Patent ID: 8036635

Claim:
A system for providing a service in a communication system, comprising: a service server for, upon receipt from a Mobile Station (MS) of a request for a provisioning of a service with a requested Quality of Service (QoS) class, transmitting a QoS information request message to an interface server and, upon receipt from the interface server of a QoS information response message for the QoS information request message, providing to the MS the service with the requested QoS class, wherein when the service server determines to terminate the service with the requested QoS class, the service server transmits to the interface server a service termination request message requesting deletion of a recording of the QoS class, and the interface server for receiving from a service server information about a Quality of Service (QoS) class requested for the service by a Mobile Station (MS), acquiring information indicating support of the requested QoS class, and providing the QoS support information to the service server, wherein when the interface server determines to change the QoS class of the service after providing the QoS support information to the service server, the interface server determines whether a valid period of the supported QoS class has expired or an allocated amount of traffic has been exceeded, wherein if the valid period of the supported QoS class has expired or the allocated amount of traffic has been exceeded, the interface server performs one of transmitting information about a new supported QoS class to the service server and notifying the service server that no further QoS class can be supported.