Analytical Study of Delay and Jitter for VBR Media Streaming Based on the Wavelet Model
Jin Yong · 2008
Real-time media streaming has seen increased demand on the Internet in recent years,and has drawn tremendous attention from both academia and industry.Multimedia applications in real time have rigid requirements on bandwidth,delay and jitter,and especially identify significant challenges for providing QoS guarantees in lossy networks.This paper presents an analytical study of the delay and jitter for real-time media streaming using the wavelet model for VBR streams.On this basis,a series of Matlab simulation experiments are designed and conducted,and the results are qualitatively analyzed and investigated.Our study shows that the delay and jitter of the video traffic increase as the buffer size is increased,in case of fixed service rate of the nodes.However,they tend to be stable when the buffer size increases to a certain degree.In addition,we find that,with the increasing of the sending rate,the delay and jitter decrease sharply when the buffer is fixed.We believe that this work could contribute in understanding the characteristics of real-time video traffic and transmission process of VBR streams,in performance improvement of multimedia networks as well.