1、 ETSI TR 122 953 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Multimedia priority service feasibility study (3GPP TR 22.953 version 15.0.0 Release 15) TECHNICAL REPORT ETSI ETSI TR 122 953 V15.0.0 (2018-07)13GP
2、P TR 22.953 version 15.0.0 Release 15Reference RTR/TSGS-0122953vf00 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
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9、TR 122 953 V15.0.0 (2018-07)23GPP TR 22.953 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 publicly available for
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14、 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
15、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 expression of provisions)
16、. “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 122 953 V15.0.0 (2018-07)33GPP TR 22.953 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 6g3
17、2 References 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 7g34 High-level requirements . 7g34.1 Priority Session origination 7g34.2 Priority Session establishment to called party 7g34.3 Priority Session progression . 7g34.4 Priority radio resource queuing 7g34.5 Pri
18、ority levels . 7g34.6 Invocation on demand 7g34.7 Applicability to telecommunications services 8g34.8 Multimedia Priority Service code/identifier . 8g34.9 Roaming . 8g34.10 Handover 8g34.11 Charging . 8g34.12 Queuing requests for bearer resources 8g34.13 Reversion from UTRAN to RAN . 8g35 Additional
19、 description of multimedia priority service . 8g35.1 Priority Session setup/invocation . 8g35.2 Priority session progression 9g35.3 Priority session establishment to called party . 9g35.4 Exception procedures or unsuccessful outcome . 9g36 Multimedia priority service gap analysis . 10g36.1 IP multim
20、edia subsystem (IMS) . 10g36.2 Summary of IMS capabilities . 10g36.3 Support for Multimedia Priority Service 11g37 Conclusion 11g3Annex A (informative): Use Cases 13g3Annex B (informative): Change history . 16g3History 17g3ETSI ETSI TR 122 953 V15.0.0 (2018-07)43GPP TR 22.953 version 15.0.0 Release
21、15Foreword This Technical Report 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
22、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 control. y the second
23、 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. Introduction This Technical Report (TR) presents the results of the feasibility study on Mu
24、ltimedia Priority Service. The intent of this feasibility study is to assess the ability of 3GPP specifications to meet high-level requirements identified for Multimedia Priority Service. This feasibility study consisted of a multi-step process, namely: - Identify high-level requirements for Multime
25、dia Priority Service. - Determine relevant 3GPP specifications for Multimedia Priority Service. - Perform a gap analysis to assess the ability of existing 3GPP specifications to meet the high-level Multimedia Priority Service requirements. As defined in this document, Multimedia Priority Service all
26、ows qualified and authorized users to obtain priority access to the next available radio channel on a priority basis before other PLMN users during situations when PLMN congestion is blocking session establishment attempts. In addition, Multimedia Priority Service supports priority sessions an “end-
27、to-end“ priority basis. Multimedia Priority Service is intended to be used by qualified and authorized users, i.e., emergency service personnel, only during times of emergency situations and network congestion. Access to Multimedia Priority Service is limited to key personnel and those with leadersh
28、ip responsibilities and is not intended for use by all emergency service personnel. This is to ensure that emergency service personnel cannot “take over“ the network and deny other non-emergency service subscribers a reasonable level of service. Multimedia Priority Service providers should adhere to
29、 uniform, nationwide operating access procedures. Multimedia Priority Service can provide significant benefits for public safety. There may be times during emergencies when non- Service Users will be unable to obtain access to their wireless services (because Multimedia Priority Service personnel ar
30、e using the channels); nevertheless, the benefits of Multimedia Priority Service outweigh any inconvenience to non-Service Users. It is assumed that Multimedia Priority Service will be available at all times in equipped markets in both the HPLMN and VPLMN within a country where the PLMN provider is
31、offering the service. The capability for pre-emption could be supported, with the option to turn it on/off depending on regional requirements. Multimedia Priority Service is applicable to both GERAN and UTRAN and is activated on a per session basis using Multimedia Priority Service procedure describ
32、ed in clause 4.8. ETSI ETSI TR 122 953 V15.0.0 (2018-07)53GPP TR 22.953 version 15.0.0 Release 15Multimedia Priority Service, supported by the 3GPP system set of services and features, is one element in the ability to deliver calls of a high priority nature from mobile to mobile networks, mobile to
