Day3_ Session13_uality of Service (QoS) Definition and Standards

8/10/2019 Day3_ Session13_uality of Service (QoS) Definition and Standards

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Quality of ServiceQuality of Service

((QoSQoS) definition and) definition and

standardsstandards

Sami TABBANE

ITU ASP COE Trainin on

!Wireless Broadband"

5-8 November 2013 Nadi (Fiji Islands)

Session #$

2

CONTENTSCONTENTS

I% Qos definitions and o&'ectives

II% Qos criteria

III% Evaluation of te QoS

I% Quality of Service in *S+,*P-S

% Quality of Service in U+TS

I% Quality of Service in .TE

II% Summary


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CONTENTSCONTENTS

I% QoS definitions and o&'ectives

4

/0AT IS T0E QUA.IT1 O2 SE-ICE 3/0AT IS T0E QUA.IT1 O2 SE-ICE 3

Evolution a44roac

Classically

Perorman!e o"#imi$a#ion in lo%er la&ers

im"rovemen# o 'ser o*

Top-down approach+ ,e##er a!ieved as

!an.es in lo%er la&ers ma& ave dieren#

im"a!#s on a""li!a#ion la&ers and 'ser

servi!es*


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*ENE-A. APP-OAC0*ENE-A. APP-OAC0

5efinition

a"abili#& o #e !ell'lar servi!e "roviders #o

"rovide a sa#isa!#or& servi!e+

oi!e 'ali#&

i.nal s#ren.#

o% !all blo!in. and dro""in. "robabili#&

i. da#a ra#es or m'l#imedia and da#aa""li!a#ions*

6

EN5 TO EN5EN5 TO EN5 QQooSS


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7adio ne#%or "erorman!es (errors "lannin.)

Ne#%or !a"a!i#&

Ne#%or desi.n (ransmission !a"a!i#&)

9""li!a#ion desi.n (ina""ro"ria#e "ro#o!ols 'sed or

mobile environmen#)

ervi!e s'""or# (#e!nolo.ies in!orre!#l& !oni.'red

as !om"ression 'ali#& !on#rol :)*

QUA.IT1 O2 SE-ICE I+PAI-+ENT O-I*INSQUA.IT1 O2 SE-ICE I+PAI-+ENT O-I*INS

8

QoS (;I-)+


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Serveability performance

QoS and NP, Performance network (ITU Rec !"##$

'ali#& o ervi!e

Service support(ability to

provide a serviceand help its

usage)

Serviceoperability

(capacity of aservice to be

used)

Serviceaccessibility

Servce sustaina-bility

Serviceintegrity

Servicesecurity

QoSQoS

Billing(probability that the

network accounts thecommunications bytype, destination,

Traffic performance

Resources andenvironment

Dependability(availability,reliability,

maintenance, support)

Transmission

NPNP

QQooSS8 5E2INITION8 5E2INITION

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Commercial offer Com4etition Trends

Users e94ectations in terms of QoS

Tecnical QoS

Network

performanceSales points

Customer

careTerminal

performance

Non:tecnical QoS

QUA.IT1 O2 SE-ICE AN5 USE- SATIS2ACTIONQUA.IT1 O2 SE-ICE AN5 USE- SATIS2ACTION

Users satisfaction


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I;- 7e!* A*860 < Frame%or o a servi!e level

a.reemen# = (2002)*

Formal deini#ion o a rela#ion be#%een 2 en#i#ies a# leas##e servi!e "rovider and is !'s#omer

onsis#s in+

e.al and inan!ial s"e!ii!a#ions

ervi!e level s"e!ii!a#ions (#e!ni!al)

S.A (SE-ICE .EE. A*-EE+ENT)S.A (SE-ICE .EE. A*-EE+ENT)

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o is #e de.ree o !onorman!e o #e servi!edelivered #o a 'ser b& a "rovider %i# an a.reemen#be#%een #em*

Negotiation Phase

Documentation PhaseImplementation Phase

Maintenance and Reporting

Phase

Satisfaction (user/provider)

Termination Phase

Yes

No



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Benerall& meas'red in a mon#l& base

7 (7o'nd ri" ime)

Pa!e# loss ra#io (meas'red b& "in. ICP)

ime "er!en#a.e+ #e s'bs!riber "or# is available #oeD!an.e #rai!

