Dbs3900 Nodeb Overview

Internal

DBS3900/3800 NODEB Hardware Overview

www.huawei.com

HUAWEI TECHNOLOGIES CO., LTD.

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DBS3900 Abbreviations WMPT WBBPbD

WCDMA Main Processing and Transmission Unit WCDMA Baseband Process unit Type D

UBFA

Universal BBU Fan Unit Type A (2U)

UELP

Universal E1/T1 Lighting Protection unit

UFLP

Universal FE/GE Lighting Protection unit

UPEU

Universal Power and Environment Interface Unit

CPRI

Common Protocol Radio Interface

APM

Advanced Power Module (FOR OUTDOOR)


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DBS3900 Overview  DBS3900 system consists of:

 BBU3900/BBU3806 – Baseband Unit  RRU3804 /RRU38008 /RRU3801– Remote Radio Unit  Antenna and feeder system Antenna

RRU 3804 /3808/3801c

RF jumper

Feeder

-48V DC power

Grounding cable RF jumper

Power cable BBU3900

-48V/ 24V DC power

Grounding cable Power cable

Trunk cable via transmission

Fiber or CPRI high-speed signal cable

RNC


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BBU3900/3800 Module Introduction Baseband unit

BBU3900 Module

 Full configuration

 Typical configuration

BBU3806 Module

 Mandatory boards and modules：WMPT, WBBP, UBFA, and

UPEU 

The optional boards are the UELP, UFLP, UTRP, and UEIU.


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Front Panel of the BBU3806 All the ports, LEDs, and DIP switch are on the front panel of the BBU3806.

Figure 1 shows the front panel of the BBU3806.

Figure 1 Front panel of the BBU3806


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EBBC (FOR BBU3806 ONLY) The Enhanced Base Band Card (EBBC) is a baseband extension plugboard for the BBU3806. It supports HSUPA phase II functions. Figure 1 shows the EBBC and its panel.


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LEDs on the BBU3806 The LEDs are on the front panel of the BBU3806 and indicate the running status of the BBU3806. For the positions of the LEDs on the BBU3806, see Front Panel of the BBU3806. Table 1 describes the LEDs and the status of the LEDs.

LED

Color

RUN

Green

ALM

ACT

LIU0 to LIU7

CPRI 0 to CPRI 2

Red

Green

Yellow

Yellow

Status ON

Description

OFF

The BBU3806 is checking the version, or it is faulty. The BBU3806 has no power input, or it is faulty.

ON for 1s and OFF for 1s

The BBU3806 runs properly.

ON for 0.25s and OFF for 0.25s

Software is being loaded to the BBU3806, or the BBU3806 is not configured.

ON

The hardware of the BBU3806 is faulty.

OFF

The hardware of the BBU3806 runs properly.

Blinking

An external port on the BBU3806 is faulty.

ON

The BBU3806 is running or in the active state.

OFF

The board is not in use or the working mode of the BBU3806 is extension.

ON

A local E1/T1 alarm is generated.


A remote E1/T1 alarm is generated.

OFF

This link is not used, or the alarm is cleared.

ON

The CPRI link is faulty.

OFF ON for 1s and OFF for 1s

The CPRI link and the hardware of the RRU run properly. A VSWR alarm is generated.


The hardware of the RRU is faulty.


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Power Cable of the BBU3806 The -48 V DC power cable of the BBU3806 is used to supply -48 V DC power to the BBU3806.

Appearance The -48 V DC cable has a 7W2 female connector at one end and two bare power wires at the other end, as shown in Figure 1. OT terminals or cord end terminals must be added to the two wires on site.

Pin on the 7W2 Female Connector A1

Color Blue

-48 V

A2

Black

GND


Description The two wires are used to transmit -48 V power signals.

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BBU3900 Module Introduction Exterior of the BBU3900 The BBU3900, which has a case structure, is 19 inches wide and 2 U high. The dimensions (W x D x H) of the BBU3900 are 442 mm x 310 mm x 86 mm.

Figure 1 shows the BBU3900. Figure 1 BBU3900


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BBU Power cable (DBS3900) The BBU power cable in the OMB is used to supply -48 V DC power to the BBU and HEUA. The DC OMB and AC OMB require different power cables between the BBU and the HEUA.

Figure 2 Appearance of power cable(DC OMB)

(1) 3V3 power connector


(2) OT terminal

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BBU3900 Module Introduction

Slot

SLOT0

SLOT4

16

SLOT1

SLOT5

SLOT2

SLOT6

SLOT3

SLOT7

Slot 18

Slot 19

B

WBBP

UTRP

PEU/

F

WBBP

UTRP

EIU

A

WBBP

WMPT

PEU/

WBBP

WMPT

EIU

Active and standby slot definition only for UTRP board


Slot boards definition

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BBU Module --- WMPT Board IP transmission on Electrical Port :RJ45

Loading

Testing:USB

GPS antenna: SMA

LEDs Commissioning:RJ45

 Board number：

IP transmission Optical signals: SFP

4E1:DB26

Main Functions：

 maximum is 2 for one BBU

Providing OM functions

 mandatory board

Controlling other boards in the system and

 working in active and standby mode

providing the reference clock Providing USB ports for automatic NodeB upgraded Providing transmission port for Iub interface

Providing OM channels HUAWEI TECHNOLOGIES CO., LTD.

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BBU Module --- WMPT Board  LEDs of running status of WMPT:

Label

Color

Status

Description

RUN

Green

ON

The board has power input, yet the board is faulty.

OFF

The board has no power input.

1s ON, 1s OFF

The board is running as configured.

0.125s ON, 0.125s OFF

The software is being loaded to the board, or the board is not in use.

ON

The board is reporting alarms and is faulty.