33、fixed networks, and fixed to mobile networks. ETSI ETSI TR 122 953 V15.0.0 (2018-07)63GPP TR 22.953 version 15.0.0 Release 151 Scope This Technical Report (TR) presents the results of the feasibility study on Multimedia Priority Service. The intent of this feasibility study is to assess the ability
34、of 3GPP specifications to meet high-level requirements identified for Multimedia Priority Service. This feasibility study consisted of a multi-step process, namely: - Identify high-level requirements for Multimedia Priority Service. - Determine relevant 3GPP specifications for Multimedia Priority Se
35、rvice. - Perform a Gap Analysis to assess the ability of existing 3GPP specifications to meet the high-level Multimedia Priority Service requirements. Additional functionalities not documented in this TR are considered outside the scope of this TR. Such additional functionality may be on a network-w
36、ide basis, nation-wide basis or particular to a group of users The Multimedia Priority Service is intended to be utilised for both Voice and Data in the Packet-switched (PS) domain and the IP Multimedia Subsystem (IMS). The Multimedia Priority Service is intended to interwork with external networks
37、to provide an end-to-end service. Therefore, service interactions with external networks are considered within the scope of this document, although the specification of these interactions may be in other standards. If this occurs, a reference to that specification is made. 2 References The following
38、 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 number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. F
39、or 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 document in the same Release as the present document. 1 3GPP TS 21.905: “Vocabulary for 3GPP Spe
40、cifications“. 2 3GPP TS 22.228: “Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1“. 3 3GPP TS 23.228: “IP Multimedia Subsystem (IMS); Stage 2“. 4 3GPP TS 24.229: “Internet Protocol (IP) multimedia call control protocol based on Session Initiation P
41、rotocol (SIP) and Session Description Protocol (SDP); Stage 3“. 5 3GPP TS 23.002: “Network architecture“. 6 3GPP TR 22.952: “Priority Service Guide“. 7 IETF RFC 4412: “Communications Resource Priority for Session Initiation Protocol (SIP)“. 8 3GPP TR 22.950: “Priority Service feasibility study“. 3 D
42、efinitions and abbreviations Refer to 1 for definitions and abbreviations used in this document that are not defined below. 3.1 Definitions Service User: Subscriber to Multimedia Priority Service ETSI ETSI TR 122 953 V15.0.0 (2018-07)73GPP TR 22.953 version 15.0.0 Release 153.2 Abbreviations MPS Mul
43、timedia Priority Service 4 High-level requirements The following clauses describe the high-level requirements to support Multimedia Priority Service. These high-level requirements are used as a basis for the gap analysis described in Clause 6. 4.1 Priority Session origination A session shall receive
44、 priority ingress treatment (priority access to voice or traffic channels) for session origination, when the session is setup by a Service User using the multimedia priority service procedure described in clause 4.8. 4.2 Priority Session establishment to called party A session shall receive priority
45、 egress treatment (priority access to voice or traffic channels) for session delivery to the terminating resource/user (e.g., called party), when the session is setup by a Service User using the priority service procedure described in clause 4.8. 4.3 Priority Session progression The Service User sha
46、ll receive priority session treatment/progression through the mobile network(s). A priority session should be given higher priority over normal sessions in the originating mobile network, the interconnected networks and the terminating network. 4.4 Priority radio resource queuing Multimedia Priority
47、 Service assumes a signalling channel is available. When a Multimedia Priority Service session encounters a “no radio available“ condition in the session path involving an ingress or egress air-interface, or both, and, - at session origination, and upon recognition of the Multimedia Priority Service
48、 code, the Multimedia Priority Service session request is queued in the cell serving the calling party and processed for the next available radio channel in that cell in accordance with the callers priority level and session initiation time. - at session termination upon recognition of a priority se
49、ssion indication in an incoming session request, the Multimedia Priority Service session request is queued in the cell serving the called party and processed for the next available radio channel in that cell in accordance with the sessions priority level and request arrival time. 4.5 Priority levels A Service User shall be assigned one of n priority levels. Priority levels are defined as 1, 2, 3, , n , with 1 being the highest priority level and n being the lowest priority level. 4.6 Invocation on demand Multimedia Priority Service is invoked only
