Dimensioning and designing broadband networks are big challenges for a network operator. Considering the functionality accompanying ATM-based networks, there is a necessity of having network planning procedures being able to exploit the advantages provided by ATM. One of the benefits is potential use of Virtual Paths, which then could ompose a set of logical networks within the physical network. this paper presents algorithms for dimensioning broadband networks and for designing VP networks. The algorithms are based on a decomposition approach, where the locations are examined one by one. therefore, more comprehensive relationships than found in most of the design algorithms using global optimisation could be applied. Due to the modularity further enhancements could be used within the algorithms with respect to, for instance, network element functionality, traffic handling principles, cost model, network design objectives and traffic approximations.
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