enodeb hardware basic principle 49
TRANSCRIPT
LTE_FDD_eNB_B_03 eNodeB Hardware Basic Principle
Course Objects:
·Be familiar with the ZXSDR Base Station software and hardware
structure
·Know the ZXSDR Base Station boards function
·Know the ZXSDR Base Station cables structure
·Know the ZXSDR Base Station networking and dimensioning
Contents
1 Overview.....................................................................................................................................................1
1.1 ZTE Distributed Base Station Solution.............................................................................................1
1.2 Product Location in LTE Wireless Network.....................................................................................3
1.3 Product Overall Appearance..............................................................................................................4
1.4 Product Characteristics......................................................................................................................5
1.5 Functions...........................................................................................................................................7
1.6 Technical Indices...............................................................................................................................8
1.6.1 ZXSDR B8200 L200 Technical Indices.................................................................................8
1.6.2 ZXSDR R8882 L268 Technical Specifications....................................................................11
2 System Structure......................................................................................................................................15
2.1 Hardware Structure..........................................................................................................................15
2.2 Software Structure...........................................................................................................................16
3 Boards.......................................................................................................................................................19
3.1 Overview.........................................................................................................................................19
3.2 CC Board.........................................................................................................................................19
3.2.1 CC Board Function...............................................................................................................19
3.2.2 CC Board Front Panel..........................................................................................................20
3.2.3 CC Board Panel Indicators...................................................................................................21
3.2.4 CC Board Panel Interface.....................................................................................................22
3.2.5 CC Board Button..................................................................................................................23
3.3 BPL Board.......................................................................................................................................23
3.3.1 BPL Board Function.............................................................................................................23
3.3.2 BPL Board Front Panel........................................................................................................23
i
3.3.3 BPL Board Panel Indicators.................................................................................................23
3.3.4 BPL Panel Interfaces............................................................................................................24
3.3.5 BPL Board Button................................................................................................................25
3.4 SA Board.........................................................................................................................................25
3.4.1 SA Board Function...............................................................................................................25
3.4.2 SA Board Front Panel...........................................................................................................25
3.4.3 SA Board Panel Indicators...................................................................................................25
3.4.4 SA Board Panel Interfaces....................................................................................................26
3.5 PM Board........................................................................................................................................26
3.5.1 PM Board Function..............................................................................................................26
3.5.2 PM Board Front Panel..........................................................................................................26
3.5.3 PM Board Panel Indicators...................................................................................................27
3.5.4 PM Board Panel Interfaces...................................................................................................27
3.5.5 PM Board Button..................................................................................................................27
3.6 FAN Module...................................................................................................................................28
3.6.1 FAN Module Function.........................................................................................................28
3.6.2 FAN Module Front Panel.....................................................................................................28
3.6.3 FAN Module Panel Indicators..............................................................................................28
4 Cables........................................................................................................................................................31
4.1 ZXSDR B8200 L200 Cables...........................................................................................................31
4.1.1 DC Power Cable...................................................................................................................31
4.1.2 PE Cable...............................................................................................................................31
4.1.3 S1/X2 Cables........................................................................................................................32
4.1.4 RF Cable...............................................................................................................................33
4.1.5 Dry Contact Cable................................................................................................................34
4.1.6 GPS Jumper..........................................................................................................................35
ii
4.2 ZXSDR R8882 L268 Cables...........................................................................................................35
4.2.1 DC Power Input Cable..........................................................................................................35
4.2.2 Protective Grounding Cable.................................................................................................36
4.2.3 Fiber Cable for Connecting a BBU......................................................................................36
4.2.4 Fiber Cable for Cascading RRUs.........................................................................................36
4.2.5 External Monitoring Cable...................................................................................................37
4.2.6 AISG Control Cable.............................................................................................................37
4.2.7 RF Jumpers...........................................................................................................................38
5 Networking................................................................................................................................................41
5.1 Product Networking Mode..............................................................................................................41
5.1.1 Star Networking...................................................................................................................41
5.1.2 Cascade Networking.............................................................................................................42
5.2 Typical Board Configuration...........................................................................................................43
iii
1 Overview
Highlights
ZTE Distributed Base Station Solution
Product Location in LTE Wireless Network
Product Overall Appearance
Product Characteristics
Product Functions
1.1 ZTE Distributed Base Station Solution
To supply the customer with more competitive communication equipment and solution
in the market, ZTE develops and promotes ZTE SDR eBBU (baseband unit) and eRRU
(remote RF unit) distributed base station solution timely, which jointly perform LTE
base station service.
1
Figure 1.1-1 ZTE Distributed Base Station Solution
ZTE's LTE eBBU+eRRU distributed base station solution has the following
predominance:
1. Saving labor cost and engineering cost for networking.
eBBU+eRRU distributed base station equipment is small in size, light in weight,
and easy for transportation and engineering construction.
2. Fast networking, also saving the fees of renting equipment room.
eBBU+eRRU distributed base station is applicable to various sites, such as
mounted on the steel tower, on the building top, or on the wall, etc. It's more
flexible in selecting installation site, and not restricted by the space of the
equipment room. It can help the operators to deploy network rapidly, and exert
the predominance of Time-To-Market. It can also save the fees of renting
equipment room, and the network operation cost.
3. Convenient in upgrade and capacity expansion; saving the initial stage cost of
the network.
