Combining & No Combining

7/25/2019 Combining & No Combining

1/78

Huawei BTS,Confguration andcoupling

system

Ubaid Fawad


2/78

Architecture

PST!S"

PSP"

Um !nter#ace

BTS$%&'

BTS$%&'

BTS$%&'

BTS$%&'

()C

H*+AUC-!+

BSC

)SC.*+

S)C.)

A!nter#ace

MAP

M

AP

TUP,!SUP)S

)S

)S

MS: Mobile Station BTS: Base TransceiverStation

BSC: Base StationController

HLR: Home LocationRegister

AUC: AuthenticationCenter

EIR: Equiment I!entit"Register

MSC: Mobile S#itchingCenter

$LR: $isitor LocationRegister

SMC: Short MessageCenter

$M: $oice Mailbo% &MC: &eration an! Maintenance Center


3/78

Huawei BTS


4/78

)acro BTS used inU#one

BTS $%&' /indoor0, $%&'A- /outdoor0

)ain cards /""PU and "T+U0

BTS $1%% /indoor0, $1%%A /outdoor0

)ain cards /"+FU and 2+FU0


5/78

$%&' BTS cabinet


6/78

$%&'A- BTS cabinet


7/78

Function and #eatures

Support2S)3%%) 34%) 1%%) &3%%) and&1%%)

Support 2P+S and -"2-

Support dynamic and static power control


8/78

Contd

"ouble Transcei5er Unit /"T+U06 A singlecabinet can support up to &' carriers6

Support Power Boost Technology /PBT0

Support more 5arious transmission mode

includes -&, ST)7&, microwa5e, and

satellite transmission


9/78

"T+U8"oubletranscei5er unit

9 Sending multi +F signals#rom the transcei5er in the"T+U to the antennathrough the duple:er

9 Sending signals #romthe antenna a#terampli#ying and ;uarteringthem to the transcei5er in

the "T+U9 "etecting standingwa5e alarms in theantenna system


10/78

""PU8"ouble duple:er unit

9 Sending multi +F signals #romthe transcei5er in the "T+U to theantenna through the duple:er

9 Sending signals #rom theantenna a#ter ampli#ying and;uartering them to thetranscei5er in the "T+U

9 "etecting standing wa5ealarms in the antenna system


11/78

$1%% and $1%%A


12/78


13/78

BTS $1%% components

BBU

"+FU2+FU

"C"U

Fan unit


14/78

Benefts o# BTS $1%%

The indoor macro BTS$1%% adoptsthe unifed module design, and thus

allows multiple radio accesstechnologies /+ATs0 in one cabinet6 !tis small in si


15/78

Benefts

E'cient siteusage(

=%%mm:>4%mmCost)E*ective

Solutions +or Caacit"an! Coverage(

The BTS$1%% guaranteeswide co5erage and high

throughput, and helpsminimi


16/78

"+FU /"ouble radio flterunit0

(ne double radio flter unit /"+FU0pro5ides two T+@s6 o o# T+@ percabinet is &'6

The "+FU per#orms modulation

and demodulation betweenbaseband signals and +F signals,processes data, and combines anddi5ides signals6


17/78

2+FU /2S) +adio flterUnit0 (ne 2+FU pro5ides a

ma:imum o# si: T+@s6 o o#T+@ per cabinet is $=6

The 2+FU per#ormsmodulation anddemodulation between

baseband signals and +Fsignals, processes data, andcombines and di5ides signals6


18/78

"+FU and 2+FUco5erage/R0U hen the "+FU is

confgured #or the

BTS$1%%, a BTS$1%%can support a ma:imumo# $= carriers in thema:imum cellconfguration o#

S&'&'&'6

+ural or sub7urban areas

1R0U hen the GRFUis

confgured #or the

BTS$1%%, a BTS$1%%can support ama:imum o# ' carriersin the ma:imum cellconfguration o#

S'>'>'>6

Urban areas


19/78

(utput power o# "+FU

and"T+U2o Combining mo!e

"T+U "+FU

)a: output power is =%/>6dBm0

)a: output power is >4 />=64dBm0

T(C >637& /""PU loss0 34(5 !Bm

T(C is 34(6 !Bm

Combining mo!e"T+U "+FU

)a: output power is $%/>>63dBm0

)a: output power is '% />$dBm0

T(C >>637& /""PU loss0 37(8 !Bm

T(C is 37 !Bm


20/78

(utput power o# 2+FU

9TR. TR. 7TR. 3TR. 6TR. 4TR.=%/>63dB

m0>%/>=6%dBm

0$&/>>61dB

m0'/>>6$dB

m0'%/>$dB

m0&=/>'6%dB

m0

e use 2+FU #or $ or more T+@, there#ore2+FU being used only on combining mode6

= T+@ on 2+FU not recommended due to

co5erage constraint6

Abo5e mentioned are T(C power


21/78

Un!erstan! Combiningan!