Bi.'e (dela& be#%een s'!!essive "a!e#s)*

am"lin. !an be a!ieved on a 5 min'#es basis #&"i!all&*


!%amples of S&' parameters

16

o !ri#eria in %ireless and mobili#& !on#eD#

9!!essibili#&

7eliabili#&

onne!#ion dela&

In#err'"#ions or dro" o servi!e d'e #o #e la! one#%or reso'r!es

Ne#%or !overa.e

7oamin. and and-Ever "erorman!e

oi!e 'ali#&

?a#a #ranser ro'."'#

In#ero"erabili#& be#%een dieren# area

S.AS.A AN5AN5 QQooSS IN -A5IO NET/O-; +OBI.EIN -A5IO NET/O-; +OBI.E


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e 'ali#& eD"erien!e (oA) is

deined as #e #radi#ional eD#ension

o #e o*

oA indi!a#es #e manner %i#

%i! servi!es are oered in #e

"oin# o vie% 'ser*

oA des!ribes o% a 'ser "er!eives #e 'sabili#& o aservi!e %en in 'se o% sa#isied e/se is %i# a servi!ein #erms o e*.* 'sabili#& a!!essibili#& re#ainabili#& andin#e.ri#&*

QQooEE CONCEPTCONCEPT

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oA is #e overall a!!e"#abili#& o an a""li!a#ion or

servi!e as "er!eived s'bje!#ivel& b& #e end-'ser*

'ali#& o AD"erien!e in!l'des #e !om"le#e end-#o-

end s&s#em ee!#s (!lien# #erminal ne#%or servi!es

inras#r'!#'re e#!*)* Everall a!!e"#abili#& ma& be

inl'en!ed b& 'ser eD"e!#a#ions and !on#eD#*

QQooEE 5E2INITION (ITU5E2INITION (ITU::T S*#


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QQooEE 5E2INITION (ITU5E2INITION (ITU::T S*#


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QQooSS IN5ICATO- C.ASSESIN5ICATO- C.ASSES

Indicators classes

Ne#%or a!!ess

ervi!e a!!ess

ervi!e in#e.ri#&

ervi!e s's#ainabili#&*

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Service Accessibility

Network Availability

Network Accessibility

Service Integrity

Service Retainability

USA*E P0ASES (USA*E P0ASES (USE-USE- POINT O2POINT O2 IE/)IE/)


