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Handover Control
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7/17/2019 RN31677EN30GLA1 RANPAR Combined HandoverControl v1.0 RU40
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1 © Nokia Siemens Networks RN31677EN30GLA1
Course Content
Radio Resource Management Overview
Parameter Configuration
Common Channels & Power Control
Load Control
Admission Control
Packet SchedulingHandover Control
Resource Manager
HSDPA RRM & arameters
HS!PA RRM & arametersHSPA" features & arameters
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Handover Control#
Course O$%ectives
At the end of the learning entit o! will "e a"le to#
• $es%ri"e & list the ste's of the hando(er 'ro%ed!re for ea%h hando(er t'e in
detail
• Name and des%ri"e the 'ro%ed!res for !'date of meas!rement %riteria and
neigh"or list %om"ination
• $es%ri"e all )* feat!res and their 'arameters
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Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% & ,nter-Sstem )ando(er
• GS ,S)
•
Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
Note#
lind ,.-) RAN 224 & !lti-and Load alan%ing L RAN 21724
are dis%!ssed in LE 8)S9A: feat!res & 'arameters;
Moved from HSPA " chate
r according to enedikt's comment
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Handover ()es
• *ntra+,re-uenc) Handovers• Softer Handover
• )ando(er "etween se%tors of the same Node handled " +S4
• No e5tra transmissions a%ross ,!" interfa%e• a5im!m Ratio *om"ining R*4 is o%%!rring in "oth the =L & $L
• Soft Handover
• =E sim!ltaneo!sl %onne%ted to m!lti'le %ells from different Node s or the same Node "!t different
L*Gs4
• E5tra transmission a%ross ,!"> more %hannel %ards "ase"and 'ro%essing !nits are needed %om'ared
to non-S)4
• o"ile E(al!ated )ando(er M.HO4
• $L?=E# R* & =L?RN*# .rame sele%tion %om"ining
• Hard Handover
• Arises when inter-RN* S) is not 'ossi"le ,!r not s!''orted or ,!r %ongestion4
• $e%ision 'ro%ed!re is the same as S) E) and RN* %ontrolled4
• *a!ses tem'orar dis%onne%tion of the R+4 !ser
• *nter+,re-uenc) Handover •
*an "e intra-S> intra-RN*> inter-RN*• Network E(al!ated )ando(er /.HO4
• $e%ision algorithm lo%ated in RN*
• *nter+RA( Handover • )ando(ers "etween @*$A and GS /.HO4> @*$A and L+E or GAN @LAN4
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Soft Handover
• ain method is soft0softer Handover • S %onne%ted to two or more %ells
• =' to 3 "ran%hes %an "e !sed MaxActiveSetSize 'arameter4
• Seamless )ando(er witho!t an dis%onne%tion of =E-RAN %onne%tion
• softer )ando(er 'ro"a"ilit a"o!t -1 B # soft )ando(er 'ro"a"ilit a"o!t 20-0 B
• Same 'ower le(els in !se for all soft )ando(er "ran%hes• 'tim!m 'ower le(els for link /!alit and %ell %a'a%it
• a%ro $i(ersit *om"ining $*4 gain to red!%e 'ower le(els
• Mo$ile .valuated Handover 1M.HO2• Ena"les different %ell siCes d!e to *ommon 9ilot *hannel E%?No meas!rement
• 'tim!m fast %lose loo' 'ower %ontrol in !se
• !ter loo' 9* after $* %ontrols the LER a%%ording to set target & th!s maintains the /!alit
@*$A .1 @*$A .1 @*$A .1
Ma3Active
SetSi4e#
.*SD 23D 5
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Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er • Parameter Maing• S) E(ents and eas!rements• )ard )ando(er & RR* *onne%tion Release
• ,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
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HC Parameter Data$ase Structure
• R/C F RN* le(el 'arameters
• 6(S F Node le(el 'arameters
• 6C.L F *ell le(el 'arameters
• ,MC3 F .re/!en% eas!rement *ontrol 'arameters SFintra-fre/!en% setD ,Finter-fre/!en%D GFinter-RA+4
• AD73 F Ada%ent *ell 'arameters S F ,ntra-fre/!en% setD , F ,nter-fre/!en%D G?L F ,nter-RA+GS?L+E4D $ F $ete%ted Set4
• HOP3 F )ando(er 9ath 'arameters for ,ntra-fre/!en% )) & *ell Resele%tion
• R/,C F Radio Network .eat!re *ontrol Ena"ling 'arameters for all feat!res4
• R/MO* F Radio Network o"ilit
S#,ntra-.re/!en%
S#,ntra-.re/!en%
,#,nter-.re/!en%
,#,nter-.re/!en%
G#,nter-Sstem
G#,nter-Sstem
6C.L
AD780L
AD7*
AD7S
6(S
R/C
,MCS
,MC*
,MC8
200
200
200
HOPS 200
HOP* 200
HOP8 200
32
<
6?32
AD7D32
• )ando(er are %ontrolled mainl " < gro!'s of 'arameters#• A$H5 Ada%en% definition> s'e%ifi% offset> )95 set sele%tion
• .*5 )ando(er related meas!rement re'ort triggering & de%ision
•
)95 ,ntra-fre/!en% hard hando(er> %ell re-sele%tion• @*EL .*5 set sele%tion> *ell re-sele%tion hsteresis
RN.*
RN,
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AD7S9 HOPS & ,MCS
) 9arameter *ategories
,ntra-.re/!en%
,nter-.re/!en%
,nter-Sstem
Handover Control Parameters
RN* 'arameters
@*EL 'arameters
)9S 'arameters.*S 'arameters
A$HS 'arameters
)9, 'arameters
.*, 'arameters
A$H, 'aram eters
)9G 'arameters
.*G 'arameters
A$HG 'aram eters
:;;HOPS arameters
*ell Re-sele%tion )*S 9riorit
*ell Re-sele%tion )*S +hreshold
*ell Re-sele%tion inim!m I!alit
*ell Re-sele%tion inim!m RJ Le(el
*ell Re-sele%tion 9enalt +ime
*ell Re-s ele%tion I!alit ffset 1
*ell Re-s ele%tion I!alit ffset 2
*ell Re-sele%tion +em'orar ffset 1*ell Re-sele%tion +em'orar ffset 2
*9,*) E%?No A(eraging @indow
Ena"le ,nter-RN* Soft )ando(er
Ena"le RR* *onne%tion Release
)) argin for A(erage E%?No
)) argin for 9eak E%?No
Release argin for A(erage E%?No
Release argin for 9eak E%?No
$efine +arget*ell Sele%tion
::;;
,MCS arameters
A%ti(e Set @eighting *oeffi%ient
Addition Re'orting ,nter(al
Addition +ime
Addition @indow
*9,*) E%?No .ilter *oeffi%ient
*9,*) E%?No )) *an%ellation
*9,*) E%?No )) *an%ellation +ime
*9,*) E%?No )) +hreshold*9,*) E%?No )) +ime )steresis
*9,*) RS*9 )) *an%ellation
*9,*) RS*9 )) *an%ellation +ime
*9,*) RS*9 )) .ilter *oeffi%ient
*9,*) RS*9 )) +hreshold
*9,*) RS*9 )) +ime )steresis
$ro' +ime
$ro' @indow
a5im!m A%ti(e Set SiCe
Re'la%ement Re'orting ,nter(al
Re'la%ement +imeRe'la%ement @indow
$efine Ada%ent *elleas!rement *ontrol
:
,n GS# $efine ) +rigger
)o+hresholdsLe($L R5 L$R4# -2dm 95 L$94# 3 N5 L$N4# <
$efine +arget *ellSele%tion
R5 Le( in *ell# -dm
$efine Ad *ell
5:AD7S arameters
*ell ,dentifier
*9,*) E%?No ffset
$isa"le Effe%t on Re'orting Range
Lo%ation Area *ode
a5im!m =E +J 9ower on RA*)
o"ile *o!ntr *ode
o"ile Network *ode
o"ile Network *ode Len
9rimar *9,*) 'ower
NR+ )9S ,dentifier
9rimar S%ram"ling *ode
RN* ,dentifier
Ro!ting Area *ode
R+ )9S ,dentifier
+5 $i(ers it ,ndi%ator
$efine Ad*ell
:
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SHO# /eigh$or Cell Definition• ADJSid or ADJDid identif ,ntra-fre/!en% neigh"ors AD7S0D4
• +he A$HS?A$H$ 'arameters 'ro(ide information on the identit of ea%h neigh"or %ell together with its
'ro'erties ie )ando(er 'arameter set identifier> s%ram"ling %ode et%4
• Ea%h neigh"or %ell defined " UTRAN Cell Identifier = MCC + MNC + RNC identifier + Cell identifier
• ** o"ile *o!ntr *ode4 F AdjsMCC N* o"ile Network *ode4 F AdjsMNC RN* ,dentifier F AdjsRNCid
*ell ,dentifier F AdjsCI
• +he LA* AdjsLAC 4 & RA* AdjsRAC 4 are also in AD7S 'arameter set
• Analog for AD7D
AD7S Parameters
• Separate Handover Parameter Set 1HOPS2 identifiers for R+ & NR+ traffi%#• RtHopsIdentifier - R+
• NrtHopsIdentifier - NR+
• HSDPAHopsIdentifier - )S$9A
• RTWithHSDPAHopsIdentifier – AMR + HSDPA
• HOPSid )9S4# identifies ea%h )9S o"e%t !ni/!el in the RN* - on to whi%h the xxHopsIdentifier 'arametersare ma''ed to identif the a''ro'riate )9S 'arameter set for that 'arti%!lar neigh"or %ell
• AdjsScrCode: 9rimar s%ram"ling %ode to s'e%if neigh"or %ell
• AdjsTxDiv # s'e%ifies whether neigh"or %ell is !sing +5 di(ersit
• AdjsTxPwrRACH # determines ma5 =E 'ower for 9RA*) when a%%essing the neigh"or %ell
same
for AddK
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AdjsMCC AdjsMNC AdjsRNCid AdjsCI
UTRAN Cell ID
ADJSid
MaxActiveSetSize
RNC
AdjsScrCode
AdjsTxDiv AdjsTxPwrRACH
• R+ ) *ontrol 9arameter# RtHopsIdentifier • NR+ ) *ontrol 9arameter# NrtHopsIdentifier • NR+ ) *ontrol 9arameter# HSDPAHopsIdentifier •
NR+ : R+ ) *ontrol 9ar# RTWithHSDPAHopsIdentifier
SHO# /eigh$or Cell Definition
AD7S0D arameters#
neigh"or %ell
identit & 'ro'erties
AD7S0D arameters#
neigh"or %ellidentit & 'ro'erties
Ma3Active
SetSi4e#
.*SD 23D 5
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Ma3imum num$er of neigh$ors & S*:: length limitation
• 3G99 has in%onsistent re/!irements %on%erning the ma5im!m n!m"er of neigh"oring %ells that %an
"e "road%asted in the S, 11 & 12 & 1• S, 11 & 12 & 1 %an %ontain information on the ma5im!m of 6 %ells 32 intra-fre/!en% %ells> 32 inter-
fre/!en% %ells & 32 GS %ells4
• h)sical si4e of S* data 1no more than 5<<= $its2 has %a'a%it onl for ≈ >? cells
• ,f too man ada%en%ies are de%lared> the %ell will go "lo%ked " sstem with alarm# ! WCDMA C"## OUT O$
US" **) s%hed!ling error4 in RAN0<
• As a r!le of th!m"> ass!ming that K ADJS=15, ADJG=15, ADJI=15
K and ;realisti% worst %ase (al!esM> S,11 length F 317 32 -O P
•some sites might need additional neigh"ors and might 'ose a 'ro"lem with the S,11 limitation
• %ells whi%h are not "road%asted as neigh"or %ells are normall not re'ortedD S) are not 'ossi"le to themD "!tthis
"eha(io!r %an "e %hanged with# $SR feat!reFurther information Technical Note No. 046 / Restriction onnumber of
cells in SIB11/12 due to inconsistenc !roblem in "#$$ TS2%.""1
• a5im!m n!m"er of neigh"ors that %an "e defined in RN* data"ase#• AD7S# 5: 31 neigh"ors : ser(ing %ell F 32 %ells to meas!re4• AD7*# 5=0carrier9 total >@• AD78 0L# B9 AD7L# each 5=• AD7D# 5=
• +otal# ma5 17 in RN* data"ase
• Limitation e5ists d!e to s'e%ifi%ations of S,11?12 siCeQ> "!t is remo(ed for Rel6 =Es (ia S*::$is
option%l fe%t&re
Detected Set Reportin
DSR ! Meas"re#ents
allows =E to report !
$andover to ce%%s notinc%& in t$e nei$'or %ist
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.3tension of S*::# S*::$is
Parameter for S*::$is#
AD'S: ADJxSI(: ,n%l!de in Sstem ,nformationindi%ates whether the intra-fre/!en% neigh"or %ell is in%l!ded in
the S, 11> 12 & 1 for the %ell sele%tion & re-sele%tion 'ro%ed!res
AD'(SI) F 0 FO dont in%l!de in an S,
ADJxSI( : FO in%l!de in S,11 1default2
ADJxSI( = FO in%l!de in S,11"is
• Cells • /eigh$oring cell t)e
• 32 • ,nter-.re/!en%
• 32 • ,ntra-.re/!en%
• 32 • ,nter-Sstem
S*::$is rovides the caacit) for defining#
S, 11?12# meas!rement %ontrol information for =E in RR* ,dle?*onne%ted mode
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Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er • 9arameters a''ing• SHO .vents and Measurements• )ard )ando(er & RR* *onne%tion Release
• ,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
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Soft Handover
• )* s!''orts the following measurement reorting events and feat!res#• .vent :A# A 'rimar *9,*) enters the re'orting range N%ell addition4
• .vent :# A 'rimar *9,*) lea(es the re'orting range N%ell deletion4
• .vent :C# A non-a%ti(e *9,*) "e%omes "etter than an a%ti(e 'rimar *9,*) N%ell
re'la%ement4
• Cell individual offsets for modifing meas!rement re'orting "eha(io!r
• e%hanism for for$idding a neigh$oring cell to affe%t the re'orting range
• )ando(er de%ision 'erformed " RN* "ased on meas!rements and a(aila"le reso!r%es
• Admission *ontrol %an ree%t the "ran%h addition in %ase the ma5im!m load is a%hie(ed in
$L threshold : offset4> (alid "oth for R+ and NR+ "itrates
• )ard "lo%king ma 're(ent "ran%h addition
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SHO# Measurement Averaging
,ilter resonse
-2
-20
-1
-10
-
0
Measurements
D a l u e 9
d & eas!red
.iltered> k F 3
.iltered> k F
,ilter resonse
-12
-10
-
-6
-<
-2
0
t 1 3 7 1 1 1 3 1 1 7 1 2 1 2 3 2 2 7 2 3 1 3 3
Measurements
D a l u e 9 d & eas!red
.iltered> k F 3
.iltered> k F
$e%rease effe%t of noise
$ela to fast %hanges
.c/oAveraging6indowa(eraging " RN*)9SD 132D 1D @
.c/o,ilterCoefficientfiltering " =E
.*SD 0216D 02D ;EB s
!. %an 'erform a(eraging on E%?,o
meas!rement 'rior to the e(ent re'orting
'ro%ess#
R/C a(erages *9,*) E%?,o
meas!rements !sing#
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SHO# Measurement Control
/ode
!(RA/
R/C!.
Measurement Control F G
, am in the
C.LLDCH s!"-state
eas!rement +'e# ,ntra-fre/!en% meas!rements• Re'orting e(ents#
:A# A 'rimar *9,*) enters the re'orting range:# A 'rimar *9,*) lea(es the re'orting range:C# A non-a%ti(e *9,*) "e%omes "etter than an a%ti(e'rimar *9,*)
• 9eriodi%al re'orting ? e(ent triggered• eas!rement /!antit# *9,*) E%?No• et%
S)stem *nformation F G
S* ::0:=• )MCS* +cNo)i%terCoefficient • $MCS* ,,-!.,,/s* ,,/s* ,--#s
eas!rement a%%!ra% de'ends on• s'eed &• .ilter *oeffi%ient
+cNoAverain.indow HOPS* !-0* !* / #eas& reports
A''lied for a(eraging of
'eriodi%al meas re'orts
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:A# A Primar) CP*CH .nters the Reorting Range
Strongest CP*CH in AS
time
Ec/Io
P CP*CH 5
P CP*CH :
P CP*CH =
1
2
AdditionTi#e AdditionReportinInterva% .*SD 016D ;E< s
RNC
MeasurementReort
Add tothe ASI
no
ActiveSet.ei$tinCoefficient $MCS* ,11* ,1!* -
3
4
.vent :A reorts#all AS %ells : 2 monitored %ells
(S =<E55: RRC
.vent :A#
Mnew J
6 K Msum "
1 : + 6 2K M$est
Addition6indow
(S =<E55: RRC
.vent :A#
Mnew J
6 K Msum "
1 : + 6 2K M$est
Addition6indow
Ma3Active
SetSi4e#
.*SD 23D5
AdditionTi#e.*SD 0000D :;; ms
Addition.indow $MCS* ,11!212* ,13* 0 d(
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Strongest CP*CH in AS
(ime
Ec/Io
P CP*CH 5
P CP*CH :
P CP*CH =
1
2
3
DropTimeMeasurement
Reort
:# A Primar) CP*CH leaves the Reorting Range
Remo(e there'orted %ellfrom the AS
.vent :#
Mold
6 K Msum "
1 : + 6 2K M$est
Dro6indow
.vent :#
Mold
6 K Msum "
1 : + 6 2K M$est
Dro6indow DropTi#e.*SD 0000D B>; ms
Drop.indow $MCS* ,11!212* ,13* , d(
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Rep%ace#ent ReportinInterva% $MCS* ,11!.* -&1 s
time
weakest CP*CH5 in AS
.c 0*o
P CP*CH 5
P CP*CH :
P CP*CH =
P CP*CH >
AS has 5 cells
5
:
=
Rep%ace#ent.indow
Rep%ace#entTi#e
MeasurementReort
R/C
ASudateI
no
:C# A non+active CP*CH $ecomes $etter than an active rimar) CP*CH
.vent :C#
Mnew J MlnAS "
Relacement6indow
.vent :C#
Mnew J MlnAS "
Relacement6indow
Rep%ace#entTi#e.*SD 0000D B>; ms
Ma3Active
SetSi4e#
.*SD 23D 5
Rep%ace#ent.indow $MCS* ,11!212* ,13* 2 d(
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*ndividual /cell Offset
time
P CPICH 1
P CPICH 2
P CPICH 3
ReortingRange
Reorting.vent :
Reorting.vent :A
Adjs+cNo3ffset CPICH "45No Offset
A$HSD -1010 dD0 dD ; d
Enlarging *ell 3 " 5 d
Ec/Io
• %ell indi(id!al offsets for modifing meas!rement re'orting "eha(io!r
• effe%ti(el Tmo(esT %ell "order shrinks or enlarges %ell4
• offset a''lied to 9rimar *9,*) meas!rements "efore e(ent
e(al!ation " the =E
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,or$idding /eigh$or Cell from Reorting Range
Time
P CPICH 1
P CPICH 2
P CPICH 3
PCP*CH5 is for$idden toaffect the reorting range asits -ualit) is -uite unsta$leE
Report
inR!ne AdjsDERR
Ec/Io
AdjsD+RR A$HSD ;# .na$le ? 1# $isa"le
D.RR# $isa"le Effe%t on
Re'orting Range
• the 9-*9,*) of %ertain %ells %an "e for"idden from re'orting
range %al%!lation in some instan%es !sing AdjsD+RR A$HS4
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Branch addition
RRC" #e!$%rement Report &e1!'
