Telefonaktiebolaget Lm Ericsson (publ)

Volker Kleinfeld

Gerasimos Dimitriadis

Klaus Turina

Kurt Essigmann

Magnus Hallenstål

Peng Li

Chunbo Wang

Maria Cruz Bartolome Rodrigo

Mary Amarisa Robison

Sven Steinacker

Martin Blumbach

There is provided a method of operating a Service Communication Proxy, SCP, node () in a communication network as a proxy network repository function, NRF, for a first network function, NF, producer node in the communication network. The first NF producer node () is to migrate from a direct communication mode with a first NF consumer node () to an indirect communication mode with the first NF consumer node () via the SCP node (). The SCP node () discovers a NF profile for the first NF producer node (), wherein the NF profile for the first NF producer node () is stored by a first network repository function, NRF, node (604) in the communication network, and the NF profile comprises a service address for the first NF producer node (); receives a registration request from the first NF producer node (), wherein the registration request is a request to register a NF profile for the first NF producer node () at a NRF node (), wherein the registration request indicates the service address for the first NF producer node (); and, in response to the received registration request, sends an update request to the first NRF node () to update the NF profile for the first NF producer node () stored by the first NRF node () to replace the service address of the first NF producer node () with a first service address of the SCP node () that is associated with the service address of the first NF producer node ().

Migration to indirect communication mode in a service-based architecture

A method performed by a function in a network node in a telecommunications network having at least one service communication proxy, SCP, deployed between a first network node and a second network node. The method includes receiving a request for routing information to signal a message from the first network node to the second network node. The method further includes responsive to the request from the first network node, providing a response to a network node that sent the request wherein the response identifies at least a portion of a routing path for the message based on a routing path configuration.

Routing communication in telecommunications network having multiple service communication proxies

A technique for hiding topological information in a message that leaves a trusted network-domain is presented. The message pertains to a subscriber session and comprises a Fully Qualified Domain Name (FQDN) of a message originator. The originator is located in a first network domain, and the message is directed towards a destination in a second network domain. A method aspect comprises the steps of receiving the message, determining the FQDN comprised in the message and determining an identifier associated with the message. The identifier comprises at least one of a subscriber identifier, a session identifier and a destination identifier. Further, the method comprises applying a cryptographic operation on the FQDN and the identifier, or on information derived therefrom, to generate a cryptographic value. The message is then processed by substituting at least a portion of the FQDN with the cryptographic value prior to forwarding the message towards the second network domain.

Message processing for subscriber sessions which stretch over different network domains

A system, method, node and computer program for allocating a user equipment, UE, () roaming in a visited network (), to a dedicated core network, DCN, () out of a plurality of DCN () available in the visited network (), is provided. The method comprises receiving a trigger comprising a DCN-type indicator from a home network () of the roaming UE (), and determining, responsive to the reception of the DCN-type indicator, whether an DCN-type indicated by the received DCN-type indicator is supported by the visited network (). The method further comprises determining, if the DCN-type is not supported by the visited network (), an alternative DCN-type supported by the visited network () and allocating, by the visited network (), the roaming UE () to a DCN () of the alternative DCN-type.

Core network allocation handling

The invention relates to a method, by a diameter routing unit (), to route diameter commands of a data packet session using a diameter protocol in a mobile communications network, the diameter routing unit comprising a storage unit () storing information which policy and charging control unit is handling which data packet session and storing information about a presence of at least one additional diameter routing unit () which routes diameter commands of the diameter protocol to the same pool of policy and charging control units () as the diameter routing unit. The method comprises the steps of receiving a diameter command for a data packet session; checking whether information is present in the storage unit () which policy and charging control unit is handling the session to which the received diameter command belongs, wherein, if information is present in the storage unit (), the received diameter command is forwarded to one of the policy and charging control units () in accordance with the stored information, wherein, if no information can be found in the storage unit () for the received diameter command, the diameter command is forwarded to the at least one additional diameter routing unit.

Re-routing of diameter commands

A network node for a telecommunication network is provided. The network node includes a receiving unit adapted to receive a monitoring control message. The monitoring control message includes an identifier relating to a subscriber whose communication is to be monitored. A processing unit is adapted to determine one or more filter parameters for filtering communication relating to the subscriber based on the received monitoring control message. The network node also includes a sending unit adapted to send a filter parameter message indicative of the determined one or more filter parameters to a monitoring node separate from the network node for filtering of the communication relating to the subscriber in accordance with the one or more filter parameters.

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Aachen, Germany

Volker Kleinfeld