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Chapter 3 Boards
eRRU can be mounted as close to the antenna as possible, to save the cost of
feed cable and decrease the wastage of feed cable. It also can enhance the output
power of eRRU top and increase the coverage.
4. Low power consumption, power-saving.
Compared with traditional base station, eBBU+eRRU distributed base station
has lower power consumption, which can greatly reduce the investment and cost
on electric power, and thus save the network operation cost.
5. Distributed networking, making good use of operators' network resources
supporting eBBU+eRRU distributed networking; supporting the star or chain
networking mode between eBBU and eRRU.
6. Adopting more perspective generalized base station platform.
eBBU adopts the platform designed for the future B3G and 4G. One hardware
platform can realize different standard modes, and several standard modes can
coexist in one base station. In this way, the operators' management can be
simplified, and several base stations to be invested can be integrated into one
base station (multimode base station). The operators can select the evolution
direction of the future network more flexibly, and the end users will also feel the
transparency of the network and smooth evolution.
1.2 Product Location in LTE Wireless Network
LTE is a new-generation wireless network technology based on OFDM technology.
The main aims of formulating LTE standards are:
To provide higher user data rate, enhance system capacity, decrease delay and
operation cost.
To realize the flexible configuration and implementation of the mobility of a present or
new access technology based on IP network.
LTE has optimized the traditional 3G network architecture, and adopts flat network
structure. LTE system consists of EPC and eNodeB. EPC is responsible for the core
network. EPC's signaling processing part is called as MME, and the data processing
part
is called as SAE Gateway (S-GW). eNodeB is responsible for the access network,
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LTE_FDD_eNB_E_10 LTE Overview
being also called E-UTRAN. eNodeB and EPC are connected via S1 interface; eNodeB
and other eNodeBs are connected via X2 interface.
ZXSDR B8200 L200 realizes the function of eNodeB's baseband unit, and forms a
complete eNodeB with the RF unit (eRRU) via the baseband-RF interface. ZXSDR
B8200
L200 and EPC are connected via S1 interface; and are connected with other eNodeBs
via X2 interface.
Figure 1.2-2 Product Location In LTE Network
1.3 Product Overall Appearance
ZXSDR B8200 L200 overall appearance is shown in below.
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Chapter 3 Boards
Figure 1.3-3 ZXSDR B8200 Overall Appearance
ZXSDR R8882 L268 overall appearance is shown in below.
Figure 1.3-4 ZXSDR R8882 L268 Appearance
1.4 Product Characteristics
ZXSDR B8200 L200 characteristics are as follow:
Multi-Mode Baseband Unit
ZXSDR B8200 L200 can support all kinds of wireless access technologies
simultaneously, including GSM, UMTS, CDMA, WiMAX and LTE, which share the
common control function and transmission totally. It fully satisfies operators’need of
smooth migration from GSM/UMTS with BP board replaced only.
All-IP Architecture to IP RAN
ZXSDR B8200 L200 adopts IP switching, and provides GE/FE external interfaces.
Large Capacity
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LTE_FDD_eNB_E_10 LTE Overview
ZXSDR B8200 L200 supports different configurations.
In typical configuration,ZXSDR B8200 L200 supports 200 Mbps DL + 75 Mbps UL
(three 20 MHz cells in MIMO 2x2).
ZXSDR B8200 L200 also supports larger capacity with more BPL baseband boards:
600 Mbps DL + 225 Mbps UL(six 20 MHz cells in MIMO 2x2).
600 Mbps DL + 300 Mbps UL(three BPL boards in MIMO 4x4).
ZXSDR B8200 L200 is hardware readiness to support MIMO 4x4 without hardware
changing. In first GA version, BPL supports MIMO 4x4 in test mode.
According to the application scenario, ZXSDR B8200 L200 can support
GSM/UMTS/LTE multi-mode with respective baseband processing boards.
Baseband Pooling
ZXSDR B8200 L200 supports baseband resource pooling function based on carriers.
When FS and two BPLs or three BPLs are configured, one carrier can be flexibly
mapped to any BPL board. But at the beginning of LTE network deployment, ZTE
recommends only one BPL is configured in order to reduce the operator‘s CAPEX
investment.
Flexible Networking
ZXSDR B8200 L200 provides GE/FE interfaces and IP networking. It supports eRRU
in different networking modes, like star and chain networking to satisfy the
requirements of operators in different environments and under different transmission
conditions.
Compact Design, Easy Deployment
ZXSDR B8200 L200 adopts standard MicroTCA platform, with 2U in height and 19
inches in width, and can be easily installed into a standard 19 inches rack. It can also be
mounted on the wall with a minimal space requirement reducing OPEX.
The features of the ZXSDR R8882 are as follows:
· lMultiple radio access modes
The ZXSDR R8882 supports single mode, dual mode, or hybrid mode, including
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Chapter 3 Boards
GSM, UMTS, CDMA, and LTE.
· Distributed architecture
BBUs and RRUs constitute distributed BTS systems, providing flexible office
deployment.
· Smooth evolution
Through software upgrade, the ZXSDR R8882 can be smoothly evolved to
HSPA or LTE, saving the investment of the telecom operator to the maximum.
· Flexible configuration and networking
· Advanced internal structure
Between internal boards and modules, blind interconnection and hard link
interconnection are used.
