wcdma load control

8/9/2019 WCDMA Load Control

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Apr. 2006

Node B Products of Huawei

May 2008

WCDMA Load Control

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e "

Overview

PUC

CAC

IAC

LDR

OLC


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #

Load Control exists in all !ases

Load Control is used to keep system stable, maximize system capacity w ileensurin! t e co"era!e and #o$.

%i&&erent load control al!orit ms accordin! to di&&erent p ases pro"ided'( )e&ore *+ access' otential *ser Control - *C( %urin! *+ access' Call Admission C eck -CAC and /ntelli!ent Access Control -/AC( A&ter *+ access' Load es u&&lin! -L% , and 1"erload Control -1LC

. A&ter *+ access2. %urin! *+ access3. )e&ore *+ access

4ime

5 LDRCACPUC5OLC

55 IAC

PUC" Potential User Control CAC" Call Ad#ission ControlIAC" Intelli$ent Ad#ission Control LDR" Load Res!ufflin$OLC" Overload Control


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $

Load control features

PUC 4 e &unction o& *C is to balance tra&&ic load amon! inter(&re uency cells. )y modi&yin!

cell selection and reselection parameters and broadcastin! t em t rou! system

in&ormation, *C leads *+s to cells wit li! t load. 4 e *+s may be in idle mode,

C+LL7 AC9 state, C+LL7 C9 state, or * A7 C9 state.

CAC 4 e &unction o& CAC is to decide on resource re uests &rom *+s, suc as access,

recon&i!uration, and ando"er re uests, accordin! to t e resource status o& t e cell.

IAC 4 e &unction o& /AC is to increase t e access success rate wit t e current #o$ assured

t rou! rate ne!otiation, ueuin!, preemption, and %irect etry %ecision -% % .


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e %

Load control features

LDR 4 e &unction o& L% is to reduce t e load o& a cell w en t e a"ailable resources o& t e

cell reac t e speci&ied alarm t res old. 4 e purpose o& L% is to increase t e accesssuccess rate in t e &ollowin! ways'

Inter-frequency load handover

Code reshufflingBE service rate reduction

AMR voice service rate reductionUncontrolled realtime traffic QoS renegotiationCS inter-RA load handover!S inter-RA load handover

OLC 4 e &unction o& 1LC is to reduce t e cell load rapidly by restrictin! t e 4ransport ormat

-4 o& t e )+ ser"ice or releasin! *+s w en t e cell is o"erloaded. 4 e purpose o& 1LCis to ensure t e stability o& t e system and t e #o$ o& most *+s.


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e &

Load Control for different cell load level


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%!res!olds and actions of t!e load controlal$orit!#s


8/55HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e (

RAB inte$rate riorit&If t!e value of t!e ara#eter is set to %raffic Class' t!e inte$rate

riorit& a(ides (& t!e followin$ rules"Classes o& ser"ices' con"ersational (: streamin! (: interacti"e (:

back!round

$er"ices o& t e same class' priority based on Allocation; etention riority

-A "alues

1nly &or t e interacti"e ser"ice o& t e same A "alue' priority based on

49

$er"ices o& t e same class and priority' 9$% A or %C9 ser"ice pre&erred

on t e basis o& t e "alue o& t e /ndicator o& Carrier 4ype riority

parameter


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e )

RAB inte$rate riorit&

If t!e value of t!e ara#eter is set to ARP' t!e inte$rate riorit&a(ides (& t!e followin$ rules"

A 3 (: A 2 (: A < (: A 3=

$ame A "alue' con"ersational (: streamin! (: interacti"e (:

back!round

1nly &or t e interacti"e ser"ice o& t e same A ' priority based on 49

$er"ices o& t e same A , class and 49 -only &or interacti"e ser"ice '

