08 principles of handover in wcdma

7/17/2019 08 Principles of Handover in WCDMA

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HUAWEI TECHNOLOGIES CO., LTD.

Internal

www.huawei.com

Huawei Confidential

WCDMA Handover

Principle


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a!eHUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

Wh# mo$ile %#%tem% need hando&e'(

)o$ile %#%tem% a'e com*o%ed $# cell%

which the co&e'a!e i% limited.

The mo$ilit# of the UE.

'o&idin! the continuou% %e'&ice + the

$a%ic element in oS.


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TS".--/ 0low of Hando&e' and

1elated a'amete'%

TS"./-- )ea%u'ement 'oce%%

TS"."/ Definition% of )ea%u'ement

Inde2e%


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Afte' %tud#in! thi% cou'%e, #ou will4

Unde'%tand $a%ic conce*t% a$out

hando&e'

Unde'%tand the flow of %oft hando&e'

)a%te' $a%ic *a'amete'% a$out %oft

hando&e'

)a%te' %oft hando&e' deci%ion al!o'ithm%


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Chapter 1 Overview of Handover

Chapter 2 Handover Measurement

Chapter 3 oft Handover

Chapter ! Hard Handover


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1"1 Purposes of Handover

1"2 Modes and tatus of the #$

1"3 Methods and %&pes of

Handover

1"! Comparison 'etween oft

Handover and Hard Handover


7/84a!eHUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

Purposes of Handover

'o&idin! the continuou% %e'&ice in mo$ile %#%tem i% the $a%ic

element in oS

'o&idin! continuou% communication %e'&ice i% the main *u'*o%e

of hando&e'.

The load $alance4 %ha'in! the 'e%ou'ce

The hie'a'ch# di&ided $# %*eed and %e'&ice4 hi!h efficienc# of

u%in! 'e%ou'ce






1"3 Methods and %&pes of

Handover

1"! Comparison 'etween oftHandover and Hard Handover



C$(()DCH C$(()*ACH

C$(()PCH#+A)PCH

ID($D$ADRRC connection

#$Modes and tatus



C$(()DCH C$(()*ACH

C$(()PCH#+A)PCH

ID($

D$AD

+ Sea'chin! a L)N+ 0ind a cell to cam*% on

+ )onite'in! the *a!in! channel

+ Cell 'e%electin!

+ Dedicated channel + Common channel,low %*eed %e'&ice

+ T'i!!e'ed $# theCN

+ 1educin! acti&itie%, D1:, %a&in! *owe' and 'e%ou'ce

RRC connection

The%e %tatu%e% a'e onl# a**liedin the UT1AN and UE. The# a'et'an%*a'ent to the CN.

#$Modes and tatus ,tatus mi-ration.

M/P0/oice0P

(ow speed P

Cell #pdate o trafficAfter several Cell

#pdates

#+A #pdate






1"3 Methods and %&pes of Handover




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Handover Methods

Chan!in! cell% in the %tatu% of CELL;DCH

Hando&e'

Di'ect 'et'#

Chan!in! 'e%idin! cell% in the %tatu%e% of IDLE, CELL;0ACH,

CELL;CH, and U1A;CH

Cell 'e%election


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Handover %&pes in C$(()DCH

Classif& '&&stem Chan-e

Classif& '&i-nalin- *low

Classif& '&*reuenc&Chan-e

Description

Int'a+ %#%tem

Soft hando&e'

Int'a+f'e>uenc#

Low+'ate %e'&ice%


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1"3 Methods and %&pes of Handover




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*eatures Comparison 'etween oft Handover

and Hard Handover

Item oft Handover ,ofter Handover. Hard Handover

um'er of radio lins inthe activate set

Se&e'al One

Interruption durin-handover

No @e%

*reuencies in the cells

'efore and afterhandover

Int'a+f'e>uenc#

Int'a+f'e>uenc#

Inte'+f'e>uenc# o'Inte'+1AT

Handover -ain)a2imum+'atio com$inin! o' %electi&ecom$inin! which can 'educe the im*act offadin! and t'an%mi%%ion *owe' of the UE.

None

Disadvanta-e

Occu*ie% mo'e 'e%ou'ce%.

'o$lem% occu' when the *owe' of %ofthando&e' cell% i% un$alanced.

Call d'o* 'atio i%

'elati&el# hi!he'

In a wo'd, %ome 'e%ou'ce% a'e wa%ted to o$tain o*timal %#%tem *e'fo'mance in %oft hando&e'.


