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Utility-based adaptive radio resource allocation in OFDM wireless networks with traffic prioritization

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Article number10476352
<mark>Journal publication date</mark>01/2009
<mark>Journal</mark>IEEE Transactions on Wireless Communications
Issue number1
Number of pages6
Pages (from-to)66-71
Publication StatusPublished
<mark>Original language</mark>English
Event67th IEEE Vehicular Technology Conference - Marina Bay, Singapore
Duration: 11/05/200814/05/2008


Conference67th IEEE Vehicular Technology Conference


In this letter, a joint transmit scheduling and dynamic sub-carrier and power allocation method is proposed to exploit multi-user diversity in downlink packet transmission in an OFDM wireless network with mixed real-time and non-real-time traffic patterns. To balance efficiency and fairness and to satisfy the QoS requirements of real-time users, we utilize a utility-based framework and propose a polynomial-time heuristic algorithm to solve the formulated optimization problem. The distinguishing feature of the proposed method is that it gives in one shot, the transmission scheduling, the sub-carriers assigned to each user, and the power allocated to each sub-carrier, based on a fair and efficient framework while satisfying the delay requirements of real-time users.