1、 ETSI TR 122 936 V14.0.0 (2017-03) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Multi-system terminals (3GPP TR 22.936 version 14.0.0 Release 14) TECHNICAL REPORT ETSI ETSI TR 122 936 V14.0.0 (2017-03)13GPP TR 22.936 version 14.
2、0.0 Release 14Reference RTR/TSGS-0122936ve00 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 la Sous-Prfecture de Grasse (06) N 7803/
3、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 versions of the present document shall not be modified without the prior
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8、 of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TR 122 936 V14.0.0 (2017-03)23GPP
9、TR 22.936 version 14.0.0 Release 14Intellectual 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 available for ETSI members and non-members, and can be found in ETSI
10、 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 i
11、nvestigation, 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. Foreword The present docum
12、ent 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 http:/webapp
13、.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 expression of provisions). “must“ and “must
14、 not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 122 936 V14.0.0 (2017-03)33GPP TR 22.936 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33
15、Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 5g34 Categories of multi system terminals . 6g34.1 Common characteristics . 6g34.2 Category 1 - Manual switching 6g34.3 Category 2 - Automatic switching by an overlay function . 6g34.4 Category 3 - Selection method of one syst
16、em to extended to another 6g34.4.1 Example A, extended PLMN list 6g34.4.2 Example B, extended PRL 6g34.5 Category 4 Multiple systems operational simultaneously . 7g35 Use cases 7g35.1 Roaming cases 7g35.2 Non-roaming cases . 7g36 Considerations for multi system terminals . 7g36.1 General categorizat
17、ion of usage . 7g36.2 Subscription aspects . 8g36.3 MMI aspects . 8g36.4 Charging aspects 8g36.5 Security aspects 8g36.6 Target time to select system . 8g36.7 System preference settings . 8g36.8 System selection 9g36.8.1 Overview 9g36.8.2 Switch-on or recovery from lack of coverage . 9g36.8.3 User r
18、eselection 9g36.8.4 System switching 9g37 Conclusion 10g37.1 Overview 10g37.2 General requirements for system selection . 10g3Annex A: Change history 11g3History 12g3ETSI ETSI TR 122 936 V14.0.0 (2017-03)43GPP TR 22.936 version 14.0.0 Release 14Foreword This Technical Report (TR) has been produced b
19、y ETSI 3rd Generation 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 identifying change
20、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 changes of substance
21、, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. Introduction In the past, operators within a country or a region deployed single system networks and, consequently, users got service from a
22、single system terminal. Multi mode terminals were sometimes deployed to maximise coverage, particularly during times of transition between radio access technologies (e.g. cdma/AMPS), but the same core network was always used. In the future it is likely that operators will operate more than one syste
23、m and the core networks will be different. This may happen either through choice or company merger/acquisition. There will be cases where operators have different systems in the same geographic area and cases where operators use different systems in different regions. It is also likely that there wi
24、ll be roaming agreements between operators of different systems. Therefore, the market for multi system terminals will increase and consideration is needed in 3GPP if new standardisation will be required or not. Leaving system selection unspecified could lead to differences between vendor implementa
25、tions. Whereas this may in itself not be a problem, it needs to be ensured that 3GPP specifications are followed by multi system terminals with 3GPP capability and that no harm to 3GPP networks is caused. ETSI ETSI TR 122 936 V14.0.0 (2017-03)53GPP TR 22.936 version 14.0.0 Release 141 Scope The pres
26、ent document studies the behaviour of a multi system terminal that supports both 3GPP and non-3GPP systems. Particular issues handled include, but are not restricted to: Whether the system selection or PLMN selection should take higher priority in a multi system terminal. Criteria for system change.