· Energy saving and environment-friendly design
Energy-saving and environment-friendly due to multi-carrier power amplifiers,
and advanced Doherty and Digital Pre-Distortion (DPD) linear power
amplification technologies.
· Easy installation and maintenance
Easy installation and maintenance due to compact size and light weight.
1.5 Functions
ZXSDR B8200 L200 accomplishes the following basic functions with Uu/S1/X2 and
O&M interfaces:
· Channel coding and decoding
· Channel multiplexing and de-multiplexing
· Baseband resource pooling function
· Measurement and report
· Power control
· Spatial multiplexing, transmit diversity and receive diversity
· Synchronization
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LTE_FDD_eNB_E_10 LTE Overview
· Frequency hopping
· Operation and Maintenance
· DTX
R8882 is the remote radio unit of distributed base station. The signal is transmitted or
received through R8882 to/from base band processing unit for further processing via
standard CPRI interface. The product basic functions are listed below:
· Supports the configuration of 5 MHz, 10 MHz, 15 MHz and 20 MHz scalable
bandwidth.
· Supports 1730 MHz~1785 MHz(uplink)/1825 MHz~1880 MHz(downlink)
· Supports 2x2 MIMO on downlink.
· Supports QPSK,16-QAM,64-QAM on downlink, QPSK and 16–QAM on
uplink.
· Supports transmission and receive power detection.
· Supports overload power protection for power amplifier.
· Supports power amplifier switching on/off function.
· R8882 software failure will not affect the running of eBBU and other R8882s
which are connected to it.
· Supports field strength scanning, temperature query, VSWR query, dry contact,
hardware/software resetting.
1.6 Technical Indices
1.6.1 ZXSDR B8200 L200 Technical Indices
1.6.1.1 Physical Indices
Dimension:88.4 mm x 482.6 mm x 197 mm (HxWxD).
The weight of ZXSDR B8200 L200 depends on baseband configuration. The bellow
table describes the state of typical configuration. The weight of ZXSDR B8200 L200 is
less than 7.5 Kg.
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Chapter 3 Boards
Table 1.6-1 Product Weight
Item Weight (Kg) LTE Typical Configuration
Rack 3 1
PM 0.5 1
SA 0.25 1
FS 0.5 0
BPL 0.5 1
CC 0.5 1
FAN 0.5 1
Total weight 5.25 6
1.6.1.2 Capacity
One BPL can support 1200 RRC connections, and the throughput of BPL is 200
Mbps(DL)/75 Mbps(UL).
1.6.1.3 Power Supply
The power supply requirement to ensure the normal operation of the ZXSDR B8200
L200 is -48V DC (voltage range: - 57V ~ - 40V).
1.6.1.4 Power Consumption
The power consumption depends on traffic load, board configuration and ambient
temperature.
Table 1.6-2 Typical Power Consumption
Item Typical configuration
PM 1 10
SA 1 5
FAN 1 30
BPL 1 55
CC 1
1.6.1.5 Grounding Index
The grounding resistance of the equipment room where the ZXSDR B8200 L200 is
installed should be equal to or less than 5 Ω. In the areas where the annual lightening
days are less than twenty days, the grounding resistance can be less than 10 Ω.
1.6.1.6 Working Environment Indices
The working environment indices are illustrated in the table.
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LTE_FDD_eNB_E_10 LTE Overview
Table 1.6-3 Product Working Environment Indices
Item Requirement
Temperature Long-term -15~ +50 ℃
Short-term -25 ~ +55 ℃
Relative Humidity Long-term 5% ~ 95%
Short-term 5% ~ 100%
1.6.1.7 Interface Indices
ZXSDR B8200 L200 interface indices are shown in the table.
Table 1.6-4 Product Interface Indices
Item Interface Connector Type
BPL 3x optical interfaces SFP (LC)
CC
1xGE, 2xFE 2 RJ45 for Electrical and one SFP (LC)
for optical
1xEXT RS485 can be used to connect with
other
external receiver
1xGPS SMA
FS 6x optical interfaces SFP(LC)
1.6.1.8 Reliability Indices
MTBF:≥233000 hours
MTTR:30 minutes
Availability:99.999785%
Down duration:≤1.128 min/year
1.6.1.9 Electromagnetic Compatibility Indices
ZXSDR B8200 L200 electromagnetic compatibility indices are shown in the table.
Table 1.6-5 Product Electromagnetic Compatibility Indices
Item Requirement
Anti-static protection Capable of protecting against the contact discharge
of ±6000 V, Air discharge of ±8000 V
Surge anti-interference ±2000 V between lines and the ground
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Chapter 3 Boards
1.6.2 ZXSDR R8882 L268 Technical Specifications
1.6.2.1 Physical Indices
Table 1.6-6 Physical Indices
Item Index
Dimension 472
Weight 24
Table 1.6-7 power supply and Power Consumption
Item Index
power supply -48 VDC (range: -37 VDC ~-57 VDC)
Power Consumption 460 W
Table 1.6-8 Working Environment
Item Index
Temperature(Working) -40℃~55℃
Relative Humidity(Working) 5%~100%
Temperature(Storage) -55℃~70℃
Relative Humidity(Storage) 10%~100%
Table 1.6-9 Reliability
Item Index
Availability ≥99.999842%
MTBF ≥340000 hours
MTTR 1 hour
Down duration ≤ 0.83 min/year
1.6.2.2 Performance Indices
Operation Frequency Band
The operation radio frequency band of R8882 is 1730 MHz~1785 MHz(uplink)/1825
MHz~1880 MHz(downlink).
