| --- |
| Author: Timea Moder |
| Version: 1551-1/CNL 113 862, Rev. PB1 |
| Date: 2018-08-02 |
| --- |
| = NAS EPS v15.2.0 Protocol Modules for TTCN-3 Toolset with TITAN, Function Description |
| :author: Timea Moder |
| :revnumber: 1551-1/CNL 113 862, Rev. PB1 |
| :revdate: 2018-08-02 |
| :toc: |
| |
| *Abstract* |
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| This is the description for the NAS EPS v15.2.0 protocol module. The NAS EPS v15.2.0 protocol module is developed for the TTCN-3 Toolset with Titan. This document should be read together with <<_2,Product Revision Information>>. |
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| = Functionality |
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| The NAS EPS v15.2.0 protocol module implements the message structures of the <<_5, related protocol>> in a formalized way, using the standard specification language, TTCN-3. This allows defining of test data (templates) in the TTCN-3 language and correctly encoding/decoding messages when executing test suites using the Titan TTCN-3 test environment. |
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| The NAS EPS v15.2.0 protocol module uses <<_1,Titan’s RAW encoding attributes>> and hence is usable with the Titan test toolset only. |
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| == Implemented protocols |
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| This set of protocol modules implements protocol messages and constants of the NAS EPS v15.2.0 protocol as described <<_5,here>>, which refers to other 3GPP Technical Specifications described <<_6,here>>, <<_7,here>>, and <<_8,here>>. |
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| === Modified and non-implemented Protocol Elements |
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| None. |
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| == Backward incompatibilities |
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| None. |
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| == System Requirements |
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| Protocol modules are a set of TTCN-3 source code files that can be used as part of TTCN-3 test suites only. Hence, protocol modules alone do not put specific requirements on the system used. However, in order to compile and execute a TTCN-3 test suite using the set of protocol modules, the following system requirements must be satisfied: |
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| * Titan TTCN-3 Test Executor version CRL 113 200/6 R3A (6.3.pl0) or higher installed. For Installation Guide see <<_4,here>>. |
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| NOTE: This version of the test port is not compatible with Titan releases earlier than CRL 113 200/6 R3A. |
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| = Usage |
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| == Installation |
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| The set of protocol modules can be used in developing TTCN-3 test suites. Since the NAS EPS v15.2.0 protocol is used as a part of a TTCN-3 test suite, this requires TTCN-3 Test Executor to be installed before the module can be compiled and executed together with other parts of the test suite. For more details on the installation of TTCN-3 Test Executor, see the relevant section of the <<_4,Installation Guide for the TITAN TTCN-3 Test Executor>>. |
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| == Configuration |
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| None. |
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| == Examples |
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| None. |
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| = Interface description |
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| == Top Level PDU |
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| The top level PDU is the TTCN-3 record PDU_NAS_EPS. |
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| [[encoding-decoding-and-other-related-functions]] |
| == Encoding/decoding and other related functions |
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| This product also contains encoding/decoding functions, which assure correct encoding of messages when sent from Titan and correct decoding of messages when received by Titan. |
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| === Implemented encoding and decoding functions |
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| [width="100%",cols="34%,33%,33%",options="header",] |
| |==================================================================================== |
| |Name |Type of formal parameters |Type of return value |
| |`enc_PDU_NAS_EPS` |PDU_NAS_EPS |octetstring |
| |`dec_PDU_NAS_EPS` |octetstring |PDU_NAS_EPS |
| |`dec_PDU_NAS_EPS_backtrack` |octetstring, PDU_NAS_EPS |integer |
| |`enc_EPS_MobileIdentityV_NAS_EPS` |EPS_MobileIdentityV |octetstring |
| |`dec_EPS_MobileIdentityV_NAS_EPS` |octetstring |EPS_MobileIdentityV |
| |`dec_EPS_MobileIdentityV_NAS_EPS_backtrack` |octetstring, EPS_MobileIdentityV |integer |
| |`enc_IMSI_NAS_EPS` |IMSI |octetstring |
| |`dec_IMSI_NAS_EPS` |octetstring |IMSI |
| |`dec_IMSI_NAS_EPS_backtrack` |octetstring, IMSI |integer |
| |`enc_GUTI_NAS_EPS` |GUTI |octetstring |
| |`dec_GUTI_NAS_EPS` |octetstring |GUTI |
| |`dec_GUTI_NAS_EPS_backtrack` |octetstring, GUTI |integer |
| |`enc_IMEI_NAS_EPS` |IMEI |octetstring |
| |`dec_IMEI_NAS_EPS` |octetstring |IMEI |
| |`dec_IMEI_NAS_EPS_backtrack` |octetstring, IMEI |integer |
| |==================================================================================== |
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| = Terminology |
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| == Abbreviations |
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| NAS:: Non-Access-Stratum |
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| EPS:: Evolved Packet System |
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| TTCN-3:: Testing and Test Control Notation version 3 |
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| PDU:: Protocol Data Unit |
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| = References |
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| 1. [[_1]]ETSI ES 201 873-1 v.4.1.2 (2009-07) + |
| The Testing and Test Control Notation version 3. Part 1: Core Language |
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| 2. [[_2]]109 21-1/CNL 113 862-1 Uen + |
| NAS EPS v15.2.0 Protocol Modules for TTCN-3 Toolset with TITAN, Product Revision Information |
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| 3. [[_3]] link:https://github.com/eclipse/titan.core/blob/master/usrguide/referenceguide[2/198 17-CRL 113 200/6] Uen + |
| Programmer’s Technical Reference for the TITAN TTCN-3 Test Executor |
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| 4. [[_4]] link:https://github.com/eclipse/titan.core/blob/master/usrguide/installationguide[1/1531-CRL 113 200/6] Uen + |
| Installation Guide for the TITAN TTCN-3 Test Executor |
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| 5. [[_5]]3GPP TS 24.301 V15.2.0 + |
| Technical Specification + |
| 3rd Generation Partnership Project; + |
| Technical Specification Group Core Network and Terminals; + |
| Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3 + |
| (Release 15) |
| |
| 6. [[_6]]3GPP TS 24.008 V15.3.0 + |
| Technical Specification + |
| 3rd Generation Partnership Project; + |
| Technical Specification Group Core Network and Terminals; + |
| Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 + |
| (Release 15) |
| |
| 7. [[_7]]3GPP TS 24.011 V15.1.0 + |
| Technical Specification + |
| 3rd Generation Partnership Project; + |
| Technical Specification Group Core Network and Terminals; + |
| Point-to-Point (PP) Short Message Service (SMS) support on mobile radio interface + |
| (Release 15) |
| |
| 8. [[_8]]3GPP TS 24.161 V15.0.0 + |
| Technical Specification + |
| 3rd Generation Partnership Project; + |
| Technical Specification Group Core Network and Terminals; + |
| Network-Based IP Flow Mobility (NBIFOM); Stage 3 + |
| (Release 15) |
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| = Change Information |
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| == R1A |
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| Initial implementation. |
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| == R2A |
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| Prepared to be open source. Behavior unchanged. |