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TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
Access to the 3GPP Evolved Packet Core (EPC)
via non-3GPP access networks;
Stage 3
(3GPP TS 24.302 version 10.8.1 Release 10)
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3GPP TS 24.302 version 10.8.1 Release 10 1 ETSI TS 124 302 V10.8.1 (2019-04)
Reference
RTS/TSGC-0124302va81
Keywords
LTE,UMTS
ETSI
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DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
TM TM
3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
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GSM and the GSM logo are trademarks registered and owned by the GSM Association.
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3GPP TS 24.302 version 10.8.1 Release 10 2 ETSI TS 124 302 V10.8.1 (2019-04)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TS 24.302 version 10.8.1 Release 10 3 ETSI TS 124 302 V10.8.1 (2019-04)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 7
1 Scope . 8
2 References . 8
3 Definitions, symbols and abbreviations . 10
3.1 Definitions . 10
3.2 Abbreviations . 11
4 General . 12
4.1 Trusted and untrusted accesses . 12
4.2 cdma2000 HRPD Access System . 12
4.3 WiMAX Access System . 12
4.4 Identities . 13
4.4.1 User identities . 13
4.4.2 Identification of IP Services/PDN connections. 13
4.4.3 FQDN for ePDG Selection . 13
4.4.4 Access Network Identity . 13
4.4.5 ANDSF Server Name . 13
4.4.6 Home Agent address(es) . 13
4.4.7 Security Parameters Index . 13
5 Network Discovery and Selection . 14
5.1 Access network discovery and selection procedures . 14
5.1.1 General . 14
5.1.2 Access network discovery procedure . 14
5.1.2.1 Triggering the discovery of operator preferred access networks with the ANDSF . 14
5.1.2.2 Discovering availability of access networks . 14
5.1.3 Access network selection procedure . 14
5.1.3.1 General . 14
5.1.3.2 Specific intra-technology access network selection . 14
5.1.3.2.1 cdma2000 HRPD access network selection . 14
5.1.3.2.2 WiMAX NAP selection . 15
5.2 EPC network selection . 15
5.2.1 General . 15
5.2.2 Generic EPC network selection procedure . 15
5.2.2.1 Identification of the EPC . 15
5.2.2.2 Selection at switch-on or recovery from lack of coverage . 15
5.2.2.2.1 UE selection modes . 15
5.2.2.2.2 Manual EPC network selection . 15
5.2.2.2.3 Automatic EPC network selection . 15
5.2.3 Access technology specific EPC network selection procedures . 16
5.2.3.1 EPC network selection procedures for WiMAX . 16
5.2.3.1.1 Identification of the EPC by the WiMAX access network . 16
5.2.3.1.2 Selection at switch-on or recovery from lack of coverage. 16
5.3 Access Network reselection . 16
5.3.1 General . 16
5.3.2 UE procedures . 16
5.3.3 EPC procedures . 16
5.3.4 Periodic EPC network reselection attempts . 17
5.4 Data traffic routing of IP flows . 17
5.4.1 General . 17
5.4.2 Access technology or access network selection . 17
ETSI
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3GPP TS 24.302 version 10.8.1 Release 10 4 ETSI TS 124 302 V10.8.1 (2019-04)
6 UE – EPC Network protocols . 18
6.1 General . 18
6.2 Trusted and Untrusted Accesses . 18
6.2.1 General . 18
6.2.2 Pre-configured policies in the UE . 18
6.2.3 Dynamic Indication. 18
6.2.4 No trust relationship information . 18
6.3 IP Mobility Mode Selection . 19
6.3.1 General . 19
6.3.2 Static configuration of inter-access mobility mechanism . 19
6.3.3 Dynamic configuration of inter-access mobility mechanism . 19
6.3.3.0 General . 19
6.3.3.1 IPMS indication . 19
6.3.3.1.1 IPMS indication from UE to 3GPP AAA server . 19
6.3.3.1.2 IPMS indication from 3GPP AAA server to UE . 20
6.4 Authentication and authorization for accessing EPC via a trusted non-3GPP access network . 20
6.4.1 General . 20
6.4.2 UE procedures . 21
6.4.2.1 Identity Management . 21
6.4.2.2 EAP-AKA and EAP-AKA' based Authentication . 21
6.4.2.3 Full Authentication and Fast Re-authentication . 21
