guide to customer’s preparation for bts3900a wcdma installation-20080826-c-1.0

Guide to Customer’s Preparation for BTS3900A WCDMA Installation INTERNAL

Document Number

Product Name BTS3900A WCDMA

Intended Users

Client/Engineer/Cooperation Partner

Product Version V200R010

Issued by WRAN Product Import Department

Document Version 1.0

Guide to Customer’s Preparation for BTS3900A WCDMA Installation

Prepared by WRAN Product Import Department

Date 2008-08-26

Reviewed by Date

Reviewed by Date

Approved by Date

HUAWEI TECHNOLOGIES CO., LTD.2008-09-10

2023-04-18 HUAWEI Confidential , Total 46


Revision Record

Date Version Description Author

2008-08-26 1.0 First issue Zeng Zhihui

2023-04-18 HUAWEI Confidential Page 3, Total 46


Contents

1 About This Document...................................................................11

2 Introduction to Huawei Installation Process..................................12

3 System Installation Requirements of the BTS3900A.......................143.1 Introduction to the BTS3900A WCDMA........................................................................................................14

3.2 Site Requirements of the BTS3900A WCDMA..............................................................................................16

3.2.1 Site Selection Requirements of the NodeB............................................................................................16

3.2.2 Space Requirements of the BTS3900A..................................................................................................17

3.2.3 Operating Environment Requirements of the BTS3900A......................................................................19

3.3 Power Requirements of the BTS3900A...........................................................................................................19

3.4 Grounding Requirements of the BTS3900A...................................................................................................20

3.4.1 Grounding Network Pavement...............................................................................................................20

3.5 Transmission Requirements for the NodeB Site..............................................................................................21

4 Construction Preparations of the BTS3900A..................................234.1 Auxiliary Facilities Preparations for the BTS3900A Site................................................................................23

4.1.1 Concrete Base Requirements of the BTS3900A....................................................................................23

4.1.2 Preparing the Cable Racks......................................................................................................................24

4.1.3 Preparing the Grounding System............................................................................................................24

4.2 Preparing Auxiliary Facilities for the BTS3900A Antenna System................................................................27

4.2.1 Requirements for the Tower...................................................................................................................27

4.2.2 Preparing the Antenna Support on the Tower.........................................................................................28

4.2.3 Preparing the Antenna Support on the Rooftop......................................................................................29

4.2.4 Preparing the Feeder Window................................................................................................................35

4.3 Cable Requirements of the NodeB..................................................................................................................36

4.3.1 Requirements for Materials of the Indoor NodeB Cables......................................................................36

4.3.2 General Cabling Specifications for the NodeB......................................................................................37

4.4 Preparation of Personnel for the Installation...................................................................................................39

5 Appendix 1 Checklist for the Installation Preparations...................405.1 Acceptance Items for Power Supply................................................................................................................40

5.2 Acceptance Items for Surge Protection Grounding.........................................................................................41

5.3 Acceptance Items for the NodeB Antenna System..........................................................................................41



6 Appendix 2 Specifications of the BTS3900A...................................436.1 RF Specification..............................................................................................................................................43

6.2 Capacity Specifications....................................................................................................................................44

6.3 Engineering Specifications..............................................................................................................................45

6.4 Environment Specifications.............................................................................................................................45



Figures

Figure 3-1 Architecture of the WCDMA radio access network............................................................................14

Figure 3-2 Appearance of the BTS3900A cabinet................................................................................................16

Figure 3-4 Space requirements for installing the BTS3900A configured with the RF cabinet and power cabinet (unit: mm)..............................................................................................................................................................18

Figure 3-5 Space requirements for installing the BTS3900A configured with the RF cabinet, power cabinet, and extension cabinet (unit: mm).................................................................................................................................18

Figure 4-1 Concrete base cast for a single BTS3900A cabinet.............................................................................23

Figure 4-2 Grounding grid of the NodeB..............................................................................................................24

Figure 4-3 Grounding system of the NodeB equipment room (with dedicated rectifier).....................................25

Figure 4-4 Grounding of metal tower and buildings.............................................................................................26

Figure 4-5 Grounding bar of the NodeB...............................................................................................................26

Figure 4-6 Tower for telecommunication purpose................................................................................................27

Figure 4-7 Directional antenna support on a tower...............................................................................................29

Figure 4-8 Support for the omni-directional antenna on a tower..........................................................................29

Figure 4-9 Installing the antenna support on the rooftop......................................................................................31

Figure 4-10 Structure of the pole on the rooftop..................................................................................................32

Figure 4-11 Fixing the directional antenna on the rooftop (1)..............................................................................33

Figure 4-12 Fixing the directional antenna on the rooftop (2)..............................................................................33

Figure 4-13 Installing an omni-directional antenna..............................................................................................34

Figure 4-14 Installing an omni-directional antenna support.................................................................................35

Figure 4-15 Dimensions of the 12-hole feeder window (unit: mm).....................................................................35



Tables

Table 3-1 Climatic requirements...........................................................................................................................19

Table 3-2 Power supply requirements of the BTS3900A......................................................................................20

Table 4-1 Requirements for Materials of the Indoor NodeB Cables.....................................................................36

Table 4-2 Requirements for bending radius of the cables.....................................................................................37



1 About This Document

Thank you for choosing Huawei NodeB (BTS3900A).To ensure the smooth completion of installation, see the HUAWEI WDCMA BTS3900A Installation Preparation Guide, which will guide you through the preparations that need to be made before the installation. You are expected to make all the preparations described in this guide before Huawei technical staffs arrive on site, so that the equipment can be put into operation as soon as possible. This can ensure that you reap social benefits and economic interests at the earliest.