9$% A or %C9 ser"ice pre&erred on t e basis o& t e "alue o& t e

/ndicator o& Carrier 4ype riority parameter


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e *+

Priorit& Definition ) *xa# le

A) /% A 4ra&&ic Class 49 )ear 4ype

A 3 /nteracti"e %C9

) 3 /nteracti"e 9$% A

C 2 Con"ersational %C9

% 2 )ack!round %C9

+ 2 )ack!round 9$% A

2 $treamin! %C9

+ervices wit! different ARP,%C,%HP,Bear

A is t e top(priority, and 9$% A o"er %C9

4C is t e top(priority, and 9$% A o"er %C9

A>? A 4ra&&ic Class 49 )ear 4ype

) 3 /nteracti"e 9$% A

A 3 /nteracti"e %C9

C 2 Con"ersational %C9

2 $treamin! %C9

+ 2 )ack!round 9$% A

% 2 )ack!round %C9

A>? 4ra&&ic Class A 49 )ear 4ype

C Con"ersational 2 %C9

$treamin! 2 %C9

) /nteracti"e 3 9$% A

A /nteracti"e 3 %C9

+ )ack!round 2 9$% A

% )ack!round 2 %C9


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e **

Priorit& Definition in Huawei I# le#entation

UserPriority

ARP 0 3 2 = @ 6 8 B 30 33 32 3 3=

UserPriorit& + 1 - - - - - . . . . . / / / /

User Integrate Priority "

) 0or #ulti le)RAB users' deter#ined (& t!e service wit! t!e !i$!estRAB Integrate Priority 1

User Priority "2old 3-4

+ilver 3.4 Bron5e 3/4

%& ical Ma in$ of 6ARP7 and 6User Priorit&7


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e *#

Overview

PUC

CAC

IAC

LDR

OLC


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e *$

Potentioal User Control

%!e PUC al$orit!# controls t!e cell selection of a otential U* and revents an idle U* fro#ca# in$ on a !eav& load cell1


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e *%

Potentioal User ControlCell load co#es wit! t!ree levels" !eav&' nor#al' and li$!t1F en cell load is i! er t an t e load le"el di"ision upper t res old plus t e load le"el di"ision

ysteresis, it is decided to be ea"y.F en cell load is lower t an t e load le"el lower t res old plus t e load le"el di"ision ysteresis, it

is decided to be li! t.


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e *&

Potentioal User Control

Based on t!e cell load' PUC wor9s as follows"/& t e cell load becomes ea"y, *C modi&ies cell selection and reselection

parameters and broadcasts t em t rou! system in&ormation. /n t is way, *C

leads *+s to nei! borin! cells wit li! t load.

/& t e cell load becomes normal, *C uses t e cell selection and reselection

parameters con&i!ured on t e LM4.

/& t e cell load becomes li! t, *C modi&ies cell selection and reselection

parameters and broadcasts t em t rou! system in&ormation. /n t is way, *C

leads *+s to t is cell.


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e *'

Overview

PUC

CAC

IAC

LDR

OLC


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e *(

Resource Ad#ission C!ec9 Overview

Affected users Users in connected mode

Procedure Make decision whether to admit

new users or service upgrade

according to the available system

resources.

Resources to

check

1. DL Channelization Code

2. adio esource! "ower #

$nter%erence

&. Credit! esource

'. $ub transmission bandwidth

For

HSDPA/HSUPAMa(imum user number per Cell #)ode*

Admission re6uest

Code resource based admissionG

Credit resource based admissionG

/ub resourcebased admissionG

0esource admission passed

,ower resource based admissionG

Hes

Hes

Hes

Hes

Hes

0esource admission denied

>o

>o

>o

>o


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e *)

Ad#ission C!ec9 of Radio Resource

UL and DL inde endentl&

On t!e (asis of %CP , R%WP On t!e (asis of e:uivalent user nu#(er

e uest initiation

*plink calladmission desicion

AdmittedG

%ownlink calladmission desicion

AdmittedG

e uest admitted e uest reIected

+nd

>o

>o

Hes

Hes


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e "+

Ad#ission Al$orit!# +election

Al$orit!# - " (ased on %CP,R%WP #easure#ent and load incre#ent esti#ation%ownlink'

Load le"el de&inition' 4C -4ransmitted Carrier ower

*plink'

Load le"el de&inition' load &actor

Load increment o& t e new re uest is taken into consideration.

Al$orit!# . " (ased on static *:uivalent Nu#(er of Users calculation

$tandard user' 32.2kbps AM wit acti"e &actor 300J.

Al$orit!# / " (ased on current %CP,R%WP #easure#ent)ased on 4C ; 4F measurementK

Load increment o& t e new re uest is not taken into consideration

RTWP

P N

UL −= 1η


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e "*

U lin9 Ad#ission Al$orit!# - ; /

)/( No Ec Fun=∆ η

*plink admission control re uest

Eet measured 4F and calculatet e current uplink load &actor.

Calculate t e increment o& t e

uplink load due to t e re uest.