27、 Interaction between the users and the operators preferences. Support of automatic and manual system selection mode. Different methods of system selection and their impact on 3GPP specifications. Some areas for possible standardization, to ensure 3GPP compliance and protection of 3GPP networks. The
28、present document treats non-3GPP networks in a generic way but it applies mainly to the case of 3GPP2/3GPP compliant terminals. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific
29、 (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
30、reference implicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 22.011: “Service accessibility“. 3 Definitions and abbreviations 3.1 Definitions Multi mode terminal: Terminal which suppo
31、rts multiple access technologies and accesses 3GPP core network (e.g. GSM/UMTS). Multi system terminal: Terminal which supports both the 3GPP system and non-3GPP system(s). Non-3GPP system: Mobile telecommunications system, having non-MAP core network, with specifications which are outside the contr
32、ol or influence of 3GPP. 3GPP system: MAP core network and various access networks. 3GPP2 system: IS-41 core network and various cdma access network . Other definitions are given in 3GPP TR 21.905 1. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: PRL P
33、referred Roaming List GAIT GSM/ANSI-136 Interoperability ETSI ETSI TR 122 936 V14.0.0 (2017-03)63GPP TR 22.936 version 14.0.0 Release 14R-UIM Removable User Interface Module (a 3GPP2 abbreviation) Further abbreviations are given in 3GPP TR 21.905 1. 4 Categories of multi system terminals 4.1 Common
34、characteristics - 3GPP and non-3GPP system(s) in the same terminal. Benefit to the user Increased coverage area. Wider range of services Can use one terminal for both systems. 4.2 Category 1 - Manual switching - The user manually selects system. - Separate 3GPP and non-3GPP identities (e.g. USIM and
35、 R-UIM). - When in 3GPP system, terminal does not scan non-3GPP systems and vice versa. 4.3 Category 2 - Automatic switching by an overlay function - When in 3GPP system, terminal scans non-3GPP systems and vice versa. - Terminal does not suspend operation on a system while it scans for the other (i
36、.e. dual transceivers). - Scanning information is passed to an overlay function which decides if to change system. - System is changed by selecting USIM or R-UIM in the case of 3GPP2 depending on user and/or operators preferences. 4.4 Category 3 - Selection method of one system to extended to anothe
37、r 4.4.1 Example A, extended PLMN list - The 3GPP network selection mechanism could be extended to non-3GPP networks. - Non 3GPP entries (e.g. cdma2000, SSID) could be contained in the 3GPP Preferred PLMN+RAT List. Note 1: Significant work would be needed in 3GPP and GSM-A to allow non-3GPP network i
38、nformation to be contained in the PLMN list. However, one implementation specific solution may be for a dummy entry “switch to PRL” to be placed in the preferred PLMN list. 4.4.2 Example B, extended PRL - The 3GPP2 network selection mechanism could be extended to non-3GPP2 networks. - GSM/W-CDMA or
39、SSID information could be contained in the 3GPP2 PRL. Note 2: Work is being done in 3GPP2 on this method. ETSI ETSI TR 122 936 V14.0.0 (2017-03)73GPP TR 22.936 version 14.0.0 Release 144.5 Category 4 Multiple systems operational simultaneously - User can access the internet directly via WLAN while t
40、he terminal is connected to the cellular network at the same time. Note 1: While connected to the 3GPP network, the terminal will follow 3GPP specifications. - 3GPP and 3GPP2 parts of the terminal may be active at the same time (e.g. for different applications). 5 Use cases 5.1 Roaming cases Example
41、 1: Luke, who has a multi system terminal, uses the services of his 3GPP operator A. While on vacation in another country, the available networks are the 3GPP network of operator B, offering very basic 3GPP functionalities, and the non 3GPP network of operator C, offering equivalent services compare
42、d to operator A. Ideally, Luke would like his device to select the non-3GPP operator C to be able to take advantage of the similarity of services. If his device selects operator B, Luke can select operator C manually if he wishes. Example 2: Andrew, who has a multi system terminal, uses the services
43、 of his 3GPP operator A. While on vacation in another country, the available networks are the 3GPP network of operator B, offering a wide range of 3GPP functionalities, and the non 3GPP network of operator C, offering equivalent services compared to operators A and B. Ideally, Andrew would like his
44、device to select 3GPP operator B because services should generally work better in the same system (e.g. no transcoding). If his device selects operator C, Andrew can select operator B manually if he wishes. Example 3: Leia, who has a multi system terminal, uses the services of her 3GPP operator A. W
45、hile on vacation in another country, the available networks are the 3GPP network of operator B, and the non 3GPP network of operator C. Operator A and C have a commercial alliance. Therefore, operator A would prefer that the non 3GPP operator C will be selected. Leia can select operator B manually i
46、f she wishes. Example 4: Harry, who has a multi system terminal, uses the services of his 3GPP operator A. While on vacation in another country, the available networks are the 3GPP network of operator B, and the non 3GPP network of operator C. Operator A and C are in fact owned by the same company.
47、Therefore, operator A would like to be sure that the non 3GPP operator C will be selected. Harry can select operator B manually if he wishes. Note: In the above examples it is assumed that there are roaming agreements between operators A, B and C. 5.2 Non-roaming cases Example 5: Ana, who has a mult
48、i system terminal, uses the services of operator A. Operator A operates both 3GPP and a non-3GPP system in the same area. Operator A wishes to control when Ana uses each system for reasons of load sharing and to ensure that Ana gets the best possible user experience. Ana can manually select either s
49、ystem. Example 6: Paul, who has a multi system terminal, uses the services of operator A. Operator A operates a 3GPP system. Pauls terminal is capable of accessing the internet via WLAN (not I-WLAN), e.g. for web browsing and VoIP. Paul has a tariff with operator A that allows him to connect to the internet via WLAN and use the services of an ISP. 6 Considerations for multi system terminals 6.1 General categorization of usage Multi system terminals will be used: a) When an operator deploys more than one system in the same geographic area. E
