02 6220 UMTS RNP Fundamentals E08

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Copyright All rights reserved TA -TC 6220 E08TECHCOM Consulting

Contents

Introduction: Radio Interface Evolution UMTS Fundamentals concerning Radio Network Planning RNP UMTS RRM & RNP Link Budget & Coverage Calculation Load & Capacity Calculation Improving Coverage & Capacity UMTS and GSM co-planning Multi-Operator-Interference UMTS Air Interface - Measurement Exercises & Examples Appendix 1: Literature & Abbreviations Appendix 2: NetTek Analyzer YBT250 Appendix 3: HSDPA Coverage Planning

UMTS Radio Network Planning & Measurements

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Content

UMTS Architecture UTRA: Coordination & Key Parameter UTRA: Codes UTRA: Logical, Transport & Physical Channels

UMTS Fundamentals concerning RNP

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Content



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UMTS Network (Rel. 99)

PSTN

ISDN

PDNe.g. Internet,

Intranet

IW: InterworkingTC: Transcoding

Gb

Iu(PS)Gi

Iu(CS)

A

Gn

GSM BSS

Iur

UE=ME+

USIM

Uu

Um

Externalnetworks

GMSCMSC

VLR

AuCHLREIRCSE

GGSNSGSN

IW &TCBSC

& PCU

TRAU

RNC

RNC

UTRAN

BTS

BTS

Abis

Node B

Iub

NodeB

Iub

Node B

UMTS specific CN modification: Transcoding-function TC in CN ATM-based Iu interface enhanced security mechanism & keys (AuC) harmonised CS & PS MM-cycles (VLR/SGSN) no ciphering & data compression in SGSN

TS 23.002

Gr

GfGe

FC / D

Gc

CAP

IP

BillingSystem

E

CGF

Ga

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Copyright All rights reserved TA -TC 6120 01/2005TECHCOM Consulting Copyright All rights reserved TA -TC 6220 E08TECHCOM Consulting

TECHCOM Consulting TECHCOM Consulting

TECHCOM Consulting

UMTS Network (Rel. 99)The UMTS Network consists of an enhancedGSM & GPRS Core Network (CS & PS Domain)and the UMTS Terrestrial Radio Network UTRAN.The UMTS CS & PS domain consists of thefollowing network elements, which are knownfrom GSM (Rel. 99):- MSC & VLR- HLR & AuC- EIR (optional)- SGSN- GGSN- CGFUMTS specific CN modification are:- Transcoding-function TC (AMR speechcompression) in CN

- ATM-based Iu interface- enhanced security mechanism & keys (AuC)- harmonised CS & PS MM-cycles (VLR/SGSN)

- no ciphering & data compression in SGSN

Different application platforms can be added to theCore Network, e.g. the CAMEL Service EnvironmentCSE for non-proprietary Intelligent Network services.UTRAN consists of:- the Radio Network Controller RNC, which isresponsible for all Radio Resource ManagementRRM aspects

- the Node B, which is responsible for Physical Layerconversion (ATM cells WCDMA transmission)

The UMTS Mobile User Equipment UE consists of:- Mobile Equipment ME (for HF transmission)- UMTS SIM card, for all user-specific & securityrelated aspects

An overview according to the UMTS network can befound in TS 23.002.

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UTRAN

GSMPhase 2+

Core Network

MSC/VLRSGSN

Node B

RNCRadio

NetworkController

RNCNode B

Node B

traffic & signalingUMTS Terrestrial Radio Access NetworkUMTS Terrestrial Radio Access Network

Iub

Iub

Iur Iu(cs/ps)

UuUEUser

Equipment

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UTRAN: UMTS Terrestrial Radio AccessNetworkThe network elements of UTRAN are:- the Radio Network Controller RNC- the Node BThe UTRAN network elements are connected toeach other respectively to external UMTS networkelements via the interfaces:- Iu(CS): RNC MSC- Iu(PS): RNC SGSN- Iub: RNC Node B- Iur: RNC RNC- Uu: Radio InterfaceIu(CS), Iu(PS), Iur & Iub are ATM basedinterfaces. An UTRAN description as well as anoverview according to the Iu-interfaces can befound in TS 25.401 (UTRAN Overall Description).An overview on the WCDMA air interface Uu can

be found in the TS 25.201 (Physical layer - Generaldescription) & 25.301 (Radio Interface ProtocolArchitecture).

