Network information based rate controls on multimedia streaming servers

In this paper, a concept of a network-driven adaptive video streaming is proposed and investigated in a state-of-the art UMTSIHSDPA network in order to alleviate the impact of strongly time-varying quality of wireless links on video quality. We propose making adaptation decisions in a radio access network based on channel-quality information available there. This is done by a so-called Multimedia Network Controller (MNC), which is aware of server and client capabilities and the channel quality. Upon a decision, the MNC sends a rate switching request to the video server, which adapts its data rate. We evaluate results with a novel PSNRlvideo-interruptions diagram allowing to show and to compare video quality graphically in a compact form. For the performance evaluation, we developed a comprehensive video streaming testbed around a detailed UMTSIHSDPA emulation tool.

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Discrete LQ Rate Control for MPEG2 Video Streaming System

Zhou¹,

Ong

2008

JMM

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In this paper, we propose a novel rate control system by applying the discrete linear quadratic rate control method (DLQ) to transmissions of MPEG2 streams in IP networks. We give out the detail deduction for disturbed-DLQ-regulator problem and the corresponding methods to implement the results into media streaming rate control. Study shows that DLQ is superior to conventional rate control schemes especially in client buffer utilization. Besides the basic DLQ method, we also investigate DLQ under heavy-traffic scenarios and provide improvements for this special case. The influences of delay, with respect to different mean values and variances, are discussed carefully.

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Network information based rate controls on multimedia streaming servers

Cited by 3 publications

References 6 publications

Discrete LQ rate control schedule system for multimedia transmission

Discrete LQ rate control schedule system for multimedia transmission

Network-driven adaptive video streaming in wireless environments

Discrete LQ Rate Control for MPEG2 Video Streaming System

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