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ZTE UMTS Power Control

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Page 1: 67866411 ZTE UMTS Power Control New

ZTE UMTS Power Control

Page 2: 67866411 ZTE UMTS Power Control New

Technical Description

• R99 Power Control

• HSDPA Power Control

• HSUPA Power Control

Page 3: 67866411 ZTE UMTS Power Control New

R99 Power Control

• Uplink Open Loop Power Control of R99

• Downlink Open Loop Power Control of R99

• Uplink Inner Loop Power Control of R99

• Downlink Inner Loop Power Control Of R99

• Uplink Outer Loop Power Control of R99

• Downlink Power Balancing of R99

Page 4: 67866411 ZTE UMTS Power Control New

UL Open Loop Power Control of R99 Common Channel (PRACH)

Preamble_Initial_Power Primary CPICH DL TX power CPICH_RSCP UL interference Constant Value

The transmission power of the first preamble :

Where :1. Primary CPICH DL TX power (Pcpi

chPwr) : the transmission power of the P-CPICH

2. CPICH_RSCP : measured by UE3. UL interference : measured and ob

tained by NodeB and updated in real time in SIB7

4. Constant Value (ConstVal) : a value related with the cell environment. It is a value depends on the service rate and quality carried by PRACH.

Page 5: 67866411 ZTE UMTS Power Control New

The transmission power of the PRACH control part :

P p-m StepPower Rampernitial_PowPreamble_IwerPRACH_C_Po Where,1 、 Power Ramp Step (PRStep) : the power offset between two continuous preambles.2 、 Pp_m (POPpm[MAX_ PRACH _TFC]) : the power offset between the control channel and the last preamble of the message part.

The transmission power of the PRACH data part :

c

d

( BetaC[MAX_ PRACH _TFC]) (BetaD[MAX_ PRACH _TFC])

UL Open Loop Power Control of R99 Common Channel (PRACH)

Page 6: 67866411 ZTE UMTS Power Control New

UL Open Loop Power Control of R99 Dedicated Channel (DPCCH/DPDCH)

Where1 ) DPCCH_Power_offset : determined by DPCCH open loop power control method.2 ) CPICH_RSCP : the CPICH channel code power

RSCPCPICHoffsetPowerDPCCHpowerInitialDPCCH _____

PowerTXCPICHdBPGdBmINdBNEOffsetPowerDPCCH TTb __)())(()(/__ 0

WhereEb/No: : quality factor of the DPCCH PILOT domain (DpcchPilotEbN0).NT+IT : uplink interference, PG : service processing gain, 256.CPICH_TX_Power (PcpichPwr) : transmission power of the P-CPICH.

DPCCH Initial Power :

Page 7: 67866411 ZTE UMTS Power Control New

Determining the gain factor c and d( 1 ) For single service : c and d are configured directly according to different service rates and different TF

C. It is usually required that either c or d must be 15.

For example: UL PS64k streaming/interactive/background Service

c dTFC Format

0×336, 0×144 15 1

1×336, 0×144 15 14

2×336, 0×144 11 15

4×336, 0×144 8 15

0×336, 1×144 15 8

1×336, 1×144 14 15

2×336, 1×144 10 15

4×336, 1×144 8 15

( 2 ) For multiple service : c and d are calculated by RNC according to reference TFC.

UL Open Loop Power Control of R99 Dedicated Channel (DPCCH/DPDCH)

Page 8: 67866411 ZTE UMTS Power Control New

Downlink Open Loop Power Control of R99 Common Channel

P-CPICH power is configured depends on the proportion of maximum transmission power of the cell.

Other downlink common channel power is configured as a power offset of P-CPICH power.

