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Prashant Mathur Node B 3G RBS (Outdoor) Overview 2009-12-31
3G node-b RBS(Outdoor)
Overview
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Prashant Mathur Node B 3G RBS (Outdoor) Overview 2009-12-31
RBS 3201RBS 3201
!he RBS !he RBS 32013201 is an outdoor "a#rois an outdoor "a#ro
#abinet and a "e"ber o$ the RBS#abinet and a "e"ber o$ the RBS
30003000 $a"i%&'$a"i%&'
t has u to three se#tors and u tot has u to three se#tors and u to
two #arriers er se#tortwo #arriers er se#tor''
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RBS 3201
Cabinet View
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Prashant Mathur Node B 3G RBS (Outdoor) Overview 2009-12-31
The RBS 3201 Macro outdoor comprises the following hardware:
A :Climate Unit C!U"
B:#$ternal %larm Module &%!M" optional"C:Base'and BB" su'rac( and fan unit
The BB su'rac( t)picall) consists of the following
components:
Base'and *nterface BB*+" 'oard
#$change Terminal #T" 'oard
,eneral -urpose -rocessor Board ,-B"
Random %ccess Recei.er R%&" 'oard
Switch Core Board SCB"
Timing Unit Board TUB"
Transmitter T&" 'oard
D:-ower Su'rac( includes -SU and -CU" and fan unit
E:Smo(e /etector optional"
F:*nternal /istri'ution ModuleBatter) +use Unit */MB+U"G:Radio +reuenc) R+" su'rac( and fan unit
The R+ su'rac( t)picall) consists of the following components:
%ntenna *nterface Unit %*U"
Radio +reuenc) *nterface R+*+" 'oard
Switch Core Board SCB"
Transcei.er TR&" 'oard
/umm) Boar
H:%C Connection Unit %CCU" /istri'ution Unit with Ser.ice utlet"
J: Space for optional site transmission euipment
K:C+3 optional"
L:/istri'ution +rame /+" M:-ower Connection Unit
N:%u$iliar) /istri'ution Module %/M" optional"
P:R+ Connection Bo$
Q:Batteries optional"
R:Multicarrier -ower %mplifier MC-%" Su'rac( and fan unit
The MC-% su'rac( t)picall) consists of the following components:
MC-%
MC-% hu'
/umm) MC-%
S:oise hood optional"
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Prashant Mathur Node B 3G RBS (Outdoor) Overview 2009-12-31
Standad Hadwae !nit"
A# C!
The Climate Unit C!U" can either 'e a Com'ined C!U or a 4eat #$changer
4#" C!U5 depending on the operation temperature6
B# $ALM
The #$ternal %larm Module &%!M" handles the customer specific alarms as
well as predefined alarms for #ricsson euipment
C# Ba"eband S%ba&'
Base'and BB" Su'rac( functionalit) handles dedicated and common channels toUser #uipment U#"6
The BB su'rac( comprises an interface for connection to a Radio etwor( Controller
RC"5 a Main -rocessor M-" cluster and the e$ternal %s)nchronous Transfer Mode
%TM" interface termination as well as all functionalit) in the 'ase'and domain
e$cept for a.erage output power limiter5 power clipping5 dela) and gain ad7ustment
which are all located in the R+ su'rac("6
()e Ba"eband *nte+a&e b,ad
The Base'and *nterface BB*+" 'oard connects the BB su'rac( to the R+
su'rac(6 The connection carries the downlin( and uplin( traffic streams
as well as timing signals6
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Prashant Mathur Node B 3G RBS (Outdoor) Overview 2009-12-31
E( b,ad
The #$change Terminal #T" 'oard ser.es as an interface 'etween the transmission
ca'les and the %TM switch on an Switch Core Board SCB"6 The #T 'oard pro.ides
the connections for the *u' *nterface 'etween RBS and RC" and remote Mu'
management interface" interfaces 6The t)pe of #T 'oard depends on the transmission standard 8
um'er of units: 0 9 2 #T9M1"5 0 9 1 #T9M"5 0 9 1#T9MC1s"5 0 9 2 #T9MC1"5
0 9 2 #T9M3"5 0 9 1 #T9-S;"6
GPB
The ,eneral -urpose -rocessor Board ,-B" operates as an M-5 it contains and
e$ecutes the main part of the RBS software6 The ,-B controls de.ices on 'oardsand in au$iliar) units6 *t has flash memor)5 an #thernet connection and an RS232
interface6
The ,-B can 'e duplicated to pro.ide redundanc)6 Upon failure in the acti.e M-5
the other ,-B starts and ta(es o.er as M-6
RA$ b,ad
The Random %ccess and Recei.er R%&" 'oard comprises the BB R& part5 mainl)ta(ing care of the following:
Cell com'ination for softer hand o.er 5
/ecoding 5
/edicated and random access transport channels
Searching
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R%& 'oards within a BB su'rac( share the load to achie.e high a.aila'ilit)6 *f one
R%& 'oard fails5 the load is di.ided o.er the remaining R%& 'oards6 This
ensures the RBS continues to handle traffic5 although with reduced capacit)6
um'er of units: 1 8 <
SCBThe Switch Core Board SCB" contains an %TM switch and is connected to the
%TM switch ports located on other 'oards5 through the 'ac(plane6 %n SCB can
also 'e connected with up to four other SCBs located in other su'rac(s5 and to the
R+ su'rac( for %TM switching parts6
The s)stem power is distri'uted to the su'rac( 'ac(plane through the SCB6 The
SCB contains a power filter function for s)stem power6 The SCB also super.ises5 controls and pro.ides power to the su'rac( fans6
