A case for tree evolution in QoS multicasting

The phenomenal growth of group communications and QoS-aware applications over the Internet have accelerated the development of multicasting technologies. The Core-Based Tree (CBT) multicasting approach provides a scalable solution for large groups for large networks such as the Internet. However, unlike in shortest-path trees, the quality (tree cost) of the CBT may eventually degrade over time due to group dynamics (join/leave). In order to counteract this degradation, the core may be migrated and a new tree constructed. The method of migrating group members from the old core to the new core has a profound impact on the quality of the tree and also on the service disruption experienced by group members. Thus, there exists a trade-off between tree cost and service disruption as higher rate of migration decreases the overall tree cost but results in more service disruption. In [1], we developed the concept of tree migration. In this paper, we develop a new paradigm for tree migration, na...

• Type: Journal
• Year: 2006
• Where: COMCOM
• Authors: Anirban Chakrabarti, G. Manimaran
• Keywords: COMCOM 2006, Service Disruption, Tree, Tree Cost