Dynamic resoltuion control of stored video traffic in a wireless LAN

This paper describes an experiment of a temporal resolution control scheme of stored video traffic in a wireless LAN. The scheme switches the resolution between two levels according to the network load. We propose a simple method of detecting network congestion which uses only local information. We have implemented the scheme on a wireless LAN based on ALTAIR and have made performance measurement in terms of throughput and total output time. As a result, we observe that although the scheme does not improve the throughput performance, it is effective in suppressing an increase of the total output time due to the network delays.