Output Power
The output power of R8882 is 2x60 W.
Transmission
· The maximum transmission distance is 10 kilometers.
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LTE_FDD_eNB_E_10 LTE Overview
· Supports two kinds of optical fiber interface mode: 2x3.072 Gbps and 2x2.4576
Gbps.
1.6.2.3 Electromagnetic Compatibility
Table 1.6-10 Electronic Static Discharge Immunity
Item Contact discharge Air discharge
Basic testing 6 KV 8 KV
Enhanced testing 8 KV 15 KV
Table 1.6-11 RF Electromagnetic Field Radiation Immunity
Range Feature Field Strength
80 MHz~800MHz 80%AM(1kHz) 10 V/m
800 MHz~960 MHz 80%AM(1kHz) 10 V/m
960 MHz~1400MHz 80%AM(1kHz) 10 V/m
1400 MHz~2700 MHz 80%AM(1kHz) 10 V/m
2700 MHz~6000 MHz 80%AM(1kHz) 10 V/m
Table 1.6-12 Electrical Fast Transient Burst Immunity
Item Voltage Repetition Frequency
Basic testing ±1 kV 5 kHz
Enhanced testing ±2 kV 5 kHz
Table 1.6-13 Lightning Tolerance
Signal Type Nominal Required
Antenna feeder port 10 kA ± 5 times
The 10 KA protection is guaranteed by the duplex
of the RF module. An external lightning protection
unit is needed for the higher protection other than
10 KA
DC power portexternal SPD 20 kA ± 5 times, Residual Voltage is less
than 250 V.
Shielded cable is used for the R8882
remote power supply
Signal port—dry contact 3 KA
Signal port—RS485 signal 3 KA
AISG power 5 KA
Signal port—AISG 485 port 3 KA
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Chapter 3 Boards
Table 1.6-14 Radiation Transmission
Frequency range (MHz) Quasi-peak limit (dBuV/m) Distance (m)
30~230 30 10
230~1000 37 10
1G~3G 50 10
3G~6G 54 10
Table 1.6-15 Power Conducted Transmission
Frequency range (MHz)Sum limit(dBuV)
Quasi-peak Average value
0.15~0.50 56~66 46~56
0.50~5 56 46
5~0 60 50
Table 1.6-16 Signal Conducted Transmission
Frequency range (MHz)Sum limit (dBuV)
Quasi-peak Average value
0.15~0.50 84 dBuV~74 dBuV(Voltage)) or
40
dBuV~30dBuA(Current))
74 dBuV~64
dBuV(Voltage)or 30
BuV~20dBuA
(Current))
0.50~30 74 dBuV(Voltage) or 30
dBuA(Current))
64 dBuV(Voltage) or
20 dBuA(Current))
Table 1.6-17 RF Electromagnetic Field Conducted Immunity
Frequency range Voltage Feature Decision Rule
0.15 MHz ~ 80
MHz
10 V 80%AM(1kHz) Rule A
Table 1.6-18 Surge Immunity
SiteOpen circuit Voltage (kV)
Type Wire—Wire Wire—Ground
Indoor
DC power 0.5 1
Long distance wire (wire
length longer than 10
meters)
1 1
Short distance wire (wire
length less than 10 meters)- -
13
2 System Structure
Highlights
Hardware Structure
Software Structure
2.1 Hardware Structure
ZXSDR B8200 L200 consists of a control & clock board, baseband processing boards,
a site alarm board, a power module, and a fan module.
ZXSDR B8200 L200 hardware system is designed according to the structure of
distributed base station in which the baseband unit and radio frequency unit are
separated. It can be classified into two function units: eBBU (Baseband Unit) and
eRRU (Remote Radio Unit). It can either deploy with eRRU, or deploy by combining
the eRRU and eBBU into one cabinet to form macro base station. eBBU and eRRU are
connected via the standard baseband-RF optical interface.
Figure 2.1-5 ZXSDR B8200 L200 hardware structure
15
2.2 Software Structure
The software architecture of ZXSDR B8200 L200 can be divided into three layers,
they are SDR unified platform software, LTE adaptor software and LTE application
software.
Figure 2.2-6 ZXSDR B8200 L200 Software Structure
SDR Unified Platform Software
SDR unified platform software provides the functions of Board Support Package
(BSP), Operation Support Sub-system (OSS) and Bearer Sub-system (BRS).
· BSP provides the device interface to the OS (Operating System).
· OSS is the support layer in this entire framework, which is a hardware
independent platform for running software and provides basic functions like
scheduling, timer, memory management, communication, sequencing control,
monitoring, alarming and logging.
· BRS provides the IP communication function for inter-boards and internetwork
elements.
LTE Adaptor Software
LTE adaptor software accomplishes the functions of Operating Administration and
Maintenance (OAM), and Data Base Sub-system (DBS).
· OAM provides the configuration, alarm and performance measurement function
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Chapter 3 Boards
for LTE eNodeB.
· DBS is the database system.
Application Layer
The application layer provides LTE functions of Radio Network Layer Control plane
(RNLC)), Radio Network Layer User plane (RNLU), MAC Uplink Scheduler
(MULSD), MAC Downlink Scheduler (MDLSD), and Physical layer (PHY).
