【摘要】 软实时业务对业务传送的实时性并不要求绝对的延时上界保证,因此通常不需要基于最坏的情况进行接纳控制。文章针对软实时业务的业务特性提出了一种新型的基于测量的接纳控制方法,该方法首先通过对网络流量进行实时测量来估计流量的统计特性,然后结合软实时业务的实时性指标进行接纳控制。仿真结果表明,提出的接纳控制方法不仅有效地提高了带宽利用率,而且在带宽利用率与业务实时性指标之间建立了显式关联,因此可以更加灵活有效地为软实时业务提供服务质量保证。更多还原

【Abstract】 Soft real-time applications are tolerant of occasional delay bound violations and do not need an absolutely reliable bound,so worst-case based admission control is not necessary for these tolerant applications.This paper proposes a new measurement-based admission control(MBAC)algorithm for soft real-time applications.The MBAC first estimates the statistical characters of network traffic,and then makes admission control decision combined with quality of service parameters.Simulation result shows that our algorithm can effectively improve network utilization and map quality of service target to network utilization straightly.更多还原