Adaptive Modulation and Coding over Wireless Links: Cross-Layer Analysis and Design,” IEEE Trans. Wireless Comm., vol. 4, no. 3, pp. 1142-1153, May 2005.
[13] A. Scaglione and M. van der Schaar, “Cross-Layer Resource Allocation for Delay-Constrained Wireless Video Transmission,” Proc. IEEE Int'l Conf. Acoustics, Speech, and Signal Processing (ICASSP '05), vol. 5, pp. v/909-v/912, Mar. 2005.
[14] S. Ramachandran, C.W. Bostian, and S.F. Midkiff, “A Link Adaptation Algorithm for IEEE 802.16,” Proc. IEEE Wireless Comm. and Networking Conf. (WCNC '05), vol. 3, pp. 1466-1471, Mar. 2005.
[15] Y. Yao and J. Sun, “Study of UGS Grant Synchronization for 802.16,” Proc. Ninth Int'l Symp. Consumer Electronics (ISCE '05), pp.105-110, June 2005.
[16] L. Zhang, “VirtualClock: A New Traffic Control Algorithm for Packet-Switched Networks,” ACM Trans. Computer Systems, vol. 9, no. 2, pp. 101-124, May 1991.
[17] The Network Simulator-ns-2,, 2008.
[18] X. Bai, A. Shami, K.A. Meerja, and C. Assi, “New Distributed QoS Control Scheme for IEEE 802.16 Wireless Access Networks,” Proc. IEEE Global Telecomm. Conf. (Globecom '06), Nov. 2006.

Index Terms:
Network Protocols, Wireless Communication, Network Communications, Access Schemes, Algorithm/protocol design and analysis
Xiaofeng Bai, Abdallah Shami, Yinghua Ye, "Robust QoS Control for Single Carrier PMP Mode IEEE 802.16 Systems," IEEE Transactions on Mobile Computing, vol. 7, no. 4, pp. 416-429, April 2008, doi:10.1109/TMC.2007.70738
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