Jeong Ju Yoo

Advanced multicast service scheduling mechanism with IGMP snooping in WDM-PON

In this paper, we deal with the multicast service management to efficiently support the broadcasting TV and the near real time high quality VoD (video on demand) service though the data communication networks. This is an emerging issue of the next generation network. Until now, several network architectures have been proposed but most of these have been concentrated on increase of the basic network bandwidth or induced the higher system complexity. The hybrid WDM-PON guarantees both kinds of traffic the independent and stable service by introducing the shared broadcast wavelength for multicast group traffic service. The proposed dynamic multicast group scheduling (DMGS) based on hybrid WDM-PON efficiently supports the common Internet traffic as well as the large number of multicast groups by maximizing the service share-index of registered multicast groups which uses the broadcast wavelength in real time

Performance enhancement of differentiated services in E PON: smaller buffer and efficient traffic service isolation

The performances of differentiated services in E-PON can be enhanced by the QoS based bandwidth reservation. With dynamic service tracking, the data buffer size and the light-load penalty are reduced with the reliable traffic isolation