HSDPA Basics and Configuration

HSDPA HSDPA basicsbasics and and configurationconfiguration

Markus Vogel

TNSR, VF-D2

02.2006Markus Vogel (Vodafone D2)


High Speed Downlink Packet Access (=HSDPA) 3GPP rel. 5 feature; increased data rate up to 14.4 Mbit/s Introduction of a more efficient resource sharing than with

R99 by High Speed-Downlink Shared Channel (HS-DSCH)

Fast Transmission and Retransmission Scheduling for thenew HS-DSCH terminated in NodeB (every 2ms)

Link Adaptation (Adaptive Modulation and Coding) Hybrid Automatic Repeat reQuest (HARQ) Modulation Types: QPSK and 16-QAM no fast Power Control and no variable Spreading Factor



Difference between R99/R4 and HSDPA Rel.5


HSDPA HSDPA basicsbasics and and configurationconfiguration HSDPA Cannels

HS-SCCH

(DL) SF

=128

HS-DPC

CH (UL

) SF=25

6

HS-DSC

H (DL) S

F=16 (u

serdata

)

3.4kbps

A-DPCC

H (DL) S

F=256

3.4kbps

A-DPCC

H (UL)

64/384kb

ps DPDC

H (UL) S

F=16/4

Rel. 5 HSDPA UE

NodeB

no SHO forHS-Channels

R99-Channels (3.4 SRB & UL-TCH)

SHO possible

Ack/Nac

k & CQI

userdata

H-RNTI



Channelization Code Tree

1,02,0 2,1

4,34,24,14,0

8,0 8,1 8,2 8,3 8,4 8,5 8,6 8,7

16,0 16,1 16,2 16,3 16,4 16,5

Example with 5 HS-DSCH

16,0 branch blocked by Common Channels (see next slide)



Channelization Code Tree (16,0 branch)

16,032,0 32,1

64,364,264,164,0

128,0 128,1 128,2 128,3 128,4 128,5 128,6 128,7

C

P

I

C

H

2

5

6

,

0

B

C

H

2

5

6

,

1

A

I

C

H

2

5

6

,

2

P

I

C

H

2

5

6

,

3

2

5

6

,

5

F

A

C

H

P

C

H

H

S

-

S

C

C

H

H

S

-

S

C

C

H

H

S

-

S

C

C

H

2

5

6

,

4


HSDPA HSDPA basicsbasics and and configurationconfigurationFixed number of HS-PDSCH (SF=16) and HS-SCCH (SF=128) channels in a cell withtheir according channelization codes reserved for HSDPA usage only !! these codes are no more available for R99 traffic (DCHs/DCCHs) using 15 codes the secondary scrambling code has to be configured

(RNC database object cell iub: parameter sscode = 1) MOC at RC Parameter

NameDescription Parameter

Name (RNC/NodeB Database)

Command/MOC

(RNC/NodeB Database)

Name (N-if) Range LMT VF D2 Default

LMT

HSDLPKTACH Number of HS-PDSCH codes

Number of HS-PDSCH codes per cell. The number of HS-PDSCH codes of all cells under a Node B must be the same value.If HS-PDSCH = 15 and PCH is mapped on standalone PCCH, then Nr of HS-SCCHs


HSDPA HSDPA basicsbasics and and configurationconfiguration HS-SCCH: H-RNTI, TFRI and HARQ Info + CRC

HS-SCCH

(DL) SF

=128

HS-DPC

CH (UL

) SF=25

6

HS-DSC

H (DL) S

F=16 (u

serdata

)

3.4kbps

A-DPCC

H (DL) S

F=256

3.4kbps

A-DPCC

H (UL)