Before making the installation preparations, read the following contents carefully:

After you complete all the installation preparations, please contact the Huawei local representative office on time, so that Huawei can arrange technical staff to start the installation.

If the installation is implemented before the installation preparations are fully completed owing to some reason, you should arrange related staff to finish the uncompleted part as early as possible to ensure the smooth implementation of the project.

If the installation is started before the preparations are fully completed owing to some reason, and later installation cannot go on because of insufficient preparations, Huawei has the right to stop the installation. After all the preparations are made, both parties can discuss and arrange to restart the installation.

When you are making these preparations, you are welcome to consult Huawei representative office in the local area (local province or local region) at any time for any doubts.

Address of the Local Huawei Representative Office: _______________________________

Phone/Fax:_______________________________

Contact Person and Phone Number:



2 Introduction to Huawei

Installation Process

To strengthen understanding and for better cooperation between two parties, this section provides a brief overview of the Huawei equipment installation process. Huawei equipment installation process starts when the contract is signed and validated and ends when the equipment passes the final acceptance test and enters the maintenance period. The process is as follows:



This process shows that smooth completion of an installation project requires close cooperation between you and Huawei. We sincerely hope for smooth completion of the project.



3 System Installation

Requirements of the BTS3900A

3.1 Introduction to the BTS3900A WCDMAHuawei BTS3900A products are developed in compliance with 3GPP R99/R5/R6 FDD. Different BTS3900A products provide flexible WCDMA radio access solutions to meet specific coverage requirements in multiple scenarios, for example, urban area, rural area, along highway, along railway, and hot spots.

Figure 3-1 shows the Huawei architecture of the WCDMA radio access network.

Figure 3-1 Architecture of the WCDMA radio access network

RNC

RNC

WCDMA CS

WCDMA PS

Indoor NodeB Outdoor NodeB Mini NodeB / RRU

UTRAN

UE

UE

UE



The Huawei BTS3900A WCDMA is one of the outdoor macro NodeBs developed in compliance with 3GPP R99/R4/R5 FDD. The outdoor macro cabinet BTS3900A consists of the RF cabinet, APM30 power supply cabinet, APM30 battery cabinet, and APM30 transmission cabinet, as shown in Figure 3-1 and Figure 3-2.

Structure of the RF cabinet

Structure of the APM30 cabinet

A single BTS3900A supports up to 24 cells and 1,536 CEs in the uplink and 1,536 CEs in the downlink. It is applicable to urban areas, central business districts, and large-sized and medium-sized cities with very high potential for traffic growth.

The BTS3900A WCDMA cabinet is designed in compliance with the IEC297 standard. It is a white vertical cabinet. Figure shows the appearance of the BTS3900A WCDMA cabinet.



Figure 3-2 Appearance of the BTS3900A cabinet

Figure 3-3

3.2 Site Requirements of the BTS3900A WCDMA

The installation, commissioning, and operation of the BTS3900A are ensured only when the equipment room and installation space meet the site requirements. The site requirements of the BTS3900A involve the site selection, installation space, equipment room construction, and working environment.

3.2.1 Site Selection Requirements of the NodeBTo ensure the stable running of the NodeB over a long term, the site for the NodeB must meet the requirements for telecommunication network planning, communications technology, hydrology, geology, and traffic.

The specific requirements for site selection are as follows:



The site should not be exposed to excessive heat, dust, harmful gases, flammable or explosive materials, or unstable voltage.

The site should be located at a place where earthquakes or strong noise are unlikely to occur.

The site should be located far away from power substations, industrial boilers, and heating boilers.

The site should be far away from high-power radio transmitters, radar stations, or other interference sources. The interference field intensity should not be higher than the shielding specifications of the NodeB for useless radiation.

The equipment room for the indoor NodeB should be constructed at least 3.7 km away from the seaside or a salt lake. If this is not possible, the equipment room should be closed and air conditioned. In addition, avoid using salt soil as the building material for the room. Otherwise, the equipment that can be operated in extreme and unfavorable environment must be used.

The outdoor NodeB should be located more than 500 m away from the sea side.

The site should be far away from pollution sources. If this requirement cannot be met, select a site that is in the perennial upwind direction of the pollution source.

− The site should be constructed at least 5 km from heavy pollution sources such as a smelting plant or a coal mine.

− The site should be constructed at least 3.7 km from medium pollution sources such as a chemical plant, a rubber plant, or an electric plating plant.

− The site should be constructed at least 2 km from light pollution sources such as a food product factory or a leather product factory.

The air inlets of the communication equipment should be far away from the sewer pipe, septic tank, and sewage disposal pool. The air pressure inside the equipment room should be higher than the air pressure outside the equipment room. Otherwise, corrosive gases may enter the equipment room and corrode the components and circuit boards.

Livestock rooms or fertilizer warehouses cannot be used as the equipment room for the indoor NodeB. If this is not possible, it should be located at a place that is in the upwind direction of the livestock room or fertilizer warehouse.

It is recommended that the equipment room for the indoor base station be located on the second floor or above. If this requirement cannot be met, the ground for the equipment room should be at least 600 mm higher than the maximum flood level recorded in the area.

3.2.2 Space Requirements of the BTS3900AThe space for installing the BTS3900A must be planned in compliance with the space requirements to facilitate the later installation and maintenance.

Figure 3-1 and Figure 3-2 shows the space requirements for installing the BTS3900A configured with the RF cabinet and power cabinet.



