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ISSUEISSUE

WCDMA Base StationWCDMA Base Station

System PlanningSystem Planning1.01.0

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Course Objective

Know the notes for the co-existence of

multiple systems.

Familarize the principles for BS site

selection.Familarize the principles for antenna

selection and installation.

Know the causes of call breathing and pilot

polution and the related solutions.Know the evolution and capacity expandion

of the network.

After this session, you will:

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Contents of Course

raining.huawei.com

Chapter 1 Multi-system Coexistence Planning

Chapter 2 BS Site Selection

Chapter 3 Antenna ee!er Syste" #esi$n

Chapter % &ilot &ollution an! Cell Breathin$

Chapter ' (etwor) E*olution an! Capacity

E+pansion Sche"e

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Chapter 1 Multi-system Coexistence Planning

1 Inter-system Interference1 Inter-system Interference

2 Intersyste" Isolation -euire"ents

3 2/3/ Colocate! Site

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Inter-system Interference Spurious ra!iationSpurious ra!iation !he spurious noise generated during the

modulation and the non-linear noise generated during thetransmission.

Inter"o!ulation pro!uctInter"o!ulation pro!uct!"nter-modulation caused by

harmonic wave and parasitic wave.

#ctive$ he non-linear part of the active component. "t

can be filtered out by the device.

%assive$ he non-linear part of the passive component.

"t cannot be filtered out by the device.

-ecei*er loc)-ecei*er loc)!&aused by the carrier power of a differentsystem.

ther EC prole"sther EC prole"s! Feeder' antenna' transimtter' and

receiver.

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Inter-system Interference

4ey points4ey points

Interference of the !ownstrea" spurious noise on the 5C#A BS

Interference of the 6#SC#A upstrea" si$nal on the 5C#A BS

Colocate! BS of 5C#A an! /SColocate! BS of 5C#A an! /S

Effecti*ely control the "utual interference of 5C#A an! /S

syste"s

a)e full use of the le$acy resources

Interference prole" with the !eploy"ent of 5C#A networ)

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Chapter 1 Multi-system Coexistence Planning

1 Intersyste" Interference1 Intersyste" Interference

2 Inter-system Isolation Requirements

3 2/3/ Colocate! Site

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Isolation Requirements

or e+a"ple:or e+a"ple:"f the transmit power of a ()S BS is *+ dBm' the block of

the BS can be avoided only when the acceptable maximum inbandinterference level is -, dBm.

/S 700 /S 1800 U6S

-ecei*e an! 9U; /0 1 /, )2z ,3,0 1 ,3 )2z ,/40 1 ,/0 )2z

6rans"it an! 9#; /+ 1 /50 )2z ,0 1 ,0 )2z 4,,0 1 4,30 )2z

6&S,00 7x6&S,00 7x 6&S,00 x6&S,00 x 8&6)# 7x8&6)# 7x 8&6)# x8&6)# x

1

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ypical Isolation Requirements

-euire! Isolation

Ite"

/S 700 /S 1800to U6S

-+

U6S 6+ to/S 700

-+

U6S 6+ to/S 1800

-+

U6S 6+to U6S

-+

Bloc) isolation dB *0 dB * dB 5+ dB

SpuriousnoiseInter"o!ulation

pro!uct

+/ dB +* dB +* dB +/ dB

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Isolation Measures

Isolation are $uarantee! in !ifferent ways

!uple+er!uple+er

filterfilter

1.1. Antenna selection an!Antenna selection an!

antenna location !esi$nantenna location !esi$n2. ilterin$ out interference2. ilterin$ out interference

si$nal throu$h a filtersi$nal throu$h a filter

3. In case of colocate! fee!er, usin$3. In case of colocate! fee!er, usin$

!uple+ertriple+er > roa!an! antenna!uple+ertriple+er > roa!an! antenna

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Chapter 1 Multi-system Coexistence Planning

1 Intersyste" Interference1 Intersyste" Interference

2 Intersyste" Isolation -euire"ents

3 2G/3G Co-locate !ite

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!"#$" Co-locate% &ite

6he /S an! C#A site resources in the le$acy syste"6he /S an! C#A site resources in the le$acy syste"

shoul! e fully reference! an! use! in the 3/ networ).shoul! e fully reference! an! use! in the 3/ networ).