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GSM & UMTS Evolution

Iub

Iub

Iub

Iur

Node B

Node B

Node B

RNC

Iu

S-RNCserves for RAB: Resource Allocation HO Decisions S-RNS Relocation SHO combining/splitting Active Set (CGI / URA) Signalling via Iu,Iub,Iur & Uu

Header Compression Integrity Check Ciphering BEC ...

D-RNC RR Allocation

UTRAN: TS 25.401

Core Network CN

RNC

RNC functions: autonomous RRM ATM Switching & Multiplexing Control over RNS O&M Interface

Iu

BEC: Backward Error CorrectionCGI: Cell Global IdentityURA: UTRAN Registration Area

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Node B

Iub

Node B

RNC

Node B: Physical node - connected via Uu / Iub support of 1 / several cells FDD &/or TDD Mode operation ATM Termination (Iub) Data conversion for reliableUU transmission

Inner Loop Power Control measures RL quality & strength determines BER & BLER Measurement reports to RNC FDD: Micro-Diversity (SHO)

Uu

BER: Bit Error RateBLER: Block Error RateRL: Radio LinkSHO: Soft Handover

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User Equipment UE

Node B

RNC

MSC/VLR / EIRSGSN

UE as Node B Counterpart: FEC (Encoding & Interleaving) Power Control (Open & Inner Loop) Radio Measurement (BER, SIR, Quality & Power) Spreading / De-Spreading Modulation / De-Modulation

UE as Node B Counterpart: FEC (Encoding & Interleaving) Power Control (Open & Inner Loop) Radio Measurement (BER, SIR, Quality & Power) Spreading / De-Spreading Modulation / De-Modulation

UEUE as RNC Counterpart:

BEC (Acknowledged Mode; NRT) RRC (Radio Resource Control) Handover (CS) & Cell Selection (PS) De- / Ciphering & Integrity Check Header (De-) Compression ...

UE as RNC Counterpart: BEC (Acknowledged Mode; NRT) RRC (Radio Resource Control) Handover (CS) & Cell Selection (PS) De- / Ciphering & Integrity Check Header (De-) Compression ...

UE as CN Counterpart: Mobility Management (Location Registration,Authentication, IMEI Check, Attach / Detach)

Session Management (PDP Context De-/Activation) Bearer Negotiation / Service Request ...

UE as CN Counterpart: Mobility Management (Location Registration,Authentication, IMEI Check, Attach / Detach)

Session Management (PDP Context De-/Activation) Bearer Negotiation / Service Request ...

UE

BEC: Backward Error CorrectionRRC: Radio Resource ControlSIR: Signal to Interference RatioPDP: Packet Data Protocol

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Content



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WARC92 & Worldwide UMTS Frequency Ranges1850 1900 1950 2000 2050 2100 2150 2200 2250

1850 1900 1950 2000 2050 2100 2150 2250

1885 MHz 2025 MHz

MSSIMT 2000

MSSIMT-2000GSM 1800DECT

1880 MHz 1980 MHz

MSS

MSSIMT 2000PHS

PCS1900A C B BC C CEF A FE

2010 MHz

MSSIMT 2000

MSSIMT-2000

MSSreserved

MSSIMT 2000

2160 MHz

2110 MHz

1895 MHz

1918 MHz2170 MHz

2170 MHz

1990 MHz1910 1930

WARC92

Europe

Japan

S. Korea WARC-92

Canada(C,E free)

USA

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GSM & UMTS Frequency Ranges (R6)

1720 1760

1740 1780

1800 1840 1880

1820 1860

2120 2160

2100 2140

2040 2080

2020 20601900

1920 1960 2000

1940 1980

UMTS FDD(IMT-2000)UMTS TDD

UMTS TDD

UMTS 1900GSM 1900UMTS TDD

UMTS 1800GSM 1800

920 960

900 940

840 880

820 860

760 800

740 780

GSM 900Extended GSM 900

R- GSM 900

GSM / UMTS 850GSM 700GSM/EDGE:TS 45.005

UMTS: FDD/TDDTS 25.101 & 25.201

UMTS1700

not shown: GSM400

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GSM/EDGE & UMTS (Rel. 6) FrequencyRanges:TS 25.101 (FDD: UE Radio Rx & TX):FDD bandsBand I: 1920 1980 / 2110 2170 MHzBand II: 1850 1910 / 1930 1990 MHzBand III: 1710 1785 / 1805 1880 MHzBand IV: 1710 1755 / 2110 2155 MHzBand V: 824 849 / 869 894 MHzBand VI: 830 840 / 875 885 MHz

