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USIM requirements and structure

USIM requirements and structure. NOKIA Mobile Phones TSGT3#3(99)082. Outline of the presentation. The USIM related requirements as (currently) listed by TSG-SA Browsing through the relevant service requirement documents. Summary of the identified requirements.

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USIM requirements and structure

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  1. USIM requirements and structure NOKIA Mobile Phones TSGT3#3(99)082

  2. Outline of the presentation • The USIM related requirements as (currently) listed by TSG-SA • Browsing through the relevant service requirement documents. • Summary of the identified requirements. • NOKIA's proposal for the USIM application content • A comparison of the GSM and the USIM file structures as agreed at the last TSG-T3 meeting.

  3. 3GPP specifications analysed • The following UMTS documents are analysed for USIM requirements: • UMTS 22.00 v2.0.0, "UMTS phase 1". • UMTS 22.01 v3.5.0, " Service aspects; Service principles". • UMTS 22.05 v3.1.0, "UMTS services and capabilities". • draft UMTS 22.29 v1.0.0, "Handover between UMTS and GSM or other Radio systems". NOTE: All these documents have been presented for TSG-SA and will be used as base line for the UMTS standard.

  4. 22.00 v2.0.0

  5. 22.01 v3.5.0 • Ch. 9.2: "(For UMTS Phase 1) It is required that is shall be possible to identify UMTS users using GSM identities, namely IMSI, MSISDN and possibly TMSI and IMEI." • Conclusion: the GSM identities may be reused! • Ch. 9.5:"It shall be possible for several numbers to be associated with a single subscription on a single UICC." • Comment: One IMSI many MSISDN's. • Ch. is devoted to USIM issues.

  6. 22.01 v3.5.0 • Ch. 11.1.1: • Every USIM shall have a unique identity and shall be associated with one and only one home environment. • It shall be possible for a home environment to uniquely identify a user by the USIM. • The USIM shall be used to provide security features. • For access to UMTS services, provided via a UMTS home environment, a valid USIM shall be required. • The USIM shall reside on a UICC, UMTS shall adopt both of the GSM SIM card physical formats. New UMTS terminals may require other formats also. USIM specific information shall be protected against unauthorised access or alteration. • It shall be possible to update USIM specific information via the air interface, in a secure manner.

  7. 22.01 v3.5.0 • 11.1.2: • it shall be possible to have one or more user profiles associated with a number (should this be per subscription?) • the profiles should be controlled by e.g. a PIN mechanism. • Each profile shall have it's own address (e.g. IMUN). • 11.1.3: • In Phase 1 it is only required to support one USIM application on the UICC. • The standard shall not prevent that two USIM applications from different home environments reside on the same UICC. • 11.2: • The physical aspects of the UICC will be handled outside the UMTS specification. • The UICC shall support access to services via GSM and UMTS.

  8. 22.01 v3.5.0 • 11.2.1 The UMTS UICC and Applications other than the USIM: • Other applications than the USIM shall be able to reside on the UICC • each application. may require it's own security mechanisms. • Applications shall reside in their own logical/physical domain. • Applications shall be separate, I.e. some kind of firewall mechanism shall exist between applications. • Applications may share information such as a common address book. • Address applications over the air. • 11.2 Terminals and Multiple UICCs • The standard shall support multiple UICCs (in phase 2).

  9. 22.01 v3.5.0 • 14 Evolution. • "UMTS shall provide some mechanisms which permit pre UMTS users to roam easily onto UMTS and access the services. See Figure 5 for clarification. • UMTS shall provide some mechanisms which permit UMTS users to roam easily onto pre-UMTS systems and access the services." • 17 Handover: • "It shall be possible for users to be handed over between UMTS networks operated by different operators subject to appropriate roaming/commercial agreements. Handover between networks operated by different network operators is not required for UMTS phase 1." • "Handover between UMTS and GSM systems (in both directions) is required, even if this requires changes to GSM specifications. In addition, a generic solution may be implemented in UMTS which allows calls to be handed over between UMTS and other pre-UMTS systems in both directions. For UMTS phase 1, handover between UMTS and GSM networks operated by different network operators is not required."

  10. 22.05 v3.1.0 • 9.2 Execution environment: • The execution environment requires SAT.

  11. 22.29 v1.0.0, Handover Matrix

  12. 22.29 v1.0.0, Security Matrix

  13. 22.29 v1.0.0, Roaming Matrix

  14. Summary key UMTS phase 1 USIM-UICC features • USIM • GSM SIM ph2+ can be used to get UMTS service. • The GSM identities IMSI, MSISDN and possibly TMSI and IMEI. • The USIM shall support multiple user profiles. • Pre-UMTS users shall be able to roam in UMTS networks. • UMTS users shall be able to roam into GSM networks. • Handover between GSM and UMTS shall be supported (for ph1 only intra PLMN handover is required). • UICC • The UICC shall be able to host GSM SIM applications • The UICC shall support multiple applications (telecom and other e.g. banking).

  15. NOKIA’s proposal for the USIM application NOKIA proposes that a separate application under control of 3GPP is created. For phase 1 it will be assigned a special file id e.g. ‘7FXX’ and will reside directly under the MF but for later phases the multi-USIM issue must be handled

  16. BASIC USIM/UICC FUNCTIONALLITY • This USIM application will have the following main features: • Provide access to UMTS systems including security and confidentiality. • Provide access to GSM systems – by providing Ki, A8/3, A5 and other mandatory GSM features. • Provide means to enable handover between GSM and UMTS systems (in phase 1 only intra-PLMN handover will be supported). • For the card (UICC) the following is proposed: • It will have a DIR file that is a collection of application templates containing an AID, an application name and a path to the application. • A GSM application (under 7F20) can coexist with a USIM application on the same card – it is proposed that the two applications can not belong to the same operator, i.e. they are independent.

  17. USIM questions • Why create a USIM application with the listed functionality? • The main reason for creating a USIM application is to create a 3GPP context and to prepare for later phases were multiple USIM applications may reside on the same card which will incur the need to separate all functionality belonging to a specific subscription (operator) in a separate application. Consider the alternative scenario: • For every system an operator has a license to there will be an application! • This would imply that an operator with GSM and UMTS licenses has two applications. • What happens when cards containing multiple USIM’s emerges – should only the first operator with licenses to both systems get a GSM application, i.e. who owns ‘7F20’? Conclusion: Therefore the complete functionality should be located in a separate application.

  18. GSM SIM application

  19. UICC and USIM layout

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