WiMAX BTS3703 Hardware System 20071026 B 1.0
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Security Level: Internal
www.huawei.com
BTS3703 Hardware
System
CDA Team
In Wi!ele"" Netwo!# Gene!al En$inee!%" Office
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HUAWEI TECHNOLOGIES CO., LTD. &a$e 'Huawei Confidential
The 0TS)7/), a !o!ieta!4 !oduct
de5eloed 34 HUAWEI 3a"in$ on the IEEE
6/'.8e !otocol", i" a WiA9 3a"e "tation.
Thi" document de"c!i3e" the ha!dwa!e
"4"tem of the 0TS)7/) :;'//-//
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0TS)7/) &!oduct De"c!ition
:;'//-//=/,+@8
Dule2 mode
TDD :DL and UL "u3*f!ame !atio '(6, )(+<
odulation mode
DL( B&S, 8BA, 8>BA UL( B&S, 8BA
Codin$ mode Con5olutional code, con5olutional Tu3!o code
&owe! Cont!ol UL( oen loo and clo"ed loo
IO at!i2 A :')/ 2 78 2 +7 with !ac#
)+/ 2 '+ 2 >>/ without !ac#
Wei$ht :#$< + ''@+
&owe! :W6 ; :*)6.> ; to *+7 ;< *>6 ; :*)8; to *+7;< DC
Wo!#in$ f!euenc43and":GH? '.) GH?
'.>8 '.8/ '.+ GH?
).> ).8 ).+ GH?
a2imum t!an"mitowe!
The ma2imum t!an"mit owe! of an antenna i"/ W, and acco!din$l4 the ma2imum t!an"mitowe! of a --U i" '/ W.
'.) @'.+ GH?
The ma2imum t!an"mit owe! of an antenna i"+ W, and acco!din$l4 the ma2imum t!an"mitowe! of a --U i" / W.
).+ GH?
Channel 0andwidth + H? @/ H?
a2imumcaacit4@th!ou$hut
+ 3it@" + H?3andwidth
)/ 3it@" / H?3andwidth
Oe!atin$ teme!atu!e: + :with an ai! filte!< @++ :without anai! filte!/ , ma2imum(+/ :"ola! !adiation con"ide!ed< @++ :"ola! !adiationnot con"ide!ed6 ; DC inut into the !eui!ed owe! outut.
I1 module( e!fo!m" di$ital I@B demodulation, di$ital u con5e!"ion, di$ital to analo$ :D@A< con5e!"ion o5e! DL
channel". O5e! UL channel", the I1 module e!fo!m" analo$ to di$ital :A@D< con5e!"ion, di$ital down con5e!"ion, and
di$ital I@B demodulation. -1 module( O5e! DL channel", the -1 module mi2e" analo$ I1 "i$nal" with the !eui!ed wo!#in$ f!euenc4 and
"end" the mi2ed "i$nal" to the antenna afte! owe! amlification. O5e! UL channel", the -1 module e!fo!m" lowe!noi"e amlification and down con5e!"ion fo! the "i$nal" !ecei5ed 34 the antenna and then "end" the analo$ I1
"i$nal" to the I1 module. Dule2e! module( The dule2e! allow" -9 "i$nal" and T9 "i$nal" to "ha!e one antenna channel 34 multile2in$ -9
"i$nal" and T9 "i$nal" o5e! the -1 channel". The dule2e! can al"o filte! the T9 and -9 "i$nal". &A module( The &A module amlifie" the -1 "i$nal" f!om the -1 module. 1an"( Two fan" a!e euied in the --U fo! coolin$. &owe! module( The owe! module con5e!t" >6 ; DC inut into the !eui!ed owe! outut.
--U function module"
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HUAWEI TECHNOLOGIES CO., LTD. &a$e 7Huawei Confidential
S!tware Structure ! the BTS3703
SI+ ,,
S,6 2&T
&e!fo!min$ 6/'.8e*
3a"ed "i$nalin$ cont!ol and
!otocol mana$ement
&e!fo!min$ 6/'.8e*
3a"ed data t!an"mi""ion
cont!ol mana$ement on the
u"e! lane.
&e!fo!min$ de5ice*!elated
lo$ic !e"ou!ce mana$ement
&e!fo!min$ 6/'.8e*3a"ed
!adio !e"ou!ce mana$ement
&e!fo!min$ cont!ol
mana$ement fo! the GW*
0S inte!face :the -8
inte!face amlifie! ci!cuit
,: Sul4in$ owe!"
S&- : &!otectin$ the --U
a$ain"t li$htnin$
(F) :Ai! filte!
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HUAWEI TECHNOLOGIES CO., LTD. &a$e '7Huawei Confidential
Chapter " Hardware Structure and
#r$in% &rinciples ! the BTS3703
"41 Intrductin t the BTS3703
"4" BB)"43 ,,)
"4. BTS3703 Clc$ System
"4/ (ntenna System
"45 &wer Supply System
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Clc$ Synchrniatin des ! the BTS3703
The 0TS)7/) "uo!t"
G&S cloc#.