OFF

The board is running properly.

Blinking

The external ports of the board are faulty.

ON

The board is in active mode.

OFF

The board is in standby mode.

ALM

ACT

Red

Green


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BBU Module --- WMPT Board

LED

Color

Status

Description

LEDs beside the FE1 and FE0 optical port

Green

ON

The connections are functional.

OFF

The connections are faulty.

Blinking

There is ongoing data transmission.

OFF

There is no data transmission.

ON

The connections are functional.

OFF

The connections are faulty.

Blinking

There is ongoing data transmission.

OFF

There is no data transmission.

Yellow

LEDs beside the ETH port

Green

Yellow


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BBU Module --- WMPT Board  Two DIP Switches :

 SW1 for setting the E1/T1 working mode  SW2 for setting the protection ground for the E1. Settings of SW1 Bit

T1 Mode

120-ohm E1 Balanced Mode

75-ohm E1 Unbalanced Mode

1

ON

OFF

ON

2

ON

OFF

ON

3

OFF

ON

ON

4

OFF

ON

ON

Settings of SW2


Bit

75-ohm E1 Unbalanced Mode

Description

1

ON

2

ON

The RRING is for connected to the protection ground.

3

ON

4

ON

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E1/T1 Cable (Clock Cable) The E1/T1 cable connects the BBU to the external transmission device and transmits baseband signals. Exterior The E1/T1 cables are classified into two types: 75-ohm E1 coaxial cable and 120-ohm E1 twisted pair cable. One end of the E1/T1 cable is a DB26 male connector. The connector at the other end of the cable should be made on site according to site requirements. Figure 1 E1/T1 cable

(1) DB26 male connector


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FE/GE Cable (Transmission) The FE/GE cable connects the BBU to the transmission device through routing devices and transmits baseband signals. NOTE: The maximum length of the FE/GE cable for remote connection is 100 m. Exterior The FE/GE cable is a shielded straight-through cable. It has an RJ-45 connector at each end Figure 1 FE/GE cable

(1) RJ-45 connector


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BBU Module --- WBBP Board The WBBP has three types of panels, as shown in Figure 1, Figure 2 and Figure 3.

Figure 1 Panel of the WBBPa

Figure 2 Panel of the WBBPb

Figure 3 Panel of the WBBPd

Board number： mandatory, maximum is 6 Functions The WBBP has the following functions: •Provides the CPRI interface for communication between the BBU and the RRU or RFU, and supports the CPRI interface in 1+1 backup mode. •Processes uplink and downlink baseband signals. •The WBBPd supports interference cancellation (IC) within the board. •When installed in slot 2 or slot 3, the WBBPd supports the IC function of uplink data.


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CPRI Optical Cable The CPRI optical cable transmits CPRI signals between the BBU and the RRU or between RRUs. Exterior The CPRI optical cable is categorized into the multi-mode optical cable and single-mode optical cable. When the distance between the BBU and the RRU is shorter than 100 m, a multi-mode optical cable is required. When the distance between the BBU and the RRU is longer than 100 m, a single-mode optical cable is required. Figure 1 shows the multi-mode optical cable.

Figure 1 Multi-mode optical cable

(1) DLC connector

(2) Branch cable


(3) Label on the branch cable

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BBU Module --- WBBP Board  LED of running status of board : Label

Color

Status

Description

RUN

Green

ON

The board has power input, yet the board is faulty.

OFF

The board has no power input or is faulty.

1s ON, 1s OFF


0.125s ON/OFF

Software is being loaded to the board.

ON


OFF

The board is not in use.

OFF


ON

The board has alarms on hardware and it should be replaced with a new one.

Blinking

The external ports of the board are faulty and should be handled.

OFF

normal

ON

The CPRI links over the optical cable are faulty.

Blinking at 2 Hz

The RRU on the CPRI link is faulty in hardware.

Blinking at 0.5 Hz

The RRU on the CPRI link is faulty in the antenna system connection.

ACT

ALM

CPRI0 CPRI1 CPRI2

Green

Red

Red Green


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BBU Module --- WBBP Board  There are 2 kinds of Baseband card WBBPa ,WBBPb4 and WBBPd.

Board

Table 1 Specifications of the WBBP Number of Cells UL CE Number DL CE Number

WBBPa

3

128

256

WBBPb1

3

64

64

WBBPb2

3

128

128

WBBPb3

6

256

256

WBBPb4

6

384

384

WBBPd1

6

192

192

WBBPd2

6

384

384

WBBPd3

6

256

256

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BBU Module --- UFAN Board

 Board number： mandatory, maximum is 1  Main Functions：

 Controlling the fan speed

 Reporting the fan status to the WMPT  Detecting the temperature of the fan board Label

Color

Status

Description

STATE

Green

0.125s ON,

The module is not registered, and no

0.125s OFF

alarm is reported.

1s ON, 1s OFF


ON

The module is reporting alarms.

Red


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BBU Module --- UPEU Board 

Panel of the UPEA

 Panel of the UPEB

(USE FOR 3G PHASE 4)

+24V to +12V

-48V to +12V



Board number： mandatory, maximum is 2, 1+1 backup



Main Functions：  Converting -48 V or +24 V DC power input to +12 V DC power that is supported by boards


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BBU Module --- UPEU Board  LED: The UPEU has one LED, indicating the running status of the board.

Label

Color

Status

Description

RUN

Green

ON


OFF

The board has no power input, or the board is faulty.

 Socket and Port: The UPEU has one socket and four ports.


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120 ohm DDF The DDF for twisted pair cables can connect to eight twisted pair cables.

Figure 2 DDF for twisted pair cables


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Thank You www.huawei.com

Dbs3900 Nodeb Overview

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