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Load for a predefined QoS

System capacity QoS

System capacity for a

predefined load

QoS

-E.ATION-E.ATION QOSQOS @@ CAPACIT1CAPACIT1 @@ .OA5.OA5

Load for a predefined

Capacity

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CONTENTSCONTENTS

II% QoS criteria


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QOSQOS C-ITE-IAC-ITE-IA

QoS User criteria

lassi!all& (voi!e servi!e) 4 main !ri#eria allo%

'sers #o eval'a#e #e ne#%or 'ali#& o ervi!e+

overa.e

all es#ablismen#

oi!e 'ali#&

all dro"*

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QOS C-ITE-IAQOS C-ITE-IA

Qos O4erator evaluation

Coverae

anno# be assessed #ro'. #e s&s#em*

7adio meas'remen#s and s'bs!ribers

Communication uality durin te call

7adio meas'remen#s

&s#em meas'remen#s

oi!e 'ali#& anal&$ers

Successful call rate

&s#em meas'remen#s

Call dro4 rate

&s#em meas'remen#s


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onversa#ional 79,

#reamin. 79,

In#era!#ive 79, P/97P 1


,a!.ro'nd 79,

-NC $* **SN$*S*SN

A44licationserver

Node B

7

;ser "roiles are s#ored in 7*

Aa! 'ser !an ave several 'ser

"roiles %i! !orres"ond #o dieren#

servi!es and are ma""ed #o dieren#bearers a!!ordin. #o #e o"era#orGs

s#ra#e.&*

QOSQOS C-ITE-IA8 OPE-ATO- ST-ATE*1C-ITE-IA8 OPE-ATO- ST-ATE*1

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E"era#or !an "rovide+

User differentiation %i# #e

a##rib'#ion o o "roiles #o

dieren# 'sers

Service differentiation %i#

!orres"ondin. #o ea! servi!e #e

!orres"ondin. s'""or# a!!ordin. #o

servi!es !ara!#eris#i!s*

o a#isa!#ion o dieren# 'sers

needed

o 9llo!a#ion o #e re'ired

'ali#& o servi!e

o ;sa.e o"#imi$a#ion o

ne#%or reso'r!es

QOSQOS C-ITE-IA8 OPE-ATO- ST-ATE*1C-ITE-IA8 OPE-ATO- ST-ATE*1


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Qalit) of Ser*ice + o*era-e

ITU Rec "##+ "robabili#& #a# #e 'ser

re!eives a si.nal in s"e!ii! !ondi#ions

Reasons.'ctions+

N'mber o si#es

Posi#ion o #e si#es

9n#ennas #&"e dire!#ion and ei.# (7F

design)

E'#"'# "o%er and !able losses

(ins#alla#ion or main#enan!e)*

QOSQOS C-ITE-IAC-ITE-IA

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Qalit) of Ser*ice + Sccessfl call rates

ITU Rec "## + "robabili#& #a# a servi!e!an be ob#ained b& #e 'ser in !er#aino"era#ional !ondi#ions

Reasons.'ctions+

Cinim'm a!!ess level in #e !ell

?ieren!e be#%een #e dimensionin. o

#e reso'r!es and #e oered #rai!

In#ereren!es

7adio !overa.e

QOS C-ITE-IAQOS C-ITE-IA


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CONTENTSCONTENTS

III% Test8 Evaluation of te QoS

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1- overa.e BC BP7 A?BA ;C

2- Ceas'remen#s 'ali#& o servi!e voi!e

9!!essibili#&

Cain#ainabili#& o !omm'ni!a#ion oi!e 'ali#&

3- 'ali#& o servi!e C

4- 'ali#& o servi!e ?99

CC

H9P

FP

T)pe of tests

TEST8TEST8 EA.UATION O2 T0EEA.UATION O2 T0E QOSQOS


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Aval'a#ion o #e !overa.e (in!ar indoor o'#door)

Ceas'remen#s in Idle mode

In ?edi!a#ed mode #e "o%er !on#rol dis#or#s #e

res'l#s

resold level o !overa.e+

Threshold Indoor Incar Outdoor

Values - 67dbm - 87dbm - 90dbm


o*era-e

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alibra#ion o si.nal level s#ren.#

Ne!essar& e'i"men#s+ meas'remen#s #ools

Ceas'remen#s #&"e+ i#& 7o'#e #rain Indoor

+easurements tools8

a"#o"

o#%are

BPra!e mobile



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'ccessibilit) e*alation from a re-lator point of *iew

/et0od

!ond'!# several !all a##em"#s s"a!ed %i# 30 se!ondsminim'm

Ceas're And o And b& inves#i.a#ors or ?rive #es#!am"ai.n

resold blo!a.e ra#e a# b's& o'r+ 2

'ccessibilit) rate n'mber s'!!ess'l o !omm'ni!a#ions

(dela& o !onne!#ion J 10s )/#o#al !all a##em"#s n'mber


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!%ample+ bad !omm'ni!a#ion 'ali#&*