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oft Handover 4 ,Connection 'efore Disconnection.

+Code51ode52


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ofter Handover 4 ,A pecial Case of oft Handover.

+Code 5

Cell A Cell 5


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Hard Handover6 ,Disconnection 'efore Connection.

+Code51 ode52


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7uestions

What a'e the diffe'ence% $etween

%oft hando&e', %ofte' hando&e', and

ha'd hando&e'(

Wh# int'a+f'e>uenc# hando&e' i% not

alwa#% %oft hando&e'(

How doe% hando&e' !ain a'i%e( How

much a'e &a'iou% hando&e' !ain%(


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ummar&

Thi% cha*te' de%c'i$e% the *u'*o%e% of

hando&e', wo'in! mode% of the UE and

common hando&e' t#*e% in the WCD)A

%#%tem, com*a'e% %oft hando&e' and ha'd

hando&e' and de%c'i$e% 'e%*ecti&e

ad&anta!e% and di%ad&anta!e%.

In addition, thi% cha*te' de%c'i$e% a $'ief

flow of each t#*e of hando&e'.


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Chapter 2 HandoverMeasurement



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2"1 5asic Concepts a'out

Handover

2"2 %hree teps of Handover

2"3 Measurement Control

2"! Measurement +eport


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5asic Concepts a'out Handover

Acti&e %et

monito' %et

Detection %et

E&ent 'e*o't

E&ent to *e'iodic 'e*o't

e'iodic 'e*o't

1adio lin


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2"1 5asic Concepts a'out Handover





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%hree teps of Handover

Decision

$8ecution

Measurement

The followin! fi!u'e %how% hando&e'

*'ocedu'e


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2"1 5asic Concepts a'out Handover





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Measurement Control

)ea%u'ement cont'ol i% u%ed to notif# the UE of the o$ect to $e

mea%u'ed, nei!h$o' cell li%t, 'e*o't method, and e&ent *a'amete'%.

When mea%u'ement condition% a'e chan!ed, the 1NC notifie% the

UE of new condition%.

)ea%u'ement Cont'ol, no'mal ca%e

UE UT1AN

)ea%u'ement Cont'ol


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Measurement Control

)ea%u'ement Cont'ol

The 1NC %end% a

mea%u'ement cont'ol me%%a!e

acco'din! to the $e%t cell in the

acti&e %et.

)ea%u'ement identit#

)ea%u'ement command

)ea%u'ement t#*e

)ea%u'ement o$ect

C'ite'ia of mea%u'ement 'e*o't

)ea%u'ement 'e*o't mode


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Measurement O'9ects

)ea%u'ement o$ect%

Int'a+f'e>uenc# mea%u'ement

CICH 1SC, CICH EcBIo, o' athlo%%


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Measurement Model

)ea%u'ement time of la#e' / i% "99 m%. The &endo'

can decide the filte'in! method.

0ilte'in! *a'amete'% of la#e' - can $e confi!u'ed.

)ea%u'ement 'e%ult% a'e 'e*o'ted when the 'e*o'tin!

c'ite'ia a'e met.

Layer 1filtering

Layer 3filtering Evaluation

of reporting

criteria

A DB C

C'

parameters parameters


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Measurement Model 6 (a&er 3 *ilterin-

0ilte'in! of mea%u'ement 'e%ult% $# the UE i% calculated acco'din! to

the followin! fo'mula4

0n


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2"1 5asic Concepts a'out

Handover

2"2 %hree teps in Handover




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Measurement +eport

When the mea%u'ement 'e*o'tin! c'ite'ia a'e met, the UE

'e*o't% the 'e%ult% to the 1NC a% an e&ent.

)ea%u'ement 1e*o't

UE UT1AN

)ea%u'ement 1e*o't


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Measurement +eport Methods

E&ent 'e*o't

The mea%u'ement 'e*o't i% %ent when the 'e*o'tin! c'ite'ia a'e met.

e'iodic 'e*o't


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Intra6freuenc& Measurement $vents

Int'a+f'e>uenc# mea%u'ement e&ent% a'e identified

th'ou!h /:. The# include4 /A4 A *'ima'# *ilot channel ente'% the 'e*o'tin! 'an!e. )ean% a monitored

cell is -ood enou-h that the #$ can add it into active set .

/A *'ima'# *ilot channel lea&e% the 'e*o'tin! 'an!e. )ean% a cell in the

active set is not -ood enou-h accordin- to the 'est cell. /C4 Su$%titution e&ent. A *'ima'# *ilot channel in an monito' %et i% $ette' than

that in the acti&e %et.

