3gg chnnel concept pdf

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Design and Performance

Analysis for radio planningnetwork



SupervisorsSupervisorsAssistant Prof .. Sherif Elsayed

Kishk Eng. Fahmy A. Khalifa

By /EngAhmed Hamed

Department of Eletronis andDepartment of Eletronis and!ommuniation!ommuniationFaulty of EngineeringFaulty of Engineering

"ansoura #niversity"ansoura #niversity$%%&$%%&



!ontents

Project Motivation.

UMTS Architecture.

UMTS Issues.

System Model and Assumptions.

Uplink Admission and Handoff

Procedure. Simulation Results.

summary.



Project Motivation



UMTS system is considered as one ofthe most common ! standards.

UMTS capacity is interference "ased #so its important to reach optimumdesi$n to $et "est performance.

Project Motivation



Pro'et "otivation %cont&d'

("jective)Ho( to )uild the program to design

and simulate radio planning

system.Performance Metrics)

*he total system apaity.

Pro)a)ility of ongoing alls )eingdropped.

Pro)a)ility of inoming alls )eing)loked.



#"*S Arhiteture



#"*S Arhiteture

• System *eatures The UMTS operates in two modes FDD and

TDD.



#"*S Arhiteture%cont&d'• The UMTS architecture at the very

hi$hest level) – User +,uipment %U+'.

– UMTS Terrestrial Radio Access -etork%UTRA-'.

– /ore netork.



#"*S Arhiteture+ont,d-UMTS Su"scri"er Identity

Module %USIM' .

Mo"ile Terminal %M+'.-ode 0.Radio -etork /ontroller%R-/'.Mo"ile Sitchin$ /enter%MS/-.Home 1ocation Re$ister%H1R'.2isitor 1ocation Re$ister%21R'.

+,uipment IdentityRe$ister %+IR'.Authentication /enter%AU/'.!!S- %!ateay !PRS

Support -ode'.S!S- %Servin$ !PRS%!eneral Packet Radio



User +,uipment %U+'U+ consist of to parts)

Mo"ile Terminal%Handset' 3ma4output poer of 56.

UMTS Su"scri"erIdentity Module %USIM'is a smart card that

stores information a"outthe su"scri"er such as)

MSIS7-) Mo"ile StationInte$rated Service 7ata-etork.

IMSI) International

Mo"ile Su"scri"erIdentity. TMSI) Temporary Mo"ile

Su"scri"er Identity. IM+I) International

Mo"ile +,uipmentIdentity.



#"*S *errestrial adio Aess et(ork+#*A-



adio et(ork!ontroller +!-

Serving and Drift !s



!ore et(orkArhiteture



Interfaces

• A 0nterfae

This interface e4ists "eteen the MS/and

the 0S/ and it is a pure !SM interface.

• 0u 0nterfae

This interface connects the core netork

and the UMTS Radio Access -etork.• 0u) 0nterfae

This interface is situated "eteen the

R-/



• 0ur 0nterfae The Iur interface connects toradio

netork controllers.

• 1) 0nterfae The !" interface connects the

packet8sitched core netork

to the !SM netork.

Interfaces

cont.



MAP Interfaces

*ypes of "AP 0nterfaes2

1f ) fraud interface.

1p ) P1M- interface1n ) node interface .

1) ) "ase interface.

1i )Internet interface.

1 ) conte4t interface.



UMTS Issues

/hannels Types

Poer /ontrol

Handoff



Physical /hannels

7edicated /hannels /ommon /hannels

UMTS /hannels

transport /hannels



Physical /hannels)Physical /hannels)

carrier fre,uency# code# relative phase

Main ! Re,uirements on Physical 1ayer)Main ! Re,uirements on Physical 1ayer)

Hi$h "it rates up to 5 M"ps

0andidth8(n87emand 9 *le4i"levaria"le "it rate

Hi$h spectral efficiency# especially in

donlink Tasks of physical layer)

+rror protection and detection.

/ontrol soft handover and poer control.

Mappin$ transport ch to physical ch.



Uplink Physical Channels

Dedicated uplink physical channels

Common Uplink physical channels

Downlink physical channel

Dedicated physical channels Common physical channels



Frame Struture for #plink

DPD!H/DP!!H



PRA/H : Physical Random8Access/hannel.

PRA/H is used to carry RA/H.

