UMTS RNS I 05 20090530-NodeB(B8200 RRU)Installation Guide-69

UMTS_RNS_I_05_20090530 UMTS RNS I 05 20090530 NodeB (B8200 RRU) Installation Guide

ZTE University

Content

Overview B8200 Installation RRU Installation

Concepts about Distributed Base Station 

It is baseband data that is tranmitted between BBU and RRU. Both intermediate frequency and radio frequency are processed d iin RRU RRU.  BBU and RRU transmits data through optical fiber, significantly simplifying project construction.  Concept of baseband pool. Node B capacity increases.

Iubb 接口

IIubb 接口板

主控和 时钟

室内单元(BBU)

基带处 理单元

数字中频 （对外中频接口 为模拟信号 ）

收发信单元 TRX

…

射频拉远单元 (RRU)

功放 和 低噪放

……

Concepts about Distributed Base Station

Antenna Pole

Feeder

Optical fiber

Difference between BBU+RRU and General Node B 

A distributed base station consists of two separately-developed, mutually-independent parts. It uses optical fibers instead of many radio frequency cables to reduce feeders and save costs significantly. This results in decreased project costs, improved networking flexibility, and convenient installation.

BBU+RRU - A More Effective Way to Deal with Equipment Room Shortage Setup Method  Use the B8200 + RRU networking mode;  Place the baseband pool equipment in the 19" rack, or mount it on the wall in the existing equipment room;  Lay the antenna feeder plane optical fiber from the baseband ppool equipment q p room to the pplanned 3G site; Use outdoor RRU at the planned 3G site for coverage.

Advantages  Full use of the existing equipment rooms, no need for new ones;  Strong upgrade capability; low-loss low loss feeders;  No need for new transmission networks.

RET

ZXWR series RRUs

ZXWR B8200

It effectively solves the problem of equipment room shortage shortage.

BBU+RRU Base Station Solves Feeder Overlength Problem  

Signal loss in feeders will result in degraded coverage performance. The 2G Hz radio frequency signal travels in feeders at a loss of 7dB/100 and 7dB/100m, d 900M H Hz 4dB/100 4dB/100m.  Generally, the feeder length of 3G sites is 50 meters, with a signal loss of about 4dB.  RRU makes RF be p possibly y closest to the antenna to minimize the signal loss in feeders.  By using BBU+RRU, signal loss in feeders can be reduced to less than 1dB. RET Base station ante nn a

7/16’’ female R F conne ctor 1/2’’ super flexi ble j umper Outdoor groun ding cable cl ip Feeder cl ip BT S equip ment room

7/8’’ main feeder cable, w ith 7/16’’

1/2’’ super flexible jum per Lightning arr ester

fem ale R F connectors at both si des

Outdoor lightning pr ot ec tio n

ZXWR series RRUs

groun ding clip

N O D E B

F eeder cable w ind ow Indoor gro unding cabl e c lip

ZXWR B8200

Summary of ZTE BBU+RRU Networking Mode 

The BBUB+RRU networking mode saves equipment room space, reduces signal loss in feeders and increases signal gain. It also enables easy centralized management and maintenance and generally saves 20% construction cost and 20% operation and maintenance cost.

Network Evolution-Based Soft Base Station Solution  

Benefits to Equipment Suppliers  It saves development cost and shortens time to market.  Full Full-range range standard interfaces increases equipment compatibility.  It improves equipment quality and stability to minimize O&M cost.  The modular design g enhances equipment q p expandability.  It is helpful to new function development and new technology application.

Benefits to Operators  A 3G network can be easily set up through software upgrade, featuring fast speed, high quality and low cost.  The 2G network and 3G network share the same physical equipment for easy evolution and less TCO.  Resources are fully shared, so that the 2G network and 3G network can develop in a balanced manner.  Two networks are in centralized management to save O&M cost.  It is helpful to new business development and increases operating earnings.  Full-range standard interfaces enable more flexible g networking.

EDGE LTE

EDGE Phase II GSM

HSPA

UMTS

HSPA+

GPRS EDGE UMA

Initial, HWSW Investment

WiMAX

Evolution, SW Investment

Features and Advantages of SDR Soft Base Station SDR Base Station - Software Defined Radio Base Station 

Single cabinet

Features of SDR base station: 

The 2G-3G base stations share cabinets.



The 2G-3G base stations share radio frequency modules. This is achieved by software configurations.

 New-generation RF modules and baseband modules

RU RU RU

Software configurations support 2G or 3G processing.

2G/3G BB 2G BB 3G BB Module sharing



 Intelligent architecture.