The SCB can 'e duplicated to pro.ide redundanc)6 *f one SCB stops wor(ing5 the
other ta(es o.er the traffic6 The first slot and the last slot in the BB and R+ su'rac(
are reser.ed for SCBs normall)"6
um'er of units: 2 or
(!BThe Timing Unit Board TUB" generates and distri'utes a reference signal for
local timing generation6 The freuenc) accurac) is gi.en ') an e$ternal
reference signal5 either pro.ided on a transmission interface or a local
e$ternal source5 for e$ample ,-S6 The TUB can 'e duplicated to
pro.ide redundanc)6
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($ b,ad
The Transmitter T&" 'oard are a.aila'le with different C# and 4S capacities6
The RBS ma) 'e configured to pro.ide 4igh9Speed /ownlin( -ac(et %ccess
4S/-%"5 using 4S/-% capa'le T& 'oards6
The T& 'oard comprises the BB T& part5 ta(ing care of the following:Cell splitting
Channel com'ining
#ncoding
4andling transport channels
Modulation and spreading
um'er of units: 1 8 2
D# P,we S%ba&'
The -ower Control Unit -CU" and -ower Suppl) Units -SUs" are located in
the power su'rac( 6
PC!The -CU connects and translates signals from the -SUs5 the */MB+U5 the %CCU
5 and the C!U5 and transfers them to the M- ,-B" for control and super.ision6
The -CU also super.ises5 controls5 and pro.ides power to the power su'rac( fan
um'er of units: 1
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PS!
The -SU con.erts and rectifies the incoming power from the %CCU to 9= > /C
s)stem .oltage6 The -SU distri'utes the con.erted power to the */MB+U for
distri'ution to other su'rac(s6
um'er of units: 3 8 ?
E# S-,'e dete&t,
The smo(e detector generates an alarm if smo(e is detected or the temperature
is a'o.e @3AC inside the RBS6 %n &%!M is reuired for this function
F# *DM.BF!
The *nternal /istri'ution ModuleBatter) +use Unit */MB+U" handles the internal
/C distri'ution and is the connection point 'etween the power distri'utors
-SUs and 'atteries" and power consuming units6 The */MB+U is euipped with
a main distri'ution 'ranch with fuses and a contactor for connection to the 'atteries6
um'er of units: 1
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G# RF "%ba&'
The Radio +reuenc) R+" Su'rac( contains most of the R+ processing
hardware6 *t does not contain the power amplifiers and optional %ntenna S)stem
Control %SC"6The R+ su'rac( ta(es care of the following:
/% and %/ con.ersion
R+ modulation and demodulation
R+ carrier com'ining and splitting
!ow noise amplification for reception
The following sections gi.e a 'rief description of the 'oards in the R+ su'rac(6
A*!
The %ntenna *nterface %*U" Unit consists of a filter and control unit5 as well as a
com'iner and splitter unit6
The filter and control unit provides the following:
/uple$ filtering of the T& and R& signal
+le$i'le freuenc) and signal splitting!ow9noise amplification of the R& signal
-ower measurement of T& signal
The combiner and splitter unit performs the following:
+reuenc) com'ination in the downlin(5
Signal splitting and high power com'ination when two MC-% modules
are used
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RF*F B,ad
The Radio +reuenc) *nterface R+*+" 'oard connects the R+ su'rac( to the BB
su'rac( and to the MC-% hu'6 The connection carries the downlin( and uplin( traffic5
as well as timing signals6 The R+*+ 'oard also implements power clipping for
downlin( traffic6
(R$ b,ad
The Transcei.er TR&" 'oard pro.ides the following:
%/ and /% con.ersion
Channel filtering
/ela) and gain ad7ustment
R+ modulation and demodulation % TR& 'oard comprises two independent transcei.ers for two T& and R& signal pairs6
um'er of units: 1 8 @
H# ACC! Di"tib%ti,n !nit /wit) "ei&e ,%tet
The %CCU consists of two parts: the connection unit at the 'ottom center
of the ca'inet and the distri'ution unit in the left part of the ca'inet6The %C Connection Unit %CCU" recei.es the incoming power and distri'utes it5
through circuit 'rea(ers located in the %CCU5 to the -SUs5 climate
s)stem5 lamp5 smo(e detector and ser.ice outlet6
The %CCU also contains the cold start function5 which is used
when the RBS is started in temperatures 'elow ? AC6
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The %CCU then onl) supplies the Climate Control Unit CCU" with power5 and the
heater is turned on6 ;hen the temperature sensor senses that the internal
temperature in the %CCU reaches ? AC5 the rest of the RBS is supplied with power6
The %CCU pro.ides a Surge -rotecti.e /e.ice S-/" against power line
distur'ances affecting the incoming power6
K# CF3
The C+3 is used for the following:
The installation of the /C filter for BBU <?00
%s an interface for optional site transmission euipment
STM91#T9M ca'le gland
L# DF
The /istri'ution +rame /+" contains o.er.oltage protection and connection
fields for transmission6 The /+ is also a connection field for e$ternal alarms #%CU"
that can 'e connected to5 and controlled ')5 the &%!M
M# PC!
