ZXSDRBS8800

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Conventional GSM/EDGE/UMTS Network System


SDR BTS Composed GSM/UMTS Network

The type of ZXSDR BS8800 for GSM/UMTS dual mode is ZXSDR BS8800 GU360.


Technical Features

ZXSDR BS8800 GU360 (hereafter BS8800) is one of multi-carrier, multi-mode indoor macro base station in ZXSDR BTS series. By applying advanced MicroTCA platform and SDR technology, BS8800 can directly support GPRS/ EDGE/ Enhanced EDGE/ UMTS/ HSPA and HSPA+ simultaneously.

Its main advantage is that can be configured to a GERAN BTS, or a UTRAN Node B, or a G/W dual-mode BTS by software reconfiguration only and no required to add any hardware.

BS8800 can be applied in dense urban, urban, suburban, rural area, highway or indoor environment and can fully meet operators’requirements in different stages and scenarios.


Characteristics

Smooth Evolution

Easy Installation

Evolution to IP RAN

Smooth Expansion

Green Power

Rich Interfaces


ZXSDR BS8800 System Architecture


ZXSDR BS8800 Hardware Architecture


Baseband unit of ZXSDR BS8800


CC (Control & Clock Module)

Control & clock module functions are:

Ethernet switching function, implementing data switching for service and control

flow within the system.

Abis/Iub interface protocol processing.

Monitoring, controlling and maintaining of the base station system, providing LMT interface

Managing software versions of boards and programmable components, and supporting local and remote software upgrade

Supervising the running status of each board within the system

Synchronizing with various external reference clocks, includingthe Abis/Iub interface recovery clock, the GPS clock and the clock provided by BITS; The CS can select one according to the actual configuration.


BPC Board

BPC is the baseband processing board. It processes the physical layer protocol and frame protocol specified by 3GPP.Downlink data coding/multiplexing, rate matching, channel mapping, spreading andscrambling, power adjusting, and channel compositing.Uplink signal RAKE receiving and channel decodingRadio link synchronization and Frame processingMeasuring parameters required in power control and handoverSofter handover and transceiver diversity.Communicating with the CS via the Ethernet interfaceProviding uplink/downlink I/Q Reading all the hardware management identifiers, including the backplane type number, slot number, board function type, board version, board function configuration identifier, and the CPU serial number Resetting upon power failure of a single board


Fabric Switch Board (FS)

The FS has the following functions:

Receive the signal from the rear board in the downlink and retrieve the data and timing.

Multiplex the received data and retrieve I/Q signal

I/Q mapping in the downlink and multiplex I/Q signal to the optical signals.

Receive the I/Q in uplink and demultiplex/mapping into I/Q signal

The multiplexed I/Q signal transmit to BP

Exchange CPU interface signaling through HDLC interface with RU60

MicroTCA protocol based module management function

Boards primary/secondary backup

In large site type, two FS boards can be configured at load sharing working mode.


Site Alarm Module (SA)

SA is responsible for fan revolution control and alarming

SA provide external expansion interfaces

Monitoring serial interface

Each SA is responsible for external alarm monitoring and providing the lightening

protection for the external interfaces.

Each SA provides 8 E1/T1 interface


RADIO UNIT


Radio Unit

RU60 is the RF module in BS8800 and process the conversion between basebandsignals and RF signals.

RU60 can be configured as GSM only, UMTS only or mixed mode module.

RU60 is designed to support 6 GSM carriers or 4 UMTS carriers and 20M bandwidth. When RU60 is used as GSM module, it can support 6 carriers and 60W power can be provided if GMSK is used. In case of 8PSK modulation in EDGE, the maximum output power is 40W. If RU60 is used as UMTS mode, it can support 4 carriers with 60W output power.

RU60 module consists of MCPA module, transceiver module, and duplex filter LNA.There are one TX/RX port and one RX port for connecting antenna


Technical Specifications

Capacity

Single configuration:

Maximum 36 GSM TRX or

− 12 UMTS CS with 640 CE processing capability.