/D4 E&ent of chan!in! the $e%t %e'&in! cell.

/04 E&ent that mea%u'ement 'e%ult% of the cell% in the acti&e %et a'e lowe'

than the a$%olute th'e%hold.


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Inter6freuenc& Measurement $vents

Inter6freuenc& measurement events are identified '& 2:"

" e&ent4 The >ualit# of the %e'&in! cell i% lowe' than an a$%oluteth'e%hold &alue and the >ualit# of anothe' inte'+f'e>uenc# nei!h$o' cell i%

hi!he' than anothe' th'e%hold &alue.

"C e&ent4 The >ualit# of the inte'+f'e>uenc# nei!h$o' cell i% hi!he' than

an a$%olute th'e%hold &alue.

"D e&ent4 The >ualit# of the %e'&in! cell i% lowe' than a ce'tain a$%olute

th'e%hold &alue. It i% u%ed to %ta't the com*'e%% mode.

"0 e&ent4 The >ualit# of the %e'&in! cell i% hi!he' than a ce'tain a$%olute

th'e%hold &alue. It i% u%ed to %to* the com*'e%% mode.


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Inter6+A% Measurement $vents

Inter6+A% Measurement events are identified throu-h 3:"

-A e&ent4 The >ualit# of the cu''entl# u%ed f'e>uenc# i% lowe' than an

a$%olute th'e%hold &alue, $ut the >ualit# in a GS) cell i% hi!he' than

anothe' a$%olute th'e%hold &alue.

-C e&ent4 The >ualit# in a GS) cell i% hi!he' than an a$%olute th'e%hold

&alue. "D e&ent4 The >ualit# of the cu''entl# u%ed f'e>uenc# i% lowe' than a

ce'tain a$%olute th'e%hold &alue. It i% u%ed to %ta't the com*'e%%ed mode.

"0 e&ent4 The >ualit# of the cu''entl# u%ed f'e>uenc# i% hi!he' than a

ce'tain a$%olute th'e%hold &alue. It i% u%ed to %to* the com*'e%%ed mode.


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ome $vent +eport Control Parameters

1elati&e th'e%hold


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$vent +eport Decision

Decidin! acco'din! to the ud!ment ine>uation

$8ample; decision ineuation of 1A event

If W 9, fo' 1SC and EcBIo,

/9Lo!)


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6 $8ample of 1A $vent Measurement +eport

)ea%u'ement 'e%ult% in the *'ima'# cell

/A e&ent occu'%


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$vent +eport Decision ,Continued.

T'i!!e' c'ite'ia of 15e&ent4

)2/1!)11!1! 111

bbBest

N

i

inew HRLogMWMLogWLogMA

++

=

,2/11 ffNew HTM T'i!!e' c'ite'ia of 1*e&ent4

,2/1dBestNotBest HMM +T'i!!e' c'ite'ia of 1De&ent4

2/1cInASNew HMM +T'i!!e' c'ite'ia of 1Ce&ent4

$ t + t D i i


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6 $8ample of 15 $vent Measurement +eport

1B event is reported

Delete the cell in which the interference code is 23

$vent +eport


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$vent +eport

$vent +eport


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$vent +eport

$vent +eport


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$vent +eport


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7uestions

In which ca%e% doe% the 1NC t'i!!e'

mea%u'ement cont'ol(

I% the %ta't time of int'a+f'e>uenc#, inte'+

f'e>uenc#, and Inte'+1AT mea%u'ement

the %ame(

When i% an e&ent 'e*o'ted(

How to 'e*o't an e&ent(

What e&ent% doe% int'a+f'e>uenc#

mea%u'ement contain(

What e&ent% doe% inte'+f'e>uenc#mea%u'ement contain(


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ummar&

Thi% cha*te' de%c'i$e% conce*t% 'elated to

hando&e', e2*lain% mea%u'ement cont'ol, which

co&e'% mea%u'ement o$ect%, e&ent 'e*o't.


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3"1 *low of oft Handover

3"2 Common Parameters and Intra

*reuenc& ei-h'or Cell

*low of oft Handover Addin- +adio (in


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*low of oft Handover 6 Addin- +adio (in


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*low of oft Handover 6 Addin- +adio (in


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*low of oft Handover 6 Deletin- +adio (in


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Chapter 3 *low of oft Handover

3"1 *low of oft Handover

3"2 Common Parameters and Intra

*reuenc& ei-h'or Cell

ettin- Common Parameters of oft Handover


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ettin- Common Parameters of oft Handover +elative threshold

/A and / e&ent ha&e thei' indi&idual &alue%.

