LTE eNB System Description Radio Access Network Describes an overview of the Samsung system, working, and all major functionalities. Document Version 2.
© 2017 SAMSUNG Electronics Co., Ltd. All Rights Reserved. The contents of this document/presentation contain proprietary information that must be kept confidential. No part of this document shall be photocopied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means whether, electronic, mechanical, or otherwise without the prior written permission of SAMSUNG Electronics Co., Ltd.
Confidential Contents Preface vi Conventions in this Document ........................................................................................................ vi New and Changed Information ...................................................................................................... vii Revision History .............................................................................................................................. vii Organization of This Document ...........................
Confidential List of Figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Functional Distinctions of E-UTRAN and EPC ................................................................................... 2 Samsung LTE System Architectures .........
Confidential List of Tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Key Specifications ........................................................................................................................... 24 Input Power .................................................................................................................................... 24 Dimensions and Weight .......................................................
Confidential Preface This description describes the characteristics, features and structure of the Samsung LTE eNB. Conventions in this Document Samsung Networks product documentation uses the following conventions. Symbols Symbol Description Indicates a task. Indicates a shortcut or an alternative method. Provides additional information. Provides information or instructions that you should follow to avoid service failure or damage to equipment.
Confidential Preface New and Changed Information This section describes information that has been added/changed since the previous publication of this manual. Technical contents changes. Revision History The following table lists all versions of this document. Document Number Product/Software Version Document Version Publication Date Remarks 2600-00KGZQGA2 LTE eNB 1.0 April 2017 First Version 2600-00KGZQGA2 LTE eNB 2.0 April 2017 - LTE eNB System Description v2.
Confidential Preface Organization of This Document Section Title Description Chapter 1 Samsung LTE System Overview Introduction to Samsung LTE System Samsung LTE Network Configuration Intersystem Interface Chapter 2 LTE eNB Overview Introduction to system Main functions Specifications Chapter 3 System Structure Hardware structure Software structure Chapter 4 Message Flow Appendix Acronyms This appendix lists acronyms used in this document.
Confidential Preface Personal and Product Safety Proposition 65 (US Only) State of California Proposition 65 Warning (US only) WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. California USA Only This Perchlorate warning applies only to primary CR (Manganese Dioxide) Lithium coin cell batteries in the product sold or distributed ONLY in California USA. Perchlorate Material-special handling may apply. See www.dtsc.ca.
Confidential 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.
Confidential Chapter 1 Samsung LTE System Overview Figure 1. Functional Distinctions of E-UTRAN and EPC eNB The eNB is a logical network component of Evolved UTRAN (E-UTRAN), which is located on access side in LTE system. The eNBs can be interconnected with each other by X2 interface. The eNBs are connected by S1 interface to Evolved Packet Core (EPC). The wireless protocol layer of eNB is divided into layer 2 and layer 3.
Confidential Chapter 1 Samsung LTE System Overview Protects and verifies the integrity of control plane data Transmits data including sequence number related function Removes data and redundant data based on a timer The RRC layer performs mobility management within the wireless access network, maintaining and control of Radio Bearer (RB), RRC connection management, and system information transmission, and so on.
Confidential Chapter 1 Samsung LTE System Overview Samsung LTE Network Configuration Samsung LTE system consists of eNB, LSM, and EPC. Also, it comprising multiple eNBs and EPCs (MME, S-GW/P-GW) is a subnet of PDN, which allows User Equipment (UE) to access external networks. In addition, Samsung LTE system provides LSM and self-optimization function for operation and maintenance of eNBs. The following figure shows Samsung LTE system architecture: Figure 2.
Confidential Chapter 1 Samsung LTE System Overview resources, Hybrid Automatic Repeat Request (HARQ)/ARQ processing, Packet Data Convergence Protocol (PDCP) for packet header compression, and wireless resources control. In addition, eNB performs handover by interworking with EPC. EPC The EPC is a system, which is located between eNB and PDN. The subcomponents of EPC are MME, S-GW and P-GW, Multimedia Broadcast/Multicast Service Gateway (MBMS GW).
Confidential Chapter 1 Samsung LTE System Overview policies differentiated by service flow, or creates the policy rules that can be applied commonly to multiple service flows. The P-GW includes Policy and Charging Enforcement Function (PCEF), which allows application of policy rules received from PCRF to each service flow. Online Charging System (OCS) The OCS collects online charging information by interfacing with S-GW and PGW.