Multi-mode configuration:

− GSM 24TRX + UMTS 1C6S or

− GSM 12TRX + UMTS 2C6S


ZXSDR B8200 GU360 RU02Indoor GSM&UMTS Dual Mode Base band Unit

Hardware Installation


Components to be Installed


The Components to be Installed are

1. ZXSDR B8200 GU360 Cabinet includes:

Cabinet

Modules

2. External Cables includes:

Power Cable, Grounding Cable, Ethernet Cable

Data Cable

GPS Jumper Cable

Optical Fiber

3. GPS Antenna Feeder system:

GPS Antenna

GPS Feeder Cable

GPS Feeder Grounding Clip


ZXSDR B8200 GU360 EXTERNAL INTERFACES


ZXSDR B8200 GU360 EXTERNAL INTERFACE DESCRIPTION


Cable Installation SpecificationCertain specifications of handling the cables during installation should be followed. This ensures the proper running of ZXSDR B8200 GU360 and also minimizes the risk of frequent maintenance of the cables. The specifications are:

Cables layout should be neat and tidy.

Power cables should be laid down separate and away from

other cables. A distance of 200 mm should be maintained between power cables and rest of cables.

The binding gaps between cables should be more than 1.5 m

to avoid cable damage that may result from shaking of cables.

Folding of fiber cable at 90° should be strictly avoided. For

fiber cable that is laid outdoors, minimal twist radius should

be greater than 90 mm. Whereas for fiber cable laid indoor,

minimal radius should be greater than 30 mm


Contd..

After installation, any surplus fiber cable should be put back in the fiber card for convenience.

During installation minimize fiber cable twist and turn as much as possible. Avoid dragging of the optical fiber. The binding force should be proper to ensure that binding gaps are less 0.5m.

Make sure that labels on the both ends of fiber cable are intact, clear and correct.


Fiber Optic Cable Installation

Steps 1. Install Abis GE interface transmission fiber.i. Connect one end of the optical fiber to the optical interfaceof CC module in ZXSDR B8200 GU360.ii. Connect the other end to the corresponding optical interfacein the transmission equipment.

2. Install the baseband-RF remote optical fiber.i. Connect one end of the optical fiber to the optical interfaceof FS module in ZXSDR B8200 GU360.ii. Connect the other end to the corresponding optical interfaceto the remote RF unit


Data Cable Installation


Description

Steps 1. Connect end A of the cable to the interface of SA module.2. Connect end B according to the description in Table.3. Connect E1 to its interface in the transmission equipment and

the Monitoring Cable to its corresponding interface in monitoringequipment.


Power Cable Connection

Steps 1. Insert the end A of DC power cable into the socket of PA module in the ZXSDR B8200 GU360cabinet.2. Connect the end B1 of DC power cable to the grounding terminalof cabinet and the end B2/B3 to its corresponding power unit.


Grounding Cable Installation

Steps 1. Connect one end of the grounding cable to the protection earthing terminal of ZXSDR B8200 GU360 cabinet.

2. Connect the other end to the copper grounding busbar.


GPS Antenna Feeder System Structure

GPS signal is the system clock and frequency reference. GPS antenna feeder receives the navigation and location signal from GPS satellite.

Clock module demodulates the frequency and clock signal and provides them to corresponding modules of ZXSDR B8200 GU360.


ZXSDR B8200 GU360 GPS ANTENNA FEEDER SYSTEM COMPOSION


ZXSDR B8200 GU360 GPS ANTENNA FEEDER SYSTEM COMPOSION (with Lightning Protector)


GPS ANTENNA SYSTEM WITH 1/4 IN. CABLE (Indoor Installation)


GPS Antenna Installation Position

There are two types of GPS antenna installation positions:

Tower Mounted

Roof Mounted


Tower Mounted GPS Antenna

The vertical distance between GPS antenna and the ground must be shorter than 5 m. And the horizontal distance between GPS antenna and the iron tower is required to be 30 cm.


ROOF Mounted GPS Antenna

GPS antennas must be installed in the shadow of lightning rod in roof installation mode.


Installation Position Requirements

Following are GPS antenna installation requirements:

GPS antenna installation position should have a broader view

to track on maximum satellites.

Ensure that there are no obstacles in 150o GPS antenna elevation

for both installation modes.

Keep GPS feeder cable short as possible to reduce signal loss and lightning induction.

Do not install GPS antenna under microwave antenna, high voltage lines, television transmitting tower, or within radiation range of a mobile system antenna.