Eet t e predicted uplink load&actor.

RTWP P N

UL −= 1η

LU UL predicted UL η η η ∆+=

,

Compare t e predicted "alue witadmission t res old


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e ""

Downlin9 Ad#ission Al$orit!# -;/

)/ _ ,/( No EcCPICH No Ec Fun P =∆

%ownlink admission control re uest

Eet measured current 4C

Calculate t e increment o& t edownlink power due to t e re uest.

Eet t e predicted downlink totalpower

Compare t e predicted power witadmission t res old

TCP

P TCP P ∆+= predicted


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e "#

Priorit& Handlin$ of Ad#ission C!ec9

Para#eters Default value

U" #andover access threshold 80

U" threshold of Conv AMR service @

U" threshold of Conv non$AMR service @

U" threshold of other services 60

%!res!old for u lin9 radio resource ad#ission c!ec9

Para#eters Default value

%" #andover access threshold 8@

%" threshold of Conv AMR service 80

%" threshold of Conv non$AMR service 80

%" threshold of other services @

5%!res!old for downlin9 radio resource ad#ission c!ec9


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e "$

Code Mana$e#entCode mana!ement is used to mana!e t e code resource between all t ep ysical c annels, includin! common c annel -CC9 e.!. C /C9 and

CC C9, dedicated c annel -% C9 , and s ared c annel -9$% A .

% C9CC9

$ 36$ 8

$=

9$% A

Code &or % C9'- %ynamically allocated

Code &or common c annel'- eser"ed

Code &or 9$% A'- $ ared wit BB - e&er to 9$% A part


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e "%

Code Allocation Mec!anis#

eser"e t e codeswit smallest $ toimpro"e utilizationrate o& w ole codetree.

1n t e basis o& maximum &ree sub(tree

Less code&ra!mentsare le&t


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e "&

Ad#ission C!ec9 of Iu( Bandwidt!

DPCH +ervice

)andwidt consumption'M) Active factor

H+DPA +ervice)andwidt consumption'

E) Active factor

%raffic ClassActive0actor +co e

Common C annels 3

>ode)

$ ) 0.B

4elep ony -AM NO1/ 0.

BB Con"ersational -O 3

BB $treamin! 3

BB /nteracti"e 0.B

BB )ack!round 0.B

9$% A $treamin! 3

9$% A /nteracti"e 0.B9$% A )ack!round 0.B

Confi$ura(leer service

t& e


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e "'

Ad#ission C!ec9 of NodeB Credit

Ad#ission C!ec9"

Credits o& local cellCredits o& local cell !roup

Credits o& >ode)

Credit Consu# tion Law"eported &rom >ode)

/n terms o& $

9$% A is not in"ol"ed


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e "(

Overview

PUC

CAC

IACLDR

OLC


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e ")

Intelli$ent Ad#ission Control Overview

,reemption

#ueuin!

%0%

Ad#issional$orit!#

$ucceeded

8ailed

8ailed or notsupported

8ailed or notsupported

$er"ice re6uestdenied

$er"ice re6uestadmitted

8ailed

$ucc(eeded

$ucc(eeded

$ucc(eeded

8ailed$ucc(eeded

8ailed

$ucceeded $ucceeded

RAB rocessin$

RRC connection rocessin$

/u #os >e!otiational!orit m switc

*+ capability

0A) establis ment0A) modi&ication

/nbound relocation

0aterecon&i!uration

ard ando"er

Cell loadin&ormation list L/4

+cenario

L%M C0M 1t ers

%CCC al!orit m switc

Ratene$otiation

,$ domain'maximum ratene!otiation

,$ and C$domains'initial ratene!otiation

,$ domain )+ser"ice'

tar!et ratene!otiation

Load admission

Code resourceadmission

/ub resourceadmission

Credit resourceadmission

8ailedRRC connectionre:uest

Ad#issional$orit!# DRD Redirection


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #+

Rate Ne$otiation in IAC

5 8=kbps

52@6kbps

5328kbps

56=kbps

5 2kbps

U* ca a(ilities5 P!&sical la&er ca a(ilit&5 %rans ort c!annel ca a(ilit&5 RLC ca a(ilit&

Maxi#u# allowed (it rate

+&ste# load5 C!anneli5ation codes5 Iu( trans#ission resources5 Radio resources

Initial data rate , %ar$et data rate

+cenarios" RAB setu RAB #odif&' reconfi$uration


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #*

Rate Ne$otiation in IAC

Rate ne$otiation includes t!e #axi#u# ex ected rate ne$otiationand initial rate ne$otiation1

