IMSI acquisition method and device, and signaling monitoring system

An International Mobile Subscriber Identity, IMSI, acquisition device, comprising a processor and a storage device, wherein the storage device stores processor-executable programs, and the processor-executable programs cause the processor to perform the steps in following modules:

• a collection module, a first acquisition module, a second acquisition module, a subscriber identity association module and an IMSI acquisition module, wherein:
• the collection module is arranged to collect an S1-MME interface signaling and a first interface signaling which is associated with the S1-MME interface signaling, wherein the S1-MME interface is associated with a first interface carrying the IMSI;
• the first acquisition module is arranged to acquire a first identity from the S1-MME interface signaling, wherein the first identity comprises at least one of a Globally Unique Temporary User Equipment Identity, GUTI, and a third identity;
• the second acquisition module is arranged to acquire an IMSI and a second identity from the first interface signaling, wherein the second identity and the third identity are a same S1-U bearer channel identity carried by the S1-MME interface signaling and the first interface signaling;
• the subscriber identity association module is arranged to associate the first identity, the second identity and the IMSI;
• and
• the IMSI acquisition module is arranged to acquire a corresponding IMSI according to an association result and the first identity in the S1-MME interface signaling, and backfill the acquired IMSI into bills such that bills of the S1-MME interface all have the IMSI and are directly associated to a subscriber.

A signaling monitoring system, comprising a processor and a storage device, wherein the storage device stores processor-executable programs, and the processor-executable programs cause the processor to perform the steps in following modules:

• a data access module, an interface protocol identification module, an S1-MME interface signaling monitoring and analysis module, a first interface subscriber identity acquisition module, a subscriber identity association module and a bill sending module, wherein:
• the data access module is arranged to collect an S1-MME interface data packet and a first interface data packet, wherein the first interface data packet is a data packet of a first interface which is associated with an S1-MME interface;
• the interface protocol identification module is arranged to process the collected data packets, send the S1-MME interface data packet to the S1-MME interface signaling monitoring and analysis module, and send the first interface data packet to the first interface subscriber identity acquisition module;
• the S1-MME interface signaling monitoring and analysis module is arranged to extract an S1-MME interface signaling from the S1-MME interface data packet and process the S1-MME interface signaling to generate an S1-MME interface signaling bill;
• acquire a first identity from the S1-MME interface signaling and send the first identity to the subscriber identity association module, wherein the S1-MME interface is associated with a first interface carrying an International Mobile Subscriber Identity, IMSI, and the first identity comprises at least one of a Globally Unique Temporary User Equipment Identity, GUTI, and a third identity;
• and acquire a corresponding IMSI according to an association result of the subscriber identity association module and the first identity in the S1-MME interface signaling, and backfill the IMSI into the S1-MME interface signaling bill;
• the first interface subscriber identity acquisition module is arranged to extract a first interface signaling from the first interface data packet and acquire an IMSI and a second identity from the first interface signaling and send the IMSI and the second identity to the subscriber identity association module, wherein the second identity and the third identity are a same S1-U bearer channel identity carried by the S1-MME interface signaling and the first interface signaling;
• the subscriber identity association module is arranged to associate the first identity, the second identity and the IMSI;
• and
• the bill sending module is arranged to send the backfilled S1-MME interface signaling bill to an upper-level system such that bills of the S1-MME interface all have the IMSI and are directly associated to a subscriber.