(Japan only)

TS 25.102 (TDD: UE Radio Rx & TX):TDD bands

1900 1920 MHz2010 2025 MHz1850 1910 MHz (ITU Region 2)1930 1990 MHz1910 1930 MHz (ITU Region 2)

TS 45.005 (GSM/EDGE RAN: Radio Rx & Tx)GSM/EDGE bands:T-GSM380: 380.2 389.8 / 390.2 399.8 MHzT-GSM410: 410.2 419.8 / 420.2 429.8 MHzT-GSM450: 450.4 457.6 / 460.4 467.6 MHzT-GSM480: 478.8 486 / 488.8 496 MHzGSM750: 747 762 / 777 792 MHzGSM850: 824 849 / 869 894 MHzGSM900P: 890 - 815 / 935 960 MHzGSM900E: 880 915 / 925 960 MHzGSM-R: 876 880 / 821 925 MHzT-GSM900: 870.4 876 / 915.4 921 MHzGSM1800: 1710 1785 / 1805 1880 MHzGSM1900: 1850 1910 / 1930 1990 MHz

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WRC-2000: 3G Frequency Ranges

large-area coverage additional 3G

frequency ranges world-wide Harmonisation

of 3G frequency ranges

Frequency range [MHz]806 960

only some countries

cellular

1710 1885

cellular

2500 2690

cellular MSS cellular MSS

1885

2010

2110

1980

2025

2170

2200

WARC92

698

cellular Harmonisation / Extension:Refarming 2G frequencies( rural service areas)

Harmonisation /Extension:

ExtensionBand

(Indoor/Pico Cells)

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Duplex Transmission: FDD & TDD

Duplex TransmissionDuplex Transmission

Tim

et

UL

DL

UL

DL

UL

Framewithn TS

TDD

ULUplink

DLDownlink

DL

frequency f

Tim

et

duplex distance

UL

FDD

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Multiple Access: FDMA, TDMA & CDMA

Multiple Access MAMultiple Access MA

frequency f

time tPower

P

1 2 3

FDMA

frequency f

time t

PowerP

TS 1TS 2TS 3

TDMA

frequency f

time t

PowerP

Code 1Code 2Code 3

CDMA

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(De-) Spreading Process

usingCode 2

Pow

erDen

sity

P

frequency f

UnspreadSignals

SpreadSignals

Radio Transmission = spread signals

afterDe-Spreading

user 1

user 2

user 1 & 2

frequency f

CDMA: Spread Spectrum Technology SST every user with unique Code Spreading / De-Spreadingusing high-chip rate Code

Spreading

Spreading

De-Spreading

usingCode 2

usingCode 1

usingCode 1

De-Spreading

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(De-) Spreading Process

Chip

SpreadingCode

+1

-1

UserData

Bit rateRB

Spreading AirInterface

HF-Modu-lation

De-Modu-lation

De-Spreading

UserData

Bit rateRB

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Spreading / De-Spreading

spreadData

via Air Interface

1 0 1 0User Data

Data(convertedto +1/-1)

SpreadingCode

+1

+1

+1

-1

-1

-1

+1

+1

-1

-1

SpreadingCode

Data

1 0 1 0User Data

1 Bit (symbol)*

UMTS Modulation:

QPSK

2 bit/symbol

UMTS Modulation:

QPSK

2 bit/symbol

SF = Rchip / Rdata

*in UMTS: QPSK(2 data streams

spread in parallel operation)

SF: Spreading Factor


Rchip: Chip Rate [cps]

Rdata: Data Rate [symbol/s](information rate on theair interface)


Rchip: Chip Rate [cps]

Rdata: Data Rate [symbol/s](information rate on theair interface)

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Modulation

BPSK, QPSK & 8PSK:Amplitude is the same

for every symbol

PSK:Phase

denominatessymbol

-1 1

(Q)

I

BPSK:

-1 1

-1

1

10

11

0 0

01

Q

I

QPSK:

8PSK :Q

I

000

001

101

100

110

111

011

010

Bit/symbol e.g.:

GMSK: 1 (GSM) BPSK: 1 (IS-95) QPSK: 2 (UMTS) 8PSK: 3 (EDGE) 16QAM: 4 (HSDPA) 64QAM: 6 (WLAN)

