Patent ID: 9277047
Filing Date: 2016-03-01
CPC Classification: H04M,H04W

Claim Text:
1. A method of operating a Mobility Management Entity, MME, within a communication network comprising a radio access network and a core network connected to the radio access network, wherein the radio access network comprises a plurality of base stations wirelessly connected to a plurality of mobile user equipments, UEs, and wherein the MME is part of the core network, the method comprising: a) assigning, at the MME, after initiation of a user session of an UE, a correlation ID to the user session; b) defining, at the MME, in response to an initiation of a first trace session of the UE during the user session, a first mapping correlation which maps a first trace ID reflecting the first trace session, to the correlation ID, and sending the first mapping correlation to a trace collection entity, TCE; and c) defining, at the MME, in response to an initiation of a second trace session of the UE during the user session, a second mapping correlation which maps a second trace ID reflecting the second trace session, to the correlation ID, and sending the second mapping correlation to the TCE; wherein the first mapping correlation and the second mapping correlation enable the TCE to assign trace session information collected during the first trace session and the second trace session to the user session, and wherein the correlation ID does not comprise UE International Mobile Station Equipment information and does not comprise International Mobile Subscriber Identity information.