Patent ID: 8320237
Filing Date: 2012-11-27
Classification: H04L

Abstract:
1. A method for minimizing bandwidth allocation for alternative routes within a telecommunication network, comprising the steps of: providing a management system for managing routes of services within said network; providing a plurality of guaranteed bandwidth services, hereafter referred as GBW-services; assigning to each GBW-service a traffic class, hereafter referred as TC; calculating for each GBW-service belonging to a protected TC an active route and at least one alternative route, the active route being a planned route in case of absence of a respective network failure and the alternative route being the route which guarantees that, in case of a network failure with respect to the active route, said GBW-service is protected elsewhere by protecting the respective network resources; providing a first optimized protection mode to be assigned to all the GBW-services belonging to a given protected TC, the first optimized protection mode including a first optimization step including the step of reserving bandwidth for each GBW-service only once for each network resource employed by the active and/or the alternative route of each GBW-service; providing a second optimized protection mode including a second optimization step including the step of reserving, for each network resource, an absolute minimum bandwidth to ensure protection and bandwidth guarantee for all GBW-services for any single network failure; and providing a protection mode, to be assigned to all the GBW-services belonging to a given protected TC, said protection mode including the step of reserving bandwidth for each network resource employed by the GBW-service active-route and the step of configuring, without reserving bandwidth, the network resources employed by the GBW-service alternative-routes.