· RNLC provides radio control plane’s common and dedicated resource
management and controlling.
· RNLU provides user plane function.
· MULSD provides uplink MAC scheduling.
· MDLSD provides downlink MAC scheduling.
· PHY provides LTE PHY function.
17
3 Boards
Highlights
Board/module
Interface
Indicators
3.1 Overview
ZXSDR B8200 L200 board can be classified into the following types:
· Control and clock board: CC
· Fabric switch board: FS
· Baseband pool board: BPL
· Power module: PM
· Site alarm module: SA
· Fan module: FAN
3.2 CC Board
3.2.1 CC Board Function
ZXSDR B8200 L200 can be configured with maximum 2 CC boards for 1+1
redundancy. There are three main functional modules: a GE switch module, a GPS and
clock module, and a transmission module.
GE switch module
The GE switch module is made as a switching network between CC board and
baseband processing board. User data, control and maintenance signals between CC
board and baseband processing board are all transmitted through this module.
GPS and Clock module
The GPS receiver can be integrated in CC board. The GPS and Clock module support
19
following functions:
· Synchronizing with various external reference clocks, including the GPS clock
and the clock provided by BITS, IEEE 1588, etc.
· Generating and delivering the clock signal to other modules.
· Providing GPS receiver interface and managing the GPS receiver.
· Providing a real-time timing for system operation and maintenance; the real-
time timing can be calibrated by O&M or GPS.
Transmission modules
Transmission modules support following functions:
· Implementing data switching for service data and control flow within the
system.
· S1/X2 interface protocol processing.
· Supporting primary/slave boards hot backup.
· Provide GE/FE physical interfaces.
Other Function
CC board provides other function besides previously mentioned ones:
· Managing software versions of boards and programmable components, and
supporting local and remote software upgrade.
· Monitoring, controlling and maintaining of the base station system, providing
LMT interface.
· Supervising the running status of each board within the system.
· Inventory management.
3.2.2 CC Board Front Panel
CC board font panel is as shown in the figure.
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Chapter 3 Boards
Figure3.2-7 CC Board Front Panel
3.2.3 CC Board Panel Indicators
Table 3.2-19 CC Indicator Description
LED Color Meaning Description
RUN GreenIndicates the
running state
On: CC starts to run and tries to obtain the logical address
Blinking slowly (on for 1.5 s and off for 1.5 s): Basic process
of the CC is being powered on
Blinking normally (on for 0.3 s and off for 0.3 s): CC is
already powered on and works normally
Blinking slowly (on for 2 s and off for 2 s): CC is performing
the active/standby pre-switching in the case of two CCs
Blinking slowly (on for 1 s and off for 1 s): CC is performing
the active/standby switching in the case of two CCs
Blinking quickly (on for 70 ms and off for 70 ms):
Communication between the active CC and OMP or standby
CC failed
Off: Indicates that the self-check fails
ALM Red Indicates the alarm
Blinking periodically (5 Hz): Indicates that critical and major
alarms are generated
Blinking periodically (1 Hz): Indicates that minor and warning
alarms are generated
Off: Indicates that no alarms are generated
M/SGreen Indicates the
active/standby state
On: Indicates that the board is at active state
Off: Indicates that the board is at standby state
REF Green Indicates the GPS
antenna state or
2 MHz status. It
also shows the
connection states
of the SMA port on
the corresponding
panel
On: Indicates that the antenna feeder system works normally
Off: Indicates that the antenna feeder system and the satellite
work normally and are being initialized
Blinking slowly (on for 1.5s and off for 1.5s): Indicates that
the antenna feeder system is disconnected
Blinking quickly (on for 0.3s and off for 0.3s): Indicates that
the antenna feeder system works normally but can not receive
signals from the satellite
Blinking slowly (on for 2.5s and off for 2.5s): The antenna is
disconnected
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LTE_FDD_eNB_E_10 LTE Overview
LED Color Meaning Description
Blinking quickly (on for 70 ms and off for 70 ms): Indicates
that no messages are received during the initialization
ETH0
Green Indicates the
link
states of the ETH0
interface.
On: Indicates that the physical link of S1/X2/OMC network
port (electrical port, or optical port) is normal
Off: Indicates that the physical link of S1/X2/OMC network
port is broken
ETH1
Green Indicates the
link
states of the ETH1
interface.
On: Indicates that the physical link of DEBUG/CAS/LMT
interface is normal
Off: Indicates that physical link of DEBUG/CAS/LMT
interface is broken
E0S
Green
Indicates 0~3 E1/T1
link states
During the first second, blinking one time means the first E1 is
normal. Off means the E1 is not available.
During the third second, blinking two times means the second
E1 is normal. Off means the E1 is not available.
During the fifth second, blinking three times means the third
E1 is normal. Off means the E1 is not available.
During the seventh second, blinking four times means the
fourth E1 is normal. Off means the E1 is not available.
E1SGreen Indicates 4~7 E1/T1
link statesAs same as EOS
E2SGreen Indicates 8~11
E1/T1 link statesAs same as EOS
E3SGreen Indicates 12~15
E1/T1 link statesAs same as EOS
HS - - Reserved
3.2.4 CC Board Panel Interface
Table 3.2-20 CC Board Panel Interface
Interface Description
ETH0
ETH0 is used for S1/X2 connection. It is an Ethernet electrical interface
(Adaptive to 100 M/1000 M automatically). ETH0 and TX/RX interfaces are
exclusively used to each other.
