Queue Management of RIO to Achieve High Throughput and Low Delay

Yoshiaki HORI  Takeshi IKENAGA  Yuji OIE  

IEICE TRANSACTIONS on Communications   Vol.E85-B    No.1    pp.63-69
Publication Date: 2002/01/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Internet Technology II -- Traffic Control and Performance Evaluation in the Internet)
differentiated services,  AF-PHB,  RIO,  EWMA,  

Full Text: PDF(682.3KB)>>
Buy this Article

We have focused on the RIO queueing mechanism in statistical bandwidth allocation service, which uses AF-PHB. We have studied the parameterization of RIO to achieve both high throughput and low delay. We were able to parameterize RIO for that purpose in terms of both minth and maxp used in dropping OUT packets. Furthermore, we have also examined the parameterization regarding EWMA (Exponential Weighted Moving Average), i.e., weight factor wqout, and have shown that dropping OUT packets should depend upon the queue length without much delay unlike in RED. From our simulation results, we could see that our parameterization provided high throughput performance and also limited the queue length in a narrow range more effectively.