Aess Slots



Frame Struture for Do(nlink DP!H

7P/H : 7edicated physical channels



//P/H : Primary /ommon /ontrol Physical /hannel

Frame Struture for primary !ommon !ontrol physial!hannel



Frame Struture for Seondary !ommon !ontrol

physial !hannel

/H : secondary /ommon /ontrol Physical /hannel



This channel is used "y mo"ile stations forcell search.

There are to synchroni;ation channels 3the primary and the secondary. The primary synchroni;ation channel

transmits a modulated code# called the primary synchronization code.

+very cell in a UTRA- uses the sameprimary synchroni;ation code.

The secondary S/H is constructed "yrepeatin$ a se,uence of modulated codesof 5<= chips and is transmitted in parallelith the primary S/H.



*ransport !hannel to physial !hannel "apping



Transport channels) Transport channels) They are defined on the "asis of the types of

information they transfer and ho it is

transferred on the radio interface.



7edicated Transport /hannels)8D!H 3 Dediated !hannel D!H

– Full douple4 hannel.

– arry ontrol information )et(een the net(orkand mo)ile station .

– It controls %call setup# "illin$# handover# poer#>>'• SD!!H 3 Stand5Alone Dediated !ontrol !hannel

– Full douple4 hannel.

– #sed for servie re6uests.

– 0nitiate all setup.

D*!H 3 Dediated *raffi !hannel

Full douple4 hannel

During all setup the net(ork takes the SD!!Hand gives the D*!H to the su)sri)er to an

send speeh or data.



/ommon Transport /hannels)8

• Broadast !hannel +B!H- )

7.1 transport channel.cell8specific parameters such as random accesscodes# access slots in a cell# or diversity typesused.

carries UTRA- system.

Paging !hannel +P!H-2

D.7 transport hannel .

*o inform the su)sri)er of an inomingall.

andom Aess !hannel

+A!H-2 – #.7 transport hannel8 availa)le only in the

FDD mode.

– #sed to re6uest a hannel for a onnetion.

• For(ard Aess !hannel +FA!H-2

– D.7 transport hannel.



(ther Transport /hannels)8

/ommon Packet /hannel %/P/H'uplink transport channel .carry packet data from a user.

7onlink Shared /hannel %7S/H'donlink transport channel.carries user data and control information.

Uplink Shared /hannel %US/H'only used in the T77 mode.carry "oth control and user data.



Po(er !ontrol in #"*S

Po(er ontrol is very importantPo(er ontrol is very importantfor #"*S 2for #"*S 2? Minimi;e the interference in the system.

? All si$nal arrives at "ase station&sreceiver ith the

same si$nal poer.

? Solve -ear8far pro"lem.

-ear8far effect in the u link direction



Po(er !ontrol in #"*S

*ypes of po(er ontrol2*ypes of po(er ontrol2

A. (pen loop poer control



0.0. /losed loop poer control

/./. Inner loop poer control



Handover

Is the process in hich a cellular phone

is handed from one cell to

the ne4t in order to maintain a radio

connection ith the netork.

*ypes of Handover2

?Hard Handover %!SM'.

?Soft Handover %UMTS'.

?Softer Handover %Sectors'.



Admission !ontrol +A!-

? Admission /ontrol occurs henne connection is set up asell as handover.

?Ac needs to check thatadmittance ill not sacrifice theplanned covera$e area or

e4istin$ connection.



Admission !ontrol +A!-

Ac al$orithm estimates the load thatthe esta"lishment of the "earerould

cause in the netork.

7 d ! t l +! ti



7oad !ontrol +!ongestion!ontrol-

? It&s important to ensure that systemis not

overloaded and remains sta"le.

? The possi"le load control actions inorder to

reduce load

? 71 fast load control %deny 71 poer

up command'.? U1 fast load control %reduce the

+"@-o tar$et'.

? Handover to another 6/7MA carrier.&

7 d ! t l +! ti



7oad !ontrol +!ongestion!ontrol-



HSPA

• Hi$h Speed Donlink Packet Access.

• Hi$h Speed #plink Packet Access.

• HS9PA.



*ehnologial approah

easons to deployHSDPA2

• Saturated voicecommunicationmarket

• !roin$ demand anduser e4pectation forthe data services like"road"and internetaccess# streamin$#

$amin$# etc.• /ompetin$ Hi$h

Speed irelesstechnolo$ies)

8 61A-

8 6iMA



Shorter time transmission interval+**0-• HSDPA introdues short **0

onept8 (here **0:$ms.

• Advantages2 81ess pro"a"ility of an error due to

the chan$e of the channelconditions .

8More efficient hen packetretransmission is necessary.

