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    • 4. 发明授权
    • OPTIMIZED BANDWIDTH ALLOCATION FOR GUARANTEED BANDWIDTH SERVICES
    • 最佳BANDBREITENZUTEILUNGFÜRDIENSTE MIT GARANTIERTER BANDBREITE
    • EP1927218B1
    • 2012-05-23
    • EP06776986.9
    • 2006-08-21
    • Nokia Siemens Networks GmbH & Co. KG
    • FRANTZ, MichaelFILIPE, JoaoKLEIN, Stefan
    • H04L12/56
    • H04L45/00H04L41/00H04L41/0663H04L41/0896H04L45/22H04L45/28H04L47/15H04L47/24H04L47/70H04L47/728H04L47/746H04L47/829
    • It is the aim of the present invention to provide a method and a system for reducing to the minimum the network bandwidth allocation for the protected routes of GBW-services. This aims are achieved by a method and a system for minimizing bandwidth allocation for alternative routes within a network, comprising the steps of: a) providing a management system for managing the routes of services within said network; b) providing a plurality of guaranteed bandwidth services, hereafter referred as GBW-services; c) assigning to each GBW-service a traffic class, hereafter referred as TC; d) calculating for each GBW-service belonging to a protected TC an active route and at least one alternative route; the active route being the 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; e) providing a first optimized protection mode to be assigned to all the GBW-services belonging to a given protected TC; said first optimized protection mode comprising 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.
    • 因此,本发明的目的是提供一种用于将GBW服务的受保护路由的网络带宽分配降至最低的方法和系统。 该目的通过一种用于最小化网络内替代路由的带宽分配的方法和系统来实现,包括以下步骤:a)提供用于管理所述网络内的服务路由的管理系统; b)提供多个保证带宽服务,以下简称GBW服务; c)为每个GBW服务分配流量类,以下称为TC; d)计算属于受保护的TC的每个GBW服务活动路线和至少一个替代路线; 在没有相应网络故障的情况下,活动路由是计划路由,替代路由是保证在相对于主动路由发生网络故障的情况下,所述GBW服务在其他地方受到保护, 各网络资源; e)提供要分配给属于给定受保护的TC的所有GBW服务的第一优化保护模式; 所述第一优化保护模式包括第一优化步骤,包括为每个GBW服务的活动和/或替代路由所采用的每个网络资源仅为每个GBW服务预留一次带宽的步骤。