Maximum expected rate ne!otiation

/nitial rate ne!otiation


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #"

Pre)e# tion and =ueuin$

=ueuin$

Wei$!t (ased :ueuin$Periodicall& retr&

Pre)e# tion

Low-io-it

Hi!h-io-it

Inte$rate Priorit& considered") %raffic Class) Allocation,Retention Priorit&

) Bear %& e 3R88,H+DPA4) %HP 3%raffic Handlin$ Priorit&4

Priority basedPre-empt

P:ueue > %#ax ? %ela sed) %ela sed " t!e ti#e w!ic! t!e service re:uest !as :ueued1

) %#ax " t!e #axi#u# ti#e w!ic! t!e service re:uest can (e

in t!e :ueue1


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e ##

Resource to tri$$er ree# tion

/& cell resource decision &ails and t e >C recei"es a A) A$$/E>M+>4

+#*+$4 messa!e, indicatin! t at preemption is supported, t en t e >C

per&orms t e preemption &unction.

4 e &ollowin! table describes w ic resource can tri!!er t e preemption

procedure &or di&&erent ser"ices.

Se-/ice 0e1ou-ce That can T-i!!e- -eem2tion

owe- ENU Code Iu3 CE U1e-Num3e-

DCH 4 4 4 4 4 5

HSD A 5 4 5 4

HSU A 4 5 4 5 4

676S 4 4 4 4 5


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #$

RRC Direct Retr& ; Re)direction

- RR C C ONN*C %ION R* =U* +%. R RC CONN* C%ION +* %UP/ RRC CON N*%ION +* %UP CO MPL *%*

RRC ConnectionDirect Retr&

%urin! t e C connection setup, i& t e *+ &ails to access t e cell, t e >C

c ooses a suitable inter(&re uency cell and directs t e *+ to try t is cell.

RRC ConnectionRe)direction

/n t e case o& C % % &ailure, t e >C includes an inter(&re uency or inter(A4 redirection indication in t e C C1>>+C4/1> +P+C4 messa!e. 4 is

messa!e directs t e *+ to initiate an inter(&re uency or inter( A4 C

connection setup a&ter cell selection or resection.

Initi all& ca# in $on cell -

0-

0.

Cell-

Resourcea l&

- .

RRC Direct R et r&suc ce ssfull & on cell ./

- RRC CON N*C% ION R*= U*+ %. RR C CO NN*C %IONR* @*C%3Redi rection inf o 4/ Cel l resel ectio n" In ter)f re: ac cessOr / Cell r eselec tion " Inte r)RA % acc ess

Initi all& ca# in$on c ell -

0-

0.

Cell-

Resourcea l&

- .

RRC R e)Dire ct to In ter )0r e: or in ter )RA% c e ll/

Cell.Inter)RA% Cell-Inter)0re: Cell-

2+M


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #%

RAB Direct Retr&RAB DirectRetr&

A) % % is used w en *+ initiates A) A$$/E>M+>4 procedure but is re&used

by t e ori!inal cell and may retry to ot er cells.

Inter)0re: Cell.

CN

Cell-

-

.

+RNC

/

- RAB Assi$n#ent3fro# CN4. RB +*%UP 30re:-4/ RB +*%UPCOMPL*%*

RAB Assi$n#entRes

4 e >C determines t e admissiono& t e inter(&re uency tar!et cell &orblind ando"er.

/& t e admission is accepted, t e% % procedure is per&ormed &or t einter(&re uency tar!et cell &or blind

ando"er.

4 e >C starts t e L setupprocedure to complete t e inter(&re uency ard ando"er.

4 e >C starts t e ) setupprocedure to complete t e inter(&re uency ard ando"er on t e *uinter&ace and t e ser"ice setup


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #&

Para#eters" Intelli$ent Ad#ission Control

RateNe$otiation

-1P+ #axi#u# rate ne$otiation.1P+ ; C+ initial rate ne$otiation/1P+ tar$et rate ne$otiation

Pre)e# tion -1User riorit& (ased re)e# tion for R88.1RAB riorit& (ased re)e# tion forH+DPA

=ueue -1RAB riorit& (ased :ueuin$1

DRD +witc!