Reasons.'ctions1

AD#ernal in#ereren!es

o-!annel or adja!en# !annel in#ereren!es

E'#-o-!overa.e

,ad ins#alla#ion

ransmission ne#%or (eD*+ e!o !an!eller or #r'ns)*

Qalit) of Ser*ice + 2oice 3alit)



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2oice Qalit) measrements principle


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/ain factors impactin- t0e 2oice Qalit)



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I;- P*800 re!ommenda#ion

A&solute Cateory -atin (AC-)8

AD!ellen# (5)

Bood (4)

Fair (3)

Poor (2)

,ad (1)*


2oice Qalit) measrements

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Qalit) of Ser*ice + all droppin-


Reasons.'ctions1

overa.e

In#ereren!e

andover "roblems

7adio "arame#ers lo!al#'nin.


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Qalit) of Ser*ice + //S 3alit)

TEST8TEST8 EA.UATION O2 T0E QOSEA.UATION O2 T0E QOS

onsis# in an eD!an.e o C be#%een

#%o 'sers e'i"men#s ( #ransmi##er- re!eiver)

e eval'a#ion indi!a#ors are+

K Fail're ra#io

K N'mber o errored messa.es

K ?ela& o re!e"#ion( J30s 30 2 min'#es L 2 min'#es)*

K 9vera.e re!e"#ion dela&

42



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Qalit) of Ser*ice + //S 3alit)


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Qalit) of Ser*ice + 4ata ( 5TP$



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!%ample of measrements


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0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Nouakchott

Nouadhibo

AxeNK

C/ND

AxeRo

sso

Faiblesse (Rxlev< -94 dBm)

(-94 dBm


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!%ample of measrements


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CONTENTSCONTENTS

I% Quality of Service in *S+,*P-SQuality of Service in *S+,*P-S


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4>

Interfaces Blockin- rate

;m/ 2 (1 #o 5)

;m/? 0*1 (0 #o 1)

BC-7 0*5 (0*1 #o 1)

9 0*1 (0 #o 1)

9bis 0

9#er 0*1 (0 #o 1)

GS/ GoS (t)pical *ales$

QUA.IT1 O2 SE-ICE IN *S+,*P-SQUA.IT1 O2 SE-ICE IN *S+,*P-S

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Indicators Outdoor Indoor Incar

Bloc7ae rate J 2 J 2 J 2

5ro44ed rate J 2 J 2 J 2

Po6er in dBm - >0 - 6 - 8

E '!!ess ra#e L >0

'ali#& 7M;9 J 4 or >5 #e sam"les



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QoS 4rofile (limitation &y tetrou4ut class su44orted &y

te client)QoS services

Priorityclasses

ervi!e main#ain in !ase omal'n!#ionin.+

1* i. "riori#&

2* Cedi'm "riori#&3* o% "riori#&*

Pa!e# "riori#&+

1* i.+ onserve "a!e# in !ase o!on.es#ion

2* Normal+ onserve "a!e# a#er #ose%i# i. "riori#&

3* o%+ Alimina#e "a!e# in !ase o a"roblem*

-elia&ilityclasses

7esid'al error !orre!#ion (?a#aloss error da#a :)+

1* IP s'bs!ri"#ion2* 'bs!ri"#ion < %i#o'# errorsensi#ivi#& =*

Probabili#& loss d'"li!a#ion :+1* ensi#ive #o errors %i#o'#!orre!#ion !a"a!i#& limi#a#ion o error#oleran!e2* ensi#ive #o errors limi#a#ion!orre!#ion !a"a!i#& .ood #oleran!e

3* ensi#ive #o errors .ood !orre!#ion!a"a!i#& or ver& .ood #oleran!e


GPRS (QoS indicators$

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QoS 4arameters of a P5P conte9t8

Pre!eden!e !lass+ 1 2 e# 3 (1as "riori#&)

?ela& lass+ 1-4 (4 bes# eor#)

