Proceedings ArticleDOI
Motion video coding for packet-switching networks: an integrated approach
Michael Gilge,Riccardo Gusella +1 more
- Vol. 1605, pp 592-603
TLDR
By integrating network-control into the image data compressional algorithm, the strong interactions between the coder and the network can be exploited and the available network bandwidth can be used best.Abstract:
The advantages of packet video, constant image quality, service integration and statistical multiplexing, areovershadowed by packet loss, delay and jitter. By integrating network-control into the image data compressionalgorithm, the strong interactions between the coder and the network can be exploited and the available network bandwidth can be used best . In order to enable video transmission over today's networks without reservation orpriorities and in the presence of high packet loss rates, congestion avoidance techniques need to be employed. This isachieved through rate and flow control, where feedback from the network is used to adapt coding parameters and varythe output rate. From the coding point of view the network is seen as data buffer. Analogously to constant bit rateapplications, where a controller measures buffer fullness, we attempt to avoid network congestion (eq. buffer overflow)by monitoring the network and adapting the coding parameters in real-time. 1. INTRODUCTIONread more
Citations
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Proceedings ArticleDOI
Receiver-driven layered multicast
TL;DR: The RLM protocol is described, its performance is evaluated with a preliminary simulation study that characterizes user-perceived quality by assessing loss rates over multiple time scales, and the implementation of a software-based Internet video codec is discussed.
Proceedings ArticleDOI
Scalable feedback control for multicast video distribution in the Internet
TL;DR: The mechanism uses a novel probing mechanism to solicit feedback information in a scalable manner and to estimate the number of receivers and separates the congestion signal from the congestion control algorithm, so as to cope with heterogeneous networks.
Proceedings ArticleDOI
A measurement-based admission control algorithm for integrated services packet networks
TL;DR: This paper describes a measurement-based admission control algorithm for predictive service, which allows occasional delay violations and suggests that this approach combined with the relaxed service commitment of predictive service enables this paper to achieve a high level of network utilization while still reliably meeting the delay bound.
Proceedings ArticleDOI
An adaptive congestion control scheme for real-time packet video transport
TL;DR: Modulating the source rate of a video encoder based on feedback information from the network results in graceful degradation in picture quality during periods of congestion, and it is believed that the use of such schemes will simplify the architecture used for supporting real-time services in future nationwide gigabit networks.
Proceedings ArticleDOI
A rate control mechanism for packet video in the Internet
TL;DR: Experiments indicate that the control mechanism is well suited to the Internet environment, and makes it possible to establish and maintain quality videoconferences even across congested connections in the Internet.
References
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Journal ArticleDOI
Congestion avoidance and control
TL;DR: The measurements and the reports of beta testers suggest that the final product is fairly good at dealing with congested conditions on the Internet, and an algorithm recently developed by Phil Karn of Bell Communications Research is described in a soon-to-be-published RFC.
Journal ArticleDOI
A scheme for real-time channel establishment in wide-area networks
Domenico Ferrari,Dinesh C. Verma +1 more
TL;DR: The results are judged encouraging: the approach satisfies the guarantees even in worst case situations, uses the network's resources to a fair extent, and efficiently handles channels with a variety of offered load and burstiness characteristics.
Journal ArticleDOI
Performance models of statistical multiplexing in packet video communications
TL;DR: This demonstrates that statistical or asynchronous time-division multiplexing (TDM) can efficiently absorb temporal variations of the bit rate of individual sources without the significant variations in reception quality exhibited by multimode videocoders for synchronous TDM or circuit-switched transmission.
Proceedings ArticleDOI
A control-theoretic approach to flow control
TL;DR: A control-theoretic approach to reactive flow control in networks that do not reserve bandwidth is presented, and a technique to extract and use additional information from the system to develop a continuous-time system model is presented.
Journal ArticleDOI
Flow Control: A Comparative Survey
Mario Gerla,Leonard Kleinrock +1 more
TL;DR: Flow control can be exercised at various levels in a packet network: hop level, entry-to-exit level, network access level, and transport level, where the interaction between the different levels is discussed and the most representative techniques are surveyed and compared.