The 2G-3G base stations share baseband modules. This is achieved by software configurations.



The 2G-3G base stations share network management.



The 2G-3G base stations share antenna feeder systems.

Advantages of SDR Base Station 

It solves the capacity balance problem between GSM network and WCDMA network.



It reduces the overall network TCO.



It meets the requirements for future network evolution and spectrum sharing.

Introduction of ZTE Series Soft Base Stations Indoor type

Outdoor type

Baseband pool

Remote Radio Unit (RRU)

BBUB B8036

B8136

Technical Characteristics:       

BBUC

850M RRU 900M RRU 1800M RRU 1900M RRU 2100M RRU

It fulfills hardware dual-mode functions and soft base station functions at all possible frequency bands. GSM and WCDMA share baseband boards. Each radio frequency q y module supports pp smooth configuration g from six GSM carriers to three WCDMA carriers. The transmitting power supports two configurations, 40W and 60W, with a power amplifier efficiency of up to 40％. In terms of evolution, it supports hardware compatibility and evolution to LTE. It can process 36 carrier frequencies under the GSM mode. It supports up to S444 or S222222 under the WCDMA mode.

SDR Is Suitable for Various Networking Senarios. Example: 900MHz and 2100MHz applications Application Type

SDR Base Station Configuration

1 2 3

GSM 900MHz

Configure RU modules to GSM 900MHz RF units.

UMTS 2100MHz

Configure RU modules to UMTS 2100MHz RF units.

UMTS 900MHz

Configure g RU modules to UMTS 900MHz RF units.

4

GSM900 + UMTS 2100MHz

5

GSM900 + UMTS 900MHz

Configure partial RU modules to GSM 900MHz RF units. Configure partial RU modules to UMTS 2100MHz RF units. Configure RU modules to support GSM and UMTS900MHz RF units.

SDR base station can help operators operate GSM and WCDMA in one network.  Traditional T diti l 2G 2G-3G 3G h hybrid b id networking t ki



SDR b d 2G SDR-based 2G-3G 3G h hybrid b id networking t ki



Two networks for physical equipment (radio side).



One network for physical equipment.



One network for operation.



One network for operation.



Two networks for operation and maintenance.



One network for operation and maintenance.

Typical Applications of BBU+RRU

Content

Overview B8200 Installation RRU Installation

B8200 Installation   

B8200 Installation Modes B8200 Cable Types B8200 Cabling Modes

B8200 Installation  

B8200 (3G) supports two installation modes: indoor and outdoor. B8200 Dimensions and Appearance Equipment

Dimensions (W×D×H)

Weight

Power Consumption

B8200

482.6mm×197mm×88.4mm

8.5kg

340W

Fiber Switch Board (FS)

GSM baseband board (UBPG) / WCDMA baseband board ((BPC))

Power module (PM)

Fan module (FAN)

Environment alarm board (SA)

Control and Switch Board (CC)

B8200 Installation 

B8200 Board Introduction:

Abbreviation

Explanation

Description

PM

Power Module

The power module provides power supply for boards. One power module is configured by default. A 1+1 backup is optional.

SA

Site Alarm Module

This board integrates environment monitoring and E1 interface functions and provides six input and two output channels of dry contact monitoring. It also provides eight E1/T1 interfaces.

Control and Clock Module

It switches media flow and control flow, processes clock signals, and manages subracks. The panel provides GE interfaces (optical and electrical optional) for transmission at the Iub interface. It also provides a GPS antenna interface. interface One CC is configured by default. A 1+1 backup is optional.

FSM

Fabric Switch Module

This board mainly switches IQ signals. Each board supports six fiber interfaces for the connection with RU modules. Depending on the number of the fiber interfaces required, at most two b boards d can be b configured. fi d

BPC

Baseband Processing Board, Type C

GSM and WCDMA use different baseband boards (uBPC or BPC). One uBPC supports 12 TRXs.

FAN Module

Located at one side of the subrack, subrack this board is used for heat dissipation.

CC

FA

B8200 Installation Modes      

Indoor Installation Installation on 19-inch floorstanding mounting support Installation on 19-inch 7U wall mounting support On-wall installation Outdoor Installation Working with W121 M01 integrated power cabinet

Indoor Installation (I) 

  

Install the B8200(3G)on a 19-inch floorstanding mounting support,which should be no less than 400 mm away from the front row of equipment. The post of the mounting support (front) should be no less than 350 mm away from the rear wall or the behind row of racks. The distance between any side of the mounting support and the walls or other racks should be no less than 100 mm. Install the B8200(3G) at a height of one meter, with a space of 2U left between SWITCH and B8200(3G), and 1U between other equipment. See the installation layout for details. A pallet is a must when intalling the B8200(3G). The installation of the pallet is shown in the figure below. The dimensions of the floorstanding mounting support are 520 mm×385 mm×1600 mm (L×D×H).

