enb hardware description

1. Jinyoung Paek
Distribution
EnglishED01

2. 2/25
Contents
Main Function of Unit
Specifications
Block Diagram
Digital Unit – UAMA, L9CA
RF Unit – L8HU
Cooling system
Clock Distribution
Alarm & Reset Structure
Interface & Configuration
RRH Installation

3. 3/25
Main Function of Unit
Digital Unit (DU)
Subscriber data traffic processing
Call processing, resource allocation and OAM
GTP, PDCP, OAM, RRC, RRM processing
Reception of the GPS signal and creation and supply of the clock
Fault diagnosis and alarm collection and control
Fast Ethernet/Gigabit Ethernet interface to backhaul
RLC, MAC/PHY processing
OFDMA/SC-FDMA channel processing
RF Unit (RU)
Up conversion/down conversion of frequency
High-power amplification of RF transmission signal
Suppression of out-of-band spurious wave emitted from RF Rx/Tx signal
Gain control of RF Rx/Tx signal
Rx/Tx RF signal from/to an antenna
Low noise amplification of band-pass filtered RF Rx signal
GTP : GPRS Tunneling Protocol

4. 4/25
Specifications(1/2)
Digital Unit spec.
Category Specification
Radio Technology TD-LTE Rel. 8/9
Channel Bandwidth 20MHz
Capacity Max. 3 channel cards / DU
Backhaul Interface
Gigabit Ethernet : 4 ports
(RJ-45 2 ports + SFP 2port)
Channel Card Capacity 1Carrier 3Sector(4x4) per 1 channel card
Input voltage -48V DC
Size(mm) (W x D x H) 434 x 385 x 88 (19” rack mountable)
Weight(kg) Under 12 kg
Power Consumption About 200 W (1Carrier/3Sector)
Cooling Forced Air Cooling
Temperature 0°C ~50°C
Humidity 10~90%

5. 5/25
Specifications(2/2)
RF Unit spec.
Category Specification
Capacity (max.) 4Tx4Rx, 1Carrier/1Sector (20MHz)
Operating Frequency 2300~2400 MHz
Channel Bandwidth 20MHz
RF Output Power (max.) 10W/path (40W/Unit)
Cooling Natural convection
Antenna port N-type female
Optic port LC/APC connector
Operating Temp. -40°C ~ 50°C
Humidity 5% ~ 95%
Input Power -48V DC
Power Consumption < 260W
Size
354mm (W) × 112mm (D) × 504mm (H)
Wall or poll mountable
Weight Under 20Kg

6. 6/25
Block Diagram
Rectifier control (RS-485/FE)
Power (-48 VDC)
UAMA
Analog 10 MHz
1PPS
UDA (9Rx/2TX)
UDE (FE)
Rectifier
FE/GE
Alarm/Control
CPRI Interface (Optic)
Clock
Backhaul
Data Traffic + Alarm/Control (Ethernet)
Index
L
8
H
U
L
8
H
U
L
8
H
U
L9CA
EPC
2.5 Gbps CPRI Interface
GPS
UADU

7. 7/25
Digital Unit - UADU (1/4)
UADU Description
Consists of UAMA and L9CA
Supports the optic CPRI
Item Quantity Description
UADU
UAMA 1
Universal platform type A Management board Assembly
- Main processor in the system
- Resource allocation/operation and maintenance
- Alarm collection and report to LSM
- Backhaul support (GE/FE)
- UADU FAN alarm handling
- Rectifier interface Connector
- Provides User Defined Ethernet (UDE) and User Defined
Alarm (UDA)
- GPS ANT Input
L9CA Max. 3
LTE eNB Channel card board Assembly
- Call processing and resource allocation
- OFDMA/SC-FDMA Channel Processing
- Interface between the L8HU and optic CPRI
- Support for optic interface with CPRI RRH (E/O, O/E
conversion in CPRI Mux)

8. 8/25
Interface
Digital Unit - UADU (2/4)
FANM
ACT GPS RST DBG
UDA BH0 BH1 UDE0 UDE1 EDBG REC BH2 BH3
1PPS A10M GPS
PWR
RTN PWR/ALM
L0 L1 L2 L3 L4 L5ACT RST DBG0 DBG1
A/F
-48 V EDBG
Unit Interface Description
PWR RTN/-48 V Power Input (RTN/-48 VDC)
FANM PWR/ALM Fan Module
UADU’s cooling fan
Dust filter A/F Dust filter

9. 9/25
Digital Unit – UAMA (3/4)
Interface
ACT GPS RST DBG
UDA BH0 BH1 UDE0 UDE1 EDBG REC BH2 BH3 1PPS A10M GPS
Unit Interface Description
UAMA ACT CPU Active LED
GPS UCCM Status LED
RST Reset Switch (CPU Chip Reset)
DBG SW Debug (UART, RS-232)
UDA User Defined Alarm (Rx: 9 port, Tx: 2 port), Mini Champ
BH0, BH1 Copper Backhaul (100/1000 Base-T), RJ-45
UDE0, UDE1 User Defined Ethernet (100 Base-T), RJ-45
EDBG SW Debug (100 Base-T), RJ-45
REC Rectifier, RS-485
BH2, BH3 1000 Base-LX/SX, SFP
1PPS Test Port 1PPS Output (from UCCM), SMA
A10M Test Port Analog 10 M Output (from UCCM), SMA
GPS GPS ANT Input (to UCCM), SMA