RRC" Acti(e Set )p*!te
RRC" Acti(e Set )p*!te Comp+ete
RRC" #e!$%rement Report &e1'
RRC" Acti(e Set )p*!te
RRC" Acti(e Set )p*!te Comp+ete
) E m o ( i n
Branch deletion
Soft Handover signalling
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.vent :A1Add2
.vent :1Dro2
.vent :C1Relace2
Active set cells "= monitored setcells
Monitored setcells
Addition6indow0 > d
Active set cells Active set cellsDro 6indow0
B d
Active set cells "= monitored set
cells+
Relacement6indow0 = d
Addition (ime 0 :;; ms
AdditionReorting
*nterval 0 ;E< s
Dro time 0 B>; ms
+
Relacementtime0 :;; ms
RelacementReorting*nterval0
;E< s
.ventReorting cell
status(riggeringCondition
Reorting Range0H)steresis
(ime to (rigger Reorting
*nterval
SHO Summar)
• 3G99 re'orting e(ents 1A> 1 & 1* also 6.?6G4• *9,*) E%?,o is !sed as a meas!rement /!antit rather than *9,*) RS*9
•
*9,*) E%?,o meas!rements are more a%%!rate• 1A & 1 re'orting range is defined " strongest a%ti(e set %ell• 1* re'orting range is defined " weakest a%ti(e set %ell
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Measurement Reort !dating
• eas!rement re'orting %riteria are %ell s'e%ifi%
• Neigh"oring %ells A$HS & )9S 'arameters4 are defined on a %ontrolling %ell %ell from whi%h
the %all has "een started or "est %ell in %ase the original %ell has "een deleted from the AS4
• $!ring S) the meas!rement re'orting %riteria are taken from the %ell where the =E has
started the %onne%tion
• +he meas!rement re'orting %riteria are !'dated onl when the original %ell lea(es the A%ti(e Set
NSN ,m'lementation4> a%%ording to the strongest %ell in the A%ti(e Set> " sending the
EAS=REEN+ *N+RL message> transmitted on the $L $**) Standard wo!ld allow to
!'date re'orting %riteria> a%%ording the %!rrent "est ser(er
• @hen the =E re%ei(es a EAS=REEN+ *N+RL message> the =E shall sto'
monitoring & meas!rement re'orting and shall re'la%e the meas!rement re'orting %riteria
with the new information re%ei(ed in the EAS=REEN+ *N+RL message
AS# A%ti(e Set
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Measurements Reorting Criteria !dating during Soft Handover
Ce%% 4Ce%% 2
•
N ei 6h7or #is t Cell!
• Add i ti on W i nd o8 C ell!
• Drop W ind o8 C ell!
• Dro p T i/eC ell!
!1 Idle Mode
S5ste#Infor#ation
6(CCH7
)"S T S er 9er : C ell !)"S T Ser9 er: C ell !
1 Conne4tedMode:CellDCH
+he =E shall %ontin!emonitoring the list of
neigh"oring %ells assigned inSstem ,nformation d!ring ,dle
ode
+he =E shall %ontin!emonitoring the list of
neigh"oring %ells assigned inSstem ,nformation d!ring ,dle
ode
M eas" re#ent R eport i n Cr i ter iaac c ord in t o C e%% 4
M eas" re#ent R epor t in C r it eriaac cord i n to C e% % 4
+he =E shall send theEAS=REEN+ RE9R+
message when re'orting%riteria are f!lfilled
+he =E shall send theEAS=REEN+ RE9R+
message when re'orting%riteria are f!lfilled
*onne%ted ode#
*ellU$*)
01M"ASUR"M"NTR"PORT ;DCCH<
M eas" re#ent R epor t in C r iteriaac cord in to C e% % 4
M eas" r e#ent Re por tin C ri t eri a acc ord in to Ce% % 4
,ntra-fre/!en% eas!rement,ntra-fre/!en% eas!rement
+he meas!rement re'orting%riteria are !'dated as soonas the original %ell dro's o!t
from the A%ti(e Set /S/*mlementation2E
+he meas!rement re'orting%riteria are !'dated as soonas the original %ell dro's o!t
from the A%ti(e Set /S/*mlementation2E
*onne%tedode#*ellU$*)
0&
M+AS8R+M+NTC3NTR3L
6DCCH7
• N ei6h7or #ist C ell+
• Add iti on W indo8 Cell+ • Dr o p W indo8
Cel l+ • Dro p Ti/eCell +
)"S T S er9 er : C ell + )"S T Ser9er: C ell +
M eas" re#ent R epor t in C r iteriaac cord in to C e% % 2
M eas" r e#ent Repor tin C ri t eri aacc ord in to Ce% % 2
Reportin Criteria
8pdatin
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/eigh$or List Measurement during SHO
Ce%% 4Ce%% 2
,ntra-fre/!en% eas!rement,ntra-fre/!en% eas!rement
• Add i tion W ind o8 Cell!
• Dro p Wi ndo8 Cell!
• Dr op Ti /eCell!4& S5ste#
Infor#ation 6(CCH7
)"S T Ser9 er: C ell !)" S T Ser9er: C ell !
Neigh"or List *ell 1Neigh"or List *ell 1
Me as" r e #ent R epor ti n C r i te ri a ac cord in to
Ce %% 4
M e as"r e #ent R epor ti n C ri te ri a ac c ord in to
C e %% 4
A4 ti 9e Set: C el l ! A4 ti9 e S et: Cel l !
+
0
3
+
0 3
01 M"ASUR"M"NTR"PORT ;DCCH<
4A
4(.1 M"ASUR"M"NTR"PORT ;DCCH<
0& ACTI9+ S+T8PDAT+
/& M+AS8R+M+NTC3NTR3L 6DCCH7
• Ad di t ion W i nd o8 C ell+ •
Dro p W i nd o8 C ell+ • Dro p T i /eC ell+
)" S T Ser9er: C ell + )"S T Ser 9er : C ell +
M e%s & r e/ent R e porti n6C ri ter i% %44 ord in6 to C el l +
Me%s & re/ent R eport i n6C riter i% %4 4 ord in6 to Cell +
Nei6h7or #istUpd%te
!
0
2
!
0
2
Neigh"or List *ell 2Neigh"or List *ell 2
A4 ti 9e Set: C el l + A4 ti9 e S et: Cel l +
Me%s1 Rep1Criteri% Upd%te
Me as" re #e nt R epor t i n C r ite ri a ac cord in to
Ce %% 4
Me as" r e #ent R epor ti n C r i te ri a ac cord in to
C e%% 4
0
!
2
+ 3
0
!
2
+ 3
Neigh"or List *om"inationNeigh"or List *om"ination
Nei6h7or #ist
Upd%te
1& M+AS8R+M+NTC3NTR3L 6DCCH7
A4ti9e Set: Cell! Cell A4ti9e Set: Cell! Cell
2& Set"pCa%%
2& Set"pCa%%
:& ACTI9+ S+T8PDAT+
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*nter+R/C Soft HO
• ,nter-RN* soft )ando(ers are 'erformed if#
• RN*: I"r8PS"pport indi%ates the s!''ort of the
!ser 'lane o(er ,!r
• )9S: +na'%eInterRNCs$o indi%ates whether
%ell %an 'arti%i'ate in a S)
cell5 cell=
cell:
cell>
cellB
cell<
RNC RNCI"r8PS"pport
,=RD 0 No4 ? : Ves4
+na'%eInterRNCs$o)9SD 0 No4 ? : Ves4
•
therwise> )* %he%kswhether )ard )ando(er
is 'ossi"le
H d C l
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Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er#• 9arameters a''ing• S) E(ents and eas!rements• Hard Handover & RRC Connection Release
• ,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er
•
GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
H d H d HHO
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Hard Handover HHO• ,f RN* is not a"le to add or re'la%e E(ent 1A ? 1*4 an N%ell from the AS> =E sends 'eriodi%
meas!rement re'orts AdditionReportinInterva% ; Rep%ace#entReportinInterva% 4 !ntilD• N%ell is added?re'la%ed in to AS
• N%ell lea(es re'orting range
• ) no longer re/!ired eg different N%ell enters AS4
• RN* ma not "e a"le to add?re'la%e N%ell d!e to a4 ,!r %ongestion or "4 inter-RN* S) is
're(ented d!e to setting of +na'%eInterRNCs$o HOPS4 9oint 1 in ne5t slide4
• ,f *9,*) E*?N of non-a%ti(e N%ell %ontin!es to in%rease it will %a!se additional interferen%e d!e
to a non-o'timal %onne%tion 'oint 24
1
2
• +o a(oid e5%essi(e =L interferen%e> RN* will 'erform an intra-fre/!en% )) if either of the
following %riteria are met
• A(eE%No$ownlink and A(E%NoN%elln4 F meas!red (al!es for the "est AS %ell
and the nth
NS %ell> a(eraged o(er +cNoAverain.indow meas!rements• E%No$ownlink and E%NoN%elln4 F instantaneo!s (al!es
• HHoMarin)orAve+cNo )9S4 F a(erage E%?N0 marginD -6 6D 01D : d
• HH3MarinPea<+cNo )9S4 F 'eak E%?N0 marginD -6 6D 0D = d
3 A(eE%No$ownlink : HHoMarinAverae+cNon4 A(E%NoN%elln4
E%No$ownlink : HHoMarinPea<+cNon4 E%NoN%elln4
H d H d.c/oAveraging6indow
a(eraging " RN*
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(ime
Ec/Io
P CP*CH 5
P CP*CH :
P CP*CH =
Reportinr!ne
1
2
HH3MarinAverae+cNo
HH3MarinPea<+cNo
E(ent1A
A(eE%No$ownlink : HH3MarinAverae+cNo A(eE%NoN%ell
E%No$ownlink : HH3MarinPea<+cNo E%NN%ell
Hard Handover
3
a(eraging " RN*)9SD 132D 1D @
AdditionReportinInterva% .*SD 016D ;E< s
AdditionTi#e.*SD 0000D :;; ms
HH3MarinAverae+cNo$MCS* . 11 .* ,1!* 4 d(
HH3MarinPea<+cNo$MCS* . 11 .* ,13* 2 d(
RRC C ti R l
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RRC Connection Release
• ,f differen%e "etween the "est AS %ell and the NS %ell is too high and S) is not'erformed> the RR* %onne%tion is released to a(oid e5%essi(e interferen%e
•
@h might an AS !'date not "e 'ossi"leW• "(4essi9e lo%d in the nei6h7orin6 4ell
• H%rd 7lo4>in6 in the t%r6et )TS
• Un%9%il%7ilit? of D# spre%din6 4odes
• I&7 tr%nsport reso&r4es &n%9%il%7le
• +his f!n%tion is a%ti(ated " +na'%eRRCRe%ease )9S4?,=no ;def<@! =?es
• +he RR* %onne%tion is released if either#
A(eE%No$ownlink : Re%easeMarinAverae+cNo6n4 A(E%NoN%elln4
E%No$ownlink : Re%easeMarinPea<+cNo6n4 E%NoN%elln4
• Re%easeMarinAverae+cNo )9S4 = a(erage E"?N0 margin . 11 .* ,1!* 2&1 d(
• Re%easeMarinPea<+cNo )9S4 = 'eak E"?N0 margin . 11 .* ,13* =&1 d(
• Emergen% %alls are e5em't from RR* *onne%tion Release 'ro%ess
RRC C ti R l + '% RRCR %
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(ime
Ec/Io
P CP*CH 5
P CP*CH :
P CP*CH =
Reportinr!ne
1
2
Re%easeMarinAverae+cNo
Re%easeMarinPea<+cNo
E(ent1A
RRC Connection Release
3
AdditionReportinInterva%
.*SD 016D ;E< s
AdditionTi#e
.*SD 0000D :;; ms
Re%easeMarinAverae+cNo$MCS* . 11 .* ,1!* 2&1 d(
Re%easeMarinPea<+cNo$MCS* . 11 .* ,13* =&1 d(
A(eE%No$ownlink : ReleaseMargin,orAve.c/on4 A(E%NoN%elln4
E%No$ownlink : ReleaseMarginPeak.c/on4 E%NoN%elln4
+na'%eRRCRe%ease )9SD ; 1/o2 ? 1 Ves4
Handover Control
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Handover Control• )ando(er +'es
• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er • Measurement triggering• *,+ & *S+ Measurements• Comressed+Mode• *,+ & *S+ HO decision• *S+ HO cancellation• ,orced AMR voice call handover to 8SM•
58+=8 Cell Reselection
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
*,HO0*SHO Process Overview
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*,HO0*SHO Process Overview
) +riggering +hresholds set in RN*) +riggering +hresholds set in RN*
E(ent +riggered )reasons f!lfilled in RN*E(ent +riggered )reasons f!lfilled in RN*
RN* %ommands sele%ted =Es4 to start,.?,S meas!rements
RN* %ommands sele%ted =Es4 to start,.?,S meas!rements
eas!rements are done in
*om'ressed ode *4
eas!rements are done in
*om'ressed ode *4
=E re'orts "est GS %ells RSS,4 to RN*=E re'orts "est GS %ells RSS,4 to RN*
RN* makes ) de%ision and%ommands =E to target %ell
RN* makes ) de%ision and%ommands =E to target %ell
S,* (erifi%ation for GS %ellsS,* (erifi%ation for GS %ells
different de%ision methods for ,. )onl 1 de%ision method for ,S )
*o(erage?*a'a%it ) Reasons: Load-> Ser(i%e- & ,S,- "ased )ando(er
A"o!t 2 ) 'arameters
re'orting %ells are A%ti(e Set %ells ma5 54: ma5 B ,.)> ma5 B ,S) neigh"ors
ma5 32 neigh"ors %o!ld "e meas!red
< ,nter-.re/ neigh"ors32 ,nter-Sstem neigh"ors
%an "e meas!red
=E re'orts "est =+S %ellsE%?,oD RS*94 to RN*
*,HO0*SHO measurements difference
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*,HO0*SHO measurements+ difference
• ,. meas!rements
• ,S meas!rements
• S,* (erifi%ation re/!ired in %ase neigh"or list in%l!des m!lti'le GS neigh"ors!sing the same R. %arrier
WCDMA
IS-HOMeasurement
Trigger Target Cell ound
RSSI meas! BSIC "eri#cation
IS-HODecision
WCDMA
I$-HOMeasurement
Trigger Target Cell ound
I$ -measurements
I$-HODecision
*nter+,re-uenc) Handover over *ur
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SR/C DR/C
/ode /ode
D+Cell=
f=
C/
S+Cell=f=
S+Cell:
f:
• 'tionall R=10 allows ,.)
(ia ,!r
• +his ma "e !sef!l in (ario!smo"ilit and %onfig!ration
s%enarios
• SRN* & $RN* %omm!ni%ate
a"o!t ,.- neigh"ors
• Normal ,ntra-RN*
meas!rement & de%ision'ro%ed!res a''l
Handover Control
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Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% & ,nter-Sstem )ando(er#• Measurement triggering• ,.- & ,S- eas!rements• *om'ressed-ode• ,.- & ,S- ) de%ision• ,S- ) %an%ellation• .or%ed AR (oi%e %all )ando(er to GS•
3G-2G *ell Resele%tion
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
*,+0*S+ Handover Measurement (riggering Reasons
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*,+0*S+ Handover Measurement (riggering Reasons
>E DL DPCH aroaches itsma3E allowed ower ,MC*# I)H3ca"seTxPwrDL,MC8# >SMca"seTxPwrDL
<E Nualit) deterioration reortfrom !L outer loo PC,MC*# I)H3ca"se8p%in<?"a%it5 ,MC8# >SMca"se8p%in<?"a%it5
5E !. (3 ower aroaches itsma3E allowed ower9 event BA0BD,MC*# I)H3ca"seTxPwr8L,MC8# >SMca"seTxPwr8L
= E Low measured a$soluteCP*CH RSCP9 .vents :.0:,,MC*# I)H3ca"seCPICHrscp@,MC8# >SMca"seCPICHrscp
:E Low measuredCP*CH .c0/o9 .vent :.0:, ,MC*# I)H3ca"seCPICH+cNo,MC8# >SMca"seCPICH+cNo
Measurement(rigger
B E Others+ Load and Service $ased HO+ *MS* $ased HO+ .mergenc) *SHO
,re-uenc) Measuring Control for *nter+,re-uenc) ,MC*,re-uenc) Measuring Control for *nter+S)stem 18SM2 ,MC8
1&2 are triggered>
when all %ells re'ort 1E
< is triggered> when : %ells re'orts
alues for all Parameter #; 1not used2 ? 1 !sed4
: Measurement trigger CP*CH .c0/o
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:E Measurement trigger CP*CH .c0/o
• RN* starts ,.?,S meas!rement when E(ent 1. o%%!rs for all %ells in the a%ti(e set# A 9rimar
*9,*) "e%omes less than an a"sol!te threshold
• RN* sto's ,.?,S meas!rement when E(ent 1E o%%!rs for at least 1 %ell of the a%ti(e set # A
9rimar *9,*) "e%omes "etter than an a"sol!te threshold• Note# *,0*S measurements can $e stoed if E(ent 1.s are %an%elled " E(ents 1E onl when
,.)?,S) was not s!%%essf!l & onl inside the time "etween * meas!rements> s'e%ified "
the time Inter$reMinMe%sInter9%l 5 Bs/MinMe%sInter9%l: 160sD 1sD :;s> re% 2s
• .iltering a''lied "efore e(ent e(al!ation in the =E#
• .*S# "4No$ilterCoeffi4ient 5 ,,-!.,, /s* 0= .,,/s filterin6 period
• .vent :. 'arameters#• +riggering %onditions# A%ti(e set %ells
• )steresis# not !sed in 1E
• +hreshold !sed fre/!en%# $MCS :
HHo+cNoCance% * 211,* !* B d(
• +ime-to-trigger# $MCS:
HHo+cNoCance%Ti#e* ,113,,,* 42/- #s
•
Amo!nt of re'orting# infinit• Re'orting inter(al# not a''lied
• Re'orting %ell stat!s# ma5 3 a%ti(e %ells
• .vent :, 'arameters#• +riggering %onditions# A%ti(e set %ells
• hsteresis# not !sed in 1.
• +hreshold !sed fre/!en%# $MCS :
HHo+cNoT$res$o%d 5 211,* !* 42 d(
• +ime-to-trigger# $MCS:
HHo+cNoTi#eH5steresis * ,113,,,* 4-- #s
•
Amo!nt of re'orting# infinit• Re'orting inter(al# not a''lied
• Re'orting %ell stat!s# ma5 3 a%ti(e %ells
:E Measurement trigger CP*CH .c0/o
+cNo)i%terCoefficient =E filtering "efore e(ent e(al!ation
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:E Measurement trigger CP*CH .c0/o
Re%orting e"ent& 1E" P-CPICH e.cee*$ !n !$o+%te tre$o+*10" '-C'ICH alls (elo) an a(solute threshold *HO+ triggered i all,
Time
Ce++ 1 Ce++ 2
Ce++ 3
!$o+%tetre$o+*
9 - *
9 , * )
E %
? N o
:.# HHo+cNoCance% .*SD -2<0D 1D + d
:.# HHo+cNoCance%Ti#e.*SD 0000D :=@; ms
:,# HHo+cNoTi#eH5steresis.*SD 0000D :;; ms
Qmeas!rements
:,# HHo+cNoT$res$o%d .*SD -2<0D 1D +:= d
=E filtering "efore e(ent e(al!ation
.*SD ,,-!.,,/s* ,--#s
=E Measurement trigger CP*CH RSCP
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=E Measurement trigger CP*CH RSCP
• =E %ontin!all monitors 'ilot %hannels of +Ss in AS
• E(ent 1.# RS*9 of a Node falls "elow threshold> HHoRscpT$res$o%d
• RN* starts ,.?,S meas!rements when e(ent 1. o%%!rs for all %ells in AS
•
RN* sto's ,.?,S meas!rements when e(ent 1E o%%!rs for at least one %ell of AS• Note# ,.?,S meas!rements %an "e sto''ed if e(ent 1.s are %an%elled " e(ents 1E onl when
,.)?,S) was not s!%%essf!l and onl inside the time "etween * meas!rements> s'e%ified " the
time Inter$reMinMe%sInter9%l 5 Bs/MinMe%sInter9%l 160sD 1sD :;s> re% 2s
• =E filtering "efore e(ent e(al!ation !sing HHoRscp)i%terCoefficient D .*SD 200K1600D 2--#s
• E(ent 1E A 'rimar *9,*) e5%eeds an
a"sol!te threshold4 'arameters#• +riggering %onditions# A%ti(e set %ells
• hsteresis# not !sed in 1E
• +hreshold !sed fre/!en%# $MCS:
HHoRscpCance% * !!3113* !* 4-2 d(#
• +ime-to-trigger# $MCS:
HHoRscpCance%Ti#e* ,113,,,* 42/- #s
•
Amo!nt of re'orting# infinit• Re'orting inter(al# not a''lied
• Re'orting %ell stat!s# ma5 3 a%ti(e %ells
• E(ent 1. A 'rimar *9,*) falls "elow an
a"sol!te threshold4 'arameters#• +riggering %onditions# A%ti(e set %ells
• )steresis# not !sed in 1.