87ecreased "uffer si;e.

• A; mehanism is plaed in!+el,<<-2 8Disadvantage2 latency time up

to BCC msD

8Solution2 move it to node 0.8Profit2 latency "elo BC ms

• Sheduling is ontrolled )y

!+el,<<-2 8Disadvantage2 important

channel measurementinformation can "e delayed.

8Solution2 move schedulin$ closeto the air interface.

8Profit2 reschedulin$ is made

ithin a short time.



Adaptive "odulation and!oding +A"!-

• "ain priniple 3todynamially modifySi$nal modulation and/odin$ scheme toompensate the

variations in annelonditions.• Benefits2 8Increased avera$e

cell throu$hput

8Reduced interferencevariation

8Hi$her data rates forusers in favoura"lepositions.



HA;

H-AR-type-!!!H-AR-type-!!



/hannel



HSUPA

• To enhance theuplink performance.

• The key difference"eteen uplink and

donlink is thehandlin$ of the totaltransmission poerresource.

• The poer controlcannot "e a"andonedin the case ofcontinuous uplinktransmission due to

the near:far pro"lem.



HS(PA

• (*7M divides the si$nal into severalnarro8"and su"8carriers hich aredesi$ned to "e narroer than thecoherence "andidth of the ireless

propa$ation channel.• Uses (rtho$onal *re,uency 7ivision

Multiple4in$ %(*7M' and multiple8inputmultiple8output %MIM(' antenna.

• *le4i"le "andidth usa$e ith B.5< MH; to5C MH; "andidths. 0y comparison# 68/7MA uses fi4ed si;e < MH; chunks of

spectrum.



• HS(PA ill use (*7MA for the don8link andSin$le /arrier *7MA %S/8*7MA' for the up8link# [email protected]=e85CC< uses (*7MA for"oth the up and don links.

• *or 6iMa4# HS7PA serves as a form ofcompetition thatLs not as fast. 6iMa4promises speeds of up to JCM"ps# "ut muchmore mo"ile.

• HS7PA ill allo to increase donlinkthrou$hput and# in turn# offer advanced,uality of service %EoS' capa"ilities andspeeds that rival those delivered "y ca"lemodem and 7S1 service providers.



Simulation



system considerations

The pro$ram is initiated "y anum"er of usersRandom uniform velocity

distri"ution 2t #

Uniform random directionsC5N# Uniform random locations

%#O'#Uniform random call duration /t

-um"er of the servin$ "asestation and the correspondin$

path $ain P$



System model

!ell mem)ershipPath Gain Criterion.

Users select the "ase stationUsers select the "ase station

to hich it has the lar$estto hich it has the lar$estpath $ainpath $ain

/ell 1oad /riterionUsers select the "ase stationUsers select the "ase station

ith the smallest num"er ofith the smallest num"er of

users.users.



System model

+ach cell supplies covera$e andservice to a specific num"er ofusers.Users %MS' are uniformly

distri"uted ithin the unit areas.(nly the uplink is considered. The system performance is

determined "y a constraint onthe Si$nal8to8Interference Ratio%SIR' at all 0Ss.A threshold value of SIR for all

users in the system is re,uired

to maintain the accepta"le EoS.



System model

+ach user in the environment isprocessed "y only one 0S.

/ell mem"ership is determinedaccordin$ to the path $ain.

The system employ perfect uplink

poer control % That is mean the received si$nal

poer from all users in the systemis the same



#plink Performane

n

t r

d

dok P P

⋅=

Propa$ation Model

Simplified Propa$ationModel

=

!

"!#

lo$%!&d

dBk π

λ



#plink Performane

outcell incell P

Gr

I I N

P S SIR

++

⋅=

b

G RW

atedataratechip P ==

r

The uplink SIR

6here Sr is the received si$nalpoer. P! is the system processin$

$ain. -p is 0ack$round -oise poer

Iincell is the in8cell interferenceIoutcell is the out8of8cellinterference

Uplink admission and



Uplink admission andhandoffUsers select "ase station

accordin$ to a predefined path$ain criteria

-e call re,uests as ell as the

handoff re,uests are ,ueued%one second len$th ,ueue'

A ne user ill "e admitted aslon$ as its SIR is a"ove the

systems& SIRmin and those of allusers are also a"ove theminimum threshold

Handoff re,uests are prioriti;ed

than ne call re,uests



[Flowchart]



Simulation result



System apaity

0l ki f



0lockin$ of ne user

3gg chnnel concept pdf

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