1、 ETSI TR 122 912 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Study into network selection requirements for non-3GPP access (3GPP TR 22.912 version 15.0.0 Release 15) TECHNICAL REPORT ETSI ETSI TR 122 912 V15.0
2、.0 (2018-07)13GPP TR 22.912 version 15.0.0 Release 15Reference RTR/TSGS-0122912vf00 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 Association but non lucratif enregistre l
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9、tion. ETSI ETSI TR 122 912 V15.0.0 (2018-07)23GPP TR 22.912 version 15.0.0 Release 15Intellectual 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 publicl
10、y 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 We
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13、r reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership
14、 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 identiti
15、es can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “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 expressio
16、n of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 122 912 V15.0.0 (2018-07)33GPP TR 22.912 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g3
17、2 References 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 6g34 Introduction 6g35 Example Use Cases 6g35.1 Use Case 1 6g35.2 Use Case 2 7g35.3 Use Case 3 7g35.4 Use Case 4 8g35.5 Use Case 5 8g35.6 Use Case 6 8g36 Access types . 9g36.1 Public 9g36.2 Corporate 9g36.3 P
18、rivate home . 10g37 Requirements for automatic selection 10g37.1 General requirements . 10g37.2 Behaviour of the UE . 11g37.3 Network identification 11g37.4 Selection of a network access . 12g38. Requirements for manual selection 12g38.1 General requirements . 12g38.2 Behaviour of the UE . 13g38.3 N
19、etwork identification 13g38.4 Presentation to the user . 13g38.5 Selection by the user. 13g39 Requirements for operator management 13g39.1 General requirements . 13g39.2 Update of the list 13g39.3 Additional information . 14g310 Requirements for end-user management 14g310.1 General requirements . 14
20、g310.2 User entry . 14g311 Service considerations 14g311.1 User experience 14g311.2 Regulatory services 14g311.3 Other services . 15g312 Conclusions 15g3Annex A: Change history 16g3History 17g3ETSI ETSI TR 122 912 V15.0.0 (2018-07)43GPP TR 22.912 version 15.0.0 Release 15Foreword This Technical Repo
21、rt has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are 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
22、 identifying change of release date and an increase in version number as follows: Version x.y.z where: x the 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
23、changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TR 122 912 V15.0.0 (2018-07)53GPP TR 22.912 version 15.0.0 Release 151 Scope The present document considers the
24、 network selection procedures requirements for non-3GPP access types. The network selection principles covered include both automatic and manual selection. Also considered is the operator management of network preferences for non-3GPP access types and how the device accesses networks offered through
25、 non-3GPP access. Non-3GPP access includes any method by which the UE is connected either to a core network or to a server other than by using the radio bearers standardised by 3GPP. Examples are: BlueTooth, WLAN and fixed (wired connections). UEs considered in this study are UEs able to connect to
26、a non-3GPP network in addition to its 3GPP capabilities (i.e. dual mode, multi-mode UEs). This work in this TR is applicable to GSM and UMTS and there are no additional considerations of EPS (Evolved Packet System). Roaming and handover conditions between 3GPP and non-3GPP networks is not under the
27、scope of this document and will not be treated here. They may be referred to, however, for the consistency of use cases and access description consistency. Connection to a 3GPP operators core network by WLAN is out of scope where this is I-WLAN. This is covered in 2. Use of the Generic Access Networ
28、k is out of scope. Considerations of tariffing are out of scope. 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 nu
29、mber, 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 docum
30、ent in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS22.234: “Requirements on 3GPP system to Wireless Local Area Network (WLAN) interworking“ 3 3GPP TS22.011: “Service Accessibility” 3 Definitions and abbreviations 3.1 Definitions For the
31、purposes of the present document, the terms and definitions given in TR 21.905 1 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 1. Primary NO: The Network Operator which has the commercial relationship with
32、the subscriber and is responsible for billing the subscriber. Secondary NO: A Network Operator that has a commercial relationship with the PNO, by which the SNO provides services to subscribers of the PNO. The relationship could support the seamless handover of services to and from the PNO. ETSI ETS
33、I TR 122 912 V15.0.0 (2018-07)63GPP TR 22.912 version 15.0.0 Release 153.2 Abbreviations For the purposes of the present document, the abbreviations given in TR 21.905 1 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbrevia
34、tion, if any, in TR 21.905 1. PNO Primary Network Operator SNO Secondary Network Operator 4 Introduction Currently, all UEs have 3GPP access capability (e.g. GSM, GPRS, UMTS); an increasing number of UEs also have WLAN capability. In the future, other types of access may be incorporated into UEs (e.