DEBUG/CAS/LMT
DEBUG/CAS/LMT is used for eBBU cascading, debugging, and local
maintenance. ETH1 is an Ethernet electrical interface (Adaptive to 10 M/100
M/1000 M automatically).
TX/RX
TX/RX is used for S1/X2 connection. It is an Ethernet optical interface
(supports 1000 BASE-LX/SX or 100 BASE-FX). TX/RX and ETH0 interfaces
are exclusively used to each other.
EXT EXT is mainly used for external GPS receiver or clock extension
22
Chapter 3 Boards
REF REF is used for GPS antenna interface or BITS clock interface
USB Data updating
3.2.5 CC Board Button
RST and M/S,two buttons are there on CC board front panel.
RST: RST is used to reset CC board.
M/S: M/S is used to make active/standby switch.
3.3 BPL Board
3.3.1 BPL Board Function
ZXSDR B8200 L200 can be installed with 1 to 3 BPL boards. One BPL can deal with
20 MHz LTE bandwidth with 3 cells and this configuration can meet the requirements
of most operators. BPL processes LTE baseband protocol specified by 3GPP R8.
BPL board’s main functions are:
· Processing physical layer protocol.
· Providing uplink/downlink I/Q signal.
· Processing MAC, RLC and PDCP protocol.
3.3.2 BPL Board Front Panel
BPL board front panel is as shown in the figure.
Figure3.3-8 BPL Board Front Panel
3.3.3 BPL Board Panel Indicators
Table 3.3-21 BBPL Board Panel Indicators
LED Color Meaning Description
RUN Green Board running
state
Always ON: BPL is at powering on stage
Blinking periodically (0.5 Hz): BPL is downloading
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LTE_FDD_eNB_E_10 LTE Overview
LED Color Meaning Description
software
Blinking periodically (0.3 s ON, 0.3 s OFF): BPL working
state is normal
OFF: BPL power on failed
ALM Red Board alarm
Blinking periodically (70 ms ON, 70 ms OFF): Critical and
major alarms are generated
Blinking periodically (1500 ms ON, 1500 ms OFF): Minor
and warning alarms are generated
Always ON: BPL self-check failed
Off: No alarms are generated
HS - - Reserved
BLS GreenBackplane link
state
Blinking periodically (1 Hz): TDM physical links between
BPL board and FS board are normal
Always ON: TDM physical links between BPL board and
FS board are abnormal
OFF: There is no TDM signal
BSA GreenBoard running
state
Blinking periodically (1 Hz): Physical links between CPU
and DSP are normal
Blinking periodically (2 Hz): Physical links between CPU
and DSP are abnormal
Always ON: SRIO SW ACKID error
OFF: Physical links between CPU and DSP are broken
LNK GreenEthernet link
states
Blinking periodically (1 Hz): Ethernet physical links
between BPL and CC are normal
OFF: Ethernet physical links between CPU and DSP are
broken are broken
CST GreenCPU running
state
Blinking periodically (1 Hz): CPU runs normally
OFF: CPU runs abnormally
OF0~
OF2Green
Optical interface
running state
Blinking periodically (1 Hz): Optical interface runs normally
Always ON: Optical interface runs abnormally
Off: Los of signal
3.3.4 BPL Panel Interfaces
There are 3 pairs of optical interfaces on the BPL board, which are mainly used to
connect to eRRU.
3.3.5 BPL Board Button
RST button is used to reset BPL board.
24
Chapter 3 Boards
3.4 SA Board
3.4.1 SA Board Function
ZXSDR B8200 L200 is configured with 1 Site Alarm (SA) board. The board will be
managed by CC board.
The main function of SA board are:
Responsible for fan speed control and alarming.
Providing external interfaces.
Monitoring serial interface.
Monitoring boards’ temperature.
Providing dry contacts and the lightening protection for the external interfaces.
3.4.2 SA Board Front Panel
Figure3.4-9 SA Board Front Panel
3.4.3 SA Board Panel Indicators
Table 3.4-22 SA Board Panel Indicators
LED Color Meaning Description
RUN GreenBoard running
state
Always ON: Indicates that SA board is at reset state.
Blink (on for 0.3 s and off for 0.3 s repeatedly: Indicates
that SA board runs normally
Off: Indicates that SA board self-check failed
ALM RedBoard alarm
state
Always ON: Indicates that alarms are generated on SA
board.
Off: Indicates that no alarm is generated on SA board.
25
LTE_FDD_eNB_E_10 LTE Overview
3.4.4 SA Board Panel Interfaces
There is one RS485/232 interface on SA board panel, which is mainly used as
monitoring.
3.5 PM Board
3.5.1 PM Board Function
Power Module (PM) is in charge of the presence state detection of all the other boards,
providing or removing the power to or from the other boards.
ZXSDR B8200 L200 can be configured with 2 PMs, working with 1+1 redundancy
mode, or load-balancing when the power consumption of the eBBU frame is beyond
the rated output power of a single PM.
PM has the following functions:
Providing two kinds of DC output voltage: 3.3 V for Management Power (MP) and 12
V for Payload Power (PP).
Reset all of the other boards in eBBU frame under the control of man-machine
commands.
Detecting the presence/absence state of all the other boards in eBBU frame.
Providing protection of input over-voltage/under-voltage.
