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Module 1Module 1

3JK11636AAAAWBZZA Issue 1

Section 1HSDPA Algorithms Description

9300 W-CDMAUA06 HSxPA Algorithms Description

TMO18045 DO DEN Issue 1

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9300 W-CDMA UA06 HSxPA Algorithms DescriptionHSDPA Algorithms Description Module 1

1 1 2

Blank Page

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1 1 3

Module Objectives

Upon completion of this module, you should be able to:

Describe HSDPA activation principles and associated parameters

Describe HSDPA radio resource management parameters Describe HSDPA mobility features and associated parameters

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1 1 4

Module Objectives [cont.]

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1 1 5

Table of Contents

Switch to notes view!

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1 1 6

Table of Contents [cont.]

Switch to notes view!

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1 1 7

1 HSDPA Activation

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1 1 8

1 HSDPA Activation

1.1 HSDPA Distributed Architecture

Uu Iub

MAC-d

RLC

HS-DSCHFP

MAC-hsHS-DSCH

FP

RLC

L2 L2

Flow control

PHY PHY L1 L1

New Transport channelHS-DSCH

RNCNodeBUE

HS-SCCHDownlink Transfer Information(UEid, OVSF,...)

HS-PDSCHData Transfer (PS I/B)

HS-DPCCHFeedback Information

(CQI, ACK/NACK)

DPCHUpper Layer Signaling

RNC

New Frame ProtocolsHS-DSCH

Introduction ofMAC-hs

Iub

MAC-d

MAC-hs

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1 1 9

1 HSDPA Activation

1.2 HSDPA Activation Flags

BTSEquipment

BTSCell

edchResourceActivation

FddCell

NodeB RadioAccessService

isHsdpaAllowededchActivation

RNC

isHsdpaAllowed

UmtsNeighbouring

RemoteFDDCell

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1 1 10

1 HSDPA Activation

1.3 HSDPA Capable-UE Supported

1.8 MbpsQPSK only15Category 12


14.4 MbpsQPSK & 16-QAM115Category 10










Max Peak RateModulationInter-TTI Min IntervalHS-PDSCH Max NumberHS-DSCH Category













Max Peak RateModulationInter-TTI Min IntervalHS-PDSCH Max NumberHS-DSCH Category

QPSK mandatory for HSDPA capable UE

16-QAM optional

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1 HSDPA Activation

1.4 H-BBU Resource Allocation

BTS

iCCM iTRM

iTRM

iTRM

MCPA DDM

Radio Shelf

MCPA DDM

MCPA DDM

Digital Shelf

iCEM128H-BBU

H-BBU

iCEM128

iCEM64

iCEM128

H-BBU

D-BBU

D-BBU

CEMaD-BBU

D-BBU

H-BBU

D-BBU

HsdpaConf

BTSEquipment

BTSCell

HsdpaResourceId

ULHS-DPCCHDLHS-DPDCH(s)HS-SCCH(s)

MAC-hs HARQScheduler Link Adaptation (AMC)

iCEM case

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1 1 12


1.4.1 M-BBU Resource Allocation xCEM case

BBU

DCH

BBUDCH

BBU

DCH

BBUDCH

BBUHSDPA

BBUHSDPA

BBUHSDPA

BBUHSDPA

xCEMBBUHSDPA

BBUHSDPA

BBUHSUPA

BBUHSUPA

BBUDCH

BBUDCH

BBUDCH

BBUDCH

xCEM

BBUMultimode

BBUMultimode

BBUMultimode

BBUMultimode

BBUMultimode

BBUMultimodeBBUMultimode

BBUMultimode

xCEM

DPCCH, DPDCH(DCH + SRB + CCH)

all HSDPA channels all HSUPA channels

-Up to 256 CE where 128 of themcan be used to support HSDPAand/or HSUPA calls

-Up to 6 cells belonging to 2 LCGs

UA5

UA6

HsdpaConf

BTSEquipment

BTSCell

HsdpaResourceId

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1 1 13


1.4.2 Parameters involved in CEM configuration

BTSCell

R99Resource LocalCellGroup

BTSEquipment

RfCarrier

minimumR99ResourceRequired

hspaHardwareAllocation

HsdpaConf

EdchConf

hsdpaResourceId

EdchResourceId

HSPA allocation in iCEM or xCEM

Common iCEM/xCEM parameters

xCEM specific parameters

iCEM specific parameters

localCellGroupId

hsxpaResourceId

hsdpaResourceActivation

edchResourceActivation

LocalCellGroupId

r99ResourceId

priority

rfCarrierId

HsXpaResource

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1 1 14

1 HSDPA Activation

1.5 HSDPA/E-DCH Service Indicator broadcast

HSDPAOK!

HSDPANOK!

HSDPA cellnon HSDPA

cell

RNC

SIB5SIB5

NodeB

HSDPA UE

NodeB

HSDPA UE

isHsxpaServiceIndicatorEnabled

(RadioAccessService)

hsdpaServiceIndicatorMethodedchServiceIndicatorMethod

(FDDCell)

Auto Auto

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1 1 15

1 HSDPA Activation

1.6 Transport Channel

HSDPA Downlink transport channel: HSHS--DSCHDSCH

HS-DSCH

DTCH

DL

Traffic

TRBMobile i

HS-PDSCH

HS-DPCCH

HS-SCCH

Downlink

TTI: 2ms

TBS free attribute of Transport format AMC = f(CQI)

HARQ Turbo coding 1/3

CRC 24bits

BTSCell

HsdpaConf

harqType

harqTypeXcem

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1 1 16

1 HSDPA Activation

1.7 Physical Channels

DTCH

DL

Traffic

TRB

RadioAccessService

numberOfHsPdschCodes

numberOfHsScchCodes

HsdpaCellClass

HS-PDSCH

HS-DPCCH

HS-SCCH

HS-DSCH

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1 1 17

1 HSDPA Activation

1.8 DL OVSF Code Tree

SF256

SF128

SF64

SF32

SF16

SF8

SF4

0

10

02

31

4

52

16

73

8

94

210

115

12

136

314

157

0

2

3

1

S-CCPCH/0

S-CCPCH/2

4

5

6

7

HS-SCCH

Common channels (including S-CCPCH/1)