Confidential Chapter 1 Samsung LTE System Overview Protocol Stack between NEs The inter-NE protocol stack of the eNB is as follows: Protocol Stack between UE and eNB The user plane protocol layer consists of PDCP, RLC, MAC, and PHY layers. The user plane is responsible for transmission of user data (e.g. IP packets) received from the upper layer. In user plane, all protocols are terminated in eNB.
Confidential Chapter 1 Samsung LTE System Overview Figure 4. Protocol Stack between eNB and S-GW User Plane Figure 5. Protocol Stack between eNB and MME Control Plane Inter-eNB Protocol Stack The two eNBs are connected physically through FE and GE method, and the connection specification should satisfy LTE X2 interface. The following figure shows the inter-eNB user plane protocol stack: LTE eNB System Description v2.0 Copyright © 2017, All Rights Reserved.
Confidential Chapter 1 Samsung LTE System Overview Figure 6. Inter-eNB User Plane Protocol Stack The following figure shows the control plane protocol stack: Figure 7. Inter-eNB Control Plane Protocol Stack Protocol Stack between eNB and LSM The FE and GE are used for the physical connection between eNB and LSM, and connection specifications must satisfy FTP/SNMP interface. The following figure shows the user plane protocol stack between eNB and LSM: LTE eNB System Description v2.
Confidential Chapter 1 Samsung LTE System Overview Figure 8. Interface Protocol Stack between eNB and LSM Protocol Stack between eNB and MCE Server The eNB must provide the interface for the interoperation with the MCE server. GE is used for physical connection between the eNB and MCE server. The connection specification must satisfy the STCP interface. Figure 9.
Confidential Chapter 1 Samsung LTE System Overview Figure 10. Protocol Stack between MCE Server and MME Protocol Stack between MCE Server and LSM GE is used for physical connection between the LSM and MCE server. The connection specification must satisfy the FTP/SNMP/UDP interface. The following diagram shows the interface protocol stack between the MCE server and LSM. Figure 11. Protocol Stack between MCE Server and LSM LTE eNB System Description v2.0 Copyright © 2017, All Rights Reserved.
Confidential Chapter 2 LTE eNB Overview Introduction to System In LTE system, eNB is located between UE and EPC. The eNB provides mobile communications services to subscribers according to LTE air interface standard. The eNB transmits/receives radio signals to/from UE and processes the modulation and demodulation of packet traffic signals. The eNB is also responsible for packet scheduling and radio bandwidth allocation and performs handover via interface with EPC.
Confidential Chapter 2 LTE eNB Overview The RRH is not a standalone device; it operates interfacing with CDU. The RRH is highly flexible in its installation, and helps with setting up a network in a variety of configurations depending on the location and operation method. Easy Installation The optic interface component that interfaces with CDU and RF signal processing component is integrated into RRH, which becomes a very small and very light single unit.
Confidential Chapter 2 LTE eNB Overview Main Functions The main functions of LTE eNB are as follows: Physical Layer Processing Call Processing Function IP Processing SON Function Interfacing with Auxiliary Devices Easy Operation and Maintenance In case of availability and provision schedule of the features and functions described in the system manual, refer to separate documentations.
Confidential Chapter 2 LTE eNB Overview In addition, when all sub-carriers are divided for multiple users, eNB can select and assign to each subscriber a sub-carrier with the most appropriate features using the OFDMA scheme, thus to distribute resources efficiently and increase data throughput. In case of uplink SC-FDMA, which is similar to OFDMA modulation and demodulation, a Discrete Fourier Transform (DFT) is applied to each subscriber in the modulation at the transmitting side.
Confidential Chapter 2 LTE eNB Overview system, MBSFN reference signal of MBSFN sub-frame in addition to the cellspecific reference signal and UE-specific reference signal used by the existing unicast. These both reference signals are used to estimate the downlink physical channel by inserting the reference symbols that can be recognized by the reception layer MBSFN reference signal. The MBSFN reference signal is provided in 15 MHz subcarrier spacing in case of extended CP to antenna port number 4.
Confidential Chapter 2 LTE eNB Overview In particular, Modulation Coding Scheme (MCS) is used for changing the modulation method and channel coding rate according to the channel status. If channel environment is good, MCS increases the number of transmission bits per symbol using a high-order modulation, such as 256 QAM. If channel environment is bad, it uses a low-order modulation, such as QPSK and a low coding rate to minimize channel errors.
