Playout buffering algorithm using of randomwalk in VoIP

Buffer delay is a technique used for getting rid of fitter in IP telephone terminals. This delay is calculated with the variance of transmission delay, but it is hard to measure one-way delay on the Internet. We propose new metric to decide buffer delay as the metric of the variance of packet arriving interval instead of packet delay. We model the problem of late/early packet loss as the randomwalk and buffer delay as the range of walk-field. Finally we introduce the relationship of buffer delay and the probability of occurrence of the late/early packet loss using of the model. Therefore IP telephone terminal can decide the relevant buffer delay of the relationship and the measurement of the variance of packet arriving intervals.