121856086 Duw Capacity Dimensioning

Duw Dimensioning

Mapping basebands

PlugInUnit

Slot

TxDeviceGroup

RaxDeviceGroup

DuiDeviceGroup

RXM

TXM

DBMs are NOT visible in MOM, may however be visible in MP SW for resource handling

Proposed mapping:

• One RaxDeviceGroup per RXM on DUW.

• One TxDeviceGroup for all TXMs

• Future possibility to distribute TXMs over two TxDeviceGroups

RaxDeviceGroup

RXM

RaxDeviceGroup

RXM

TXM

TXM

TXM

TXM

Ric

LogicalBoard

LogicalBoard

LogicalBoard

LogicalBoard

LogicalBoard

Managed Objects

/ fROs

Subsystem appl. HW

/SW

hW capability

Duw capacity

DUW 30 DUW 20 DUW 10

Channel Elements768 DL

512 UL

384 DL

384 UL

128 DL

128 UL

DL Peak/cc (Mbps)

DL Peak Throughput (Mbps)

42

252

42

126

42

42UL Peak/cc (Mbps)

UL Peak Throughput (Mbps)

12

48

12

36

12

12

Number HSPA users with CPC

Peak Users/cc

1152

256

576

256

192

192

Each DUW can control up to 6 ccEach RU 4 carriers (60w)

Resource_ID

› A resource_ID (TXM) on a DUW can be used for the following purposes

– Up to 6 cell carriers HSDPA with a maximum of 30 HS codes and up to 128 users (max 96 users per cell)

– R99 DCH with a capacity of 128CE– 6 cell carriers EUL with up to 96 users (max 48 users per cell carrier)

› We can treat one TXM on a DUW as HSPDA processing resource.

Resources per duw

DUW 10 01 = Low capacity = 128CE = 1 RXM + 3 TXM (at most 1 for DCH)

DUW 20 01 = Medium capacity = 384CE = 3 RXM + 5 TXM (3)

DUW 30 01 = High capacity = 768CE = 4 RXM + 8 TXM (6)

R99 HS EUL

DUW 10 3 1 1 1DUW 20 5 3 3 1DUW 30 8 6 4 1

Maximum Resource_ID that can be configured forDUW

Type

Total Resource_ID available in

DUW

Duw10

HS

EUL

R99

DUW10 (3 Resources Id)

1 HS Resource (128 CE)1 Eul Resource (128CE)1 R99 Resources (128 CE)

DUW TypeTotal Resources_ID available in DUW

Maximum Resource_ID configurable

R99 HS EUL

DUW 10 3 1 1 1

duw20

HS

EUL

R99/HS

R99





R99 HS EUL

DUW 20 5 3 3 1

R99/HS

duw30

HS

EUL

R99/HS



R99/HSR99/HS

R99

R99R99



R99 HS EUL

DUW 30 8 6 4 1

A-dch ce reservation

• A-DCH are dedicated channels, used for UL/DL signaling (SRB) when using HSDPA service.

• A-DCH channels consume CEs both for UL/DL, but in DL these CEs are reserved from the DL R99 CE pool.

• It is important to calculate the amount of R99 CE as this A-DCH reservation effectively reduces the CE capacity for R99.

A-DCHs for UL&DL

With W11B feature “SRB on HSDPA”, no A-DCH CEs reservation is necessary!!

A-dch ce reservation• The cost for 1 A-DCH in RBS6000 is 0.5CE.

• The amount of A-DCH resources is reserved by default in a Baseband pool the minimum of Criteria 1 and Criteria 2 below:

• Criteria 1

A-DCH CE reserved = 1.3 * sum of the lowest of the values of either the RBS License Key “Number of HSDPA users per Cell” or RbsLocalCell::maxNumHsdpaUsers, determined cell-by-cell * 0.5

For eg,

1st cell: RBS License Key “Number of HSDPA users per Cell” = 64 and MO parameter RBSLocalCell:: maxNumHsdpaUsers = 32

2nd cell: RBS License Key “Number of HSDPA users per Cell” = 64 and MO parameter RBSLocalCell:: maxNumHsdpaUsers = 64