04 u"in$ the 3uilt*in
G&S ca!d, the00U)7/) o3tain" G&S
"4nch!oni?ation "i$nal"
and thu" en"u!e" cloc#
"4nch!oni?ation on the
enti!e netwo!#.
'
The 00U)7/) ta#e" the
G&S &&S cloc#
"i$nal" a" the
"4nch!oni?ation!efe!ence "i$nal".
)
When the
communication with the
G&S "4"tem i"
inte!!uted, the cloc#"4"tem of the 0TS)7/)
chan$e" to f!ee*!un
mode, which !o5ide" a
"tand34 time of u to 6
hou!".
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HUAWEI TECHNOLOGIES CO., LTD. &a$e 'Huawei Confidential
Chapter " Hardware Structure and
#r$in% &rinciples ! the BTS3703
"41 Intrductin t the BTS3703
"4" BB)
"43 ,,)
"4. Clc$ System
"4/ (ntenna System
"45 &wer Supply System
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HUAWEI TECHNOLOGIES CO., LTD. &a$e )/Huawei Confidential
(ntenna System
,,)
Feeder
(ntennaThe radi antenna system receives and transmits
radi si%nals4
The +&S antenna system receives +&S si%nals r
+L2'(SS si%nals4
0a"ed on ho!i?ontal !adiation atte!n", antenna"
a!e cla""ified into two t4e"( di!ectional antenna
and omnidi!ectional antenna. Fou can choo"e one
t4e o! cu"tomi?e them 3a"ed on the actual
"ituation".
The 00U and G&S a!e in"talled with the "u!$e
!otecto!. If the 00U i" laced in the A&,
!e"e!5e enou$h "ace fo! in"tallin$ the "u!$e
!otecto! and !outin$ ca3le".
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Page 31HUAWEI TECHNOLOGIES CO., LTD. All rights
Sur%e &rtectr
1unction"( &!otectin$ the de5ice" a$ain"t the li$htnin$ cu!!ent of
the conducto! in the feede! ca3le
The "atellite antenna" and de5ice" mu"t 3e in"talled with "u!$e
!otecto!".
The &!otect connecto! of the "u!$e !otecto!
fo! the G&S "hould face the G&S.The &!otect connecto! of the "u!$e !otecto!
fo! the euiment "hould face the 3a"e "tation.The feede! "hould 3e connected to the Su!$e
connecto! fo! the "u!$e !otecto! and the
wate!!oof mea"u!e mu"t 3e !o5ided.
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HUAWEI TECHNOLOGIES CO., LTD. Page 32Huawei Confidential
Chapter " Hardware Structure and
#r$in% &rinciples ! the BTS3703
"41 Intrductin t the BTS3703
"4" BB)"43 ,,)
"4. Clc$ System
"4/ (ntenna System
"45 &wer Supply System
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Page 33HUAWEI TECHNOLOGIES CO., LTD. All rights
BL)S&D BL)&W-
BL)T-U
BL)&AU
BL)SU
Fan
A&
o!
DC 0O9
00U
owe!
3oa!d
>6 ;
DC
).) ;
+
;
>6 ;
DC
6 ;
'6 ;
'6 ;
Su!$e
!otecto!
&owe!
3oa!d
T1
!oce""in$
3oa!d
&ow
e!
amlifie!
ain
"e!5ice
!oce""in$
3oa!d
6 ;
&wer Supply System
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HUAWEI TECHNOLOGIES CO., LTD. &a$e )>Huawei Confidential
(&
The A& !o5ide" the followin$ function"( -ated inut 5olta$e( ''/ ; AC@/ ; AC -an$e of inut 5olta$e( / ; AC to '/
;ac a2imum inut cu!!ent( '+ A :u"e!
"oc#et not con"ide!ed< &!o5idin$ a DC owe! "ul4 u to *>6;
DC 8/A &!o5idin$ > U "ace fo! the de5ice" &!o5idin$ 3uilt*in 3atte!ie" and ''/ ; AC
li$htnin$ !otection module"
The A& i" u"ed fo! outdoo! alication.
A&'//
A&//
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HUAWEI TECHNOLOGIES CO., LTD. Page 3H!a"ei C#$%ide$tial
-C B;The DC 0o2 i" an indoo! li$htnin$ !otection 3o2 fo! DC owe!. It can 3e
in"talled in the *inch ca3inet o! on the wall. All ca3le" mu"t !un alon$
the f!ont anel.Inut@outut 5olta$e( *>6 ; DC-an$e of inut@outut 5olta$e( *)6.> ; DC to *7' ; DCThe DC 0o2 can feed one )' A owe! inut and "i2 owe! di"t!i3ution
outut. The ma2imum outut cu!!ent of each channel i" / A. Li$htnin$
!otection and owe! di"t!i3ution
The DC 0o2 !eo!t" !emote fault ala!m" and the ala!m indicato!!o5ide" local ala!m indication.