Figure 3-1 Space requirements for installing the BTS3900A configured with the RF cabinet and power cabinet (unit: mm)

Figure 3-2 Space requirements for installing the BTS3900A configured with the RF cabinet, power cabinet, and extension cabinet (unit: mm)



3.2.3 Operating Environment Requirements of the BTS3900A

The operating environment of the BTS3900A consists of requirements related to climatic conditions, biological environment, and air purity specifications.

Climatic Requirements

Table 3-1lists the climatic requirements for the operating environment of the BTS3900A.

Table 3-1 Climatic requirements

Item Specification

Altitude ≤ 3500 m; in degraded use within the range of 3500 m to 4700 m (the ambient temperature decreases 1℃ when the height increases by 100 m)

Air pressure 70 kPa to 106 kPa

Temperature -40°C to +45°C (with solar radiation and APM30 heat exchanger)

-40°C to +50°C (with solar radiation and APM30 air filter)

Temperature variation rate ≤ 3℃/min

Relative humidity 5% to 100%

Absolute humidity 1 g/m3 to 30 g/m3

Protection level IP55

Biological Environment Requirements

The operating environment of the BTS3900A must meet the following biological requirements: No fungus or mildew should grow in the operating environment.

Air Purity Requirements

The air purity requirements related to the running environment are as follows:

There should not be any explosive, conductive, magnetic conductive, or corrosive dust in the air.

3.3 Power Requirements of the BTS3900ATo ensure the proper operation of the power system of the BTS3900A, the power supply of all the functional modules must comply with the related specifications. Table lists the power supply requirements of the BTS3900A.



Table 3-1 Power supply requirements of the BTS3900A

Power Permitted Range Remarks

200 V AC to 240 V AC 176 V AC to 290 V AC Single-phase AC input

200/346 V AC to 240/415 V AC, 50 Hz/60 Hz

176/304 V AC to 290/500 V AC, 45 Hz/65 Hz

Three-phase AC input

100/200 V AC to 120/240 V AC, 50 Hz/60 Hz

90/180 V AC to 135/270 V AC, 45 Hz/65 Hz

Dual-live-wire input

120/208 V AC to 127/220 V AC, 0 Hz/60 Hz

105/176 V AC to 150/260 V AC, 45 Hz/65 Hz

Dual-live-wire input

If the voltage stability does not meet the requirements, you need to use voltage regulators to ensure a proper power voltage range.

When AC power is led into the BTS3900A cabinet, the power system must meet the following requirements:

When planning the capacity of the AC power supply system, you should consider the working current and fault current of the equipment.

Each device should have an independent AC distribution protection device.

The current threshold of the distribution protection switch for the equipment should be greater than that for the lower-level equipment.

3.4 Grounding Requirements of the BTS3900AThe BTS3900A equipment installation must meet the grounding requirements to ensure stable running of the NodeB.

The PGND cable of the BTS3900A cabinet is connected to the external grounding bar. The green and yellow PGND cable is copper-based and plastic-insulated with a cross-sectional area of at least 25 mm2.

The combined BTS3900A cabinets must be interconnected through the green and yellow PGND cable to ensure equal electric potential. Note that the PGND cable is copper-based and plastic-insulated with a cross-sectional area of at least 16 mm2.

Fuses or switches are not allowed on the PGND cable.

The grounding terminals should be anti-corrosive and antirust. Connection of the PGND cable is secure.

The grounding bar should be located nearest possible to the NodeB equipment. The maximum distance permitted is 30 m. If the distance between the grounding bar and the NodeB equipment is greater than 30 m, reinstall the grounding bar nearby.

3.4.1 Grounding Network PavementTo ensure safe and reliable operation of the equipment, a good grounding system is essential. The basic grounding facilities should be paved before the installation of the NodeB to ensure the smooth implementation of the project.



1. According to the mobile base station lightning protection specifications of Ministry of Information Industry (MII), the preferred shape of the grounding network is the mesh shape. The size of a grid should be equal to or larger than 3 m x 3 m. The intersection point of grids should be connected with the vertical grounding body. The horizontal connection line (horizontal grounding body) of the grids should be soldered with the vertical grounding body. The soldering length should be twice of the overlapping length. The soldering point is at the place 200 mm away from the top of the vertical grounding body.

2. The vertical grounding body should be buried to the depth equal to or larger than 800 mm. (The depth is the distance between the bottom of the vertical grounding body to the ground.) The spacing between grounding bodies should be equal to or larger than 1.5 times of the length of the grounding body.

3. The grounding lead-in cables are soldered to the grounding network and two cables should be led out symmetrically. The length of each cable should be equal to or less than 30 m. The distance between the two points where the cables are led out should be equal to or larger than 5 m.

4. Anti-corrosive measures should be taken for each soldering point.

5. The grounding resistance should be equal to or less than 5 ohm. The testing method must conform to the requirements in YD2011-93 Appendix B. The chemical resistivity reduction mixture can be used to reduce the grounding resistance. The salt, however, is not recommended.

6. If the landform does not allow the use of the mesh-shape grounding network, other shape is also acceptable. At places where activities of human beings or livestock are frequent, voltage-sharing measures must be taken.

7. Requirements of grounding components:

− Vertical grounding body:Ф50 mm hot galvanized steel pipe (length: 2000 mm)

− or 50 x 50 x 5 mm hot galvanized steel angle (length: 2000 mm)

− Vertical grounding body: 40 x 4 mm hot galvanized flat steel. The length is determined by the requirement.

