HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

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Page 2

LTE Network Topology

Chapter2: Installation Key Point and Mistake

CONTENTS

Chapter1: Site Solution


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Page 3 Page 3

RRU Power Cable Solution

DCDU-11B RRU3938

< 100m

0~100m

Notes:

If the power cable length(between RRU and DCDU) >100m,

please contact Huawei Site Engineer for special solution


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Page 4

BBU and DCDU install on the Transmission Cabinet

1) FDD LTE BBU should install under the TDD LTE BBU which already existed on the site.

2) Power cable of RRU from Sector A/B/C connected Load 3/4/5; Power cable of BBU

connected to Load 7.

3) CPRI Fiber of RRU from Sector A/B/C connected to CPRI 0/1/2 on LBBP board.

4) Transmission Fiber connected to SFP 0; Transmission Ethernet Cable connected to GE/FE 0

5) CPRI Fiber should be tied with Hook & Loop Mechanical Fastener. 6) 1 U space should be reserved between 2 BBUs.

5


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Page 5

RRU installed on Tower

Sector A Sector B

RRU and antenna can be installed as

back to back.

RRU can be installed on a pole near the

pole for antenna.

RRU should be grounded on tower.

Sector C


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Page 6

Cable connection for RRU

ANT0 ANT1

-45 +45

1) ANT0 of RRU should connected to port +45 of the Antenna. .

2) ANT1 of RRU should connected to port -45 of the Antenna.


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Page 7

1

2

1) CPRI fiber is connected to CPRI 0;

2) The metal shield of RRU power cable should

be cut and grounding on clip inside RRU

cabling cavity;

3) The water plugs should be filled in the vacant

troughs of the RRU cabling cavity.

Cable connection inside RRU cabling cavity.

3


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Page 8

Antennas Labeling

Sector A Sector B Sector C

ANT_1A

ANT_0A

ANT_1B

ANT_0B

ANT_1C

ANT_0C

1) Label of ANT_0A, ANT_0B, ANT_0C is connected to +45

2) Label of ANT_1A, ANT_1B, ANT_1C is connected to -45


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Page 9

RRU Feeder Label and Color Feeder Mark Rules

RRU Label Rules Sector: A BC RRU Path: 01 Color Feeder Mark: A(Red)B(yellow)C(Blue); all with two while ring code to separate with TDD

RRU 0

1 0

AN

T_1A

AN

T_0A

Color Feeder Mark

Feeder Label


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Page 10

Antenna Feeder Label and mark rules

RRU Label Rules Sector: A BC Path: 0123 Color Ring: A(Red)B(yellow)C(Blue); all with two while ring code to separate with TDD

X X X

X X X

X X X Antenna A

A

RCU +45 -45 -45 +45 RCU

AN

T_

1A

AN

T_

0A

X X X

X X X

X X X Antenna B

B

RCU +45 -45 -45 +45 RCU

AN

T_

1B

AN

T_

0B

X X X

X X X

X X X Antenna C

C

RCU +45 -45 -45 +45 RCU

AN

T_

1C

AN

T_

0C

Make mark with color ring

Feeder Label

Make mark use alphabet


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Page 11

LTE Network Topology

Chapter2: Installation Key Point and Mistake

CONTENTS

Chapter1: Site Solution


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Page 12

Safety belt and cap is extremely needed.

Wrong Right

Notes Safety cap is needed for the working on the site. And the safety belt is needed for working on the tower or poles.


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Page 13

Connect the power cable to the right port Wrong Right

Notes 1. Power cable of RRU for sector A/B/C should be connected to LOAD3/4/5, label with LTE PWR

RRU0/1/2 2. BBU should be connected to LOAD7, label with PWR BBU


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Page 14

Remove the shield of the power cable near connector

Wrong Right

Notes The black shield of the power cable near the power connector of DCDU should be cut and tied up.


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Page 15

The CPRI fiber should be tied. Wrong Right

Notes The CPRI fiber should be tied with Hook & Loop Mechanical Fastener. Dont use cable tie.


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Page 16

Put the redundant fiber on the Transmission Rack bottom

Wrong Right

Notes The redundant fiber should be circled and put on the bottom of the transmission rack. Dont put it outside the tower or on the cable tray.


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Page 17

The heat-shrink tube is used and shrink well. Wrong Right

Notes The power cable should use the heat-shrink tube. And it should be done well.


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Page 18

Ground the DCDU on the Transmission Cabin Wrong Right

Notes Ground the DCDU on the Transmission cabin. ( Use 6mm grounding cable. )


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Page 19

Installed the bracket assembly on the right direction

Wrong Right

Notes: Follow the label on the bracket assembly carefully. And make sure the bracket assembly of the RRU is installed on the right direction.


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Page 20

The metal shield of RRU power cable is wrongly cut.

Wrong Right

Notes The metal shield of RRU power cable should be cut and grounding on clip inside RRU cabling cavity. The metal shield can not be cut too long and it go outside the cabling cavity.


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Page 21

The waterproof plugs are filled in the vacant troughs

Wrong Right

Notes The water plugs should be filled in the vacant troughs of the RRU cabling cavity.


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Page 22

Labeling the Jumpers of the RRU with the correct Label

Wrong Right

Notes Use Label ANT_0A and ANT_1A for Sector A; Use Label ANT_0B and ANT_1B for Sector B; Use Label ANT_0C and ANT_1C for Sector C.


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Page 23

Remove the oil paint of the tower for grounding point

Wrong Right

Notes Oil paint of tower is not removed on earth grounding point. electric ability surge protection will be decreased.


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Page 24

The power cable are grounded beside the Roxtec

Wrong Right

Notes The power cables of the RRU should be grounded by the grounding clip on the grounding bat before routed into the Roxtec.


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Page 25

BBU and DCDU should be fixed with screws. Wrong Right

Notes BBU and DCDU should be fixed with screws. Cable ties is forbidden to use for fixing equipment.


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Page 26

Keep the environment of the site neat and clean Wrong Right

Notes Keep the environment of the site neat and clean. Dont leave any boxes, cables, bottles inside and outside the shelter. Take all the garbage away the site.

huawei lte enodeb site solution & installation key point

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