Providing protection of output over-current and overload power management.
3.5.2 PM Board Front Panel
PM board front panel is as shown in below.
26
Chapter 3 Boards
Figure3.5-10 PM Board Front Panel
3.5.3 PM Board Panel Indicators
Table 3.5-23 PM Board Panel Indicators
LED Color Meaning Description
RUN Green Board running state
Always ON: Board is at reset state
Blinking periodically (1 Hz): Board runs
normally
Blinking periodically (2 Hz): Communicates
normally between with PM board and CC
board
Off: Board self-check failed
ALM Red Board alarm state
Always ON: Alarms are generated on PM
board
Off: No alarm is generated on PM board
3.5.4 PM Board Panel Interfaces
PM board panel interfaces are illustrated in the table.
Table 3.5-24 PM Board Panel Interfaces
Interface Description
MON Debugging interface, RS232 interface
-48 V/-48 V RTN -48 V input
3.5.5 PM Board Button
ON/OFF:Power Button
27
LTE_FDD_eNB_E_10 LTE Overview
3.6 FAN Module
3.6.1 FAN Module Function
ZXSDR B8200 L200 is configured with 1 Fan Module(FAN). The main functions of
FAN are:
· Fan speed auto-adjustment according to the equipment working temperature.
· Monitor, control and fan state reporting.
3.6.2 FAN Module Front Panel
FAN module front panel is as shown in below.
Figure3.6-11 FAN Module Front Panel
3.6.3 FAN Module Panel Indicators
Table 3.6-25 FAN Module Panel Indicators
LED Color Meaning Description
RUN Green Running state
Always ON: FAN is powered on and is not controlled by
SA board.
Blinking (on for 0.3 s and off for 0.3 s): FAN is
controlled by SA board.
28
Chapter 3 Boards
LED Color Meaning Description
Off: FAN is not powered on.
ALM Red Alarm state
If ALM indicator is ON:
If RUN LED is on, it indicates that FAN is powered on
and is not controlled by SA board.
If RUN LED is blinking normally (ON for 0.3 s and OFF
for 0.3 s), it indicates that FAN module works
abnormally.
If ALM indicator is OFF:
If RUN LED is OFF, it indicates that FAN is not
powered ON.
If RUN LED is blinking normally (ON for 0.3 s and OFF
for 0.3 s), it indicates that FAN works normally.
29
4 Cables
Highlights
ZXSDR B8200 L200 Cables
ZXSDR R8882 L268 Cables
4.1 ZXSDR B8200 L200 Cables
4.1.1 DC Power Cable
DC power cable is used for connecting ZXSDR B8200 L200 to external power
distributed unit.
Figure4.1-12 DC Power Cable
Table 4.1-26 Cable Signal Relation
Name Signal Description End
-48 V RTN Voltage:: 0 VDC A1 Black conductor
-48 V Voltage::-48 VDC A2 Blue conductor
4.1.2 PE Cable
PE cable is used for connecting ZXSDR B8200 L200 to the grounding network, so as
to provide protection and ensure personal safety. PE cable is a 16 mm2 yellow-green
cable with TNR terminals at both ends.
The PE cable overall appearance is as shown in below.
31
Figure4.1-13 PE Cable Appearance
4.1.3 S1/X2 Cables
S1/X2 cable is used for connecting ZXSDR B8200 L200 to core network, or peer
eNodeB, or transport devices. It can either be Ethernet cable or optical fiber.
4.1.3.1 S1/X2 Optical Fiber
S1/X2 optical fiber can either be single-mode or multi-mode, and it adopts LC type
connector.
Figure4.1-14 S1/X2 Cable Appearance
4.1.3.2 S1/X2 Ethernet Cable
The overall S1/X2 Ethernet cable is as shown in below.
32
Cables
Figure4.1-15 S1/X2 Ethernet Cable
The Ethernet cable signal relation is shown in the table.
Table 4.1-27 Ethernet Cable Signal Relations
End A Definition Color
1 ETH-TR1+ White/Orange 1
2 ETH-TR1- Orange 2
3 ETH-TR2+ White/Green 3
4 ETH-TR3+ Green 4
5 ETH-TR3- White/Blue 5
6 ETH-TR2- Blue 6
7 ETH-TR4+ White/Brown 7
8 ETH-TR4- Brown 8
4.1.4 RF Cable
RF cable is used for connecting ZXSDR B8200 L200 to eRRU.
Figure4.1-16 RF Cable Appearance
End A is used for connecting to eRRU and end B used for connecting to ZXSDR
B8200 L200.
33
LTE_FDD_eNB_E_10 LTE Overview
4.1.5 Dry Contact Cable
Dry contact cable is used for connecting ZXSDR B8200 L200 to external monitoring
device, and thus receive dry contact data from external device or send dry contact data
to external device.
Dry contact cable overall appearance is as shown in below. End A of the cable is DB25
connector.
Figure4.1-17 Dry Contact Cable Appearance
The signals of an input dry-contact cable describes is shown in below.
