System Description

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SOL230 System Description v1.0 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, and 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 the LTE 3rd
Generation Partnership Project (3GPP).
Samsung LTE system consists of evolved UTRAN Node B (eNB), Evolved Packet
Core (EPC), and Small Cell Element Management System (EMS).
The eNB exists between an EPC and a User Equipment (UE). It establishes
wireless connections with the UE and processes packet calls according to LTE air
interface standard. The eNB manages the UE in connected mode at the Access
Stratum (AS) level.
The EPC is the system, which is located between an eNB and a 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. The S-GW and the P-GW manages user data at the NAS level and
interworks with other networks.
The Small Cell Management System (EMS) provides man-machine interface;
manages the software, configuration, performance, and failures. Also, it acts as a
Self-Organizing Network (SON) server.
The following figure shows the functional distinctions between the eNB of E-
UTRAN, and the MME, S-GW, and P-GW of EPC according to the 3GPP
standard. The eNB has a layer structure and the EPC has no layer.
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