Confidential Chapter 2 LTE eNB Overview However, if different UEs in neighbor cells use the same resource, interference may occur. This occurs more seriously between UEs located on the cell edge, resulting in serious degradation at cell edge. A scheme used to relieve such inter-cell interference problem on the cell edge is ICIC.
Confidential Chapter 2 LTE eNB Overview Admission Control (AC) The eNB provides capacity-based admission control and QoS-based admission control for a bearer setup requested from EPC so that the system is not overloaded. Capacity-based admission control There is a threshold for the maximum number of connected UEs (new calls/handover calls) and bearers that can be allowed in eNB. Call admission is determined depending on whether the connected UEs and bearers exceed the thresholds.
Confidential Chapter 2 LTE eNB Overview IP Processing IP QoS The eNB can provide the backhaul QoS when communicating with EPC by supporting the Differentiated Services (DiffServ). The eNB supports 8 classes of DiffServ and mapping QoS between services classes of the user traffic received from MS and DiffServ classes. In addition, eNB supports mapping the services classes based on Differentiated Services Code Points (DSCP) to the 802.3 Ethernet MAC service classes.
Confidential Chapter 2 LTE eNB Overview The detailed functions are as follows: Self-Configuration o Self-configuration of Initial Physical Cell Identity (PCI) o Self-configuration of initial neighbor information o Self-configuration of initial Physical Random Access Channel (PRACH) information Self-Establishment o Automatic IP address acquisition o Auto OAM connectivity o Automatic software and configuration data loading o Automatic S1/X2 setup o Self-test Self-Optimization PCI au
Confidential Chapter 2 LTE eNB Overview resource considering the neighbor cells. The operation for optimizing parameters related to the RACH is for estimating the RACH resources, such as time resource and subscriber transmission power required for random access, that change depending on time, and for optimizing the related parameters. Mobility Load Balancing (MLB) The MLB function monitors the cell’s load.
Confidential Chapter 2 LTE eNB Overview The eNB also logs the access successes and failures for CLI, login history, and so on. Highly-Secured Maintenance The eNB supports the Simple Network Management Protocol (SNMP) and SSH File Transfer Protocol (SFTP) for security during communications with LSM, and Hypertext Transfer Protocol over SSL (HTTPs) and Secure Shell (SSH) during communications with the console terminal.
Confidential Chapter 2 LTE eNB Overview Specifications Key Specifications The key specifications of eNB are as follows: Table 1. Key Specifications Category Specification Technology 3GPP Rel. 13 Duplex type FDD Operating Frequency DL: 746 to 756 MHz UL: 777 to 787 MHz Channel Bandwidth 10 MHz 4Tx/4Rx, 2Tx/4Rx or 2Tx/2Rx per RRH CDU-RRH Interface Max. 36 Optic CPRI Capacity Max. 12 cells @ 10/20MHz 4Tx/4Rx, 2Tx/4Rx or 2Tx/2Rx Max. 18,000 RRC connected UEs Max.
Confidential Chapter 2 LTE eNB Overview Table 3. Dimensions and Weight Category Specifications Dimensions (W × D × H, mm) Weight (kg) CDU 434 × 385 × 88 RRH 320 × 320 × 151 CDU 15 or less (based on full configuration) RRH Approx. 17 GPSR Specifications The following table shows the specifications of LTE eNB’s GPS Receiver (GPSR): Table 4. GPSR Specifications Category Specifications Received Signal from GPS GPS L1 Signal Accuracy/Stability (ppm) 0.
Confidential Chapter 2 LTE eNB Overview Item RFD01P-13A Operating Temperature (°C) -40~55 (without solar load) Operating Humidity 5~100 % RH, condensing, not to exceed 30g/㎥ absolute humidity Altitude (m) -60~1,800 (Telcordia GR-63-CORE) Earthquake Telcordia Earthquake Risk Zone4 (Telcordia GR-63CORE) Vibration Office Vibration (Section 4.4.4) Transportation Vibration (Section 4.4.5) Noise Fanless (natural convection cooling) EMC FCC Title 47 CFR Part 15 Safety UL 60950-1 2nd Ed.