DRD -1RRC connection direct retr&.1RRC connection redirection/1RAB direct retr&

Ma !ueuing "i#e $engt%


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #'

Overview

PUC

CAC

IACLDR

OLC


38/55

HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #(

Load Res!ufflin$

PowerResources

Iu( %rans#issionResources

NodeB CreditResources

Handover Downsi5in$ RAN)CNRene$otiation

IRA%HO

I0HO

DCCC

AMRC

0or P+ +trea#in$

+ervice =ualit&Unc!an$e +ervice =ualit&Down$rade

C+

P+

Load Res!ufflin$ 3LDR4

Monitorin$ load' tri$$ert!e actions

corres ondin$ to (asiccon$estion

Code Resources

CodeRes!ufflin$

MBM+Power Down$radin$


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e #)

Availa(le Res!ufflin$ Actions And O( ects

Resource UL,DL

LDR Actions

Inter)0re: HO

B* RateReduction

Inter)RA%

C+ HO

Inter)RA% P+

HOAMR

ReductionIu =o+

Rene$otiationCode

Res!ufflin$MBM+ PowerDown$radin$

PowerResource

ULDL

CodeResource

UL 1

DL

NodeB CreditUL √

DL

Iu( %rans ortResource

UL DL

O( ect

LDR Actions

Inter)0re: HO

B* RateReduction

Inter)RA% C+HO

Inter)RA% P+HO

AMRReduction

Iu =o+Rene$otiation

CodeRes!ufflin$

MBM+ PowerDown$radin$

DCH

H+DPA

H+UPA

MBM+


40/55

HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $+

Load Res!ufflin$ Due %o Power Li#itation

trig ldr N Thr

RTWP P RTWP

_ >−

=η

U lin9

Downlin9

sup _ max max( min( , ))non hspa GBR h a res hspa total ldr P GBP P P P Thr − − −+ + > ×

eser"ed power &or 9$* Arelated %L c annels -4 epower o& downlink control

c annels -+(AEC9;+(EC9;+(9/C9

%l #SU!A reserved factorADD C*LLCAC

E R%WP (ased UL LDR

E Power (ased DL LDR


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $*

Load Res!ufflin$ Due %o Code Li#itation

%ri$$er condition

Cell S& reserve threshold

Ma' user num(er of code ad)ust

ADD C*LLLDR

Actions

Minimum a"ailable $ : reser"ed $ 74 d

E Code res!ufflin$

E B* rate reduction


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $"

Load Res!ufflin$ Due %o NodeB Credit Li#itation

%ri$$er condition

Actions

, , , _ NodeB UL NodeB current UL Ldr ULC C Thr − ≤

, , , _ NodeB DL NodeB current DL Ldr DLC C Thr − ≤

E UL,DL se arate

E Inter)RA% P+,C+ HO

E B* rate reduction


43/55

HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $#

Load Res!ufflin$ Due %o *NU Li#itation

resCCH DCH DL N N N _ +=

trig ldr

Ma

UL

Thr ! !

_ >=η

UL

CCH

UL

DCH

UL

"trea# H

UL

BE H

UL

H"UP$

UL ! ! ! ! ! ! ++++= −−

U lin9

Downlin9E 0or R88 cell

ldr dchresCCH DCH Thr N N N −⋅>+ max _

E 0or H+DPA cellIf *NU (ased DL LDR is ena(led' H+DPA users s!all not (e

selected to erfor# load res!ufflin$ actions1

E *NU (ased UL LDR

% i$$ f LDR


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $$

%ri$$ers of LDRPower Resource"

Load le"el : L% tri!!er t res old

Iu( Bandwidt!" A"ailable /ub bandwidt Q prede&ined t res old

MML co##and Para#eter na#e Para#eter ID Default value A%%;M1% C+LLL%M *L;%L L% tri!!er t res old *LL% 4 /E49%

%LL% 4 /E49%@@J

0J

A%%;M1%

AAL2A%P>1%+

4 orward con!estion control t res old4 )ackward con!estion control t res old

> 4 orward con!estion control t res old> 4 )ackward con!estion control t res old

9s 4 orward con!estion control t res old9s 4 )ackward con!estion control t res old9s>rt orward con!estion control t res old9s>rt )ackward con!estion controlt res old