7eliabili#& !lass+

1+ BP 9 9/"ro#e!#ed 7 9

2+ BP ;N9 9/"ro#e!#ed 7 9

3+ BP ;N9 ;N9/"ro#e!#ed 7 9

4+ BP ;N9 ;N9/"ro#e!#ed 7 ;N9

5+ BP ;N9 ;N9/non-"ro#e!#ed 7 ;N9

CaDim'm #ro'."'# !lass+ 1-> (8 O 2 048 b/s)

Cedi'm #ro'."'# !lass+ 1-1> (022 bi#s/s O 111 b/s)

QoS GPRS profile (R67.R6"$



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Ene "roile "er os ?P? !on#eD#

os "roile "arame#ers non de#ailed in #e s#andard

on#rol reso'r!es #ools in #e , are limi#ed (bes# eor# in

release 1)

Pre!eden!e "er !on#eD# P?P*

7>/7>8 E in !ase o lo% load "er !ell*


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*P-S -8 Su&set of QoS 4rofile $*PP

9llo!a#ion/re#en#ion "riori#& (97P)

rai! !lass rai! andlin. "riori#& (P)

o In#era!#ive+ P1-3o ,a!.ro'nd*

7eliabili#& "arame#ers+

o 7esid'al ,A7

o ?; error ra#e

o ?; deliver& %i# error*

CaDim'm #ro'."'#


QoS GPRS profile (R66$


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ervi!es+

o H9P

o CC+ #eD# ima.es video !li"s*

Amail

?o%nloadin.

:


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I#em AD!ellen# Bood 9vera.e ,es# Aor#

+OS 4-5 3*8-4*2 2*>-3*8 2-2*>

Call

esta&lisment

delay

J 1*5 se!* 1*5 3

se!*

L 3 se!* L 3 se!*

-ound:tri4 delay

(ms)

J 150 150 250 250

450

L 450

itter (ms) J 1 J 18 L 18 L 80

Pac7et loss (D) J 1 J 5 J 10 J 10

8t0er QoS indicators



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Transmission dela)

FiDed ne#%or (PN)+ 35 mse! end-#o-end

Node , 7N Q3BPPR+ J 10 ms

;79N (real #ime servi!es)+ J 5 ms

;79N (non real #ime servi!es)+ J 10 ms

7adio in#era!e+ 0-80 mse! in ea! dire!#ion*

&oss rate

;79N+ J 10-4 (real #ime #rai!) 10- (non real #ime#rai!)


58

Rond9trip transmission dela)s for IP packets

BP7+ 650 ms

A?BA (7>>)+ 300-500 ms

;C+ 200 ms*



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5>

Indicators Tresold

?ro""ed !all 2

?ro""ed !all ( ard%are !a'ses) 1

?ro""ed !all ( 7adio !a'ses) 2

?ro""ed E 1

,lo!a.e 2

,lo!a.e ? 05

all s'!!ess es#ablismen# >5

E (bes# !ell) 50

E ('ali#&) 30

E (s#ren.# si.nal level) 20

E (in#ereren!e) 1

E (s'!!ess) >0


60

Averae data

trou4ut

Ne#%or !overa.e divided in#o "iDels %i# #e samesi$e (, !loses "iDels o #e i.es# #ro'."'# #o#ose o !ell border)* 9vera.e #ro'."'#9vera.eo all "iDels

D of datatrou4ut

ro'."'# !al!'la#ion "iDel b& "iDel*

Cinim'm #ro'."'# minim'm ro'."'#rea!ed b& leas# D o "iDels(eD*+ 50 >0 >5)*

+inimum

uaranteed

trou4ut

Cinim'm .'aran#eed #ro'."'# %i# a "robabili#&or a s"e!ii! area

4ata t0ro-0pt calclation



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A44lication trou4ut

(en 7&,s)

