1、 ETSI TR 122 953 V14.0.0 (2017-03) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Multimedia priority service feasibility study (3GPP TR 22.953 version 14.0.0 Release 14) TECHNICAL REPORT ETSI ETSI TR 122 953 V14.0.0 (2017-03)13GP
2、P TR 22.953 version 14.0.0 Release 14Reference RTR/TSGS-0122953ve00 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
3、 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 versions of the present document shall not be modi
4、fied without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. U
5、sers of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please se
6、nd your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permissio
7、n of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ET
8、SI logo are Trade Marks 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 122 953
9、V14.0.0 (2017-03)23GPP TR 22.953 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, a
10、nd 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 server (https:/ipr.etsi.org/). Pursuant to th
11、e 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, essential to the present document. For
12、eword 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 f
13、ound 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 provis
14、ions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 122 953 V14.0.0 (2017-03)33GPP TR 22.953 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scop
15、e 6g32 References 6g33 Definitions and abbreviations . 6g33.1 Definitions 7g33.2 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.
16、5 Priority 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 . 9g35 Addit
17、ional description of multimedia priority service . 9g35.1 Priority Session setup/invocation . 9g35.2 Priority session progression 9g35.3 Priority session establishment to called party . 9g35.4 Exception procedures or unsuccessful outcome . 10g36 Multimedia priority service gap analysis . 11g36.1 IP
18、multimedia subsystem (IMS) . 11g36.2 Summary of IMS capabilities . 11g36.3 Support for Multimedia Priority Service 11g37 Conclusion 11g3Annex A (informative): Use Cases 13g3Annex B (informative): Change history . 16g3History 17g3ETSI ETSI TR 122 953 V14.0.0 (2017-03)43GPP TR 22.953 version 14.0.0 Re
19、lease 14Foreword This Technical Report (TR) has been produced by 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
20、, 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 control.
21、 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. Introduction This Technical Report (TR) presents the results of the feasibilit
22、y study on Multimedia 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 requirement
23、s for Multimedia 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 Priorit
24、y Service allows 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 sess
25、ions an “end-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
26、with leadership 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 sho
27、uld adhere to 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
28、 personnel are 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
29、 provider is 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 proc
30、edure described in clause 4.8. ETSI ETSI TR 122 953 V14.0.0 (2017-03)53GPP TR 22.953 version 14.0.0 Release 14Multimedia 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 network
31、s, mobile to fixed networks, and fixed to mobile networks. ETSI ETSI TR 122 953 V14.0.0 (2017-03)63GPP TR 22.953 version 14.0.0 Release 141 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
32、 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 Multimedia Priority Service. - Determine relevant 3GPP specifications for Multimedi
33、a Priority Service. - 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 o
34、n a network-wide 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 exter
35、nal networks 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
36、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 number, etc.) or non-specific. For a specific reference, subsequent revisions do
37、 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 document in the same Release as the present document. 1 3GPP TS 21.905: “Vocabulary
38、 for 3GPP Specifications“. 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
39、 Initiation Protocol (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 feasibilit
40、y study“. 3 Definitions and abbreviations Refer to 1 for definitions and abbreviations used in this document that are not defined below. ETSI ETSI TR 122 953 V14.0.0 (2017-03)73GPP TR 22.953 version 14.0.0 Release 143.1 Definitions Service User: Subscriber to Multimedia Priority Service 3.2 Abbrevia
41、tions MPS Multimedia 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
42、shall receive 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 rec
43、eive priority 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 Ser
44、vice User shall 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 Multim
45、edia Priority 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 Pri
46、ority Service 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
47、a priority session 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 Pr
48、iority 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 when requested and an idle voice
49、or traffic channel required for an origination request is not available. ETSI ETSI TR 122 953 V14.0.0 (2017-03)83GPP TR 22.953 version 14.0.0 Release 14If an idle voice or traffic channel is available when Multimedia Priority Service is requested, the origination request is allowed to proceed normally without delay. Invocation of Multimedia Priority Service at ingress access (origination), during session progression (end-to-end), or egress access (termination) is considered complete when one of the following occurs: - A radio (voice or traffic) ch
