摘要
层代表的确定是层内分层组播的关键。提出了层代表当选概率公式。当前反馈者能否当选为层代表,不仅取决于个体的反馈速率同当前层速率的相对差值,更取决于层内成员的速率粗略分布。引入了层代表速率下降阈值和挂起策略,缓解了层代表速率急剧降落时对层发送速率带来的负面影响。仿真实验表明,基于层内代表当选概率的分层组播可以满足层内大多数接收成员的速率需求。
The formula for layer delegate election is proposed. The threshold values of delegate's drop rate and suspension strategy are introduced to release the negative effect ofdrop rate on the rate of layer sending. Simulation results show that synthetic probability based layered multicast (SBLM) can meet most of receivers' demand within a layer group.
出处
《华北电力大学学报(自然科学版)》
CAS
北大核心
2006年第3期73-76,共4页
Journal of North China Electric Power University:Natural Science Edition
关键词
分层组播
多速率组播
组播
layered multicast
multirate multicast
multicast