• +hreshold !sed fre/!en%# $MCS:
HHoRscpT$res$o%d !!3113* !* 4-1 d(#
• +ime-to-trigger# $MCS :
HHoRscpTi#eH5steresis * ,113,,,* 4-- #s
•
Amo!nt of re'orting# infinit• Re'orting inter(al# not a''lied
• Re'orting %ell stat!s# ma5 3 a%ti(e %ells
=E Measurement trigger CP*CH RSCP
HHoRscp)i%terCoefficient =E filtering "efore e(ent e(al!ation
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<2 © Nokia Siemens Networks RN31677EN30GLA1
gg
Re%orting e"ent& 1E" '-C'ICH eceeds an a(solute threshold10" '-C'ICH alls (elo) an a(solute threshold *HO+ triggered i
all,
Time
Ce++ 1 Ce++ 2
Ce++ 3
!$o+%tetre$o+*
9 - *
9 , * )
R S *
9
:.# HHoRscpCance% .*SD -11-2D 1D +:;= dm
:.# HHoRscpCance%Ti#e.*SD 0000D :=@; ms
:,# HHoRscpTi#eH5steresis.*SD 0000D :;; ms
Qmeas!rements
:,# HHoRscpT$res$o%d .*SD -11-2D 1D +:;< dm
g
.*SD ,,-!.,,/s* 2--#s
5E Measurement trigger !. (3 Pw 1!L Coverage2
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gg 1 g 2• RN* orders ,.?,S meas!rements when one of the following e(ent o%%!rs#
• .vent BA# +he =E +5 'ower "e%omes larger than an a"sol!te threshold• .vent BD# +he =E +5 'ower rea%hes its ma5im!m (al!e
• the =L data rate allo%ated to the !ser m!st not e5%eed WC"#: HHoMaxA%%owed(itrate8L 50 >7ps•
RN* %alls off inter-fre/!en% meas!rements when .vent B o%%!rs# the =E +5 'ower "e%omes less than ana"sol!te threshold• .iltering a''lied "efore e(ent e(al!ation in the =E#
• Interfre8+TxPwr)i%terCoeff $MCI* !,112, /s* 4-#s• >SM8+TxPwr)i%terCoeff * $MCB* !,112, /s* 4-#s
• .vent BA arameters#
• +ime-to-trigger# 0s
•
=E +ransmitted 9ower threshold F min8+txPowerMaxDPCH > 9ma54 X =EU+JU9@ERUthreshold
• 8+txPowerMaxDPCH * WC"#* 3,1100* !* 2 d)/* ma5allowed =L +5 'ower on $9*) in the a%ti(e %ell>
• Pma3# ma5 =E R. o!t'!t 'ower
• !.(PO6.R(hreshold de'ends on ser(i%e t'e#
• Interfre8+TxPwrT$rAMR * $MCI* !,11,* !* = d(
• Interfre8+TxPwrT$rCS * $MCI* !,11,* !* = d(
• Interfre8+TxPwrT$rNrtPS * $MCI* !,11,* !* 4 d( • Interfre8+TxPwrT$rRtPS * $MCI* !,11,* !* = d(
• >SM8+TxPwrT$rAMR;CS;NrtPS;RtPS * $MCB*
!,11,* !* =;=;4;=; d(
• .vent BA & B arameters# time-to-trigger
• Interfre8+TxPwrTi#eH5st * $MCI*
,113,,,* !* 42/- #s • >SM8+TxPwrTi#eH5st * $MCB*
,113,,,* !* 42/- #s
• .vent BD arameter# Not !sed in NSNRAN4
5E Reorting .vents BA9 B & BD 1!L Coverage2
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g 9 1 g 2
timetime to trigger
! . ( 3 P o w e r
!. (ransmittedPower (3 (hreshold
B
BA
BD
min1 8+txPowerMaxDPCH 9 PMA2
BA# +he =E +5 'ower e5%eeds an a"sol!te threshold
B# +he =E +5 'ower falls "elow an a"sol!te threshold
BD# +he =E +5 'ower rea%hes its ma5im!m (al!e Not !sed in NSN RAN4
Interfre8+TxPwrTi#eH5st * .*,D 0000D 1D :=@; ms
>SM8+TxPwrTi#eH5st * .*GD 0000D 1D :=@; ms
8+ETFEP3.+RET$res$o%d #Ser(i%e de'endent4
.*,?GD -100 dD def# +5 ? : d
8+txPowerMaxDPCH -02<D 1D => dm
>E Measurement trigger DL DPCH 1DL Coverage2
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DLcodeP6R + Po8erOffsetD#dp44hPilot J Pt3RLma3 " DLDPCH(P6R(hreshold
gg 1 g 2
• RN* orders =E to make ,.?,S meas!rements when $L +J 'ower of a single radio link rea%hes threshold
defined as#
eam%le& -.//dBm 0 11dBm23332*-.dB,
NTE" Eiter CD#A or GS# i++ e me!$%re*, not ot$$tem$
• $LU*$EU9@R F meas!red $L %ode 'ower
on the 'ilot "its of the $9**)-field
• 9t5URLUma5 F *9,*) 9wr : AJU$LU$9*)U +J9@R
• *9,*) 9wr F +5 'ower of the *9,*) of an a%ti(e %ell 9t59rimar*9,*) ser(ing RN*4 or
Ads*9,*)+59wr drifting RN*4?33 dm> range -10K0 dm> ste' 01 dm
• AJU$LU$9*)U+J9@R F ma5im!m transmission 'ower le(el of the $9$*) sm"ols a "ase
station %an !se on the $9*)> e5'ressed as a relati(e (al!e to the *9,*) 'ower
• $LU$9*)U+J9@RU+hreshold F de'ends on the ser(i%e t'e
• InterfreDLTxPwrT$rAMR;CS;RtPS;NrtPS $MCI* !,11,* ,13* 4;=;=;4 d(
• >SMDLTxPwrT$rAMR;CS;RtPS;NrtPS $MCB* !,11,* ,13* =;=;=;4 d(
• ,n Addition> the $L data rate allo%ated to the !ser m!st not e5%eed
• WC"#: HHoMaxA%%owed(itrateDL
>E Measurement trigger DL DPCH 1DL Coverage2
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<6 © Nokia Siemens Networks RN31677EN30GLA1
No*e RNC
DCH Data $rame
Iu(!.
DLCOD.P6R + PowerOffsetDLdcchPilot
≥ Pt3RLma3 " DLDPCH(P6R(HR.SHOLD
a5 9ower on $9*) eg 33 dm4
Ser(ing@*$A %ell
timeIt4s time to triggerHO measurements
in the U5
e!g! Radio 6in7 Measurement Re%ort*e!g! Transmitted Code 'o)er 8alue,
HHoMaxA%%owed(itrateDL
E5am'le S'ee%h#9ower $ata its O 33dm : -3d4 : -1d4
9ower $ata its O 2 dm Y1@4
DLEDPCHETFP.RET$res$o%d dependin6 on Ser9i4e
$MCI5B* !,11,* ,13* 4 or G= d(
91+9*9ilot
"its
+.*,$ata 2 "its$ata 1 "its
92
a5 9ower on *hannel
<E Measurement trigger !L Nualit)
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<7 © Nokia Siemens Networks RN31677EN30GLA1
( a r g e t S
* R
Ma3 S*R target
#in SIR t!ret
Act%!+ SIR t!ret
:st Nualit) deterioration reort from PC to HC inside R/C
=nd Nualit) deterioration reort 1while the condition is
satisfied the message is eriodicall) reeated2
time
S*R S*R
R/C
HHoMaxAlloweditrate!"
RNCNualit) Deterioration reort
from !L Outer Loo PC
Nualit) Deterioration reortfrom !L Outer Loo PC
8L?"a%DetRepT$res$o%d
RN*# 0 sD 0sD ;E<s
+na'%e8L?"a%DetRep
RN*# ; 1/o2 ? 1 Ves4
Handover Control
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• )ando(er +'es
• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er#• eas!rement triggering• *,+ & *S+ Measurements• *om'ressed-ode• ,.- & ,S- ) de%ision• ,S- ) %an%ellation• .or%ed AR (oi%e %all )ando(er to GS•
3G-2G *ell Resele%tion
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
*,HO measurements
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• After HO triggering message is sent to R/C> a RR* message Meas!rement *ontrolM is sent
to =E %ontaining details of the meas!rement that the =E m!st e5e%!te eas!rement re'orting
is 'eriodi%al Ma3E B *, cells can $e reorted No filtering in meas!rements " =E
• ='on re%e'tion of the meas!rements re'orted " the =E> RN* a''lies a sliding a(eraging
window to the *9,*) E%?No & *9,*) RS*9 meas!rements +he a(eraged le(els are !sed as
in'!t to the inter-fre/!en% de%ision algorithm
•
.rom ea%h %ell in AS ma5F34 also *ntra+fre-uenc) measurements are done at same time
RNCRR*# Meas!rement %ontrol M message
Z%arrier 2Z meas!rements4
U5
RNC
*9,*) E%?No and *9,*) RS*9 meas!rements arere'orted thro!gh Meas!rement re'ortM messages
U5
RR*# Meas!rement re'ortM
RR*# Meas!rement re'ortM
Measurement reort#$oth *ntra+& *nter+,re-uenc) results9
no !. measurement filtering
5 neigh$or info send to !.#!(RA R, channel9 cell
individual offset 1.c0/o29rimar) scram$ling code
Inter)reMeasRepInterva%
$MCI* ,13112* -&1 s
*,HO Measurements Aim of Nce%%Searc$Period #
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+rigger
RN* %ommands @+S and =E to 'erform *
no *,HO allowed *,HO allowed
t
Inter)reNce%%Searc$Period
.*,D 020D 1D ; not !sedQ4
@ait !ntil eno!gh meas!rements of N %ells are a(aila"le for RN* to identif target %ell
[al!e 1>2>3>N means# 1>2>3>N eas!rement Re'orts need to arri(e in RN* to de%ide
,f no target %ell fo!nd> 'ro%ed!re ma restart
if trigger o%%!rs again after#
+F0
Q ie 1 meas!rement is eno!gh for de%ision
Inter)reMaxMeasPeriod .*,D 1120D 1D B
Inter)reMeasRepInterva%
.*,D 0 <D ;E< s Inter)reMinMeasInterva%
.*,D 1 60D 1D = s
Inter)reMeasAve.indow sliding windowD .*,D 132D 1D B
3 se%
Measurement Control Parameters# ,MC*
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• Inter)reMeasRepInterva% # .*,D 0<D ;E< s• inter(al "etween meas!rement re'orts> whi%h are sent to +S
• Inter)reMinMeasInterva% : $MCI* !11.,* !* 2 s• inim!m eas!rement ,nter(al> wait time when the following * starts> ,n %ase of an !ns!%%essf!l ,.)
attem't> the network will dea%ti(ate %om'ressed mode for a time 'eriod gi(en " this 'arameter• Inter)reMeasAve.indow # .*,D 132D 1D B
• eas!rement A(eraging @indow siCe> sliding window is !sed
• Inter)reMaxMeasPeriod # .*,D 1120D B reorts• a5im!m eas!rement 9eriod> determining ma5 allowed d!ration of the ,.-meas!rement
• ,f the RN* is not a"le to e5e%!te an inter-fre/!en% )ando(er> it shall sto' ,.-meas!rements after =E has
sent 'redefined n!m"er of meas!rement re'orts to the RN*
• a5 allowed d!ration of the ,.-meas!rement is %al%!lated#
• Inter)reMeasRepInterva% K Inter)reMaxMeasPeriod ;,13s.< F3s>
• +his is aligned with the t'i%al time needed for ,.-meas!rements
• Inter)reNce%%Searc$Period : .*,D 020D 1D ; • neigh"or %ell sear%h 'eriod 'arameter> ,.) is not allowed !ntil the are eno!gh meas!rement re'orts gi(en
" this 'arameter
• means that onl 1 meas!rement res!lt is eno!gh for de%ision making• $!ration of the %ell sear%h 'eriod F Inter$reMe%sRepInter9%l Inter$reN4ellSe%r4hPeriod :1
,.# ,nter-.re/!en%
*SHO measurements
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• After HO triggering message is sent to R/C> a RR* message Meas!rement *ontrolM is sent to =E
%ontaining details of the meas!rement that the =E m!st e5e%!te eas!rement re'orting is
'eriodi%al Ma3E B 8SM cells %o!ld "e meas!red " =E and re'orted to RN* No filtering in
meas!rements " =E
• ='on re%e'tion of the meas!rements re'orted " the =E> RN* a''lies a sliding a(eraging window to
the RJLE[ meas!rements +he a(eraged le(els are !sed as in'!t to the ,S-) de%ision algorithm
R/CRR*# Meas!rement %ontrol M messageGS RSS, meas!rements4
=E
R/C
RJLE[ meas!rements are re'orted thro!ghMeas!rement re'ortM messages
=E
RR*# Meas!rement re'ortM
RR*# Meas!rement re'ortM
(he first measurement reorthas info from the $est 8SM cell#
CCH fre- & RSS*9 no filteringused in !.
>SMMeasRepInterva% $MCB* ,13112* -&1 s
*SHO Measurements8SM RSS* measurements +timing+
Aim of Nce%%Searc$Period #
@ait !ntil eno!gh meas!rements of N %ells are a(aila"le for RN* to identif target %e
[al!e 1 2 3 N means# 1 2 3 N eas!rement Re'orts need to arri(e in RN* to de%ide
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+rigger
RN* %ommands @+S and =E to 'erform *
no *SHO allowed *SHO allowed
t
>SMNce%%Searc$Period
.*GD 020D 1D ; not !sedQ4
[al!e 1>2>3>N means# 1>2>3>N eas!rement Re'orts need to arri(e in RN* to de%ide
3 se%
,f no target %ell fo!nd> 'ro%ed!re ma restart
if trigger o%%!rs again after#
+F0
RN* starts re%ei(ing window
sliding4
Q ie 1 meas!rement is eno!gh for de%ision
>SMMaxMeasPeriod
.*GD 1120D 1D B
>SMMeasRepInterva%
.*GD 0 <D ;E< s>SMMinMeasInterva%
.*GD 1 60D 1D = s
>SMMeasAve.indow .*GD 132D 1D B
Measurement Control Parameters# ,MC8
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• >SMMeasRepInterva% # .*GD 0<D ;E< s• ,nter(al "etween meas!rement re'orts> whi%h are sent to +S
• sho!ld "e ke't to 0 se%onds ,n%reasing the re'orting inter(al wo!ld in%rease the ,S) 'ro%ess
dela
• >SMMinMeasInterva% : $MCB*!11.,* !* 2 s• inim!m eas!rement ,nter(al> wait time when the following * starts ,n %ase of an !ns!%%essf!l ,S-
) attem't> the network will dea%ti(ate %om'ressed mode for a time 'eriod gi(en " this 'arameter
• >SMMeasAve.indow # .*GD 132D 1D B
• eas!rement A(eraging @indow siCe> sliding window is !sed
• BSMM%(Me%sPeriod # .*GD 1120D 6 re'orts•
ma5 eas!rement 9eriod whi%h determines ma5 allowed d!ration of ,nter-sstem meas!rement• ,f the RN* is not a"le to e5e%!te an inter-sstem )ando(er> it shall sto' the inter-sstem
meas!rements after the =E has sent the 'redefined n!m"er of meas!rement re'orts to the RN*
• a5im!m allowed d!ration of the inter-sstem meas!rement is %al%!lated#
• BSMMe%sRepInter9%l BSMM%(Me%sPeriod ;=,13s.< F3s>
• +his is aligned with the t'i%al time needed for GS meas!rements
• >SMNce%%Searc$Period # .*GD 020D 1D ; • Neigh"or %ell sear%h 'eriod 'arameter> ,S) is not allowed !ntil there are eno!gh meas!rement
re'orts gi(en " this 'arameter
• means that onl 1 meas!rement res!lt is eno!gh for de%ision making
• $!ration of the %ell sear%h 'eriod is %al%!lated# BSMRepInter9%l BSMN4ellSe%r4hPeriod+!
*SHO# S*C erification
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© Nokia Siemens Networks RN31677EN30GLA1
• After sele%tion of target GS %ell> RN* sends to =E the RR* message Zeas!rement %ontrolM
in%l!ding details to meas!re MS,*M
• =E sto's RSS, meas!rements and !'dates the transmission ga' 'attern to the 'attern !sed for
S,* de%oding +he meas!rement re'orts are sent 'eriodi%all to RN*
• ,f =E !na"le to de%ode the S,* d!ring gi(en 'eriod> S,* meas!rement o'eration is a"orted
R/C
RR*# Meas!rement %ontrol M messageS,* de%oding4
@*$A
,S-) trigger +arget *ell fo!nd ,S-) %ommand
RSS, meas S,* (erifi%ation
• N!m"ers of GS %ells in theneigh"or %ell list
• Re'orting inter(al• Sliding a(eraging window•
+ransmission ga' 'attern for RSS, meas!rements
+S,* de'ends on #
• +ransmission ga' 'attern for S,* de%oding
+RSS, de'ends on
Handover Control) d +
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• )ando(er +'es
• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er#
• eas!rement triggering• ,.- & ,S- eas!rements• Comressed+Mode• ,.- & ,S- ) de%ision• ,S- ) %an%ellation• .or%ed AR (oi%e %all )ando(er to GS• 3G-2G *ell Resele%tion
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
Comressed Mode CM in !L
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8SM (S 6CDMA (S
DL
DL CM 1this should $e off when 8SM is measured2
!L CM 1needed to avoid interference2
During 6CDMA transmissionsignal leakage will go to 8SMR3 also
CM#asterSwitc$
RNC* - "sed * ! = not &sed
Comressed Mode CM
CM#asterSwitc$
RNC* - "sed * ! = not &sed
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• * was introd!%ed to @*$A to allow inter-fre/!en% sstem4 )ando(ers• * is !sed to %reate idle 'eriods ga's4 in the transmission d!ring whi%h n%ell meas!rements on
another fre/!en% %an "e made
• Ga's %an "e %reated !sing single or do!"le frame a''roa%h NSN s!''orts "oth4• e%a!se same data amo!nt is sent in a shorter time more 'ower is needed d!ring * "oth in =E &
+S4
⇒ affe%ts @*$A *o(erage total %o(erage red!%tion 21 d4• .ast 9ower %ontrol information might "e lost d!ring the ga' FO higher E"?No
⇒ affe%ts @*$A *a'a%it *a'a%it degradation 2B4
• *om'ressed frames ma "e lost if 'ower %ontrol is not set %orre%tl
⇒ affe%ts @*$A I!alit
• * methods are Sreading ,actor Halving 1S,0=2 and Higher La)er Scheduling 1HLS2
Normal rame Normal rame
Measurement ga%Measurement ga%'o)er 9DataRate
Com%ressedMode
Measurement 8a6ength o ga%&
1 < = 6 timeslots
HLSModeSe%ection: ,=!5 H#S@ ! =052 H#S*
defa"%t* - 4;2 HLS
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in transmitted +Ss 'er .rame# ≥
radio rame radio rame
T:6
1; <; =; 6 timeslots
Single+frame method
radio rame radio rame
T:6
Dou$le+frame method6ength o ga%&1; <; =; 6; ./; or .<
timeslots
defa"%t* - 4;2 HLS
Dou$le frame is !sed in %ase of HLS data rateSingle frame is !sed in %ase of S,0= & HLS Q data rate
How man) !.s in Comressed Mode I
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PtxTaret; PrxTaret
$L?=L'ower
Load
Ptx3ffset; Prx3ffset
New =Es %an "e swit%hed to * when#P((Tot%l P((T%r6et &
\ of =Es in * M%(N&/7U"CM4o9erHO
: new =E in * %an "e allowedif the limit is not rea%hed
/o new =E %an "e in * here
Ma3/um$!.CMcoverHO#RN*D 02D :B
Ma3/um$!.CMcoverHO#RN*D 02D :B
• Sele%tion of the %om'ressed mode method is 'erformed in the following wa#
Comressed Mode*nitiate Comressed Mode
configure 8SM measurements
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AR> R+ 9S>*S data> or !ltiQ-
Ser(i%e
AR> R+ 9S>
*S data> or !ltiQ-
Ser(i%e
• Sele%tion of the %om'ressed mode method is 'erformed in the following wa#
S,0= for "oth =L & $LS,0= for "oth =L & $L • %om'ressed mode trigger 'arametersha(e to "e set so that there is room for'ower in%rease d!e to %ode s'litting
otherwise 'ower in%rease is %!t and/!alit of %onne%tion gets worse d!ringthe %om'ressed frames
• =sage of alternati(e s%ram"ling %ode is'ossi"le if RN9 'arameter AltS4r%/7lin6CodeCM ena"les
+ransmission Ga' 9attern#
Single frame# 7 slot ga'>
(aria"le \ of normal frames
+ransmission Ga' 9attern#
Single frame# 7 slot ga'>
(aria"le \ of normal frames
NR+ 9S data ser(i%eNR+ 9S data ser(i%e
HLS for "oth =L & $LHLS for "oth =L & $L
+ransmission Ga' 9attern#+ransmission Ga' 9attern#
)LS ] ⇒ Single frame#
7 slot ga'
)LS ] ⇒ Single frame#
7 slot ga')LS ^ ⇒ Dou$le frame#
7 slot ga'
)LS ^ ⇒ Dou$le frame#
7 slot ga'
Sele%tion "etween HLS Q &HLS
Sele%tion "etween HLS Q &HLS
HLSModeSe%ection: ,=!5 H#S@ ! =052 H#S*
defa"%t* - 4;2 HLS
Q AR : 9S data>
AR : *S data>
9S data : *S data
Handover Control
• )ando(er +'es
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• )ando(er +'es
• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er • eas!rement triggering• ,.- & ,S- eas!rements• *om'ressed-ode• *,+ & *S+ HO decision• ,S- ) %an%ellation• .or%ed AR (oi%e %all )ando(er to GS• 3G-2G *ell Resele%tion
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
*,+ HO Decision criteria
Nualit) Criterion in case trigger was DL DPCH Power or CP*CH .c0/o#
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-11-2D 1D +:;; dm -033D 1D 0
no defa!ltD eg 2< dm
21?2<?27?33 dm
-2<2<D 0D : d
;4ontin&ed<
-0100D 1D = d
-2<0D 0D +:5 d
Nualit) Criterion in case trigger was DL DPCH Power or CP*CH .c0/o#
A.RSCP/C.LL 1n2 E AdjiMinRSCP6n7 #ax6-@ AdjiTxPwrDPCH6n7
PEMAF7
Signal le(el from new %ell O re/!ired Signal le(el in new %ell : ad!stment d!e to allowed 'ower
A..c/o/C.LL 1n2 A.CP*CH.c/o Adji+cNoMarin6n7
E%No on new %ell "etter than E%No in old %ell : margin
Pathloss Criterion in case trigger was !. (3 Power9 CP*CH RSCP or !L DPCH Nualit)#
A..c/o/C.LL 1n2 AdjiMin+cNo6n7
E%No on new %ell "etter than re/!ired E%No in new %ell
CPICHEP3.+R A.CP*CHRSCP
CPICHEP3.+RENC+LL 6n7 A.RSCP/C.LL 1n2
AdjiP%ossMarin6n7 9athLoss in old %ell O 9athLoss in new %ell : margin
T/ere is 0ad
*,+ HO Signalling
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RRC" #EAS)RE#ENT CNTR7 *I$ meas details,
)E
ISH#tri$$ered%
Eve&t 'A()*+,
RNC
RRC" #EAS)RE#ENT REPRT *5"ent >A?.$!!,
RRC" #EAS)RE#ENT REPRT *C$N; T:'S,
Radio "i&-Set.p
Periodic I*measReporti&$
RRC" PH8SICA7 CHANNE7 RECN0IG)RATIN *Timing Indication,
RRC" PH8SICA7 CHANNE7 RECN0IG C#P7ETE
Ha&doverDecisio&
!!
