1、 ETSI TS 122 468 V14.0.0 (2017-03) LTE; Group Communication System Enablers for LTE (GCSE_LTE) (3GPP TS 22.468 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 122 468 V14.0.0 (2017-03)13GPP TS 22.468 version 14.0.0 Release 14Reference RTS/TSGS-0122468ve00 Keywords LTE ETSI 650 Route
2、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 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.or
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7、. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks
8、 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 TS 122 468 V14.0.0 (2017-03)23GPP TS 22.468 version 14.0.0 Release 14Intellectual Property Rights IPRs essential or
9、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 SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essen
10、tial, 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 investigation, including IPR searches, has been carried out by ETSI. No guarantee c
11、an 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 document may refer to technical specifications or reports using their 3GPP identities,
12、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.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shal
13、l“, “shall not“, “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 not“ are NOT allowed in ETSI deliverables except when used
14、in direct citation. ETSI ETSI TS 122 468 V14.0.0 (2017-03)33GPP TS 22.468 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Ab
15、breviations . 7g34 Overview (informative) 7g34.1 Service description of a Group Communication service 7g34.2 Relation to Group Communication System Enablers . 7g35 Functional requirements . 8g35.1 Overall requirements 8g35.1.1 High level requirements 8g35.1.2 Performance 8g35.1.3 Service continuity
16、. 9g35.1.4 Resource efficiency. 9g35.1.5 Scalability . 9g35.1.6 Security requirements for Group Communication 9g35.2 Group handling . 10g35.2.1 Creation, modification, and deletion of GCSE Groups . 10g35.2.2 Geographical scope of GCSE Groups . 10g35.3 Group Communication . 10g35.3.1 Group Communicat
17、ion setup requirements 10g35.3.2 Services to the Group Member . 11g35.3.3 Group Member requests of the system . 11g35.3.4 Priority and pre-emption of GCSE communication 11g35.3.5 Services provided during an on-going Group Communication 11g35.3.6 User perception of Group Communication . 12g36 Interac
18、tion with other services and functions . 12g36.1 Emergency calling 12g36.2 Interaction with ProSe 12g3Annex A (informative): Use cases . 13g3A.1 Speech Group Call use case . 13g3A.1.1 Description . 13g3A.1.2 Pre-conditions . 13g3A.1.3 Service flows 13g3A.1.3.1 Service Flow 1 Joining a group . 13g3A.
19、1.3.2 Service Flow 2 Joining and leaving a group based on group operating area . 13g3A.1.3.3 Service Flow 3 Call start 13g3A.1.3.4 Service Flow 4 Call interruption 14g3A.1.3.5 Service Flow 5 Talking party changeover . 14g3A.1.3.6 Service Flow 6 Late Entry and mobility 14g3A.1.3.7 Service Flow 7 Call
20、 release 15g3A.1.3.8 Service Flow 8 Blocking of resources . 15g3A.1.4 Post-conditions . 15g3A.2 “See what I see“ use case . 15g3A.2.1 Description . 15g3ETSI ETSI TS 122 468 V14.0.0 (2017-03)43GPP TS 22.468 version 14.0.0 Release 14A.2.2 Actors . 15g3A.2.3 Pre-conditions . 16g3A.2.4 Service flows 16g
21、3A.2.5 Post-condition . 16g3A.3 Harmonized multi-agency use case 17g3A.3.1 Description . 17g3A.3.2 Actors . 17g3A.3.3 Pre-conditions . 17g3A.3.4 Service flows 17g3A.3.5 Post-condition . 18g3Annex B (informative): Group communication concept(s) 19g3Annex C (informative): Description of usage of GCSE_
22、LTE for public safety 21g3Annex D (informative): Change history . 22g3History 23g3ETSI ETSI TS 122 468 V14.0.0 (2017-03)53GPP TS 22.468 version 14.0.0 Release 14Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The contents of the present
23、 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 of release date and an increase in version number as follows: Version x.y.z w
24、here: 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, i.e. technical enhancements, corrections, updates, etc. z the third digit i
25、s incremented when editorial only changes have been incorporated in the document. Introduction To position LTE as technology for critical communications such as public safety, Group Communication is needed. Group Communication function complements its sibling communication feature of proximity-based
26、 services (ProSe). ETSI ETSI TS 122 468 V14.0.0 (2017-03)63GPP TS 22.468 version 14.0.0 Release 141 Scope The present document collects the requirements as relevant to improve the EPC and E-UTRAN for system enablers to the 3GPP system to support Group Communication over LTE for Public Safety and Cri
27、tical Communication. The US requirements as specified in NPSTC (Mission Critical Voice Requirements) 2, 3, 4, the TETRA + Critical Communications Association (TCCA) 8 and ITU 6, 7 inputs are taken as starting point. Other regional requirements may also be reflected in the work. The requirements are
28、worded in a way to easily accommodate future requirements from other regions or stakeholders. 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 publicat
29、ion, 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 reference implicitly refers
30、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 Recommended Minimum Technical Requirements to Ensure Nationwide Interoperability for the Nationwide Public Safety Broadband Network, Final Report, NPSTC BBWG,