Confidential Chapter 3 System Structure Hardware Structure The LTE eNB is the system that consists of Cabinet DU (CDU) which is a common platform DU, and Remote Radio Heads (RRH) which is an RU. CDU The CDU is connected to RRH through CPRI, and it can provide up to 4 carrier/3 sector service. The following figure shows the configuration of LTE eNB: Figure 12. Internal Configuration of eNB R R H (0) R R H (1) R R H (2) 9.8 Gbps CPRI Interface GPS CDU R R H (3) ...
Confidential Chapter 3 System Structure and filter. It sends and receives traffic, clock information, and alarm/control messages to and from LCC4. It has 4Tx/4Rx, 2Tx/4Rx or 2Tx/2Rx configurations with optic CPRI support. Each RRH is connected an optic CPRI; up to 12 RRHs can be connected to LCC4. The CDU is the multi-board type DU in which LMD1 that carries out the main processor function, network interface function, and clock creation and distribution function.
Confidential Chapter 3 System Structure The LMD1, LTE main processor of eNB plays role as the highest layer. It is responsible for communication path configuration between UE and EPC, Ethernet Switching functionality for internal eNB, and System OAM. Also, it manages entire hardware and software status within eNB, allocates/manages resources, and collect/report the alarm status information to LSM (LTE System Manager).
Confidential Chapter 3 System Structure 10GE interface The LCC4 provides a 10GE interface to support UL CoMP between DUs. FANM-C4A The FANM-C4A is the system’s cooling fan used to maintain the internal CDU shelf temperature. With this fan, the system can operate normally when the outside temperature of CDU shelf changes. RRH (LTE FDD, 700 MHz) The RRH is installed outdoor by default with a natural cooling convection system.
Confidential Chapter 3 System Structure Figure 14. RRH Configuration (RFD01P-13A) In downlink path, RRH performs O/E conversion for the baseband signals, which is received from CDU via the optic CPRI. The converted O/E signals are converted again into analog signals by the DAC. The frequency of those analog signals is converted upward through the modulator and those signals are amplified into high-power RF signals through the power amplifier.
Confidential Chapter 3 System Structure Figure 15. RET Interface LSM (SNMP Manager) Antenna (AISG interface) CDU R E T RRH (0) LCC4 M o t o r RET Relay RET Controller R E T RRH (1) M o t o r RET Relay R E T RRH (2) M o t o r RET Relay CPRI . . . Power Antenna Antenna Antenna Antenna Antenna Antenna Antenna Antenna Antenna Antenna Antenna Antenna . . . Power Supply The following figure shows the type of power supply to eNB and connection points: LTE eNB System Description v2.
Confidential Chapter 3 System Structure Figure 16. Power Supply Configuration Rectifier Rectifier -48 V DC (-40.5~-57 V DC) CDU PDPM EMI Filter -48 V DC (-38~-57 V DC) UADB L M D 1 L C C 4 L C C 4 L C C 4 F A N M C 4 A R R H R R H R R H (0) (1) (2) The power for LMD1 and LCC4-B1As in CDU is supplied through the Power Distribution Panel Module (PDPM) and UADB, a backboard. Each board uses the power by converting -48 V DC provided into the power needed for each part on the board.
Confidential Chapter 3 System Structure Figure 17. Cooling Structure of CDU FANM-C4A Air Filter RRH The RRH is designed to discharge heat effectively through natural convection cooling without an additional cooling device. External Interface External Interfaces of LMD1 The following shows the interfaces of LMD1. Figure 18. LMD1 External Interface STS CLK DBG CLK0 CLK1 UDA BH0 ETH LMT ALM BH1 BH2 GNSS Table 8.
Confidential Chapter 3 System Structure SILK Description Quantity Connector Type BH2 BH2 Status LED 1 LED PIPE External Interfaces of LCC4 The following shows the interfaces of LCC4. Figure 19. LCC4 External Interface STS DBG L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 SRIO 10GE Table 9. LCC4 Unit Description SILK Description Quantity Connector type DBG CPU Debug port RS-232 1 port USB L0~L11 CPRI Interface port between DU and RU SMF CPRI 2.
