On providing fairness, QoS support and spectral efficiency in OFDMA/TDD environments Thanh N.H., Van Duc N., Hang L.T., Hanh D., Hung N.T., Tu T.A Faculty of Electronics and Telecommunications, Hanoi University of Technology, Dai Co Viet Rd., Hanoi, Viet Nam; Viettel Technologies, K2 Pham Hung Rd., Cau Giay, Hanoi, Viet Nam; State Agency for Technology Innovation, 26 Ly Thuong Kiet, Hanoi, Viet Nam Abstract: Modern wireless networks, such as WiMAX or LTE are using OFDM/OFDMA as the enabling technologies for broadband transmission in cellular environments with QoS capabilities In these networks, such schema as radio resource management, admission control, scheduling are essential In this article we firstly introduce a Time-Frequency Burst Mapping algorithm for radio resource management that improves the spectral efficiency of OFDMA/TDD channel A Frame-based Weighted Fair Queueing (F-WFQ) Algorithm, which is a modified version of the conventional WFQ and suitable for operations in OFDMA/TDD environments is also proposed When combining the two algorithms, we point out that the spectral efficiency can be maintained, while fairness, delay and proportional throughput of backlog sessions are greatly improved in comparison to the conventional Proportional Fair scheduling algorithm ©2011 IEEE Author Keywords: Fairness; Mapping; OFDMA; QoS; Resource allocation; Scheduling; TDD Index Keywords: A-frames; Admission Control; Broadband transmission; Cellular environment; Enabling technologies; Fairness; Mapping algorithms; OFDMA; Proportional fair scheduling algorithms; QoS; QoS support; Radio resource management; Spectral efficiencies; TDD; Time frequency; Weighted fair queueing; Communication channels (information theory); Conformal mapping; Natural resources management; Photomapping; Resource allocation; Scheduling algorithms; Spectrum analyzers; Wimax; Frequency division multiple access Year: 2011 Source title: International Conference on Information Networking 2011, ICOIN 2011 Art No.: 5723182 Page : 218-223 Link: Scorpus Link Correspondence Address: Thanh, N H.; Faculty of Electronics and Telecommunications, Hanoi University of Technology, Dai Co Viet Rd., Hanoi, Viet Nam; email: thanhnh@mail.hut.edu.vn Conference name: International Conference on Information Networking 2011, ICOIN 2011 Conference date: 26 January 2011 through 28 January 2011 Conference location: Kuala Lumpur Conference code: 84335 ISBN: 9.78161E+12 DOI: 10.1109/ICOIN.2011.5723182 Language of Original Document: English Abbreviated Source Title: International Conference on Information Networking 2011, ICOIN 2011 Document Type: Conference Paper Source: Scopus Authors with affiliations: Thanh, N.H., Faculty of Electronics and Telecommunications, Hanoi University of Technology, Dai Co Viet Rd., Hanoi, Viet Nam Van Duc, N., Faculty of Electronics and Telecommunications, Hanoi University of Technology, Dai Co Viet Rd., Hanoi, Viet Nam Hang, L.T., Viettel Technologies, K2 Pham Hung Rd., Cau Giay, Hanoi, Viet Nam Hanh, D., Faculty of Electronics and Telecommunications, Hanoi University of Technology, Dai Co Viet Rd., Hanoi, Viet Nam Hung, N.T., Faculty of Electronics and Telecommunications, Hanoi University of Technology, Dai Co Viet Rd., Hanoi, Viet Nam Tu, T.A., State Agency for Technology Innovation, 26 Ly Thuong Kiet, Hanoi, Viet Nam References: Dhrona, P., (2007) A Performance Study of Uplink Scheduling Algorithms in Point to Multipoint WiMAX Networks, , Master's thesis, Queens University Andrews, M., A survey of scheduling theory in wireless data networks (2007) IMA Volumes in Mathematics and its Applications, , Springer Demers, A., Keshav, S., Shenker, S., Analysis and simulation of a fair queueing algorithm (1989) SIGCOMM, pp 1-12 , Austin Texas, September Cao, Y., Li, V.O.K., Scheduling algorithms in broadband wireless networks (2001) Proceedings-IEEE, 89 (1), pp 76-87 Fattah, H., Leung, C., An overview of scheduling algorithms in wireless multimedia networks (2002) IEEE Wireless Communications, (5), pp 76-83 Parekh, A.K., Gallager, R.G., Center, I., Heights, Y., A generalized processor sharing approach to flow control in integrated services networks: The multiple node case (1994) IEEE/ACM Transactions on Networking, (2), pp 137-150 Turner, J.S., New directions in communications (or which way to the information age?) 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