64/384kb

ps DPDC

H (UL) S

F=16/4

Rel. 5 HSDPA UE

NodeBAck

/Nack &

CQI

userdata

H-RNTI



HS-SCCH frame structure# HS-PDSCH

QPSK or16-QAM

Trans. Block SizeHARQ Info

L1 decoding InfoCRC

H-RNTI H-RNTI

HS-SCCHsubframe 0

HS-SCCHsubframe 1

HS-SCCHsubframe 3

HS-SCCHsubframe 4

HS-SCCHsubframe 0

HS-SCCHsubframe 1

HS-SCCHsubframe 2

2 ms

HS-DSCHsubframe 0

HS-DSCHsubframe 1

HS-DSCHsubframe 3

HS-DSCHsubframe 0

HS-DSCHsubframe 2

HS-PDSCH #1subframe 0










HS-DSCHsubframe 4HS-PDSCH #1subframe 4


Radio Frame Tf = 10 ms / 38400 chips / SFN = mod 4096

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Tslot = 2/3 ms= 2560 chips

Part 1 Part 2

tHS-PDSCH = 2 .Tslot= 5120 chips

Part 1:channelization code setmodulationH-RNTI masking

Part 2:Transport Block SizeHARQ informationRedundancy & Constellation versionNew Data indicatorH-RNTI masking



HSDPA multicode operation(code- and time-multiplex)

HS-SCCHsubframe 0

HS-SCCHsubframe 1

HS-SCCHsubframe 3

HS-SCCHsubframe 4

HS-SCCHsubframe 0

HS-SCCHsubframe 1

HS-SCCHsubframe 2













HS-SCCHsubframe 0

HS-SCCHsubframe 1

HS-SCCHsubframe 3

HS-SCCHsubframe 4

HS-SCCHsubframe 0

HS-SCCHsubframe 1

HS-SCCHsubframe 2

HS-SCCHsubframe 0

HS-SCCHsubframe 1

HS-SCCHsubframe 3

HS-SCCHsubframe 4

HS-SCCHsubframe 0

HS-SCCHsubframe 1

HS-SCCHsubframe 2



















# HS-PDSCHs(1..15 channels SF = 16)

# HS-SCCHs(1..4 channels SF = 128)

H-RNTI User 1H-RNTI User 2H-RNTI User 3

TTI = 2 ms

example:3 HS-SCCHs5 HS-PDSCHs


HSDPA HSDPA basicsbasics and and configurationconfigurationParameters from 3GPP specifications

UE Category

Mod. scheme

Maximum number of HS-DSCH

codes received

Minimum inter-TTI interval

Max. no. of bit per transport

block received within an HS-DSCH

TTI

Total number of

soft channel

bits

Maximum data rate;

Mbps

Theoreti-cal max. data rate

w/o channelcoding; Mbps

IR HARQ possible

at maximumdata rate

1 16QAM 5 3 7298 19200 1,22 1,6 No2 16QAM 5 3 7298 28800 1,22 1,6 Yes3 16QAM 5 2 7298 28800 1,82 2,4 No4 16QAM 5 2 7298 38400 1,82 2,4 Yes5 16QAM 5 1 7298 57600 3,65 4,8 No6 16QAM 5 1 7298 67200 3,65 4,8 Yes7 16QAM 10 1 14411 115200 7,21 9,6 No8 16QAM 10 1 14411 134400 7,21 9,6 Yes9 16QAM 15 1 20251 172800 10,13 14,4 No10 16QAM 15 1 27952 172800 13,98 14,4 No11 QPSK 5 2 3630 14400 0,91 1,2 No12 QPSK 5 1 3630 28800 1,82 2,4 No

UE categories supported in UMR5.0


HSDPA HSDPA basicsbasics and and configurationconfigurationMOC at RC Parameter


Name (RNC/Node B Database)

Command/MOC (RNC/Node B Database)

Name (N-if) Range LMT VF D2 Default

LMT

HSRARESMNGMT UE HS-DSCH Physical Layer Category

UE category for HSDPA, part of UE capabilities. Valid values are 1 12

ue_cate hsrrm HSRARESMNGMTID 1,...,64 61112

To activate HSDPA in an HSDPA supporting RNC the following object has to becreated in the RNC database:object hsrrm has to be created per UE category that shall be supported

Starting with HSDPA only UE class 12 will be available first but in RNC databaseclass 6 and 11 will also already been configured.