Channel Power Parameter Default Value

P-CPICH PcpichPwr 33dBm

P-SCH PschPwr -3dB

S-SCH SschPwr -4dB

AICH AichPwr -7dB

PICH PichPwr -7dB

P-CCPCH (BCH ) BchPwr -3dB

S-CCPCH bears the transport channel of PCH and FACH, and the number of FACH channels is variable, the transmission power (PchPwr) of each PCH and the maximum transmission power (MaxFachPwr) allowed for each FACH beared by a certain S-CCPCH is specified in related protocol.

Page 9: 67866411 ZTE UMTS Power Control New

Downlink Open Loop Power Control of R99 Dedicated Channel

Initial power of DL DPCH data domain is calculate based on CPICH Ec/N0

The power of control domain (TPC/CFTI/Pilot) is power offset relative to the power of data domain.

DL DPCH TFCI :PO1 (DpchPO1), DL DPCH TPC :PO2 (DpchPO2) ; DL DPCH PIOLT :PO3(DpchPO3)

The maximum and minimum values of DPCH power is MaxDlDpchPwr and MinDlDpchPwr.

totaltxLcpichc

CPICHtxreq

b

inittx PkN

EP

PG

NE

P ,

k21k

minmaxmin

0

,0,

101

Page 10: 67866411 ZTE UMTS Power Control New

Uplink Inner Loop Power Control of R99

UlIlPcAlg =1 , the transmission power can be adjusted in every timeslot.

Suppose the TPCs of all radio link sets are 1, then TPC_cmd=1 (to increase transmission power).

Suppose one TPC coming from any radio link set is 0, then TPC_cmd=-1 (TPC being 0 indicates the transmission power should be decreased).

UlIlPcAlg =2, the transmission power is adjusted once every five timeslots.

Page 11: 67866411 ZTE UMTS Power Control New

Downlink DPCH power is P(k) = P(k - 1) + PTPC(k) + Pbal(k) ,where1)

is the power adjustment step (TpcDlStep), and Power_Raise_Limit is PwrRaisLim.

Two power control modes (DPCMode) are also available to determine PTPC(k):

• DPCMode = 0, UE sends a TPC command at each timeslot. • DPCMode = 1, UE sends the same TPC command for three timeslots.

(ZTE RNC not support now)2) Pbal(k) is a correction value obtained according to the downlink power

control process.

Downlink Inner Loop Power Control Of R99

0)(TPC ife_LimitPower_Rais)( and 1)(TPC ife_LimitPower_Rais)( and 1)(TPC if

0)(

est

est

est

kkkkk

kP TPCsum

TPCsum

TPC

TPC

TPC

1

indow_Sizeveraging_WDL_Power_A

)()(k

kiTPCsum iPk

TPC

Page 12: 67866411 ZTE UMTS Power Control New

Uplink Outer Loop Power Control of R99

As to DCH service , Using “Threshold Algorithm” Based on CRC to modify SIRtarget in time: In a valid time window (ValidTimeWin), sum all the transport block

that have received as BLOCK_SUM, and sum all the error blocks as BLOCKerror_SUM.

Increase SIRtarget immediately as soon as BLOCKerror_SUM is higher than the error transport block number threshold (ErrorThresh) while BLOCK_SUM is no more than a predefined number (BLERAccpPeriod) ;

Decrease SIRtarget only when BLOCK_SUM is no less than the BLERAccpPeriod and the BLOCKerror_SUM is less than the ErrorThresh,

Normally, the increased step (UlSirTargUpStep) is bigger than decreased step (UlSirTargDnStep) .

The initial SIR target is ULInitSIR; The maximum SIR target is ULMaxSIR; The minimum SIR target is ULMinSIR;

Page 13: 67866411 ZTE UMTS Power Control New

Downlink Power Balancing of R99

A simple formula for calculating Pbal is as follows:

Where, Pref is a reference power, which equals to DL Reference Power.

Pinit is the code power of the last timeslot in the previous adjustment period.

r is the adjustment convergence coefficient (AdjRatio) that ranges 0~1.

