Content for TR 23.768 Word version: 12.1.0
1 Scope p. 7
The present document captures the results of the study and evaluation of possible solutions for architectural enhancements to support Group Communication System Enablers for LTE (GCSE_LTE). The Stage 1 requirements for GCSE_LTE are defined in TS 22.468.
Specifically, GCSE_LTE covers the following aspects:
- Group Communication (GC) among entitled group members via E-UTRAN;
- Group Communication (GC) among entitled group members using E-UTRAN and members of the same group using ProSe communication paths via a ProSe UE-to-Network Relay;
- The relationship between ProSe and GCSE for GCs.
2 References p. 7
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 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]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 36.300: "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2".
[3]
TS 22.468: "Group Communication System Enablers for LTE (GCSE_LTE)".
[4]
TR 23.703: "Study on architecture enhancements to support Proximity Services (ProSe)".
[5]
TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".
[6]
Open Mobile Alliance: "OMA PoC System Description" v2.1.
[7]
RFC 4582 (November 2006): "The Binary Floor Control Protocol (BFCP)".
[8]
TS 23.246: "Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional description".
[9]
TS 24.147: "Conferencing using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3".
[10]
TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification".
[11]
TS 26.346: "Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs".
[12]
TS 33.246: "3G Security; Security of Multimedia Broadcast/Multicast Service (MBMS)".
[13]
TS 23.003: "Numbering, addressing and identification".
[14]
TS 36.304: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode".
3 Definitions and abbreviations p. 8
3.1 Definitions p. 8
For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
GCSE Group:
A set of members that are entitled to participate in a GC service.
Group Communication service ID:
A Group communication service identifier identifies the communication service among the group members.
Multipoint Service:
A service, which is offered to the GCSE AS and used to distribute the same Group Communication data to the UEs of a GCSE Group in a resource efficient way.
Multicast Delivery:
A delivery mode where the Group Communication data is delivered via shared network resources to multiple group members.
Unicast Delivery:
A delivery mode where the Group Communication data is delivered to a particular group member via resources dedicated to a group member.
3.3 Abbreviations p. 8
For the purposes of the present document, the abbreviations given in TR 21.905 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.
BM-SC
Broadcast Multicast - Service Centre
DL
Down Link
EMBMS
Evolved Packet System MBMS
GC
Group Communication
GCSE_LTE
Group Communication Service Enabler over LTE
GCSE AS
Group Communication Service Enabler Application Server
MBMS
Multimedia Broadcast/Multicast Service
MBSFN
MBMS over a Single Frequency Network
MOCN
Multi-Operator Core Network
MuSe
Multipoint Service
MTCH
Multicast Traffic Channel
ProSe
Proximity Services
PCRF
Policy and Charging Rules Function
PtP
Point to Point
PtM
Point to Multipoint
TMGI
Temporary Mobile Group Identity