Bit/symbol e.g.:

GMSK: 1 (GSM) BPSK: 1 (IS-95) QPSK: 2 (UMTS) 8PSK: 3 (EDGE) 16QAM: 4 (HSDPA) 64QAM: 6 (WLAN)

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UMTS QPSK Modulation

UMTS QPSK:The user data stream is converted from serial to parallel operation;

the 2 parallel data streams are spread & modulated parallel

UMTS QPSK:The user data stream is converted from serial to parallel operation;

the 2 parallel data streams are spread & modulated parallel

1 2700 90

1 1800 0

90Phase Shift

Oscillator: fc

Rc

Rc

cos(2fct)

sin(2fct)

0045

10315

11225

01135

IBranch

QBranch

Symbol& Phase Shift

Symbol& Phase Shift

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Spreading Factor & Processing Gain

Spreading Factor definition:

Spreading Factor SF(UMTS FDD) =

(512), 256, 128, 64, 32, 16, 8, 4

Spreading Factor SF(UMTS FDD) =

(512), 256, 128, 64, 32, 16, 8, 4UMTS FDD:TS 25.211

TS 25.213:

The modulatingchip rate

is3.84 Mcps*.

TS 25.213:

The modulatingchip rate

is3.84 Mcps*.

* FDD & HCR TDD: 3.84Mcps; LCR TDD: 1.28Mcps (TS 25.201)

Service bit rateChip rateProcessing

Gain= [dB]

Data (Symbol) rateChip rateSpreading

Factor SF= [dec]

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Spreading Factor SFThe Spreading Factor SF determines how manychips are used to spread 1 symbol.The smaller the Spreading Factor the higher thesymbol rate, respectively the corresponding userdata bit rate.The higher SF, i.e. the more chips are used forspreading the more robust is the transmission.The more robust the transmission, the lesstransmission power is needed.The SF of the FDD mode (Rel. 99 R. 5) can be512 4.SF of TDD can be varied between 16 1.

Chip RateTS 25.213 defines the chip rate of the UMTS FDDmode to be 3.84 Mchip/s.In general, in UMTS (Rel. 4) 2 chip rates / bandwidthare existing (TS 25.201): FDD mode & High ChipRate HCR TDD mode are using 3.84 Mchip/s at 5MHz bandwidth, the Low Chip Rate LCR TDD modeuses 1.28 Mchip/s at 1.6 MHz bandwidth.

Processing GainThe ratio between the transmitted modulationbandwidth (Chip-Rate) and the information signalbandwidth (Service Bit Rate) is called theProcessing Gain. The Processing Gain is given indB and will be used for UMTS Radio Link Budgetcalculation.

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UTRA Key Parameters

FDD & TDD harmonised in: Bandwidth: 5 MHz Chip Rate: 3.84 Mcps Modulation: QPSK Frequency Re-Use = 1 Timing: 1 Frame = 10 ms = 15 Slots 1 Slot = 2/3 ms = 2560 chip 1 chip = 260.4 ns Code Type: OVSF Codes

FDD pure WCDMA(continuous transmission)

SF = 4 256 (512) Rdata = 15 960 ksymb/s fUL = 1920 1980 MHz fDL = 2110 2170 MHz

TDD WCDMA & TDMA(Bursts: 15 Slots / Frame)

SF = 1 16 Rdata = 16 256 ksymb/s / Slot f = 1900 1920 MHz &

2010 2025 MHz

FDDMode

14

10

TDDMode

1 TS 1 TS 1 TS 1 TS 1 TS 1 TS 1 TS 1 TS 1 TS 1 TS 1 TS 1 TS 1 TS 1 TS 1 TS

1 Frame = 15 Slots = 10 ms = 38400 chip

10 ms 10 ms 10 ms 10 ms Time

FDD & TDDdifferent in

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Codes

Spreading Code = Channelization Code x Scrambling CodeSpreading Code = Channelization Code x Scrambling Code

UL

1 UE 1 or severalScrambling

Codes

frequency f

time t

PowerP

1234

Different DataChannels, Control

Information - differentChannelization Codes

Emitted Signal

DL

1 cell -1 or severalScrambling

Codes

frequency f

time t

PowerP

1234

Several users, controlinformation - differentChannelization Codes

Emitted Signal

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Codes: DL Spreading & Scrambling

