1、 ETSI TS 1Digital cellular telecoUniversal Mobile TelRequiremWireless Local Are(3GPP TS 22.2TECHNICAL SPECIFICATION122 234 V13.0.0 (2016communications system (Phaelecommunications System (LTE; ments on 3GPP system to ea Network (WLAN) interwo.234 version 13.0.0 Release 1316-01) hase 2+); (UMTS); ork
2、ing 13) ETSI ETSI TS 122 234 V13.0.0 (2016-01)13GPP TS 22.234 version 13.0.0 Release 13Reference RTS/TSGS-0122234vd00 Keywords GSM,LTE,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Associa
3、tion but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print
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9、e GSM Association. ETSI ETSI TS 122 234 V13.0.0 (2016-01)23GPP TS 22.234 version 13.0.0 Release 13Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly avail
10、able 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 serve
11、r (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
12、, essential to the present document. 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 i
13、nterpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “nee
14、d 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 ETSI TS 122 234 V13.0.0 (20
15、16-01)33GPP TS 22.234 version 13.0.0 Release 13Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 6g34 General description. 6g35 High le
16、vel requirements . 7g35.1 Service principles . 7g35.1.1 Numbering 7g35.1.2 USIM and UICC . 7g35.1.3 Roaming 8g35.1.4 Charging . 8g35.1.5 Subscription 8g35.1.6 Emergency calls 8g35.1.7 Interworking between PLMN and WLANs 8g35.1.7.1 General 8g35.1.7.2 Simultaneous connection to I-WLANs and 3GPP system
17、s . 10g36 Service requirements 10g36.1 Network selection . 10g36.1.1 PLMN selection procedures 10g36.1.2 Dual mode 3GPP / WLAN devices 13g36.2 Operator Determined Barring . 13g36.3 Support of PS domain services . 13g36.4 Support for service continuity 13g36.5 Support of LCS . 13g36.6 Support of IFOM
18、 13g37 Charging . 14g3Annex A (informative): Change history . 15g3History 17g3ETSI ETSI TS 122 234 V13.0.0 (2016-01)43GPP TS 22.234 version 13.0.0 Release 13Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document a
19、re subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the
20、 first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is increment
21、ed when editorial only changes have been incorporated in the document. Introduction Interworking of WLAN systems with the 3GPP system was the subject of a feasibility study 2. Suitable requirements were derived and incorporated into existing specifications. For this release, all requirements will be
22、 contained in the present document with suitable references in other specifications to guide the reader to I-WLAN requirements. ETSI ETSI TS 122 234 V13.0.0 (2016-01)53GPP TS 22.234 version 13.0.0 Release 131 Scope The present document specifies the functional requirements placed on the 3GPP system
23、for interworking WLAN with the 3GPP system. Guidance is given for WLAN operators intending to provide the interworked WLAN capability. Maintenance of the I-WLAN feature is discontinued as of Release 12. No further changes to this specification are intended. If any future evolution of the procedures
24、in this specification is necessary, it should be documented in other specifications. 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, editio
25、n 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 v
26、ersion of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TR 22.934 (V6): “Feasibility study on 3GPP system to Wireless Local Area Network (WLAN) interworking“. 3 RFC 2486: “The Network Access Identifier“. 4 3GPP TS 22.101: “S
27、ervice principles“. 5 3GPP TS 22.129: “Handover Requirements between UTRAN and GERAN or other Radio Systems“. 6 3GPP TS 22.071: “Location Services (LCS); Stage1“. 7 3GPP TR 22.935: “Feasibility Study on Location Services (LCS) for Interworking-WLAN“. 8 3GPP TR 22.278: “ Service requirements for the
28、Evolved Packet System (EPS) “. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply 3GPP-WLAN Interworking: Used generically to refer to interworking between the 3GPP system and the WLAN family of standards 3GPP PS based
29、services: All services transported by the 3GPP PS domain. Environment: The type of area to be covered by the WLAN network of a 3GPP-WLAN interworking; e.g. public, corporate and residential ETSI ETSI TS 122 234 V13.0.0 (2016-01)63GPP TS 22.234 version 13.0.0 Release 13Home WLAN: The WLAN that is int
30、erworking with the HPLMN of the 3GPP-WLAN interworking user Interworking WLAN: WLAN that interworks with a 3GPP system. Offline Charging: See 1 Online Charging: See 1 Serving WLAN: The interworking WLAN that the user is connected to, i.e. either a visited or a home WLAN. Visited WLAN: An interworkin
31、g WLAN that interworks only with a visited PLMN. WLAN coverage: An area where wireless local area network access services are provided for interworking by an entity in accordance with WLAN standards. WLAN roaming: The ability for a 3GPP-WLAN interworking user (subscriber) to function in a serving WL
32、AN different from the home WLAN 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: APN Access Point Name CDR Charging Data RecordCS Circuit SwitchedGGSN Gateway GPRS Support Node GPRS General Packet Radio Service HPLMN Home PLMN IMS IP Multimedia Subsystem