HS-PDSCH

STATIC

Allocation

Free OVSF codes

STATIC or DYNAMICAllocation

DYNAMIC

Allocation

numberOfHsScchCodes


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1 HSDPA Activation

1.9 HSDPA Key Features

SchedulerFills the TTIs with one or more users based on their priority and

feedback information

HARQ ProcessesRetransmissions handling, TFRC selection, AMC

Queue IDs

Radio TransmissionFeedback Reception

Capacity RequestControl FP

Capacity AllocationControl FP Data FP

Flow Control

Dynamically fills the Queues of each UE

RNC

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1 1 19

1 HSDPA Activation

1.10 AMC Principles

QPSK

QPSK

QPSK

16QAM

16QAM

-20 -15 -10 -5 0 50

100

200

300

400

500

600

700

800

Ior/Ioc (dB)

Throug

hput(kbps)

AMC IllustrationUE Category Reported CQI

Coding

Rate

Modulation

Scheme

Number of

OVSF Codes

AMC

AMC

2ms

Maximum Throughput

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1 1 20

1 HSDPA Activation

1.11 UE Capabilities and Max Bit Rates

-10 -8 -6 -4 -2 0 2 4 6 8 1010

15

20

25

C/I (dB)

softCQI

Soft CQI vs C/I - Pedestrian_a 1 RX

Category 6 UE CQI Mapping Table

16-QAM3024 kbps530

16-QAM3024 kbps529

............

16-QAM1440 kbps516

QPSK1296 kbps515

QPSK1008 kbps414

QPSK864 kbps413

QPSK720 kbps312

QPSK576 kbps311

QPSK432 kbps310

QPSK288 kbps29

QPSK288 kbps28

QPSK144 kbps27

QPSK144 kbps16

QPSK144 kbps15

QPSK0 kbps14

QPSK0 kbps13

QPSK0 kbps12

QPSK0 kbps11

out of range0

ModulationRLC ThroughputHS-PDSCH NumberCQI Value

Target BLER 10%

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1 1 21

1 HSDPA Activation

1.12 HARQ Types

Chase CombiningChase Combining

NACK NACK NACK NACK ACK

DATA DATA DATA DATA DATA

NACK NACK NACK NACK ACK

DATA DATA1 DATA2 DATA3 DATA4

Incremental Redundancy CombiningIncremental Redundancy Combining

BTSCell

BTSEquipment

HsdpaConf

harqType{mirType, pirType, ccType, drType, WithPowerAdaptation}

harqTypeXcem{ccType, irType}

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1 HSDPA Activation

1.13 Modulation Schemes

I

Q

0000

00011001

10001010

1011

1110

1111

01001100

1101

0010

0110

0111

0011

0101

11

10

01

00

Q

I

4 bits per symbol960kbps per OVSF1920 bits per TTI

2 bits per symbol480kbps per OVSF960 bits per TTI

16QAM16QAM

QPSKQPSK

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1 HSDPA Activation

1.14 Constellation Rearrangement (16QAM)

b=2

I

Q

0000

00011001

10001010

1011

1110

1111

01001100

1101

0010

0110

0111

0011

0101

I

Q

0011

00101010

10111001

1000

1101

1100

01111111

1110

0001

0101

0100

0000

0110

I

Q

0000

01000110

00101010

1110

1011

1111

00010011

0111

1000

1001

1101

1100

0101

I

Q

1100

10001010

11100110

0010

0111

0011

11011111

1011

0100

0101

0001

0000

1001

b=0

b=3

b=1

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1 HSDPA Activation

1.15 Redundancy Version Parameters

0117

3016

2015

1014

1103

1112

0001

0010

brs16QAM XRV

307

316

205

214

103

112

001

010

rsQPSK XRV

RV CodingRV Coding MIR RV Update TableMIR RV Update Table

7430512616QAM XRV

74316520QPSK XRV

76543210k

TRV[k]

XRV=TRV[0]k=0

YES

NO

New Tx?

DTX? XRV=XRV

k=k+1XRV= TRV[k mod Kmax]

NO

YES

RV UpdateRV Update

Kmax

PIR RV Update TablePIR RV Update Table

74052616QAM XRV

6420QPSK XRV

543210k

TRV[k]

Kmax

CC RVCC RV

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1 HSDPA Activation

1.16 HARQ Stop and Wait Principles

Update RV Parameters

Transmit Data

Insert DTXIndication

Nret = Nret + 1

Reset & Free

HARQ Process

Wait for Transmission

Wait for ACK/NACK Reception

ACK/NACK/DTX?

Nret > Nret_max

HARQHARQ

UE is Scheduled

ACK

YES

NACK

DTX

NO

TB1 HARQHARQ

TB2 HARQHARQ

HSDSCH

ACK/NACK

HS-DPCCH

harqNbMaxRetransmissionsharqNbMaxRetransmissionsXcem

(HsdpaConf)

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1 HSDPA Activation

1.17 HARQ Mechanisms

Data 6 Ack/nack

Data 2

Data 7

Data 8

Data 6

Data 9

Data 11Data 10

Data 12

Data 13

Data 1

To next step

(demultiplexing

)

Data 2

Data 1

Data 2

Data 2

Transmissions

Ack

Nack

Ack

Ack

Nack

RV0 RV1 RV2Process 0

Process 1

Process 2

Process 3

Data 2

combining

Data 5

Data 5

Data 3

Data 4

Ack

Ack

Data 3

Data 4

Data 9

Data 11

Data 10

Data 12

Data 13

Data 9

Data 11

Data 10

Data 12

Data 13

Ack

Ack

AckAck

Ack

combining

Data 6

Data 6Ack

Data 1

Data 2

Data 2Data 6

Nack

Data 5

Data 3

Data 4

Data 8

Data 7

Data 7

Data 8

Ack

Ack

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1 HSDPA Activation

1.18 Optimal Redundancy Version for HARQ retransmission

CC

FIR

PIR

DynamicDynamicRV TableRV Table

SelectionSelection

First RTx?