Compressed Mode
Compressed Mode parameters
T/ere is 0ad1.alit2co&ditio&s i& t/eli&- ,,
3it/ t/ei&4ormatio&$ot5t/e RNC
assesses t/e 0estcell5 a&d decidesto attempt a&I*H# to it
RRC" PH8SICA7 CHANNE7 RECN0IG)RATIN
RRC" PH8SICA7 CHANNE7 RECN0IG C#P7ETE
I* meas.reme&t set.p a&dCompressed Mode activatio
*,+ HO Nualit) Criteria
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HO@
a, A85RSC'NC566 *n, 0 &d'i(inRS)$*n+ 2 ma*/; &d'iT,$-r$)*n+ 'MA3,(, A855cNoNC566 *n, 0 A85C'ICH5cNo 2 &d'icNo(arin*n+
&d'i(inRS)$*n+
m!.&9, &d'iT,$-r$)*n+ -P:#A;'
(,
&d'i(incNo*n+
&d'icNo(arin*n+
A855cNoNC566*n,
!
'
A855cNoNC566*n, A85C'ICH5cNo 3
&d'icNo(arin*n+
*,+ HO Pathloss Criteria
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a, &5cNo5N)*n+ 0 &d'i(incNo*n+
b+ )$I)5$78R - A85C'ICHRSC' 0)$I)5$78R5N)*n+ - A85RSC'NC566*n, 2 &d'i$loss(arin*n+
(est acti"e set
cell
A*<iP+o$$#!rin&n'
(est inter-reuenc
cell
'A855cNoNC566 *n, 0 AdEiMin5cNo*n,
A*<i#inEcNo&n'
!'
*S+ HO Decision.ollowing %onditions ha(e to "e satisfied> "efore an inter-sstem )ando(er %an "e %ond!%ted +he "est
i h" i ll t f lfil f ll i it i " t; di t E ?N 4
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neigh"oring %ell m!st f!lfil following %riterion 8"est; a%%ording to E%?No4#
A.RL./Cell1n2
J AdjRxLevMinH36n7 " ma31;9 AdjTxPwrMaxTCH6n7 + Pma34
where• A[EURJLE[ UN%elln4 is the a(eraged GS %arrier RSS, (al!e of the GS neigh"or
%elln4> a(eraging done dire%tl from dm (al!es no linear a(eraging4D .*G#
>SMMeasAve.indow 5 .@ !-0 /e%s report1• AdgR5Le(in)n4 determines min re/!ired RSS, dm4 le(el of the neigh"or %elln4• Adg+59wra5+*)n4 indi%ated ma5 +5 'ower le(el dm4 an =E ma !se in GS
neigh"or %elln4• 9UAJ# ma5 =E 'ower %a'a"ilit
• ,f se(eral GS %ells f!lfil the e/!ation a"o(e> %ells are ranked "ased on HOPB: AdjPriorit5Coverae;- @ r%n6e ,-
• A %ell is ranked higher than another %ell if it has a higher 'riorit le(el e(en tho!gh its signalstrength %ondition was worse
• ,nter-sstem ) %o!ld "e for"idden d!ring the first meas!rements re'orts from the =E> to let the =Ere'ort all the %andidate inter-sstem %ells in its neigh"or hood
•
$MCB Nce%%Searc$Period 5 ,
*S+HO Decision criteria
A[E RJLE[ N*elln4 O AdjRxLevMinH36n7 : ma50> AdjTxPwrMaxTCH6n7 - 9 ma54
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AdjRxLevMinH36n2
ma31;9 AdjTxPwrMaxTCH6n7 + Pma32
A[EURJLE[UN*elln4 AdjRxLevMinH36n7 ma50> AdjTxPwrMaxTCH6n7 9Uma54
GS %ell0<3D 1D 55 dm-110-<7D 1D +< dm
CNU5 Node RNC
*S+HO 58 +J =8 + AMR Signalling ,low
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• S,* (erifi%ation alwas 'erformed for AR %alls X no interr!'t in (oi%e %all
CNU5B
RNC
RRC& Measurement Re%ort
RRC& MeasurementControl
NBA'& Radio 6in7 Recon#guration
're%areNBA'& Radio 6in7 Recon#gurationRead NBA'& Radio 6in7 Recon#guration
CommitRRC& 'hsical ChannelRecon#gurationRRC& 'hsical Channel
Recon#guration Com%lete NBA'& Com%ressed ModeCommand
RRC& Measurement Re%ort
RRC& MeasurementControl
NBA'& Com%ressed ModeCommand
RRC& Measurement Re%ort
RRC& MeasurementControl
RRC& Hando"er rom UTRANCommand
#S( BSI)Identi9cation
#S( RSSI(easurem
ent
IS7 trierin*" reasons are !ossible+
Initial)om!ressed(ode)on9uration
RANA'& RelocationReuired
RANA'& RelocationCommand
RANA'& IU ReleaseCommand
RANA'& IU ReleaseCom%lete
U5
NodeB
RNC
CN
*S+HO 58 +J =8 + PS Signalling ,low
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• ,n most %ases S,* (erifi%ation is not re/!ired data interr!'t as =E mo(es to 2G4
• 9S makes !se of RR*# *ELL *)ANGE R$ER .R =+RAN message
5 BRRC& Measurement Re%ort
RRC& MeasurementControl
NBA'& Radio 6in7 Recon#guration
're%areNBA'& Radio 6in7 Recon#gurationRead
NBA'& Radio 6in7 Recon#gurationCommit
RRC& 'hsical Channel Recon#guration
RRC& 'hsical Channel Recon#gurationCom%lete
NBA'& Com%ressed Mode Command
RRC& Measurement Re%ort
RRC& Measurement Control #S( RSSI (easurement
IS7 trierin *% reasons are !ossible+
Initial )om!ressed(ode )on9uration
RANA'& SRNS ContetReuest
RANA'& SRNS Contet Res%onse
RANA'& IU ReleaseCommand
RANA'& IU ReleaseCom%lete
RRC& Cell Change Order romUTRAN
RANA'& SRNS Data $or)ardCommand
Handover Control• )ando(er +'es
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• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er#• eas!rement triggering• ,.- & ,S- eas!rements• *om'ressed-ode• ,.- & ,S- ) de%ision• *S+ HO cancellation • .or%ed AR (oi%e %all )ando(er to GS•
3G-2G *ell Resele%tion
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
*SHO Cancellation ISH3Cance%%ation*
RNC* Disa'%ed 6-7 ; "n%7led ;!<
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RN*=E
A%ti(ate * & meas!rements
=E meas!res GS
"!t also ,ntra-
fre/!en% Re'orting e(ent rele(ant for %an%ellation# 1A>1*>1E> 6
=E or RAN trigger
starts ,S)
or RAN internal
e(ent allow
%an%ellation
*an%el * & meas!rements
E(ent 1E# *9,*) RS*9 or E%?No e5%eeds threshold
*SHO Cancellation
• ,S) meas!rements ma "e started in the =E d!e to
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• ,S)-meas!rements ma "e started in the =E d!e to• =E +J 'ower
• $L $9*) 'ower
•
*9,*) RS*9• *9,*) E%?No
• +he ,S)-meas!rement 'hase takes a few se%ondsD d!ring that time
the %onditions in the @*$A laer ma %hange FO *an%ellation
• AS ='date %an also %an%el ,S)
• No %an%ellation on%e meas!rement 'hase is %om'leted
• *an%ellation will red!%ed sstem load d!e to signaling & *
• A%ti(ation 'er RN* re/!ired# ISHOC%n4ell%tion
• defa!lt ena"led in .*G o"e%t 'er trigger reasons ISHOCl4%&seFFF
• N!m"er of %an%ellation 'er =E & AS m!st "e less than M%(N&/ISHOClPerAS
MaxN"#ISH3CIPerAS M%( N&/7er of ISHO
C%n4ell%tions per AS for % U" !113* !* 4
*S HO ll ti d t DL DPCH "
*SHO Cancellation for DL ower
ISH3C %% ti
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• *S+HO cancellation due to DL DPCH 'ower %an "e
'erformed onl when all of the following %onditions are met#• .eat!re ena"led in RN* and all affe%ted %ells for +59wr$L
%a!se
• Less than MaxN"#ISH3C%PerAS for the =E
• *S+measurements were started d!e to DL DPCH ower
• ( ower DLDPCH(P6R(HR.SHOLD in all %ells
where it had "een a"o(e "efore> as indi%ated "
NA9?RNSA9#$E$,*A+E$ EAS=REEN+ RE9R+
•
$L %ode 'ower of a single RL satisfies the following e/!ation#
$LU*$EU9@R - Po8erOffsetD#dp44hPilot
CPICHPOW"R : MAFD#DPCHTFPWR :
D#DPCHTFPWRTHR"SHO#D : D#DPCHTFPWRCANC"#O$$S"T
Ma3/um*SHOC*PerASM%( n&/7er of ISHO C%n4ell%tions
per A4ti9e Set for % U" !113* !* 4
DLDPCHTxPwrCI3ffset .11, d)* !d)* =d(
ISH3Cance%%ation*
RNC* Disa'%ed 6-7 ; "n%7led ;!<
.3amle signaling flow• .vent :. triggered meas!rement re'ort re%ei(ed for *9,*) E%No
SRN* -)*SRN* -A*?9S+S=E
$RN*
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SRN* )*SRN* A*?9S+S=E
CM Required
NA9?RNSA9# RL Re%onfig!ration *ommit
RR*# 9h? +r *hannel Re%onfig!ration
RR*# eas!rement *ontrol *nter+S)stem Meas4
RR*# eas!rement Re'ort .vent :. for CP*CH .c/o4
RR*# eas!rement Re'ort RSS* Meas4
Sto' *
NA9?RNSA9# RL Re%onfig!ration 'ro%ed!re or * *ommand
RR*# 9h?+r *hannel Re%onfig!ration 'tional4
NA9?RNSA9# RL Re%onfig!ration 9re'are
NA9?RNSA9# RL Re%onfig!ration Read
$RN*
RR*# 9h? +r *hannel Re%onfig!ration *om'lete
Load and start * A%k
Sto' * A%k
M
e
a
su
r
e
m
e
n
t
p
h
as
e
Inter-systemmeasurement cancellation
decision
RRC Measurement Control
RR* eas!rement Re'ort .vent :, for CP*CH .c/o4
Handover Control
• )ando(er +'es
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• ,ntra-.re/!en% )ando(er
•
,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er#• eas!rement triggering• ,S- & ,S- eas!rements• *om'ressed-ode• ,.- & ,S- ) de%ision• ,S- ) %an%ellation• ,orced AMR voice call handover to 8SM• 3G-2G *ell Resele%tion
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
,orced Handover for AMR oice Call
AMR "oice call setu% in 1:
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#ax& a%%owed 8+ Tx Power ;e161 ! d)/<
>s#8+TxPwrT$rAMR #.*GD -600D 1D +5 d
here# + B; d
• .eat!re %an "e !sed to '!sh
3G AR %alls to 2G
• E5treme 'arameter setting for ,S)
trigger %a!se ;=E +5 'owerM e(ent 6A4
WCDMA
:SM
orced hando"er
to :SM
F!!GU5 RNCRRC& RadioBearerSetu%
RRC& RadioBearerSetu%Com%lete
RRC& MeasurementControl
RRC& MeasurementRe%ort *e"ent >A,
$MCB: BSM4%&seT(P8rU#
$MCB: Bs/U"T(P8rThrAMR
,S) meas!rements & ) to GS
=E immediatel answers
with eas!rement Re'ort
;ushM means Handover9 not Directed+Retr)
Remem"er#
BA#!. (3 ower J
a$solute threshold
>SMca"seTxP.R8L.*GD 0 no4 ? : 1)es2
Handover Control
• )ando(er +'es
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• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% ,.-4 & ,nter-Sstem ,S-4 )ando(er#
• eas!rement triggering• ,.- & ,S- eas!rements• *om'ressed-ode• ,.- & ,S- ) de%ision• ,S- ) %an%ellation• .or%ed AR (oi%e %all )ando(er to GS• 58 → =8 Cell Reselection
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
Cell Reselection# Measurement Rules
SintrasearchSintersearchSsearchRA( mS3S-ual 1in ,DD mode2
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/o need tomeasureneigh$or
cells
*ntra+fre-uenc)
*ntra+fre-uenc)
*nter+fre-uenc)
serving cell
E5am'le# NSN
I/!almin F -1 d>
Sintrasear%h F 10d>
Sintersear%h F d>
Ssear%hURA+ F <d
@hen to 'erform
meas!rements
*ntra+fre-uenc)
*nter+
fre-uenc)
*nter+RA(
- d-10 d-1< dE*?N0 F
SinterSearch#
020D def# @ d
SintraSearch#020D def# :; d
SsearchRA(#020D def# > d
N-ualMin#-2<0D def# +:@ d
S-ual CP*CH .c0/o
- -NualMin
S-ual J Sintrasearch
Cell Reselection 58 → =8
SinterSearch#
SintraSearch#020D 2D :; d
-NualMin+=>0D 1D +:@ d
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,irst ranking of all the cells $ased onCP*CH RSCP 16CDMA2 and RSS* 18SM2
Rs CP*CH RSCP " ?$5st4Rn R3lev1n2 + ?offset4
Rn 18SM2 J Rs 16CDMA2And
R3lev 18SM2 J?rx%evMin
es/o
Cell re+selectionto 8SM
/eigh$or 6CDMA or 8SMcell calculation with offset
Parameter
Serving 6CDMA cellcalculation9 with
h)steresis arameter
!. starts 8SM measurements ifCP*CH .c0/o ?"a%Min " sSearc$RAT
SintraSearc$
SinterSearc$
Ssearc$RAT
*9,*) E%No
?"a%Min
Second ranking onl) for 6CDMAcells $ased on CP*CH .c0/o
Rs CP*CH .c0/o " Nh)st=
RnCP*CH.c0/o1n2 + Noffset=
Cell re+selection to
6CDMA cell of highestR value
SinterSearch#020D 2D @ d
D D
Nh)st=0 <0D 1D = d
AdisNoffset=-0 0D 1D ; d
AdgNr3levMin-11 -2D 2D +:;: dm
AdgNoffset-0 0D 1D ; d
=>0D 1D :@ d
Nh)st:0 <0D 1D ; d
SsearchRA(#020D 2D > d
Cell Reselection 58 → =8
• =E ranks ser(ing & meas!red neigh"oring %ells to find o!t if resele%tion sho!ld "e made• All the meas!red s!ita"le %ells S-%riteria4 are in%l!ded in the ranking
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4 g
• *riteria for a s!ita"le %ell S-%riteria4 is defined as
• @*$A ,.-neigh"or %ell# *9,*) E%?No O Adjs?"a%#in & *9,*) RS*9 O Adjs?rex%ev#in
•
@*$A ,.-%ell# *9,*) E%?No O Adji?"a%#in & *9,*) RS*9 O Adji?rex%ev#in• GS %ell# R5le( O ?rx%ev#in
• Ranking is done !sing Criteria R & =E resele%ts to %ell with highest R-%riteria R-%riteria is defined as#• .or ser(ing %ell# Rs F ?#eas@s : ?$5sts
• .or neigh"oring %ell Rn F ?#eas@n ?offsetts@n
• Imeas is *9,*) E%?No for @*$A %ell and R5Le( for GS %ell
• +here is no timer defined how long GS sho!ld "e f!lfilling the re-sele%tion %riteria• )owe(er there is r!nning a(erage of < GS meas!rements whi%h 'ro(ides some 'rote%tion against
'ing 'ong time (i%e "ased on $RJ %%le length and as sliding window a(erage4
• ,n %ase additional 'rote%tion is needed it %an "e arranged " !sing the ?$5st4 'arameter for
@*$A ser(ing %ell RS*94 or Adj?offset4 for GS neigh"or ing %ell R5Le(4
,irst ranking of all the %ells "ased on
CP*CH RSCP 16CDMA2 and RSS* 18SM2
Rs CP*CH RSCP " ?$5st4Rn R3lev1n2 + ?offset4
How to avoid ing ong I
• @hen 'hone is %am'ed on 3G> GS meas!rements %an start when *9,*) E%?,o of
ser(ing %ell is "elow Sse%r4h RAT : G&%lMin
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ser(ing %ell is "elow Sse%r4hRAT G&%lMin
• @hen 'hone is %am'ed on GS> %ell resele%tion to 3G is 'ossi"le if *9,*) E%?,o of the
%andidate is a"o(e $DDG/in
• +herefore> to a(oid 'ing 'ongs "etween 3G and GS the following %ondition sho!ld "e
met#
,DDNmin J N-ualMin"SsearchRA(
>%!+#in=-1? *
S$e!rc:RAT=4 *
CPICH Ec/Io
0DD:min @= -12*ualMin 2SsearchRAT
t
C!mpin on 3G C!mpin on GS# C!mpin on 3G
Handover Control
• )ando(er +'es
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)ando(er +'es
• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% & ,nter-Sstem )ando(er
• GS ,S) & *ell Resele%tion 2G → 3G4• Load ased Handover from 8SM to 6CDMA• *ell Resele%tion
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
Load $ased Handover 8SM +J 6CDMA
Load of 8SM cell
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100B