6.4.2.4 Handling of the Access Network Identity . 22
6.4.2.4.1 General . 22
6.4.2.4.2 ANID indication from 3GPP AAA server to UE . 22
6.4.2.4.3 UE check of ANID for HRPD CDMA 2000 access networks . 22
6.4.2.4.4 UE check of ANID for WiMAX access networks . 22
6.4.2.4.5 UE check of ANID for WLAN access networks . 22
6.4.2.4.6 UE check of ANID for ETHERNET access networks . 22
6.4.3 3GPP AAA server procedures . 23
6.4.3.1 Identity Management . 23
6.4.3.2 EAP-AKA and EAP-AKA' based Authentication . 23
6.4.3.3 Full authentication and Fast Re-authentication . 23
6.4.4 Multiple PDN support for trusted non-3GPP access . 23
6.5 Authentication and authorization for accessing EPC via an untrusted non-3GPP access network . 24
6.5.1 General . 24
6.5.2 Full authentication and authorization . 24
6.5.2.1 General . 24
6.5.2.2 UE procedures . 24
6.5.2.3 3GPP AAA server procedures. 24
6.5.3 Multiple PDN support for untrusted non-3GPP access network . 25
6.6 UE - 3GPP EPC (cdma2000 HRPD Access) . 25
6.6.1 General . 25
6.6.2 Non-emergency case . 26
6.6.2.1 General . 26
6.6.2.2 UE identities . 26
6.6.2.3 cdma2000 HRPD access network identity . 26
6.6.2.4 PLMN system selection . 26
6.6.2.5 Trusted and untrusted accesses . 26
6.6.2.6 IP mobility mode selection . 26
6.6.2.7 Authentication and authorization for accessing EPC . 26
6.6.3 Emergency case . 26
6.6.3.1 General . 26
6.6.3.2 UE identities . 27
6.6.3.3 Authentication and authorization for accessing EPC . 27
6.7 UE - 3GPP EPC (WiMAX Access) . 27
6.7.1 General . 27
6.7.2 Non-emergency case . 27
6.7.2.1 General . 27
6.7.2.2 UE identities . 27
6.7.2.3 WiMAX access network identity . 27
6.7.2.4 Selection of the Network Service Provider . 27
6.7.2.5 Trusted and untrusted accesses . 28
ETSI
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3GPP TS 24.302 version 10.8.1 Release 10 5 ETSI TS 124 302 V10.8.1 (2019-04)
6.7.2.6 IP mobility mode selection . 28
6.7.2.7 Authentication and authorization for accessing EPC . 28
6.7.3 Emergency case . 28
6.8 Communication over the S14 . 28
6.8.1 General . 28
6.8.2 Interaction with the Access Network Discovery and Selection Function . 28
6.8.2.1 General . 28
6.8.2.2 UE procedures . 29
6.8.2.2.1 UE discovering the ANDSF . 29
6.8.2.2.1A ANDSF communication security . 29
6.8.2.2.2 Role of UE for Push model. 30
6.8.2.2.3 Role of UE for Pull model . 30
6.8.2.2.4 UE using information provided by ANDSF . 31
6.8.2.2.4.1 General . 31
6.8.2.2.4.2 Use of Inter-system Mobility Policy . 31
6.8.2.2.4.3 Use of Access Network Discovery Information . 31
6.8.2.2.4.4 Use of Inter-System Routing Policies . 31
6.8.2.3 ANDSF procedures . 32
6.8.2.3.1 General . 32
6.8.2.3.2 Role of ANDSF for Push model . 32
6.8.2.3.3 Role of ANDSF for Pull model . 33
6.9 Handling of Protocol Configuration Options information . 33
7 Tunnel management procedures . 33
7.1 General . 33
7.2 UE procedures . 33
7.2.1 Selection of the ePDG. 33
7.2.2 Tunnel establishment . 34
7.2.3 Tunnel modificatio n . 36
7.2.4 Tunnel disconnection . 36
7.2.4.1 UE initiated disconnection . 36
7.2.4.2 UE behaviour towards ePDG initiated disconnection . 36
7.3 3GPP AAA server procedures . 36
7.4 ePDG procedures . 37
7.4.1 Tunnel establishment . 37
7.4.2 Tunnel modificatio n . 38
7.4.3 Tunnel disconnection . 38
7.4.3.1 ePDG initiated disconnection . 38
7.4.3.2 ePDG behaviour towards UE initiated disconnection . 39
8 PDUs and parameters specific to the present document . 39
8.1 3GPP specific coding information defined within present document . 39
8.1.1 Access Network Identity format and coding . 39
8.1.1.1 Generic format of the Access Network Identity . 39
8.1.1.2 Definition of Access Network Identities for Specific Access Networks . 39
8.2 IETF RFC coding information defined within present document . 40
8.2.1 IPMS attributes . 40
8.2.1.1 AT_IPMS_IND attribute . 40
8.2.1.2 AT_IPMS_RES attribute . 41
8.2.2 Access Network Identi
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