YES

maximum number of bits per HARQ

number of RM2 punctured bits

number of systematic bits

total number of radio bits

CC+CoRe

74052616QAM XRV

6420QPSK XRV

543210k

31616QAM XRV

73150QPSK XRV

43210k

405616QAM XRV

3210k

0QPSK XRV

0k

harqType(hsdpaConf)

if = drType or DRWithPowerAdaptation

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1 HSDPA Activation

1.19 Channel Coding : Recall

InputData

TurboCoding

First RateMatching

Second RateMatching

VirtualIR Buffer

Spreading &Modulation

Systematic

bits

Parity 1bits

Parity 2bits

1/3

NSYS

NP2

NP1

RM S

RM P1_2

RM P2_2

RM P1_1

RM P2_1

NRM1 NDATA

NPUNC2

NIR

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1.20 Selection of the Redundancy Version per HARQ process

NACK received

1st retrans

NDATA>= 3xNSYS

NDATA>= NIR

NDATA-NSYS -NPUNC2 < 0

Use RV tables of HARQ type

chosen at 1st

retransmissionYes

No

CC / CC+CoReYes

Yes

No

No

PIRFIRNoYes

1 HSDPA A ti ti

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1 HSDPA Activation

1.21 Multi-RAB handling on HSDPA

Interactive callBackground callStreaming call

Conversational call Speech, Video telephony

SRNC

Core Network

HS-DSCH

DCH

isMultiRabOnHsdpaAllowed (RadioAccessService)

enabledForRabMatching (multi-RAB DlUserService)enabledForRabMatching (multi-RAB UlUserService)

1 HSDPA Activation

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1 HSDPA Activation

1.22 Multi-RAB and GBR handling on HSDPA

Streaming, Interactive, Background

Core Network RNC

RNC

NodeB

NodeB

UEN

QI0 QI1 QI2

CIDm

PDU

flow0

CIDn

PDU

flow1

cmCH-PI6

cmCH-P

I6

cmCH-P

I4

SP6 SP6SP4

UE0

QI0

C

IDl

PDU

flow0

cmCH-P

I4

SP4

GBR QIx priority>

Non GBR QIy priority

If not All GBR flows satisfied

Higher SPI and smaller GBR served first

HS-DSCH

isMultiRabOnHsdpaAllowed (RadioAccessService)

enabledForRabMatching (multi-RAB DlUserService)enabledForRabMatching (multi-RAB UlUserService)

isGbrOnHsdpaAllowed (RadioAccessService)

Speech, Video telephonyDCH

1 HSDPA Activation

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1 HSDPA Activation

1.23 User Services supported with HSDPA

HSxPA

Stand-alone

PS I/B HSDPA/DCH DL: f(HSD UE category) UL: 8,16,32,64,128,384

PS I/B HSDPA/HSUPA DL: f(HSD UE category) UL: f(HSU UE category, TTI)

PS Streaming HSDPA/DCH DL: (HSD UE category, GBR) UL: 16,32,64,128

Combination

CS Conv. Speech + PS I/B HSDPA/DCH DL: f(HSD UE category) UL: 8,16,32,64,128,384

CS Conv. VT + PS I/B HSDPA/DCH DL: f(HSD UE category) UL: 8,16,32,64,128,384

(CS Conv. Speech +) PS I/B MUX HSDPA/DCH DL: f(HSD UE category) UL: 64,128

CS Conv. Speech + PS Str. HSDPA/DCH DL: (HSD UE category, GBR) UL: 16,32,64,128

(CS Conv. Speech +) (PS I/B HSDPA/DCH+) PS Streaming (HSDPA or DCH/DCH) :

PS Streaming DL: 16,64,128,256,384 or f(HSD UE category, GBR) UL: 16,32,64,128

PS I/B HSDPA/DCH DL: f(HSD UE category) UL: 8,16,32,64,128,384

CS Conv. Speech + PS I/B HSD/HSU DL: f(HSD UE category) UL: f(HSU UE category, TTI)

CS Conv. VT + PS I/B HSDPA/HSUPA DL: f(HSD UE category) UL: f(HSU UE category, TTI)

(CS Conv. Speech +) (PS I/B HSDPA/HSUPA+) PS Streaming (HSDPA or DCH/DCH) :

PS Streaming DL: 16,64,128,256,384 or f(HSD UE category, GBR) UL: 16,32,64

PS I/B HSDPA/HSUPA DL: f(HSD UE category) UL: f(HSU UE category, TTI)

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2 HSDPA RRM

2 HSDPA RRM

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1 1 34

2 HSDPA RRM

2.1 RRC Traffic Segmentation

R4 cell R4 cell

RRC Connection Setup(Redirection to F1)

HSDPA cell

RRC Connection Setup(Redirection to F2)

RRC Connection Request(AS release indicator = R4 or absent)

RRC Connection Request(AS release indicator = R5/R6)

isRedirectionForTrafficSegmentation (InterFreqHhoFddCell)

isRedirectionBasedOnEstablishmentCause (InterFreqHhoFddCell)

RNC

HSDPA cell twinCellId (InterFreqHhoFddCell)

twinCellId

2 HSDPA RRM

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1 1 35

2.2 RAB Matching and CAC

HSDPA RAB

Service = PS?

Traffic ClassSTR, I/B?

R99 RAB

YES

YES

YES

RAB Request

NO

NO

NO

RNCRNC

HSDPA UE?

Primary Cell = HSDPA Cell?

YES

NO

HSDPA CAC

RadioAccessService

HsdpaCellClass

maximumNumberOfUsers

RNC

BTSEquipment

hsdpaMaxNumberUserHbbu

hsdpaMaxNumberUserXcem

=

2 HSDPA RRM

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1 1 36

2.3 HSDPA to DCH Fallback

HSDPA RBto established

CAC OK ?

DCH RBto established

HSDPA RBestablished

Yes

No

HSDPA to DCH Fallback

RAB assignment (to establish or to release)IU release

Primary cell changeIncoming Inter-RNC UE involved Hard Handover

Incoming Intra-RNC Alarm Hard Handover

Mobility

hsdpaToDchFallbackPermission


RabAssignment

AnyCase

NoFallBack

2 HSDPA RRM

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1 1 37

2.4 Fare Sharing

FS On HS-DSCH required power

GBR On GBR info sent to NodeB (GBR or minBR)

NodeB dynamic OVSF codes management:

Monitor the DL OVSF code tree occupancy

Determine the codes available for HS-PDSCH scheduling

Reconfigure the H-BBU accordingly via anew internal message

OVSF

Power

I/B MinBRTC/ARP/THP

HSDPA RNCCAC

STR GBR

Used

Used

isGbrOnHsdpaAllowed

HS-DSCH required power for minBR (PS I/B)

HS-DSCH required power for GBR (PS Str) + minBr (PS I/B)

True

False

Initial Radio Resources(power, codes)

isHsxpaR99ResourcesSharingOnCellAllowedDlPowerSelfTuningForPsIbOnHsdpaEnabled

(FDDCell)

hsdschReqPwFilterCoeff

hsdschReqPwReportingPeriod

(NBAPMeasurement)

2.4 Fare Sharing

2 4 1 C ll Ad i i C l & P R i

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2.4.1 Call Admission Control & Power Reservation

HSDPA RNCCAC (Power)

P traffic admission Pres

Pused

Traffic Power(SHO reserved)

