User's Manual

Ver.
CHAPTER 1. Samsung LTE System Overview
2600-00FKQFGA2
1.0
1.2 Samsung LTE Network Configuration
A Samsung LTE system consists of the eNB, LSM, and EPC. The Samsung LTE system
comprising multiple eNBs and EPCs (MME, S-GW/P-GW) is a subnet of the PDN, which
allows the User Equipment (UE) to access external networks. In addition, the Samsung
LTE system provides the LSM and self-optimization function for operation and
maintenance of eNBs.
The following shows the Samsung LTE system architecture.
Figure 2. Samsung LTE System Architecture
eNB
The eNB is located between the UE and EPC. It processes packet calls by connecting to the
UE wirelessly according to the LTE air standard. The eNB is responsible for transmission
and receipt of wireless signals, modulation and demodulation of packet traffic signals,
packet scheduling for efficient utilization of wireless resources, Hybrid Automatic Repeat
request (HARQ)/ARQ processing, Packet Data Convergence Protocol (PDCP) for packet
header compression, and wireless resources control.
In addition, the eNB performs handover by interworking with the EPC.
UE
UE
OFCS
PCRF
HSS
Uu
S1-U
S1-MME
EMS
CSM
eNB
eNB
EMS
LSM
OCS
EPC
S5/S8
Gx
S-GW
Sp
TL1
MME
P-GW
Gy
S11 S6a
Gz
Gz
S10
PDN
X2-C
X2-U
SNMP/FTP/UDP
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