Availability optimization of static path-protected WDM networks
نویسندگان
چکیده
We developed a heuristic procedure to optimize WDM networks with reliability as objective function. Optimization experiments have been carried out on a case study network, exploring the trade-off between network cost and reliability.
منابع مشابه
Availability-driven optimal design of shared path protection in WDM networks
Availability, defined as the fraction of time a network service is operative, is a key network service parameter. Dedicated protection increases availability but also the cost. Shared protection instead decreases the cost, but also the availability. In this article, we formulate and solve an integer linear programming (ILP) model for the problem of minimizing the backup resources required by a ...
متن کاملDesign of availability-guaranteed OTN
A design technique for reliable optical transport networks is presented. The network is first dimensioned in order to carry a given set of static protected optical connections, each one routed maximizing its availability. The network can be further optimized by minimizing the number of fibers to be installed, while keeping a control on connection availability, which can remain the same or decre...
متن کاملViable model for diversified path restoration in WDM networks
In this paper we deal with planning and optimization of survivable WDM networks. We investigate routing and planning of working and spare capacity for Wavelength Path and Virtual Wavelength Path networks. Models for recommendation of k diversified paths and diversified path restoration for WDM networks are presented. The results show the dependency of spare capacity cost from number of k recomm...
متن کاملDesign of Static Resilient WDM Mesh Networks with Multiple Heuristic Criteria
We present a heuristic method to optimize the capacity of a WDM mesh network assigning working and protection capacity to a set of static optical-connection requests under the linkdisjoint constraint. The method can be applied to networks supporting either dedicated or shared path-protection. Routing and fiber and wavelength assignment (RFWA) are jointly performed for all the lightpaths with th...
متن کاملDynamic WDM Mesh Network Design with Dynamic Optical Path Protection
A WDM mesh network is planned and designed so that to satisfy all its demands. Each connection has to be protected with the a) dedicated way, b) shared way and c) the benefits of the shared way versus the dedicated way are also showed. The shortest path algorithm is used for all dynamical cases. The network uses wavelength conversion. Keywords-dedicated protection, optical channel layer, shared...
متن کامل