7 6 5 4 3 2 1 No.

Bottom rung Flat washer (M12) Hex bolt (M12 × 25) Flat washer (M10) Hex bolt (M10 × 20) Support Top rung Name

2 8 8 4 4 2 2 Quantity

Remarks

Indoor Installation (II)



  

Note: A space of at least 400 mm should be reserved for maintenance in front of the equipment. Any side of the cabinet should be no less than 100 mm away ffrom th the walls. ll

The dimensions of the 19-inch 7U wall mounting support are 500 mm×360 mm×360 mm (W×D×H), with a weight of about 6 kg. When two B8200s(2G) are required required, install them according to the installation layout 1 1. When one B8200(2G) is required, install it according to the installation layout 2.

Indoor Installation (III) 

If the wall is too thin (or made of sand or wood) to provide enough bearing capacity, it is recommended to make a support or fix fi a wooden d plate l t tto th the wallll on site, it as shown h in i the th fi figure below.

Indoor Installation (IV) 

Wall mounting may be considered if possible possible, as shown in the figure below.

Outdoor Installation 

Outdoor Installation of B8200(3G) - W121 M01(7U)

Model

7U Space Allocation

Outdoor Installation   





Use W121 M01. Install the B8200(3G) in the W121. See W121 space allocation for details. There is a space of 7U/9U in the W121. Check to see if the ventilation plate on th right the i ht side id iis removed db before f iinstalling t lli th the B8200(3G) B8200(3G). If nott ((as shown h iin the figure below), do not install the B8200(3G) and other equipment until removing the ventilation plate. It is required to put the removed ventilation plate and the blank panel in the empty battery box below. The W121 does not support pp back-to-wall installation. A space p of more than 500 mm should be reserved in the behind for the convenience of input/output power cable maintenance, and 500 mm on the left and right for the external air conduits of the heat exchanger. The distance between two W121s should be larger than 500 mm. Solve any floor bearing capacity-related capacity related problem according to the structure analysis report.

Right-side vents of the 7U space

B8200 Cable Types         

DC power cable Outdoor optical fiber SA panel cable Dryy contact alarm cable Power supply monitoring cable E1 cable Ethernet cable GPS feeder Grounding Cable

B8200 Cable Types 

1. DC Power Cable



Application: It is used to connect the external -48VDC power supply into the equipment.  Use it to connect the power supply equipment to the power module FM of the B8200(3G).  Connect B1 to the protective grounding terminal of the B8200(3G). Connect B2 and B3 to the DC power cabinet.  The power cable connections are shown in the table below: B2

－48 V GND

Voltage: g 0 V DC Max. power: 300 W

A1

Brown conductor

B3

－48 V

Voltage: －48 V DC Max. power: 300 W

A2

Blue conductor

B8200 Cable Types 

2. Outdoor Optical Fiber



The outdoor optical fiber is used to connect B8200(3G) and RRU and transmit the data between B8200(3G) and RRU. RRU End A of the optical fiber is a wateroroof optical interface that connects with RRU; end B is an LC optical interface that connects with the optical interface of the FS panel. From right to left, the FS panel provides optical interfaces including No. 0, 1, 2 3 2, 3, 4 4, and dN No. 5 5. Th The RRU off S1 connects t with ith No. N 0 optical ti l interface; i t f the th RRU of S2 connects with No. 1 optical interface; and so on.





The anti-pull wire fastener of the optical fiber must be cut from the root, as shown in the figure below.

B8200 Cable Types 



3. SA Panel Cable

End A of the cable is an SCSI50 plug that connects with the corresponding port on the SA panel. End B1 is a DB44 plug (connecting with E1/T1), end B2 being RS232 connector (DB9), end B3 being dry contact connector (DB25), and end B4 being grounding end.

