1、 ETSI TS 122 079 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Support of Optimal Routeing (SOR); Service definition; Stage 1 (3GPP TS 22.079 version 15.0.0 Release 15) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOBIL
2、E COMMUNICATIONSRETSI ETSI TS 122 079 V15.0.0 (2018-07)13GPP TS 22.079 version 15.0.0 Release 15Reference RTS/TSGS-0122079vf00 Keywords GSM,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 As
3、sociation 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 p
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14、en 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 refer
15、ence 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“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in c
16、lause 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 122 079 V15.0.0 (2018-07)33GPP TS 22.079 version 15.0.0 Release 15Contents Intellectual Property Rights 2
17、g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 5g34 Description of Optimal Routing . 6g35 Functional requirements . 6g35.1 General . 6g35.2 Normal operation 6g35.2.1 A is a fixed subscriber or a mobile subscriber who may not bene
18、fit from OR . 7g35.2.2 A is a mobile subscriber who may benefit from OR . 8g35.2.2.1 Description of the call routing . 8g35.2.2.2 Call scenarios handled in OR Phase 1 . 8g35.3 Exceptional procedures or unsuccessful outcome 13g35.3.1 Non-support of SOR in the VPLMN of the caller 13g35.3.2 Non-support
19、 of SOR in the HPLMN of the B subscriber . 13g35.3.3 Non support of SOR in the VPLMN of the B subscriber 13g35.3.4 Calls to special mobile network numbers . 13g36 Interactions of Optimal Routing with Supplementary Services . 13g36.1 Call Forwarding 13g36.2 Call Barring 13g36.3 Call Transfer . 13g36.
20、4 Call Deflection . 13g36.5 Advice of Charge 13g37 Interactions of Optimal Routing with Operator Determined Barring (ODB). 14g38 Interactions of Optimal Routing with CAMEL 14g3Annex A (informative): Change history . 15g3History 16g3ETSI ETSI TS 122 079 V15.0.0 (2018-07)43GPP TS 22.079 version 15.0.0
21、 Release 15Foreword This Technical Specification 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 docum
22、ent, 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 first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change contr
23、ol. y the second digit is incremented for all 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 TS 122 079 V15.0.0 (2018-07)53GPP TS 22.079 version 15.0.0 Releas
24、e 151 Scope This Stage 1 description of the first phase of Support of Optimal Routing (SOR): - compiles the basic service requirements for SOR; - describes the interactions for Supplementary Services (SS) in order to cater for SOR; - refers to modifications to network features required by SOR. This
25、specification does not address the following: - There is no need for optimisation of the routing of calls originally directed to a fixed network subscriber, because the physical address of a fixed network terminating line cannot differ from its logical address. - SOR in non-PLMNs is not a subject of
26、 this TS, but might be possible by bilateral arrangement between PLMN operators and those non-PLMN operators. The purpose of SOR is to reduce the number of unnecessary inter-PLMN call legs. The first phase of SOR applies to: - OR for the benefit of the B party i.e. Mobile terminated calls with late
27、call forwarding to the home or visited country (scenarios 1 and 2), and optionally; - OR for the benefit of the A party, e.g. Mobile to mobile calls where both mobile subscribers are in the same country (scenarios 3 to 10). The complete set of scenarios included in the phase 1 of OR is presented in
28、the paragraph for normal procedures. All other scenarios are excluded from Phase 1 of OR. Note that Optimal Routing is applicable to national roaming situations, that is to calls directed to a mobile subscriber roaming in her home country, but registered in a PLMN different from her HPLMN. All furth
29、er call scenarios, including multiple call forwarding, are left to subsequent phases of SOR. Subsequent phases of SOR shall be backwards compatible with this first phase. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the prese
30、nt document. References are either specific (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
31、(including a GSM document), a non-specific 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“. 3 Definitions and abbreviations Administrative PLMN: The complete set of all functional e
32、ntities normally regarded as a single PLMN. Basic OR : Routeing of a call by the direct route when no forwarding occurs. Direct route: A call uses the direct route if it is routed from the serving network of the original calling party to the serving network of the ultimate called party without any i
33、ntermediate PLMN. ETSI ETSI TS 122 079 V15.0.0 (2018-07)63GPP TS 22.079 version 15.0.0 Release 15HPLMN route: A call uses the HPLMN route if the destination is deduced from the MSISDN of the called party. This forces the call to be routed via the HPLMN of the called party. HPLMN leg: The HPLMN leg i
