Quality adaptation for congestion controlled video playback over the Internet

RejaieReza,; HandleyMark,; EstrinDeborah,

doi:10.1145/316194.316222

Cited by 81 publications

(72 citation statements)

References 8 publications

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“…Multimedia transmission research [32,35] has considered techniques that dynamically adjust the amount of information encoded in the multimedia stream to meet the bandwidth available between the sender and the receiver. In many cases, these schemes cannot afford to drop packets or use forwarderror correction mechanisms.…”

Section: Transfer Of Bulk Datamentioning

confidence: 99%

Hybrid and forward error correction transmission techniques for unreliable transport of 3D geometry

2005

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Abstract. The continual improvement in computer performance together with the prevalence of high-speed network connections having high throughput and moderate latencies enables the deployment of multimedia applications, such as collaborative virtual environments, over wide area networks. These applications can serve as simulated environments in scenarios such as emergency response training to catastrophic disasters, military training, and entertainment. Many of these systems use 3D graphics for display and may be required to distribute geometric models on demand between participants. Progressive meshes provide an attractive mechanism for such distribution. Previous uses of progressive meshes have sent data using reliable protocols (TCP). However, such protocols have disadvantages in on-demand settings, in that they: (1) use flow control, which limits performance in wide area networks; (2) add additional bandwidth when there is loss; (3) treat all loss as an indication of congestion; and (4) require feature-rich multicast support, which is not always available. In this paper, we modify progressive mesh models to allow reconstruction even in the event of packet loss. We use these modifications in two transmission schemes, a hybrid transmission that uses TCP and UDP to send packets and a forward error-correcting transmission scheme that uses redundancy to decode the information sent. We assess the performance of these transmission schemes when deployed on network testbeds that simulate wide-area and wireless characteristics.

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Section: Transfer Of Bulk Datamentioning

confidence: 99%

Hybrid and forward error correction transmission techniques for unreliable transport of 3D geometry

2005

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“…Relevant work includes Saparilla and Ross, 2000;Argiriou and Georgiadis, 2002;Rejaie et al, 1999;Gorinsky and Vin, 2001;Gorinsky et al, 2000;Kar et al, 2000;B.Vickers et al, 2000. The work in Saparilla and Ross, 2000 investigates optimal policies to dynamically adapt the fraction of the available bandwidth given to a base and enhancement layer.…”

Section: Multimediamentioning

confidence: 99%

“…Their approach doesn't seem to permit an investigation of optimal adaptation policies, which is a major focus of our work. A different tack on the problem is taken in Rejaie et al, 1999 which proposes a TCP-friendly congestion control scheme for rate adaptive video which makes smart use of buffering to absorb short time scale congestion. This paper also takes a client-centric view.…”

Section: Multimediamentioning

confidence: 99%

Asymptotic Analysis of Rate Adaptive Multimedia Streams

Weber

Veciana

2003

Operations Research/Computer Science Interfaces Series

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We investigate dynamic adaptation policies for rate adaptive multimedia streams in a network where each route traverses at most one bottleneck link. Dynamic adaptation allows clients to dynamically adapt the stream subscription level, i.e., time-average stream rate, in response to changes in available link capacity, and allows the system to maintain a lower blocking probability than is possible with non-adaptive streams.We define the quality of service for rate adaptive streams using the metrics of time-average subscription level, rate of adaptation, i.e., change in subscription level, and blocking probability. We investigate two baseline policies, namely, fair share adaptation and two rate randomized adaptation, and show that each suffers from significant implementation drawbacks. We then show that the adaptation policy which maximizes the mean subscription level overcomes these drawbacks, although streams with a duration near a critical threshold may experience unacceptably high rates of adaptation. This motivates the investigation of admission policies for rate adaptive streams where a stream is given a static subscription level at the time of admission which it maintains throughout its lifetime. We identify the asymptotically optimal admission policy for rate adaptive streams and show that it achieves an expected subscription level equal to that under the optimal dynamic adaptation policy. We also show that it maintains the asymptotic zero blocking property achievable using dynamic rate adaptation but does not incur the implementation overhead and QoS drawbacks of dynamic rate adaptation. The conclusion is that near optimal QoS can be obtained using a simple admission policy which gives the maximum subscription level to short duration streams and the minimum subscription level to long duration streams.

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“…TCP is used to approximate a real-time adaptive multi-rate source [11] [12] [13]. Audio and video protocols are typically based on UDP, RTP and RTCP.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…Audio and video protocols are typically based on UDP, RTP and RTCP. Recent realtime multimedia protocols respond to loss by adjusting their rate, and are thus in principle similar to TCP [11] [13]. Although their transient behaviour, and amount of response to loss is different than TCP, any real-time protocol that seeks to take advantage of available capacity on a best effort network, must in principle be congestion controlled.…”

Section: Performance Evaluationmentioning

confidence: 99%