0B
0B
Load reason
)ando(ersfor s'ee%h
9a%ket $ata to @*$Aregardless of GS load
9a%ket $ata to @*$Aregardless of GS load
S'ee%h to @*$A
onl with high GS load
S'ee%h to @*$A
onl with high GS load
)igher "it ratesfor data !sers
)igher "it ratesfor data !sers
ore %a'a%it
for s'ee%h
ore %a'a%it
for s'ee%h
9a%ket **) 'arameters %an "e !sed
to '!sh G9RS mo"iles to @*$A
9a%ket **) 'arameters %an "e !sed
to '!sh G9RS mo"iles to @*$A
8tranHoT$ScTpdc
/-K
Load & Coverage Reason Handover
GS highloaded
Load reason)ando(er for s'ee%h
Load reason)ando(er for s'ee%h
6CDMA can $e used
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GSGS
GSGS
GSGS
@*$A lowloaded
GSGS GSGS
@*$A@*$A @*$A@*$A
)ando(er for s'ee%h
@*$A@*$A GSGS
Load reason )ando(er
*o(erage reason)ando(er
6CDMA can $e usedto relieve 8SM overload
8SM can $e used to e3tend6CDMA coverage area
6CDMA can $e usedto relieve 8SM overload
8SM can $e used to e3tend6CDMA coverage area
o"ile mo(ing
Load $ased Handover Process# 8SM+J 6CDMA
9 t t f th S* t th "il
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)ando(er +riggering +hresholds set in S*)ando(er +riggering +hresholds set in S*
,nter-RA+ meas!rements starts in %ase+he RL. of the ser(ing %ell is a"o(e or
"elow the gi(en threshold NsearchC
,nter-RA+ meas!rements starts in %ase+he RL. of the ser(ing %ell is a"o(e or
"elow the gi(en threshold NsearchC
Handover Decision is done in %ase of Load of the ser(ing %ell O Load(hreshold
& *9,*) E%?NoO min .c0/o (hreshold
Handover Decision is done in %ase of Load of the ser(ing %ell O Load(hreshold
& *9,*) E%?NoO min .c0/o (hreshold
S sele%ts the target =+RAN %ell "asedon meas!rement res!lts
S sele%ts the target =+RAN %ell "asedon meas!rement res!lts
)ando(er %ommand is send to S*)ando(er %ommand is send to S*
S is meas!ring the =+RAN %ells %ontin!o!slif the are defined as a neigh"or >
+he n!m"er of GS neigh"or re'orted %o!ld "e 3-6de'ending on the set (al!e of 'arameter,DDM!L(*RA(R.POR( 0>1>=def >34
+he load is meas!red in the %ell le(el " %om'aringthe o%%!'ied +*)s to the a(aila"le +*)s 20 s
inter(al !sed4
Load +hreshold for S'ee%h *alls or +rans'arent
$ata inter-RA+ )ando(er#utranHo(hSc(dc 1Min (raffic Load (DHO29
default @;T
min.cno(hreshold 1Min CP*CH .C0/O
(hreshold29 default :< d
9arameters are sent from the S* to the mo"ilein the eas!rement ,nformation message
*SHO =8 +J 58 Parameters9arameter S'e%ifi%ation name Nokia 'arameter Range $efa!lt (al!e
min traffi% load for s'ee%h %all LA$ +)RES)L$ .R S* utranHo(hSc(dc 1L(SC2 0 100B @;T
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min traffi% load for s'ee%h %all LA$U+)RES)L$U.RUS*U ,SU)
utranHo(hSc(dc 1L(SC2 0-100B @;T
minim!m *9,*) E%?,o le(el ,NUE*NU+)RES)L$ min.cno(hreshold
1M.(2
-2<K0 d +:< d
min inter(al "etween !ns!%% ,S)attem't
,NU,N+ER[ALUE+@EENU=NS=**U,S)UA++E9+
min*nt!nsucc*sHo 1!M*!2 0K2 s 5 s
threshold for m!lti-RA+ S Isear%hU* -SearchC 1NSRC2 0K1 1 ne(er4 recE ?1alwa)s2
S'e%ifi%ation name 9arameter e5'lanation [al!e range Note
.$$URE9UI=AN+ ,ndi%ates the re'orting /!antit for =+RAN.$$ %ells
0FRS*9>1FE*?N
Not t!na"le>.i5ed (al!e 1
3GUSEAR*)U9R, ,ndi%ates if 3G %ells ma "e sear%hed whenS,* de%oding is re/!ired
0 F no>1 F es
Not t!na"le>.i5ed (al!e 1
.$$U=L+,RA+URE9R+,NG +he n!m"er of %ells from the a%%esste%hnolog?mode .$$ that shall "e in%l!dedin the meas!rement re'ort
0K3 Not t!na"le>.i5ed (al!e 2
Isear%hU*U,nitial ,ndi%ates the Isear%h (al!e to "e !sed in
%onne%ted mode "efore Isear%hU* isre%ei(ed
0 F !se Isear%hU,>
1 F _ alwas4
Not t!na"le>
.i5ed (al!e 0
C h a n g e a $ l e
H i d d e n
Handover Control
• )ando(er +'es
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• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% & ,nter-Sstem )ando(er
• GS ,S)• Load ased )ando(er to @*$A• Cell Reselection
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
Cell Reselection =8→
58Cell Reselect ion List
&CCH# . $$ UImin> . $$ Ioffset
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8SM MS starts 6CDMA measurements if #RLAC ,1Nsearch*2 for ;Nsearch* ?or
RLAC J ,1Nsearch*2 for ?Nsearch* :<
,f> for s!ita"le =+S %ell& for a 'eriod of s#
CP*CH RSCP J RLAC " ,DDNoffset
CP*CH .c0/o ≥ ,DDNmin
no 'riorities"etween
@*$Aneigh"ors
eas!rement ='dates#• RL*U* (al!e of the ser(ing %ell•
: least 6 strongest non ser(ing GS %ells
at least e(er s
%he%k
and
@*$A %ell
resele%tion
> $$ UIof f set
Nsearch*#01D 1D ?6a%wa5s7
,DDNmin#-20 X6D 2D +:= d
,ddNoffset#
sele%t alwa)s
(al!e is +infinit)2
Cell Re+selection Parameters• ?searc$EI and ?searc$EP define the threshold for non-G9RS?G9RS res'e%ti(el4 %a'a"le
=Es to meas!re 3G neigh"or %ells when a r!nning a(erage of the re%ei(ed downlink signal
le(el RLA *4 of the ser(ing %ell is "elow 0-74 or a"o(e -14 the threshold
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le(el RLAU*4 of the ser(ing %ell is "elow 0 74 or a"o(e 14 the threshold
[al!e 0 1 K 6 7 10 K 1< 1
dm - -< K -7< Alwa)s
-7 -7< -70 K -< Ne(er
• )DDE?offset and )DDE>PRSE3ffset the non-G9RS?G9RS res'e%ti(el4 %a'a"le =Es
add this offset to the RLAU* of the GS %ells After that the =E %om'ares themeas!red RS*9 (al!es of 3G %ells with signal le(els of the GS %ells
[al!e 0 1 2 3 K K 1< 1
dm -alwas -2 -2< -20 K 0 K 2< 2
A+!$ $e+ectirre$pecti(e o
RSCP (!+%e
Re$e+ect in c!$e RSCP@ GS# R;7e( &R7A:C'
B2?*
I R7A:C -4 )E $t!rt$3G me!$%rement$
)E !+!$ me!$%re$3G ce++$
I R7A:C @ -69 )E $t!rt$3G me!$%rement$
• (riggering of the 58 cell measurements
$e'ending on o'erator`s 2G X 3G interworking strateg 'arameter IUsear%hU, sho!ld 'lanned a%%ordingl
Measurements for =8 → 58 inter+s)stem cell reselection
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Configuration :
RLAC ,1Nsearch*21 ;Nsearch* B 2
8SM 58
*f caming in a 58 cell is riorit) then#
- *onfig!ration 1 is not a%%e'ta"le "e%a!se %am'ing on 3G in Cones with good GS %o(erage is not 'ossi"le
- *onfig!ration 2# %am'ing on 3G is not 'ossi"le in high> medi!m> & 'oor GS %o(erage- *onfig!ration 3# %am'ing on GS?3G is 'ossi"le and not %onstraint to other sstems %o(erage(herefore9 configuration 5 is the $est choice at e3enses of decreasing the $atter) lifetime of the terminal
Configuration =
RLAC J,1Nsearch*2
1 ?Nsearch* :< 2
,n the "est %ase> 3G
%ell meas!rements arerestri%ted to the%ondition#RLAU* le(el O X7dm
8SM
58
,n the "est %ase> 3G%ell meas!rements are'ossi"le when RLAU*le(el X7< dm
8SM
58
Configuration 5
RLAC ∞ 1alwa)s2E
1Nsearch*?2
Cell Re+selection .3amle# weaker 6CDMA/on 8PRS case
E%?NoRS*9?RLAU*
*dle Mode
*dle Mode
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RLAC
t
Serving 8SM Cell
/eigh$or 6CDMA Cell
se%
*ell re-sele%tion to @*$A
,DDNminF0-12 d
,DDNoffset F - d
Nsearch* F- dm
eas!rements starts ser(ing %ell4
inim!m I!alit Re/!irement for @*$A
.c0/;
RSCP
8SM +J 6CDMA8SM +J 6CDMA
CPICH RSCP J RLAC " ,DDNoffset&
CPICH +c;No ≥
,DDNmin
Cell Re+selection .3amle# stronger 6CDMA8PRS case for =8
→
58 inter+s)stem cell reselection
E%?NoRS*9?RLAU*
RLA PConnected Mode
Connected Mode
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t
Serving 8SM Cell 1est2
/eigh$or 6CDMA Cell
se%
Cell re+selection to 6CDMA
,DDNminF -20 d
,DD8PRSNoffset F d NsearchP
F - dm
RLAP
eas!rements starts ser(ing %ell4
inim!m I!alit Re/!irement for @*$A
.c0/;
RSCP
8SM +J 6CDMA8SM +J 6CDMA
Handover Control
• )ando(er +'es
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• ,ntra-.re/!en% )ando(er
• ,nter-.re/!en% & ,nter-Sstem )ando(er#
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5
Moved fr om HSPA " features
Note#
lind ,.-) RAN 224 & !lti-and Load alan%ing L RAN 21724are dis%!ssed in LE 8)S9A: feat!res & 'arameters;
LSHO# Load & Service $ased HO
• LSHO (arget# 'a%ancin of traffic "etween .CDMA fre"encies;%a5ers : "etween
>SM & .CDMA+ f =E t + f =E t th l
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• LSHO can $e configured to#+ransfer =E to
wanted laer "ased
on !sed Ser(i%e
+ransfer =E to other laer
in high Load "ased on
!sed Ser(i%e
AN$?
R
6oad (asedHando"er
6oad (asedHando"er
Ser"ice(asedHando"er
Ser"ice (asedHando"er
Constant monitoring o loading
'eriodical chec7ing
HOtrigger
s
Selection oconnections to
(e handedo"er
Measurements
5ecute
Hando"ers
Hando"e
rdecision
Load of the source cell 18SM or 6CDMA2
Load & Service $ased Handovers
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.//
J/
/
onl Service "asedhando(ers
Load "ased
hando(ers a%%ording toser(i%e 'riorities
P e r c e n t a g e c o m a r e
d t o t h e t a r g e t e d l o a d
•
.ffective integration of 8SM & 6CDMA• 6CDMA la)er management
ServicePreferred
s)stem0la)er
ConvE CS seech
ConvE CS transarent data
ConvE PS seech
ConvE PS R( data
8SM
8SM
6CDMA9 macro
6CDMA9 micro
Streaming CS non+transE 8SM
Streaming PS R( data 6CDMA9 micro
*nteractive PS /R( data 6CDMA9 micro
.3amle of service riorit) ta$le in R/C
ackground PS /R( data 6CDMA9 micro
'erator onl needs to
set this load threshold
Load & Service $ased Handover LSHO Control• R/C configuration arameters define a%%ording to se(eral ser(i%es whether LSHO %an "e
'erformed• RN*# SLH38se(ac<ro"ndPSNRTData@ SLH38seConvCSSpeec$ @ SLH38seConvPSRTData @
SLH38seConvPSSpeec$ SLH38seInteractivePSNRTData SLH38seStrea#CSNTData
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SLH38seConvPSSpeec$ @ SLH38seInteractivePSNRTData @ SLH38seStrea#CSNTData @
SLH38seStrea#PSRTData
Service t)e !. is using !sed handover t)e
*on(ersational> *S s'ee%h Eg Load & Ser(i%e )
*on(ersational> *S trans'arent data Eg Load & Ser(i%e )
*on(ersational> 9S s'ee%h Eg Load )
*on(ersational> 9S R+ data Eg Load )
Streaming> *S non-trans'arent data Eg Ser(i%e )
Streaming> 9S R+ data Eg Ser(i%e )
,ntera%ti(e> 9S NR+ data Eg NoneQ
a%kgro!nd> 9S NR+ data Eg NoneQ
Q defa!lt> onl R+ ser(i%es are handed o(er> "e%a!se NR+ $*) allo%ations are e5'e%ted to "e too short for these kinds of ) 'ro%ed!res
'erators ma ena"le ) also for the NR+ ser(i%es in %ase of longer $*) allo%ations
Range & $ef#/one 1;2K9
Load ) 14>
Ser(i%e ) 24>
Ser(i%e & Load ) 34
Load & Service $ased Handover LSHO
• Load $ased Handover 1LHO2
• Ser(i%e "ased )ando(er Ser()4
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• Ser(i%e "ased )ando(er Ser()4
•
Sele%tion of RR* %onne%tions & Ser(i%e 'riorit• *ongested +arget *ell & )ando(er de%ision
(riggers set " o'erator
(riggering of Load $ased Handovers LHOs
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T ot !+
i nt er A er en c e
NRT r e < e ct i on
r !t e
S pr e ! * i n c o * e
% $ !
e
H2 / + o i c !+
r e $ o %r c e % $ ! e )p+in
Don+in
T ot !+ p
o3 er
NRT r e < e ct i on
r !t e
(otalinterference
load
PS /R(caacit)re-uest
re%ection rate
Lack of DLsreading
codes
H6 0 logicalresourcelimitation
Ater ON5 o thereasons is
ul#lled cell is inthe
load (asedHando"er state
Hard (loc7ing
ratio o - BTS9WS'- AA6K
Hard (loc7ingratio o
- BTS9WS'- AA6K
9r5+otal O 9r5+arget : #HOPwr Offset 8L
9t5+otal O 9t5+arget : #HOPwrOffsetDL
RNC chec7s (ased on RRI inter"al&
(riggering of LHOs + (otal interference load
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LH3 P8r 3ffset U# F - 1 d relati(e to 9r5+arget
9t5+otal O 9t5+arget : #HOPwr Offset DL
#HOPwr3ffset D# F - 07 d relati(e to 9t5+arget
)eadroom for * triggering m!st "e %onsidered also
9t5+otalNon)S$9A O 9t5+arget)S$9A :
#HOPwr Offset DL
When HSD'A in use in the cell&
@*EL# -100> 01D +;E? d@*EL# -300> 01D +:E< d
(riggering of LHOs + PS /R( Caacit) Re-uest re%ection rate
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eas!rement Re'ort e>a4 *a'a%it Re/!est RN* internal *a'a%it Re/!est A* laer4
*a'aRe/ReRate=L FRee%tedRe/!ests*ell=L
All*a'a%itRe/!ests*ell=L : #HONRTTr%ffi4)%se#o%d 4
*a'aRe/ReRate$L FRee%tedRe/!ests*ell$L
All*a'a%itRe/!ests*ell$L : #HONRTTr%ffi4)%se#o%d 4
*a'aRe/ReRate=L O #HOC%p%ReR%teU#
*a'aRe/ReRate$L O #HOC%p%ReR%teD#RN* %he%ks "ased on 1 se% inter(als#
LHONR+(rafficaseLoad@*ELD 02> 1> :;
L)CaaRe%Rate!L0DL@*ELD 0100BD 1BD ?;T
C4
6-764@47
C 2 6-764@4@4@47C = 6-767
C = 64767
(riggering of LHOs + Lack of DL sreading codes
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C - 6-7647
C4 6-7 64@47
C 4 64764@47
C 2 64764@4@4@47
C 2 62764@4@4@47
C 2 6=764@4@4@47
C = 62767
C = 6=767
C = 60767
C = 61767
C = 6,767
C = 6:767
*ode rder0 S. 14
*ode rder1 S. 24
*ode rder 2S. <4
*ode rder3 S. 4
Reser(ationRateS*S.124 FReser(edS*
N!m"A(aila"leS*100 5
Reser(ationRateS.124 O #HOResR%teSC RN* %he%ks "ased on RR, inter(al#
L)ResRateS*@*ELD 0100B> 1B> @;T
(riggering of LHOs + H6 or logical resources are limited
• A load-"ased hando(er state is triggered d!e to )@ or logi%al reso!r%e @+S @S9 %a'a%it> ,!
