; MIN-based IMSI to True IMSI - Ericsson's Implementation Status
Documents
Resources
Learning Center
Upload
Plans & pricing Sign in
Sign Out
Your Federal Quarterly Tax Payments are due April 15th Get Help Now >>

MIN-based IMSI to True IMSI - Ericsson's Implementation Status

VIEWS: 24 PAGES: 6

  • pg 1
									   MIN-based IMSI to True IMSI -
    Ericsson’s Implementation
              Status
                                  Alain Bouvier
                          alain.bouvier@ericsson.com


                 CDG International Roaming Team Meeting
                         Beijing, March 02-03, 2005




EMC-05:000497 Uen Rev B       2005-02-27   1              CDG IR Team
Mobile Identity – Network Support for true-IMSI


 Support for TIA/EIA/IS-807 (TIA/EIA-41-D
  Internationalization Enhancements, i.e. Global
  Title Translation);
 Support for TIA/EIA/IS-751 (TIA/EIA-41-D
  Modifications to support IMSI).




  EMC-05:000497 Uen Rev B   2005-02-27   2     CDG IR Team
Mobile Identity – Backward Compatibility


       Identity             Format                Comment
                            MCC + MNC + SN        Introduced in IS-95A
       True-IMSI
                            3d + 1-3d + Max 10d

                            MCC + MNC + MIN/IRM   Introduced in IS-95B
       Generic MIN-based
                            3d + 2d + 10d
       IMSI
                            MCC + 00 + MIN/IRM    Introduced in the US where
       Special MIN-based
                            3d + 00 + 10d         MCC 310 was reserved for
       IMSI – Format A                            MIN-based IMSI

                            000 + 00 + MIN/IRM    -
       Special MIN-based
                            000 + 00 + 10d
       IMSI – Format B


  EMC-05:000497 Uen Rev B    2005-02-27   3                              CDG IR Team
Mobile Identity – Classification

• To simplify the network elements upgrade procedure to
  support true-IMSI, the Serving System could classify the
  mobile identity and substitute the MIN in IS-41 messages
  when appropriate. This could also be performed by an
  Inter Working Unit.
                                                     A True-IMSI

                     HLR
                    Sub A

                  Home                       MSC
                                                   Roaming
                 Country                            Country
                     HLR
                    Sub B

                                                     B MIN-Based


  EMC-05:000497 Uen Rev B   2005-02-27   4               CDG IR Team
Mobile Identity – Transitioning
• Ericsson has started to look into alternatives to support the
  transitioning from MIN-based IMSI to true-IMSI;
• ANSI-41 messages routing to the home HLR should not
  be an issue if GTT is used with the IMSI/MDN as GT;
• To properly construct the ANSI-41 messages, the Serving
  System or alternatively an IWU could analyze the mobile
  identity and determine if it is a MIN-based IMSI or true-
  IMSI;
• Ericsson’s MSC support for MIN-based to true-IMSI
  transitioning could be available in the Q3 2006 timeframe
  depending on requirements.


   EMC-05:000497 Uen Rev B   2005-02-27   5              CDG IR Team
TAKING YOU FORWARD

                                       ?
                             QUESTIONS ?
                                         ?

   EMC-05:000497 Uen Rev B   2005-02-27   6   CDG IR Team

								
To top