Utility-optimal random access for wireless multimedia networks

Cheung MH, Mohsenian-Rad H, Wong VWS, Schober R (2012)

Publication Type: Journal article

Publication year: 2012

Journal

IEEE Wireless Communications Letters IEEE Communications Society

Book Volume: 1

Pages Range: 340-343

Article Number: 6202796

Journal Issue: 4

DOI: 10.1109/WCL.2012.051112.120277

Abstract

In this letter, we consider the uplink random access problem in a wireless multimedia network (WMN) with audio, video, and best effort applications. Since these multimedia applications have different quality-of-service (QoS) requirements, we model their utilities with concave, step, and quasi-concave functions. We assume that the access point performs admission control and assigns transmission probabilities to the users for random access, based on solving a non-convex network utility maximization problem. We propose a novel enumeration algorithm to obtain the global optimal solution by solving a number of computationally tractable convex optimization problems. We characterize the total number of iterations of the algorithm analytically. Simulation results show that our proposed algorithm achieves a higher average network aggregate utility than a carrier sense multiple access (CSMA) scheme implemented in a slotted time system. © 2012 IEEE.

Authors with CRIS profile

Robert Schober

Involved external institutions

University of British Columbia CA Canada (CA) Texas Tech University (TTU) US United States (USA) (US)

How to cite

APA:

Cheung, M.H., Mohsenian-Rad, H., Wong, V.W.S., & Schober, R. (2012). Utility-optimal random access for wireless multimedia networks. IEEE Wireless Communications Letters, 1(4), 340-343. https://doi.org/10.1109/WCL.2012.051112.120277

MLA:

Cheung, Man Hon, et al. "Utility-optimal random access for wireless multimedia networks." IEEE Wireless Communications Letters 1.4 (2012): 340-343.

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