TSG-Terminals Working Group 3 (USIM) meeting #2	TSGT3#2(99)055
Munich 17th - 19th February, 1999	Page 1

Source:	ARIB SWG7 Chairman

Title:		Proposed requirements from T3#1(99)005

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1.	Introduction
The document T3#1(99)005 presents the USIM requirements from ARIB, while T3#1(99)002/032 (UMTS/3GPP 21.11) does the requirements from ETSI SMG9. It was agreed in the 1st WG3 meeting in Nice to merge those documents and that ARIB requirements in T3#1(99)005, which are not yet mentioned in UMTS/3GPP 21.11, should be identified. This document describes results of studying in order to identify the ARIB requirements in T3#1(99)005.

2.	Identified requirements
The following USIM requirements and functionality are identified in the document T3#1(99)005, which are missed or not clearly described in UMTS/3GPP 21.11.

2.1	Over the Air Service Provisioning (in section 2.2.4)
The over the air service provisioning feature allows a potential service subscriber to activate (i.e., become authorised for) new service without the intervention of a third party (e.g., authorised dealers). The feature consists of over-the-air programming of certain mobile station indicators and electronic key agreement for secure transfer of the A-key to authorise telecommunication services with a specific service provider.

2.2	Support of updating and controlling security data and mechanism
Security keys and possible devices, such as the UIM, distributed to the 3G Mobile System users should be easily and securely managed and updated (in section 2.2.7 (6)).

A 3G Mobile System shall provide Version control of security data and mechanism which provides a means by which security data and mechanisms can be updated and controlled between the parties involved (in section 2.2.7 (12))

2.3	USIM global portability
The USIM global portability is mentioned in the section 3.2.1.1 and 3.2.1.2. It should be understood that the concept covers the roaming between one and another 3G family member system (e.g. the 3GPP system and others). 

3.	Proposals
In order to include the ARIB requirements into UMTS/3GPP 21.11, the following changes are proposed.

3.1	Over the Air Service Provisioning
A new section 6.X ‘Over the Air Service Provisioning’ is proposed in 3GPP 21.11. A proposed content of the section 6.X is as follows.

6.X Over the Air Service Provisioning 
The USIM is required to support the over the air service provisioning feature, which allows a potential service subscriber to activate (i.e., become authorised for) new service without the intervention of a third party (e.g., authorised dealers). The feature consists of over-the-air programming of certain mobile station indicators and electronic key agreement for secure transfer of the subscriber authentication key to authorise telecommunication services with a specific service provider.

3.2	Support of updating and controlling security data and mechanism
It is proposed to add a new text to the 3rd paragraph in the section 6.2 ‘Data Download’ as follows.

It is envisaged that in UMTS phase 1, the download of subscription-related applications (e.g. SIM application toolkit) can be achieved. The generic application download (e.g. download of a new USIM and/or new security data and mechanisms) is considered to be a UMTS phase 2 issue.

In order to reflect the requirements for the version control function of security data and mechanism, it is proposed to add the following text to the section 4 ‘Security Requirements’.

The version control of security data and mechanism shall be provided for a means by which security data and mechanisms in the distributed USIM can be securely updated and controlled.

3.3	USIM global portability 
A new section 11 ‘USIM global portability’ is proposed in 3GPP 21.11. A proposed content of the section 11 is as follows. 

11 USIM global portability 

The USIM global portability shall be possible to provide a user with a means to roam between different 3G family members, where a USIM provided by the home network is used with an MT available by the visited network.

Figure X depicts the USIM global portability

Figure X USIM Global Portability

4.	Conclusion
The ARIB requirements from T3#2(99)005 are identified and proposed to be included in UMTS/3GPP 21.11.

5.	References
[1] T3#1(99)002: UMTS USIM and IC card requirements (UMTS 21.11 version 1.0.0) 
[2] T3#1(99)005: USIM Functionality and Requirements in ARIB
[3] T3#1(99)032: 3GPP USIM and IC card requirements (3GPP 21.11 version 1.1.0)