TrafficPower

OverheadPower

(CCC+OCNS+ E-DCH)

xfair bitrate

x

R99 used+

HSDPA Required Power (GBR)+

HSDPA Reserved Power (non GBRwith minBR)

I/B MinBRTC/ARP/THP STR GBR

dlTxPowerEstimation*

initialActivityFactorForIb

RANAP GBR

Min(RANAP MBR,)minBrForHsdpa

Ps StrPs I/B

(*) is an power relative to P-CPICH power

2.4 Fare Sharing

2 4 2 C ll Ad i i C t l & C d R ti

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1 1 39

2.4.2 Call Admission Control & Codes Reservation

HSDPA RNC

CAC (Codes)

I/B MinBRTC/ARP/THP STR GBR

For UE category 11 and 12:

Nb of SF16 codes = fair bitrate /

For UE category 1 to 10:

Nb of SF16 codes = fair bitrate /

X reservationFactorOnCodesForGbrTraffic

ovsfCodesThroughputQpskUe1..15

ovsfCodesThroughput16QamUe

1..15

minBrForHsdpa0 orminHsDschReservationForCac

ifminBrForHsdpa =0

2.4 Fare Sharing

2 4 3 F i Sh i RAN M d l

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2.4.3 Fair Sharing - RAN Model

RadioAccessService

HsdpaRncConf

RNC

DedicatedConf NBAPMeasurmentMeasurmentConfClass

HsxpaR99ResourcesSharingCellClass

NodeB FDDCell

isHsxpaR99ResourcesSharingOnCellAllowed

isDlPowerSelfTuningForPsIbOnHsdpaEnabled

hsxpaR99ResourcesSharingId

TrafficClassBasedQos ArpBasedQos ThpBasedQosl

Parameter for GBR on HSDPA in UA6.0

Parameter for Fair Sharing in UA6.0

hsdschReqPwFilterCoeff

hsdpaReqPwReportingPeriod

minBrForHsdpa

minHsDschReservationForCac

dlTxPowerEstimation

ovsfCodesThroughputQpskUe

ovsfCodesThroughput16QamUe

reservationFactorOnCodesForGbrTraffic

initialActivityFactorForIb

isGbrOnHsdpaAllowed

isMultiServiceWithDchStrAndHsDschIbAllowed

hsdpaTransportEbrCorrectiveFactor

transportTypeSelectionTransferDelayThreshold

2 HSDPA RRM

2 5 QoS Mapping

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2.5 QoS Mapping

Virtual OfficeVirtual Office=> emails=> emails

Web BrowsingWeb Browsing

Video StreamingVideo Streaming

QoS differentiation is based on TC, ARP and THP parameters

Service differentiation Subscriber differentiation

PrivilegedPrivilegedusersusers

TC: Traffic ClassARP: Allocation/Retention PriorityTHP: Traffic Handling Priority

OLS: Olympic Level Service (gold, silver,bronze)MLP: MAC Logical Channel PrioritySPI: Scheduling Priority Indicator

3GPP

Mappingtable

UTRAN & Core A-Ls RNC

2 HSDPA RRM

2 6 Scheduling Priority Indicator (SPI)

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2.6 Scheduling Priority Indicator (SPI)

From RABassignment Request

Used as inputs to RRM algorithms toprovide user QoS differentiation

Bronze

Silver

Gold

BronzeBronze

Bronze

Silver

Silver

Silver

Gold

Gold

Gold

Bronze

Silver

Gold

OLS

15N/AN/A1Streaming

14N/AN/A2Streaming

13N/AN/A3Streaming

11N/A3Background

21N/A2Background

31N/A1Background

4233Interactive5223Interactive

6213Interactive

7332Interactive

8422Interactive

9512Interactive

10631Interactive

11721Interactive

12811Interactive

SPIMLPTHPARPTraffic

class

OLS: Used as input to iRM Tables & AO Subscriber Differentiation

MLP: Used to prioritize the different PS I/B RABs assigned

to the same user (at the MAC layer).

Service Differentiation

SPI: Derived SPI is provided by the RNC to the BTS per

MAC-d for MAC-hs prioritisation in the HSDPA scheduler

Subscriber Differentiation

FromRAB assignment Request

iuPriorityLevel

iuThpmlpolsspi

RadioAccessService

TrafficClassBasedQos

ThpBasedQos

3ArpBasedQos

0..3

3

2 HSDPA RRM

2 7 UE QId and SPI

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2.7 UE, QId and SPI

RNC

RNC

NodeB

NodeB

UEN

QI0 QI1 QI2

PDUflow0

PDUflo

w1

CIDm

CIDn

cmCH-PI6

cmCH-PI6

cmCH-PI4

SP6 SP6SP4

UE0

QI0

PDUflo

w0

CIDl

cmCH-PI4

SP4

2 HSDPA RRM

2 8 NodeB Scheduler

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1 1 44

2.8 NodeB Scheduler

available codes

available power

UE capabilities

ACK/NACK/CQI

Compressed Mode information

UE HSDPA synchronisation state

HARQHARQ

Flow ControlFlow Control

QId0 QIdNQId1

NodeB Scheduler

Min COST value

COST = f(C1, C2)C1 = f(Scheduler Type)

C2 = f(SPI, CQI, UE Category)

QIdK

(UEX, SPIY)

2 HSDPA RRM

2 9 Dynamic Code Tree Management

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1 1 45

2.9 Dynamic Code Tree Management

spreadingFactorLevelForOvsfMonitoring

RadioAccessService

RNC

HsdpaCellClass

isHsPdschDynamicManagementAllowed

HsPdschDynamicManagement

SF2

56

SF1

28

SF

64

SF

32

SF

16

SF

8

SF

4

0

10

02

31

4

52

16

73

8

94

210

11

5

12

136

314

15

7

Pre-emption/Re-allocation is performed onconfiguration line (SF16 always for HS-PDSCH)

Monitoring is performed on monitoring line(SFx is operator choice between SF16 and SF256)