10. 10/25
Digital Unit – L9CA (4/4)
Interface
L0 L1 L2 L3 L4 L5 EDBGACT RST DBG0 DBG1
Unit Interface Description
L9CA ACT L9CA ACT LED
RST System reset
DBG0, DBG1 UART DSP Debug, USB
L0~5 L8HU IF (CPRI 4.0), Optic
EDBG SW Debug (UART, RS-232)

11. 11/25
RF Unit – L8HU(1/3)
RF Unit Description
The RRH is that integrates the transceiver, power amplifier, and filters in a single module.
Category Specification
Capacity (max.) 4Tx4Rx, 1Carrier/1Sector (20MHz)
Operating Frequency 2300 ~ 2400MHz
Channel Bandwidth 20MHz
RF Output Power (max.) 10W/path, 40W/unit
Cooling Natural convection
Operating Temp. -40°C ~ 50°C
Input Power -48VDC
Size
354mm (W) × 112mm (D) ×
504mm (H)
Weight Under 20kg
Installation Wall /pole
4T4R RRH
RRH : Remote Radio Head

12. 12/25
RF Unit – L8HU(2/3)
Power
Port
Debug
Access Port
Optic
Port
RF_ANT
Port_3
RF_ANT
Port_2
RF_ANT
Port_1
RF_ANT
Port_0
RET
Port
[Bottom View]
[Front View] [Right View]
[Top View]
[Left View]
143.5
354
370
504
520
112

13. 13/25
RF Unit – L8HU(3/3)
-48 V IN
OPTIC RET DEBUG
ANT_3 ANT_2 ANT_1 ANT_0
Interface Description
-48 V IN Power Input (-48 VDC)
OPTIC DADU interface, ODCP (LC type)
RET Remote Electrical Tilt (AISG 2.0)
DEBUG S/W debug, Mini USB
ANT_0~3 4Tx/4Rx, N-type female

14. 14/25
Cooling System
UADU
The UADU maintains the inside temperature of the shelf at an appropriate range using a set of
system cooling fans (FANM)
L8HU
The L8HU is designed with a natural cooling system that supports an outdoor environment with
no additional fan or heater
※ FANM is designed to control RPM automatically according to temperature..
Dust Filter is only included when inserting UADU at Indoor Open Rack
FANM Dust Filter
UADU : Universal platform type A Digital Unit
L8HU : LTE eNB remote radio Head Unit

15. 15/25
Synchronization
GPS synchronization
The UCCM receives the synchronization signals from the GPS and generates clocks and
distributes them within the UADU
Clock Generation &
Distribution UCCM
Control
GPS
UADUSYS(System Clock 30.72MHz)
SFN(System Frame Number)
PP2S(Even Clock)
Digital 10MHz
PP2X(Even Clock)
Analog 10MHz1PPS
Test Equipment
UCCM : Universal Core Clock Module

16. 16/25
Alarm and Reset Structure
Alarm and Reset
When an environmental fault occurs or H/W is mounted or unmounted, it is reported
using an alarm signal
All alarms are collected in the DU and reported to the management system, LSM
UAMA
L9CA
GPS Module (in UAMA)
L8HU #2
L8HU #0
: Reset
: Alarm
: Remote Pattern Reset
LSMC
B A
A
B
C

17. 17/25
Interface & Configuration(1/2)
RRH Cable
(Optic Cable-2.5Gbps)
Copper
Back-Haul
(2EA)
UDE
(2EA)
SW debug
Optic
Back-haul
(2EA)
UDA
1pps
Analog
10MHz
Rectifier IF
GPS Antenna
SW debug
LED
(GPS)
LED
(CPU)
Rectifier
Power cable
SW debug
(2EA)
Board
Reset
CPU State
LED
System
Reset
SW debug

18. 18/25
Interface & Configuration(2/2)
1 DU + 3 RRH Configuration
Supports 20MHz 4T4R 1carrier
3sectors
Two 2.5Gbps CPRI cables are
required for 20MHz 4T4R
configuration
g - sector
(4T4R TD-LTE)a - sector
(4T4R TD-LTE)
b - sector
(4T4R TD-LTE)

19. 19/25
RRH Installation – 1Sector Pole Mount
wall
RRU
RRU
RectifierRectifier

20. 20/25
RRH Installation – 1Sector Floor Mount

21. 21/25
RRH Installation – 1Sector Wall Mount
Wall
RRU
Rectifier

22. 22/25
RRH Installation – 3Sector Pole Mount
wall
RRU
RRU
RRU
RRU
RRU
RRU
RRU RRU
RRU

23. 23/25
RRH Installation – 3Sector Floor Mount
RRU
RRU
RRU
RRU
RRU
RRU

24. 24/25
RRH Installation – 3Sector Wall Mount
RRU
RRU
RRU
RRU
RRU
RRU