(1 )( ) 0.5bal ref P CPICH initP r P P P precision dB

N

PowerferDLPowerferDL

N

j

j 1

_Re__Re_

PowerCPICHPPdBPowerferDL DPDCHjj __)(_Re_

3)( POTCPdBmPDPDCHj

Page 14: 67866411 ZTE UMTS Power Control New

DpchPO1

Parameter name

DPCH PO1

Abbreviated name

DpchPO1

3GPP name PO1

3GPP reference TS 25.423;TS 25.433

Description This parameter indicates the power offset between the DL DPCH TFCI domain and the DPCH data domain.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (0..6) dB step 0.25 dB

Default value (Service related)

Page 15: 67866411 ZTE UMTS Power Control New

DpchPO2

Parameter name

DPCH PO2

Abbreviated name

DpchPO2

3GPP name PO2

3GPP reference TS 25.423;TS 25.433

Description This parameter indicates the power offset between the DL DPCH TPC domain and the DPCH data domain.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (0..6) dB step 0.25 dB

Default value (Service related)

Page 16: 67866411 ZTE UMTS Power Control New

DpchPO3

Parameter name

DPCH PO3

Abbreviated name

DpchPO3

3GPP name PO3

3GPP reference TS 25.423;TS 25.433

Description This parameter indicates the power offset between the DL DPCH PILOT domain and the DPCH data domain.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (0..6) dB step 0.25 dB

Default value (Service related)

Page 17: 67866411 ZTE UMTS Power Control New

UlIlPcAlg

Parameter name

Uplink Inner Loop Power Control Algorithm

Abbreviated name

UlIlPcAlg

3GPP name Power Control Algorithm

3GPP reference TS 25.331

Description This parameter indicates which uplink inner loop power control algorithm is used. For algorithm 1 inner loop power control is done every timeslot. For algorithm 2 inner loop power control is done every 5 timeslots.

Working scope UTRAN Cell and Service Related

Value range 1: Algorithm 12: Algorithm 2

Default value Algorithm 1

Page 18: 67866411 ZTE UMTS Power Control New

TpcStepSize

Parameter name

TPC Step Size

Abbreviated name

TpcStepSize

3GPP name TPC step size

3GPP reference TS 25.331

Description This parameter indicates the TPC step size for uplink inner loop power control. Only when inner loop power control algorithm 1 is selected, this parameter needs to be configured. For algorithm 2, default value of TPC step size is 1 and this parameter is not needed.

Working scope UTRAN Cell and Service Related

Value range (1,2)dB

Default value 1dB

Page 19: 67866411 ZTE UMTS Power Control New

DPCMode

Parameter name

DPC Mode

Abbreviated name

DPCMode

3GPP name DPC Mode

3GPP reference TS 25.433; TS 25.423

Description This parameter indicates which downlink inner loop power control algorithm is used. There are two kinds of downlink inner power control algorithm: single TPC and TPC triplet in soft. And which algorithm to be used should be configured to UE.

Working scope UTRAN Cell

Value range 0: Single TPC1: TPC Triplet in Soft

Default value single TPC

DPC Mode

Page 20: 67866411 ZTE UMTS Power Control New

TpcDlStep

Parameter name

TPC DL Step Size

Abbreviated name

TpcDlStep

3GPP name FDD TPC Downlink Step Size;

3GPP reference TS 25.433; TS 25.423

Description This parameter indicates the step size fo the downlink inner loop power control. Normally, the value in good channel condition is smaller than in bad channel condition.