Performance 4arameters and taret values

And #o end

dela&

@i##er Inorma#ion

loss

oi!e 4 25J 150 ms

CaD+ 400 ms

J 1 ms J 3 FA7

CaD+ 5

ideo "one 32 384

J 150 ms

CaD+ 400 ms

&n!ro* J 100

ms

J 1 FA7

eleme#r& J 288 J 250 ms / 0

on*ersational real time ser*ices percei*ed b) sers


62

oice service Pac7et data services (*P-S,E*P-S)

Avalibilibiliy of service or non Avaliability service with uality certain uality

Distance MS-BTS

Service quality

Distance MS-BTS

Service quality

!*oltion 2oice QoS94ata QoS



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CONTENTSCONTENTS

% Quality of ServiceQuality of Service in U+TSin U+TS

64

Traffic classes Conversational Streamin Interactive Bac7round

+ain

caracteristics

Cinim'm j i##er

o% dela&

Cinim'm

ji##er

'es#ion/res"onse

mode

Cinimi$es #e errors

No dela&

!ons#rain#s

Cinimi$es #eerrors

E9am4le oi!e ideo Heb bro%sin. Amails

U/TS QoS classes

QUA.IT1 O2 SE-ICE IN U+TSQUA.IT1 O2 SE-ICE IN U+TS


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K 7eal #ime !omm'ni!a#ions

K oi!e

K eD#

K ideo

K Non real #ime !omm'ni!a#ions

K 9'dio s#reamin.

K ideo s#reamin.

K ?a#a iles

K eD# messa.in. (eD* C)

K Amail

K Heb bro%sin.

K C'l#imedia messa.in.

/ltimedia ser*ices


66

Traffic class onversa#ion* #reamin. In#era!#ive ,a!.ro'nd

ma9imum trou4ut (7&,s)J 2048

scedulin Ses / No

ma9% S5U siFe (octets) 1 500 or 1 502Corru4ted S5U delivery Ses/No

residual BE-

5T10-2 10-2 5T10-3

10-4 10-65T10-2 10-2

5T10-3 10-3

10-4 10-5 10-6

4T10-3 10-

5 6T10-84T10-3 10-5

6T10-8

S5U error rate

10-2 T10-3 10-3 10-

4 10-510-1 10-2

T10-3 10-3

10-4 10-5

10-3 10-4

10-6

10-3 10-4 10-

6

transfer delay (ms)

100 maDim'm

val'e

250

maDim'm

val'e

Some *ales of QoS U/TS parameters classes



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6

And #o end servi!es 'sed b& #erminal (A erminal A'i"men#)a!ieved b& #e !ombina#ion o+

U+TS Bearer Service8 deined b& #e 79, (7adio 9!!ess ,earer) and#e servi!e o N (ore Ne#%or)

Service -AB8 oniden#ial #rans"or# o #e si.nalin. and da#a be#%eenC e# N* ervi!es based on radio in#era!e !ara!#eris#i!s *

Service su44ort CN8 !on#rol and 'sa.e o !ore ne#%or*

-adio su44ort (-B)8 !overs all #rans"or# as"e!#s o radio in#era!e* es'""or# servi!e I' "rovide #rans"or# be#%een ;79N and N*


QoS U/TS classes

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TE MTUTRAN

TECN

gtwCN Iu Edge

Node

End to end services

ExternalService

Support

Service support UMTSSupportTE/MT

Radio servicesupport

ServiceUTRA

FDD/TDD

ServiceSupport Iu

PhysiqueServiceSupport

RAB service

ServiceSupport

Backbone

Servicesupport CN

RRM

GTP Packets

ATM: manage ATM

traffic and division in cells

RNCNode B

CN

QUA.IT1 O2 SE-ICE INQUA.IT1 O2 SE-ICE IN U+TS8 A-C0ITECTU-E +O5E.U+TS8 A-C0ITECTU-E +O5E.