B8200 Cable Types 

4. Dry Contact Alarm Cable DB25 Pin Definition

Number of Dry Contacts

Cable Color

DB25_1

NODEB_IN1P

White

DB25_14

NODEB_IN1N

Blue

DB25_2

NODEB_IN2P

White

DB25_15

NODEB_IN2N

Orange

DB25_3

NODEB_IN3P

White

DB25_16

NODEB_IN3N

Green

DB25_4

NODEB_IN4P

White

DB25_17

NODEB_IN4N

Brown

DB25_5

NODEB_IN5P

Red

DB25_18

NODEB_IN5N

Blue

DB25_6

NODEB_IN6P

Red

DB25_19

NODEB_IN6N

Orange

DB25_7

NODEB_IN7P

Red

DB25_20

NODEB_IN7N

Green

DB25 8 DB25_8

NODEB IN8P NODEB_IN8P

Red

DB25_21

NODEB_IN8N

Brown

B8200 Cable Types 

4. Dry Contact Alarm Cable



When the B8200(3G) monitors one indoor lightning protection box: Only the first four pairs of cables are used as input dry contact cables, as shown in the figure below.

White Blue

White Orange White Green

White Brown

B8200 Cable Types 

4. Dry Contact Alarm Cable



When the B8200(3G) monitors two indoor lightning protection boxes: The left three ways of input dry contact cables connect with the first lightning ptotection box, and the right three ways connect with the second, d as shown h iin th the fifigure b below. l

Short Circuit

Short circuit

White Blue White

Orange White Green

White Brown

Red

Blue Red Orange

B8200 Cable Types 

5. Power Supply Monitoring Cable



One end DB9 ((M)) of the B8200(3G) ( ) RS232 power p supply pp y monitoring g cable connects with the B2 (DB9) part of the SA panel cable; the other end DB9 (F) connects with the port 232 of the DC power cabinet (H151 or H900 or T601). The power supply monitoring cable is shown in the figure below. Cable specifications: 1m 1m, 2m 2m, 5m 5m, 8m 8m, 10m 10m, and 15m 15m.





For uncustomized RS232 cables,, it is required q to make the DB9 (F) ( ) on site according to the following cable sequence. DB9 (Female)

Color of End B2 Cables

DB9_2

Blue

DB9_3

Orange

DB9_5

Weld both white cables together.

B8200 Cable Types 

Installation of Power Supply Monitoring Cable in W121(7U) ( )

Front Panel Wiring

R Panel Rear P l Wiring Wi i

B8200 Cable Types 

6. E1 Cable



If the 120-ohm E1 transmission mode is used at the site, connect the DB44 connector at end A of the 120 120-ohm ohm E1 cable to the B1 jack of the SA panel cable. cable For end B, make a DB15 connector on site according to the following cable sequence and connect it to HDSL. Note: Both the seventh and the eighth pairs of E1 cables should be left unconnected t d ffor acting ti as th the DB9 connector t th thatt receives i clock l k signals i l ffrom NSN and providing clock signals to the B8200(2G) respectively.



Signal Definition

I_RING_ 0

TIP_0

O_RING _0

TIP_0

I_RING_ 1

TIP_1

O_RING _1

TIP_1

I_RING_ 2

TIP_2

O_RING _2

TIP_2

I_RING_ 3

TIP_3

O_RING _3

TIP_3

Pin No. (End A)

22

23

24

25

1

2

3

4

5

6

7

8

9

10

11

12

Cable No.

Blue/1 red

Blue/1 black

Pink/ 1 red

Pink/1 black

Green/ 1 red

Green/1 black

Yellow/1 red

Yellow/1 black

Grey/1 red

Grey/1 black

Blue/2 red

Blue/2 black

Pink/2 red

Pink/2 black

Green/2 red

Green/2 black

Signal Definition

I_RING_ 4

TIP_4

O_RING _4

TIP_4

I_RING_ 5

TIP_5

O_RING _5

TIP_5

I_RING_ 6

TIP_6

O_RING _6

TIP_6

I_RING_ 7

TIP_7

O_RING _7

TIP_7

Pin No. (End A)

13

14

43

44

39

40

41

42

35

36

37

38

31

32

33

34

Cable No.

Yellow/2 red

Yellow/2 black

Grey/2 red

Grey/2 black

Blue/3 red

Blue/3 black

Pink/3 red

Pink/3 black

Green/3 red

Green/3 black

Yellow/3 red

Yellow/3 black

Grey/3 red

Grey/3 black

Blue/4 red

Blue/4 black

1 (IN0) Blue/1 red

2 (OUT0) Blue/1 black

Pink/1 red

Pink/1 black

3 (IN1) Green/1 red

Green/1 black

Cable Pair Sequence (End B) 9 (IN4) Yellow/2 red

Yellow/2 black

10 (OUT4) Grey/2 red

Grey/2 black

4 (OUT1) Yell ow/ 1 red

11 (IN5) Blue/3 red

Blue/3 black

Yellow/1 black

12 (OUT5) Pin k/3 red

Pink/3 black

5 (IN2) Grey/1 red

6 (OUT2) Grey/1 black

13 (IN6) Green/3 red

Green/3 black

Blue/2 red

Blue/2 black

14 (OUT6) Yellow/3 red

Note: Blue/1 red means there is one red spot on the blue cable; and so on.

