摘要： (中南大学信息科学与工程学院，长沙 410083)

关键词: 应用层组播, 可用带宽, 备用父节点

Abstract: In Application Layer Multicast(ALM), if none-leaf nodes leave or fail, all of this node’s download nodes will be greatly affected. On this issue, this paper proposes a new proactive approach to restore overlay multicast, and each non-leaf node precalculates a parent-to-be for each of its children. So that the non-leaf node fails or leaves, the children nodes can accept data quickly from parent-to-be. Simulation experiment demonstrates the proactive approach can recover from node departures about 3 times faster than reactive approach, and average delivery delay is smaller than other proactive approaches with low overheads.

Key words: Application Layer Multicast(ALM), available bandwidth, parent-to-be

中图分类号: 

• TP393