Confidential Chapter 3 System Structure Figure 20. RFD01P-13A External Interface ANT2 ANT3 ANT1 RET ANT4 UDA L0 L1 DC_PWR SYS OPT ANT RET Table 10. RRH External Interface (RFD01P-13A) I/O Name Interface Connector Type Comments Antenna Port RF [OFDMA/SC-FDMA] 4.3-10 (Plus) female x 4 - DU/RU interface Optic [CPRI 4.2] defaults speeds 9.8Gbps SFP (inner) Push-pull type (outer) Duplex, single mode, 2 ports, 20km RET AISG 2.2 IEC 60130-9 Ed 3.0 Circular 8 pin - TMA AISG 2.
Confidential Chapter 3 System Structure Software Structure Basic Software Structure The software of eNB is divided into three parts: Kernel Space (OS/DD) Forwarding Space (NPC, NP) User Space (MW, IPRS, CPS, OAM) The following figure shows eNB software structure: Figure 21. eNB Software Structure Operating System (OS) The OS initializes and controls the hardware devices and ensures that software is ready to run on the hardware devices.
Confidential Chapter 3 System Structure Kernel Manages the operation of multiple software processes and provides various primitives to optimize the use of limited resources. RFS: Stores and manages the binary files, libraries, and configuration files necessary for running and operating the software by File-system Hierarchy Standard 2.2 (FHS).
Confidential Chapter 3 System Structure Access Control List (ACL) MAC filtering IP Packet forwarding IP fragmentation and reassembly Link aggregation VLAN termination ACL (Access Control List) Middleware (MW) The MW ensures seamless communication between OS and applications on various hardware environments.
Confidential Chapter 3 System Structure IPSS: Software that performs the security functions for the IP layer. It is responsible for filtering based on the IP address, TCP/UDP port number, and protocol type. DHCP: Software block that performs the automatic IP address allocation function. It is responsible for obtaining an IP address automatically by communicating with DHCP server.
Confidential Chapter 3 System Structure X2 interfacing eNB Common Management Block (ECMB) The ECMB performs call processing function such as the system information transmission and eNB overload control for each eNB and cell. It operates on the master OAM board.
Confidential Chapter 3 System Structure M3AP function SFN SYNC function EMCB statistics processing MCE troubleshooting CPS SON Agent Block (CSAB) The CSAB supports the SON function, which is performed in eNB CPS. It operates on the master OAM bard. The major functions of CSAB are as follows: Mobility robustness optimization RACH optimization Mobility load balancing GPRS Tunneling Protocol Block (GTPB) The GTPB is the user plane call processing function of eNB.
Confidential Chapter 3 System Structure The major functions of PDCB are as follows: Header compression or decompression (ROHC only) Transmitting user data and control plane data PDCP sequence number maintenance DL/UL data forwarding at handover Ciphering and deciphering for user data and control data Control data integrity protection Timer-based PDCP SDU discarding Radio Link Control Block (RLCB) The RLCB is the user plane call processing function of eNB.
Confidential Chapter 3 System Structure OAM Blocks The Operation And Maintenance (OAM) is responsible for operation and maintenance in eNB. The OAM is configured with OSAB, PM, FM, CM, SNMP, SwM, TM, Web-EMT, and CLI. Figure 23.
Confidential Chapter 3 System Structure Fault Management (FM) The FM performs fault and status management functions on eNB’s hardware and software. It applies filtering to a detected fault, notifies the management system, and reflects the fault severity and threshold changes in the fault management. Also, it operates on the master OAM board and call processing board.
Confidential Chapter 3 System Structure independently and transmits a response. Processing a private MIB When receiving a request for a private MIB object, the SNMP does not process it independently; it transmits the request to the corresponding internal subagent. Then, SNMPD receives a response from the subagent and transmits it to the manager. Soft Ware Management (SwM) The SwM downloads and runs the package for each board under the file list downloaded during the preloading procedure.
Confidential Chapter 3 System Structure Web-EMT operates on the master OAM board. The main functions of Web-EMT are as follows: Web server function Interoperating with other OAM blocks for processing command Command Line Interface (CLI) The CLI is a block to interface with a target CLI when it is connected to a console terminal in the SSH method. The CLI software block processes CLI command and shows the result. The CLI operates on the master OAM board.
Confidential Chapter 4 Message Flow Data Traffic Flow Sending Path The user data received from EPC passes through the network interface module and is transmitted through Ethernet switch to CDU. The transmitted user data goes through baseband-level digital processing before being configured for CPRI, and then E/O converted. The converted signal is transmitted through the optic cable to the remote RRH. The RRH performs O/E conversion for a received optic signal.