33、 IP Internet Protocol IPv4 IP version 4 IPv6 IP version 6 I-WLAN Interworked / interworking WLAN LCS Location Services PDG Packet Data Gateway PLMN Public Land Mobile Network PS Packet Switched SIM Subscriber Identity Module UE User Equipment UICC USIM Integrated Circuit Card USIM Universal Subscrib
34、er Identity Module VPLMN Visited PLMN WLAN Wireless Local Area Network Further abbreviations are given in 3GPP TR 21.905 1. 4 General description The growth of public WLANs provides an opportunity for appropriately-equipped UEs to access HPLMNs and VPLMNs via the WLANs. As shown in Figure 1, the WLA
35、Ns that provides this functionality are referred to as I-WLANs. The I-WLANs (represented by WLAN 1 through WLAN 3) are connected to PLMNs, enabling UEs to access 3GPP services on HPLMNs and VPLMNs. Services provided by WLANs directly to UEs that do not involve PLMNs are outside the scope of this spe
36、cification. The solid lines identify elements that are within the 3GPP scope and the dashed lines identify elements which are not specified by 3GPP. 3GPP TS 22.234 version 13.0.0 Release 13Figure 1: WNetwork selection shall ensure that the user isavailable. As a consequence the preference ofanother,
37、 even when the I-WLAN identity is uOnly UEs with WLAN capability are within tIt is expected that the UEs with both WLAN aThe access to the WLAN (as shown by the daconform to those specifications to access the Wfrom PLMNs through I-WLANs. The UE wilHPLMN. NOTE: Detailed background information 5 High
38、level requir5.1 Service principles5.1.1 Numbering When the UE is connected via a I-WLAN, the(userrealm) as defined in RFC 2486 3. 5.1.2 USIM and UICC Access via an I-WLAN shall be possible usinAccess to services via an I-WLAN with a singI-WLAN access parameters include operator WLAN access parameter
39、s on the USIM. ETSI ETSI TS 122 2347: WLAN-3GPP system block diagram r i connected to the highest priority PLMN when the HPLof an I-WLAN and connected PLMN may change from os unchanged. the scope of this specification. N and 3GPP radio access network capability will exist. dashed line) is covered by
40、 specifications outside of 3GPPLAN and to the 3GPP specifications in order to obtainill have access to 3GPP services when its registration is con is provided in clause 4 of 2. uirements es the addressing shall be based on Network Access Identifieng earlier releases (than the current release) of the
41、UICCle UICC shall be possible. or and user preferences on network selection. It shall be po3 V13.0.0 (2016-01)PLMN is not one country to PP. Thus UEs must tain 3GPP services is confirmed by its r (NAI) format C or using a SIM. possible to store I-ETSI ETSI TS 122 234 V13.0.0 (2016-01)83GPP TS 22.234
42、 version 13.0.0 Release 13For I-WLAN access and PLMN selection purposes, the WLAN UE shall by default use the I-WLAN access parameters stored in the UICC (if they are available). 5.1.3 Roaming Roaming from the home environment to I-WLANs is required. The I-WLAN may be part of the home environment or
43、 a visited network. The interworking shall support the case where a 3GPP operator does not operate the I-WLAN. 5.1.4 Charging Charging in the 3GPP system shall not be compromised when access is via an I-WLAN. 5.1.5 Subscription The subscription to a network operator may identify the radio access tec
44、hnologies over which the subscriber may access their services e.g. I-WLAN. 5.1.6 Emergency calls Any attempt to make an emergency call shall be handled as defined in 3GPP TS 22.1014. 5.1.7 Interworking between PLMN and WLANs 5.1.7.1 General WLAN-3GPP system interworking is defined as a wireless IP c
45、onnectivity service where the user obtains access via a Wireless LAN technology. It shall be possible to deploy the WLAN as an integral part of the 3GPP system or the two systems can be separate. The 3GPP system shall be capable of interworking with one or more WLANs and a WLAN shall be capable of i
46、nterworking with one or more 3GPP systems see figure 2. ETSI ETSI TS 122 234 V13.0.0 (2016-01)93GPP TS 22.234 version 13.0.0 Release 13Figure 2: WLAN-3GPP system interworking relationships The service is subject to a 3GPP system subscription (see clause 15). Both IPv4 and IPv6 connectivity via a Wir
47、eless LAN (WLAN) shall be supported. It is an operator decision as to the level of interworking supported. This can be broadly grouped as: - 3GPP based access control and charging only. (Scenario 2 of TR 22.934 2) - Access to 3GPP PS based services, e.g. IMS. (Scenario 3 of TR 22.934 2) - Access to
48、3GPP PS based services with service continuity. The user may or may not notice a disruption in service, depending upon the level of service continuity supported. This is further defined in TS 22.129 5. (Scenarios 4 and 5 of TR 22.934 2) NOTE: Further information on these levels of interworking and t
49、he use cases supported can be found in TR 22.934 2. The different levels of interworking supported are defined to be independent. Hence, it shall be possible for a network operator to provide a particular level of interworking independently to other levels of interworking. NOTE: For example, it is possible for a network operator to provide a level of interworking to provide access to 3GPP PS based services (Scenario 3 of TR 22.934 2) without needing to provide the level of interworking for 3GPP based access control and charging
