A Column-Generation and Branch-and-Cut Approach to the Bandwidth-Packing Problem
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چکیده
The bandwidth-packing problem is a combinatorial optimization problem arising from telecommunication networks where demand exceeds capacity and where point-to-point calls with varying bandwidths are routed on this network such that each call uses a single path. These problems occur within ATM technology and when video data is routed. It belongs to the broad class of multi-commodity flow problems that are commonly associated with communication, computer, transportation, and distribution network applications. Calls between pairs of nodes define the commodities, and links connecting nodes represent transmission lines in the telecomm network. Given a set of calls with their revenue and bandwidth requirements and an undirected network with its fixed arc/link capacities and costs, the problem is to assign calls from a request table to paths such that network capacities are not violated and profit is maximized. When one can split a call among a variety of paths, then the problem can be solved by linear programming techniques. However, there are many telecommunications problems (as well as applications outVolume 111, Number 2, March-April 2006 Journal of Research of the National Institute of Standards and Technology
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تاریخ انتشار 2006