Using D2-CDD this object will be configured automatically by OTS if all HSDPA parameters ending with _12, _6 and _11 will be transmitted.


HSDPA HSDPA basicsbasics and and configurationconfiguration HS-DPCCH: HARQ Ack/Nack & CQI

HS-SCCH

(DL) SF

=128

HS-DPC

CH (UL

) SF=25

6

HS-DSC

H (DL) S

F=16 (u

serdata

)

3.4kbps

A-DPCC

H (DL) S

F=256

3.4kbps

A-DPCC

H (UL)

64/384kb

ps DPDC

H (UL) S

F=16/4

Rel. 5 HSDPA UE

NodeBAck

/Nack &

CQI

userdata

H-RNTI



HARQ Hybrid Automatic Repetition reQuest chase combining and incremental redundancy


HSDPA HSDPA basicsbasics and and configurationconfigurationMOC at RC Parameter


Name (RNC/NodeB Database)

Command/MOC

(RNC/NodeB Database)

Name (N-if) Range LMT

Unit VF D2 Default

LMT

Abweichender "Name (N-if)"

CDD 5.0 Param. Name

HSRARESMNGMT

CQI Feedback Cycle k

Period of repetition of a CQI measurement reports

cqi_cyclek hsrrm HSCQICYCLEK 0, 2, 4, 8, 10, 20, 40, 80, 160

ms 2 HSCQICYCLEK_6HSCQICYCLEK_11HSCQICYCLEK_12

HSRARESMNGMT

CQI Repetition Factor

Number of repetitions of a CQI report. Not necessary in case CQI Feedback Cycle k = 0

cqi_rep hsrrm HSCQIRPFCT 1, 2, 3, 4 - 1 HSCQIRPFCT_6HSCQIRPFCT_11HSCQIRPFCT_12

HSRARESMNGMT

ACK-NACK Repetition Factor

Number of repetitions of ACK/NACK reports

ack_nack_rep hsrrm HSACKNACKRPFCT 1, 2, 3, 4 - 1 HSACKNACKRPFCT_6HSACKNACKRPFCT_11HSACKNACKRPFCT_12

If ack_nack_rep > 1 an HS-DSCH subframe associated Ack/Nacksubframe will be repeated (ack_nack_rep 1) times in the followingconsecutive subframes.

During this time (subframes with Ack/Nack repetition) whetherreceiving nor decoding of any new subframes on HS-DSCH ispossible/allowed.



