Video broadcasting using queue proportional scheduling

Authors:
Dimitris Toumpakaris;Stavros Kotsopoulos
Affiliations:
Wireless Telecommunications Laboratory, Department of Electrical and Computer Engineering, University of Patras, Rio, Greece;Wireless Telecommunications Laboratory, Department of Electrical and Computer Engineering, University of Patras, Rio, Greece
Venue:
Advances in Multimedia
Year:
2007

Citing 3
Cited 0

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Abstract

Queue Proportional Scheduling (QPS) has been shown to be throughput optimal for Gaussian Broadcast Channels. This paper examines the use of QPS for Video Broadcasting. First, the behavior of QPS is examined as the scheduling frequency is reduced and a method is proposed that uses statistics on the arrival rates to improve its performance. The reduction of the scheduling frequency simplifies the scheduler and decreases the required operations. Then, the packet delay variation is modeled using a Markov Chain approach leading to a method for approximating the packet delay distribution. Based on the resulting distribution, it is discussed how the video encoding rate can be chosen in order to reduce the expected distortion of streams transmitted through Broadcast Channels.