4 FC1>E49%4)FC1>E49%

> 4 FC1>E49%> 4)FC1>E49%9$ 4 FC1>E49%9$ 4)FC1>E49%9$> 4 FC1>E49%9$> 4)FC1>E49%

B@JB@JB@JB@JB@JB@JB@JB@J

>o

C eck t e load o& t eser"in! periodically

/s t e load i! er t anbasic con!estion tri!!er

t res old

4ake con!estionrelease measures

Hes

>o

+nd load adIustment

Hes

/s t e load lower t anbasic con!estion release

t res old

I t )0 & H d i LDR


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $%

Inter)0re:uenc& Handover in LDRCandidate tar!et cell'

RL% tri!!er t res old in tar!et cell D current load le"el in tar!et cellS :

rede&ined t!res!old in tar!et cell

Candidate users'*sers wit t e lowest Inte$rated Priorit&)it rate smaller t an t e prede&ined #axi#u# (andwidt!

Action')lind ando"er

Cell 3

Cell 2

Load' i!

Load' low

MML co##and Para#eter na#e Para#eter ID Defaultvalue

A%%;L$4;M1%

C+LLL%*L;%L /nter(&re cell load

ando"er load space t res old

*L/>4+ +#91C+LLL1A%

$ AC+49%

%L/>4+ +#91C+LLL1A%

$ AC+49%

20 -J

*L;%L /nter(&re cell load

ando"er maximum bandwidt

*L/>4+ +#91)F49%;%L

/>4+ +#91)F49%

=00 -kbps

B* R R d i i LDR


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $&

B* Rate Reduction in LDR

Candidate *sers'

*sers wit t e lowest inte$rated riorit&1nly B* services are in"ol"ed.

Action'

econ&i!uration

Hi!he1t Hi!h Lowe1t

Bit rate

G70

Priorit&

#($8321*"(8321

&$8 &$8 &$8


A%%;L$4;M1%C+LLL%

*L;%L L% ()+ ratereduction A) number

*LL% )+ A4+ +%*C4/1> A)>*M

%LL% )+ A4+ +%*C4/1>

A)>*M

3

AMR R t R d ti i LDR


47/55

HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $'

AMR Rate Reduction in LDR

Candidate ser"ice'

AM ser"ice wit t e lowest inte$rated riorit& Action'

%ownlink' ate control o"er /u inter&ace

*plink' 4 C control o"er *u inter&ace.


A%%;L$4;M1%

C+LLL%*L;%L L% (AM rate

reduction A) number

*LL% AM A4+ +%*C4/1> A

)>*M

%LL% AM A4+ +%*C4/1> A

)>*M

R% + i + R $ ti ti i LDR


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $(

R% +ervice =o+ Rene$otiation in LDR

Candidate ser"ice'$ streamin!

Action'#o$ rene!otiation o"er /u

3 >C' A) modi&ication re uest -/u

2 C>' A) assi!nment -/u

>C' recon&i!uration -/ub;*u


A%%;L$4;M1%

C+LLL%*L;%L L% un(ctrl 4

#os re(ne!o A) num

*LL% $ 4#1$ +>+E A)

>*M

%LL% $ 4#1$ +>+E A)

>*M

3

Inter)RA% Handover of LDR


49/55

HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e $)

Inter)RA% Handover of LDR

Candidate tar!et cell'

2E cells wit same;bi!!er co"era!e as ser"in! E cell

Candidate users'*ser wit lowest /nte!rated riority

Actions'

P+ service inter( A4 ando"er C+ service inter( A4 ando"er

WCD6A

GS6 CELL

Load9 hi!h


A%%;L$4;M1%

C+LLL%*L;%L L% $ inter(

rat o user number

*LL% $/>4+ A491*$+ >*M

%LL% $/>4+ A491*$+ >*M

3

*L;%L L% C$ inter(

rat o user number

*LL% C$/>4+ A491*$+ >*M

%LL% C$/>4+ A491*$+ >*M


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e %+

Overview

PUC

CAC

IACLDR

OLC

Overload Control 3OLC4


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e %*

Overload Control 3OLC4

Actions supported'

4 C Control o& BB )+ ser"ice

%rop o& low priority *+s$e uence o& 1LC actions'

ast 4 C control (: Call drop o& *+s

C eck t e load o& t e

ser"in! periodically

/s t e load i! er t ano"erload con!estion tri!!er

t res old

Hes

>o

Hes

>o

4ake actions to releasecon!estion

+nd load adIustment

/s t e load lower t ano"erload con!estion release

t res old


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e %"