− Grounding lead-in:40 x 4 mm hot galvanized flat steel. The length is determined by the requirement.

−

3.5 Transmission Requirements for the NodeB Site

Before the site construction, the transmission devices and auxiliary devices should be prepared based on the practical application. Transmission requirements of the NodeB site involve the DDF, ODF, and transmission mode.

Requirements for the DDF/ODF

The trunk cables and optical cables on the NodeB side are connected to the transmission device through the DDF or ODF. The requirements for the DDF/ODF are listed as follows:

The delivered transmission cables and connectors match the connectors on the DDF/ODF on the transmission device side.

Before you install the NodeB, the DDF/ODF is installed and external trunk cables or optical cables are connected to the DDF/ODF



It is recommended that the copper wires be used to connect the DDF/ODF and the grounding bar of the equipment room.

Requirements for the Transmission Mode

Transmission resources should meet the upcoming requirements of the NodeB site and extra resources are reserved for capacity expansion.

If the RNC and the NodeB are deployed near the Metropolitan Area Network (MAN) or backbone network, they can be directly connected to the transmission network through the E1 or SDH ports in ATM or IP mode. There are restrictions on the maximum transmission distance for the trunk cables. Additional transmission devices are required if the trunk cables are longer than the corresponding maximum transmission distance.

If the NodeB is at the far end of the RNC and the MAN or backbone network, and is within the Line of Sight (LOS) of microwave transmission, the microwave transmission is used. The indoor units of the microwave transmission devices should be installed in the space for the transmission devices in the cabinet.

If the NodeB is at the far end of the RNC and the MAN/backbone network, and is not within the Line of Sight (LOS) of microwave transmission, the xDSL transmission is used. Huawei recommends that you install the xDSL transmission devices in the space reserved in the cabinet.



4 Construction Preparations of

the BTS3900A

4.1 Auxiliary Facilities Preparations for the BTS3900A Site

4.1.1 Concrete Base Requirements of the BTS3900AWhen the place for installing the BTS3900A cabinet is neither flat nor strong enough to hold the cabinet, a concrete base is required.

Figure 4-1 shows the concrete base cast for a single BTS3900A cabinet.

Figure 4-1 Concrete base for a single BTS3900A cabinet

When casting a concrete base, consider the impacts of the local geographical conditions. The requirements for the height of the concrete base are as follows:

Rain water or flood water cannot enter the cabinet.

The snow cannot cover the lowest air inlet on the cabinet.

Engineering specifications for the cast concrete base are as follows:

The height of the concrete base should be more than 200 mm.



The horizontal error of the cabinet should not be greater than 5 mm and the vertical error should not be greater than 5 mm.

4.1.2 Preparing the Cable Racks1. Cable racks are classified into indoor cable racks and the outdoor cable racks. The cable

racks should be installed before the installation of the NodeB.

2. The recommended specifications of the indoor cable rack are as follows: width: 400 mm; height: 2.4 m. The cable rack should be installed according to the engineering design.

3. Generally, the indoor cable rack is installed against a suspending lever. If the indoor cable rack is installed against a wall, a tripod or ground support can be used.

4. The outdoor cable rack consists of the horizontal cable rack and the vertical cable rack. The outdoor cable rack should be installed according to the engineering design.

5. The indoor cable rack is connected to the indoor grounding bar through cables. The outdoor cable rack is welded to the lightning rod of the building through the reinforcing steel bar, thus connecting to the antenna support. If required, wires should be added to improve electric connectivity between the cable racks.

4.1.3 Preparing the Grounding SystemThe grounding system of the NodeB consists of the indoor grounding system and the outdoor grounding system.

Figure 4-1 shows the grounding grid of the NodeB (the outdoor grounding system).

Figure 4-1 Grounding grid of the NodeB

The grounding grids of the power transformer, tower, and equipment room constitute an integrated grounding grid. (The grounding grid should be connected to the building and the reinforced concrete bars of the tower. Generally, the grounding grid should be connected to at least two reinforced concrete bars.)



The outdoor grounding ring can be laid out in L-shaped or C-shaped according to the field situation of the equipment room. If the soil conductibility is poor or there is little soil in the rocky area, it is recommended that the grounding extension style and concrete bridge be used. The cable embedded concrete bridge radiates outwardly through the grounding ring and the four corners of the tower grounding ring. The concrete bridge has strong hygroscopy. The recommended length of the concrete bridge is 10 m to 30 m.

It is recommended that the grounding stake be coated with hot galvanized steel. The specifications are as follows:

Steel pipe (Ф 50 mm, wall depth greater than 3.5 mm)

Angle steel (at least 50 mm X 50 mm X 5 mm)

Flat steel (at least 40 mm X 4 mm)

The proper length of the grounding stake is from 1.5 m to 2.5 m, and the interval is 1.5 to 2 times the length of the grounding stake). The space between the top of the grounding stake and the ground is at least 0.7 m. For cold districts, bury the grounding stake under the frozen soil.

The depth of the grounding ring must be 0.7 m under the concrete base.

You should determine whether to add resistivity reduction mixture based on the equipment room location and soil conditions.

Figure 4-2 Grounding system of the NodeB equipment room (with dedicated rectifier)

The equipment room is configured with a primary grounding bar that is connected to the grounding grid of all the equipment and the DC power inside the equipment room.



It is recommends that you use the galvanized flat steel of 40 mm x 4 mm or 50 mm x 5 mm as the grounding cable. The part of the grounding cable outside the earth should be protected against mechanical damage.

