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GLOBECOM
2009
IEEE

A Suboptimal Network Utility Maximization Approach for Scalable Multimedia Applications

8 years 10 months ago
A Suboptimal Network Utility Maximization Approach for Scalable Multimedia Applications
—Wired and wireless data networks have witnessed an explosive growth of inelastic traffics such as real-time or media streaming applications. Recently, applications relying on layered encoding schemes appeared in the context of live-streaming and video and audio delivery applications. This paper addresses the Network Utility Maximization (NUM) for scalable multimedia transmission which is relying on layered encoding schemes. Nonconvexity of the NUM problem for such applications makes dualbased approaches incompetent, whereby achieving optimality proves quite challenging. We adopt the staircase utility function and formulate the underlying optimization problem. To tackle the non-convexity of the problem, we use a smooth approximation of the staircase utility function and propose a dual-based distributed algorithm for rate allocation and bandwidth sharing in such scenarios. Numerical results show that the proposed algorithm achieves suboptimal yet efficient solution.
Mohammad Sadegh Talebi, Ahmad Khonsari, Mohammad H
Added 21 May 2010
Updated 21 May 2010
Type Conference
Year 2009
Where GLOBECOM
Authors Mohammad Sadegh Talebi, Ahmad Khonsari, Mohammad H. Hajiesmaili, Sina Jafarpour
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