31、 May 22, 2012. 3 Mission Critical Voice Communications Requirements for Public Safety, NPSTC BBWG, August 30, 2011. 4 Public Safety Broadband High-Level Statement of Requirements for FirstNet Consideration, NPSTC Report Rev B, June 13, 2012. 5 3GPP TS 22.101: “Service aspects; Service principles“. 6
32、 ITU-T Recommendation G.114 One-Way Transmission Time, May 2003. 7 ITU-T Recommendation Y.1541 Network Performance Objectives for IP-Based Services, December 2011 8 ETSI ETR 086: “Trans European Trunked Radio (TETRA) System; Technical Requirements Specification Part 1: Voice plus Data (V+D) systems“
33、, January 1994. 9 3GPP TS 22.278: “Service requirements for the Evolved Packet System (EPS)“. 3 Definitions and abbreviations 3.1 Definitions For the 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
34、 precedence over the definition of the same term, if any, in TR 21.905 1. Group Member: A user assigned to a GCSE Group. GCSE Group: A set of Group Members. ETSI ETSI TS 122 468 V14.0.0 (2017-03)73GPP TS 22.468 version 14.0.0 Release 14Receiver Group Member: A Group Member of a GCSE Group that has i
35、nterest expressed in receiving ongoing or future Group Communications of that GCSE Group. Transmitter Group Member: A Group Member of a GCSE Group that is authorized to transmit an ongoing or future Group Communications for that GCSE Group. Group Communication: Communication from Transmitter Group M
36、embers to Receiver Group Members. Group Communication System Enabler (GCSE): A 3GPP feature enabling an application layer functionality to provide Group Communication over E-UTRAN. Multipoint Service: A service used to distribute the same content to many UEs in a resource efficient way. 3.2 Abbrevia
37、tions 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 abbreviation, if any, in TR 21.905 1. CN Core Network GCSE Group Communication System Enabl
38、er GCSE_LTE Group Communication System Enabler over Long Term Evolution LMR Land Mobile Radio ProSe Proximity Services PTT Push to Talk RAN Radio Access Network TETRA TErrestrial Trunked Radio TCCA TETRA + Critical Communications Association 4 Overview (informative) 4.1 Service description of a Grou
39、p Communication service A Group Communication Service is intended to provide a fast and efficient mechanism to distribute the same content to multiple users in a controlled manner. As an example, the concept of group communications is used extensively in the operation of classical Land Mobile Radio
40、(LMR) systems used for, but not limited to, Public Safety organizations. At the moment, the primary use of a Group Communication Service in LMR is to provide “Push to Talk“ (PTT) functionality, so a Group Communication Service based on 3GPP architecture, using LTE radio technology, should enable PTT
41、 voice communications with comparable performance. The service should allow flexible modes of operation as the users and the environment they are operating in evolves. For example, the capabilities of LTE allow for broadband communication, so Group Communication Service is expected to support, voice
42、, video or, more general, data communication. Also LTE can allow users to communicate to several groups at the same time in parallel e.g. voice to one group, different streams of video or data to several other groups. The users of Group Communication Service are organised into groups; a user can be
43、member of more than one group. 4.2 Relation to Group Communication System Enablers The requirements listed in the present document shall serve as requirements to develop enablers; i.e. modular functions and open interfaces (e.g. a resource efficient distribution mechanism) that can be used to design
44、 Group Communication Services. This is to flexibly accommodate the different operational requirements on Group Communication Services that are expected to be different for various types of user groups (e.g. police or fire brigade), or from country to country. ETSI ETSI TS 122 468 V14.0.0 (2017-03)83
45、GPP TS 22.468 version 14.0.0 Release 145 Functional requirements 5.1 Overall requirements 5.1.1 High level requirements The ability to make use of the Group Communication System Enabler provided by the 3GPP system shall be enabled on a Group Member basis. The system shall provide a mechanism to indi
46、cate network support of Group Communication System Enabler to the UE. The UE shall have the ability to indicate the network support of Group Communication System Enabler to the user. Group Communication System Enabler shall support various media such as conversational type communication (e.g. voice,
47、 video) or streaming (e.g. video) or data (e.g. messaging) or a combination of them. The system shall be able to uniquely identify a GCSE group. The system shall be able to uniquely identify a Group Member within a GCSE group The system shall provide a mechanism to send a Group Communication to all
48、Receiver Group Members. Only Receiver Group Members of the GCSE Group shall be able to receive from that GCSE Group via Group Communication. The system shall be able to authorise a Group Member to become a Transmitter Group Member. A Transmitter Group Member shall be able to transmit to a GCSE Group
49、 that it is a member of, with or without being a Receiver Group Member of that GCSE Group. The interface between the GCSE client on the UE and the network shall be an open interface. Note 1: As GCSE Groups can be composed of users from different agencies in different territories using GCSE clients provided by different manufacturers it is essential that multi-vendor interworking is facilitated. The network shall provide a third party interface for Group Communication. This implies that the interface supports e.g. charging
