User's Manual

Confidential
LTE eNB System Description v2.0 1
Copyright © 2017, All Rights Reserved.
Chapter 1 Samsung LTE
System Overview
Introduction to Samsung LTE System
Samsung LTE system supports 3GPP LTE (hereinafter, LTE) based services.
The LTE is a next generation wireless network system which solves the
disadvantages of existing 3GPP mobile systems allows high-speed data service at
low cost regardless of time and place.
Samsung LTE system supports Orthogonal Frequency Division Multiple Access
(OFDMA) for downlink, Single Carrier (SC) Frequency Division Multiple Access
(FDMA) for uplink, and scalable bandwidths for various spectrum allocation and
provides high-speed data service. It also provides high-performance hardware for
improved system performance and capacity and supports various functions and
services.
Samsung LTE system is based on the Rel-8 and Rel-9 standards of LTE 3rd
Generation Partnership Project (3GPP).
Samsung LTE system consists of evolved UTRAN Node B (eNB), Evolved Packet
Core (EPC) and LTE System Manager (LSM).
The eNB exists between EPC and User Equipment (UE). It establishes wireless
connections with UE and processes packet calls according to LTE air interface
standard. The eNB manages UE in connected mode at the Access Stratum (AS)
level. The EPC is the system, which is located between eNB and Packet Data
Network (PDN) to perform various control functions. The EPC consists of
Mobility Management Entity (MME), Serving Gateway (S-GW), and PDN
Gateway (P-GW). The MME manages UE in idle mode at the Non-Access Stratum
(NAS) level. Also, S-GW and P-GW manages user data at the NAS level and
interworks with other networks.
The LSM provides man-machine interface; manages the software, configuration,
performance, and failures. Also, it acts as a Self-Organizing Network (SON)
server.
The figure below shows the functional distinctions between eNB of E-UTRAN,
MME, S-GW, and P-GW according to the 3GPP standard. The eNB has a layer
structure and EPC has no layer.