Apparatus, and associated method, for providing an instance identifier to a network database node of a mobile network

Apparatus for an Internet Protocol Multimedia Subsystem (IMS) mobile network application server for facilitating access to a network database node in an IMS mobile network by a user equipment (UE) device that is in connectivity with an access network, said apparatus comprising:

• a serving control that receives a UE-originated message formatted pursuant to a first protocol, the UE-originated message including a first-instance identifier that uniquely identifies the UE;
• an application server, coupled to said serving control to receive a mobility-related event message pursuant to a mobility related event including the first-instance identifier in the first protocol message from said serving control, said application server for determining if a preconfigured information requires a UE check for the mobility related event and for determining if the first-instance identifier is included in the first protocol message, wherein, when the UE check is required and the first instance identifier is included in the first protocol message, said application server initiates the UE check with an Equipment Identity Register (EIR) said application server further including a protocol converter embodied at the IMS mobile network application server adapted to receive said mobility-related event message including the first instance identifier in the first protocol, said protocol converter configured to convert the first-instance identifier included in the mobility-related event -message into a second-instance identifier formatted pursuant to a second protocol, the second-instance identifier comprising the first-instance identifier encoded as a uniform resource name;
• and
• a forwarder embodied at the IMS mobile network application server configured to forward the second-instance identifier on to the EIR whereby the EIR decides whether the mobility-related event is to be permitted.