1、 ETSI TS 122 468 V15.0.0 (2018-07) LTE; Group Communication System Enablers for LTE (GCSE_LTE) (3GPP TS 22.468 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 122 468 V15.0.0 (2018-07)13GPP TS 22.468 version 15.0.0 Release 15Reference RTS/TSGS-0122468vf00 Keywords LTE ETSI 650 Route
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13、dorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities
14、, 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 “sh
15、all“, “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 use
16、d in direct citation. ETSI ETSI TS 122 468 V15.0.0 (2018-07)33GPP TS 22.468 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2
17、Abbreviations . 7g34 Overview (informative) 7g34.1 Service description of a Group Communication service 7g34.2 Relation to Group Communication System Enablers . 7g35 Functional requirements . 7g35.1 Overall requirements 7g35.1.1 High level requirements 7g35.1.2 Performance 8g35.1.3 Service continuit
18、y . 8g35.1.4 Resource efficiency. 8g35.1.5 Scalability . 9g35.1.6 Security requirements for Group Communication 9g35.2 Group handling . 9g35.2.1 Creation, modification, and deletion of GCSE Groups . 9g35.2.2 Geographical scope of GCSE Groups . 10g35.3 Group Communication . 10g35.3.1 Group Communicat
19、ion setup requirements 10g35.3.2 Services to the Group Member . 10g35.3.3 Group Member requests of the system . 10g35.3.4 Priority and pre-emption of GCSE communication 10g35.3.5 Services provided during an on-going Group Communication 11g35.3.6 User perception of Group Communication . 11g36 Interac
20、tion with other services and functions . 11g36.1 Emergency calling 11g36.2 Interaction with ProSe 11g3Annex 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.
21、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
22、 release 14g3A.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 V15.0.0 (2018-07)43GPP TS 22.468 version 15.0.0 Release 15A.2.2 Actors . 15g3A.2.3 Pre-conditions . 15g3A.2.4 Service flows 16g
23、3A.2.5 Post-condition . 16g3A.3 Harmonized multi-agency use case 16g3A.3.1 Description . 16g3A.3.2 Actors . 16g3A.3.3 Pre-conditions . 17g3A.3.4 Service flows 17g3A.3.5 Post-condition . 17g3Annex B (informative): Group communication concept(s) 18g3Annex C (informative): Description of usage of GCSE
24、for public safety 20g3Annex D (informative): Change history . 21g3History 22g3ETSI ETSI TS 122 468 V15.0.0 (2018-07)53GPP TS 22.468 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document a
25、re 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 where: x the
26、 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 is increment
27、ed when editorial only changes have been incorporated in the document. Introduction To position 3GPP radio as technology for critical communications such as public safety, Group Communication is needed. Group Communication function complements its sibling communication feature of proximity-based ser
28、vices (ProSe). ETSI ETSI TS 122 468 V15.0.0 (2018-07)63GPP TS 22.468 version 15.0.0 Release 151 Scope The present document collects the requirements as relevant to improve the 3GPP system to support Group Communication over LTE for Public Safety and Critical Communication. The US requirements as spe
29、cified 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 worded in a way to easily accommodate future re
30、quirements 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 publication, edition number, version number, etc.) or n
31、on-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 to the latest version of that document in the s
32、ame 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, May 22, 2012. 3 Mission Critical Voice Communi
33、cations 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 ITU-T Recommendation G.114 One-Way Transmissio
34、n 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“, January 1994. 9 3GPP TS 22.278: “Service requ
35、irements 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 precedence over the definition of the same ter
36、m, if any, in TR 21.905 1. Group Member: A user assigned to a GCSE Group. GCSE Group: A set of Group Members. Receiver Group Member: A Group Member of a GCSE Group that has interest expressed in receiving ongoing or future Group Communications of that GCSE Group. ETSI ETSI TS 122 468 V15.0.0 (2018-0
37、7)73GPP TS 22.468 version 15.0.0 Release 15Transmitter 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 Members to Receiver Group Members. Group Communi
38、cation System Enabler (GCSE): A 3GPP feature enabling an application layer functionality to provide Group Communication. Multipoint Service: A service used to distribute the same content to many UEs in a resource efficient way. 3.2 Abbreviations For the purposes of the present document, the abbrevia
39、tions 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 Enabler LMR Land Mobile Radio ProSe Proximity Services PTT Push t
40、o Talk RAN Radio Access Network TETRA TErrestrial Trunked Radio TCCA TETRA + Critical Communications Association 4 Overview (informative) 4.1 Service description of a Group Communication service A Group Communication Service is intended to provide a fast and efficient mechanism to distribute the sam
41、e 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 (LMR) systems used for, but not limited to, Public Safety organizations. At the moment, the primary use of a Group Communication
42、Service in LMR is to provide “Push to Talk“ (PTT) functionality, so a Group Communication Service based on the 3GPP system should enable PTT voice communications with comparable performance. The service should allow flexible modes of operation as the users and the environment they are operating in e
43、volves. For example, the capabilities of the 3GPP system allow for broadband communication, so Group Communication Service is expected to support, voice, video or, more general, data communication. Also the 3GPP system can allow users to communicate to several groups at the same time in parallel e.g
44、. 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 member of more than one group. 4.2 Relation to Group Communication System Enablers The requirements listed in the present document shall
45、 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 Group Communication Services. This is to flexibly accommodate the different operational requirements on Group Communication Services th
46、at are expected to be different for various types of user groups (e.g. police or fire brigade), or from country to country. 5 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 s
47、hall be enabled on a Group Member basis. ETSI ETSI TS 122 468 V15.0.0 (2018-07)83GPP TS 22.468 version 15.0.0 Release 15The system shall provide a mechanism to indicate network support of Group Communication System Enabler to the UE. The UE shall have the ability to indicate the network support of G
48、roup Communication System Enabler to the user. Group Communication System Enabler shall support various media such as conversational type communication (e.g. voice, 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 GCS
49、E 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 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 that it is a member of, with or without being a Receiver Group M