CQI Reporting Feedback Cycle and Repetition

HS-DSCH

# 2

HS-DSCH

# 3

HS-DSCH

# 4

HS-DSCH

# 5

HS-DSCH

# 6

HS-DSCH

# 7

HS-DSCH

# 8

HS-DSCH

# 9

HS-DSCH

# 10

HS-DSCH

# 11

HS-DSCH

# 12

HS-DSCH

# 13

HS-DSCH

# 14

HS-DSCH

# 15

HS-DSCH

# 16

- CQI# 1 -CQI# 1 -

CQI# 1 -

CQI# 1 A

CQI# 1 A

CQI# 1 N

CQI# 1 A

CQI# 1 -

CQI# 1 -

CQI# 1 A

CQI# 1 A

CQI# 1 A

CQI# 1 A

CQI# 1 A

CQI# 1

2 ms

tUEP ~ 5 msCQI Feedback cycle k = 2 msCQI Repetition Factor = 1

ACK-NACK Repetition Factor = 1

- CQI# 2 - -CQI# 3 A A

CQI# 1 A A

CQI# 2 N N

CQI# 3 A A

CQI# 1 - -

CQI# 2 A A

CQI# 3

HS-DSCH

# 2

HS-DSCH

# 3

HS-DSCH

# 4

HS-DSCH

# 5

HS-DSCH

# 6

HS-DSCH

# 7

HS-DSCH

# 8

HS-DSCH

# 9

HS-DSCH

# 10

HS-DSCH

# 11

HS-DSCH

# 12

HS-DSCH

# 13

HS-DSCH

# 14

HS-DSCH

# 15

HS-DSCH

# 16tUEP ~ 5 ms

CQI Feedback cycle k = 4 msCQI Repetition Factor = 3

ACK-NACK Repetition Factor = 2

HS-DPCCH

# 0

HS-DPCCH

# 1

HS-DPCCH

# 2

HS-DPCCH

# 3

HS-DPCCH

# 4

HS-DPCCH

# 5

HS-DPCCH

# 6

HS-DPCCH

# 7

HS-DPCCH

# 8

HS-DPCCH

# 9

HS-DPCCH

# 10

HS-DPCCH

# 11

HS-DPCCH

# 12

HS-DPCCH

# 13


HSDPA HSDPA basicsbasics and and configurationconfiguration CQI mapping table UE class 11 and 12 (CQI: 0..15) [3GPP 25.214]

0 N/A1 137 1 QPSK 0 68,52 173 1 QPSK 0 86,53 233 1 QPSK 0 116,54 317 1 QPSK 0 158,55 377 1 QPSK 0 188,56 461 1 QPSK 0 230,57 650 2 QPSK 0 325,08 792 2 QPSK 0 396,09 931 2 QPSK 0 465,5

10 1262 3 QPSK 0 631,011 1483 3 QPSK 0 741,512 1742 3 QPSK 0 871,013 2279 4 QPSK 0 1139,514 2583 4 QPSK 0 1291,515 3319 5 QPSK 0 1659,5

approx. data rate [kbps]CQI value

Transport Block Size Modulation

Reference power

adjustment Number ofHS-PDSCH

NIR XR V

Out of range4800 0


HSDPA HSDPA basicsbasics and and configurationconfiguration CQI mapping table UE class 11 and 12 (CQI: 16..30) [3GPP 25.214]

0 N/A16 3319 5 QPSK -1 1659,517 3319 5 QPSK -2 1659,518 3319 5 QPSK -3 1659,519 3319 5 QPSK -4 1659,520 3319 5 QPSK -5 1659,521 3319 5 QPSK -6 1659,522 3319 5 QPSK -7 1659,523 3319 5 QPSK -8 1659,524 3319 5 QPSK -9 1659,525 3319 5 QPSK -10 1659,526 3319 5 QPSK -11 1659,527 3319 5 QPSK -12 1659,528 3319 5 QPSK -13 1659,529 3319 5 QPSK -14 1659,530 3319 5 QPSK -15 1659,5

approx. data rate [kbps]CQI value

Transport Block Size Modulation

Reference power

adjustment Number ofHS-PDSCH

NIR XR V

Out of range4800 0



HSDPA configuration examples

1 CHC per 3 cells max. # of HS-PDSCH per cell

5 (16QAM/QPSK) max. # of HS-SCCH per cell

4

1 CHC per 1 cell max. # of HS-PDSCH per cell

15 max. # of HS-SCCH per cell

4


HSDPA HSDPA basicsbasics and and configurationconfiguration HSDPA impact on Node B


HSDPA HSDPA basicsbasics and and configurationconfiguration HSDPA Influence on UMR2.0 Node B Hardware



HSDPA Influence on UMR3.5 Node B Hardware



RNC HW architecture Current RNC is prepared to support higher HSDPA

throughput requirementsSmooth upgrade by introduction of only two cards: HSDST (High Speed DL Shared channel Trunk) HSPRLC (High Speed Packet Radio Link Control)



Model Unit eCMF (STM1) HU (HSDPA upgrade)HSDPA data flow controlbetween RNC and Node Bby new 160 Mbps card (HSDST)

Add2 HSPRLC (40 Mbps UL + DL)

http://mmoweb/home/abteilung/technik/t/tr/tn/tns/tnsr/veroeffentlichungen/



Model Unit cM+ HU (HSDPA upgrade)

Replace 10 PRLC by2 HSPRLC (40 Mbps UL + DL)

http://mmoweb/home/abteilung/technik/t/tr/tn/tns/tnsr/veroeffentlichungen/



HSDPA Traffic Within the RNC

Documents

HSDPA Basics and Configuration