As shown in Figure 4-3, the outdoor grounding system consists of the tower grounding, feeder grounding, grounding grid, rooftop surge protection grounding bar, cable rack grounding, and outdoor grounding copper busbar.

Figure 4-3 Grounding of metal tower and buildings

Ground the feeder pipe when it is on the tower, and before it is connected to the cable rack and routed through the feeder window. If the tower is higher than 60 m, ground the feeder pipe in the middle of the tower. The outdoor grounding copper bar should be installed under the outdoor feeder window and be connected to the outdoor grounding ring. The feeders and indoor surge protector should be connected to the outdoor grounding copper bar.

Figure 4-4 shows the grounding copper bar.

Figure 4-4 Grounding bar of the NodeB

1 M8 bolt



4.2 Preparing Auxiliary Facilities for the BTS3900A Antenna System

4.2.1 Requirements for the TowerA tower for telecommunication purpose is required when the NodeB in a network covers a wide area and the antennas are installed at a height. Figure shows the tower for telecommunication purpose.

Figure 4-1 Tower for telecommunication purpose

The requirements for the tower are as follows:

The height of the tower depends on the field requirements of the NodeB.

Typically, the tower has an operating platform of one to three layers with a round or hexagon structure. The minimum diameter of the circle is 4 m and the spacing between two platforms is 6 m. One-meter-high guard rails are required on the platforms. The minimum weight-bearing capacity of the platforms is 150 kg/m2.

The tower must be able to carry 27 directional antennas and 27 7/8-inch feeders. Each antenna should weigh 30 kg with the front face area of 0.5 mm2. Each feeder should be 0.49 kg/m with the diameter 28 mm.

A ladder for maintenance should be installed on the tower. The reinforcing angle steel should be installed every 1 m on both sides of the ladder, and the angle steel should extend 0.5 m out of the ladder on either side.

A lightning rod should be installed 8 m above the upper platform to ensure that all the feeders on the tower are within the coverage of the lightning rod.

Even in the face of the strongest wind that blow once every 30 years, the maximum axial wobble and torsion of the tower body must be within ±1°.



The tower should be designed to resist one degree of seismic intensity over the limit stipulated in local regulations. When earthquake occurs, the tower can withstand the earthquake and devoid of any distortion that affects the quality of communication.

A cable rack that can bear the weight of a person should be installed on the tower.

Surge protection and lightning induction devices should be installed on the tower.

Solar energy lamps should be used for the tower.

Power cables with metal jackets should be used for the aeronautical lights that use AC power. Ensure that the metal jackets are grounded at the top of the tower and at positions where the cables are led into the equipment room.

Surge protection devices should be installed on the control cables of the tower lamps and on the phase lines of the power cables at the positions where the cables are led into the equipment room. The neutral lines are directly grounded.

The wind speed and earthquake intensity level comply with local stipulations.

4.2.2 Preparing the Antenna Support on the TowerThere are many types of antenna support. You need to select a suitable type according to the antenna type and installation scenario.

When installing the antenna support on the tower, adhere to the following principles:

1. The installation plane of the antenna support should be perpendicular to the horizontal plane.

2. The pole for the lightning rod should be installed separately on the tower. The lightning rod should be placed high enough to bring the protection areas of all the antennas below 45°.

3. The antenna support should be installed in the direction that does not affect the transmit/receive performance and direction adjustment of the antenna.

4. A stiffener is used to fasten the rotating lever. The expansion lever and the rotating lever should be cut into proper length. The cross-section should be welded with a cover for waterproofing.

5. The antenna support must not have any dry and open welds. It is recommended that the support be made of galvanized steel. The surface of the support should be coated with antirust paint.

6. For the directional antenna, the length of the pole depends on that of the antenna. In wide coverage application, high gain antennas are generally used. Such antennas are long, so it is recommended that the length of the pole be greater than 3 m and that the diameter range from 60 mm to 114 mm (generally 75 mm).For the uni-polarization antenna, the distance between the two diversities of the two antennas serving one sector should be at least 2 m.

Figure 4-1 shows the recommended directional antenna support on a tower.



Figure 4-1 Directional antenna support on a tower

7. Generally, an omni-directional antenna is a uni-polarization antenna. The distance between diversities should be at least 2 m. The length of the support lever of pole should be greater than 1.5 m. The pole must be made of 75 mm round steel and it should have minimum length of 1 m and a diameter of 60–114 mm. During installation, the pole should be flush with the fixing hoop of the antenna. The pole should not be installed at a very high position because the omni-directional antenna is long. The top of the antenna should be within the protection angle of the lightning arrester.

Figure 4-1 shows the recommended support for the omni-directional antenna on a tower.

Figure 4-1 Support for the omni-directional antenna on a tower

4.2.3 Preparing the Antenna Support on the RooftopThere are many types of antenna support. You need to select a suitable type according to the antenna type and installation scenario.



When installing the antenna support on the rooftop, adhere to the following principles:

1. The strength of the materials for the antenna support and pole should meet the requirements of antenna load capacity and wind load.

2. The connecting pieces for the stiffener should be installed in the positions where the regulation of the antenna orientation and tilt is not affected.

3. The antenna support should be perpendicular to the horizontal plane.

4. The base of the antenna support, the anchor of the stiffener, and their expansion bolts should be covered with concrete.

5. When a directional antenna is installed on the rooftop, a lightning rod should be installed on the antenna support, and the antenna support should be connected to the grounding grid of the building.

6. When an omni-directional antenna is installed on the rooftop, a lightning rod should be installed on a separate support.