Channel 1Bit Rate

Bit Rate

ChannelizationCode CCCH,SF,m

ChannelizationCode CCH,SF,m

Channel n

Chip Rate

Chip Rate

Chip Rate

ScramblingCode

Chip Rate

To Modulation

Spreading in bandwidth

Distinction of channels

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Channelisation Code Tree

Spreading Factors in a subtree

Channelization Codes (CCn,m) = Orthogonal variable SF Codes OVSF (for UL & DL)

CC1,0 = (1)

CC2,1 = (1,-1)

CC2,0 = (1,1)

CC4,0 = (1,1,1,1)

CC4,1 = (1,1,-1,-1)

CC4,2 = (1,-1,1,-1)

CC4,3 = (1,-1,-1,1)

CC256,0CC256,1CC256,2

CC256,255CC256,254

SF = 1 SF = 2 SF = 4 SF = 256

CC1 = (1) CC2 =1 11 -1

CCn =CCn/2 CCn/2CCn/2 -CCn/2

CCn,m generation:

(SF = 512)

WalshMatrix

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Scrambling Codes

UL

Short CodesCode period = 2/30 ms

256 chipsS(2) code family

224 available codesComplex valued

Scrambling Sequencegenerated bycombining

2 real sequences

Long CodesCode period = 10 ms

38400 chipsGold Codes

224 available codes =16,777,215 UL SCs;

Complex valuedScrambling Sequencegenerated from two

single real sequences

optionalmakes implementationof advanced receiverstructures easier

DL

Long CodesCode period = 10 ms, 38400 chipsGold Codes, 512 SC-Code Sets

with 1 Primary & 15 Secondary SC-Codes(totally: 8192 DL Scrambling Codes)

Complex valued Scrambling Sequencegenerated from two single real sequences

CodeSet1

CodeSet2

CodeSet512

PrimaryScrambling codeSecondary Scramblingcode 1

Secondary Scramblingcode 2


PrimaryScrambling code




SC: Scrambling Code

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Orthogonality

subtree

Channelization Codeshave orthogonal properties.

Code 2

Code 1

Code 4

Code 3 Code 3 x Code 4 = 0Code 3 x Code 3 = 1ButCode 1 x Code 2 = 1!!!

Scrambling Codesare quasi orthogonal

Code 1 x Code 2 ~ 0 (noise)Code 1 x Code 1 ~ 1Here Code 1 and 2 are justdifferent Codes

Orthogonality:

2 codes are orthogonal if XORing results in equal number of 1s and 0s.

Using instead of 1 and 0 1 and -1 multiplication has to result in 0.

Orthogonal codes are not cross-correlated: cross correlation = 0.

Example: 1100 11-1-1

1010 or 1-11-1

1001 1-1-11 cross correlation = 0

Orthogonality can be lost due to multipath propagation !

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Auto- & Cross-correlation

Good auto-correlation needed for

Synchronizing in presence of multipath

propagation (time dispersion),e.g. for initial

detection

Auto-correlation

Similarities between one code and

itself when shifted in time

Scrambling Codes:

Based on maximum length codes

low auto correlation

bad cross correlation

Good cross-correlation needed for

Separating physical channels,

i.e.synchronizing to one code in presence of

other codes, Separating channels

Cross-correlation:

Similarities between two codes

Mix of codes to obtain optimum performance

Channelization codes:

perfect orthogonality

maximum cross correlation

high auto-correlation

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Logical, Transport & Physical Channels

Transport Channel how & with what characteristicsdata are transmitted via Uu

Logical Channel content of the

transmitted information

Physical Channel physical description of

the air interface transmission

TS 25.301

25.211FDD

25.221TDD

Channels& more ??

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25.301: Logical channelsThe MAC layer provides data transfer services onlogical channels. A set of logical channel types isdefined for different kinds of data transfer servicesas offered by MAC. Each logical channel type isdefined by what type of information is transferred.A general classification of logical channels is intotwo groups:- Control Channels (for the transfer of controlplane information);- Traffic Channels (for the transfer of user planeinformation).Transport Channel: The physical layer offersinformation transfer services to MAC and higherlayers. The physical layer transport services aredescribed by how and with what characteristicsdata are transferred over the radio interface. Anadequate term for this is 'Transport Channel'.