Blue/1 red means there is one red spot on the blue cable; and so on.

Yellow/3 black

7 (IN3)

8 (OUT3)

Pink/2 red

Pink/2 black

15 (IN7) Grey/3 red

Grey/3 black

Green/2 red

Green/2 black

16 (OUT7) Blue/4 red

Blue/4 black

B8200 Cable Types 

7. Ethernet Cable



The switch must be installed at all sites. The Ethernet cables of the B8200(3G) are connected from the ETHO of the CC board to the corresponding ports of the switch, which then connects to the optical MODEM through Ethernet cable. Generally, customized 1.8 m network cables are used as Ethernet cables. If the required length exceeds 1.8m, the cable should be made on site. The Ethernet cable is straight through, with the cable sequence (568B) in the RJ45 connectors at both ends being the same.



 

End A

Cable Color

End B

1

White orange

1

2

Orange

2

3

White green

3

4

Blue

4

5

White blue

5

6

Green

6

7

White brown

7

8

Brown

8

B8200 Cable Types 

8. GPS Feeder 

The GPS feeder is used to guide signals from GPS antenna into BBUB.  The appearance is shown in the figure below. The connector (male) at end B (BBUB side) is SMA coaxial cable; while the connector (female) at end A is N coaxial cable.

B8200 Cable Types 

9. Grounding Cable



Connect the grounding cables of both power cables and SA cables to the grounding terminal on the B8200(3G), and then connect the grounding terminal to the indoor equipment grounding bar through a 16mm2 yellow-green grounding cable.

B8200 Cable Types 

Grounding Requirements in W121

Power connecting point

Grounding point

Grounding point in power cabinet



Connect the grounding cables of both power cables and SA cables to the grounding terminal on the B8200(3G), and then connect the grounding terminal to the grounding point at the bottom left of the W121 power cabinet through a 16mm2 yellow-green grounding cable.



Such equipment as B8200(3G), switch, and microwave device must be all jointly connected to the grounding point in the power cabinet. Do not guide these equipment grounding cables to the outdoor grounding bar.

Content

Overview B8200 Installation RRU Installation

  

RRU Installation Modes RRU Cable Types RRU Cabling Modes

RRU Installation  

 



RRU supports two installation modes: outdoor and indoor. In the outdoor mode, the distance between RRU and antenna should be less than 5m if the RRU has only one antenna antenna, or 20m if the RRU has more than one antenna, or should meet the design rquirements. In the indoor mode, the distance between RRU and antenna should be less than 20m or shoule meet the design requirements. Install only one UMTS 2100M R8840 for each set of RRU in the first phase, and one 900M R8860 and one to four 1800M R8860s in the second phase. RRU Dimensions: Equipment

Dimensions (W×D×H)

Weight

Power Consumption

R8840

320 320mm×160mm×370mm ×160 ×370

16 5k 16.5kg

240W

R8860

320mm×172mm×500mm

22.5kg

390W

Note: The RRU must be placed vertically with its ports facing downwards downwards. Never place it horizontally.

Outdoor Installation of RRU       



When installing the RRU on an outdoor antenna feeder plane, there are several mounting modes as follows: Wall-mounting (preferred); Pole-mounting or L type-mounting; Flexible mounting according to the on-site conditions. Consider full configurations for each set of RRU: Six RRUs + three or six outdoor lightning protection boxes (one lightning protection box supports two RRUs) + two combiners + two 3dB bridges Where, the combiners and bridges are used at the shared stage of the existing network. After cutover, the combiners should be removed. Whether the bridges should be removed or not depends on the practical situations. Dimensions of Pole and Lightning Protection Box

Equipment

Dimensions (W×D×H)

Weight

Indoor Lightning Protection Box

450mm×99mm×400mm

8kg

Outdoor Lightning Protection Box

238mm×106mm×305mm

3kg

RRU Pole

600mm×600mm×2000mm

62kg

Outdoor Installation of RRU 

Outdoor Installation of RRU - Wall-Mounting Mode  Full configurations g of each RRU: six RRUs + three or six outdoor lightning protection boxes. Mount all these nine pieces of equipment on the wall individually. Only one R8840 is installed in the first phase of installation, so a dummy box is required to take a position for an RRU that will be installed in the second phase, at the end of which there will be six true and dummy RRUs.  Installation requirements: A space of 250mm high is required above the RRU for heat dissipation. There should be no object that affects normal outlets or connections in the 250mm i t ll ti space under installation d th the RRU RRU.  When mounting RRU and outdoor lightning protection box on the wall, do not use the included expansion bolts. Buy and use HILTI stainless t i l steel t l bolts b lt iinstead. t d