7. If a lightning rod is installed on the support of the omni-directional antenna, the omni-directional antenna should be extended from the support for 1 to 1.5 m.

8. If there are enclosing walls on the rooftop, the antenna support can be installed on an enclosing wall. Ensure that the main supporting post is vertical to the surface of the rooftop. In addition, ensure that the antenna support is equipped with a surge protector and connected to the grounding grid of the building.

Preparing the Directional Antenna Support and Pole on a Rooftop

(1) For the uni-polarization directional antenna, because of the requirements for diversity spacing, the distance between the two poles supporting the two antennas should be at least 2 m.

(2) The length of the pole depends on that of the antenna. It is recommended that the length of the pole be greater than 2.5 mm and that the diameter range from 60 mm to 114 mm.

The main supporting post of antenna support should be longer than the antenna. The relation between h and d should meet the specifications illustrated in Figure 4-1 and listed in Table, where h indicates the valid vertical distance between the lower edge of the antenna and the rooftop in the direction that the antenna faces, and d indicates the distance between the edge of the rooftop in the direction that the antenna faces and the antenna support.



Figure 4-1 Installing the antenna support on the rooftop

Height Diameter

0.5 m 0 m to 2 m

1 m 2 m to 10 m

2 m More than 10 m

Note: The Height and Diameter in the table above is shown in Figure 4-2.



Figure 4-2 Structure of the pole on the rooftop

⑴ (1) Lightning rod for the antenna

(2) Main support (3) Stiffener (4) Base of the antenna support

(5) Use concrete to cover and fix.

(6) Solder the stiffener to the main supporting post.

(7) Fix the stiffener to the ground.

(8) Ladder

Figure 4-3 and Figure 4-4 show how to fix the directional antenna on the rooftop.



Figure 4-3 Fixing the directional antenna on the rooftop (1)

Figure 4-4 Fixing the directional antenna on the rooftop (2)



Preparing the Omni-Directional Antenna Support and Pole on a Rooftop

(1) Generally, an omni-directional antenna is a uni-polarization antenna. To meet the requirements of diversity spacing, ensure that the distance between two antenna poles is greater than 2 m.

(2) After installation, the top of the pole should be flush with the fixing hoop in the lower part of the antenna. Therefore, the omni-directional antenna pole does not need to be long. The length of the pole only needs to meet the specifications.

(3) Generally, the omni-directional antenna pole should have a diameter of 60 mm to110 mm and should be made of 75 mm round steel.

(4) The omni-directional antenna is long and therefore the antenna top is much higher than the pole top. In this case, the surge protector should not be welded directly to the pole but should be installed separately in the middle of the two antenna poles. Ensure that the top of omni-directional antenna is within the protection angle of the surge protector, as shown in Figure 4-5.In some cases, the surge protector may not be prepared independently due to limited conditions. Instead, you can use the following method shown in Figure 4-6.

Figure 4-5 and Figure 4-6 show the installation of omni-directional antenna.

Figure 4-5 Installing an omni-directional antenna



Figure 4-6 Installing an omni-directional antenna support

4.2.4 Preparing the Feeder WindowFeeders are led into the equipment room through the feeder window. There are two types of feeder window: 12-hole feeder window and 27-hole feeder window. The 12-hole feeder window is commonly used, as shown in Figure 4-1.The feeder hole should be 100 mm higher than the indoor cable rack.

Figure 4-1 Dimensions of the 12-hole feeder window (unit: mm)

When installing the feeder window, stick to the following principles:

1. The feeder window should be installed nearest possible to the cable rack.



2. The feeder window should be installed on the wall either indoors or outdoors, but the side with steel hoops must face outdoors.

3. If feeders are led into the room from the rooftop, the feeder window is installed on the roof and the side with steel hoops must face outdoors.

4.3 Cable Requirements of the NodeB

4.3.1 Requirements for Materials of the Indoor NodeB Cables

Generally, the power cables, PGND cables, and transmission cables are delivered with the equipment. If you prepare these cables yourself, the cables should comply with related requirements.

Table 4-1 Requirements for materials of the indoor NodeB cables

Cable Specification

Power cable The power cables without jackets should be insulated with PVC materials. If the power cables are required to be weatherproof or high/low-temperature resistant, materials such as silicone rubber, FEP, or PFA can be used for insulation.

The power cables with PVC jackets should be insulated through PVC or XLPE materials. If there are fire-resistant requirements such as halogen-free and low smoke, use power cables with LSZH jackets.

The high/low-temperature resistant power cables should be coated with FEP jackets.

Symmetric cable

The symmetric cables should be insulated through PE, PP, or PVC materials and coated with PVC or PE jackets. If there are fire-resistant requirements such as halogen-free and low smoke, use power cables with LSZH jackets.

Coaxial cable The coaxial cables should be insulated through PE, PTFE, or FEP materials and coated with PVC or FEP jackets.

PGND cable The PGND cables should be copper-based and insulated with green and yellow plastic jackets.

When selecting the indoor cables, you should consider the fire-resistant requirements. Weather proofing requirements for the indoor cables are not high. Thus, use cables coated with PVC jackets as indoor cables.

If fire-resistant requirements for the cables are high, use cables that are insulated with fire-resistant materials such as PE or PVC and coated with fire-resistant PVC jackets.

If there are strict requirements for smoke density, and transmittance of the halogen gas released after the cables caught fire, use cables coated with comparatively expensive LSZH jackets.

