Fast and accurate clock recovery in packet switched networks

Abstract

Real-time periodic transmission across packet switched networks requires clock recovery at the destination. The stochastic nature of packet traffic makes clock recovery difficult. A new packet network clock recovery algorithm is proposed for fast and accurate synchronization. The algorithm has the ability to filter out buffer level fluctuations efficiently and remove the negative contribution of delay jitter in clock recovery. As compared with existing algorithms, the new algorithm enables the destination clock to be synchronized with the source more quickly and more accurately.