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1

QoS attri&uts - alues e9am4le

7esid'al ,A7 10 5

?; error ra#io 10 4

?eliver& o erraneo's ?;s No

CaDim'm ?; si$e (o!#e#s) 1500

?eliver& order No

ranser dela& 100 ms (!onversa#ional)

280 ms (s#reamin.)

97P 1 2 or 3

rai! !lasses onversa#ional s#reamin.in#era!#ive ba!.ro'nd

P 1 2 or 3 (same as 97P)

CaDim'm bi# ra#e e*.* 64 128 or 384 b"s

CaDim'm .'aran#eed bi# ra#e e*.* 64 128 or 384 b"s

Depends onoperator strategy

Depends on QoS

strategy andcapacity

of UE/RNC


2

onversa#ional 79,

#reamin. 79,In#era!#ive 79, P/97P 1


,a!.ro'nd 79,

++S

/e&

&ro6sin

Pus:to:tal7

Streamin

ideo

tele4ony

T0P G Traffic 0andlin Priority

A-P G Allocation and retention 4riority


QoS traffic differentiation


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3

CONTENTSCONTENTS

I% Quality of ServiceQuality of Service in .TEin .TE

4

e #rai! r'nnin. be#%een a "ar#i!'lar !lien# a""li!a#ion and aservi!e !an be dieren#ia#ed in#o se"ara#e servi!e da#a lo%s(?Fs)

?Fs ma""ed #o #e same bearer re!eive a !ommon o#rea#men#

QUA.IT1 O2 SE-ICE INQUA.IT1 O2 SE-ICE IN .TE.TE

&T! QoS 5ramework


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9 bearer is assi.ned a s!alar val'e reerred #o as a o !lass

iden#iier (I)

B'aran#eed bi# ra#e (B,7)

Non-.'aran#eed bi# ra#e (non-B,7)

9 non-B,7 bearer is reerred #o as #e dea'l# bearer

%i! is also 'sed #o es#ablis IP !onne!#ivi#&*


&T! bearer

6

o !lass iden#iier (I)

9 s!alar re"resen#in. a se# o "a!e# or%ardin. #rea#men#s

9llo!a#ion and re#en#ion "riori#& (97P)

9 "arame#er 'sed b& !all admission !on#rol and overload!on#rol

CaDim'm bi# ra#e (C,7)

B'aran#eed bi# ra#e (B,A)

9..re.a#e C,7 (9C,7)

e #o#al amo'n# o bi# ra#e o a .ro'" o non-B,7 bearers


QoS attribtes associated wit0 t0e &T! bearer


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&T! standardi:ed QI c0aracteristics

8

e A air in#era!e s!ed'ler 'ses #e ollo%in. inorma#ion

as in"'#

7adio !ondi#ions a# #e ;A iden#iied

e o a##rib'#es o bearers

e in#ereren!e si#'a#ion in #e nei.borin. !ells


&T! 'ir Interface Sc0edler


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>

e b'er s#a#'s re"or#in. me!anism inorms #e ; "a!e#

s!ed'ler abo'# #e amo'n# o b'ered da#a a# #e ;A

9 "eriodi! ,7 #ri..er does no# !a'se a servi!e re'es#(7) #ransmission rom #e ;A

E#er%ise #e 7 is #ransmi##ed via a random a!!ess

"ro!ed're or# orma# !an be 'sed #o re"or# on one radio

bearer .ro'"

on. orma# one !an be 'sed or o'r .ro'"s


Bffer Stats Reportin-

80

CONTENTSCONTENTS

II% SummarySummary


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SummarySummary

Summary

ario's s!emes ave been seen or

main#ainin. o in !ell'lar Ne#%ors and ea!

as i#s advan#a.es and disadvan#a.es

C'l#imedia servi!es are dela& sensi#ive and

re'ire i. band%id#*

7ene.o#ia#ion and !annel re'se are .ood

#e!ni'es #o ass're be##er o and i. da#ara#e

82

Tan7Tan7 youyou

Day3_ Session13_uality of Service (QoS) Definition and Standards

Documents