Course Content
Module O)*ectives
At the end of the module you will e ale to!
" #es$rie the %ur%ose of RR&
" List the RR& fun$tional entities
" #es$rie the %ur%ose of ea$h of the RR& fun$tional
entities
" 'dentify the lo$ation of RR& entities
Radio Resource Management
" he %lanned coverage for ea$h tar/eted ser.i$e
" -i/h capacity i,e, low lo$kin/ )new $alls7 hando.ers*
" he re8uired 9uality of Ser.i$e )9oS*
" :%timi;e the use of a.ailale $a%a$ity )%riorities*
<y $ontinuously monitorin/ad=ustin/ how the a.ailale resour$es
are used in a$$ordan$e with user re8uests
dio Resource Management (RRM) is responsible for opti utilisation
of the air interface resources
RRM
" +redi$t the im%a$t on interferen$e )%ower* of
the admittin/ a new user for L ? #L
" +erform a%%ro%riate a$tions )e,/, new $all
admissions7 itrate in$reasede$rease et$,* in
a$$ordan$e with %re.ailin/ load $onditions
" +ro.ide different 8uality of ser.i$e for real
time )R* and non@real time )NR* users
" ake a%%ro%riate $orre$ti.e a$tion when the
different $ell load thresholds are e$eeded in
order to maintain $ell staility )i,e, load
$ontrol*
Overload
Time
Estimated capacity for NRT tracMeasured load caused by
non-controllable load (RT)
Load Control
" L( %erforms the fun$tion of load $ontrol in asso$iation with A( ?
+S
" %dates load status usin/ measurements ? estimations %ro.ided y A(
? +S
" (ontinuously feeds $ell load information to +S ? A(!
" 'nterferen$e le.els
Radio Resource Management Overview
" +ower (ontrol )+(*
" -ando.er (ontrol )-(*
Admission Control
" Res%onsile for maimisin/ $a%a$ity )throu/h%ut* whilst %ro.idin/
the re8uired 8uality of
ser.i$e for R traffi$,
" (he$ks that admittin/ a new user will not sa$rifi$e %lanned
$o.era/e or 8uality of eistin/
$onne$tions
" #etermines whether RA<s $an e admitted to the RAN
" -andles R RA<s alone y estimatin/ the in$rease in
non@$ontrollale load
" ith +S de$ides whether to allo$ate resour$es to NR RA<s
" 'n the de$ision L interferen$e ? #L %ower measurements y <S
are used
" Sin$e RAS06 also the L throu/h%ut is $onsidered for A(
" +ro.ides RL( %arameters to +S for NR users7 for eam%le
" <earer $lass
" rans%ort Formats
" A( sets /ualit0 and ower arameters for the radio link7
for eam%le
" L#L <LER7 ENo tar/ets7 S'R tar/et
" 'nitial #L transmission %ower
Admission Control #RAS12$3 icture(
" 'n L the re$ei.ed total wideand interferen$e %ower )R+* measured
indi$ates the
traffi$ load of the radio resour$es,
" For #L the %ower $han/e $aused y new R ser.i$e is otained from
the maimum
allowed #L transmission %ower for the ser.i$e,
" 'n the admission de$ision %ro$edure new $all )or modified eistin/
$all* is admitted if
oth L and #L admission de$isions are %assed
Pr45target
Admission Control6 !L
i@fa$tor
P rxLoadMarginMaxDCH
P rxTarget
Radio Resource Management Overview
" +ower (ontrol )+(*
" -ando.er (ontrol )-(*
Resource Manager #RM(
" Res%onsile for mana/in/ the lo/i$al radio resour$es of the RN( in
$o@o%eration with
A( and +S
" :n re8uest for resour$es7 from either A()R* or +S)NR*7 R&
allo$atesB
" #L s%readin/ $ode
" L s$ramlin/ $ode
" Also looks after $ode tree mana/ement )to maintain
ortho/onality*B
" 'nitial $ode sele$tion J $odes $on$entrated to same ran$h
" (ode de@fra/mentation J dynami$ reallo$ation of $odes as users
enterlea.e system
" #L s%readin/ $ode allo$ation for -S#+A users $an e dynami$ in
RAS06
Code Type %plink &o!nlink
HSDPA : general rincile
" Fast s$hedulin/ is done dire$tly in Node@< ased on feeda$k
information from E
and knowled/e of $urrent traffi$ state,
,E
*ata
*ata
New <S fun$tions
,E4
5 5 6 5 7 5 8 5 4 5 5 4 5 4 6 5 4 7 5 -
5
4 6
4 7
T i m e 9 n u m b e r o f T T / s :
. P & ; 4 2 6
Comaring HS!PA to R77 and HSDPA
" -S+A is 3G++ Rel6 KEnhan$ed F## %link
" main $hara$teristi$s!
=eature
Rel>>
%daptive modulation N A N
BT& based schedulin N A A
=ast $4 #%R. N A A
&oft #andover A N A
TT/ lenth 9ms: 850650504
5 450
HSPA" 9mrovements
" 'm%ro.in/ the #L %eak rates7 $ell throu/h%ut ? s%e$trum
effi$ien$y!
" 659A&! Enhan$ed -S#+A &odulation
" &'&:! 'ntelli/ent &ulti@Antenna Systems
" 'm%ro.in/ the $ell throu/h%ut ? s%e$trum effi$ien$y!
" #L Fleile RL(
" (+(! (ontinuous +a$ket (onne$ti.ity
+eak Rates u% to!
21 24 52 &%s