DocumentCode :
2282546
Title :
A model-based foundation for evaluating large scale telecommunications systems
Author :
Obal, W. Douglas, II ; Sanders, William H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA
fYear :
1993
fDate :
23-26 Mar 1993
Firstpage :
367
Lastpage :
369
Abstract :
UltraSAN based on stochastic activity networks (SANs), provides a sophisticated model-based environment for evaluating large-scale telecommunications systems. When modeling telecommunications systems, one must often contend with performance measures based on rare events. Such performance measures pose a difficult problem for traditional model solution techniques. In particular, performance measures based on rare events lead to stiff systems that are difficult to solve analytically. Traditional simulation techniques can take a very long time to collect a statistically significant sample of a performance variable based of a rare event. The efficiency of simulation-based evaluations of such measures can be improved by using a variance reduction technique called importance sampling. The authors discuss the UltraSAN software and a general framework developed for the application of importance sampling to SANs within the UltraSAN environment
Keywords :
performance evaluation; programming environments; software tools; stochastic processes; telecommunication computing; UltraSAN; importance sampling; large scale telecommunications systems; model-based foundation; performance measures; rare event; simulation techniques; sophisticated model-based environment; stiff systems; stochastic activity networks; Application software; Large-scale systems; Monte Carlo methods; Petri nets; State-space methods; Stochastic processes; Stochastic systems; Storage area networks; Switches; Telecommunication switching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computers and Communications, 1993., Twelfth Annual International Phoenix Conference on
Conference_Location :
Tempe, AZ
Print_ISBN :
0-7803-0922-7
Type :
conf
DOI :
10.1109/PCCC.1993.344502
Filename :
344502
Link To Document :
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