A general classification of transport channels is into2 groups:- common transport channels (where there is a needfor inband identification of the UEs when particularUEs are addressed); and-dedicated transport channels (where the UEs areidentified by the physical channel, i.e. code &frequency for FDD).TS 25.211:Physical Channels:Physical channels are defined by a specific carrierfrequency, scrambling code, channelization code(optional), ...

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Channel Mapping

LogicalChannels

TransportChannels

PhysicalChannels

BCCH PCCH CTCH CCCH DCCH DTCH

BCH PCH FACH DCH DSCH

P-CCPCH S-CCPCH DPDCH DPCCH PDSCH

LogicalChannels

TransportChannels

PhysicalChannels

CCCH DCCH DTCH

RACH DCH CPCH

PRACH DPDCH DPCCH PCPCH

DL

UL

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Logical Channels

UL+DL

UL+DL

TRAFFICCHANNELS

CONTROLCHANNELS

DTCH(user data;PtP, PtMP)

CTCH(PtMP; for

user groups,e.g. SMS CellBroadcastService

DL DL UL + DL

BCCHBroadcastControlChannel(system

information)

PCHPagingControlChannel(paging &notification)

DCCHDedicatedControlChannel

(power control,pilot,..)

CCCHCommon Control

Channel(control

information forUE without RRC

connection)PtP: Point to PointPTMP: Point to MultiPoint

LOGICAL CHANNELS

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Transport Channels

Transport Format:Transport Format:

Semi-static part

CRC size (for error detection) = 0, 8, 12, 16, 24 bits Channel coding characteristics (redundancy),

e.g. Convolutional Coding = 1/2, 1/3 or Turbo Coding 1/3 TTI = 10, 20, 40, 80 ms Rate matching Attributes

Dynamic part Transport block TB size

= 1..5,000 bit

Transport block set size= 1..200,000 bit

Transport Channels are defined by a set of characteristics:the Transport Format

TB#1

TB Set

TB#2 TB#3 TB#4

RLC/MAC

L1

CRC: Cyclic Redundancy CheckTTI: Transmission Time Interval

1 TB =1 MAC PDU

TTI

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Transport ChannelsBroadcast Channel BCH: transmit cell & networkspecific informationPaging Channel PCH: transmit data relevant tothe paging procedure (network wants to initiatecommunication with the UE)Forward Access Channel FACH: transmitcontrol information or small amount of packet dataon common resources in the DLRandom Access Channel RACH: transmitcontrol information or small amount of packet dataon common resources in the ULCommon Packet Channel CPCH: RACHextension for PS data transmission on commonresourcesDL Shared Channel DSCH: UL transmission ofcontrol data or dedicated user data on sharedresources; users are time-multiplexed

Dedicated Channel DCH: used for the transport ofdedicated user data and control information for aparticular UE

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FDD Physical Channels

UL

PRACH

DPCCH

PCPCH

DPDCH

Random Access

DL CPICH

SCH

P-CCPCH

S-CCPCH

PICH

AICH

PDSCH

DPCH

Packet Data

Control info

DataData + control info

Pilot

Synchronization

System info

System info

Access grant, notif.

Shared channel

Paging

Physical Channel :Frequency band, Time, Code

(TDD: TS)

CD/CA-ICHCollision avoiding

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FDD Physical Channels (selection)Dedicated Physical Data Channel DPDCH:transmission of dedicated user data & higher layersignalling (RRC, NAS) in UL directionDPCCH: transmission of radio control informationin UL direction)DPCH: transmission of user data & control data(time-multiplexed) n DL direction.Synchronisation Channel SCH: Cell search andsynchronisation of the UE to the Node B signal.Subdivided in Primary & Secondary SCHPrimary Common Control Physical Channel P-CCPCH: transmits the Broadcast information inthe DLSecondary Common Control Physical ChannelS-CCPCH: transmission of Paging information(PCH), Common Traffic Channel data and NRT,best effort user data (FACH) in the DL. FACHs

and PCH can be mapped on 1 S-CCPCH or onseveral (up to 16) S-CCPCHsCommon Pilot Channel CPICH: transmits DL cellScrambling Code; used for channel estimation andallows estimates for Power Control; each cell has 1Primary CPICH and up to 15 Secondary CPICHsPhysical Random Access Channel PRACH:transmission of RACH for Random Access or smallamount of packet data in the ULPhysical Common Packet Channel PCPCH:PRACH extension with additional collision detectionmechanismPaging Indication Channel PICH: transmission ofPage Indicators for UE Discontinuous ReceptionDRX operation;Acquisition Indication Channel AICH: positive ornegative acknowledgement for random access of aUE via PRACH or PCPCHPhysical DL Shared Channel PDSCH:transmission of packet data on shared resources