Insulating materials and protection jackets of the cables must comply with the Restriction of Hazardous Substance (RoHS) requirements.



The cable materials can either be customized or comply with local regulations.

4.3.2 General Cabling Specifications for the NodeBThe power cables and signal cables should be routed in compliance with the cabling specifications to avoid electromagnetic interference to the signals.

Table 4-1 Requirements for bending radius of the cables

Cable Requirements for the Bending Radius

Feeder 1/2" feeder ≥ 127 mm

7/8" feeder ≥ 250 mm

5/4" feeder ≥ 380 mm

13/8" feeder ≥ 510 mm

Jumper 1/4" jumper ≥ 35 mm

1/2" jumper ≥ 50 mm

Single-jacket cable 2.5 mm ≤ D ≤ 4.5 mm R ≥ 2 D

D ≥ 4.5 mm R ≥ 3 D

Two-wire or multi-wire cables with/without shielding layers

6.5 mm ≤ D ≤ 12.5 mm R ≥ 2 D

D ≥ 12.5 mm R ≥ 3 D

Optical cable R ≥ 20 D

In the preceding table, D refers to the diameter of the cable jacket and R refers to the bending radius of the cable.

Requirements for Binding Cables

Cables of different types should be routed separately and cannot be kinked.

The cables should be bound tightly and neatly without damage to cable jackets.

The cable ties should be at an interval of 200 mm and face the same direction. The cable ties at the same position should be placed at the same level. The cut surface of the cable ties should be smooth without sharp projections.

Labels or nameplates should be attached to the installed cables.

General Cabling Requirements

Cables of different types should be routed separately.

Cables of different types cannot be crossed.

The spacing between cables of different types should be greater than 30 mm when the cables are routed parallel in the cabinet. The spacing between cables of different types should be greater than 100 mm when the cables are routed parallel outside the cabinet. If such requirements cannot be met, the cables should be separated with specific objects.



Cabling Requirements for Power Cables and PGND Cables

The power cables and PGND cables should be routed in compliance with the engineering design and general cabling specifications.

If the cable is not long enough, replace the cable. Do not add connectors or solder joints to lengthen the cable.

The cables are insulated if they are bound and routed on the metal cable rack.

Fuses or switches cannot be installed on the cables.

The-48 V power cables and GND cables should be bound together.

Both ends of the grounding cables should be anti-corrosive and anti-rust. Connections of the grounding cables should be secure.

The low-voltage AC power cable for the NodeB should be led through a metallic conduit and buried in the ground for at least 50 m before it is led into the equipment room. If the AC power cable is shorter than 50 meters, it should be completely routed under the ground. If such cables are routed overhead and led into the room, surge protection for the connectors of the AC power cables is seriously affected.

The PGND cable should be buried completely in the ground or routed indoors. The PGND cable cannot be routed overhead outdoors before it is led into the equipment room.

Cabling Requirements for E1/T1 Cables

The optical cables should be routed in compliance with the engineering design and general cabling specifications.

The E1/T1 cables cannot be routed overhead outdoors.

If the E1/T1 cables are routed outdoors, coat the E1/T1 cables with PVC jackets and route them underground based on the site conditions.

If the E1/T1 cables routed outdoors are longer than 5 m, a Surge Protection Box (SPB) is required.

The proper cable surpluses should be reserved when the E1/T1 cables are curved.

The idle wires of the E1/T1 cables should be grounded properly in the equipment room.

Cabling Requirements for Optical Cables

The optical cables should be routed in compliance with the engineering design and general cabling specifications.

Proper cable surpluses should be left at the turning of the optical cables.

Do not stretch, step over, or place heavy objects on the optical cables. Keep the cables away from sharp objects to avoid damage. The optical cable that is curved or pressed or the optical connector which is damaged cannot be used.

Extra optical cables should be coiled on the specified device such as the fiber coiler. Coil extra optical cables properly. Do not bend the cables forcibly to avoid damaging the cables.

Use protection tubes to coat the bare fibers.

The idle connectors of the optical cables should be covered with dustproof caps.

If one end of the optical cable is connected to an optical device, do not look directly at the end face of the optical connector. Otherwise, you may damage your eyes.

Fill soft materials such as fireproof cottons in the optical cable inlets at the top of the cabinet to protect the optical cables.



You need to check whether the optical connectors are clean before installation. If the optical connectors are dirty, clean them by using the dustfree cloth or fiber cleaner.

4.4 Preparation of Personnel for the Installation

The equipment installation process is also a process of on site training. It is recommended that the maintenance personnel participate in the training. In this way, the maintenance personnel can get familiar with the equipment as soon as possible.



5 Appendix 1 Checklist for the

Installation Preparations

5.1 Acceptance Items for Power Supply

Item Test Result Specification Result Remarks

DC power supply -48 V DC power supply

-38.4 V DC to -57 V DC

+24 V DC power supply

+21.6 V DC to +29 V DC

AC power supply Single-phase AC power

176 V AC to 290 V AC.

Three-phase AC power 176 /304 V AC to 290/500 V AC.

110 V AC dual-live-wire 90/180 V AC to

135/270 V AC, 45 Hz/65 Hz

or 105/176 V AC to 150/260 V AC, 45 Hz/65 Hz

Standby diesel Recommended Good

Power cables Route the –48 V power cables into the PDF or the junction box.

Good

Power alarms Alarms related to power cut and power supply faults can be reported.

Good



5.2 Acceptance Items for Surge Protection Grounding

Acceptance Item

Methods and Requirements

Specification Result Remarks

Main grounding bar and sub-grounding bars

The distance between the copper bar and the copper cable should be short and the PGND cable should be thick.

