Patent ID: 8214533
Filing Date: 2012-07-03
Classification: H04L

Abstract:
1. A quality assured network service provision system compatible with a multi-domain network, wherein a communication network comprising a plurality of operations management networks (domains) which are connected to a plurality of customer networks with user terminals and which are respectively managed by different providers, the system comprising: a plurality of network service management devices, at least one of the plurality of network service management devices being incorporated within a respective operations management network of each of said providers, and negotiating with another operations management network which is managed by another provider and with which interconnection is to be established based on a required quality level from a customer so as to ensure an end-to-end quality level; and a multi-domain service broker device at a functional upper layer managing and brokering the plurality of network service management devices, the multi-domain service broker device managing bandwidth brokers in the respective domains, receiving service information on services which can be provided by the respective domains and domain information which includes configuration information relating to the operations management networks which are output from the network service management device which belongs to each of the providers, storing information on the operations management networks managed by the respective providers, and brokering a service level agreement between the operations management networks of said plurality of providers by selecting route information and a network service management device for ensuring an end-to-end quality level required by the customer based on the received service information and domain information, wherein the multi-domain service broker device interworks with the bandwidth brokers to assure service level agreements so as to provide a communication service over the domains, and to secure network resources over the domains, the multi-domain service broker device provides information identifying, a bandwidth broker of an adjacent domain that satisfies the required quality level among bandwidth brokers of a plurality of adjacent domains to a bandwidth broker that has initiated a request.