Cross-Layer Optimization of Fast Video Delivery in Cache-Enabled Relaying Networks

Xiang L, Wing Kwan Ng D, Islam T, Schober R, Wong VWS (2015)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2015

Event location: San Diego, CA US

ISBN: 978-1-4799-5952-5

Abstract

This paper investigates the cross-layer optimization of fast video delivery and caching for minimization of the overall video delivery time in a two-hop relaying network. The half-duplex relay nodes are equipped with both a cache and a buffer which facilitate joint scheduling of fetching and delivery to exploit the channel diversity for improving the overall delivery performance. The fast delivery control is formulated as a two-stage functional non-convex optimization problem. By exploiting the underlying convex and quasi-convex structures, the problem can be solved exactly and efficiently by the developed algorithm. Simulation results show that significant caching and buffering gains can be achieved with the proposed framework, which translates into a reduction of the overall video delivery time. Besides, a trade-off between caching and buffering gains is unveiled.

Authors with CRIS profile

Lin Xiang Lehrstuhl für Digitale Übertragung Robert Schober Lehrstuhl für Digitale Übertragung

Involved external institutions

University of British Columbia CA Canada (CA) University of New South Wales (UNSW) AU Australia (AU)

How to cite

APA:

Xiang, L., Wing Kwan Ng, D., Islam, T., Schober, R., & Wong, V.W.S. (2015). Cross-Layer Optimization of Fast Video Delivery in Cache-Enabled Relaying Networks. In IEEE (Eds.), Proceedings of the 2015 IEEE Global Communications Conference (GLOBECOM). San Diego, CA, US.

MLA:

Xiang, Lin, et al. "Cross-Layer Optimization of Fast Video Delivery in Cache-Enabled Relaying Networks." Proceedings of the 2015 IEEE Global Communications Conference (GLOBECOM), San Diego, CA Ed. IEEE, 2015.

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