SW SW' SW)
SW8SW+SW>
S&D
NEG:* 'etwr$in%
Ulin#Ulin# Downlin#Downlin#
F1F1
1122
33
1122
3311
22 33
All the 0TS)7/)" "ha!e a f!euenc4. Each of the th!ee "ecto!" in a 0TS)7/) u"e" one*
thi!d of the "u3*channel". The "ecto!" facin$ to the "ame di!ection in diffe!ent
0TS)7/)" u"e the "ame "u3*channel". To en"u!e that the "u3*channel" of the
nei$h3o!in$ "ecto!" in a 0TS)7/) a!e uniue, all the "ecto!" u"e the "ame &e!m0a"e.
(lo$ical "u3*channel /*/
'(lo$ical "u3*channel *''
)(lo$ical "u3*channel ')*)>
F1F1
1122
33
1122
3311
2233
Se$ment /("u3*channel /*
Se$ment ("u3*channel /*
Se$ment '("u3*channel '/*'
Alied fo! the initial ha"e ofAlied fo! the initial ha"e of
netwo!# de5elomentnetwo!# de5eloment
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&)SC =1?3?3> 'etwr$in%
&)SC &)SC with all SC 1 ; 3 ; 3 @ F)SC 1 ; 3 ; 3
The!e a!e th!ee f!euencie". Each of the th!ee "ecto!" in a 0TS)7/) u"e" one f!euenc4.
F1F1
F3F3
F2F2F1F1
F3F3
F2F2
F1F1
F3F3F2F2
(dvanta%es(dvanta%es::
The "ect!um u"a$e i" "imila! to the 2 ) "u3*ca!!ie!!eu"e mode in a "in$le f!euenc4. The "oft hando5e! cannot 3e
imlemented.
-isadvanta%es:
All "ecto!" u"e &USC with all SC.In one 0TS)7/), th!ee "ecto!" u"e the "ame UL=&e!m0a"e, 3ut, diffe!ent
0TS)7/)" a!e a""i$ned diffe!ent UL=&e!m0a"e" to minimi?e inte!fe!ence.
The di"t!i3uted f!euenc4 !e"ou!ce" can 3e full4 u"ed.The netwo!#in$ toolo$4 doe" not !eui!e comle2 "u3*ca!!ie!
mode and i" ea"4 to !eali?e.The "4"tem ha" low o5e!head and i" affected 34 wea#
inte!fe!ence.The netwo!# co5e!a$e i" wide, the co"t in the initial ha"e of
netwo!# de5eloment i" low, and the !i"# of netwo!# de5eloment i"
low. The netwo!# i" ea"4 to 3uild, inte!fe!ence i" ea"4 to cont!ol, and
netwo!# lannin$ and otimi?ation i" ea"4 to imlement.
Alied fo! la!$e*"caleAlied fo! la!$e*"cale
netwo!# de5elomentnetwo!# de5eloment
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FF, =1?1?3> 'etwr$in%All the 0TS)7/)" "ha!e a f!euenc4. To en"u!e the effect of
co5e!a$e, u"e the &USC mode on the ed$e of the cell. To im!o5e
the "ect!um u"a$e, u"e the &USC with all SC mode.
The cell" located fa! awa4 f!om the 0TS)7/) u"e the &USC mode.
In one 0TS)7/), each of the th!ee "ecto!" u"e" one*thi!d of the "u3*
channel" that ha" the "ame f!euenc4.
The cente! a!t of the cell u"e" the &USC with all SC mode, and
nei$h3o!in$ "ecto!" u"e diffe!ent &e!m0a"e" to 3alance
inte!fe!ence.
Select the"e two mode" acco!din$ to the C@I. The f!euenc4 !eu"e
facto! i" .
Di"ad5anta$e"(
Thi" netwo!#in$ toolo$4 !eui!e" comle2 "u3*ca!!ie! mode and "u3*channel mode.The "u3*channel mode dete!mine" the "t!en$th of inte!fe!ence. If the!e i" int!a*f!euenc4 inte!fe!ence
3etween nei$h3o!in$ "ecto!" in a 0TS)7/), the load of thi" 0TS)7/) i" hea54.
The !o3a3ilit4 of channel colli"ion dete!mine" the "t!en$th of int!a*f!euenc4 inte!fe!ence.
&!efe!!ed netwo!# toolo$4&!efe!!ed netwo!# toolo$4
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Typical Cn!i%uratins ! the BTS3703
m2n(num3e! of "ecto!" 2 num3e! of f!euencie"
The 0TS)7/) "uo!t" omni*di!ectional, '*"ecto!, and )*"ecto! confi$u!ation".
It al"o "uo!t" "mooth caacit4 e2an"ion f!om 2 to ) 2 >.
Cn!i%uratin 'umer !BB)3703s
'umer ! ,,)3701C=' T9 -iversity>
1 ; 1 1 1
" ; 1 1 "
3 ; 1 1 3
3 ; " " 5
3 ; 3 3 A
3 ; . . 1"
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