Other PLMN
PSTN
LTE User Plane Protocol Stack
APP
PDN
TCP/UDP
IP
IP Relay
Mc
Gp
SGi
Gc
S6b
PDCP
Gx P-GW
GTP-U
GTP-U
GTP-U
RLC
UDP/IP
UDP/IP
UDP/IP
UDP/IP
MAC
MAC
L2
L2
L2
L2
L1
L1
L1
L1
L1
L1
LTE-Uu
S5
S1-U
UE
S5/S8
eNodeB
PCRF
D
GTP-U
PDCP
RLC
GGSN
C
GMSC
Gi
Relay
S-GW
P-GW
LTE Control Plane Protocol Stack
S6a
NAS
Nc
Gn
MSC / VLR
S6d
S12 SGSN MSC / VLR
S10
PDCP
MME
S-GW
S3
Gs Iu-PS
SGSN
RRC
S11
S4
Nc
S1-AP
PDCP
SCTP
SCTP
RLC
IP
IP
MAC
L2
L2
L1
L1
L1
L1
LTE-Uu
S1-MME eNodeB
MME
LTE Channel Mapping
S1-MME X2
S1-AP
RLC
UE
Iu-CS eNodeB
RRC
MAC
MME
S1-U
Iur
NAS Relay
HSS
S16
SGi
Downlink
PCCH
BCCH
PCH
BCH
CCCH
Uplink DCCH
DTCH
CCCH
DCCH
RACH
UL-SCH
DTCH
RLC
LOGICAL CHANNELS
RNC
Iub
RNC
Iub
eNodeB DL-SCH
TRANSPORT CHANNELS
LTE-Uu HeNB-GW
NodeB
Uu
NodeB
S1-U
MAC
S1-U
DCI
TRAINING MANAGED SERVICES
S1-MME / S1-U
PD CC CC H
PBC H
PD SC SC H
PC FI FI CH CH
PH IC IC H
E-UTRAN eNB
HeNB
X2
EPC
eNB
S-GW
P-GW
Peer Entity
End-to-End Service EPS Bearer E-RAB Radio Radio Bearer Bearer
External Bearer
S5 Bearer S1 Bearer Bearer
PR AC AC H
PU SC SC H
PU CC CC H
PHY
PHYSICAL CHANNELS
DetachProcedure Delete all context (C-RNTI, Tracking Area ID, IP address)
Internet
X2 X2
CONTROL INFORMATION
UCI
LTE States
EPS Bearer Architecture
www.explanotech.com
[email protected]
HI
S1-U
S1-MME
S1-MME TECHNICAL CONSULTING
CFI
Attach Procedure I LTE_DETACHED (C-RNTI, Tracking Area ID, IP address) T Power ON
Power OFF LTE_ACTIVE OUT_OF_SYNCH
N R C e t e l e D
IN_SYNCH
LTE_IDLE S e
r ( C v ( E R i c x N e t T R e n I ) e q d e u d e
