Patent ID: 7801032

Claim:
A system of dynamic QoS negotiation in a Next Generation Network (NGN), comprising a Resource and Admission Control Subsystem (RACS), a Transport Functional (TF) entity, a Service Control Functional (SCF) entity and a Network Attachment Subsystem (NASS), wherein: the RACS has interfaces with the TF entity, the SCF entity and the NASS; the SCF entity, configured to receive a service request from a user terminal, when the service request does not carry QoS requirement parameters of a service of the user terminal, determining, by the SCF entity, a service type in accordance with the service request, and determining the QoS requirement parameters required for the service in accordance with the service type; when the service request carries the QoS requirement parameters of the service, obtaining, by the SCF entity, the QoS requirement parameters of the service by parsing the service request; the RACS, configured to process a resource reservation request required for the service of the user terminal and obtain QoS requirement parameters required by the service from the resource reservation request, perform authentication and determine admission control decision parameters based on the QoS requirement parameters in accordance with operation policy rules, a user profile stored in the NASS and availability of transport network resources, and send the admission control decision parameters to a concerned TF entity for execution; the TF entity, configured to ensure QoS of the service of the user terminal according to the admission control decision parameters; wherein when the user terminal is a mobile terminal, the SCF entity sends a resource authentication request containing the QoS requirement parameters of the service to the RACS via a corresponding interface with the RACS, the RACS notifies the user terminal via the SCF entity after authenticating successfully, and the user terminal initiates a resource reservation request to the TF entity of the network via a path-coupling QoS signaling carrying the QoS requirement parameters of the service; handling by the TF entity at a network boundary the QoS signaling and sending a resource reservation request containing the QoS requirement parameters of the service to the RACS via a corresponding interface with the RACS; and wherein when a token mechanism is used, the RACS returns an admission token to the user terminal via the SCF entity after authenticating successfully and checks whether a resource reservation request has passed the authentication and searches for relevant information of the service in accordance with the admission token, and wherein the admission token is carried in a path-coupling QoS signaling and transferring the admission token to the RACS via the resource reservation request.