WDM光网络多播性能分析比较

With unprecedented increasing demands on bandwidth due to explosive growth of traffic in the Internet, wavelength-division multiplexing (WDM) is proved to satisfy this increasing bandwidth demands in the Internet. Multicasting is becoming more and more popular and important in the Internet for applications such as video conferencing, video-on-demand services, HDTV, and so on. WDM technology and multicasting technology make the services to support large bandwidth demands be possible. so it is becoming a research hot point in resent years. This paper will mainly introduce the multicast in optical WDM network at first and then simulate the multicast performance with OWS and OBS technologies. At last, simulation result shows OBS network is better than OWS in terms of NEU, delay and loss rate/blocking under some conditions.