Working scope UTRAN Cell and Service Related

Value range (0.5, 1, 1.5, 2)dB

Default value 1dB

DPC Mode

Page 21: 67866411 ZTE UMTS Power Control New

MaxDlDpchPwr

Parameter name

DPCH Maximum DL Power

Abbreviated name

MaxDlDpchPwr

3GPP name Maximum DL Power; Maximum DL TX Power

3GPP reference TS 25.423; TS 25.433

Description This parameter indicates the maximum downlink DPCH transmission power. When performing the downlink inner loop power control, the new transmission power must be smaller than or equal to the configured DPCH Maximum DL Power. If the newly computed transmission power is larger than the configured DPCH Maximum DL Power, make it equal to the configured DPCH Maximum DL Power.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (-35..15 ) dB step 0.1 dB

Default value (Service related)

Page 22: 67866411 ZTE UMTS Power Control New

MinDlDpchPwr

Parameter name

DPCH Minimum DL Power

Abbreviated name

MinDlDpchPwr

3GPP name Minimum DL Power

3GPP reference TS 25.423; TS 25.433

Description This parameter indicates the minimum downlink DPCH transmission power. When performing the downlink inner loop power control, the new transmission power must be larger than or equal to the configured DPCH Minimum DL Power. if the newly computed transmission power is smaller than the configured DPCH Minimum DL Power, make it equal to the configured DPCH Minimum DL power.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (-35..15) dB step 0.1 dB

Default value (Service related)

Page 23: 67866411 ZTE UMTS Power Control New

MaxUlDpchPwr

Parameter name Maximum Allowed Uplink DPCH Transmission Power

Abbreviated name

MaxUlDpchPwr

3GPP name Maximum allowed UL TX power; Maximum Allowed UL Tx Power

3GPP reference TS 25.423; TS 25.331

Description This parameter indicates the maximum allowed UL power used to limit the maximum transmission power of the UE. When performing the uplink inner loop power control, the newly calculated transmission power of UE may be over the Maximum allowed UL TX power, in such case the UE can only transmit with Maximum allowed UL TX power.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range ( -50..33 ) dBm step 1

Default value 33dBm

Page 24: 67866411 ZTE UMTS Power Control New

UlSirTargUpStep

Parameter name

Uplink SIR Target Up Step Size

Abbreviated name

UlSirTargUpStep

3GPP name —

3GPP reference —

Description This parameter indicates the step of increasing the uplink SIR target.

Working scope UTRAN Cell and Service Related

Value range (0.1..0.5)dB step 0.1dB

Default value UL PS 384kbps: 0.5dBOther services: 0.3dB

Page 25: 67866411 ZTE UMTS Power Control New

UlSirTargDnStep

Parameter name

Uplink SIR Target Down Step Size

Abbreviated name

UlSirTargDnStep

3GPP name —

3GPP reference —

Description This parameter indicates the step of decreasing the uplink SIR target.

Working scope UTRAN Cell and Service Related

Value range (0.1..0.5)dB step 0.1dB

Default value 0.1dB

Page 26: 67866411 ZTE UMTS Power Control New

ULInitSIR

Parameter name

Uplink Initial SIR Target

Abbreviated name

ULInitSIR

3GPP name UL SIR Target

3GPP reference TS 25.423; TS 25.433

Description This parameter indicates the initial SIR target of the uplink physical channel. The target SIR is the standard to perform the uplink inner loop power control. The value has effect on the convergence speed of the power control.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range ( -8.2..17.3 ) dB step 0.1 dB

Default value (Service related)

Page 27: 67866411 ZTE UMTS Power Control New

ULMaxSIR

Parameter name

Maximum Uplink SIR Target

Abbreviated name

ULMaxSIR

3GPP name Maximum Uplink SIR

3GPP reference TS 25.423; TS 25.433

Description This parameter indicates the maximum uplink target SIR, which is used to give the range for the target SIR of the outer loop power control.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range ( -8.2..17.3 ) dB step 0.1 dB

Default value (Service related)

Page 28: 67866411 ZTE UMTS Power Control New

ULMinSIR

Parameter name

Minimum Uplink SIR Target

Abbreviated name

ULMinSIR

3GPP name Minimum Uplink SIR

3GPP reference TS 25.423

Description This parameter indicates the minimum uplink target SIR, which is used to give the range for the target SIR of the outer loop power control.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range ( -8.2..17.3 ) dB step 0.1 dB

