Download - Huawei eNodeB Site Solution and Installation Key Point

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Security Level: Internal

47pt

30pt

:

FrutigerNext LT Medium

: Arial

47pt

28pt

Huawei LTE eNodeB Site Solution &

Installation Key Point

V1.4

2012-March 28

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

35pt

32pt

) :18pt

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 RRU3232 < 45m

0~45m

46~100m

46 RRU 100m

DCDU-11B OCB 3.3

RRU3232

> 45m &


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Page 4

BBU and DCDU install on the Transmission Cabinet

1) Power cable of RRU from Sector A connected Load 0; Power cable of another RRU

connected to Load 1; Power cable of BBU connected to Load 6.

2) CPRI Fiber of RRU from Sector A connected to CPRI 0 on LBBP board; CPRI Fiber of

another RRU connected to CPRI 1 on LBBP board.

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

0

4) CPRI Fiber should be tied with Hook & Loop Mechanical Fastener.

5) 1 U space should be reserved between BBU and DCDU.

5


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Page 5

Cable connection for RRU installed on Tower

(Extended RET cable between two RCUs use 15m)

Sector B Sector A Sector C

ANT0 ANT1 ANT2 ANT3

ANT0 ANT1

ANT0 & ANT1 of RRU0 are connected to +45 & -45 port of sector A antenna; ANT2 & ANT3 of RRU0 are connected to +45 & -45 port of sector C antenna; ANT0 & ANT1 of RRU1 are connected to +45 & -45 port of sector B antenna.

RRU 0 RRU 1

-45 +45

-45 +45

-45 +45

15M

Extended

RET cable


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Page 6

RRU installed on Tower

Sector A Sector B

RRU0 is installed on the same pole with

antenna of sector A;

RRU1 is installed on the same pole with

antenna of 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 7

Cable connection for RRU installed on roof pole site

(Extend RET cable between two RCUs use 30m)

ANT0 ANT1 ANT2 ANT3

ANT0 ANT1

-45 +45

-45 +45

-45 +45

Make the feeder to be shortest when you choose Sector 1 and 2 to share one RRU When the distance between two sectors is longer than 12m, and shorter than 40m. Use the

7/8 feeder;

Feeder

Sector 3 Sector 1 Sector 2

30M

Extended

RET cable


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Page 8

Cable connection for RRU installed on roof pole site

(Extend RET cable between two RCUs use 50m)

ANT0 ANT1 ANT2 ANT3

ANT0 ANT1

-45 +45

-45 +45

-45 +45

SBT must connected to ANT0 of RRU. The feeder to be shortest when you choose Sector 1 and 2 to share one RRU When the distance between two sectors is longer than 12m, and shorter than 40m. Use the

7/8 feeder;

When the distance between two sectors is longer than 40m, then use 13/8 feeder.

Feeder

Sector 3 Sector 1 Sector 2

50M

Extended

RET cable

0.5M RET

cable


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Page 9

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 10

Antennas cable connection

23

1) RCU is connected to the TILT as the picture.

2) +45 is the port 0 for antenna.

3) - 45 is the port 1 for antenna.

4) The vacant port of the antenna should be

waterproofed.

5) The TILT cover of vacant port should be

fasten.

5

1

4


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Page 11

Antennas Labeling

Sector A Sector B Sector C

ANT_0A

ANT_1A

ANT_0B

ANT_1B

ANT_0C

ANT_1C


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Page 12

GPS installation

GPS Antenna

Arrestor

GPS antenna is suggested to installed on the cable tray.

Arrestor is not allowed to touch the cable ladder.

The Arrestor should be grounded.


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Page 13

RRU Label Rules

RRU Label Rules

Sector: A BC Path: 0123

RRU 0

AN

T_

0A

AN

T_

1A

AN

T_

0C

AN

T_

1C

RRU 1

AN

T_

0B

AN

T_

1B


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Page 14

LTE Network Topology

Chapter2: Installation Key Point and Mistake

CONTENTS

Chapter1: Site Solution


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Page 15

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 16

Connect the power cable to the right port

Wrong Right

Notes 1. Power cable of RRU0 should be connected to LOAD0, label with LTE PWR RRU0

2. Power cable of RRU1 should be connected to LOAD1, label with LTE PWR RRU1

3. BBU should be connected to LOAD6, label with PWR BBU

PS: RRU0 is connected to the sector A antenna


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Page 17

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 18

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 19

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 20

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 21

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 22

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 23

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 24

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 25

The vacant RF ports of the RRU are waterproofed.

Wrong Right

Notes Vacant RF ports of RRU are covered with waterproof caps and the caps are tightened.


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Page 26

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 27

The vacant RF ports of the antenna are waterproofed.

Wrong Right

Notes Vacant RF ports of antenna are covered with waterproof caps and the caps are tightened.


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Page 28

The RF cable of GPS cant be circled.

Wrong Right

Notes The redundancy RF cable of GPS should be cut. Dont circle it if it is too long.

GPS_0


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Page 29

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 30

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 31

The power cable should be grounded in the OCB.

Wrong Right

Notes The metal shield of the power cable should be grounded inside the OCB.


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Page 32

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 33

OCB should be grounded

Wrong Right

Notes The OCB should be grounded.


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Page 34

The waterproof cover of OCB should be fasten.

Wrong Right

Notes


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Page 35

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.

Download - Huawei eNodeB Site Solution and Installation Key Point

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