AAL24 %ongestion in the %ell
• Hard $locking o%%!rs when a $*) set!' attem't fa%es %ongestion of the +S or ,!" AAL2
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WS' ca%acit IuB AA6K ca%acit
0 7ardBloc:inRatio Num(erOSam%lesHardBloc7ing
*AllSam%lesHWhuntDuringMeas'eriod 2 7ardBloc:inBaseoad,.// +
transmission %a'a%it
•
All sam'les# n&/7er of s&44essf&l &ns&44essf&l )TS or I&7 AA# tr%ns/ission 4%p%4it? h&nts inthe DCH set&p %tte/pts
LHOHardlockingaseLoad@*ELD 02> 1> :;
LHOHardlockingRatio@*ELD 0100B> 1B> <;T
• Load $ased Handover LHO state for an %ell triggered if load e5%eeds load thresholds
• Ea%h load trigger reason %an "e swit%hed O/ or O,, se'aratelD one trigger reason is enough to '!t the
%ell in LHO stateD LHO state over if all trigger reasons are "elow threshold
Processing of measurement results indicating Load
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• ,n Load $ased Handover state> RN* r!ns !. selection rocess for off+loading 6CDMA cell
• A(eraging 'eriod for st%rtin6 Load "ased )ando(er state is longer than for stoppin6
t
LHO state ZO/Z,ndi%ation "road%asted
LHO hase
A%ti(ation of new
L)s sto''ed
12
31
3<
3
Averaging@indowsO/@*ELD 060D 1D ; s O,,
re% :< s2
Averaging@indowsO,,
@*ELD 060D 1D < s
H)st(ime@*ELD
010D 1D = s
Dela)O,,@*ELD
02D 1D 5; s
LHOs
started
1 A(eraging@indows
for ;NM to start L) state
3 A(eraging@indows
for ;..M to sto' L) state
LHO state ZO,,Z,ndi%ation "road%asted
2 )steresis
+ime< +imer delaing
road%asting of L)
state ;..M indi%ation
9ro%essing of meas!rement res!lts indi%ating load
• Se'arate A(eraging@indows for N 14 ? .. 34 meas!rement• ,nterferen%e load# #HOWinSiJeON Interferen4e> #HOWinSiJeO$$ Interferen4e
• 9S NR+ *R# #HOWinSiJeON C%p%ReReR%te> #HOWinSiJeO$$ C%p%ReReR%te
O/# 060D 1D
; s O,, re% :< s2
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• La%k of S*s# #HOWinSiJeON ResR%teSC > #HOWinSiJeO$$ ResR%teSC
•)@ limit# #HOWinSiJeON H%rd)lo4>in6 > #HOWinSiJeO$$ H%rd)lo4>in6
• 24 )steresis time• ,nterferen%e load# #HOH?stTi/eInterferen4e
• 9S NR+ *R# #HOH?stTi/eC%p%ReReR%te
• La%k of S*s# #HOH?stTi/eResR%teSC
• )@ limit# #HOH?stTi/eH%rd)lo4>in6
• <4 $ela off • ,nterferen%e load# #HODel%?O$$ Interferen4e
• 9S NR+ *R# #HODel%?O$$ C%p%ReReR%te
• La%k of S*s# #HODel%?O$$ ResR%teSC
• )@ limit# #HODel%?O$$ H%rd)lo4>in6 02D 1D 5; s
010D 1D = s
O,,# 060D 1D < s
all 'arameters are @*EL 'arameters
Load & Service $ased Handover LSHO
• Load "ased )ando(er L)4
• Service $ased Handover 1ServHO2
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1 2
• Sele%tion of RR* %onne%tions & Ser(i%e 'riorit
• *ongested +arget *ell & )ando(er de%ision
Service ased Handover Procedure
Ser(i%e-"ased )ando(er a%tions are started eriodicall) in a %ertain %ell#
• Ser9HOPeriodInter$reD @*ELD 0120D 1D0 sD ;0MF off
• Ser9HOPeriodInterRAT* @*ELD 0 120D 1D0 sD ;0MF off
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WCDMA cell
) %andidates
Ser9HOPeriodInterRAT * @*ELD 0120D 1D0 sD 0 off
ServHOPeriod*nter,re-
ServHOPeriod*nterRA(@*ELD 0120 sD 1 sD ; F ff
Load & Service $ased Handover LSHO
• Load "ased )
• Ser(i%e "ased )
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• Selection of RRC connections & Service riorit)
• *ongested +arget *ell & )ando(er de%ision
Selection of RRC connections for LSHO
• =E shall "e sele%ted in the set of possi'%e candidates for the LSHO 'ro%ed!re#• ,. =E ,S /O( in preferred RAT or $ierarc$ica% .CDMA %a5er
• 9referred RA+ or hierar%hi%al @*$A laer ,S A[A,LALE
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• Preferred la)er is defined in the co#'ined service priorit5 %ist • 9referred laer is riorit) : la)er in the list
• 9riorit 2 & 3 laers are %an "e sele%ted in load "ased ) 'ro%ed!re
• Availa$ilit) of the target la)er de'ends on• $efinition of the target %ells in the neigh"or list
• Load of the target laer?%ell
@*$A a%ro
@*$A i%ro
GS
'SNRT
1 @*$Ami%ro
2 @*$A
3 GS
1 @*$Ama%ro
2 @*$A
3 GS
1 GS
2 GS
3 @*$A
.st
.st Knd
14 Ser(i%e?Load "ased )
24 Load "ased )
AMR'SRT
/um$er of !.s to $e selected
• /um$er of !.s that are selected in the %ertain %ell to Load $ased
Handover LHO 'ro%ed!re d!ring LHO state#
LHOnum$!.inter)re & LHOnum$!.interRAT
L)num$=Einter RA(
@*ELD 0 32D 1D ; /ot used
L)num$=Einter ,re-@*ELD 0 32D 1D ; /ot used
⇒ Load $ased HO O,,
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•/um$er of !. selected ea%h time Service $ased HO is started inthe %ell if 'ossi"le4#
ServHOnum$!.inter)re ServHOnum$!.interRAT
/um$er of !.s in CM due to SLHO• RN* %onfig!ration 'arameter @*EL4 defines how man =Es %an "e sim!ltaneo!sl in the * in
%ertain %ell d!e to SL) 'ro%ed!res
• MaxN"#'er8+c#SLH3
• * meas!rements d!e to load reason ha(e higher 'riorit than d!e to ser(i%e reason
• also> /!alit & %o(erage hando(ers %an steal %a'a%it from this %ategor if needed
•
eas!rement %a'a"ilit ,E of %ertain =Es %an indi%ate that * is not needed ie =E ha(e d!alre%ei(er %a'a"ilit
MaxN"#'er8+c#SLH3
@*ELD 032D 1D B
Ser()num$=Einter RA(
@*ELD 0 32D 1D :
Ser()num$=Einter ,re-@*ELD 0 32D 1D :
Load "ased hando(er L)
Load "ased hando(er L)
1 %onne%tions whi%h S-RN* is this RN*
1 %onne%tions whi%h S-RN* is this RN*
2 %onne%tions not 'erforming )
2 %onne%tions not 'erforming )
Selection of RRC connections for LSHO
Ser(i%e "ased hando(er Ser()
Ser(i%e "ased hando(er Ser()
1 %onne%tions whi%h S-RN* is this RN*
1 %onne%tions whi%h S-RN* is this RN*
2 %onne%tions not 'erforming )
2 %onne%tions not 'erforming )
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2 %onne%tions not 'erforming )
meas!rements
2 %onne%tions not 'erforming )
meas!rements
3 %onne%tions w?o 're(io!s L) attem'ts in
this %ell within a %ertain 'eriod
3 %onne%tions w?o 're(io!s L) attem'ts in
this %ell within a %ertain 'eriod
< NR+ %onne%tions lasting longer thanLH3#inNrtDc$A%%ocTi#e
< NR+ %onne%tions lasting longer thanLH3#inNrtDc$A%%ocTi#e
%onne%tions whi%h are not in referredRA( or 6CDMA hierarchical cell la)er
%onne%tions whi%h are not in referredRA( or 6CDMA hierarchical cell la)er
6 %onne%tions whi%h %a!se highest load in
the %ell de'ending on the Load trigger
6 %onne%tions whi%h %a!se highest load in
the %ell de'ending on the Load trigger
7 %onne%tions not re/!iring *om'ressed
ode
7 %onne%tions not re/!iring *om'ressed
ode
random sele%tion of remaining after ste's
1-7
random sele%tion of remaining after ste's
1-7
2 %onne%tions not 'erforming )
meas!rements
2 %onne%tions not 'erforming )
meas!rements
3 %onne%tions w?o 're(io!s Ser()
attem'ts in this %ell within a %ertain 'eriod
3 %onne%tions w?o 're(io!s Ser()
attem'ts in this %ell within a %ertain 'eriod
< RR* %onne%tions "eing in *ELLU$*)< RR* %onne%tions "eing in *ELLU$*)
6 %onne%tions not re/!iring
*om'ressed ode
6 %onne%tions not re/!iring
*om'ressed ode
7 random sele%tion of
remaining after ste's 1-6
7 random sele%tion of
remaining after ste's 1-6
%onne%tions whi%h are not in referredRA( or 6CDMA hierarchical cell la)er
%onne%tions whi%h are not in referredRA( or 6CDMA hierarchical cell la)er
A l w a s
onl if
RE
thandefined
n!m"er
of =E
RN*D 060D 1D 20 s
LSHO Phase < & (arget S)stem for LSHO• RR* %onne%tions whi%h are not in referred RA( or hierarchical 6CDMA la)er a%%ording to
co#'ined service priorit5 %ist • RN* %he%ks whi%h RR* %onne%tions are not in 'referred RA+ or hierar%hi%al @*$A laer
• RN* %he%ks if sele%ted target is a(aila"le and sele%ts those as a %andidates for the LHO 'ro%ed!re
S l i f did i f d i 3 h
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• Selection of candidates is 'erformed in 3 'hases#
Phase : X *onne%tions with Priorit) : target laer a(aila"le are sele%ted as a %andidates for the LSH3 rocedure if no first 'riorit %ases> no ser(i%e "ased ) is 'erformed4
Phase = X *onne%tions with Priorit) = target laer a(aila"le are sele%ted as a %andidates for the LH3
rocedure
Phase 5 X *onne%tions with Priorit) 5 target laer a(aila"le are sele%ted as a %andidates for the LH3
rocedure
• ,f e(en after 3rd 'hase an RR* %onne%tion %an not "e sele%ted> no ) 'ro%ed!res are 'erformed
and finall o(erload %ontrol of RN* shall 'erform its a%tions if needed
Com$ined
Service Priorit)
list
Com$ined
Service Priorit)
list
+arget Sstem
for SL)#
Preferred RA( or
Hierarchical
6CDMA la)er
Service riorit) Handover rofile ta$le in R/C
• RN* "ased Service priorit5 Handover profi%e t%7le is defined " RN* le(el and ser(i%e
• +he preferred RAT or preferred hier%r4hi4%l WCDMA l%?er of ea%h RR* %onne%tion in the
SL)
is determined a%%ording to 4o/7ined ser9i4e priorit? list information
• Co/7ined ser9i4e priorit? list RN* "ased4 defines the target sstem for the SL)
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RN* "ased Service priorit5 Handover profi%e t%7le is defined " RN* le(el and ser(i%e
s'e%ifi% 'arametersSer(i%e t'eSer(i%e t'e
*on(ersational> *S s'ee%h*on(ersational> *S s'ee%h
*on(ersational> *S-+ data*on(ersational> *S-+ data
*on(ersational> 9S s'ee%h*on(ersational> 9S s'ee%h
*on(ersational> 9S R+ data*on(ersational> 9S R+ dataStreaming> *S-N+ dataStreaming> *S-N+ data
Streaming> 9S R+ dataStreaming> 9S R+ data
,ntera%ti(e> 9S NR+ data,ntera%ti(e> 9S NR+ data
a%kgro!nd> 9S NR+ dataa%kgro!nd> 9S NR+ data
9referred sstem?laer 9referred sstem?laer
GSGS
@*$A@*$A
@*$A@*$A
@*$A@*$A@*$A ma%ro@*$A ma%ro
@*$A ma%ro@*$A ma%ro
@*$A mi%ro@*$A mi%ro
Not definedNot defined
ExampleSLH3profi%eConvCSspeec$
SLH3profi%eConvCSTdata
SLH3profi%eConvPSspeec$
SLH3profi%eConvPSRTdata
SLH3profi%eStrea#CSNTdata
SLH3profi%eStrea#PSRTdata
SLH3profi%eInteractivePSNRTdata
SLH3profi%e(ac<ro"ndPSNRTdata
Range & ste# ; 1/ot defined29 : 18SM29 = 16CDMA29 5 16CDMA micro la)er29 > 16CDMA macro la)er2
6CDMA La)ers
• 6CDMA macro cell# HCS riorities F 0 - 3• HCS riorit) ; is the highest 'riorit for a ser(i%e t'e that 'refers ma%ro
%ells
HCSEPRI3 )*S 9rio of Ser(ing *ell
@*ELD 07D 1D ;
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•
6CDMA micro cell# HCS riorities F < - 7• HCS riorit) ? is the highest 'riorit for a ser(i%e t'e that 'refers mi%ro
%ells
• +he main 'rin%i'le is that an attem't is made to hand o(er a %ertain
ser(i%e t'e to the %ell?laer whi%h has the highest a(aila"le 'riorit for it
• +he )*S 'riorit of the ser(ing %ell is determined " the RN9 'arameter
HCSPRIO> and the )*S 'riorit of an ,.-neigh"or %ell is determined "
the 'arameter AdiHCSpriorit? )9,4
AdjiHCS
priorit5 )*S 9rio of ,.-
neigh"or *ell
)9,D 07D 1D ;
.3amle
• +arget• 14 +o di(ert PS /R( traffi% to 6CDMA Micro la)er
• S#HOUseInter%4ti9ePSNRTD%t% F Load & Ser(i%e "ased ) 1 @*$A mi%rol
Co#'ined
service
priorit5 %ist
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S#HOUseInter%4ti9ePSNRTD%t% Load & Ser(i%e "ased )
•
S#HOprofileInter%4ti9ePSNRTd%t% F @*$A mi%ro laer• $i(ed: Ser9i4e H%ndo9er I" # ) to GS sho!ld not "e 'erformed
• 24 +o di(ert PS R( traffi% to 6CDMA Macro la)er
• S#HOUseInter%4ti9ePSRTD%t% F Load & Ser(i%e "ased )
• S#HOprofileInter%4ti9ePSRTd%t% F @*$A ma%ro laer
• $i(ed: Ser9i4e H%ndo9er I" # ) to GS sho!ld not "e 'erformed
• 34 +o di(ert AMR traffi% to 8SM la)er d!e to load
• S#HOUseCon9CSSpee4h F Load "ased )
• S#HOprofileCon9CSspee4hF GS
• Ser9i4e H%ndo9er I" # ) to GS sho!ld "e 'erformed
laer
2 @*$A
3 GS
1 @*$Ama%ro laer
2 @*$A
3 GS
1 GS
2 GS
3 @*$A
.3amle
1 @*$A mi%rolaer
2 @*$A
3 GS
1 @*$Ama%ro laer
2 @*$A
3 GS
1 GS
2 GS
3 @*$A
14 Ser(i%e?Load "ased )
24 Load "ased )
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@*$A
a%ro
@*$A
i%ro
GS
'SNRT
'SRT
AMR
.st.st Knd
24 Load "ased )
.3amle
1 @*$A mi%rolaer
2 @*$A
3 GS
1 @*$Ama%ro laer
2 @*$A
3 GS
1 GS
2 GS
3 @*$A
14 Ser(i%e?Load "ased )
24 Load "ased )
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@*$A
a%ro
@*$A
i%ro
GS
'SNRT
'SRT
AMR
.st1rd 1rd
Bloc7ed9Not a"aila(le
4
Load and Service $ased HO
• Load "ased )
• Ser(i%e "ased )
• Sele%tion of RR* %onne%tions & Ser(i%e 'riorit
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• Sele%tion of RR* %onne%tions & Ser(i%e 'riorit
• Congested (arget Cell & Handover decision
Load of the target 6CDMA cell 0 Congested target cell18SM or 6CDMA2
• RN* %he%ks the load of the target 6CDMA cell $efore a SLHO#• LH3 state stat!s information
• Re%ei(ed from the target %ell as a "road%ast sent inside the RN*• Stat!s of the e(ent-triggered %ommon load meas!rement if a(aila"le4 of the neigh"or
%ells %ontrolled " the $RN*
Adji Pena%t5
Ti#eNCH3 9enalt +ime for
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• RN* also %he%ks whether the SLHO enalt) time of that %ell is r!nning or not#
Adi Pena%t5 Ti/eNC HO
Cell can $e $locked in the SLHO rocedure• SL) are not 'erformed to the %ell that is "lo%ked in the SL) 'ro%ed!re
• +he e5a%t load of the target GS?G9RS %ell is not %he%ked " the so!r%e RN*in %ase of a ser(i%e or load -"ased inter-RA+ )
•
+arget S* %he%ks its own load sit!ation and ree%ts the hando(er if ne%essar
• ,f an HO to 8SM cell has failed ⇒ SL) 're(ented d!ring %ertain 'eriod• Relo%ation to the GS sstem is !ns!%%essf!l & RANA9# Relo%ation 9re'aration
.ail!re is re%ei(ed from the *N• +he 'eriod is defined with the 'arameter Ad6Pen%lt?Ti/eNCHO
• ,n 6CDMA *,+cells the enalt) is set if a HO of an t'e /!alit> %o(erage>
et%4 fails to reser(e reso!r%es from the target %ell• +he 'enalt time is defined with the 'arameter AdiPen%lt?Ti/eNCHO
@*$A %ell in /on-
Criti%al ))9,D 060D 1D 10s
Adji Pena%t5
Ti#eNCH3 )9,D 060D 1D 10s
Adj Pena%t5
Ti#eNCH3 )9GD 060D 1D 10s
LSHO# *,+HO decision
• .or ,.-LS)> the "est neigh"or %ell m!st satisf the following e/!ations#
-11-2D 1D +< dm-033D 1D 0
no defa!ltD eg 2< dm 21?2<?27?33 dm
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• n4 is the "est neigh"or %ell a%%ording to E%No
• RN* ranks the 'otential target %ells a%%ording to the riorit) levels
AdiPriorit?S#HO> if se(eral neigh"or %ells meet the e/!ations sim!ltaneo!sl
• +he +arget %ell m!st "e o!tside of the S) range of LS) "lo%ked %ells#• +he following e/!ation has to "e tr!e#
a4 A[EURS*9UN*ELL n4 O AdiMinRs4pNCHO n4 : ma50> AdiT(P8rDPCH n4 X 9UAJ4
"4 A[EUE%NoUN*ELL n4 O AdiMin"4NoNCHO n4 -2<0D 0D +:> d
Ad%iPriorit)SLHONeigh"or %ell 'riorit
for ser(i%e & load ,.)
)9,D 07D 1D ;
A[EUE%NoUN*ELL target4 - Adi"4NoOffsetNCHO target4 O A[EUE%NoUN*ELL "lo%ked4
Ad%i.c/oOffset/CHO
A$H,D 020D 0D B d
AdiE%NoffsetN*) defines the offset for the 'ro%ed!re
to ens!re that the =E doesnt 'erform an immediate S)to a "lo%ked %ell in the new fre/!en% laer
LSHO# *S+HO decision
• .or ,nter-RA+ LS)> the "est neigh"or %ell m!st satisf the following e/!ation#
A85 R3658 NCell*n, 0 &d'(inR,e;N)7 *n, 2 ma*/ &d'T,$-r(a,T) *n, -
-110-<7D 1D +< dm 0<3D 1D 55 dm
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n4 is the "est neigh"or %ell a%%ording to E%?No
• +he RN* 'erforms the inter-RA+ hando(er to the "est GS neigh"or target4 %ell as soon as the "est
GS neigh"or %ell meets the re/!ired radio link 'ro'erties
• RN* ranks the 'otential target %ells a%%ording to the 'riorit le(els Ad6Priorit?S#HO )9G4> if se(eral
neigh"or GS %ells meet the e/!ation at the same time
• S,* is alwas (erified for *S (oi%e ser(i%es• o"ile station %an sn%hronise to the GS %ell "efore the hando(er
• [erif the identifi%ation if 2 or more neigh"or GS %ells ha(e the same **) .re/!en%
• .or 9S ser(i%es S,* is (erified onl if m!lti'le neigh"ors with same **) fre/!en%
A85R3658NCell*n, 0 &d'(inR,e;N)7 *n, 2 ma*/; &d'T,$-r(a,T) *n,
'ma,
Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er
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• ,nter-.re/!en% & ,nter-Sstem )ando(er#
• GS ,S)
• Load & Ser(i%e "ased )ando(er
•
!lti-and Load alan%ing L RAN21724
• A''endi5
Moved from HSPA " features
Multi+and Load alancing MLrief descrition#
R=30 RAN 21724D o'tional RAN feat!reD RN* le(el li%ense
R=20 & earlier> ,ntra-?,nter-"and Redire%tions?)ando(er#Capa'i%it5 'ased redirection eg )S9A?non )S9A %a'a"le =Es → )S$9A?non )S9A4HSPA capa'i%it5 'ased I)H3 '!shes )S9A %a'a"le =Es to )S9A laersD
l d h k i t t ll " f )4
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no load %he%k in target %ells "efore )4Load 'ased H3 mo(es non-)S9A %allsD )S9A load %ant trigger load "ased )4
/ew0e3tended in R!5;* HSPA capa'%e Inter(and Handovers; Redirections+arget %ell sele%tion %an de'end on#
!. caa$ilit) & service9
fre-uenc) $and9
target0source cell load9
!. distance from source0target cellsE
Motivation & $enefits#
etter fre/!en% reso!r%e !tiliCation> dire%ting =E to different fre/!en% "ands?laers in m!lti-"and
networks Caa$ilit)9 service9 load & distance $ased HO are now ossi$le for HSPA" $etween
eEgE !M(S =:;; & ;;0@<; cells
+raffi% steering r!les are
'erator %onfig!ra"le
not longer "!ild into the S@4
DCH/HSPA cell (band X)
DCH/HSPA cell (band Y, RF1)DCH/HSPA cell (band Y, RF2)
DCH/HSPA cell (band Z) DCH/HSPA cell (band Z)
Multi+and Load alancing ML
RAN 24:2 Multi-band Load Balancing
ML R=30D RAN 21724 in%l!des RAN22 lind ,.) in RA set!' 'hase
• ML %an trigger in > different hases whi%h all %an "e a%ti(ated se'aratel#
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a
g
(%ind I)H3
at RA( set"pInactivit5
triered La5erin in
state c$aneMo'i%it5
triered
RA/==@
I)H3 to $i$er prioritised fre"enc5 %a5er in sa#e or different 'and
MBLBRABSetupEnabled MBLBInactivityEnabled MBLBStateTransEnabled MBLBMobilityEnabled
+ac$ t5pe can 'e ena'%ed on ce%% %eve% independent%5 on ot$ers@ '5 correspondin
so"rce ce%% .C+L para#eter 6ena'%in in taret ce%% not needed7*
for all# @*ELD ; 1Disa$led2> 1 Ena"led4
either first RA> or AR RA for a
=E whi%h alread has an NR+ RA "lind )ando(er
state transitions# *ELLU.A*)
=RAU9*) or *ELLU9*) → *ELLU$*)
Q doesnt in%l!de transition from RR* ,dle mode
AS# A%ti(e Set
ina%ti(it dete%ted for last
a%ti(e 9S NR+ radio "earer ,.) with * meas!rements
addition or remo(al of AS %ell
with different 'referred laerdefinition> SS*> fast mo"ilit et%
,.) with * meas!rements
ML# lind *,HO & La)ering in State Change modes
DCH/HSPA cell (band X)
DCH/HSPA cell (band Y, RF1)DCH/HSPA cell (band Y, RF2)
DCH/HSPA cell (band Z)
Connection setu RC(S ,ACH0PCH0!RA
→
DCH
Redire%tion?lind ,.) to
higher 'riorit laer %ell> at#DCH/HSPA cell (band Z)
M(L(RA(Set"p+na'%ed Ena"ling lind ,.) at RA
M(L(StateTrans+na'%ed Laering in State *hange
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lind *,HO & La)ering in State Change e5tends e5isting redirection scenarios
oth triggers !tiliCe "lind ,.)?redire%tion me%hanism w?o * a%ti(ation4
+arget %an "e ,.-neigh"or in same or different +S ? fre/!en% ? fre/!en% "and
,.-neigh"o!r m!st ha(e higher riorit) 1→
reference score2 than so!r%e %ell
L adds *,+RACH measurements to ha(e target cell info $efore $lind HO decisionQ
,ntra-fre/ RA*) meas!rement /!antit S,11?11"is?124 to "e modified from E%No to RSCP
RSCP is !sed as 'athloss e/!i(alen%e indi%ating =E 'osition within a %ell
RSCP 1(arget Cell2 m!st "e J )lindHORSCPThrT%r6et
*+S# *hannel +'e Swit%hingQ re/!ires =E Rel 6 or newer
Ena"ling lind ,.) at RA
Set!'@*ELD ; 1Disa$led2> 1 Ena"led44
g g
@*ELD ; 1Disa$led2> 1 Ena"led44
(%indH3RSCPT$rTaret )9,@*ELD -11-2D 1D +<
dm
RACHIntra)reMes?"ant
@*ELD .c/o 1;29 RS*9 14
ML# )S$9A *nactivit) or Mo$ilit) triggered modes
DCH/HSPA cell (band X)
DCH/HSPA cell (band Y, RF1)DCH/HSPA cell (band Y, RF2)
DCH/HSPA cell (band Z)
HSDPA traffic inactivit)
1instead C(S to ,ACH2
* ,.-) to higher 'riorit
laer %ell> on#
#
DCH/HSPA cell (band Z)
M(L(Inactivit5+na'%ed ,na%ti(it triggered
M(L(Mo'i%it5+na'%ed o"ilit triggered
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E5tending e(ent triggered s%enarios known from RAN16?)S9A *a'a"ilit ased )4 & adding
new mo$ilit) triggers
(arget cell %an "e an ,ntra-RN*> ,.-neigh"o!r %ell same?different +S> same?different fre/ "and4
whi%h is not in o(erload state14 ,t m!st ha(e higher riorit) 1→
reference score2 than so!r%e %ell
DCH or HSDPA *nactivit) triggered when for =Es last a%ti(e 9S NR+ $*)?)S-$S*) A*-d flow &%orres'onding =L 9S NR+ $*)?E-$*) A*-d flow %an "e released
Mo$ilit) triggered HO# Adding new %ell to AS E(ent 1A?1*4> with different 'referred laer def than the %!rrentl !sed Remo(ing %ell from AS E(ent 1?1*4 whi%h has 'referred laer def %!rrentl !sed " =E SRN* relo%ation %om'leted =E dete%ted to ha(e high mo"ilit !sing %riteria for =RAU9*)4 Ser(ing *ell *hange 'erformed to %ell with different 'reffered laer definition
14 Overload state is checked prior HO. *+S# *hannel +'e Swit%hing
,na%ti(it triggered
@*ELD ; 1Disa$led2> 1 Ena"led44
o"ilit triggered
@*ELD ; 1Disa$led2> 1 Ena"led44
Multi+and Load alancing ML)S$9A ina%ti(it or o"ilit triggered modes
RA
Setu *nactivit)
M(L(RA(Set"p+na'%ed M(L(StateTrans+na'%ed M(L(Inactivit5+na'%ed M(L(Mo'i%it5+na'%ed
Mo$ilit) .ast o"ilitState transition
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Setu *nactivit)
detected
Mo$ilit)
detected
.ast o"ilit
dete%ted
State transition
to CellDCH
14 +arget %ell is so!r%e %ells A$H, with)lindHOT%r6etCell set to ;Ena"ledM
24 *ells in inter-fre/!en% meas!rement re'ort
PrefLa)er6eight
and6eight
RSCP6eight
Load6eight
own arameters for ,M !.