The -ower Connection Unit contains the -ower Connection *nterface6
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N# ADM
The %u$iliar) /istri'ution Module %/M" distri'utes the /C power ta(en
from the */MB+U to the /C users in the optional site transmission euipment
P# RF C,nne&ti,n B,4The R+ Connection Bo$ is the connection interface for 7umper ca'les
and the earth grounding ca'le
Q# Batteie"
The RBS has an internal 'atter) 'ac(up time of 30 minutes of operation 6
when 31 configuration5 20 ; MC-%5 200 ; transmission"6The four 12 > 'atteries pro.ides 9= > /C6
R# MCPA
The Multicarrier -ower %mplifier MC-%" Su'rac( contains the linear power
amplifiers for the R+ carriers6
The su'rac( contains positions for up to si$ MC-% modules and is connected to theR+ su'rac( through front panel ca'ling
There are two .ersions of MC-%5 the 20 ; and the 30 ; R+ power amplifier6
#ach power amplifier can simultaneousl) amplif) up to four R+ carriers5
') di.iding the power 'etween the carriers6
um'er of units: 1 9 @
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MCPA H!B
The MC-% 4u' is the connection interface 'etween the MC-% and the R+*+ 'oard6
um'er of units: 1
S# N,i"e H,,d
The oise 4ood is a soundproofing hood co.er"6
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ACRONYMSACRONYMS
33GPP 3rd Generation Partnershi Pro*e#tGPP 3rd Generation Partnershi Pro*e#t+,+, +ntenna nter$a#e ,nit +ntenna nter$a#e ,nit
+S+S +ntenna S&ste" ontro%%er +ntenna S&ste" ontro%%er
+!M+!M +s&n#hronous !rans$er Mode +s&n#hronous !rans$er Mode
BB.BB. Baseband nter$a#eBaseband nter$a#e
B/RB/R Bit /rror RateBit /rror RateBPBP Board Pro#essorBoard Pro#essor
B!SB!S Base !rans#eiver Station Base !rans#eiver Station
BN o""on Bondin NetworBN o""on Bondin Networ
ORB+ o""on Ob*e#t Reuest BroerORB+ o""on Ob*e#t Reuest Broer+r#hite#ture+r#hite#ture
S,S, o"biner and S%itter ,nito"biner and S%itter ,nit
,, aa#itor ,nitaa#itor ,nit
arriernter$eren#earriernter$eren#e
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dBdB e#ibe% e#ibe%
dB"dB" e#ibe% re%ative toe#ibe% re%ative to 11 "4"4
!M+!M+ ua% u%e5 !M+ua% u%e5 !M+
66 own-6in own-6in
P7 u%e5P7 u%e5
/1/1 !rans"ission inter$a#e /1 !rans"ission inter$a#e /1
/3/3 !rans"ission inter$a#e /3 !rans"ission inter$a#e /3
/+, /5terna% +%ar" onne#tion ,nit/+, /5terna% +%ar" onne#tion ,nit/M/M /%e#tro"aneti# o"atibi%it& /%e#tro"aneti# o"atibi%it&
/!/! /5#hane !er"ina% /5#hane !er"ina%
.. .reuen#& ivision u%e5 .reuen#& ivision u%e5
8!!P8!!P 8&er !e5t !rans$er Proto#o% 8&er !e5t !rans$er Proto#o%8484 8ardware 8ardware
MM nterna% istribution Modu%e nterna% istribution Modu%e
P nternet Proto#o%P nternet Proto#o%
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MP+ Mu%ti arrier Power +"%ierMP+ Mu%ti arrier Power +"%ier
Mt'Mt' Manae"ent Manae"entMM Man Ma#hine nter$a#eMM Man Ma#hine nter$a#e
MP Main Pro#essor %usterMP Main Pro#essor %uster
M!B. Mean !i"e Between .ai%uresM!B. Mean !i"e Between .ai%ures
NMSNMS Networ Manae"ent S&ste"s Networ Manae"ent S&ste"s
O:M Oeration and Maintenan#eO:M Oeration and Maintenan#eOMOM Oeration and Maintenan#e Oeration and Maintenan#e
entreentre
PS, Power Su%& ,nitPS, Power Su%& ,nit
P,P, Power ontro% ,nit Power ontro% ,nitR+NR+N Radio +##ess Networ Radio +##ess Networ
R+NOS Radio +##ess Networ Oeration SuortR+NOS Radio +##ess Networ Oeration Suort
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