The &alue of / %hould $e la'!e' than that of /A, to a&oid *in!+*on!

hando&e'.


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Common Parameters of oft Handover ,Continued.

%ime to tri--er

Confi!u'ed it fo' each e&ent %e*a'atel#.

The &alue of / %hould $e la'!e' than that of /A, to a&oid *in!+*on!

hando&e'.


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Intra *reuenc& ei-h'or Cell

%he Handover can onl& happened amon- the nei-h'or cells

MM(; Add Intra*reCell;

Confi!u'e nei!h$o' cell% with the %ame f'e>uenc#

The ma2im num$e' of Int'a0'e>NCell fo' each cell i% -/

7


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7uestions

D'aw the %i!nalin! flow cha't of %oft

hando&e'.

What i% the im*act of *a'amete'% in

%oft hando&e' on %#%tem *e'fo'mance(

What *a'amete'% can affect*e'fo'mance of %oft hando&e' $e%ide%

the *a'amete'% de%c'i$ed in thi%

cha*te'(


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ummar&

Thi% cha*te' de%c'i$e% the %i!nalin!

flow and common *a'amete'% of %oft

hando&e' in WCD)A.

Oth H d


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Other Handovers

The WCD)A %#%tem %u**o't% man# hando&e' technolo!ie%.

e%ide% %oft uenc# ha'd hando&e', inte'+f'e>uenc# ha'd hando&e',

and Inte'+1AT hando&e'.

If the %#%tem %u**o't% HSDA, the WCD)A %#%tem al%o

%u**o't% hando&e' $etween ca''ie' f'e>uenc# of HSDA and

o'dina'# ca''ie' f'e>uenc# to $alance load and to utiliJe netwo'

'e%ou'ce% efficientl#.

1efe' to %u**lementa'# content% fo' de%c'i*tion of int'a+

f'e>uenc# ha'd hando&e', inte'+f'e>uenc# ha'd hando&e', and

Inte'+1AT hando&e'. Thi% *a't i% *'o&ided fo' %elf+%tud#.

C


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Course

ummar&

Course ummar&

Thi% cou'%e de%c'i$e'% the *'inci*le%,

al!o'ithm, 'elated *a'amete'% and!ene'al flow of %oft hando&e' in the

WCD)A %#%tem.


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%han &ou

www.huawei.com


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!"1 Intra6freuenc& Hard Handover

!"2 Inter6freuenc& Hard Handover

!"3 Inter6+A% Hard Handover

Intra6freuenc& Hard Handover


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Intra freuenc& Hard Handover

6 Measurement and $vent

)ea%u'ement

It i% %imila' to that in %oft hando&e'

1elated e&ent%

/D e&ent



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6 Handover *low%A+=$% OD$5 OA+C$ OD$5

-. ALCA ESTALISH)ENT

8. ALCA 1ELEASE



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&

6 Common Parameters

eit'ateThd4 E %e'&ice hando&e' 'ate deci%ion th'e%hold.

If the ma2imum 'ate of t'an%mi%%ion channel of the E %e'&ice i% not mo'ethan thi% th'e%hold, the %#%tem *e'fo'm% %oft hando&e' fo' the u%e'% u%in!

thi% %e'&ice.

If the ma2imum 'ate of t'an%mi%%ion channel of the E %e'&ice i% !'eate'

than thi% th'e%hold, the %#%tem *e'fo'm% int'a+f'e>uenc# ha'd hando&e'fo'

the u%e'% u%in! thi% %e'&ice.

MM(; $% HOCOMM

a'amete'% 'elated to the /D e&ent

Time to t'i!!e'


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Inter freuenc& Hard Handover Overview


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Inter6freuenc& Hard Handover Overview

0eatu'e%

The f'e>uenc# i% diffe'ent afte' hando&e'.

0o' the UE with onl# one t'an%cei&e', the com*'e%%ed mode %hould $e

%ta'ted to a%%i%t mea%u'ement.

Ad&anta!e%

The hando&e' %ucce%% 'ate i% hi!he' than that of int'a+f'e>uenc# ha'd

hando&e'.

The load on ca''ie' f'e>uencie% a'e $alanced.

Inter6freuenc& Hard Handover Overview


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Inter freuenc& Hard Handover Overview,Continued.

