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7/25/2019 Combining & No Combining
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Huawei BTS,Confguration andcoupling
system
Ubaid Fawad
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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
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Huawei BTS
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)acro BTS used inU#one
BTS $%&' /indoor0, $%&'A- /outdoor0
)ain cards /""PU and "T+U0
BTS $1%% /indoor0, $1%%A /outdoor0
)ain cards /"+FU and 2+FU0
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$%&' BTS cabinet
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$%&'A- BTS cabinet
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Function and #eatures
Support2S)3%%) 34%) 1%%) &3%%) and&1%%)
Support 2P+S and -"2-
Support dynamic and static power control
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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
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"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
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""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
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$1%% and $1%%A
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BTS $1%% components
BBU
"+FU2+FU
"C"U
Fan unit
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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
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Benefts
E'cient siteusage(
=%%mm:>4%mmCost)E*ective
Solutions +or Caacit"an! Coverage(
The BTS$1%% guaranteeswide co5erage and high
throughput, and helpsminimi
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"+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
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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
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"+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
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(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
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(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
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Un!erstan! Combiningan!
2o combining mo!e o+BTS
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/TRU case
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SendTransmit mode
ide band combining
o combining
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Combining /"T+Ucase0
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
TCOM
IN2
TX2
combinercombiner
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Combining /"T+U
case0
$ db additional power loss
Single #eeder cable #or ' T+@s6
-Decti5e utili
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Page'=
o combining /"T+U case0
TCOM
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner
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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
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+ecei5e mode
!ndependent recei5er
"i5iding recei5er
Four di5ersity recei5er
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!ndependent +ecei5er
TRX1TRX1
TRX0TRX0
TX
TX
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
dividerdivider
combinercombiner
dividerdivider
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"i5iding +ecei5er
TRX0TRX0
TX
TRX1TRX1
TX
TX1
IN1
TCOM
IN2
TX2
RXM1
RXD1
RXM2
RXD2
combinercombiner
dividerdivider
dividerdivider
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/R0U case
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Send Transmit mode
Transmit independency orcombination
PBT
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Trasmit independencyor comb
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+ecei5e mode
Two way recei5e di5ersity
Four way recei5e di5ersity6 ote8 (ne T+@ uses, > way recei5e di5ersity
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Two way recei5e
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"uple:er andCombiner"iple:
er
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"uple:er
"uple:er is usedto separate orisolate
transmitted andrecei5ed signalsin a common
#re;uency rangethat uses acommon antenna6
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Combiner"iple:er
A combiner is ade5ice at thebase station that
allowsconnectiono# se5eral
transmitters toone antenna
1%%)H>> >>>
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S7>>>77>>>/"+FU case0
Combiner
Combiner
Antenna
900
1800
Combiner
Combiner
Antenna
1800
900
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Two dual polari
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Confguration
with combiningmode
i h
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S7''' with /"+FUcase0 ot recommended6
(ne antenna port is
ot connected6
$dB coupling loss
Confguration8 Single
#eeder /&T:E'+:0
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S7''' with""PU"T+U
(ne antenna port is notutili
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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
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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
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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
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(ne dual polari
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S7>>> combining
"+FU /)'%%% i 0
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"+FU /)'%%% 5iew0
"T+U /)'%%% i 0
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"T+U /)'%%% 5iew0
S7>>>77>>>
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S >>> >>>Combining /"+FU
case0 Antenna
900 1800
Combiner
Combiner
1800900
+ i t
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+e;uirement
(ne dual polari
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Combining with 2+FU
S $$$ (+ >>>
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S7$$$ (+ >>>
& dual port dualpolari
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(n site 5iew
2+FU /)'%%% i 0
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2+FU /)'%%% 5iew0
S >>> >>>
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S7>>>777>>>
& dual polari
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2+FU /)'%%% 5iew0
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2+FU7"+FU
Combination
S >>> '''
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S7>>>'''
& "ual polari
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2+FU7"+FU /)'%%%5iew0
Power )atch
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Power )atch
-o#er @@ 9 log
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C(C*US!(
o Combining
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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
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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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The -nd