Partial versus early packet video discard

In this paper, we propose and compare two video slice-based discard schemes, namely adaptive-PSD and adaptive-ESD, for the transmission of MPEG video streams over ATM best effort services. The schemes perform adaptive and selective cell burst discard at the level of MPEG video slices and intelligently adjust drop policies to switch buffer occupancy and video cell payload types. In comparison to previous approaches, the performance evaluation has shown a significant reduction of the bad throughput crossing the network and a better protection of critical intra- and predictive-coded pictures at both cell and video slice levels