0

127


2 9 1 HS-PDSCH OVSF Codes Allocation

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1 1 46

2.9.1 HS PDSCH OVSF Codes Allocation


numberOfHsScchCodes

minNumberOfHsPdschCodes

maxNumberOfHsPdschCodes

RadioAccessService

RNC

HsdpaCellClass

SF4

SF8

SF16

SF32

SF64

SF128

SF256

cmCH

HS-PDSCH

HS-SCCH Cell SetupCell Setup

free

SF4

SF8

SF16

SF32

SF64

SF128

SF256

cmCH

HS-PDSCH

HS-SCCH Live CellLive Cell

freeR99


2.9.2 HS-PDSCH Codes Preemption / Reallocation

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1 1 47

2.9.2 HS PDSCH Codes Preemption / Reallocation

Free HS-PDCSH Codes

minNumberOfHsPdschCodes

time

maxNumberOfHsPdschCodes

Free R99 DCH Codes

threshCodesToTriggerStealing

HS-PDSCHpreemption HS-PDSCHpreemption HS-PDSCHreallocation

time

numCodesForDchAfterReallocation

numCodesForDchAfterStealing

threshCodesToTriggerReallocation

minTimeBeforeReallocationOfHsPdsch


2.9.3 DCTM RNC RAN Model

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1 1 48

2.9.3 DCTM RNC RAN Model

minNumberOfHsPdschCodes maxNumberOfHsPdschCodes

numCodesForDchAfterReallocation numCodesForDchAfterStealing

threshCodesToTriggerReallocation threshCodesToTriggerStealing

spreadingFactorLevelForOvsfMonitoring minTimeBeforeReallocationOfHsPdsch

RadioAccessService

RNC

HsdpaCellClass

isHsPdschDynamicManagementAllowed

HsPdschDynamicManagement

NodeB

FDDCell

isCellHsPdschDynamicManagementActive

hsdpaResourcehsdpaCellClassId


2.9.4 DCTM NodeB RAN Model

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1 1 49

2.9.4 DCTM NodeB RAN Model

BTSEquipment

BTS

BTSCell

HsdpaConf HsdschServiceParameterSet

hsdpaCodeTreeManagementActivation

Parameter for GBR on HSDPA in UA6.0

Parameter for Fair Sharing in UA6.0

xCEM

serviceFilterFactor

serviceHighRate

serviceLowRate

iCEM

hsdpaGbrNbNeededTtiForgettingFactor

hsdpaGbrNbUePerTtiForgettingFactor

hsdpaGbrTbSizeMonitoringForgettingFactorPerSpi

Used byMAC-hs scheduler

2 HSDPA RRM

2.10 HSDPA DL Power Reservation at RNC

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1 1 50

PmaxHspa

CCCRNC

SHO margin

OCNS (opt.)

PminHsdpa

PMaxCellRadioAccessService

HsdpaCellClass

minimumPowerForHsdpa

PminHsdpa =PMaxCell - minimumPowerForHsdpa

RNCRNC

when Fair Sharing is enabled

PmaxHspa =PMaxCell - maxHspaPowerOffset

2 HSDPA RRM

2.11 Dynamic PA Power Sharing R99/HSPA Carriers

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1 1 51

y g

False True

paRatio(F1)

paRatio(F2)

R99

HSDPA

GBR,R99

100%

0%

R99

GBR,R99

HSDPA

paRatio(F1)

paRatio(F2)

Powernot used

PAPowerRatio

Fixedpartitioning

Static PA power sharingbetween F1 and F2 carriers.

paRatio parameter must be setas follows:paRatio (F1) +paRatio (F2) 100%

UA5:

maxTxPower(Fx) Max Dl Power Capability(Fx)

Dynamic PA power sharingbetween F1 and F2 carriers.

paRatio can be set as follows:

UA6:

paRatio (F1) +paRatio (F2) > 100%

Max Power Amplification [dBm]

+10*log(paRatio (Fx)/100)

+Tx Losses [dB]

isPowerPoolingActivated(FDDCell)

paPoolingActivation(BTSEquipment)

maxPowerAmplification

paRatio

Power Sharing Activated ?

2.11 Dynamic PA Power Sharing R99/HSPA Carriers

2.11.1 Impact on DCH DL CAC and DL iRM

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1 1 52

p

paR

atio(F1)

p

aRatio(F2)

R99

HSDPA

GBR,

R99

100%

0%

R99

GBR,R99

HSDPA

paR

atio(F1)

p

aRatio(F2)

Powernot used

PAPowerR

atio

Fixedpartitioning

P traffic(F2)

= Max TxPower(F2)

Min Pw Hsdpa(F2)

- P CCC(F2) xActivity Factor Cch

- P E-DCH-P OCNS

UA5

P_traffic

= Max (R99+HSDPA) traffic allowed

UA6P traffic (F2)

= (Max Tx Power(F2) Min Pw Hsdpa (F2))

/ (1+paOverbookingRatio /100)

- P CCC (F2) xActivity Factor Cch

P E-DCH- P OCNS

activityFactorCcch

paOverbookingRatio

2 HSDPA RRM

2.12 HSDPA DL Power Available at NodeB

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1 1 53

DCHPTotNonHsdpa

- PCPICH

CCCNodeB

OCNS (opt.)

PDCHmargin

PMaxCell

PTotNonHsdpa =

PDCH + POCNS + PCCC + PE-DCH

BTSEquipment

BTSCell

dchPowerMargin

PDCHmargin = dchPowerMargin x(PTotNonHsdpa- PCPICH)

E-DCH

CPICH

PRemain

power availablefor

HSDPA traffic

DCH margin

Available power for HSDPA

PHsdpa = min (Premain, PmaxHspa)

NodeB

NodeB

HsdpaConf

2 HSDPA RRM

2.13 HSDPA Power - RAN Model

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1 1 54

FDDCell

isPowerPoolingActivated

activityFactorCcch

RNC

RadioAccessService

DedicatedConf

EdchCellClassHsdpaCellClass

NodeB

maxTxPower

eagchErgchEhichTotalPowerminimumPowerForHsdpamaxHspaPowerOffsetpaOverbookingRatio

Class2CellReconfParams

Class3CellReconfParams

BTSEquipment

BTSCell

HsdpaConf

dchPowerMargin

PaResource

maxPowerAmplification

paPoolingActivation

paRatio

maxTxPower

2 HSDPA RRM

2.14 HSDPA Power Distribution

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1 1 55

DCH

CCCNodeB

OCNS (opt.)

PMaxCell

E-DCH

PHsdpa

HS-DSCH

DCH margin

N

odeB

N

odeB

HS-SCCH

2 HSDPA RRM

2.15 HSDPA Full Power Usage

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1 1 56

Raw HS-DSCH power

remaining

Power ?

