Stability of video rate control algorithms over bandwidth-limited network paths

Abstract

The paper considers the stability of AIMD-based rate adaptation algorithm for video transmission over a bandwidth-limited network path. We examine the stability aspects from two angles: first, a quick relief from congestion by a faster reduction of send rate, and second, a larger limit-cycle time with a slow rate reduction in the steady-state (and hence lower rate jitter). The stability assessment also considers the loss of feedback signals from the video receiver that indicate the packet loss on data channels. We provide a management-oriented assessment of the convergence properties of video rate control system. This in turn allows an autonomic adjustment of the AIMD parameters and the system controller models for optimal performance.