TS 23.468
SA2
★
GCSE_LTE —
Group Communication System Enablers for LTE
use "3GPP‑Page" to get the Word version
use "ETSI‑search" to get the PDF version
for a better overview, the Table of Contents (ToC) is reproduced
use "ETSI‑search" to get the PDF version
for a better overview, the Table of Contents (ToC) is reproduced
V15.1.0 (PDF)
2019/09 33 p.
V14.0.0
2017/03 31 p.
V13.3.0
2015/12 32 p.
V12.7.0
2015/12 32 p.
WI Acronym: GCSE_LTE
Rapporteur: Mr. Liebhart, Rainer Nokia Networks
Rapporteur: Mr. Liebhart, Rainer Nokia Networks
The present document provides the stage 2 description for the 3GPP system provided enablers to support group communication services using E-UTRAN access.
The group communication system is represented by an Application Server (GCS AS) using the 3GPP system provided enablers for transferring its application signalling and for delivering application data, e.g. media data, to a group of UEs either
- over MBMS Bearer Services using the Broadcast Mode of MBMS; or
- over EPS Bearers; or
- over both MBMS and EPS bearer services.
full Table of Contents for TS 23.468 Word version: 15.1.0
1 Scope Word-p. 6
2 References
3 Definitions and abbreviations Word-p. 7
4 Architecture Model and Concepts
4.1 General Concept
4.2 Architectural Reference Model Word-p. 9
5 Functional Description and Information Flow
4.2.1 General
4.2.2 Non-roaming architecture Word-p. 10
4.2.3 Roaming architecture 
4.2.4 Architecture model using a ProSe UE-to-Network Relay for Public Safety [R13] Word-p. 12
4.3 Reference points
4.4 High level functions
4.5 Network Elements
4.2.4 Architecture model using a ProSe UE-to-Network Relay for Public Safety [R13] Word-p. 12
5.1 MB2: Interface between GCS AS and BM-SC
A Utilisation of the Group Communication Service Word-p. 29
B Change history Word-p. 32
5.1.1 General
5.1.2 MB2 Procedures Word-p. 15
5.2 Specific Usage of EPS Bearers for GCS
5.3 Service Continuity Word-p. 22
5.1.2 MB2 Procedures Word-p. 15
5.1.2.1 General
5.1.2.2 TMGI Management
5.1.2.2.1 General
5.1.2.2.2 TMGI Allocation Procedure
5.1.2.2.3 TMGI Deallocation Procedure Word-p. 16
5.1.2.2.4 TMGI allocation period expiry Word-p. 17
5.1.2.3 Activating and Deactivating an MBMS bearer
5.1.2.3.1 General
5.1.2.3.2 Activate MBMS Bearer Procedure
5.1.2.3.3 Deactivate MBMS Bearer Procedure Word-p. 19
5.1.2.4 Modify MBMS Bearer Procedure Word-p. 20
5.1.2.5 MBMS Delivery Status Indication Procedure Word-p. 21
5.1.2.3.3 Deactivate MBMS Bearer Procedure Word-p. 19
5.3.1 General
5.3.2 Switching from Unicast Delivery to MBMS Delivery
5.3.3 Switching from MBMS Delivery to Unicast Delivery Word-p. 23
5.4 Priority and Pre-emption for Group Communication
5.5 Charging Word-p. 28
5.6 Security