0ast %0C Control in OLC

Monitor Cell Load

/& Cell load :Con!estion t res old

Con!estion %etected

and in&orm MAC

Con!estion elie"edand in&rom MAC

MAC decrease t emax 4 number

$tart a AdIust 4imer

expires

?ill t e AdIust 4imer

MAC increase t e

max 4 number

$tart a eco"er 4imer

expires

%ownlink 4 C Control

er&ormed wit in MAC(d; >C

*plink 4 C Control

>C (: *+' 4 C control

P # t f O l d C t l


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e %#

Para#eters of Overload Control

MML co##and Para#eter na#e Para#eter ID Default value A%%;L$4;M1%

C+LLL%M

*L;%L 1LC tri!!er t res old *L1LC4 /E49%

%L1LC4 /E49%

B@J

*L;%L 1LC elease t res old *L1LC +L49% %L1LC +L49% B0J

A%%;L$4;M1%

C+LL1LC

*L;%L 1LC &ast 4 restrict A) number *L1LC 4 $4 C4 A)>*M

%L1LC 4 $4 C4 A)>*M

%ata rate restrict coe&&icient A4+ $4 C4C1+ 68J

%L 1LC &ast 4 restrict data rate restrict

timer len!t

A4+ $4 C44/M+ L+> $

%L 1LC &ast 4 restrict data rate reco"er

timer len!t

A4+ +C1O+ 4/M+ L+> @$

*L;%L 1LC tra&& release A) number *L1LC4 A +L A)>*M%L1LC4 A +L A)>*M

0

+u##ar&" Load Control Para#eter Classification


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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confdential a!e %$

+u##ar& Load Control Para#eter Classification>C

adioClass

Elobal araClass CellClass

L%M.Class

C+LL *C.Class*$+ /1 /4H.Class

C1 MALE1$F/4C9 .Class

C.Class

#*+*+ ++M 4.Class

C+LLL%M.Class

C+LLL% .Class

C+LL1LC.Class

C+LLCAC.Class

U$&D$ 'asic #eas rprt cycle( Unit)*+#s

U$&D$ 'asic #eas rprt cycle( Unit)#in

L%M.Class

Integrate Priority ,onfigure- Reference

In-icator of ,arrier "ype Priority

*$+ /1 /4H.Class

RAB Downsi.ing /witc%

/witc%er for IU !o/ 0egotiation

C1 MALE1$F/4C9 .Class

Uplink initial access rates

Downlink initial access rates

C .Class

C+LLL% .Class

U$&D$ Inter1fre2 cell loa- %an-over loa- space t%res%ol-

U$&D$ Inter1fre2 cell loa- %an-over #a i#u# 'oun- wi-t%

U$&D$ $DR1BE rate re-uction RAB nu#'er

U$&D$ $DR un1ctrl R" !os re1nego RAB nu#

U$&D$ $DR ,/ inter1rat %o user nu#'er

U$&D$ $DR P/ i nter1rat %o user nu#'er

U$&D$ $DR1AMR rate re-uction RAB nu#'er

$oa- level -ivision t%res%ol- *

$oa- level -ivision t%res%ol- 3

$oa- level -ivision %ysteresis

C+LL *C.Class

Pree#pt algorit%# switc%

!ueue algorit%# switc%

Poll ti#er lengt%

#*+*+ ++M 4.Class

U$ t%res%ol- of ,onv AMR service

U$ t%res%ol- of ,onv non4AMR service

U$ t%res%ol- of ot%er services

U$ 5an-over access t%res%ol-

D$ t%res%ol- of ,onv AMR service

D$ t%res%ol- of ,onv non4AMR service

D$ t%res%ol- of ot%er services

D$ 5an-over access t%res%ol-

D$ total non%s-pa e2uivalent user nu#'er

Ma i#u# 5/DPA user nu#'er

C+LLCAC.Class

U$&D$ O$, fast "6 restrict ti#es

U$&D$ O$, fast "6 restrict RAB nu#'er

Data rate restrict coefficient

U$&D$ O$, traff release RAB nu#'er

C+LL1LC.Class

U$&D$ $DR trigger t%res%ol-

U$&D$ $DR release t%res%ol-

U$&D$ O$, "rigger t%res%ol-

U$&D$ O$, Release t%res%ol-

C+LLL%M.Class


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%!an9 Fou

wcdma load control

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