2o combining mo!e o+BTS


22/78

/TRU case


23/78

SendTransmit mode

ide band combining

o combining


24/78Page'>

Combining /"T+Ucase0

TRX0TRX0

TX

TRX1TRX1

TX

TX1

IN1

TCOM

IN2

TX2

combinercombiner


25/78

Combining /"T+U

case0

$ db additional power loss

Single #eeder cable #or ' T+@s6

-Decti5e utili


26/78

Page'=

o combining /"T+U case0

TCOM

TRX0TRX0

TX

TRX1TRX1

TX

TX1

IN1

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combinercombiner


27/78

o combining /"T+U

case0

o additional $db loss

Two #eeder cables #or ' T+@s

)ore resource re;uired thancombining i6e6 Antenna, #eeder cable,

""PU etc6


28/78

+ecei5e mode

!ndependent recei5er

"i5iding recei5er

Four di5ersity recei5er


29/78

!ndependent +ecei5er

TRX1TRX1

TRX0TRX0

TX

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

dividerdivider

combinercombiner

dividerdivider


30/78

"i5iding +ecei5er

TRX0TRX0

TX

TRX1TRX1

TX

TX1

IN1

TCOM

IN2

TX2

RXM1

RXD1

RXM2

RXD2

combinercombiner

dividerdivider

dividerdivider


31/78

/R0U case


32/78

Send Transmit mode

Transmit independency orcombination

PBT


33/78

Trasmit independencyor comb


34/78

+ecei5e mode

Two way recei5e di5ersity

Four way recei5e di5ersity6 ote8 (ne T+@ uses, > way recei5e di5ersity


35/78

Two way recei5e


36/78

"uple:er andCombiner"iple:

er


37/78

"uple:er

"uple:er is usedto separate orisolate

transmitted andrecei5ed signalsin a common

#re;uency rangethat uses acommon antenna6


38/78

Combiner"iple:er

A combiner is ade5ice at thebase station that

allowsconnectiono# se5eral

transmitters toone antenna

1%%)H>> >>>


51/78

S7>>>77>>>/"+FU case0

Combiner

Combiner

Antenna

900

1800

Combiner

Combiner

Antenna

1800

900


52/78

Two dual polari


53/78

Confguration

with combiningmode

i h


54/78

S7''' with /"+FUcase0 ot recommended6

(ne antenna port is

ot connected6

$dB coupling loss

Confguration8 Single

#eeder /&T:E'+:0


55/78

S7''' with""PU"T+U

(ne antenna port is notutili


56/78

S7'''7'''/"+FU case0

Single antenna persector6

& "iple:ercombiner persector

$ dB loss

Confguration8 Single#eeder /&T:E&+:0

Combine

Antenna

1800

DRFU900 DRFU

S''' ''' /"T+U


57/78

S'''7''' /"T+Ucase0

' ""PU and ' "T+Uper sector6

& diple:ercombinerper sector

$ dB loss

Confguration8idebandCombining

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1

900 1800

S >>> C bi i


58/78

S7>>> Combining

DDPU

DRU

DDPU

TX B

RXB1

RXA1

RXA2

RXA3

RXA4

RXB2

RXB3

RXB4

TX A

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1

DTRU

TX 1

TCOM

RXM 1

RXM 2

RXD 1

RXD 2

TX 2

IN2

IN 1


59/78

(ne dual polari


60/78

S7>>> combining

"+FU /)'%%% i 0


61/78

"+FU /)'%%% 5iew0

"T+U /)'%%% i 0


62/78

"T+U /)'%%% 5iew0

S7>>>77>>>


63/78

S >>> >>>Combining /"+FU

case0 Antenna

900 1800

Combiner

Combiner

1800900

+ i t


64/78

+e;uirement

(ne dual polari


65/78

Combining with 2+FU

S $$$ (+ >>>


66/78

S7$$$ (+ >>>

& dual port dualpolari


67/78

(n site 5iew

2+FU /)'%%% i 0


68/78

2+FU /)'%%% 5iew0

S >>> >>>


69/78

S7>>>777>>>

& dual polari


70/78

2+FU /)'%%% 5iew0


71/78

2+FU7"+FU

Combination

S >>> '''


72/78

S7>>>'''

& "ual polari


73/78

2+FU7"+FU /)'%%%5iew0

Power )atch


74/78

Power )atch

-o#er @@ 9 log


75/78

C(C*US!(

o Combining


76/78

o Combining

ConDguration

2o o+ !ualban!antenna TR. 2o o+ cabinet Remars

''' $$ ""PU and $ "T+U

$ "+FU &

'''G''' $

= ""PU and = "T+U(+

= "+FU&

4 /ile%ersrequire!

>>> =

= ""PU and = "T+U(+

= "+FU&

>>>G>>> =

&' ""PU and &' "T+U(+

&' "+FU '

9 /ile%ersrequire!

Combining


77/78

CombiningConDguration

2o o+ !ualban! antenna TR. 2o o+ cabinet Remars

''' $

$ ""PU and $

"T+U$ "+FU & Same as no comb

'''G''' $

= ""PU /$G1%%and $G&3%%0 and= "T+U /$G1%%and $G&3%%0

&R

= "+FU &

7 /ile%ers

require!

>>> $

$ ""PU and ="T+U&R

= "+FU $ 2+FU &

>>>G>>> $

= ""PU /$G1%%and $G&3%%and

&' "T+U /=G1%%and =G&3%%0

&R&' "+FU = 2+FU

'

4 /ile%ersrequire!


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Combining & No Combining