Schedule Data

Increase MCS by +1dB/CQI until:

- no more power- no more HS-PDSCH codes- max MCS reached

iCEM Activation* :

hsdpaFullPowerUsage(HSDPAConf)

(*) the equivalent xCEM feature is supported bydefault

QId0 QId1 QIdK

priority of QIdz(UEX,SPIY)for the next scheduling

Mac-d queues selected

for the next TTI scheduling

+ -

no

Select QIdzin priority order

yes

2 HSDPA RRM

2.16 HS-SCCH Power Control

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1 1 57

-8 dB13 30

-5 dB10 12

-3 dB8 9

0 dB1 7

PowerOffset

CQI

P-CPICH

distance

HS-SCCH to P-CPICHPower Offset

0 dB

-

+

HsdpaConf

BTSEquipment

BTSCell

hsscchPcOffset [130]

HS-SCCH

2 HSDPA RRM

2.17 HS-PDSCH Dynamic Power Allocation for 1st Transmission

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1 1 58

Power AdjustmentPower Adjustment

RLC

Throughput AvailablePower

CQI reported by UECQI selected by NodeB

Adjust Power

CQI = dB

OK

YES

NO

CQI rep. > CQI sel. ?

PHS-DSCH = PP-CPICH + + 3GPP(CQI)

RadioAccessService

HsdpaUserService measurementPowerOffset

3GPP(CQI, UEcategory) + ALU(CQIselected - CQIreported)

2 HSDPA RRM

2.18 UE Capabilities and Max Bit Rates

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9300 W-CDMA UA06 HSxPA Algorithms DescriptionHSDPA Algorithms Description Module 11 1 59

Category 6 UE CQI Mapping Table

-10 -8 -6 -4 -2 0 2 4 6 8 1010

15

20

25

C/I (dB)

softCQI

Soft CQI vs C/I - Pedestrian_a 1 RX

16-QAM3024 kbps530

16-QAM3024 kbps529

............

16-QAM1440 kbps516

QPSK1296 kbps515

QPSK1008 kbps414

QPSK864 kbps413

QPSK720 kbps312

QPSK576 kbps311

QPSK432 kbps310

QPSK288 kbps29

QPSK288 kbps28

QPSK144 kbps27

QPSK144 kbps16

QPSK144 kbps15QPSK0 kbps14

QPSK0 kbps13

QPSK0 kbps12

QPSK0 kbps11

out of range0

ModulationRLC ThroughputHS-PDSCH NumberCQI Value

Target BLER 10%

2 HSDPA RRM

2.19 HSDPA Flexible Modulation

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Transport Block SizeCQI

value Default Optimized

Num of 336bit MAC-d

PDUModulation Num of HS-PDSCH codes

1 137 1 QPSK 12 173 1 QPSK 13 233 1 QPSK 14 317 1 QPSK 15 377 365 1 QPSK 16 461 1 QPSK 17 650 1 QPSK 28 792 699 2 QPSK 29 931 2 QPSK10 1262 1036 3 QPSK 311 1483 1380 4 QPSK 312 1742 1711 5 QPSK 3

2

13 2279 2046 6 QPSK 414 2583 2404 7 QPSK 415 3319 3090 9 QPSK 5

UA05.x iCEM

Follow 3GPPAMC tables

iCEM Activation* :

hsdpaFlexibleModulationVsCodeActivation(HsdpaConf)

Static TFRC Table

UA06 iCEM

False

True

Nb of codes {1,2,,15} x Modulation {QPSK , 16QAM}Maximize nb of transmitted bits*

Codes limitation

16 QAM

TBS boost

QPSK

(*) the equivalent xCEM feature is supported by default

2 HSDPA RRM

2.20 CQI Modification Principles

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Scheduler

HS-DPCCH demodulationand CQI decoding

CQI adjustment based on BLER

CQI update due to: Power limitation Codes limitation

MAC-hs buffer occupancy MAC-d PDU size

CQIreported

CQIprocessed

CQIselected

HS-DPCCH detection

isolate a deficient UE which never responds(too many consecutive DTX detection)

maintain an acceptable BLERon first transmission

2 HSDPA RRM

2.21 HS-DPCCH detection based on CQI

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N successive

CQI detected?

NodeBNodeB

Initialisation

M successiveDTX detected?

YES

NO

NO

YES

UE not scheduled

UE scheduledN = M = 2

(hard coded)

HSD_OUT_SYNC

HSD_IN_SYNC

RxDemodulation(BTSEquipment)

2 HSDPA RRM

2.22 CQI adjustment based on BLER: blerRangeBasedAlgo

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hsdpaCqiBlerAdjustmentAlgo = blerRangeBasedAlgo

(HsdpaConf)

ACK

AC

K

NAC

K

ACK

1 23

bufferSize

4

bufferSize

nackNbMinnackNbMax

(static)

buffer is full

NbNACK nackNbMax?

CQIprocessed = CQIreported-1Yes

No

empty the buffer

2 HSDPA RRM

2.23 CQI adjustment based on BLER: OuterLoopLikeAlgorithm

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DeltaCqi

DeltaCqicur

#CQIreported0

DeltaCqicur

DeltaCqicur

DeltaCqiCur

hsdpaBlerObservationWindow

#CQIreported0

-5

+5

NACK NACK ACK

hsdpaBlerStepSize-

hsdpaBlerStepSize xhsdpaBlerTargetUpperLimit

hsdpaBlerTargetUpperLimit100 -

DeltaCqiCur

hsdpaCqiBlerAdjustmentAlgo = OuterLoopLikeAlgorithm

2 HSDPA RRM

2.24 CQI adjustment based on BLER: Dynamic BLER Adjustment

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DeltaCqi

DeltaCqicur

#CQIreported0

DeltaCqicur

DeltaCqicur

DeltaCqiCur

hsdpaBlerObservationWindow

#CQIreported0

-5

+5

NACK NACK ACK

hsdpaBlerStepSize-

DeltaCqiCur

hsdpaCqiBlerAdjustmentAlgo= dynamicOuterLoopAlgo

upStepXXBlerTargethsdpaBlerTargetXXLimit

hsdpaBlerTargetXXLimit100 -=

Low Medium High

hsdpaBlerStepSize x


2.24.1 CQI adjustment based on BLER: Dynamic BLER Adjustment

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Start

Ack/Nack?

ueSpeed ueSpeedThdAnd

adjustToChVar = TrueOr

cqiAverage cqiThdHigh

cqiThdLow < cqiAverage

deltaCqiCur += upStepMediumBlerTarget deltaCqiCur += upStepHighBlerTarget

deltaCqiCur += upStepLowBlerTarget

deltaCqiCur -= downStep

Nack

End

DTX

Ack

Yes No

Yes No

hsdpaAdjustBlerToChannelVariation


2.24.1 CQI adjustment based on BLER: Dynamic BLER Adjustment [cont.]

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hsdpaCqiBlerAdjustmentAlgorithmXcem

constBlerTarget

outerLoopLikeAlgo algorithm

dynamicHarqTxTarget

hsdpaBlerTargetUpperLimitXcem

Update RV Parameters

Transmit Data

Insert DTXIndication

Nret = Nret + 1Reset & Free

HARQ Process

Wait for Transmission

Wait for ACK/NACK Reception

ACK/NACK/DTX?