Load6eight
P r e f e r e n c e S c o r e
lind HO La)ering
*,HO with CM
Nualit) Criteria checking
(%indH3TaretCe%% A$H,D ; 1Disa$led2> 1 Ena"led4
Multi+and Load alancing ML.re/!en% laer 'riorit - 9referen%e S%ore 1?4
Ea%h %arrier & fre/!en% "and4 !sed in RNS %an "e differentl 'rioritised *arrier?fre/!en% laer
'riorit reference score4 %an "e effe%ted "#
PrefE ,re-E weight# Sele%tion of %arrier 'referred for %onfig!rations → =E %a'a"ilit & !sed RA
and weight# RN* le(el sele%tion of one 'referred fre/!en% "and
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RSCP weight# )igh &?or low "and 'referen%e de'ending on =E distan%e RS*94 from so!r%e %ell Load weight# )S$9A %ell or %arrier ? fre/ laer load 'referen%e load "alan%e ? o(erload4
Ea%h fa%tor re'resented " weight is A %onfig!ra"le *andidates for L are ,. neigh"o!rs or
fre/!en% laers higher 'rioritised then so!r%e %ell or %!rrent laer > in "ands s!''orted " =E
Freq layer priority
( re!erence Score "# re!erred Freq
$eig%t
Freq Band
$eig%t
RS&
$eig%t Load
$eig%t ' ' '
or
LaySel)eig%tre!Layer
or
LaySel)eig%tBand
or
LaySel)eig%tRS&
or
*#LaySel)eig%tLoad
Not considered or non!HSPA "#s
or ot$er %it$ CS RA& in DCH cellNot considered or ast
'oin "#s
Multi+and Load alancing ML.re/!en% laer 'riorit - 9referen%e S%ore 2?4# 9referred .re/ weight
!. Caa$ilit)Priorit) Order Service0RA arameters included to P,L o$%ect
Ea%h %om"ination 8=E %a'a"ilit X =sed?Re/!ested Ser(i%eM ma "e steered " 'erator to 'referred fre/!en%
Eg# $* )S$9A %a'a"le =E with NR+ RA ma "e transfered to fre/!en% with $* )S$9A %onfig!red %ells
9referen%es are defined in new o$%ect P,L 9referred .re/!en% Laer4D
!' to %arriers 'er 8=E %a'a"ilit-=sed Ser(i%eM 'air 9refLaerJJJb1-c F 'referred R. fre/
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Priorit) Order Service0RA arameters included to P,L o$%ect
*S [oi%e (er )S9A Pref#%?erCSHSNRT Pref#%?erCSHSStr Pref#%?erCSHSAMR Pref#%?erCSHSAMRNRT
$* )S$9A : , Pref#%?erDCMINRT Pref#%?erDCMIStr Pref#%?erDCMIAMR Pref#%?erDCMIAMRNRT
$* )S$9A QPref#%?erDCHSDNR T
Pref#%?erDCHSDSt r
Pref#%?erDCHSDAM R
Pref#%?erDCHSDAMRNR T
,QQ Pref#%?erMIMONRT Pref#%?erMIMOStr Pref#%?erMIMOAMR Pref#%?erMIMOAMRNRT
)S$9A 6<IA Pref#%?er.2GAMNRT Pref#%?er.2GAMStr Pref#%?er.2GAMAMR Pref#%?er.2GAMAMRNRT
.-$9*) Pref#%?er$DPCHNRT Pref#%?er$DPCHStr Pref#%?er$DPCHAMR Pref#%?er$DPCHAMRNRT )S9A Pref#%?erHSPANRT Pref#%?erHSPAStr Pref#%?erHSPAAMR Pref#%?erHSPAAMRNRT
)S$9A Pref#%?erHSDPANRT Pref#%?erHSDPAStr Pref#%?erHSDPAAMR Pref#%?erHSDPAAMRNRT
R Pref#%?erRKKNRT Pref#%?erRKKStr Pref#%?erRKKAMR Pref#%?erRKKAMRNRT
PrefLa5erRBBNRT 'referred R. fre/ for =E
%a'a" X RA %om"ination
9.LD 01633D 1D ;
eEgEPreferred #%?er
8ei6ht
PrefLa5erFFF b1-c
F 'referred R. fre/
- not defined
-
- 6R) fre n"#'er7 La5Se%.ei$tPrefLa5er
La5Se%.ei$tPrefLa5er
9.LD 010000D 1D ; 1not used2 :;;;
Multi+and Load alancing ML.re/!en% laer 'riorit - 9referen%e S%ore 3?4# .re/ and weight
'erator %an 'romote one fre/!en% "and among !sed " neigh"o!rs of so!r%e %ell +he ,re- and
weight of %andidate %ell %arrier is determined from its a"sol!te R. n!m"er *andidate %ells in
'romoted "and are assigned with non-Cero weight# LaSel@eightand
Prefer(and)orLa5erin if an) $and referred Prefer(and)orLa5erin
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Freq Band
$eig%t
and*D
,re-uenc) $and 1DL range2
! R. "and , 21102170)C4 ? ,+
R. "and ,, 13010)C4 ? 9*S
0 and ,,, 1010)C4 ? $*S
2 and ,[ 211021)C4 ? A@S
3 and [ 6<)C4 ? *LR
. and [, 7)C4
and [,, 2620260)C4 ? ,+-E
and [,,, 260)C4 ? GS
11 K
!! and J, 1<71<)C4
-
La5Se%.ei$t(and
9.LD 010000D 1D ; 1not used2
Preferred !M(S $and
RN,D 01D 1D ; 1no $and refE2
if an) $and referred→
Prefer(and)orLa5erin
⇒ ,re-Eand6eight of 'ref "and fre/4 La5Se%.ei$t(and
Multi+and Load alancing ML.re/!en% laer 'riorit - 9referen%e S%ore <?4# RS*9 weight
'erator %an 'rioritise ,.) to lower?higher "and in %ase RS*9 is "elow?a"o(e defined thresholds
RS*9 of so!r%e %ellQ is !sed as indi%ation of =E distan%e from so!r%e %ell *lose =E %an "e mo(ed
to higher "and smaller %ell range4> while distant =E to lower "and to im'ro(e radio link sit!ation
(%indH3RSCPT$rA'ove
9.LD -121-2D 1D ; dm not done4
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RSCP
wei$t
+ Source cell& (est RSC' cell in RACH Intra-rere%ort
Low and 1 ,:2
High and 1,=2
=:
if RSCP 1Source Cell2 U (%indH3RSCPT$rA'ove
⇒ RSCP6eight 1higher $and fre-Es2 La5Se%.+i$tRSCP
if RSCP 1Source Cell2 V (%indH3RSCPT$r(e%ow
⇒ RSCP6eight 1lower $and fre-Es2 La5Se%.+i$tRSCP
RSCP oso*rce cell+
La5Se%.ei$tRSCP
9.LD 010000D 1W ; 1not used2
(%indH3RSCPT$r(e%ow
9.LD -121-2D 1D +:=B dm not done4• +hese 'arameters %an "e !sed to o'timiCe
fre/!en% !sage in %ase of %o-lo%ated
m!lti-"and %ells#
X =Es %lose to +S allo%ated to a high "and
X Low "and %a'a%it !sed for distant =Es RSCP6eight a''lied onl to following e(ents#• lind ) in RA Set!' 'hase• State transition to *ellU$*) state
Multi+and Load alancing ML.re/!en% laer 'riorit - 9referen%e S%ore ?4# Load weight
+he Load weight is !sed to avoid *,HO to more loaded cells or direct traffic to $alance the
load +he weight is de%ided "ased on mean )S$9A 'ower 'er )S$9A NR+ =ser
HSDPA wr er/R( user F6G
!nusedDL wr
HSPAload lev
La5Se%LowLoadPref
9.LD ; 1Disa$led2> 1 Ena"led4
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4, es :
4, Pwr 4- es =
4- Pwr 0&2 es 5
0&2 Pwr 2&2 es >
2&2 Pwr 4&= es <
4&= Pwr -&/ es B
-&/ Pwr -&1 es ?
-&1 Pwr -&2= es @
X X
HSPA over%oad /o =:
%oad "n<nown ornon HSDPA ce%%
/o ==
Load wei$t
#o8#o%dPreferen4e F 1 1000
HSPA%oa
dLeve%
%ow 6 4
G : 7
es /o
La5Se%.ei$tLoad
9.LD 010000D 1D ; 1not used2
La5Se%.ei$tLoad O 622 G HSPALoadLeve% 7 O LoadLoadPreference
- if La5Se%.ei$tLoad -
( )
sTHSDPAuser NumberOfNR
yering ForHSDPALaCellWeight P PerUser HSDPApoer NRTHSDPA
*=
Ce%%.ei$t)orHSDPALa5erin
6C.LW ;E;:EE:W ;E;:W :
Source or target cell
result or freq. layer
average, depending on
MBLB mode
YHSPAload stateZ
Multi+and Load alancing ML.ast o"ilit =E
=E dete%ted to "e fast mo(ing =E with same me%hanism than for =RA-9*) tooman mo"ilit e(ents 'er time4
,n *ELLU$*) state> =E lo%ation is known in %ell le(el and hando(er 'ro%ess %an%al%!late the (elo%it of the =E " AS %hanges needed for the =E
=E is fast mo(ing# if n!m"er of %om'lete AS %hanges )ast8+T$res$o%d d!ring
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time 'eriod )ast8+Period
=E fast mo(ing ⇒ reference score is %al%!lated taking into a%%o!nt
onl the referred la)er definition for fast mo(ing =E#
Pref%a5er)astMov8+PS is !sed for 9S> and
Pref%a5er)astMov8+CS is !sed for *S
fast mo(ing =E %an ha(e onl 2 'referred fre/!en%ies in 'riorit order
)ast8+Period
@*ELRN,D 0160D 1D :; s
)ast8+T$res$o%d
@*ELRN,D 260D 1D 5
AS# A%ti(e Set
Pref%a5er)astMov8+PS \2
9.LD 01633D 1D +;
Pref%a5er)astMov8+CS \1
9.LD 01633D 1D +;
\1 defines the 'referred laers for fast mo(ing =E with AR RA or other *S
RA> 01 streaming RA : 03 NR+ RAs4 allo%ated\2 defines the 'referred laers for fast mo(ing =E with 03 9S NR+ RAs4 :
01 9S streaming RA allo%ated No AR RA or other *S RAs e5ists4
Multi+and Load alancing ML9referred .re/!en% Laer 9.L
• 9referred .re/!en% Laer 9.L4 o"e%t is 'ointed to " ea%h @*EL
• !lti'le 9.L o"e%ts 04 %an "e definedD so different @*EL %an ha(e
different 9.L 'arameter sets
• )owe(er> if there is few too man P)LIdentifier assigned to same
R/C
L introd!%es new 9.L o"e%t within the RN* data "!ild
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geogra'hi%al area> it ma %a!se 'ing 'ong d!e the loo'ing in 'referen%edefinitions
P)LIdentifier
P)LIdentifier
6C.LP)LIdentifier
6C.L
6C.L
6(S
P,L set i
P,L set %
?
P,L Parameters
• )lindHORSCPThrA7o9e
• )lindHORSCPThr)elo8
•#%?Sel#o8#o%dPref
•#%?SelWei6ht#o%d
• #%?SelWei6ht)%nd
•#%?SelWei6htPref#%?er
•#%?SelWei6htRSCP
•P$#$%stMo9U"CS
•P$#$%stMo9U"PS
• P$##ist(((AMR
• P$##ist(((AMRNRT
• P$##ist(((NRT
• P$##ist(((Str
RS*9 a"o(e?
"elow thresholds
@eight for 'referred laer>and> RS*9 & Load
9referred .re/!en% laer List
for .ast o(ing =Es *S & 9S4
9referred .re/!en% laer List
for different t'e of =E
%a'a"ilities ,> R et%4J
Multi+and Load alancing MLL ? 9.L E5am'le X RS*9 @eight
1 =E is mo(ed to higher $and when ath loss of serving cell is low
• RSCP;S4ell< E )lindHOThrA7o9e ;e161 d)/<1 )igher fre/!en% "and> whi%h get non-Cero
RS*9 weight (al!e #%?SelWei6htRSCP 04> are 'referred
2 =E is mo(ed to lower "and when 'athloss of ser(ing %ell is high
• RSCP;S4ell< L )lindHOThr)elo8 ;e161 K d)/< Lower fre/!en% "and> whi%h get non-Cero
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RS*9@eight is a''lied onl to the following e(ents#
• lind ) in RA Set!' 'hase
• State transition to *ellU$*) state
RS*9 weight (al!e> are 'referred
Low and 1 ,:2
High and 1,=2
=:
RSCP oso*rce cell+
RSCP Fi
!n*preerre* Blind7RS)$Thr&bo;e
Blind7RS)$ThrBelo-
RSCP F+o!n* preerre*
cell*.,
cell*K,
:
=
*ellUf1 fre/ 'riorit F0
*ellUf2 fre/ 'riorit F100
*ellUf1 fre/ 'riorit F100
*ellUf2 fre/ 'riorit F 0
So"rce ce%% 6f27
WC"#: P)LIdentifier = 3
)lindHOThrA7o9e=
)lindHOThr)elo8= K
#%?SelWei6htRSCP=!,,
#%?SelWei6htPref#%?er=,
#%?SelWei6ht)%nd=,
C ' I C H R
S C '
Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er
•
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,nter-.re/!en% & ,nter-Sstem )ando(er#
• GS ,S)
• Load & Ser(i%e "ased )ando(er
•
!lti-and Load alan%ing L RAN21724• A''endi5#
• ,nterworking with GAN• ,nterworking with L+E• S-RNS Relo%ation
!(RA/ 8A/ *nterworking
• ,nter-RA+ )ando(ers for (oi%e %alls# =+RAN GAN
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• modes# GERANUonl> GERANU'referred> GANUonl> GANU'referred• a GAN "road%ast **)> ** & N** same (al!es in o'erator network4
!(RA/ 8A/ *nterworking
RR*# RR* *onne%tion Set!' Re/!est
RR*# RR* *onne%tion Set!'
RR*# RR* *onne%tion Set!' *om'lete
=E informs a"o!t 8A/
caa$ilities=E is in ;GAN 'referred odeM
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[oi%e *all Set!'
RR*# eas!rement *ontrol
.vent 5A set!'
N6301
.vent 5A is defined in +S 2331#
+he estimated /!alit of the %!rrentl !sed =+RAN
fre/!en% is "elow a %ertain threshold and the estimated
/!alit of the other sstem is a"o(e a %ertain threshold
,E in RR*#EAS=REEN+ *N+RL message#
A RL*> E(ent +rigger
.vent 5A#
=+RAN I!alit threshold
A/D
I!alit other sstem O threshold
!(RA/ 8A/ *nterworking !(RA/ to 8A/ HO=E identifies GAN Network & informs RN*
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!(RA/ 8A/ *nterworking 8A/ to !(RA/ HO
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• =+RAN 9arameters RN* "e%t4
• 8A/etwAR,C/ • =+RAN-to-GAN hando(er method makes !se of an R. %hannel n!m"er AR.*N4 and ase Station ,dentit
*ode S,*4 to identif GAN %ells +he 'arameter indi%ates the R. %hannel n!m"er allo%ated for the GAN %ells
!(RA/ 8A/ *nterworking Parameters
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*ode S,*4 to identif GAN %ells +he 'arameter indi%ates the R. %hannel n!m"er allo%ated for the GAN %ells• Range# 01023> ste' 1D $efa!lt# 63 not defined4
• 8A/etwCC • =+RAN-to-GAN hando(er method makes !se of an R. %hannel n!m"er AR.*N4 and ase Station ,dentit
*ode S,*4 to identif GAN %ells ase Station ,dentit *ode is %om'osed of Network *olor *ode N**4 andase Station *olor *ode **4 +he 'arameter indi%ates the ** allo%ated for the GAN %ells
• Range# 07> ste' 1D $efa!lt# 2 not defined4
• 8A/etw/CC• =+RAN-to-GAN hando(er method makes !se of an R. %hannel n!m"er AR.*N4 and ase Station ,dentit
*ode S,*4 to identif GAN %ells ase Station ,dentit *ode is %om'osed of Network *olor *ode N**4 andase Station *olor *ode **4 +he 'arameter indi%ates the N** allo%ated for the GAN %ells
• Range# 07> ste' 1D $efa!lt# 2 not defined4
Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er
•
,nter .re/!en% & ,nter Sstem )ando(er
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,nter-.re/!en% & ,nter-Sstem )ando(er
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5#• ,nterworking with GAN• ,nterworking with L+E• S-RNS Relo%ation
L(. *nterworkingConcet
• L(. *nterworking# RAN 2067 "ased on 3G99 RelD +S 230<4- 'tional .eat!re AS@4D RN* Li%ense Pe re/!ired
- re/!ires Rel =ED no re/!irements for =+RAN
• 58 to L(. cell reselection in idle mode> *ELLU9*) & =RAU9*) is s!''orted 9a%ket Session
)ando(er from L+E to 3G is s!''orted as well
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Reselection of the !.s
%an "e %ontrolled "
a''ling higher riorities
to L(.
