ran_eng_3g site engineering solution(for the whole network)_v1.2_20140123

RAN_ENG_3G Site Engineering solution

(for the whole network) _V1.2_20140110

RAN_ENG_3G Site Engineering solution (for the whole network) _V1.2_20140110

2

Version Date Author Approved By Remarks

V1.0 2014-01-10 Huang Xiao Created

V1.2 2014-01-23 Huang Xiao modifications

2011 ZTE Corporation. All rights reserved.

ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be

disclosed or used without the prior written permission of ZTE.

Due to update and improvement of ZTE products and technologies, information in this document is

subjected to change without notice.


3

Catalogue

1. Introduction ............................................................................................................................................ 4

1.1 Purpose............................................................................................................................................. 4

1.2 Scope ................................................................................................................................................ 4

2. General Introduction of the BTS Upgrade Solution .............................................................................. 5

BPK board slot guideline ....................................................................................................................... 5

3. RF System upgrade Solution ................................................................................................................. 6

R8860E interface description: ................................................................................................................ 7

R8881 Interface description ................................................................................................................... 8

3.1 RF system Swap Scenarios ............................................................................................................ 11

Scenario-1: 2G single band sector, FS board available for 3G. ................................................... 11

Scenario-2: 2G Single band 900M sector S4, FS board available for 3G. ................................... 12

Scenario-3: 2G Single band 1800M sector S1-S4, FS board available for 3G. ............................ 13



Scenario-6: Single band 1800M sector S9-S12, FS board available for 3G. ................................ 16

Scenario-7: Dual band 900M&1800M, S1-3, FS board available for 3G. ................................... 17

Scenario-8: Dual band 900M S1-S3, 1800M S4 or 900M S4 1800M S1-S4, FS board not

available for 3G RRU .................................................................................................................. 18

Scenario-9: Dual band 900M S1-S4, 1800M S5-S6, FS board available for 3G. ........................ 19

Scenario-10: Dual band 900M S1-S4, 1800M S7-S10, FS board available for 3G. .................... 20

Scenario-11: Indoor micro site using BS8908. ............................................................................ 21

FS-RSU/RRU Relations Guideline ...................................................................................................... 22

4. Antenna solution ...................................................................................................................................... 23

1. TP Sharing sites........................................................................................................................ 23

2. TP Build sites. .......................................................................................................................... 23

5. Power Supply Solution ............................................................................................................................ 24

For 2G power supply, there are 2 scenarios as below: ......................................................................... 24

For distributed sites(BS 8700), A DCPD4 module will be configured for 3G RRU power supply ..... 24

For the Macro sites(BS 8900A), one 16A breaker will be changed to a 63A breaker for 3G RC

cabinet .................................................................................................................................................. 25

Glossary:

RRU Remote Radio Unit

LPU Lightning Protection Unit

OLP Outdoor Lightning Protection


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TOC Top of Cabinet

1. Introduction

1.1 Purpose

This documentation will describe in detail the 3G site engineering solution from the existing ZTE 2G

BTS to the 2/3G BTS/NodeB .

This document is only valid together with all approved product manuals and engineering handbooks.

Its purpose is to show a small variety of BTS upgrade solution in detail and to serve as quick reference

for quality checks.

1.2 Scope

This documentation is customized for the Telenor Pakistan 3G project and based on 2G swap

solution.


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2. General Introduction of the BTS Upgrade

Solution

For 3G sites, we just need to add BPK board (baseband board) in the existing 2G BBU and 3G

RRUs/RSUs for the RF part.

New RRU will be cascaded to existing RRU for saving FS board.

BPK board slot guideline

For the sites are using BS8700, BPK board will be normally configured at BBU slot 6.

If there are 3 UBPG already configured, BPK will be configured at slot 5.

If SE board is configured at slot 5, during upgrade, the 3rd

UBPG will be moved to slot 4, then BPK

could be plugged at slot 6.

For the sites are using BS8900A, BPK board will normally be configured at BBU slot 6.

If there are 3 UBPG already configured, BPK will be configured at slot5.

If SE board is configured at slot 5, 3G will not be upgraded until original rectifier cabinet is swapped by

W301 rectifier, so that the 8 external alarms can be provided by W301, then BPK could take slot 5

instead of SE board.

BPK board will be prior plugged in BBU slot 6.

Figure- B8200 layout


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3. RF System upgrade Solution

There are 11 RF system scenarios during the 2G Site Swap:

Single Band

900M S1~S3 MBR

S4 R8860E/R8881

1800M

S1~S4 R8860E/R8881

S5~S6 R8882

S7~S8 R8860E/R8881+R8860E/R8881

S9~S12 R8882+R8882

Dual Band

900M 1800M Configuration

S1~3 S1~S3 MBR

S1~3 S4 R8860E/R8881 (900M)+R8860E/R8881 (1800M)

S4 S1~S4 R8860E/R8881 (900M)+R8860E/R8881 (1800M)

S1~4 S5~S6 R8860E/R8881 (900M)+R8882(1800M)

S1~4 S7~S10 R8860E/R8881

(900M)+R8882(1800M)+R8860E/R8881 (1800M)

MBR is the Dual band R8882 which can work at both 900M and 1800M.

