NDLI: An optimal spare-capacity assignment model for survivable networks with hop limits

Content Provider	IEEE Xplore Digital Library
Author	Herzberg, M. Bye, S.J.
Copyright Year	1994
Description	Author affiliation: Telecom Australia Res. Labs., Clayton, Vic., Australia (Herzberg, M.; Bye, S.J.)
Abstract	The paper presents a new algorithm for spare-capacity assignment in survivable networks which use cross-connect systems as transmission hubs. The algorithm minimises total cost of spare capacity for required levels of network restoration following a single link failure (e.g. fibre cut) and limits the restoration routes to any predetermined hop limit. The algorithm is composed of two parts: Part 1 relies on a linear programming (LP) formulation (min-max) from which a lower bound solution is found; Part 2 rounds up the solution of Part 1 and uses a series of related LP schemes (max-flow), aimed at tightening the rounded-up assignment to a practical optimal solution which also supplies optimal restoration routes and capacities. For moderate networks an integer programming formulation of Part 1 can be used to obtain an optimal solution. A network example is analysed to illustrate the algorithm developed and to demonstrate its superiority over other schemes published in this area. In addition, a valuable trade-off between spare capacity and hop limit is presented.
Starting Page	1601
Ending Page	1606
File Size	564876
Page Count	6
File Format	PDF
ISBN	078031820X
DOI	10.1109/GLOCOM.1994.513045
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-11-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Australia Add-drop multiplexers Costs Linear programming SONET Telecommunications Laboratories Algorithm design and analysis Synchronous digital hierarchy Automatic control
Content Type	Text
Resource Type	Article

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