NDLI: Mathematical model and heuristic strategy for SDH meshed networks dimensioning

Content Provider	IEEE Xplore Digital Library
Author	Sousa Filho, A.O. Tavares, H.
Copyright Year	1998
Description	Author affiliation: CPqD-Telebras, Campinas, Brazil (Sousa Filho, A.O.)
Abstract	This paper concerns optimized dimensioning of SDH meshed networks with line restoration. A mathematical model of the network is presented with the purpose of minimizing the total cost of STM-N systems between nodes. The model jointly determines the routing of the working traffic and the spare capacity allocation required for the full restoration of the demand affected by any single link failure at a time. Some practical features have been included, such as flow integrality between network nodes, STM-N modularity and the possibility to superpose two hierarchical level systems in the links. The problem is solved using integer linear programming techniques. Since the execution time depends greatly on the number of integer variables that grow exponentially according to the size of the network, a heuristic has been developed that relaxes integer variables and, after iterative rounding off procedures, obtains the solution integrality. Practical applications are presented which allow the heuristic evaluation.
Starting Page	341
Ending Page	346
File Size	615340
Page Count	6
File Format	PDF
ISBN	0780350308
DOI	10.1109/ITS.1998.713143
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-08-09
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mathematical model Telecommunication traffic Synchronous digital hierarchy Routing Protection Electronic mail Costs Integer linear programming Optical fiber networks Communication cables
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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