[Base Station Encyclopedia] UPEU Boards for BBUs (BBU Boards, Best Fri ...

Rosakitty  Silver  (1)
6 years 1 month ago  View: 18808  Reply: 8

 

 



What is a UPEU?

The universal power and environment interface unit (UPEU) is a power module used for converting -48 V input power into +12 V DC power and then distributing the power to other boards in a BBU.

A UPEU board can be used in any radio system. A BBU3900 or BBU3910 must be configured with a UPEU board. At least one UPEU board and a maximum of two UPEU boards can be configured in a BBU3900 or BBU3910. In addition, a UPEU board must be configured in slot 18 or 19.

 

For details, see section "UPEU" in BBU Hardware Description.

What are the functions and working principle of a UPEU board?

A UPEU board converts -48 V DC input power into +12 V DC power and provides two ports with each transmitting one channel of RS485 signals and another two with each transmitting four channels of Boolean signals.

The working principle of a UPEU board is shown in the following figure.

 

For details, see section "UPEU" in BBU Hardware Description.

 


 

What are the types of UPEU boards?

From SRAN9.0 onwards, UPEU boards are classified into the following types:

l  UPEUa

l  UPEUc

l  UPEUd

Different UPEU boards have different appearances.

l  A UPEUc and a UPEUd have labels indicating their board types on the upper right corners of them, whereas a UPEUa does not have such a label.

l  The power port on a UPEUc or UPEUd is a 3V3 port, whereas that on a UPEUa is a 7W2 port.

l  The silkscreen above the power port on a UPEUc or UPEUd describes both voltage and current values, whereas that on a UPEUa describes only a voltage value.

 

For details, see section "UPEU" in BBU Hardware Description.


 

What are the meanings of "8A" and "15A"on the panels of a UPEUc and a UPEUd?

The silkscreen "8A" on a UPEUc panel indicates the rated current of a UPEUc, and the silkscreen "15A" on a UPEUd panel indicates the rated current of a UPEUd.

For details, see section "UPEU" in BBU Hardware Description.


 

What is the output power of a UPEU board? Is 1+1 backup supported when two UPEU boards are configured?

Different types of UPEU boards have different output power. The following table lists the output power of UPEU boards.

Board

Output Power

Backup Mode

UPEUa

The output power of a UPEUa board is 300 W.

1+1 backup

UPEUc

The output power of a UPEUc board is 360 W, and the output power of two UPEUc boards is 650 W.

In 1+1 backup mode, the output power of two UPEUc boards is 360 W.

UPEUd

The output power of a UPEUd board is 650 W.

1+1 backup

For details, see section "UPEU" in BBU Hardware Description.


 

Why does the preceding table not list the output power when different types of UPEU boards are configured in a BBU, such as UPEUa+UPEUc and UPEUc+UPEUd?

Note that a BBU cannot house two UPEU boards of different types, that is, such configurations as UPEUc+UPEUa and UPEUc+UPEUd are not supported. Currently, the maximum output power of UPEU boards is provided by the UPEUc+UPEUc configuration.

For details, see section "UPEU" in BBU Hardware Description.


 

What are the functions of Ethernet ports on a UPEU panel?

A UPEU board provides four monitoring/alarm ports to transmit two channels of RS485 signals and eight channels of Boolean signals.

The following table lists the mapping between ports and signals to be monitored.

Silkscreen

Connector

Description

EXT-ALM0

RJ45 connector

Port for Boolean signal inputs 0 to 3

EXT-ALM1

RJ45 connector

Port for Boolean signal inputs 4 to 7

MON0

RJ45 connector

Port for RS485 signal input 0

MON1

RJ45 connector

Port for RS485 signal input 1

For details, see section "UPEU" in BBU Hardware Description.


 

What are the relationships between line orders of the alarm cable and Boolean signals?

An alarm cable is an Ethernet cable with an RJ45 connector at each end. The following table lists the mapping between the line orders of the EXT-ALM0 and EXT-ALM1 ports and the Boolean signals.

 

Alarm Port on the BBU

X1 End

X2 End

Color

Wire Type

Description

EXT-ALM1

X1.1

X2.1

White and orange

Twisted pair

Boolean input 4+

X1.2

X2.2

Orange

Boolean input 4- (GND)

X1.3

X2.3

White and green

Twisted pair

Boolean input 5+

X1.6

X2.6

Green

Boolean input 5- (GND)

X1.5

X2.5

White and blue

Twisted pair

Boolean input 6+

X1.4

X2.4

Blue

Boolean input 6- (GND)

X1.7

X2.7

White and brown

Twisted pair

Boolean input 7+

X1.8

X2.8

Brown

Boolean input 7- (GND)

EXT-ALM0

X1.1

X2.1

White and orange

Twisted pair

Boolean input 0+

X1.2

X2.2

Orange

Boolean input 0- (GND)

X1.3

X2.3

White and green

Twisted pair

Boolean input 1+

X1.6

X2.6

Green

Boolean input 1- (GND)

X1.5

X2.5

White and blue

Twisted pair

Boolean input 2+

X1.4

X2.4

Blue

Boolean input 2- (GND)

X1.7

X2.7

White and brown

Twisted pair

Boolean input 3+

X1.8

X2.8

Brown

Boolean input 3- (GND)

For details, see section "UPEU" in BBU Hardware Description and section "BBU Alarm Cable" in 3900 Series Base Station Cables.


 

If the power required by a BBU exceeds the power supported by the configured UPEU board after baseband processing boards are added to the BBU, how should we adjust the configurations of UPEU boards?

l  If one UPEUa is configured for the original BBU, replace the UPEUa with two UPEUc boards to meet the current power requirement.

l  If one UPEUc is configured for the original BBU, add a UPEUc to achieve the maximum configuration.

l  If one UPEUc and one UEIU are configured for the original BBU, replace the UEIU with a UPEUc.

l  If two UPEUa boards, or one UPEUa and one UEIU are configured for the original BBU, replace the boards with two UPEUc boards.

For details, see section "Adding a UPEU" in the corresponding site maintenance guide.


Do you want to learn more about UPEU boards?

Then, show your questions!


 

For more information, you can visit  Wireless Network Information Center

Product Solution Version Product Version Link
BBU Hardware Description SRAN9.0 MBTS V100R009C00 BBU Hardware Description
BBU Hardware Description SRAN10.1 MBTS V100R010C10 BBU Hardware Description
BBU Hardware Description SRAN11.1 MBTS V100R011C10 BBU Hardware Description

This post was last edited by Cilla.luodan at 2016-03-30 17:19.
Comment
user_3282043 user_3282043  1 year 10 months ago

Hi i am reza from **** , How i can send external alarm without any alarmbox just with open or close axis  

Ghorazz2.2  Senior 
6 years 1 month ago
Thnx for sharing.. it is very informative
sohaib_alhilf  Gold 
6 years 1 month ago

thanx

i download this doc mentioned 


best regard


m84026400  Junior 
6 years 28 days ago
very nice :)
sohaib_alhilf  Gold 
5 years 4 months ago

THANKS A LOT 

SIMPLE WITH GOOD INFORMATION

BEST

 REGARD

faz  Platinum 
5 years 3 months ago
Good way to share info.
user_2966217  Junior 
3 years 8 months ago
Dear:
I have upeu for BBU3900 May be faulty.
It's work normally if the voltage more than 51.6v
When the voltage goes down the upeu not working more ,so what is the problem.
Thanks
Abdul
+967777728521
user_2837311  Diamond 
2 years 9 months ago
useful document, thanks