Patent ID: 7319691

Claim:
A method for providing guaranteed Quality of Services (QoS) in an IP network, comprising: configuring a service bearer logic network layer from a basic network layer for a service type for bearing traffic streams with guaranteed QoS requirements; after receiving a service request with guaranteed QoS requirement from a subscriber, obtaining, by a service control layer, addresses of a source subscriber and a destination subscriber and QoS parameters of the service through analyzing the service request, and sending a route selection and resource application request to a bearer control layer; allocating, by a bearer network resource manager in the bearer control layer, resources and route from the source subscriber to the destination subscriber which comprises multiple Label Switched Paths for the service in the service bearer logic network of this service type according to the addresses of the source subscriber and the destination subscriber, generating a multi-level label stack for the resources and route, and informing the multi-level label stack to the service bearer logic network; and forwarding traffic streams in the service bearer logic network according to labels configured in the multi-level label stack generated by the bearer network resource manager in the bearer control layer.