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Physical Channels

Primary CPICH: 1 per cell = Cell beacon broadcasted over entire cell

Secondary CPICH: up to 15 per cell option to define sub-cells

6

FrameSynchronisation ScramblingCode Group

FrameSynchronisation ScramblingCode Group

TS & Chip

Synchronisation

TS & Chip

SynchronisationPrimarySCH

PrimarySCH

SecondarySCH

SecondarySCH

cp

Csi,0

cp

Csi,1

cp

Csi,14

1 frame = 10 ms

2560 chip256 chip

TS #0 TS #1 TS #14

cp : Primary Synchronisation Code; unique in every cellCsi,0..14: Secondary Synchronisation Codes; i = 1..64

CPICHCommon Pilot Channel

Pre-defined symbol sequence= Cell Scrambling Code

phase reference

SF = 256 CC256,0

CPICHCommon Pilot Channel

Pre-defined symbol sequence= Cell Scrambling Code

phase reference

SF = 256 CC256,0

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Physical Channels

FACH & PCH on sameor separate S-CCPCHs

up to 16 S-CCPCHs per cell CC - allocation indicatedby P-CCPCH

only transmitted whendata available

for Broadcast information(BCCH carrier)

CC256,1

TS = 2560 chip (DL= 20 bit; SF = 256)

Tx OFF P-CCPCH Data (18 bit): BCH

256 chip

TFCIoptional S-CCPCH Data: FACH / PCH Pilot

TS = 2560 chip (DL= 20 - 1280 bit; SF = 256 - 4)

P-CCPCHPrimary Common Control Physical Channel

P-CCPCHPrimary Common Control Physical Channel

S-CCPCHSecondary Common Control Physical Channel

S-CCPCHSecondary Common Control Physical Channel

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Physical Channels

15 MP start positionsin 2 frames (every 2 TS)

SF = 256(UL: 15 kbps)

SF = 256 - 32(UL: 15 - 120 kbps)

Preamble Message Part MPPreamble

4096 chip PRACH: 1/2 frame = 10/20 ms

Data

Pilot TFCI

TS = 2560 chip

256 repetitions of16 different signatures S

AS #0 AS #1 AS #14

2 frames = 20 ms

5120 chip

for Acquisition Indication AI:response on PRACH Preamble (S)

DL: 40 bit: 16 AIS valuesAS: Access Slot

PRACHPhysicalRandomAccessChannel

PRACHPhysicalRandomAccessChannel

AICHAcquisition Indication Channel

AICHAcquisition Indication Channel

PCPCHPhysical Common Packet Channel PRACH extension SF = 256 4 duration: n x 10 ms extra collision protection

PCPCHPhysical Common Packet Channel PRACH extension SF = 256 4 duration: n x 10 ms extra collision protection

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Physical Channels

Data block 1 TPC TFCIoptional

TPC: TransmitPower Control

TFCI: Transport FormatCombination Indicator

FBI: FeedBack Information

Data block 2 Pilot

Slot #0 Slot #i Slot #14

TS = 2560 chip (DL= 10 - 1280 bit; SF = 512 - 4)

Data

Pilot TFCIoptionalFBI

optional TPC

DPCHDedicatedPhysical Channel SF = 512 - 4 15 - 1920 kbps

DPCHDedicatedPhysical Channel SF = 512 - 4 15 - 1920 kbps

DPDCHDedicated PhysicalData Channel SF = 256 4 15 - 960 kbps

DPDCHDedicated PhysicalData Channel SF = 256 4 15 - 960 kbps

TS = 2560 chip (UL= 10 - 640 bit; SF = 256 - 4)

TS 25.211 & 213

DPCCHDedicated PhysicalControl Channel SF = 256; CC256,0 15 kbps

DPCCHDedicated PhysicalControl Channel SF = 256; CC256,0 15 kbps

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Example: IMSI Attach

UL & DL: DPDCH & DPCCHor PRACH / S-CCPCH

PRACH Preamble (S)

PRACH Preamble (S)

AICH (AIS )

no answer repetition

PRACH Message Part

S-CCPCH

CPICH

S-SCH

P-SCH

P-CCPCH

02 6220 UMTS RNP Fundamentals E08

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