Patent ID: 7940659

Claim:
A method for guaranteeing into a bearer layer requirements on quality of service negotiated through a signalling layer, the bearer layer being a media transport layer capable of bearing several service data flows, each service data flow including at least one IP flow, the signalling layer being used for signalling how media transported through the bearer layer should be treated, the method comprising the steps of: a user equipment negotiating with the signalling layer those requirements on quality of service to be guaranteed for media transport through the bearer layer; setting a session identifier along with a description of negotiated media to identify the session between signalling and bearer layers; transmitting the media through the bearer layer; installing Quality of Service related rules, the rules including service data flow filters and lists of events to be notified per service data flow; inspecting IP flows through the media at the bearer layer by using the service data flow filters; detecting at the bearer layer when an event to be notified per service data flow occurs for the inspected IP flows; and notifying towards the signalling layer about the detected event related to the particular service data flow.