Channel condition arq rate control for real-time wireless video under buffer constraints

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations


Many emerging applications involve real-time packet video transmission over noisy wireless networks. To ensure reliable video transmission, an Automatic Repeat reQuest (ARQ) scheme is used for repairing packet loss over a channel by retransmitting corrupted packets. However, an ARQ resolves the problem of packet loss at the expense of varying an effective channel rate as well as introducing extra latency. These properties increase difficulty on rate control for real-time wireless video when the buffer overflow and underflow are taken into account. Therefore, we propose a novel ARQ-based rate control scheme, called "channel condition ARQ rate control" by using embedded coding to design an efficient retransmission policy for wireless video. This scheme achieves both maximal channel utilization and smooth video quality perceived at an end-host, which has low implementation complexity under buffer constraints. We have conducted extensive simulations to verify the efficiency and robustness of the proposed scheme.

Original languageEnglish (US)
Title of host publicationIEEE International Conference on Image Processing
Number of pages4
StatePublished - Dec 1 2000
EventInternational Conference on Image Processing (ICIP 2000) - Vancouver, BC, Canada
Duration: Sep 10 2000Sep 13 2000


OtherInternational Conference on Image Processing (ICIP 2000)
CityVancouver, BC


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