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Content for  TS 22.038  Word version:  16.0.0

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1  ScopeWord‑p. 6
This 3GPP Technical Specification defines the stage one description of the USIM application Toolkit (USAT). Stage one is an overall service description, primarily from the subscriber's and serving environment's points of view, and does not deal with the details of the human interface itself.
This TS includes information applicable to network operators, serving environments and terminal, switch and database manufacturers.
This TS contains the core requirements for a USIM application Toolkit (USAT) which are sufficient to provide a complete service.
It is highly desirable however, that technical solutions for a USIM application Toolkit (USAT) are sufficiently flexible to allow for possible enhancements. Additional functionalities not documented in this TS may implement requirements which are considered outside the scope of this TS. This additional functionality may be on a network-wide basis, nation-wide basis or particular to a group of users. Such additional functionality shall not compromise conformance to the core requirements of the service.
Reproduction of 3GPP TS 22.038, Figure 1: Scope of this TS
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As indicated in Figure 1, the scope of this TS encompasses the USAT functionality in the UE (comprising USIM and ME) and the interaction with the PLMN environment. The USAT Server is not necessarily a separate entity as shown in the figure; nodes providing USAT services may also exist within the PLMN. The functionalities of the USAT servers (such as charging aspects, security level classification etc.) are not covered by this specification.
The requirements are considered to be applicable to both GSM and UMTS systems.
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2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
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2.1  Normative referencesWord‑p. 7
[1]  TS 31.101: "UICC-Terminal Interface; Physical and Logical Characteristics".
[2]  Void.
[3]  Void.
[4]  TS 51.011: "Specification of the Subscriber Identity Module, Mobile Equipment (SIM - ME) interface" Release 4.
[5]  Void.
[6]  Void.
[7]  TR 21.905: "Vocabulary for 3GPP Specifications".
[8]  Void.
[9]  Void.
[10]  Void.
[11]  Void.
[12]  Void.
[13]  Void.
[14]  TS 31.111: "USIM Application Toolkit (USAT)".
[15]  TS 31.102: "Characteristics of the USIM Application".
[16]  TS 22.140: "Multimedia Messaging Service (MMS); Stage 1".
[17]  TS 51.014: "Specification of the SIM Application Toolkit for the Subscriber Identity Module - Mobile Equipment (SIM - ME) interface" Release 4.
[18]  ETSI TS 102 240: "UICC Application Programming Interface and Loader Requirements; Service description" Release 6.
[19]  TS 22.071: "Location Services (LCS); Service description; Stage 1"..
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3  Definitions and abbreviations

3.1  Definitions

For the purposes of this TS the following definitions apply:
applet:
a small program that is intended not to be run on its own, but rather to be embedded inside another application.
application:
USAT information in the form of software, applications, associated resources (e.g. libraries) and/or data.
bearer independent protocol:
Mechanism at the interface between the USIM and the ME which provide access to the data bearers supported by the ME.
buffer:
A dedicated memory used to temporarily store data to be sent and/or retrieved.
content:
data and/or information associated with, or independent of, a particular application which may be presented to or collected from a user.
data channel:
allow the USIM and the network to exchange data using a selected data exchange capability.
link:
radio resource.
USAT service:
a service enhanced (or made possible) by USAT technology.
USAT execution environment:
the USAT execution environment provides the mechanisms to operate single or multiple USAT-applications.
USAT serving environment:
an entity which delivers USAT services to the subscriber. This is normally the PLMN operator, but could be an entity with USAT responsibility (which may have been delegated by the PLMN operator).
USAT subscriber:
the owner of a PLMN subscription who has entered into an agreement with a USAT serving environment for USAT services. Access to USAT services though other types of networks is out of scope of this specification.
USAT server:
a node supporting USAT services in the USAT service environment.
user:
the user of a USAT UE , who may or may not be the subscriber.
(U)SIM:
SIM and/or USIM.
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3.2  AbbreviationsWord‑p. 8
For the purposes of this TS the following abbreviations apply:
API
Application Programming Interface
CAMEL
Customized Applications for Mobile network Enhanced Logic
CS
Circuit Switched
CSE
CAMEL Service Environment
IN
Intelligent Network
ME
Mobile Equipment
MExE
Mobile Execution Environment
MMI
Man Machine Interface
NO
Network Operator
PLMN
Public Land Mobile Network
SAT
SIM Application Toolkit
SCI
Subscriber Controlled Input
SIM
Subscriber Identity Module
UE
User Equipment
USAT
USIM Application Toolkit
USIM
Universal Subscriber Identity Module
Further abbreviations are given in TR 21.905.
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4  Description

USAT provides a standardised execution environment for applications stored on the UICCand the ability to utilize certain functions of the supporting mobile equipment. USAT provides mechanisms which allow applications, existing in theUICC, to interact and operate with any ME which supports the specified mechanism(s) thus ensuring interoperability between a UICC and an ME, independent of the respective manufacturers and operators. A transport mechanism is provided enabling applications to be down-loaded and/or updated.
A significant aspect of USAT is the highly secure environment provided by the UICC. This is further enhanced by the fact that the subscriber and the issuer of the UICC and also the USAT applications have a "trusted relationship" (e.g. the subscriber trusts the issuer of the UICC to charge correctly for the resources used). This allows certain features, such as call control, to be implemented with a degree of freedom which would not be acceptable in a "non-trusted relationship".
The introduction of the USAT execution environment into UEs (i.e. ME+USIM) is a significant step forward in their evolution. The ability of UEs to support USAT represents an extension of the UE's and PLMN capabilities. In order to allow current and future technologies to exploit and benefit from this, a standardized means of exchanging the MEs' and USIMs capability profiles is supported.
This Technical Specification defines an enhancement of the USIM/ME interface.
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