Pictorial view of Key LTE/EPC specifications and the interfaces to which they apply.

1. General:
LTE/EPC Specifications 23.003 Identifiers
29.303 DNS
33.401 Security Stage 2&3
24.301 NAS HSS SPR PCC Stage 2: 23.203
Charging Stage 2: 32.240
S6a Unspecified Sp
29.214
S1-MME 29.272
PCRF Rx
36.410 General MME Operator
36.411 Layer 1
36.412 (Sig xport)
S11 29.212
S9 Services
S10 29.213 Sig Flow
36.413 (S1AP) Gx 29.215
36.133 RRM Reqds 29.274 GTPC
S1u Serving S5 SGi
UE eNB PDN GW Internet
GW
LTE-Uu 29.274 GTPC 29.061
36.304 Idle X2 36.410 General 29.281 GTPU Gz/Rf
36.306 Capability 36.411 Layer 1 Gy/Ro
36.314 Measurement 36.414 (Data xport) 32.251
23.122 Idle-NAS 29.281 GTPU Online Offline Bx Billing
36.420 General Charging Charging
Domain
36.201,211,213,214 PHY 36.421 Layer 1 Function Function
32.251
36.321 MAC 36.422 (Sig xport)
36.322 RLC 36.424 (Data xport)
36.323 PDCP 36.423 (X2AP)
36.331 RRC 29.281 GTPU
E-UTRAN Stage-2: Evolved Packet Core Stage 2: 23.401
36.300 Stage-3 Specification
Stage-2 Specification
Stage-1 Specification
Stage-1: 22.278
Link to get latest 3GPP specs per release: ftp://ftp.3gpp.org/Specs/latest
Link to find out what a spec covers: http://www.3gpp.org/Specification-Numbering
Irfan Ali
Irfan Ali 1

2. The 3GPP Process of Developing a New System/Feature/Service
STAGE-1 Low
Defines Service
requirements
STAGE-2 Level of
Defines architecture Detail
network elements &
high level flows
STAGE-3
Conformance
Defines protocols
Testing
(state m/c, High
Specifications
messages)
Timeline
• The process is applied to both “big features” e.g., LTE
and to smaller features, e.g., Emergency-call support in
LTE.
Irfan Ali
Irfan Ali Stages are defined in ITU-T Specification Recommendation I.130.
2
http://www.itu.int/rec/T-REC-I.130/en

3. The 3GPP Standards Process applied to LTE
STAGE-1
Defines service Level of
requirements Detail
STAGE-2
Defines architecture
TR 25.913 Requirements network elements & high
for evolved UTRA and level flows
UTRAN
• Rates: DL: 100 Mbps, UL: 50 STAGE-3
Mbps (for 20 MHz spectrum) Defines protocols
• Control plane latency (idle- (state m/c,
>active < 100 ms) TS 23.401 GRPS messages)
TS 22.278 Service Enhancements for E-UTRAN
requirements for the Access
Evolved Packet System
• Support of non-3GPP accesses Describes the overall LTE system
architecture
Large number of specs (key)
• Differentiated quality of
Service. TS 36.300 E-UTRA & E-UTRAN
• 36.331 Radio Resource Control
Overall Description • 24.301 Non Access Stratum (NAS)
• 24.274 Generic Tunneling Protocol
• Describes the Radio Access (GTP)
Network part of LTE • …
• …
• ,…
• …
2Q 2004 1Q 2005 March 2007 March 2008 Dec 2008 Timeline
Release 8
Irfan Ali
Irfan Ali Stages are defined in ITU-T Specification Recommendation I.130.
3
http://www.itu.int/rec/T-REC-I.130/en