The installation is complete and the contact is proper.

The PGND cables of all devices are connected to the same grounding busbar.


Cross-sectional area of the PGND cable

The PGND cables connecting the BTS3900A cabinet and the .

Not less than 25 mm2

Equipotential cables between the BTS3900A cabinets

Not less than 16 mm2

Grounding resistance Combined grounding NodeB grounding: less than 10 ohm.

PGND cable Route the grounding cable into the DC PDF or the junction box.

Good

Feeder grounding Grounding clips are installed at an interval of 20 m on the feeder. The feeder is respectively grounded 0.5 m to 1 m away from the tower and the outdoor cable rack.




5.3 Acceptance Items for the NodeB Antenna System

Serial Number.

Item Specific Requirements Result Remarks

1 Tower The tower is ready for use.

2 Antenna support and pole

They should meet the requirements for azimuth of the antenna.

The pole should meet the requirements for the length of the antenna.

The pole should meet the requirements for the load capacity and wind load.

3 Outdoor cable ladder

The outdoor cable ladder is ready for use.

The cable ladder on the tower should be suitable for routing cables.

The cable rack (bridge) should meet the requirements.

4 Pole

The pole is installed.

The position of the pole should meet the requirements.

The pole should meet the requirements for the length of the antenna.

The pole should meet the requirements for the load capacity and wind load.

The concrete base for the GPS antenna is ready for use.

5 Outdoor cable rack

The outdoor cable rack is ready for use.

Material of the cable rack should meet the requirements.

The cable rack should be properly grounded.

Fill in the grey part in the table above when the antenna is installed on the tower platform.



6 Appendix 2 Specifications of the

BTS3900A

The specifications of the DBS3900A cover the RF, capacity, engineering, environment, and other specifications.

6.1 RF Specification

Item Specification

Frequency band

2100 MHz

RX band:1920 MHz to 1980 MHz

TX band:2110 MHz to 2170 MHz

Output power The RRU3804 supports four carriers. The output power of the RRU3804 at the antenna connector is 80 W.

Maximum output power = Maximum output power of the PA - Internal losses. The maximum output power is measured at the NodeB antenna connector.

One-carrier configuration: 60 W per carrier

Two-carrier configuration: 40 W per carrier (1001 configuration: 20 W per carrier)

Four-carrier configuration: 20 W per carrier

Receiver sensitivity

Frequency band 1-way receiver sensitivity (dBm)

2-way receiver sensitivity (dBm)

Description

Band I (2,100 MHz)

-125.8 -128.6 As recommended in 3GPP TS 25.104, the receiver sensitivity is measured at the antenna connector on condition that the channel rate reaches 12.2 kbit/s and the BER is not higher than 0.001.

-126.5 -129.3 The receiver sensitivity (at the central frequency point) is measured at the antenna connector on condition that the AMR service at 12.2 kbit/s is used and the BER is not higher than 0.001.



Item Specification

Band II (1,900 MHz) and Band V/VI (850 MHz)

-125.3 -128.1 As recommended in 3GPP TS 25,104, the receiver sensitivity (full band) is measured at the antenna connector on condition that the channel rate reaches 12.2 kbit/s and the BER is not higher than 0.001.


Other bands -125.6 -128.4 As recommended in 3GPP TS 25.104, the receiver sensitivity (full band) is measured at the antenna connector on condition that the channel rate reaches 12.2 kbit/s and the BER is not higher than 0.001.


6.2 Capacity Specifications

Item Specification

Capacity 24 cells

Maximum configuration:6 x 4, 3 x 8

Uplink:1536 CEs

Downlink:1536 CEs



6.3 Engineering Specifications

Item Specification

Dimensions (height x width x depth)

RF cabinet:700 mm x 600 mm x 480 mm

APM30 cabinet:700 mm x 600 mm x 480 mm

Transmission cabinet:700 mm x 600 mm x 480 mm

Weight (kg) RF cabinet:≤ 55

APM30 cabinet:≤ 65

WRFU:≤ 12

3 x 1:≤ 165 (without batteries)

In full configuration:

≤ 210 (RF cabinet wit six WRFUs and without the battery)

≤ 165 (RF cabinet wit three WRFUs and without the battery)

Input power 220 V AC single-phase power cable:176 V AC to 290 V AC

220 V AC three-phase power cable:176/304 V AC to 290/500 V AC

110 V AC dual-wire power cable

-48 V DC, voltage range:-38.4 V DC to -57 V DC

Power consumption Configuration Typical power consumption

Maximum power consumption

3 x 1 630 W 740 W

3 x 2 730 W 970 W

3 x 3 950 W 1300 W

3 x 4 1220 W 1580 W

6.4 Environment Specifications

Item Specification

Temperature -40°C to +45°C (with solar radiation of 1,120 W/m2 and APM heat exchanger)

-40°C to +45°C (with solar radiation of 1,120 W/m2 and APM air filter)

Relative humidity 5% RH to 95% RH

Absolute humidity 1 g/m3 to 30 g/m3

Air pressure 70 kPa to 106 kPa



Item Specification

Protection degree Battery cabin of the RF cabinet with three RFUs: IP54

Direct-ventilation battery cabinet: IP54

Others: IP55


guide to customer’s preparation for bts3900a wcdma installation-20080826-c-1.0

Documents

bts3900a site

grounding requirements

bts3900a antenna system

power requirements

site requirements

single bts3900a cabinet

space requirements

cable requirements