Therefore, A-DCH CE reserved = (32 + 64) x 1.3 x 0.5 = 63 CE

• Criteria 2

A-DCH CE reserved = 1.3 * number of HS Resource_ID * 128 * 0.5

Therefore, A-DCH CE reserved = (32 + 64) x 1.3 x 0.5 = 63 CE

Example 1

HS

EUL

HS

R99

R99


Example 1:DUW203 cc (32 HS users)2 HS resources1 EUL resource2 R99 resources

5 resources

numHScodesresources=2

numEulresources=1

2 R99 x 128 = 256 CE 63 CE required for A-DCH256-63 =193 CE for R99

Example 2

HS

EUL

HS

R99

R99


Example 2:DUW206 cc (32 HS users)2 HS resources1 EUL resource2 R99 resources

5 resources

numHScodesresources=2

numEulresources=1

2 R99 x 128 = 256 CE A-DCH: min(2*128*1.3*0.5,32*6*1.3*0.5)= min(165,125)=125 for A-DCH 256-125 =131 CE for R99

Dual carrier

Example 4:For Dual Carrier:The two cells involved in the MC connection must be configured in the same HSDPA resource_ID. For a 3 sector site, ideally we should define 3 HS Resources.

DUW20

DUW30

2 HS Resources1 EUL Resource2 R99 Resources

3 HS Resources1 EUL Resource4 R99 Resources

1R99 x 128 = 128 CE 125 CE required for A-DCH256-125 =131 CE for R99

Not possible to define 3 HS resources with 32 HS users, just 3CEs


Foa 3rd carrier

DUW20 (5 Resources Id) + DUW10 (3 Rerouces Id)

2 OSP Carriers and 1 VDF CarrierDual DUWDUW20 + DUW106 cc (32 HS users) 1st DUW (HS only on 2nd carrier)3 cc (32 HS users) 2nd DUW (HS)1 HS resource1 EUL resource3 R99 resources 1 HS resources 0 EUL resource

1 R99 resource


1 R99 x 128 = 128 CE 63 CE required for A-DCH128-63 =65 CE for R99

CEs on different DUWs do not workas a pool!!

Dual duw legacy – mad0226

DUW20 (5 Resources Id) + DUW20 (5 Rerouces Id)

2 OSP CarriersDual DUWDUW20 + DUW203 cc (64 HS users) 1st DUW (HS)3 cc (non HS) 2nd DUW2 HS resource1 EUL resource2 R99 resources 0 HS resource 0 EUL resource

3 R99 resource

2R99 x 128 = 256 CE 125 CE required for A-DCH256-84=131 CE for R99

3R99 x 128 = 384 CE 0 CE required for A-DCH384 CE for R99

Even though there are two idle resource (not used for EUL), the Maximum number of R99 resource is 3.

Total DL = 131+384=515

Dual duw legacy – mad0226

Final comments

• In order to make a proper DUW dimensioning, it has to be taken into account:

• Number of HS Users per cell

• Number of HSDPA Resources

• Number of EUL Resources

• Number of Carriers per sector

• Number of sectors

• Number of necessary UL&DL CEs

• maxDlPowerCapability: The maximum downlink power capability for the cell. The attribute is calculated by the RBS and reported to the RNC.(maxDlPowerCapability = Nominal power (carrier) - ∑ dlattenuation )

• maximumtransmissionpower: This parameter allows the operator to limit the maximum used power in the cell. In normal cases this is not necessary.

appendix I power parameters

maximumtransmissionpower

* 1 carrier node

Maxdlpowercapability

dlattenuation

maxTotalOutputPower= 20W

appendix I power parameters

maxTotalOutputPower= 40W

Maxdlpowercapability for F1 cells

dlattenuation

dlattenuation

20W

Maxdlpowercapability for F2 cells

20W

Maxdlpowercapability

dlattenuation

maxTotalOutputPower= 20W 1 carrier node

2 carriers node

appendix II ce fract dual duw

Parameter ul/dlLicFractbbpool2 (DUW same capacity)Fraction (%) of licensed CE assigned to 2nd BaseBandpool

CE UL UL CE DL DLBbPool1 DUW10 128 0.5 128 0.5 ulLicFractBbPool2 50%BbPool2 DUW10 128 0.5 128 0.5 DlLicFractBbPool2 50%

256 256


768 768


1024 1536

*This parameter must be adjusted/optimized depending on the CE consumption per BBPool.

appendix II ce fract dual duw

Parameter ul/dlLicFractbbpool2 (DUW different capacity)


512 512


512 512


640 896


896 1152

121856086 Duw Capacity Dimensioning

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