For 3G RRU, only 2100M R8881 will be used. And which could be only cascaded with R8860E and

R8881.


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R8860E interface description:

The interfaces are described in the following table:

No Label Interface Interface type/connector

1 LC1

BBU and RPU Interfaces/

RRU concatenation

interface

LC optical interface (IEC 874)

2 LC2

BBU and RPU Interfaces/

RRU concatenation

interface

LC optical interface (IEC 874)

3 AISG AISG device interface 8-cores socket (IEC 60130-9-ED)

4 Mon External device interface 37-core aviation socket

5 PWR Power supply interface

AC interface: Connector

XCE18T3K1P1-02+FJJP1-7.5 Cable

section area: 3*1 mm2

DC interface: Connector

XCG18T4K1P1-01+XC18FJJP1-10.5

Cable section area: 4*1.5 mm2

6 RX Interface to receive

diversity RF cable 50 ohms DIN-mode Connector

7 RX/TX

Interface to

transmit/receive main

diversity RF cable

50 ohms DIN-mode Connector


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No Label Interface Interface type/connector

8 RX

out

Frequency expansion

interface N-KY (MIL-C-39012 or IEC169-16)

9 RX in Frequency expansion

interface N-KY (MIL-C-39012 or IEC169-16)

10 GND Machine grounding Section area of cable is 16 mm2

R8881 Interface description


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No. Label Interface Interface/Connector Applications

1 Rx in Combined

cabinet interface

N type connector Diversity receive

signal input

2 Rx out N type connector Diversity receive

signal output

3 Protection

ground interface

16 mm2 yellow/green

round terminal

Protection

grounding

4 ANT1

TX/RX

Transmit/Receive

antenna feeder

interface

DIN type connector Connection with the

antenna feeder

5 ANT2

RX

Receive antenna

feeder interface DIN type connector

6 OPT1

Interface for

communication

between the BBU

and RRU

LC type optical

interface(IEC 874) Signal transmission

between the RRU

and BBU

7 OPT2 RRU cascading

interface

LC type optical

interface(IEC 874)

8 AISG AISG equipment

interface

8-pin socket square

plate installation

AISG signal

connection for

electrically tuning

antenna


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No. Label Interface Interface/Connector Applications

9 MON

MON external

monitoring

interface

8-pin round socket

panel installation

straight cable welding

Signal interaction

between the RRU

and external

equipment

including alarming

and RS485 control

four pairs of dry

contact inputs

10-1

10-2 PWR

Power input

interface

10-1: R8881 DC

chassis uses a 2pin

round connector

10-2: R8881 AC

chassis uses a 3pin

round connector

DC power input

interface: provides

-48 V DC power

AC power input

interface: provides

AC power

11 LMT O&M Ethernet

interface

8P8C angle socket

PCB shielded welding

LED phone (LED

indicators: yellow for

left indicator and

green for right

indicator)

RRU O&M and

internal signal

output


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3.1 RF system Swap Scenarios

Scenario-1: 2G single band sector, FS board available for 3G.

For this scenario, MBR was used for GSM, while slot 3, 4, 5 of FS board is available for 3G RRU.

MBR

900M

ANT1 ANT2 OPT1

Optical Fiber

Jumper

3G

R8881

OPT1

ANT1ANT2

3G

2100M


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Scenario-2: 2G Single band 900M sector S4, FS board available

for 3G.

For this scenario, R8860E/8881 was used for GSM, while slot 3, 4, 5 of FS board is available for 3G

RRU.

R8860E

900M

RX RX/TXLC1

Optical Fiber

Jumper

OPT1ANT1ANT2

R8881

3G

2100M


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Scenario-3: 2G Single band 1800M sector S1-S4, FS board

available for 3G.

For this scenario, R8860E/8881 was used for GSM, while slot 3, 4, 5 of FS board is available for 3G

RRU.

R8860E

1800M

RX RX/TXLC1

Optical Fiber

Jumper

OPT1ANT1ANT2

R8881

3G

2100M


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available for 3G.

For this scenario, R8882 was used for GSM, while slot 3, 4, 5 of FS board is available for 3G RRU.

R8882

1800M

ANT1 ANT4OPT1

Optical Fiber

Jumper

ANT1ANT2

OPT1

R8881

3G

2100M


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available for 3G.

In this scenario, Two R8860E/8881 were cascaded by both optical fiber and cascading cable, While slot

3, 4, 5 of FS board is available for 3G RRU.

R8860E R8860E

1800M

LC1

LC2

LC1

RX out

RX inRX out

RX inRX/TX

RX/TX

Optical Fiber

Cascading cable

Jumper

R8881

3G

2100M

Figure


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Scenario-6: Single band 1800M sector S9-S12, FS board

available for 3G.

Some VIP sites, two R8882 were cascaded for GSM, while slot 3, 4, 5 of FS board is available for 3G

RRU.

R8882 R8882

1800M 1800M

ANT1 ANT4 ANT1 ANT4

OPT1OPT2 OPT1

Optical Fiber

Jumper

3G

2100M

ANT1ANT2

R8881

OPT1

Figure


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Scenario-7: Dual band 900M&1800M, S1-3, FS board available

for 3G.

