Huawei eNodeB Site Solution and Installation Key Point

Security Level: Internal

Huawei LTE eNodeB Site Solution & Installation Key Point V1.4 2012-March 28 www.huawei.com

HUAWEI TECHNOLOGIES CO., LTD.

Huawei Confidential

LTE Network Topology CONTENTS Chapter1: Site Solution Chapter2: Installation Key Point and Mistake


Huawei Confidential

Page 2

RRU Power Cable Solution

Power Cable: 3.3mm^2-2*12AWG

0~45m

DCDU-11B

RRU3232 < 45m

46~100m

DCDU-11B

3.3方直流 Power Cable: 8.2mm^2-2*8AWG

OCB

<1m

> 45m & <100m 46≤ RRU拉远距离≤ 100m

Notes:

If the power cable length(between RRU and DCDU) >100m, please contact Huawei Site Engineer for special solution。


Huawei Confidential

Page 3

RRU3232

BBU and DCDU install on the Transmission Cabinet

5

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. HUAWEI TECHNOLOGIES CO., LTD.

Huawei Confidential

Page 4

Cable connection for RRU installed on Tower (Extended RET cable between two RCUs use 15m) RRU 0

RRU 1

-45 +45

-45 +45

-45 +45

15M Extended RET cable ANT0 ANT1 ANT2 ANT3

ANT0 ANT1

Sector A

Sector C

Sector B

 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. HUAWEI TECHNOLOGIES CO., LTD.

Huawei Confidential

Page 5

RRU installed on Tower  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 A

Sector B


Sector C

Huawei Confidential

Page 6

Cable connection for RRU installed on roof pole site (Extend RET cable between two RCUs use 30m)

-45 +45

-45 +45

-45 +45

Feeder 30M Extended RET cable

ANT0 ANT1 ANT2 ANT3

Sector 1

ANT0 ANT1

Sector 2

Sector 3

 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;


Huawei Confidential

Page 7

Cable connection for RRU installed on roof pole site (Extend RET cable between two RCUs use 50m)

-45 +45

0.5M RET cable

-45 +45

-45 +45

Feeder

ANT0 ANT1 ANT2 ANT3

   

50M Extended RET cable

ANT0 ANT1

Sector 1 Sector 2 Sector 3 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. HUAWEI TECHNOLOGIES CO., LTD.

Huawei Confidential

Page 8

Cable connection inside RRU cabling cavity.

1

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.

2 3 HUAWEI TECHNOLOGIES CO., LTD.

Huawei Confidential

Page 9

Antennas cable connection 1) 2) 3) 4)

RCU is connected to the TILT as the picture. +45 is the port 0 for antenna. - 45 is the port 1 for antenna. The vacant port of the antenna should be waterproofed. 5) The TILT cover of vacant port should be fasten.

1 2、3

5

4


Huawei Confidential

Page 10

Antennas Labeling

ANT_0A

ANT_0B

ANT_0C

ANT_1A

ANT_1B

ANT_1C

Sector A HUAWEI TECHNOLOGIES CO., LTD.

Sector B Huawei Confidential

Sector C Page 11

GPS installation  GPS antenna is suggested to installed on the cable tray.  Arrestor is not allowed to touch the cable ladder.  The Arrestor should be grounded.

Arrestor GPS Antenna HUAWEI TECHNOLOGIES CO., LTD.

Huawei Confidential

Page 12

RRU Label Rules

ANT_1B

ANT_0B

RRU 1

ANT_1C

ANT_0C

ANT_1A

ANT_0A

RRU 0

RRU Label Rules：

Sector: A 、B、C Path: 0、1、2、3


Huawei Confidential

Page 13

LTE Network Topology CONTENTS Chapter1: Site Solution Chapter2: Installation Key Point and Mistake


Huawei Confidential

Page 14

Safety belt and cap is extremely needed. Right

Wrong

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


Huawei Confidential

Page 15

Connect the power cable to the right port Right

Wrong

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 HUAWEI TECHNOLOGIES CO., LTD.

Huawei Confidential

Page 16

Remove the shield of the power cable near connector Right

Wrong

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


Huawei Confidential

Page 17

The CPRI fiber should be tied. Right

Wrong

Notes： The CPRI fiber should be tied with Hook & Loop Mechanical Fastener. Don’t use cable tie.


Huawei Confidential

Page 18

Put the redundant fiber on the Transmission Rack bottom Right

Wrong

Notes： The redundant fiber should be circled and put on the bottom of the transmission rack. Don’t put it outside the tower or on the cable tray.


Huawei Confidential

Page 19

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

Wrong

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


Huawei Confidential

Page 20

Ground the DCDU on the Transmission Cabin Right

Wrong

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


Huawei Confidential

Page 21

Installed the bracket assembly on the right direction Right

Wrong

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


Huawei Confidential

Page 22

The metal shield of RRU power cable is wrongly cut. Right

Wrong

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.


Huawei Confidential

Page 23

The waterproof plugs are filled in the vacant troughs Right

Wrong

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


Huawei Confidential

Page 24

The vacant RF ports of the RRU are waterproofed. Right

Wrong

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


Huawei Confidential

Page 25

Labeling the Jumpers of the RRU with the correct Label Right

Wrong

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. HUAWEI TECHNOLOGIES CO., LTD.

Huawei Confidential

Page 26

The vacant RF ports of the antenna are waterproofed. Right

Wrong

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


Huawei Confidential

Page 27

The RF cable of GPS can’t be circled. Right

Wrong

GPS_0

Notes： The redundancy RF cable of GPS should be cut. Don’t circle it if it is too long.


Huawei Confidential

Page 28

Remove the oil paint of the tower for grounding point Right

Wrong

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


Huawei Confidential

Page 29

The power cable are grounded beside the Roxtec Right

Wrong

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


Huawei Confidential

Page 30

The power cable should be grounded in the OCB. Right

Wrong

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


Huawei Confidential

Page 31

BBU and DCDU should be fixed with screws. Right

Wrong

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


Huawei Confidential

Page 32

OCB should be grounded Right

Wrong

Notes： The OCB should be grounded.


Huawei Confidential

Page 33

The waterproof cover of OCB should be fasten. Right

Wrong

Notes：


Huawei Confidential

Page 34

Keep the environment of the site neat and clean Right

Wrong

Notes： Keep the environment of the site neat and clean. Don’t leave any boxes, cables, bottles… inside and outside the shelter. Take all the garbage away the site.


Huawei Confidential

Page 35

Huawei eNodeB Site Solution and Installation Key Point

Recommend Documents