Outdoor Installation of RRU  

Outdoor Installation of RRU - Wall-Mounting Mode The figures below show the wall-mounted RRUs of the minimum installation dimensions. The layout may be adjusted according to the wall conditions at each h site. it

Outdoor Installation of RRU  

Outdoor Installation of RRU - Wall-Mounting Mode Installation Diagram:

Outdoor Installation of RRU   



 

Outdoor Installation of RRU - Pole-Mounting Mode Installation Dimensions: First p phase: The height g from the top p of the R8840 to the bottom of the support is 790mm. The height from the top of the outdoor lightning protection box to the bottom of the support is 870mm. In the outdoor pole-mounting mode, enough space should be reserved for operation and maintenance according to the following requirements: There must be a space of more than 1 m (from the center of the pole) at two or more sides. The distance between the pole center and the wall/equipment must be larger than 600mm if the pole is close to the wall or other equipment.

Outdoor Installation of RRU   



 

Outdoor Installation of RRU - Pole-Mounting Mode Installation of Concrete Pier under RRU Support: pp The construction workers should pour the concrete pier according to the practical on-site situations. Consider the bearing g capacity p y of the floor when p positioning g the concrete p pier based on the structure design drawings. Dimensions of concrete pier: 800mm×800mm×150mm The grade of the p g precast concrete p pier is C20, with a cement/mortar ratio of 1:3. Try to keep a flat upper surface and avoid destroying the waterproof p layer y of the roof when p pouring g the concret p pier. Make holes on the concret pier after it completely solidifies. M20 expansion bolts must be used to secure the pole.

Outdoor Installation of RRU 

Outdoor Installation of RRU - Pole-Mounting Mode  Scene Simulation of First Phase



Install the R8840 at the bottom layer during the first phase. It can only be positioned on the end face of the disc-shaped component (The concave surface of the component must face downwards.). Do not make it straddle two disc-shaped components. Install the outdoor lightning protection box on the R8840, with both f i th facing the same di direction, ti as shown h iin th the fifigures above. b M Mountt M8 b bolts lt iinto t th the positioning holes of the pole before installation. Use these bolts to position the discshaped component.

Outdoor Installation of RRU  

Outdoor Installation of RRU - Pole-Mounting Mode Scene Simulation of Second Phase

Install two 1800M R8860s, one 900M R8860, and one outdoor lightning protection box during the second phase. Position these three R8860s at the bottom layer, with the two 1800M R8860s being adjacent. Install the outdoor lightning protection box opposite to the one installed in the first phase.

Outdoor Installation of RRU  

Outdoor Installation of RRU - Pole-Mounting Mode Scene Simulation of Third Phase

Introduce the MIMO technology into the third phase. Install one 2100M R8840, one 900M R8860, and one outdoor lightning protection box. Install the outdoor lightning protection box at the top layer, facing the same direction as the one installed in the first phase. Install the two RRUs symmetrically at the same layer, as shown in the fi figures above. b The Th outdoor td lightning li ht i protection t ti box b can only l be b positioned iti d on the th end d face f off the th disc-shaped di h d component (The concave surface of the component must face downwards.). Do not make it straddle two discshaped components.

Outdoor Installation of RRU 

Outdoor Installation of RRU - L-Type Mounting Mode  Installation Example:



Installation requirements: There should be no object that affects normal outlets or connections in the 250mm installation space under the RRU.

Indoor Installation of RRU 

When installing the RRU indoors, configure six RRUs, one DC power distribution box (one DC power distribution box supports six RRUs), and one combiner/bridge g for each set.  Indoor or outdoor lightning protection boxes are not required. Each RRU set needs one DC power distribution box MCB (One DC power distribution box supports six RRUs. The rated current of the MCB switch should be higher than 16A). Use 25mm2 blue black power cables bl tto connectt th the DC power distribution di t ib ti cabinet bi t with ith each h DC power distribution box. Install a grounding bar besides each RRU set. If two RRU sets are close to each other (less than 3m), they can share a grounding bar. Connect the protective ground of the MCB to the RRU grounding bar by using 16mm2 yellow green grounding cables cables.  

