DBS3900 NODEB Overview

HUAWEI TECHNOLOGIES CO., LTD. All rights reserved

www.huawei.com

Internal

DBS3900/3800 NODEB

Hardware Overview

HUAWEI TECHNOLOGIES CO., LTD. All rights reserved Page 2

DBS3900 Abbreviations

WMPT WCDMA Main Processing and Transmission Unit

WBBPbD 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)


DBS3900 Overview

DBS3900 system consists of:

BBU3900/BBU3806 – Baseband Unit

RRU3804 /RRU38008 /RRU3801– Remote Radio Unit

Antenna and feeder system

RNC

-48V DC

power Power cable

Power cable

Trunk cable via transmission Fiber or CPRI high-speed

signal cable

RRU

3804 /3808/3801c

BBU3900

Grounding cable

-48V/ 24V DC power Grounding cable

Antenna

RF jumper

Feeder

RF jumper


BBU3900/3800 Module Introduction

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

UPEU

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

Full configuration

Typical configuration BBU3900 Module

Baseband unit

BBU3806 Module


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

Front Panel of the BBU3806

http://localhost:7890/pages/31183622/09 (2010-07-09)/31183622/09 (2010-07-09)/resources/nodeb/b-bbu3806-user-guide/bb-1-35.html?ft=0&fe=10&hib=4.2.1.2&id=31183622_09%20(2010-07-09)_10085























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.

EBBC (FOR BBU3806 ONLY)



LED Color Status Description

RUN Green ON The BBU3806 is checking the version, or it is

faulty.

OFF 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.

ALM Red 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.

ACT Green 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.

LIU0 to LIU7 Yellow ON A local E1/T1 alarm is generated.

ON for 0.25s and OFF for 0.25s A remote E1/T1 alarm is generated.

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

CPRI 0 to

CPRI 2

Yellow ON The CPRI link is faulty.

OFF The CPRI link and the hardware of the RRU run

properly.

ON for 1s and OFF for 1s A VSWR alarm is generated.

ON for 0.125s and OFF for 0.125s The hardware of the RRU is faulty.

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.

LEDs on the BBU3806

http://localhost:7890/pages/31183622/09 (2010-07-09)/31183622/09 (2010-07-09)/resources/nodeb/b-bbu3806-user-guide/bb-1-35.html



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.

Power Cable of the BBU3806

Pin on the 7W2 Female Connector

Color Description

A1 Blue -48 V The two wires are used to transmit -48 V power signals.

A2 Black GND

http://localhost:7890/pages/31183622/09 (2010-07-09)/31183622/09 (2010-07-09)/resources/nodeb/b-bbu3806-user-guide/bb-1-42.html?ft=0&fe=10&hib=4.2.3.2.2&id=31183622_09%20(2010-07-09)_10102


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

BBU3900 Module Introduction

http://localhost:7890/pages/31184104_04/08/31184104_04/08/resources/bbu/cbb/bbu-hardware-description/bb-1-6.html?ft=0&fe=10&hib=3.3.3.1&id=31184104_04_08_10008




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.

(1) 3V3 power connector (2) OT terminal

Figure 2 Appearance of power cable(DC OMB)

BBU Power cable (DBS3900)


BBU3900 Module Introduction

Slot

16

Slot 18

Slot 19

SLOT0

SLOT1

SLOT2

SLOT3

SLOT4

SLOT5

SLOT6

SLOT7

Active and standby slot definition

only for UTRP board

B

F

A

PEU/

EIU

PEU/

EIU

WBBP

WBBP

WBBP

WBBP

UTRP

UTRP

WMPT

WMPT

Slot boards definition


BBU Module --- WMPT Board

Board number：

maximum is 2 for one BBU

mandatory board

working in active and standby mode

4E1:DB26

IP transmission on

Electrical Port :RJ45

IP transmission Optical signals: SFP

GPS antenna: SMA

Commissioning:RJ45

Loading Testing:USB

LEDs

Main Functions：

Providing OM functions

Controlling other boards in the system and

providing the reference clock

Providing USB ports for automatic NodeB

upgraded

Providing transmission port for Iub interface

Providing OM channels



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.

ALM Red ON The board is reporting alarms and is faulty.

OFF The board is running properly.

Blinking The external ports of the board are faulty.

ACT Green ON The board is in active mode.

OFF The board is in standby mode.



LED Color Status Description

LEDs beside the

FE1 and FE0 optical

port

Green ON The connections are functional.

OFF The connections are faulty.

Yellow Blinking There is ongoing data transmission.

OFF There is no data transmission.

LEDs beside the

ETH port

Green ON The connections are functional.

OFF The connections are faulty.

Yellow Blinking There is ongoing data transmission.

OFF There is no data transmission.



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 The RRING is for connected

to the protection ground. 2 ON

3 ON

4 ON


(1) DB26 male connector

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

E1/T1 Cable (Clock Cable)





(1) RJ-45 connector

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

FE/GE Cable (Transmission)



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.

BBU Module --- WBBP Board

http://localhost:7890/pages/31184104_04/08/31184104_04/08/resources/bbu/cbb/bbu-hardware-description/bb-1-321.html?ft=99&fe=1&id=31184104_04_08_10012&keyword=wbbpd&noteId=




(1) DLC connector (2) Branch cable (3) Label on the branch 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

CPRI Optical Cable

http://localhost:7890/pages/31184104_04/08/31184104_04/08/resources/bbu/cbb/bbu-hardware-description/bb-1-329.html?ft=0&fe=10&hib=3.3.4.10&id=bb-1-329



LED of running status of board :


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 The board is running properly.

0.125s ON/OFF Software is being loaded to the board.

ACT Green ON The board is running properly.

OFF The board is not in use.

ALM Red OFF The board is running properly.

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.

CPRI0

CPRI1

CPRI2

Red

Green

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.



There are 2 kinds of Baseband card WBBPa ,WBBPb4 and WBBPd.

Table 1 Specifications of the WBBP

Board 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



STATE Green 0.125s ON,

0.125s OFF

The module is not registered, and no

alarm is reported.

1s ON, 1s OFF The board is running properly.

Red ON The module is reporting alarms.

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

BBU Module --- UFAN Board


Panel of the UPEA

(USE FOR 3G PHASE 4) Panel of the UPEB

BBU Module --- UPEU Board

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

-48V to +12V +24V to +12V


LED: The UPEU has one LED, indicating the running status of the board.


RUN Green ON The board is running properly.

OFF The board has no power input, or

the board is faulty.

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

BBU Module --- UPEU Board


The DDF for twisted pair cables can connect to eight twisted pair cables. Figure 2 DDF for twisted pair cables

120 ohm DDF

www.huawei.com

Thank You

Date post:	24-Apr-2015
Category:	Documents
Upload:	ryan-de-leon
View:	1,659 times
Download:	43 times

DBS3900 NODEB Overview

Documents