35、g. WiMax). The network selection procedure for 3GPP access is defined in 3GPP specifications; the procedure for Interworked WLAN (I-WLAN) is also defined. There are no specifications for how the UE should choose non-3GPP access types, however. In some cases, it may be required for the UE to choose a
36、 non-3GPP access type either initiated by the HPLMN or the end user or automatically by the UE. The mechanism for doing this has not been defined and so this study will consider what mechanisms should be in place to cover this. Also, how the UE should behave when there is no preference expressed sho
37、uld be considered. 5 Example Use Cases 5.1 Use Case 1 An operator has a commercial relationship with a 3rdparty content provider that has its own WLAN network that gives access to a server containing specialised content and services (e.g. music download). The operator arranges with the 3rdparty that
38、 its subscribers can access the 3rdparty over its WLAN network to complement its own products and services available over GSM/3G. Authentication and authorisation in the WLAN network is independent of authentication and authorisation in the 3GPP network. Figure 5.1: Use Case 1 The connection to the
39、3rdParty is temporary while the content or other service is delivered. The UE remains registered on the PLMN while also connected to the WLAN access. The facility to set an operator (and user) defined preference for the selection of this WLAN network is required. UserPLMN3rdPartyContent3GPP Authenti
40、cation3rdParty AuthenticationCommercialRelationshipWLAN3GPPUnique IDPLMN IDTemporaryPermanentETSI ETSI TR 122 912 V15.0.0 (2018-07)73GPP TR 22.912 version 15.0.0 Release 155.2 Use Case 2 A corporate customer needs frequent access to the companys data services. In the office it is preferred to use th
41、e company WLAN network for speed and convenience of data access; when away from the office, the customer will use 3G access to connect to the office data systems. When in the office, there are many other WLAN hotspots in the surrounding area and they can also be seen by the users device. The other W
42、LAN hotspots are irrelevant to the user, therefore, an easy method of identifying, and selecting (automatically or manually) the preferred WLAN access is required where it is available and the preferred operator 3G access otherwise. Figure 5.2: Use Case 2 The connection to the corporate systems coul
43、d be maintained for a long period, however, the UE should remain registered on the PLMN while also accessing the corporate systems. The facility to set an operator (and user) defined preference for the selection of the access to the corporate network is required. 5.3 Use Case 3 A customer would like
44、 to use his home WLAN while in the house to access services and content over the Internet. While away from home, the customer could use public WLAN access points and/ or 3G for access to these services. The customers home operator (the PNO) could be the provider of the services available over the ho
45、me WLAN or these could be offered by a 3rdparty with or without a commercial agreement with the home operator The case where the operator offers network-based services such as voice over the home WLAN/ADSL network is out of scope of this work. Authentication and authorisation functions in the WLAN n
46、etworks are independent of authentication and authorisation in the 3GPP network. PLMNOfficeSystemsWLAN3GPPUserCorporate AuthenticationCorporate IDPLMN IDTemporaryPermanentPLMNHome 3GPP3GPP AuthenticationHome IDPLMN IDTemporaryPermanentETSI ETSI TR 122 912 V15.0.0 (2018-07)83GPP TR 22.912 version 15.
47、0.0 Release 15Figure 5.3: Use Case 3 An easy method of selecting (automatically or manually) the home/ public WLAN network or 3G access according to availability is required. The UE should remain registered on the PLMN while also accessing the services over the home WLAN network. 5.4 Use Case 4 A cu
48、stomer of a 3GPP network operator (the PNO) would like to use a non-3GPP access type to access services if 3GPP access coverage is lost. A secondary, non-3GPP Network Operator (a SNO), with its own WLAN access network is available and can connect to the PNO. In this case, the services continue to be
49、 provided by the Core Network of the 3GPP Network Operator via the SNO. A method of switching to the non-3GPP access point is needed. The method must allow return from the non-3GPP access point to 3G access. The method must take into account user and operator preferences. It must be possible to select an operator/service provider through the non-3GPP access point. Need to consider trusted and non-trusted cases. 5.5 Use Case 5 A customer has a UE which is capable of accessing two different non-3GPP RATs. A mechanism is needed to determine which non-3G
