Application-Assisted Adaptation of Real-Time Streams over Wireless Links
Margaritis Margaritidis, George C. Polyzos · 1999
We introduce MobiWeb, a new proxy-based network architecture that enhances the performance of adaptive real-time streams over wireless Internet links. MobiWeb includes a priority scheme that preserves media smoothness despite short-term fluctuations of the link, as well as a filterbased scheme to adapt to long-term link changes. The two schemes are shielded from each other with the use of two timers which permit the continuous exploration of the link resources, increasing the utilization of resources when they are abundant, while forcing enhanced streams to back-off to more moderate resource usage when resources are scarce. MobiWeb uses admission control for real-time traffic in order to provide a base level of quality, while remaining fair and transparent to unaware, best-effort traffic.