Security Level: Internal
Huawei LTE eNodeB Site Solution & Installation Key Point V1.0
www.huawei.com
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
LTE Network Topology CONTENTS Chapter1: Site Solution
Chapter2: Installation Key Point and Mistake
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Huawei Confidential
Page 2
RRU Power Cable Solution
0~100m
DCDU-11B
RRU3938 < 100m
Notes: If the power cable length(between RRU and DCDU) >100m, please contact Huawei Site Engineer for special solution。
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BBU and DCDU install on the Transmission Cabinet
5
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. HUAWEI TECHNOLOGIES CO., LTD.
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RRU installed on Tower 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
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Sector C
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Cable connection for RRU
-45 +45
ANT0 ANT1
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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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.
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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
Antennas Labeling
ANT_1A
ANT_1B
ANT_1C
ANT_0A
ANT_0B
ANT_0C
Sector A HUAWEI TECHNOLOGIES CO., LTD.
Sector B Huawei Confidential
Sector C Page 8
RRU Feeder Label and Color Feeder Mark Rules
RRU 0
0
ANT_0A
ANT_1A
1
Color Feeder Mark
Feeder Label
RRU Label Rules： Sector: A 、B、C RRU Path: 0、1、 Color Feeder Mark: A(Red)、B(yellow)、C(Blue); all with two while ring code to separate with TDD HUAWEI TECHNOLOGIES CO., LTD.
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Antenna Feeder Label and mark rules XXX XXX XXX
XXX XXX XXX
XXX XXX XXX
Antenna A
Antenna B
Antenna C
A
B
C
RCU +45 -45 -45 +45 RCU
RCU +45 -45 -45 +45 RCU
RCU +45 -45 -45 +45 RCU
ANT_1C
ANT_0C
ANT_1B
Make mark with color ring
ANT_0B
ANT_1A
ANT_0A
Make mark use alphabet
Feeder Label
RRU Label Rules： Sector: A 、B、C Path: 0、1、2、3 Color Ring: A(Red)、B(yellow)、C(Blue); all with two while ring code to separate with TDD HUAWEI TECHNOLOGIES CO., LTD.
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LTE Network Topology CONTENTS Chapter1: Site Solution
Chapter2: Installation Key Point and Mistake
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Page 11
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 12
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 HUAWEI TECHNOLOGIES CO., LTD.
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Page 13
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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The CPRI fiber should be tied. Wrong
Right
Notes： The CPRI fiber should be tied with Hook & Loop Mechanical Fastener. Don’t use cable tie.
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Page 15
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. Don’t put it outside the tower or on the cable tray.
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Page 16
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 17
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 18
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 19
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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The waterproof plugs are filled in the vacant troughs
Right
Notes： The water plugs should be filled in the vacant troughs of the RRU cabling cavity.
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Page 21
Wrong
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. HUAWEI TECHNOLOGIES CO., LTD.
Huawei Confidential
Page 22
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 23
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 24
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 25
Keep the environment of the site neat and clean Wrong
Right
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.
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