Di%ad&anta!e%

The com*'e%%ed mode cau%e% e2t'a 'adio 'e%ou'ce

A**lication %cena'io%

Uncontinuou% co&e'a!e of ca''ie'

Load cau%ed hando&e'

Hie'a'chical cell

Inter6freuenc& Hard Handover


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Inter freuenc& Hard Handover6 Measurement and $vent

)ea%u'ement in inte'+f'e>uenc# ha'd hando&e' )ea%u'ement &a'ia$le%4

CICH 1SC, CICH EcBN9

Diffe'ent mea%u'ement t#*e% a'e u%ed fo' diffe'ent hando&e' *u'*o%e%4

Ed!e of ca''ie' co&e'a!e a'ea4 CICH 1SC

Cente' of ca''ie' co&e'a!e a'ea4 CICH EcBNo



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6 Measurement and $vent ,Continued.

)ea%u'ement 1e*o't )ethod%

E&ent 'e*o't "D e&ent4 The >ualit# of cu''ent f'e>uenc# i% lowe' than a ce'tain a$%olute

th'e%hold &alue. It i% u%ed to %ta't the com*'e%%ed mode.

"0 e&ent4 The >ualit# of cu''ent f'e>uenc# i% hi!he' than a ce'tain a$%olute

th'e%hold &alue. It i% u%ed to %to* the com*'e%%ed mode.

" e&ent4 The >ualit# of cu''ent f'e>uenc# i% lowe' than the a$%olute

th'e%hold &alue, and the >ualit# of the nei!h$o' f'e>uenc# i% hi!he' than

anothe' a$%olute th'e%hold &alue. It i% u%ed in co&e'a!e hando&e' t'i!!e'.

"C e&ent4 The >ualit# of the nei!h$o' f'e>uenc# i% hi!he' than a ce'tain

a$%olute th'e%hold &alue. It i% u%ed in load hando&e' t'i!!e'.

e'iodic 'e*o't



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6 tartin- and toppin- of the Compression Mode

Sta'tin! condition% of mea%u'ement

"D e&ent4 If the >ualit# of the cu''entl# f'e>uenc# i% lowe' than a ce'tain

a$%olute th'e%hold &alue, the com*'e%%ed mode i% %ta'ted.

U%e the &elocit# e%timation al!o'ithm to decide %ta'tin! of inte'+f'e>uenc#

hando&e' mea%u'ement.

Sto**in! condition% of mea%u'ement

"0 e&ent

Afte' the $e%t cell i% chan!ed, the new $e%t cell doe% not ha&e an# inte'+

f'e>uenc# nei!h$o' cell.

The time' of inte'+f'e>uenc# mea%u'ement e2*i'e%.

The %*eed e%timate %tatu% of the UE chan!e%, and 'elated inte'+f'e>uenc#

hando&e' mea%u'ement i% di%a$led acco'din! to the hie'a'chical cell al!o'ithm

In ha'd hando&e', if the co&e'a!e 'ea%on i% t'i!!e'ed, hando&e' i% %to**ed

%imultaneou%l#.

Inter6freuenc& Hard Handover *low


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Inter6freuenc& Hard Handover *low

Si!nalin! flow

8. ALCA 1ELEASE

-. ALCA ESTALISH)ENT

OA+C$ OD$5%A+=$% OD$5



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6 Common Parameters Inte'+f'e>uenc# co&e'a!e hando&e' *a'amete'%4

)ethod% fo' 'e*o't inte'+f'e>uenc# mea%u'ement4 *e'iodic o' e&ent

Inte'+f'e>uenc# mea%u'ement &a'ia$le%4 CICH EcBNo o' CICH 1SC.

Inte'+f'e>uenc# mea%u'ement la#e' - filte'in! coefficient, time to t'i!!e',

and h#%te'e%i%

Sta'tin! and %to**in! th'e%hold &alue% of inte'+f'e>uenc# mea%u'ement4Confi!u'e it 'e%*ecti&el# fo' CICH EcBNo, CICH 1SC, and confi!u'e

"D, "0 e&ent fo' CS and S.

Inte'+f'e>uenc# co&e'a!e hando&e' th'e%hold &alue4 >ualit# th'e%hold &alue

of the ta'!et cell

ualit# th'e%hold &alue of u%ed f'e>uenc# in inte'+f'e>uenc# ha'd hando&e'

Lowe%t acce%% th'e%hold &alue in inte'+f'e>uenc# hando&e'

Inter6freuenc& Hard Handover 6 7uestions


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&

Wh# the com*'e%%ed mode th'e%hold fo' the CS and S a'e

confi!u'ed diffe'ent(

The E$BNo 'e>ui'ed $# the%e two %e'&ice% a'e diffe'ent, %o the1SC% a'e al%o diffe'ent.