Confidential Chapter 4 Message Flow Network Sync Flow The eNB uses GPS and IEEE1588v2 for synchronization. Clock module receives synchronization signal from the GPS, creates and distributes clocks. For IEEE1588v2, a processor receives IEEE1588v2 packet from backhaul, and generate clock through PLL and clock module. Supported PTP profiles are as below: IEEE1588v2 unicast negotiation mode (phase) IEEE1588v2 unicast negotiation mode (frequency) ITU-T G.8265.1 (frequency) ITU-T G.8275.
Confidential Chapter 4 Message Flow Alarm Type Description Applicable Function Fail Alarm Fault alarm due to software/hardware problems defined as ‘Function Fail’ LCC4-B1A Power Fail Alarm Fault alarm due to power problems LCC4-B1A Deletion Alarm System report alarm due to hardware mount/dismount LCC4-B1A UDA Alarm that the operator wants to provide LMD1-J1A RF Unit Alarm RF unit alarm RRH Reset command is executed via LSM and transmitted to LMD1.
Confidential Chapter 4 Message Flow Loading Flow The processors and devices of the system can be downloaded through Loading procedure from LSM software executables, data, and other elements, which are required to perform their functions. During the system initialization procedure, Loading the system is performed. Loading is also involved when a specific board is mounted in the system, when a hardware reset is carried out, or when the operator of an upper management system restarts a specific board.
Confidential Chapter 4 Message Flow Operation and Maintenance Message Flow The operator can check and change status of eNB through the management system. To accomplish this, eNB provides the SNMP agent function, and LSM operator can carry out the operation and maintenance functions of eNB remotely through the SNMP. Moreover, operator can carry out maintenance function based on Web-EMT in the console terminal using web browser.
Confidential Chapter 4 Message Flow protocol internally. The following figure shows the Web-EMT interface: Figure 29. Web-EMT Interface Through Web-EMT, the operator can reset or restart eNB or its internal boards, view and change the configuration and operation parameter values, monitor the system status and faults, carry out diagnostic functions, and so on.
Confidential Chapter 4 Message Flow Fault Management The CLI checks whether there are any faults with the processors and various devices of eNB. Also, it provides the operator with the location and each fault logs. Since CLI can display both of the hardware and software faults, the operator can know all faults that occur in eNB.
Confidential Appendix Acronyms 3GPP 256 QAM AC ACL ADC AKA AISG AM AMBR ANR ARQ AS BGP BSS C&M CC CDD CDU CLI CM CoS CP CPLD CPRI CPS CS CSAB CSL CSM DAC DBMS DD DDC DFT DHCP DiffServ DL DL-SCH DSCP DTM LTE eNB System Description v2.0 Copyright © 2017, All Rights Reserved.
Confidential Appendix Acronyms DU DUC DUS ECCB ECMB ECS EDS eMBMS EMC EMI EMS eNB ENS E/O EPC EPS E-UTRAN FANM FE FHS FM FPGA FTP GBR GE GERAN GPRS GPS GPSR GTP GTPB GTP-U GUI GW HARQ HAS HO HSS HTTP HTTPs ICIC IDFT IETF LTE eNB System Description v2.0 Copyright © 2017, All Rights Reserved.
Confidential Appendix Acronyms IP IPRS IPSS IPv4 IPv6 IR LCC4 LMD1 LNA LSM LTE MAC MACB MBMS GW MBR MBSFN MCS MDS MFS MIB MIMO MLB MMC MME MSC MSS MU MW NAS NE NP NPC NR NRT OAM OCNS OCS O/E OFCS OFDM OFDMA OS OSAB OSPF LTE eNB System Description v2.0 Copyright © 2017, All Rights Reserved.
Confidential Appendix Acronyms OSS PAPR PCEF PCI PCRF PDCB PDCP PDN PDPM PDU P-GW PLER PM PMIP PP2S PRACH PRB PSS QCI QoS QPSK RACH RB RB RET RF RFS RLC RLCB RMI RO ROHC RRC RRH RRM RU LTE eNB System Description v2.0 Copyright © 2017, All Rights Reserved.
LTE eNB System Description Document Version 2.0 © 2017 Samsung Electronics Co., Ltd. All rights reserved.