Table 4.1-28 Dry Contact Cable Signals Relation
Signal Pin ( End A) Color
I_SWIO0
GND
114
White
Blue
I_SWIO1GND
215
White
Orange
I_SWIO2GND
316
White
Green
I_SWIO3GND
417
White
Brown
I_SWIO4GND
518
Red
Blue
I_SWIO5GND
619
Red
Orange
B_SWIO1
GND
720
Red
Green
B_SWIO2GND
821
Red
Brown
--
922
--
34
Cables
--
1023
--
1. B_SWIO1~B_SWIO2 indicates channels 1-2 dry-contact input/output
2. I_SWIO0–I_SWIO5 indicates the channels 1-6 dry-contact input
4.1.6 GPS Jumper
GPS feeder jumper is used for connecting ZXSDR B8200 L200 to GPS antenna.
Figure4.1-18 GPS Jumper
4.2 ZXSDR R8882 L268 Cables
4.2.1 DC Power Input Cable
The DC power input cable supports the input of -48 V DC power and a dry contact
signal.
Figure4.2-19 DC Power Input Cable
Table 4.2-29 Signal Definition
Color of Core Name Definition
Blue -48V -48 V DC Power
Black -48V GND -48 V DC ground
White NODE_IN+ Dry contact
Blue NODE_IN- Dry contact
35
LTE_FDD_eNB_E_10 LTE Overview
4.2.2 Protective Grounding Cable
The protective grounding cable provides protective earth for the ZXSDR R8882
chassis.
Figure4.2-20 Appearance of the Protective Grounding Cable
4.2.3 Fiber Cable for Connecting a BBU
A Single Mode Fiber (SMF) cable is used to connect the ZXSDR R8882 to a BBU.
End A of this cable is mounted with a waterproof LC connector, and end B of this
cable is mounted with an LC connector.
1. Outdoor waterproof assembly
Figure4.2-21 Fiber Cable for Connecting a BBU
A Single Mode Fiber (SMF) cable is used to connect the ZXSDR R8882 to a BBU.
End A of this cable is mounted with a waterproof LC connector, and end B of this
cable is mounted with an LC connector.
4.2.4 Fiber Cable for Cascading RRUs
1. Outdoor waterproof assembly
Figure4.2-22 Fiber Cable for Cascading RRUs
36
Cables
An SMF cable with both ends mounted with an waterproof LC connector is used to
connect two RRUs.
4.2.5 External Monitoring Cable
The external monitoring cable supports the interaction of signals between the ZXSDR
R8882 and external devices, including the interaction of alarm signals, RS485/RS422
control signals, and dry contact signals.
End A of this cable is mounted with an 8-pin round plug. End B of this cable needs to
be mounted with an appropriate connector on field according to the connector type of
the external device to be connected. The cable length is 1.2 m.
Figure4.2-23 External Monitoring Cable
Table 4.2-30 Signal Definition
Name Color of Core Definition
PIN1 Brown Dry contact input, positive
PIN2 Yellow Dry contact input, negative
PIN3 Blue Dry contact input, positive
PIN4 White Dry contact input, negative
PIN5 Green Full-duplex RS485 signal, positive
PIN6 Gray Full-duplex RS485 signal, negative
PIN7 Red Full-duplex RS485 signal, positive
PIN8 Black Full-duplex RS485 signal, negative
4.2.6 AISG Control Cable
The AISG control cable is used to send AISG control signals to an RET antenna that is
connected to the ZXSDR R8882. An 8-pin aviation plug in compliance with IEC
60130-9-ED is mounted on both ends of the AISG control cable.
37
LTE_FDD_eNB_E_10 LTE Overview
Figure4.2-24 AISG Control Cable
Table 4.2-31 Signal Definition
Pin (End A) Pin (End B) Name Definition
PIN3 PIN1 RS485B RS485-
PIN5 PIN2 RS485A RS485+
PIN6 PIN3,PIN4 AISG_PWR DC power (output)
PIN7 PIN5,PIN6 GNDPDC power ground
(output)
PIN1,PIN2,PIN4,PIN8
- NC Not used
4.2.7 RF Jumpers
The RF jumper is used to connect the feeder to the feeder interface of R8882. The
jumper should be connected after the main feeder is connected.
Normally, use a finished 2 m 1/2" jumper as the RF jumper, or make a jumper as
required by the on-site condition.
38
5 Networking
Highlights
Product Networking Mode
Typical Configuration
5.1 Product Networking Mode
5.1.1 Star Networking
ZXSDR B8200 L200 connects EPC and other eNodeBs through S1/X2 interfaces with
FE/GE, and connects to eRRUs through standard baseband-RF interfaces.
ZXSDR B8200 L200 and eRRU support star and chain networking.
Figure5.1-26 Product Networking Mode
41
In star networking mode, ZXSDR B8200 L200 can be connected with 9 eRRUs. In
chain networking mode, eRRU can cascade to 4 grades.
Figure5.1-27 Star Networking
5.1.2 Cascade Networking
The cascade networking of a BBU and multiple RRUs (ZXSDR R8882) is shown in
below.
Figure5.1-28 Cascade Networking
42
Cables
5.2 Typical Board Configuration
ZXSDR B8200 L200 typical board configuration is as shown in the table.
Table 5.2-32 Typical Board Configuration
Board Number Description
BPL 1 or 3 Baseband processing for LTE board
CC 1 Control and clock board
PM 1 Power module
FAN 1 Fan module
SA 1 Site Alarm board
ZXSDR B8200 L200 also supports boards/modules configurations listed below:
· 1xCC, 3xBPL, 2xPM, 1xFAN, 1xSA
· 2xCC, 3xBPL, 2xPM, 1xFAN, 1xSA, 1xFS
43