If the UE u%e% the CS %e'&ice and S %e'&ice at the %ame time,

the "D and "0 *a'amete'% of which %e'&ice a'e u%ed to decide

%ta'tin! the com*'e%%ed mode(

If the *a'amete'% of an# %e'&ice meet the th'e%hold, the com*'e%%ed

mode i% %ta'ted.

I% the com*'e%%ed mode %ta'ted immediatel# afte' the UE %end%

the "D *a'amete'(

The com*'e%%ed mode i% %ta'ted afte' the 1NC 'econfi!u'e the 1.


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Inter6+A% Hard Handover

O&e'&iew

)ea%u'ement and E&ent

Hando&e' Deci%ion Al!o'ithm

Hando&e' 0low

Common a'amete'%

Inter6+A% Hard Handover 6 Overview


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Cate!o'# WCD)A 0DD MGS)

WCD)A 0DD MWCD)A TDD

WCD)A 0DD MCD)A"999

0eatu'e%

The 'adio acce%% technolo!# ui*ment% to the !'eate%t e2tent


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6 Measurement and $vent

)ea%u'ement in Inte'+1AT ha'd hando&e'


79/84


6 Measurement and $vent ,Continued.

)ea%u'ement 1e*o't E&ent 'e*o't

"De&ent4 %ta'tin! GS) mea%u'ement

"0e&ent4 %to**in! GS) mea%u'ement

-Ae&ent4 The >ualit# of WCD)A i% lowe' than an a$%olute th'e%hold $ut

>ualit# of a GS) nei!h$o' cell i% hi!he' than anothe' a$%olute th'e%hold.

-Ce&ent4 The >ualit# of a GS) nei!h$o' cell i% hi!he' than an a$%olute

th'e%hold.

Inter6+A% Hard Handover 6 Decision Al-orithm


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Inter +A% Hard Handover Decision Al-orithm

Deci%ion of Inte'+1AT hando&e'

Inte'+1AT hando&e' $a%ed on co&e'a!e

E&ent

-A e&ent4 The >ualit# of the cu''entl# u%ed f'e>uenc# i% lowe' than

an a$%olute th'e%hold &alue, $ut >ualit# of a GS) cell i% hi!he'

than anothe' a$%olute th'e%hold &alue.

e'iodic

E&aluation4 Confi'm the %tatu% acco'din! to the GS) 1SSI

mea%u'ement &alue and the SIC of the ta'!et cell in GS) and

e&aluate the cell of which the GS) 1SSI e2ceed% the a$%olute

th'e%hold &alue. If $oth condition% a'e met, con%ide' the cell of

which the SIC i% confi'med.

Inter6+A% Hard Handover


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6 Decision Al-orithm ,Continued.

Inte'+1AT hando&e' $a%ed on non+co&e'a!e

E&ent

The -C e&ent mean% that the >ualit# of the GS) cell i%

hi!he' than an a$%olute th'e%hold &alue.

Inter6+A% Handover *low


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Inter6+A% Handover 6 Common Parameters


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Inte'+1AT co&e'a!e hando&e' *a'amete'%

Sta'tin! and %to**in! th'e%hold% of Inte'+1AT mea%u'ement4 The#

dete'mine the th'e%hold% of the "D e&ent and "0 e&ent. Confi!u'e CICHEcBNo, CICH 1SC fo' the CS %e'&ice and S %e'&ice 'e%*ecti&el#.

)ea%u'ement &a'ia$le% fo' the "D e&ent and "0 e&ent in Inte'+1AT

hando&e'4 Select CICH EcBNo o' ICH 1SC.

SIC %election confi'mation %witch

Inte'+1AT co&e'a!e hando&e' th'e%hold4 GS) 1SSI th'e%hold in Inte'+1AT

co&e'a!e hando&e'. Confi!u'e it fo' the CS %e'&ice and S %e'&ice

'e%*ecti&el#.

ualit# th'e%hold of u%ed f'e>uenc# in Inte'+1AT hando&e'

Confi!u'e time to t'i!!e' and h#%te'e%i% fo' each e&ent 'e%*ecti&el#

enalt# du'ation

C t i f H d


84/84

ummar& 6 Cate-ories of Handover

Acco'din! to the %i!nalin! cha'acte'%

Soft hando&e' uenc# hando&e'

Inte'+1AT hando&e'

08 principles of handover in wcdma

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