Technique for enabling signaling message correlation

A method for enabling signaling message correlation in a telecommunication network, the method being performed by a network node operating a central data repository of the telecommunication network, the method comprising:

• receiving a first signaling message as part of a signaling procedure among a plurality of network nodes in the telecommunication network, the first signaling message including a correlation identifier being propagated along a message flow of the signaling procedure, the correlation identifier enabling correlation of signaling messages in the message flow;
• triggering storing the correlation identifier in the central data repository in association with a user equipment associated with the signaling procedure;
• and
• triggering transmitting a second signaling message as part of the signaling procedure, at least one correlation identifier stored in the central data repository in association with the user equipment is incorporated into the second signaling message for further propagation, the correlation identifier stored in the central data repository being carried in an extension field of the respective signaling protocol and the correlation identifier generated by a particular network node among the plurality of network nodes upon receipt of a signaling message without a correlation identifier as part of the signaling procedure, the particular network node being an edge node of the subsystem.

A computing unit for executing a network node enabling signaling message correlation in a telecommunication network, the computing unit comprising at least one processor and at least one memory, the at least one memory containing instructions executable by the at least one processor such that the network node is configured to perform a method for enabling signaling message correlation in a telecommunication network, the method being performed by a network node in the telecommunication network, the method comprising:

• receiving a first signaling message as part of a signaling procedure among a plurality of network nodes in the telecommunication network, the first signaling message being transmitted using a first signaling protocol and including a correlation identifier being propagated along a message flow of the signaling procedure, the correlation identifier enabling correlation of signaling messages in the message flow, the signaling procedure comprising at least one of:
• an attach procedure of a user equipment to the telecommunication network;
• and
• a registration procedure of a user equipment with a subsystem of the telecommunication network;
• and
• triggering transmitting a second signaling message as part of the signaling procedure using a second signaling protocol different from the first signaling protocol, the correlation identifier of the first signaling message being incorporated into the second signaling message for further propagation, the correlation identifier being carried in an extension field of the respective signaling protocol and the correlation identifier generated by a particular network node among the plurality of network nodes upon receipt of a signaling message without a correlation identifier as part of the signaling procedure, the particular network node being an edge node of the subsystem.

A computing unit for executing a network node enabling signaling message correlation in a telecommunication network, the network node operating a central data repository of the telecommunication network, the computing unit comprising at least one processor and at least one memory, the at least one memory containing instructions executable by the at least one processor such that the network node is configured to perform a method for enabling signaling message correlation in a telecommunication network, the method being performed by a network node operating a central data repository of the telecommunication network, the method comprising:

• receiving a first signaling message as part of a signaling procedure among a plurality of network nodes in the telecommunication network, the first signaling message including a correlation identifier being propagated along a message flow of the signaling procedure, the correlation identifier enabling correlation of signaling messages in the message flow;
• triggering storing the correlation identifier in the central data repository in association with a user equipment associated with the signaling procedure;
• and
• triggering transmitting a second signaling message as part of the signaling procedure, at least one correlation identifier stored in the central data repository in association with the user equipment is incorporated into the second signaling message for further propagation, the correlation identifier stored in the central data repository being carried in an extension field of the respective signaling protocol and the correlation identifier generated by a particular network node among the plurality of network nodes upon receipt of a signaling message without a correlation identifier as part of the signaling procedure, the particular network node being an edge node of the subsystem.