Impact of transmission delay on ISDN videotelephony

Dimolitsas, S.; Corcoran, F.L.; Phipps, J.G.

doi:10.1109/glocom.1993.318053

Cited by 6 publications

(2 citation statements)

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“…Utilizing previous work [6], [9], [14], [25], we have devised quality functions for several 1 applications in terms of their net-work delay and the network throughput called the delay quality (Q d ) and throughput quality (Q t ), respectively. Overall application quality is defined as the minimum of these two metrics:…”

Section: Application Quality Metricsmentioning

confidence: 99%

“…The number of flows N = 100, with 99 TCP based FTP bulk transfer flows that are not delay sensitive and so provide the maximum delay hint of 16, and 1 audio conference flow simulated as a TCP-friendly 6 source sending data at a rate of 128 Kbps. The experiment is run for 100 seconds of simulation time, whereupon the delay hint of the audio flow is changed for the next run in order to evaluate the performance of the audio flow over a range of delay hints.…”

Section: A Audio Quality Evaluationmentioning

confidence: 99%

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Traffic sensitive active queue management

Claypool

Kinicki

Kumar

Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies.

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Abstract-Delay sensitive applications, such as voice over IP and network games, often sacrifice throughput for lower delay to obtain better quality. Unfortunately, the Internet does not allow an application to choose the amount of delay or throughput it receives and instead packets from all applications receive the same best-effort service. This paper presents a new QoS mechanism called the Traffic Sensitive Quality of Service controller (TSQ) that provides better delay performance for delay sensitive applications and higher throughput for throughput sensitive applications. Also contributed are quality metrics for some typical Internet applications that can be used by an application to adapt its delay hints and evaluate QoS based on current Internet traffic conditions. Experiments suggest TSQ's benefits to performance along with retention of the current best-effort Internet environment without complicated traffic monitoring or policing.

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Section: Application Quality Metricsmentioning

confidence: 99%

Section: A Audio Quality Evaluationmentioning

confidence: 99%