Site colocation helps to re!uce the nu"er of sites an!

"a)e full use of resources such as euip"ent, tower, an!

rooftop, thus re!ucin$ site cost an! i"pro*in$ the

!eploy"ent efficiency of 3/ networ).

Site colocation "ini"i=es the intersyste" interference an!

"a)es the interference controllale.

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!"#$" Co-locate% &iteShare! ite"s: euip"ent roo", tower, antenna,

fee!er, trans"ission euip"ent, power supplyan! stora$e attery, air con!itioner, an! so on.

Bias6 Bias6

#iple+er #iple+er

3?A

3?A

Bias6

Bias6

8&6)#9odeB

:S)

BS

Iu

AisIu

6oro"BSC-(C

#iple+er

#iple+er

&wr

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Chapter 1 Multi-system Coexistence Planning

1 Intersyste" Interference1 Intersyste" Interference

2 Intersyste" Isolation -euire"ents

3 2G/3G Co-locate !ite

Co-locate "o#er$ %ntenna Pole$Co-locate "o#er$ %ntenna Pole$

an Rooftopan Rooftop

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Co-locate% o'er( )ntenna Pole( an% Rooftop

If the 5C#A an! /S700#CS1800 share the tower,

antenna, or rooftop, the "a@or prole" lies in the inter

syste" interference.

6he interference inclu!es the interference of the 5C#A on

/S700#CS1800 an! that of the /S700#SC1800 on

5C#A.

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Co-locate% o'er( )ntenna Pole( an% Rooftop

Interference in case of colocate! tower,Interference in case of colocate! tower,

antenna pole, an! rooftopantenna pole, an! rooftop

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Co-locate% o'er( )ntenna Pole( an% Rooftop

Isolation reuire"ents for !ifferent interferenceIsolation reuire"ents for !ifferent interference$

he interference of the :S);6&S on the 8&6)# re

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Chapter 1 Multi-system Coexistence Planning

1 Intersyste" Interference1 Intersyste" Interference

2 Intersyste" Isolation -euire"ents

3 2G/3G Co-locate !ite

%&antages of co-feeer%&antages of co-feeer

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Co-fee%er

A!*anta$es of cofee!erA!*anta$es of cofee!er

he legacy feeder is used' simplified the construction andreduces the cost

"f the antenna isolation does not meet the re

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Implementation of Co-fee%er

Isolation '0!B Isolation '0!B

Colocate! fee!er of 5C#A an! /S7000

8&6)#:S)

)#

:S) 8&6)#

6uplex filter >#?&ombinable

&olocated feeder

8&6)#:S)

:S) 8&6)#

@ptional)#

6uplex filter >#?

6uplex filter >#?

&olocated feeder

Filter >#?

6uplex filter >#?

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Co-transmissionCo-transmission

At the early sta$e of 5C#A construction, /S pro*i!esAt the early sta$e of 5C#A construction, /S pro*i!es

E1S#? 9Iu interface; trans"ission resources for the 5C#A.E1S#? 9Iu interface; trans"ission resources for the 5C#A.

BSBS

9odeB9odeB

A,;S62>"ub?

(+%)ps(+%)ps

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9odeB

Co-transmissionCo-transmission

At the "ature sta$e of the 5C#A construction, the reuire!At the "ature sta$e of the 5C#A construction, the reuire!

capacity of the 5C#A syste" is hi$h, an! the 5C#A cancapacity of the 5C#A syste" is hi$h, an! the 5C#A can

pro*i!e trans"ission channels for the /S.pro*i!e trans"ission channels for the /S.

BS

A,;S62>"ub?

E1E1

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Co-transmission &olution of *ua'ei

Cotrans"ission solution for 3/ an! 2/ BSs of ?uawei:Cotrans"ission solution for 3/ an! 2/ BSs of ?uawei:

In case of colocate! trans"ission, the s"allest allocale

unit can an E1 lin) or so"e ti"eslots of an E1 lin).

Currently, (o!eB can !i*i!e one 2ps E1 lin) into se*eral

%)ps ti"eslots for allocation, re$ar!less of the

trans"ission "o!e of the trans"ission euip"ent.

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Co-transmission &olution of *ua'ei

ractional A6ractional A6

9odeB

BSBS&

79&

A