Multi-frame packet reservation multiple access using oscillation-scaled histogram-based Markov modelling of video codecs

摘要

A model is proposed for replacing the video codec in networking studies, which is tested for sources with a mean bit-rate in the range of 10 Kb/s to 10 Mb/s. The standard frame sizes investigated are the International Telecommunications Union’s (ITU) 352×288-pixel Common Intermediate Format (CIF), 176×144-pixel Quarter CIF (QCIF), 704×576-pixel 4CIF and 128×96-pixel Sub-QCIF (SQCIF). The proposed 20-state ‘oscillation-scaled’ Markov model was found to represent the relevant video codec characteristics adequately. The performance of this model is then tested in the context of a novel Multi-frame Packet Reservation Multiple Access or MF-PRM A scheme, which is shown in Fig. 17 to outperform conventional PRMA in terms of both its delay and packet dropping performance, reaching throughput values as high as 79%.