34、s that part of the HPLMN route from the IPLMN to the HPLMN of the called party. IPLMN: An IPLMN is a PLMN which interrogates the HPLMN of a called party in order to determine the whereabouts of that party. Early Call Forwarding : Early Call Forwarding is Call Forwarding performed from the IPLMN befo
35、re the call has been extended to the VPLMN of the forwarding subscriber (i.e. Call Forwarding Unconditional and Conditional Call Forwarding on Not Reachable known at the IPLMN before extension of the call) Functional PLMN: For the purposes of this description the Administrative PLMN is divided into
36、functional PLMNs that represent different aspects of the Optimal Routeing functionality. Late Call Forwarding: Late Call Forwarding is Call Forwarding performed after the call has been extended to the VPLMN of the forwarding subscriber (i.e. Conditional Call Forwarding on Busy, Conditional Call Forw
37、arding on No Reply and Conditional Call Forwarding on Not Reachable detected in the VPLMN of the forwarding subscriber). Late Call Forwarding may be invoked in the IPLMN or in the VPLMN of the forwarding subscriber. Special mobile network number: For the purposes of this description special mobile n
38、etwork numbers are numbers belonging logically to a PLMN but not to a mobile subscriber. Examples are the customer service number or value added service numbers. Abbreviations are given in TR 21.905 1. 4 Description of Optimal Routing Support of Optimal Routing (SOR) is a network feature which enabl
39、es the calls directed to a mobile subscriber to be routed directly to the mobile subscribers actual location, or to her forwarded-to destination (instead of via the HPLMN or in the case of Late Call Forwarding via the VPLMN). The IPLMN handling the call shall decide whether or not to optimise the ro
40、uting of the call taking into account information provided by the called mobile subscribers HPLMN. For given subscribers, as a network option, the HPLMN may permit or deny OR on a per call basis. 5 Functional requirements 5.1 General SOR shall be provided for all circuit switched Telecommunication S
41、ervices, except emergency calls, Dedicated PADand Dedicated Packet Access (GPRS is for further study). The network feature shall be applied automatically for all calls except for those calls for which the HPLMN of the called party denies the optimal routing. 5.2 Normal operation In the first phase o
42、f SOR, the routes of calls will be optimised for the cases of OR being performed within a country or towards the country where the call would have been routed normally. Under all other circumstances, the basic call routing is applied: - If the IPLMN detects that basic OR cannot be applied, the IPLMN
43、 routes the call according to the dialled number. - If the IPLMN detects that OR for Late Call Forwarding cannot be applied, the Call Forwarding will be performed in the VPLMN of the forwarding subscriber. If the serving network of the ultimate destination supports SOR, the serving network of the ca
44、ller shall be able to indicate to the network visited by the ultimate destination that the call has been optimally routed and to indicate the originating PLMN of the optimally routed leg. ETSI ETSI TS 122 079 V15.0.0 (2018-07)73GPP TS 22.079 version 15.0.0 Release 15The complete set of scenarios inc
45、luded in phase 1 of SOR is described below. The notation used for the scenario diagrams is defined in figure 1. Traffic routeTraffic route of basic GSM routeing,not used for OROutput of call record informationInterrogationFunctional PLMN(e.g. IPLMN, VPLMN-B)Administrative PLMN, whichmay include twof
46、unctional PLMNsCall AttemptFigure 1: Notation used in scenario diagrams If one of those scenarios occurs, SOR shall be invoked. The assumptions taken are the following : - A subscriber A sets up a call to a mobile subscriber B, who may have forwarded her calls to a subscriber C. - The C subscriber m
47、ay be either a fixed subscriber or a mobile subscriber. If C is a mobile subscriber, the location of C taken into account in the following paragraphs is the location of HPLMN-C. 5.2.1 A is a fixed subscriber or a mobile subscriber who may not benefit from OR As the originating network does not have
48、the ability to interrogate the HPLMN of the B subscriber, the normal call handling is applied. Once the HPLMN of the B subscriber has the control of the call, the call may be optimised in the case of a forwarded call towards a party located in the Home Country of the B subscriber or in the country v
49、isited by the B subscriber. NOTE: - A may be in any country. - In the two following cases, the IPLMN is HPLMN-B. IPLMNHPLMN-BVPLMN-BACountry ZCountry YCCall record:Call forwarding recordOR flagCountry XScenario 1: OR for Late Call Forwarding, C is in the same country as HPLMN-B ETSI ETSI TS 122 079 V15.0.0 (2018-07)83GPP TS 22.079 version 15.0.0 Release 15NOTE: Call records shown in the figure are only for information IPLMNHPLMN-BVPLMN-BACountry ZCountry YCCall record:Call forwarding recordOR flagCountry XScenario 2: OR for Late Call Forwarding, C is in the same co