For this scenario, MBR was used for GSM 900M&1800M, while slot 3, 4, 5 of FS board is available for

3G RRU.

900M 1800M

MBR

ANT1

ANT2

ANT3

ANT4

OPT1

Optical Fiber

Jumper

R8881

OPT1ANT1ANT2

3G

2100M


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Scenario-8: Dual band 900M S1-S3, 1800M S4 or 900M S4

1800M S1-S4, FS board not available for 3G RRU

In this scenario, two R8860E/R8881 were cascaded for GSM 900M&1800M, slot 3, 4, 5 of FS board is

not available for 3G RRU.

R8860E R8860E

900M 1800M

RX RX/TX RX RX/TXLC1 LC1

Optical Fiber

Jumper

3G

2100M

R8881

LC1

LC2

Figure:


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Scenario-9: Dual band 900M S1-S4, 1800M S5-S6, FS board

available for 3G.

In this scenario, one R8860E/R8881 was used for 900M; one R8882 was used for 1800M. While there is

no FS port available for 3G RRU, The 3G RRU will be cascaded with R8860E/R8881.

R8860E

900M 1800M

R8882

RX RX/TX

LC1

ANT1 ANT4

OPT1

LC2

OPT1

3G

2100M

ANT1ANT2

R8881


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Scenario-10: Dual band 900M S1-S4, 1800M S7-S10, FS board

available for 3G.

In this scenario, one R8860E/R8881 was used for 900M, one R8860E/R8881 and one R8882 were used

for 1800M, and one R8881 will be used for 3G. The three R8860E/R8881 will be cascaded by Optical

Fiber.

R8860E

900M 1800M

R8882

R8860E

1800M

LC1

LC2

RX RX/TX

ANT1 ANT4

OPT1RX RX/TX

LC1

Optical Fiber

Jumper

3G

2100M

OPT1ANT1ANT2

R8881

LC2


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Scenario-11: Indoor micro site using BS8908/BS8700.

For this scenario, 2G is using BS8908/BS8700. 3G will build a new site co-site with 2G. RF part will use

a combiner to combine 2G&3G to the splitter for indoor coverage.

GSMBS8908

UMTSR8881

Combiner SplitterTX/RX

ANT1

GSMBS8700

UMTSR8881

Combiner SplitterTX/RX

ANT1


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FS-RSU/RRU Relations Guideline

In addition to RSU layout principles and connections between FS and RSU/RRU, the port

connections between antennas and RSU/RRU should also be considered (such as the case of one

RSU supporting one or two cells or two RSUs supporting one cell).

a) RSU layout principles:

3G RSU

The RSUs are placed into the cabinet from left to right (No slot leaves empty) in the following

order:

3 empty RSU slots in the existing RC cabinet, 3G RSU will be installed in these slots by

the order 4,5,6.

No available slot for 3G RSU in the existing RC cabinet, a new RC cabinet will be added.

b) The connections between FS and RSU/RRU should comply with the following rules:

Fiber or SFP Cable connections between FS and RRU/RSU

In case of using one FS card: The FS card is placed at slot3 of BBU. The ports of FS card are

numbered from 0 to 5 (from right to left).The RSU/RRU units are connected to the FS ports in

the following order from port No. 0 to port No. 5 (No port leaves empty):

GSM 900 RSU/RRU in order of cells (lower at first) takes 0, 1, and 2

DCS1800 RSU/RRU in order of cells (lower at first) takes 3, 4, and 5

If there is no DCS1800M, UMTS 2100M will take FS 3,4,and 5.

Otherwise, UMTS 2100 RRU will be cascaded with R8860E/R8881.

For RSU, a new FS board will be configured.


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4. Antenna solution

1. TP Sharing sites.

For these sites, space on the tower is not available for installing the RRU and new antenna. In this case,

A new RRU pole will be added on the ground, all the single/dual band antennas will be changed to

Tri-band antennas.

2. TP Build sites.

For these sites, a new 2100M single band antenna will be added for each sector.

a. Sufficient space on the tower, the 2100M antenna will be installed above 1800M antenna.

b. Insufficient space on the tower, a diversity pole will be installed with 1800M antenna pole. 2100M

antenna will be installed beside 1800M antenna.


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5. Power Supply Solution

For 2G power supply, there are 2 scenarios as below:

Scenario1

For the Non EOL site, There is at least one breaker available on the original rectifier for

BBU power supply(10A). All 8 output port can be used for 8 RRUs.

For the Non EOL site, there is no breaker available for the BBU power supply, The first

port of DCPD4 will be used for BBU power supply, second port will be the backup for

BBU, third port to eighth port used for RRU.

Scenario2

For the EOL site, 7 ports in LVLD can be used for RRU power supply.

For distributed sites(BS 8700), A DCPD4 module will be configured for 3G RRU power supply


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For the Macro sites(BS 8900A), one 16A breaker will be changed to a 63A breaker for 3G RC cabinet

The end

ran_eng_3g site engineering solution(for the whole network)_v1.2_20140123

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