Telefonaktiebolaget Lm Ericsson (publ)

David Castellanos

Hubert Przybysz

Fredrik Lindholm

Susana Fernandez Alonso

John Michael Walker

The invention relates to a method of notifying an Application Function, AF, in a communications network of resource restrictions relating to a communications session. The network includes a Policy and Charging Rules Function, PCRF, for authorising and controlling flows of data in the session. In the method the AF sends an authorisation request to the PCRF for establishing the communication session. The authorisation request includes an indication that the AF is to be notified of resource restrictions for the data flows in the session. The PCRF notifies the AF of the resource restrictions.

Notification of resource restrictions in a multimedia communications network

The invention relates to a method of notifying an Application Function (AF) in a communications network of resource restrictions relating to a communication session. The network includes a Policy and Charging Rules Function (PCRF) for authorizing and controlling flows of data in the session. In the method the AF sends an authorization request to the PCRF for establishing the communication session. The authorization request includes an indication that the AF is to be notified of resource restrictions for the data flows in the session. The PCRF notifies the AF of the resource restrictions.

Methods and apparatuses for notifying an application function of resource restrictions relating to a communication session

The invention relates to a method of notifying an Application Function (AF) in a communications network of resource restrictions relating to a communication session. The network includes a Policy and Charging Rules Function (PCRF) for authorising and controlling flows of data in the session. In the method the AF sends an authorisation request to the PCRF for establishing the communication session. The authorisation request includes an indication that the AF is to be notified of resource restrictions for the data flows in the session. The PCRF notifies the AF of the resource restrictions.

A method and telecommunication node for authenticating with an IP Multimedia Subsystem (IMS) network, a nomadic user in an access network. The node receives from the access network, an access identifier defining a mobile terminal's physical location. In response, the node retrieves from a database, a registered access identifier associated with the user and determines whether the received identifier matches the registered identifier. If the identifiers match, the node authenticates the user in the IMS network. If the identifiers do not match, the node performs an alternate authentication method.

Authentication in an IP multimedia subsystem network where an in-use line identifier (LID) does not match a registered LID

A method and network node for terminating an IP Multimedia Subsystem (IMS)-enabled communication service involving a user terminal, which has been allocated an IP address by an access network used by the terminal to access the communication service. Upon determining that the IP address is no longer allocated to the user by the access network, the node terminates the IMS communication service.

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Madrid, Spain

David Castellanos