Generally, there are two modes to install the RRU indoors: Wall mounting is preferred. If the wall is too thin (or made of sand or wood) to provide enough bearing capacity capacity, it is recommended to make a back-to-wall support on site. Refer to the wall-mounting BBUB above.  If wall mounting is impossible, it is also acceptable to use a floorstanding mounting support that can bear four RRUs RRUs. Mount the MCB on the nearest wall.

Indoor Installation of RRU 

Indoor Installation of RRU - Wall-Mounting Mode  The figures below show the wall-mounted RRUs of the minimum installation dimensions dimensions. The layout may be adjusted according to the wall conditions at each site.  A space of 250mm high is required above the RRU for heat dissipation. There should be no object that affects normal outlets or connections in the 250mm installation space under the RRU.

Indoor Installation of RRU 

Indoor Installation of RRU - Floorstanding Mounting Support (Portal Rack)  The dimensions of the floorstanding mounting support that bears four RRUs are 450mm×600mm×1600mm (W×D×H).  Note: if it is impossible p to mount expansion p bolts into the indoor floor, construction workers should take suitable actions to secure the installation.

R8840

R8860

Indoor Installation of RRU  

Indoor Installation of RRU - Floorstanding Mounting Support (Portal Rack) Installation Dimensions

R8840

R8860

Portal Rack Installation 









Portal rack positioning: The front edge of the base should be flush with that of the existing devices in the equipment room, room with a distance of 10cm away from adjacent devices on both sides. Install the base by using different modes that are suitable for the equipment i t room conditions. diti U Use tapping screws when installing it in a shelter or expansion screws in a normal equipment room. For the convenience of cabling, g, it is not recommended to mount the cover-like component at the top of the portal rack. It is required to drill holes at the lower (rear side) part of the portal rack pillar for the installation of grounding bar. Such holes should be 13cm away from the base, and the lower edge of the grounding bar should be 10cm from the base. See the figure on the right.

Mount the grounding bar on the inner side of the portal rack pillar.

The lower edge of the grounding bar should be 10 cm away from the base.

The holes should be 13 cm away from the base.

10 cm

The front edge of the base should be flush with that of the existing devices.

Installation of Universal R8840 Mounting Parts 

Universal wall-mounting parts are indispensable for R8840 installation in both wall-mounting and support-mounting modes.  Insulating bed plates and insulating rubber rings must be used in assembly for the installation of universal wall-mounting parts.  Installation Steps p  For portal rack-mounting mode: Bolt - insulating rubber ring universal wall-mounting part - insulating bed plate - portal rack - flat washer - spring p g washer - nut. For wall-mounting mode: Nut - flat washer - spring washer insulating rubber ring - universal wall-mounting part - insulating bed plate - expansion screw - wall.

R8840 Installation 



Install the R8840 on the portal rack. Keep an eye on the positions of the wall-mounting holes, which are the No. 1, 3, 11 and 13 holes from top to 11, bottom of the portal rack. Install Cell-A and Cell-B in the front of the portal rack, and Cell-C and Cell-D in the back.

RRU Cable Types     

DC power cable Outdoor optical fiber ½" jumper RRU alarm cable Grounding cable

R8840 Interfaces

RRU Cable Types  



1. DC Power Cable Currently ZTE delivers many models of DC power Currently, cabinets (such as H900, H151, T601, and W121) that are configured with two types of switches: 63A and d 32A 32A. It is i recommended d d to t connectt each h RRU set to a 63A switch and connect the B8200 (3G) to a 32A switch during g the first-phase p installation. If an old DC power supply equipment is used, it is recommended to connect each RRU set to a 63A switch and connect the B8200(3G) to a 32A switch switch, If the old switch does not meet specifications, replace it with a qualified one.