Lightning Protection Requirements

Install GPS antenna within 45o lightning protection coverage

area of tower. Otherwise, install a special lightning arrester for

the GPS antenna.

Place GPS antenna away from lightning strikes. If it is tower mounted, install it in a safe place on the roof or in tower lower part.

Ensure that the pole supporting GPS antenna is grounded.


Vertical Placement Installation

U-SHAPED CLAMP INSTALLATION GPS ANTENNA VERTICAL INSTALLATION


It is recommended to have a pole with a diameter between 30 mm ~ 60 mm, 48 mm is recommended. The antenna should not be installed during rain and heavy wind.

Steps:

1. Open the package and take out GPS antenna and the GPS rack.

2. Use the U-shape clamp to install the GPS rack to the mounting pole. Insert spring washer and washer between the U-shaped clamp and mounting pole.

3. Use M6 nut to fix the U-shape clamp and the pole together firmly.


GPS Antenna Feeder System Installation check

Ensure the following after GPS antenna feeder system installation:

1. Antenna support and tower are properly installed.

2. Actual height of an antenna is according to network planning

design.

3. Antenna, 1/2 in. jumper and main feeder are properly connected.

4. Connectors are tightened and wrapped with waterproof adhesive tape and insulation tape properly.

5. The Standing Wave Ratio (SWR) of the Antenna feeder is less than 1.3.

6. Antenna locates within arrester protection area.

7. All outdoor jumper connectors are made waterproof.


Practical Example of GPS Antenna Position


ZXSDR BS200 GU360 RU02

Hardware Description


Ventilation Principal

Fan module is responsible for ventilation and heat dissipation of ZXSDR B8200 GU360. Cold air flows in from the right side of the cabinet. Hot air flows out from the left side of the cabinet. Working principle of the fan is shown in Fig.

Dust filter is fixed on the air-intake side to protect the cabinetfrom dust. (Dust filter should be cleaned regularly to ensure goodventilation effect.)


Power Module

PM provides the following functions

1. 16 internal interfaces for +12 V load power;2. 16 internal interfaces for +3.3 V

management power;3. Measurement and protection of input over-

voltage/under-voltage;4. Output over-current protection and load

power management.


Clock & control Panel ( CC)

CC module provides the following functions:1. GPS system clock and RF Reference clock;2. Abis/Iub interface function;3. Ethernet switch function, providing switch plane for

signaling stream and media stream;4. Rack management.


Fabric Switch Module (FS)

FS provides the following functions:- Baseband IQ data exchange;

- Providing interface between BBU and RRU.


Site Alarm Module

SA provides the following functions:- Alarm monitor and rev control of no more than 9 fans;- Signal monitor and interface lightning protection for the rack;- Providing 6 input dry contact interfaces, 2 input/output dry

contact interfaces;- Providing 8 lines of E1/T1 interfaces.


Location of X5 and X6 on SANote: For each jumper position, 0 stands for open circuit, and 1 stands for short circuit.

Jumpers (X5 and X6) on SA are configurable. X5 is used to set E1/T1 transmission mode. X6 is used to set cabinet number in BBU cascade state. Location of X5 and X6 is in shown in Figure. For X5/X6 in Figure LSB (least significant bit) position is on the left side, and MSB (most significant bit) position is on the right side.


UBPG provides the following functions:

Base band modulation, maximum processing capacity for downlink is 12 carriers;

Base band demodulation, maximum processing capacity for uplink is 12 carriers;

Supporting Base band frequency-hopping;

Universal Baseband Processing Board for GSM (UPBG)


Base band Processing Board Type C

BPC provides the following functions:

Coding/multiplexing, rate matching, channel mapping, spectrum spreading and scrambling, power weight and channel synthesis fordownlink data;

Rake receiving and channel decoding for uplink data, transmission of uplink data to Iub interface;

Supporting radio link synchronization and transmission-frame processing; Power control; Soft switch; Measurement.


FAN ARRAY MODULE (FA)

FA provides the following functions:- System temperature monitor and control;- Monitor, control, and report of fan state.

Dust Filter: Dust filter is fixed on the right side of FA, and can be extracted by pulling the handle on it.


Thank you

ZXSDRBS8800

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