New Performance Measure and Overload Control for Switching Systems with Focused Traffic

Shinichi NAKAGAWA  Shuichi SUMITA  

IEICE TRANSACTIONS on Communications   Vol.E80-B   No.2   pp.339-344
Publication Date: 1997/02/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Switching and Communication Processing
switching system,  overload control,  congestion control,  performance specification,  focused traffic,  ISDN traffic,  GOS,  

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Narrow-band ISDN services may experience nonstationary traffic conditions. Therefore, switch design should take account of these conditions. We propose new performance measures for switching systems and describe a traffic model, which is a mixture of stationary Poissonian traffic and momentarily focused traffic. On the basis of this model, performance measures are determined so as to satisfy grade of service requirements that are in effect during some short interval after the momentarily focused traffic enters the system. We also propose an overload control scheme that uses these new performance measures. Finally, we show practical and numerical examples for the performance measures and overload control scheme.