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Optimal utility-based resource allocation for OFDM networks with multiple types of traffic

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution

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Publication date2008
Host publicationVehicular Technology Conference, 2008. VTC Spring 2008. IEEE
Place of PublicationNew York
PublisherIEEE
Pages2223-2227
Number of pages5
ISBN (Electronic)9781424416448
ISBN (Print)9781424416448
Original languageEnglish
Event67th IEEE Vehicular Technology Conference - Marina Bay, Singapore
Duration: 11/05/200814/05/2008

Conference

Conference67th IEEE Vehicular Technology Conference
CountrySingapore
Period11/05/0814/05/08

Publication series

NameIEEE VTS Vehicular Technology Conference Proceedings
PublisherIEEE
ISSN (Print)1090-3038

Conference

Conference67th IEEE Vehicular Technology Conference
CountrySingapore
Period11/05/0814/05/08

Abstract

This paper considers resource allocation in OFDM wireless networks with mixed real-time and non-realtime traffic patterns. We employ a utility-based framework to balance efficiency and fairness, while satisfying QoS requirements of real-time users. A utility function is assigned to each user over each sub-carrier; this indicates the transmission priority for the user/sub-carrier pair based on the achievable rate and experienced delay, subject to delay and power constraints. The proposed scheduler gives in one shot the sub-carrier and power allocation, plus transmission scheduling for each time-slot. Simulation results indicate that while satisfying real-time users' delay requirements, the proposed method achieves a significant performance improvement in terms of overall throughput and fairness.