L(.CellReselecPS*SHO
indi%ates if %ell re-sele%tion from@*$A to L+E for idle & %onne%tedmode *ellU9*) >=RAU9*)4 =Esand in%oming 9S ,S) from L+E isena"led in the %ell or not
@*ELD ; 1Disa$led2> 1 Ena"led4
R/6 Parameter O$%ect Structure in R!=;2 new 9arameter "e%ts#
• )9L ma5 10 54
• A$HL ma5 54
HOPL
• AdLA"s9rio*ellResele%
@+S
RN*@SL*
**
)9G
)9,
,=R
)9L
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AdLA"s9rio*ellResele%• AdLIr5le(minE=+RA
• AdL+hreshigh
• AdL+hreslow
• )9L,d
AD7L• A$HL*hangerigin
• A$HL,d
• AdLEAR.*N• AdLeasw
• )o'L,dentifier
6C.L• A$HL+imeStam'
• A"s9rio*ellResele%
• L+E*ellResele%9S,S)
• S,1*om'mask,nfo
• S'rioritsear%h1
• S'rioritsear%h2
• +hreshser(low
R/C• E=+RAdete%tion
• S,19riorit
@*EL
.*S
.*,
.*G
@L*SE
*
)9,
)9S
A$HS
A$H,
A$HG
@ANE
@SG
ne-to-one
ne-to-man
,=*S
,=9S
A$HL
A$H$
L(. *nterworking Parameters
L+E
)9L# AdLA"s9rio*ellResele%
A$HL# Ir5le(minE=+RA
A$HL# AdLEAR.*N
A$HL# AdLeasw
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L+E
3G
@*EL# A"s9rio*ellResele%
@*EL# S'rioritsear%h1
@*EL# S'rioritsear%h2
@*EL# +hresser(low
)9L# AdL+hreslow )9L# AdL+hreshigh
A$HL# AdLeasw
L+E Laer 9rioritlower higher
6CDMA Cell S)stem *nformation lock :• new 3G99 S, in 3G @*$A %ell# S,1
• S, 1 'ro(ides# Ser(ing @*$A %ell & ,RA+ %ell information for E-=+RA
• RN* %om'iles S, 1 and 'ro(ides to @+S for Ss,nfo "road%ast
• 9riorit for S, 1 %an "e set with RN* le(el 'arameter# Si:Priorit)S,1 'rioritD !sed " RN*
s%hed!ling algorithm to gi(e
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g g g're%eden%e to the S,
1 F highest 'riorit< F lowest 'riorit
RN*D 1> 2> 5> >D def# 59 >
A$sPrioCellReselec Ser(ing @*$A %ell a"sol!te 'riorit in a"sol!te 'riorit "ased %ell-resele%tion
A"sol!te 'riorit "ased %ell re-sele%tion 'ro%ed!re for idle & %onne%ted mode =Es is !sedin %ase of %ell resele%tion to L+EQ [al!e 0 F lowest a"s 9rioD 7 F highest a"s 9rio
@*ELD 07> 1 D ;
Ad%LA$sPrioCellReselec a"sol!te 'riorit le(el of the ,nter-RA+ L+E neigh"or fre/!en% in the
a"sol!te 'riorit "ased %ell re-sele%tion 'ro%ed!re [al!e 0 F lowest
9rioD 7 F highest 9rio
)9LD 07> 1D :
La)er riorities
Q ,f a"sol!te 'riorit "ased %ell resele%tion not !sed⇒ 'arameter not needed
not a''li%a"le for inter-fre/!en% & GS %ell resele%tion
S+criteria & measurement managementSer(ing %ell
higher 'rio
,RA+ %elllower 'rio
,RA+ %ell
Resele%t to
higher 'riorit
,RA+ %ell
"etter %ell le(el
Resele%t to
lower 'riorit
,RA+ %ell
Reselection from 58 to L(.#• *ell resele%tion to % 4ell on % hi6her %7sol&te
priorit? l%?er than the %am'ed fre/!en% if#
Sr3levnonServingCell93 J (hresh39highK
• *ell resele%tion to % 4ell on % lo8er %7sol&te
priorit? l%?er than the %am'ed fre/!en% if#
• Sr3levServingCell (hreshserving9low OR
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threshold 5> high
threshold 5> low
+hresSer(ing> low
Sintrasear%h
worse %ell le(el
g g9
S-ualServingCell ; A/D
• Sr3levnonServingCell93 J (hresh39lowK
Q d!ring a time inter(al +resele%tion\1 if a"sol!te 'riorities are a''lied
(hresservlow
@*ELD 062 dD 2 dD ; die# E*?N0 -1 d
SsearchRA(020D 2D > die# E*?N0 -1< d
Ad%L(hreshigh062D 2D ; d
Ad%L(hreslow062D 2D ; d
=E m!st "e informed a"o!t
the ada%ent L+E fre/!en%#
Parameters Ad%L.AR,C/ defines the E-=+RA AR.*N of the neigh"oring $L E-=+RA fre/!en%
A$HLD 063> 1D defa!lt# none
Ad%LMeasw meas!rement "andwidth information %ommon for all neigh"oring E-=+RA %ells on the
%arrier fre/!en%D indi%ate the n!m"er of reso!r%e "lo%ks o(er whi%h the =E %o!ld
meas!reA$HLD Range & Ste'# B 1 2 0 7 100
,n L+E the $L "andwidth is
fle5i"leD the =E m!st know the
@ to meas!re the /!alit ofL+E fre/!en%ies#
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A$HLD Range & Ste'# B> 1> 2> 0> 7> 100
AR.*N# A"sol!te Radio .re/!en% *hannel N!m"er
/ L+E fre/!en%ies#
.inal %riteria to resele%t to higher
'riorit ,RA+ %ell L+E fre/!en%4
Ad%LNr3levmin.!(RA minim!m re/!ired RSR9 le(el whi%h the meas!rement res!lt of the E-=+RA? L+E
neigh"or %ell m!st e5%eed "efore the %ell re-sele%tion "e%omes 'ossi"le
)9LD -1<0-<< dm> 1 dmD - 1<0dm
(hreshservlow threshold !sed in the r!les for %ell resele%tion when a"sol!te 'riorities are !sed ,ts'e%ifies the limit for Sr5le( in the ser(ing %ell "elow whi%h the =E ma 'erform %ell
resele%tion to a %ell on a lower a"sol!te 'riorit laer
@*ELD 062 d> 2 dD 0 d
.!(RAdetection
defines if the =E in idle mode ma dete%t the 'resen%e of a E-=+RA %ell and re'ort to
NAS for dis'la indi%ation onl
RN*D 0 false4> 1 tr!e4D defa!lt# ; 1false2
RN* %ontrols L+E interworking
for the =Es
,f S-%riteria indi%ates @*$A %ell
/!alit "elow Ssera%hRA+ & "elow+hresser(low> =E ma resele%t to
lower 'riorit ,RA+ %ell
Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er
•
,nter-.re/!en% & ,nter-Sstem )ando(er#
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,nter .re/!en% & ,nter Sstem )ando(er#
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5#• .emto )ando(er *ontrol• ,nterworking with GAN• ,nterworking with L+E• S-RNS Relo%ation
• +he '!r'ose of .emto )ando(er *ontrol is to 're(ent
hando(er attem'ts to %ells not s!''orting %onne%ted
mode mo"ilit
• Altho!gh the me%hanism to disting!ish neigh"o!r %ell
definition for idle mode & %onne%ted mode is generi%> it
!(RA
/ cell.ntrance
.nterrise
femtocell
,emto Handover Control
New slide
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g >is 'rimarl introd!%ed to a(oid !ns!%essf!l ) attem'ts
from =+RAN to .emto RAN residential and enter'rise
inner femto%ells4
• $ifferentiation "etween idle and %onne%ted mode
neigh"o!rhoods %an "e made for intra-fre/!en%> inter-
fre/!en%> inter-sstem 2G ada%ien%ies altho!g thelatter is not a''li%a"le to femto ?there are no GS femto
RAN im'lementations4
• E(er ada%en% %reated in RN* data"ase %an "e for#
a4 idle mode onl> or "4 %onne%ted mode onl or %4 "oth
idle and %onne%ted modes
,86
Residential femtocell
9re(enting femto residential ada%en%ies in *ELLU$*)
RN* %onfig!ration data"ase#
RNC-1/WBTS-3/WCEL-10/ADJ x -+
Adj x SIB=For CELL_DCH mea! Adj x CI=&I,+
6(S5
1R/C+:2
S,11%ell,nde5
*,
0 *,$2
1 *,$3
1
Ada%en% A$H5-1 *,$24 not
%onsidered " )ando(er *ontrol
,emto Handover Control
New slide
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j
Nr"Ho# x Ide$"%&%er='
R"Ho# x Ide$"%&%er=(
)
RNC-1/WBTS-3/WCEL-10/ADJ x- '
Adj x SIB=For SIB o$*+
Adj x CI=&I,
Nr"Ho# x Ide$"%&%er='
R"Ho# x Ide$"%&%er='
)RNC-1/WBTS-3/WCEL-10/ADJ x- '
Adj x SIB=For SIB , CELL_DCH mea
Adj x CI=&I,.
Nr"Ho# x Ide$"%&%er='
R"Ho# x Ide$"%&%er=(
! Te a.a%*a*e .a*e are For SIB only =%$2*ded o$*+ %$ SIB meae4 For SIBbis only =%$2*ded o$*+ %$ SIB11% meae4 For &ELL/,&0 1eas=%$2*ded
%$ CELL_DCH o$*+4 For SIB 2 &ELL/,&0 1eas=%$2*ded %$ SIB meae a$d %$ CELL_DCH4 For SIBbis 2 &ELL/,&0 1eas=%$2*ded %$ SIB% , CELL_DCH
x "a$d &or 5S4I467
C+LLE)ACH 8+@
Id%e Mode
8+ in C+LLEDCH W ! L" # $
M ! % S
& '
L ( C , D 1
, C , D -
S,12%ell,nde5
*,
0 *,$3
S ) B
# # (
e l l ) *
+ .
,
e l l ) *
+ 1
S ) B #
(
e l l ) *
+ .
Note#
if ada%ent %ell definition is
for idle mode resele%tion
onl femto residential
de'loment does not
s!''ort *ELLU$*)
hando(ers nor *ELLU.A*)
resele%tions4 then )95
'arameters for R+ and NR+"earers shall "e the same
*,$2 %ell is .emto
Generi% *ell Neigh"o!r
definition for idle mode
resele%tion onl4
Handover Control
• )ando(er +'es
• ,ntra-.re/!en% )ando(er
•
,nter-.re/!en% & ,nter-Sstem )ando(er#
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/
• GS ,S)
• Load & Ser(i%e "ased )ando(er
• !lti-and Load alan%ing L RAN21724
• A''endi5#• .emto )ando(er *ontrol• ,nterworking with GAN• ,nterworking with L+E• S-RNS Relo%ation
*nter+R/C Mo$ilit)
• ost of the times the =E hands o(er among @+S "elonging to the same RN* ,ntra-RN* )ando(ers4
• )owe(er> what ha''ens when the target @+S is !nder a different RN*W• 3G99 gi(es two different o'tions to handle inter-RN* mo"ilit in @*$A
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• An%horing# the =E will "e %onne%ted to the *N (ia the ;oldM RN* ,t is re/!ired ,!r %onne%tion"etween the RN*s in(ol(ed
• SRNS relo%ation# the =E will "e %onne%ted to the *N (ia the ;newM RN* ,t is the Nokiaim'lemented method
+, SRNS relocation needs CN su%%ortL U5 su%%ort mandator in1:''
CN
RNCRNC
I% I%
I%r
CN
RNCRNC
I% I%
I%r
AncorinCN
RNCRNC
I% I%
I%r
CN
RNCRNC
I% I%
I%r
SRNS re+oc!tion '
RNCRNC RNC
RNC
SRNSRe+oc!tio
n
SRNSRe+oc!tio
n
SRNSRe+oc!tio
nAfter last $ranch
from SR/C has $eendeleted 1event :$29
and all RLs $elong tothe DR/C9 theRelocation is
triggered
SR/S Relocation
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RNCRNC
RNCRNC
RNC
RNC
RNC
SRNS Re+oc!tio
C!++ i++ *rop
SRNC!ncore*
Ancor RNC&SRNC'
SRNS Ancorin
!. not involved SR/C Relocation for R(
SR/C Relocation is initiated in the So!r%e RN* whenall the %ells of the a%ti(e set "elong to a different RN*+he SRN* sends a Re%ocation Re"ired message andstarts TRe%ocPrep s'e%ifies ma5 time for Relo%ation9re'aration in So!r%e-RN*4
• +he *N e(al!ates if the relo%ation is 'ossi"le and in that%ase it sends a Re%ocation Re"est to the +arget RN*
=E+arget RN*
SRN* Relo%ation $e%ision
*N
=ser 'lane set-!'
RANA9#Relo%ation Re/!ired
RANA9#Relo%ation Re/!est
RANA9#Relo%ation Re/!est A%k
So!r%e RN*
StartRelocPrep
StopR l P
StartReloc#verall
Relocatio&S.pport6)
Nr&cRelocatio&S.pport 6)
Re%ocationS"pport CN s&pports Relo4%tion,=*SD 0 No4 ? : 1es2
NrncRe%ocationS"pport nei6h7orin6 RNC s&pports Relo4%tion,=RD 0 No4 ? : 1es2
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%ase> it sends a Re%ocation Re"est to the +arget RN*with 'arameters for the "earer esta"lishment
• Re%oc3vera%% # s'e%ifies ma5 time for the 'rote%tion ofthe o(erall Relo%ation 'ro%ed!re in the So!r%e RN* setin So!r%e- & +arget RN*4
• Re%ocation Co##and sent from *N to So!r%e RN*with =+RAN information and "earer 'arameters
• After that> the So!r%e RN* sends Re%ocation Co##it
message o(er ,!r to the +arget RN*• @hen target RN* starts to a%t as Ser(ing RN*> it sends
a Re%ocation Detect message to *N +his messagehas no 'arameters
• At the same time 8TRAN Mo'i%it5 Infor#ation is sentto the =E> to inform that the relo%ation is 'erformed
• After the confir#> the target RN* informs *N withRe%ocation Co#p%ete that the relo%ation 'ro%ed!re wass!%%essf!l and ,! is released from so!r%e RN*
SRN* o'erationstarted
=9 swit%hing
RANA9#Relo%ation %om'lete
RR*#=+RAN o"ilit ,nformation
RANA9#Relo%ation *ommand
RNSA9#Relo%ation *ommit
RANA9#Relo%ation $ete%t
RR*#=+RAN o"ilit ,nformation *onfirm
RANA9#,! Release
RANA9#,! Release *om'lete
=ser 'lane release
RelocPrep
StartReloc#verall
StopReloc#verall
StopReloc#verall
TRe%ocPrepRN*D 116 sD 1 sD B s
TRe%oc3vera%% RN*D 116 sD 1 sD @ s
!. involved# Com$ined SR/C Relocation and inter+R/C HHO for R(
=E+arget RN*
SRN* Relo%ation $e%ision
*N
RANA9#Relo%ation Re/!ired
RANA9#Relo%ation Re/!est
RANA9#Relo%ation Re/!est A%k
So!r%e RN*
• e%a!se there is no ,!r interfa%e> %om"ined SRNS
relo%ation and )) are done "efore the =E is
%om'letel !nder the target RN*
• +he 'ro%ed!re is /!ite similar to the ;=E notin(ol(edM %ase !ntil Relo4%tion Co//%nd
Relocatio&S.pport6)
Nr&cRelocatio&S.pport 6)
StartRelocPrep
Start
Reloc#verall
Re%ocationS"pport CN s&pports Relo4%tion
,=*SD 0 No4 ? : 1es2
NrncRe%ocationS"pport nei6h7orin6 RNC
s&pports Relo4%tion,=RD 0 No4 ? : 1es2
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L1 sn% Esta"lished"etween +S and =E
=9 swit%hing
=ser 'lane set -!'
RANA9#Relo%ation %om'lete
9hsi%al *h Re%onfig *om'lete
RANA9#Relo%ation *ommand
9hsi%al *hannel Re%onfig!ration
RANA9#Relo%ation $ete%t
RANA9#,! Release
RANA9#,! Release *om'lete
=ser 'lane release
in(ol(ed %ase !ntil Relo4%tion Co//%nd
• +he onl differen%e in the Relo4%tion Re&ired
message> the Relo%ation +'e ,E is set to ZU"
in9ol9ed in relo4%tion of SRNSZ
• ,nstead of Relo%ation *ommit (ia ,!r> the ser(ing
RN* sends a 9hsi%al *) Re%onfig!ration> afterwhi%h the =E sto's transmitting and re%ei(ing on
the old radio links and starts on the new radio link
StopRelocPrep
StartReloc#verall
StopReloc#verall
StopReloc#verall
TRe%ocPrepRN*D 116 sD 1 sD B s
TRe%oc3vera%% RN*D 116 sD 1 sD @ s
SR/S relocation in C.LL,ACH state arameters
• ,f the state of the =E is *ELLU.A*) or *ELLU9*)> the SRN* Relo%ation 'ro%ed!re is started in the
SRN* when a RR*#*ell ='date message is re%ei(ed from the S (ia a target RNS and ,!r
• +he following management 'arameters in the so!r%e RN* are !sed for 'redefined s!''ort indi%ation
information the ZownZ *N nodes and the target RN*?*N nodes of the target RN*4 of the SRNS
relo%ation 'ro%ed!re#• Ce%%)ACHre%ocS"pport for PS-*N node %onne%ted to the SRN*>
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pp
• Ce%%)ACHnRncRe%ocS"pport for all neigh"oring RN*s of the SRN* this 'arameter %ontains a
%om"ined relo%ation s!''ort-information for target-RN* and the SGSNs4 %onne%ted to this
neigh"oring RN*4
SR/S Relocation not suorted 1PS2• ,f Relo%ation is not 'ossi"le & =E is in *ELLU$*) state> SRN* m!st %ontin!e %n4horin6 the
%onne%tion
• @hen RR* state of the =E is %hanged from *ELLU$*) to *ELLU.A*) d!e to ina%ti(it of NR+
Rs4> the an%horing RN* initiates a $S*R dire%ted signalling %onne%tion re-esta"lishment4
'ro%ed!re " sending an RR*# RR* *NNE*+,N RELEASE message with a %a!se (al!e
Z$ire%ted Signalling *onne%tion Re-esta"lishmentZ to the =E thro!gh ,!r & $RNS
•.or signalling see ne5t slide
Signalling• After =E has sent =+RAN o"ilit
,nformation *onfirm> the RR* entitshall %onfig!re the +[s to the =E "!sing RR*#eas!rement *ontrol'ro%ed!re and start the timerInactT#rNRTER(ESet"p
•
,f there is no =L?$L *R re%ei(ed> noRANA9 'ro%ed!re initiated> the =Ed t i iti t NAS i li
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doesnt initiate an NAS signalingse/!en%e eg LA= "ased on thegi(en *N-s'e%ifi% information4> theRR* entit shall initiate the transitionto *ellU9*) when the first ina%ti(itindi%ation is re%ei(ed from the A*-%entit after an e5'ir of the timer
InactT#rNRTER(ESet"p• +he RR* entit shall %he%k the
initial4(al!e of the MSActivit5S"pervision timer ,f the (al!e e/!alsto Cero> the S shall "e swit%hed to,dle ode instead of *ellU9*) state
*nact(mr/R(RSetu
RN*D 0 60D 1D < s
MSActivitit)Suervision
RN*D 01<<0D 1D = min
RRC:Cell / URA Update (CCCH)
R!A": Uplin# !i$nalin$ %rans&er Indication
'%!M! '%! %ar$et RC
RRC notices that the
!RC relocation is
not possi*le
M! in Cell+,ACH- Cell+"CH
or URA+"CH state
"! C
( If the Iur is in use )
!ource RC
%he M! selects a cell
controlled *y the tar$et
RC and initiates a
RRC:Cell/URA Update
procedure 3ia the '%!
! Cell)URA Up'ate Cause* U(RNT+ $
! ne C(RNT+* D(RNT+* UL message $
DSCR rocedure
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RAA": Iu Release
Complete
RAA": Iu Release
Command
RRC: RRC Connection Release (CCCH)
ot poss * e
Reser(ed
reso!r%es
released
R!A": .onlin# !i$nalin$ %rans&er Request
!RRC Conne#tion Release $
!#ause% &Dire#te' Signalling Conne#tion
Re(establishment& $
Call re-establishment: RRC Connection and A! Connection 0sta*lishment procedures1 RA Update to the !2!
M! in Cell+,ACH- Cell+"CH or URA+"CH state
RRC o& the %ar$et RC notices
that the routin$ o& a U4 !i$nalin$
%rans&er Ind5 messa$e to the
source RC is not possi*le
(OR)
DSCR# $ire%ted Signalling
*onne%tion Re-esta"lishment