摘要
将主动网络的思想引入可靠组播差错控制,提出由主动节点负责差错检测和报告;结合已有的“NACK汇聚”策略,设计了在主动节点上的“NACK抑制”策略,从而大大减少了NACK消息的数目.基于上述两点,设计了一个新的主动可靠组播协议ADERM.实验证明ADERM协议很好地控制了带宽占用和恢复延迟,具有良好的可扩展性.
Active network is introduced to reliable multicast error control. A new active reliable multicast error recovery protocol, named ADERM is designed. ADERM differs from other protocols in two aspects: firstly, an active node in ADERM deals with not only retransmission, but also error check; secondly, an active node implements both NACK aggregation and NACK suppression. Experiments show that ADERM consumes less bandwidth and endures less latency.
关键词
可靠组播
主动网络
本地恢复
反馈控制
reliable multicast
active network
local recovery
feedback control