RRU Cable Types       







Outdoor Cabling Requirements The selection of outdoor cables between indoor lightning protection box (one supports three RRUs) and outdoor lightning protection box (one supports two RRUs) should follow the principles below. If the cable length is less than 50m 50m, use 6mm2 dedicated two-core two core cables cables. If the cable length is between 50m and 145m, use 16mm2 dedicated two-core cables. If the cable length is between 50m and 80m, it is also acceptable to use 10mm2 dedicated two-core cables. If the cable length is between 145m and 290m, use 16mm2 dedicated two-core cables, but in this case, one outdoor lightning protection box only powers one RRU separately. Configure outdoor lightning protection boxes and outdoor cables as follows after completing the installation of each RRU set. If the outdoor cable length is less than 145m, the 2100M RRU and the 900M RRU should share one outdoor lightning protection box, and two to four 1800M RRUs should share one or two outdoor lightning protection box. In this case, each RRU set requires three outdoor cables. If the site is designed to accomodate UMTS equipment only, each RRU set requires only one outdoor td cable. bl If the outdoor cable length is between 145m and 290m, each outdoor lightning protection box can only support one RRU. In this case, each RRU set requires six outdoor cables. If the site is designed to accomodate UMTS equipment only, each RRU set requires only two outdoor cables. If the cable length g between the indoor lightning g gp protection box and the outdoor lightning g g protection box is more than 290m, it is recommended to position the RRU as close as possible to the B8200 during project survey, and make sure the cabling route is less than 290m. If it is impossible to meet such requirements, give up the site and find a new one. It is required to finish laying outdoor cables once and for all in the first-phase installation. Lay three or six outdoor cables for each RRU set. A surplus cable length of 3-5m should be reserved at the indoor B8200 side for the installation of the indoor lightning protection box during the second phase. The pre-laid cables at the RRU side should also provide a surplus length, and waterproof treatment should be made.

RRU Cable Types  



Cabling Requirements in Outdoor Lightning Protection Box The inlet/outlet cables of the outdoor lightning protection box must be sealed by passing through the sealing ring of the box for good leakproofness. If the 16 mm2 outdoor cables cannot pass through the sealing ring ring, remove itit, and then lay the cables. Make sure the cable sequence is correct during the installation of the outdoor lightning protection box, as shown in the figures below.Note: The power cable that connects with the 2100M RRU must pass through the middle cabling hole. The end of the unused cabling hole must be sealed by winding two rounds of PVC insulating tape on it.

Correct Installation

Wrong Installation

RRU Cable Types        

 





2. Outdoor Optical Fiber Configure optical fibers as follows after completing the installation of each RRU set. UMTS 2100M: 1 piece UMTS/GSM 900M: 900M 1 piece i GSM 1800M: 1 or 2 pieces Standby optical fiber: 1 piece Generally, lay five optical fibers for each RRU set. It is required to finish laying outdoor optical fibers once and for all in the first-phase first phase installation. Lay five outdoor optical fibers for each RRU set. Coil up the surplus length of optical fibers and place them at the RRU side. A surplus optical fiber length of 3-5m should be reserved at the B8200 side for the installation of the B8200 during the second phase. Waterproof treatment should be made to the pre-laid optical fibers. If the site is designed to accomodate UMTS equipment only, each RRU set requires only three outdoor optical fibers. fibers Each optical fiber must be tested by using optical multimeter before and after laying. Fill the detailed test results accurately into the Outdoor Fiber Test Record. Use optical multimeter to test the loop-back loss of the optical fibers. The optical fibers are in good condition if the loop-back loss is less than 1dB; otherwise, find out the reason or lay the optical fibers again. Do not lay the outdoor optical fibers at the places where they will possibly be trampled frequently. Otherwise, mount rigid PVC troughs or trough covers to protect the optical fibers. Both ends of the connectors of any pre-laid or unused outdoor optical fiber must be q pp with p protective caps. p Never touch any y optical p fiber connector with bare hand. equipped Waterproof treatment must be made to the outdoor connectors.

RRU Cable Types  

3. ½" Jumper The ½" ½ jumper (left) and the 7/8" 7/8 jumper (right) are shown below.

RRU Cable Types 

4. RRU Alarm Cable

RRU Cable Types   

Alarm Cable Connections between RRU and Outdoor Lightning Protection Box Connect the alarm cable of the RRU to the outdoor lightning protection box by using the white brown/brown wires at the dry contact 1, as shown in the figure below. Note: Strip off the alarm cable sheath until the wires show their colors (white brown/brown).

RRU Cable Types  

 

5. Grounding Requirements of Outdoor Cables Both ends of each outdoor cable are grounded through the shielding layer of the cable fixed by a metal fastener in the indoor/outdoor lightning protection box. Protective grounding is made to the lightning protection box through grounding cables cables, and the mental fastener connects with the grounding of the lightning protection box, so no grounding cable is required at both ends of the outdoor cable. The 16mm2 cable cannot pass through the cabling hole on the outdoor lightning protection box until the cable sheath is stripped off. The cable clip in the outdoor lightning protection box can be used to clamp 16mm2 shielding cables. If there is no lightning strip on the roof, it is acceptable to ground the outdoor cable at both sides. No grounding is required in the middle middle, as shown in the figure below below. If there is a lightning strip on the roof, ground the outdoor cable at both sides when the cable length is less than 30m. If the outdoor cable length is more than 30m on the roof, ground it once per 20m.