Nret > Nret_max

HARQHARQ

UE is Scheduled

ACK

YES

NACK

DTX

NO

See Previous Slide

2 HSDPA RRM

2.25 HS-PDSCH Power Adaptation for Retransmissions

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UE selected(retransmission nb > 0)

(CQI1st CQIret)xStep Const

UE is scheduled withTransmitted Pwr =

1st Tx power + Power_offsetdB

harqType

(hsdpaConf)

WithPowerAdaptation

2 HSDPA RRM

2.26 HS-DPCCH Power

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x

OVSFc c

DPCCH x

x

OVSFhs hs

HS-DPCCH x

x

OVSFd d

DPDCH x

Q

I

Modulation

NACK

DPCCH

c

hs CQIhs ACK

hs NACK

CQIACK

ackPowerOffset

cqiPowerOffset

nackPowerOffset

RadioAccessService

RNC

HsdpaUserService

2 HSDPA RRM

2.27 Scheduler iCEM

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QId0 QId1 QIdN

Retransmissions First

New Transmissions

UE Capabilities Available Power & Codes ACK/NACK/CQI Previously Transmitted PDUs

UE #0 power codes number of bits


UE #N power codes number of bits

Round Robin Fair MaxCQI Proportional Fair Alcatel-Lucent Min COST value

= C1COST = C1 = C1 = x C1 x C2 = *C1+*C2

hsdpaSchedulerAlgorithm(HsdpaConf)

2.27 Scheduler iCEM

2.27.1 Schedulers using Cost Function C1 only

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Goal

C1T = C1T-1 + with = 1 if scheduled, 0 otherwise

to serve mobiles one after the other

ROUND ROBIN

Cost function C1

Goal

C1T = 30 CQIinstTwith CQIinst is the latest CQI reported

to serve the mobile which reports the best radio conditions

MAX C/I

Cost function C1

Goal

C1T-1 = C1T-1

-1 + nb_bits_transmitted

To provide the same throughput to all mobiles

FAIR

Cost function C1

2.27 Scheduler iCEM

2.27.2 Schedulers using Cost Functions C1 and C2: C1

CLASSICAL PROPORTIONAL FAIR

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BTSCell

Goal

C1T = CQIavT / CQIinstT

with CQIavT = x CQIavT-1 + (1 - ) x CQIinstT

to favor mobiles that report a high CQI versus their averaged CQI totake benefit from instantaneous good radio conditions vs averageconditions

CLASSICAL PROPORTIONAL FAIR

Cost function C1

Goal

C1T = x C1T-1 + (1 - ) x (Nbits / Nbitsopt))

to favor mobiles that have not been served (#PDUs transmitted) versuswhat they requested (#PDUs according to the CQI reported), becausethere was not enough resources (power, codes or processing)

ALCATEL-LUCENT PROPORTIONAL FAIR

Cost function C1

hsdpaSchedulerWeightingFactor

hsdpaResource

= (2n-1)/2n with n =

2.27 Scheduler iCEM

2.27.3 Schedulers using Cost Functions C1 and C2: C2

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C2SPI

TC

ARP THP

QIdN

QIdM

SPI

TC

ARP THP

WEIGHT TBSAV

WEIGHTTBSAV

CQIAV

CQIAV

THROUGHPUTM

THROUGHPUTN

C2 = f(N_bits_transmitted, SPI weight, average CQI)

2.27 Scheduler iCEM

2.27.4 C2 Parameters

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BTSCell

hsdpaSpiRelativeWeightHsdpaConf

hsdpaUeCategoryThroughputWeighting

Th(QId1)

Th(QId2 )=

Weight[SPI(QId1)]

Weight[SPI(QId2)]x

TBS[CQIav(QId1)]

TBS[CQIav(QId2)]

ueCategoryProportionality

ueCategoryEquity

Th(QId1)

Th(QId2)=

Weight[SPI(QId1)]

Weight[SPI(QId2)]x

TBScat12[CQIav(QId1)]

TBScat12 [CQIav(QId2)]

Exercise

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Assumptions

QId0 QId1 QId2Retransmissions First

New Transmissions

Round Robin Fair MaxCQI Proportional Fair Alcatel-Lucent

Min COST value

hsdpaSchedulerAlgorithm(HsdpaConf)

1

1

1

NA

THP

3

2

1

0

QId

?

?

?

?

SPI

?

?

?

?

OLS Reported CQI

1Interactive10UE31Interactive10UE2

1Interactive12UE1

1Background12UE0

ARPTCCat.

QId3

10

10

15

25

10

10

15

24

10

13

15

22

10

15

15

20

10

10

15

25

10

10

25

24

10

13

25

22

10

15

25

20

10

13

25

22

10

15

25

20

T0

Exercise

Define the SPI value for each Qid

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Q

Assuming hsdpaSchedulerAlgorithm = Round Robin, find which UE is scheduledat each TTI:

Assuming hsdpaSchedulerAlgorithm = CQI, find which UE is scheduled at eachTTI:

1stTTI

2ndTTI

3rdTTI

4thTTI

5thTTI

6thTTI

7thTTI

8thTTI

9thTTI

3

2

10

QId

?

?

??

SPI

UE3

UE2

UE1

UE0

Cost

1stTTI

2ndTTI

3rdTTI

4thTTI

5thTTI

6thTTI

7thTTI

8thTTI

9thTTI

3

2

10

QId

?

?

??

