An Enhanced Feedback-Base Downlink Packet Scheduling Algorithm for Mobile TV in WIMAX Networks

Joseph Oyewale, Liu Xiao Juan



With high speed access network technology like WIMAX, there is the need for efficient management of radio resources where the throughput and Qos requirements for Multicasting Broadcasting Services (MBS) for example TV are to be met. An enhanced  feedback-base downlink Packet scheduling algorithm  that can be used in IEEE 802.16d/e networks for mobile TV “one way traffic”(MBS) is needed to support many users utilizing multiuser diversity of the  broadband of WIMAX systems where a group of users(good/worst channels) share allocated resources (bandwidth). This paper proposes a WIMAX framework feedback-base (like a channel-awareness) downlink packet scheduling algorithm for Mobile TV traffics in IEEE806.16, in which network Physical Timing Slots (PSs) resource blocks are allocated in a dynamic way to mobile TV subscribers based on the Channel State information (CSI) feedback, and then considering users with worst channels with the aim of improving system throughput while system coverage is being guaranteed. The algorithm was examined by changing the PSs bandwidth allocation of the users and different number of users of a cell. Simulation results show our proposed algorithm performed better than other algorithms (blind algorithms) in terms of improvement in system throughput performance.

Doi: 10.12777/ijse.5.1.55-62

[How to cite this article: Oyewale, J. and , Juan, L.X.. (2013). An Enhanced Feedback-Base Downlink Packet Scheduling Algorithm for Mobile TV in WIMAX Networks. International Journal of Science and Engineering, 5(1),55-62. Doi: 10.12777/ijse.5.1.55-62]


Bandwidth (BW) Channel Quality Indicator (CQI); Multicast Broadcasting Services (MBS); Multiuser diversity; Physical Time Slots (PSs); Packet Scheduler (PS); Signal-to-Noise plus Distortion Ratio (SNDR).

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Ahmed K.F. Khattab and K.M.F, Elsayed, (2006). Opportunistic Scheduling of Delay Sensitive Traffic in OFDMA Based Wireless. In WOWMOM ’06: IEEE Proceedings of the 2006 International Symposium on World of Wireless, Mobile and Multimedia Networks, pp. 279–88.

L. Wan, W. Ma, and Z. Guo, (2007). “A Cross-layer Packet Scheduling and Sub-channel Allocation Scheme in 802.16e OFDMA System,” IEEE Wireless Communications and Networking Conference, WCNC march 2007, pp. 1865-1870, Hong Kong.

H.K. Rath, A. Bhorkar and Vishal Sharma, (2006). An Opportunistic Uplink Scheduling Scheme to Achieve Bandwidth Fairness and Delay for Multiclass Traffic in WiMAX (IEEE 802.16) Broadband Wireless Networks. In Proceedings of IEEE Global Telecommunications Conference (GLOBECOM), pp. 1–5.

H. K. Rath, A. Bhorkar, and V. Sharma, (2006). “An Opportunistic DRR (O-DRR) Uplink Scheduling Scheme for IEEE 802.16-based Broadband Wireless

Networks”, IETE, International Conference on Next Generation Networks (ICNGN), Mumbai, Chania, Greece, 18 - 21.

Q. Liu, X. Wang, G.B. Giannakis, (2006). “A Cross-Layer Scheduling Algorithm With QoS Support in Wireless Networks”, IEEE Transactions on Vehicular Technology, Vol. 55 pp. 839 – 847.

J. M. Liang, J. J. Chen, Y. C. Wang, Y.C. Tseng, B.S. Lin, (2009). “Priority-Based Scheduling Algorithm for Downlink Traffics in IEEE 802.16 Networks”, IEEE Asia-Pacific Wireless Com. Symposium,

Maode Ma. (2009). Current Technology evelopments of WiMax Systems. Nanyang technological University, school of Electronic and Electrical Engineering, Singapore.

WiMAX Forum, “WiMAX System Evaluation Methodology V2.1,” 230 pp, July 2008, available at

Shan Lu, (2009)."Channel-Aware Frequency Domain Packet Scheduling for MBMS in LTE", VTC Spring IEEE 69th Vehicular Technology Conference.

Seok Yee Tang et al., (2010). Wimax Security and Quality of Service: An End to End Perspective.

Chakchai So-In et al, (2010). “ Resource Allocation in IEEE 802.16 Mobile WiMAX” Published in “Orthogonal Frequency Division Multiple Access (OFDMA),” Edited by Tao Jiang, Lingyang Song, Yan Zhang, Auerbach Publications, CRC Press, ISBN: 1420088246.

H. Wang and V. B. Iversen, (2008) "Hierarchical downlink resource management framework for OFDMA based WiMAX systems," in Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE, pp. 1709-1715.


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