SPI

UE3

UE2

UE1

UE0

Cost

Exercise

Assuming hsdpaSchedulerAlgorithm = Alcatel-Lucent calculate throughput

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Assuming hsdpaSchedulerAlgorithm Alcatel Lucent, calculate throughput

relative ration for each QId

hsdpaUeCategoryThroughputWeighting = ueCategoryEquity

QId1/QId2

QId1/QId3

1stTTI

2ndTTI

3rdTTI

4thTTI

5thTTI

6thTTI

7thTTI

8thTTI

9thTTI

QId2/QId3

QId0/QId3

QId0/QId2

QId0/QId1

Throughput relative ratio (C2 based)

100

15

100

10

100

11

100

12

100

13

100

14

50

2

50

3

50

4

50

5

50

6

50

7

50

8

100

9

100

16

50

1

hsdpaSpiRelativeWeight

SPI

Exercise

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hsdpaUeCategoryThroughputWeighting = ueCategoryProportionality

QId1/QId2

QId1/QId3

1stTTI

2ndTTI

3rdTTI

4thTTI

5thTTI

6thTTI

7thTTI

8thTTI

9thTTI

QId2/QId3

QId0/QId3

QId0/QId2

QId0/QId1

Throughput relative ratio (C2 based)

2.28 Scheduler xCEM

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QId0 QId1 QIdN

Retransmissions First per Priority Que

New Transmissions

UE Capabilities Available Power & Codes ACK/NACK/SNRMap,dB Previously Transmitted PDUs



UE #N power codes number of bits

CRmax proportionalThroughput Min COST value

CostCRmax = SW(u,q) . J(uq,) / CR(u,q) CostpropTh = (1/SPIweight(u,q)) * J(u,q) / CR(u,q)

hsdpaSchedulerAlgorithmXcem(HsdpaConf)

2.28 Scheduler xCEM

2.28.1 SNR ESTIMATION FOR HS-PDSCH

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QId0 QId1 QIdN

Min COST value

CQI

SNRMAP,dB

SNR (dB) of1 HS-PDSCH

AvailablePower perHS-PDSCH

code

SNRdB = SNRMAP,dB + P av/code + G + (ack,nack)

2.28 Scheduler xCEM

2.28.2 TFRC SELECTION

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SNR (dB) of1 HS-PDSCH Look Up Table

SE

TFRC:TBS

n HS-PDSCHModulation

TBS / n HS-PDSCH SE with maximal TBS and minimal n HS-PDSCH

SE = the number of bits per HS-PDSCH code per TTI

2.28 Scheduler xCEM

2.28.3 TFRC SELECTION Summary

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2.28 Scheduler xCEM

2.28.4 SPI management for GBR Mac-d flows

hsdpaSchedulerAlgorithmXcem = proportionalThroughput

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QIdx QIdy QIdw

Ranking prio.

QId0 QId1 QIdN

GBR Mac-d flowsNon GBR Mac-d flows

hsdpaGbrTbSizeMonitoringForgettingFactorPerSpi(HsdpaConf)

serviceMinRate (HsdschServiceParameterSet)

serviceLowRate(HsdschServiceParameterSet)

Throughput R

serviceMinRate = MAC-hs GBR - serviceLowRate

serviceMinRate

2.28 Scheduler xCEM

2.28.5 SPI management for non GBR Mac-d flows

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1 1 84

hsdpaSchedulerAlgorithmXcem = proportionalThroughput

SPI

TC

ARP THP

QIdN

QIdM

SPI

TC

ARP THP

WEIGHT SE

WEIGHTSE

SNR

SNR

THROUGHPUTM

THROUGHPUTN

2.28 Scheduler xCEM

2.28.6 SPI management

hsdpaSchedulerAlgorithmXcem = CRmax

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1 1 85

serviceMinRate(HsdschServiceParameterSet)

serviceLowRate(HsdschServiceParameterSet)

serviceMaxRate(HsdschServiceParameterSet)

serviceHighRate(HsdschServiceParameterSet)

serviceBFactor(HsdschServiceParameterSet)

serviceKFactor

(HsdschServiceParameterSet)

QId0 QId1 QIdN

COST x SW

Throughput R

serviceMinRate

OR

serviceMinRate = MAC-hsGBR - serviceLowRate

serviceMaxRate = MAC-hs GBR + serviceHighRate

DecreaseOR

Increase

COST

SW

2 HSDPA RRM

2.29 Scheduler: SPI management

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xCEM

P-CPICH

distance

HS-SCCH to P-CPICHPower Offset

0 dB

-

+

HS-SCCH

HS-SCCH transmit power2G HHO

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SRNC GSM/GPRS BSS

BCCH

Core Network

1

HS-P

DSCH

AssociatedD

PCHDL

&ULTB

F

3

FDD Cell GSM Cell

Cell Change Order2

activationHoGsmPsAllowed

isInterFreqMeasActivationAllowedisGsmCmodeActivationAllowed


isPatternAllowed

(CmodePatternSeqInfo)

3 HSDPA Mobility

3.2 3G->3G Intra-RNC Inter-freq HHO

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SRNC

HS-P

DSCH

AssociatedD

PCH

1P-CPICH

isHsdpaHhoWithMeasAllowedis3Gto3GWithoutIurAllowedforCSis3Gto3GWithoutIurAllowedforPS


Associated

DPCH

HS-PDSC

H

3

FDD Cell F1 FDD Cell F2

Radio Bearer Reconfiguration2

isIrmCacForInterFreqIntraRncEnable


3 HSDPA Mobility

3.3 3G->3G Inter-RNC Inter-freq HHO

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is3Gto3GWithoutIurAllowedforCSis3Gto3GWithoutIurAllowedforPS


SRNC Target RNC

P-CPICH

Core Network

1

HS-P

DSCH

AssociatedD

PCH

FDD Cell F1 FDD Cell F2

Radio Bearer Reconfiguration2

HS-PD

SCH

Associated

DPCH3

3 HSDPA Mobility

3.4 HSDPA over Iur

Core Network

Radio Link

ReconfigurationHS-DSCH

3

isHsdpaOverIurAsSrncAllowedisMacShHsdpaAllowed(RadioAccessService)

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Associated

DPC

H

SRNC DRNC

Primary Cell change(Event 1d)2

Associated DCH

HS-DSCH

4

HS-PDSCH

AssociatedD

PCH

1

Associated

DPC

H

HS-PD

SCH

5

isHsdpaAllowed(NeighbouringRNC)

isHsdpaAllowed(RemoteFDDCell)

isHsdpaOverIurAsDrncAllowed(RadioAccessService)

3.4 HSDPA over Iur

3.4.1 Bandwidth Management

Prior UA5.1, In case of Iub congestion the SRNC is not aware !

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HS-DSCH

Iub Bearer

IurBearerisMacShHsdpaAllowed


Usable creditIurCapacityAllocation

= true

DRNC

SRNC

Xoff message (link to Iub)

Xoff period

Usable credit

CapacityAllocation

Module Summary

This lesson covered the following topics:HSDPA ti ti i i l d i t d t

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HSDPA activation principles and associated parameters

HSDPA radio resource management and associated parameters

HSDPA mobility features and associated parameters

Self-assessment on the Objectives

Please be reminded to fill in the formSelf-Assessment on the Objectives

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Self-Assessment on the Objectivesfor this module

The form can be found in the first part

of this course documentation

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End of ModuleModule 1

Documents

2_HSDPA