Default value (Service related)

Page 29: 67866411 ZTE UMTS Power Control New

Technical Description

• R99 Power Control

• HSDPA Power Control

• HSUPA Power Control

• MBMS Power Control

Page 30: 67866411 ZTE UMTS Power Control New

HSDPA Power Control

• Power Offsets of HS-DPCCH-related Domains

• HS-PDSCH Measurement Power Offset

• Total Power Allocation of HSDPA

Page 31: 67866411 ZTE UMTS Power Control New

Power Offsets of HS-DPCCH-related Domains

HS-DPCCH carries the ACK, NACK and CQI information, It’s power control is same with UL DPCCH power control, except that the power gain factor βhs is different.

In normal mode, βhs is calculated by UE according to ∆ACK, ∆ACK and ∆CQI using the following formula:

2010DPCCHHS

chs

Where: βc is the power gain factor of UL DPCCH. When HS-DPCCH is activated, each slot of HS-DPCCH, ∆HS-DPCCH is set with the following methods: i) When HS-DPCCH carries the HARQ ACK information: If ACK = 1, then ∆HS-DPCCH = ∆ACK; if ACK = 0, then ∆HS-DPCCH = ∆NACK. ii) When HS-DPCCH carries the CQI information: ∆HS-DPCCH = ∆CQI.

Page 32: 67866411 ZTE UMTS Power Control New

HS-PDSCH Measurement Power Offset

When measuring CQI, UE supposes the power of HS-PDSCH is:

Where, Γ is the measurement power offset (MeasPwrOffset); Δ is obtained by UE through querying the table depending on

the UE category.

CPICHHSPDSCH PP

Page 33: 67866411 ZTE UMTS Power Control New

Total Power Allocation of HSDPA

There are three HSDPA total power allocation methods. The system determines which allocation method applies according to the parameter HsdschTotPwrMeth configured in OMCR.

The al l ocatedpower f or cel l

Based on the OMCconfi gured , sel ect the next step

NODEB al l ocatethe power f reel y

RNC al l ocatethe power

dynami cal l y

RNC al l ocatethe powerstati cl l y

Page 34: 67866411 ZTE UMTS Power Control New

Total Power Allocation of HSDPA——Static allocation by RNC

Configure the percentage of power occupied by HSDPA: HspaPwrRatio in OMCR.

Total Power Allocation of HSDPA——Dynamic allocation by RNC

i) Initial HS-PDSCH and HS-SCCH total power (HspaPwrRatio) is configured in OMC

Rii) During the system operation,

the HS-PDSCH and HS-SCCH total power dynamically adjusted according to condition

described is right figure.

Total Power Allocation of HSDPA

Page 35: 67866411 ZTE UMTS Power Control New

Total Power Allocation of HSDPA——Free allocation of NodeB

Free power allocation is determined by algorithm of NodeB based on available power, service priority and CQI.

Total Power Allocation of HSDPA

Page 36: 67866411 ZTE UMTS Power Control New

AckPwrOffset

Parameter name

HS-DPCCH ACK Power Offset for Single Radio Link or Intra-NodeB Handover

Abbreviated name

AckPwrOffset

3GPP name ACK Power Offset

3GPP reference TS 25.433

Description This parameter indicates the power offset of HS-DPCCH ACK domain relative to DPCCH when UE has a single link or is in the intra-NodeB handover.

Working scope RNC

Value range 0..9

Default value 6

Page 37: 67866411 ZTE UMTS Power Control New

NackPwrOffset

Parameter name

HS-DPCCH NACK Power Offset for Single Radio Link or Intra-NodeB Handover

Abbreviated name

NackPwrOffset

3GPP name NACK Power Offset

3GPP reference TS 25.433

Description This parameter indicates the power offset of HS-DPCCH NACK domain relative to DPCCH when UE has a single link or is in the intra- NodeB handover.

Working scope RNC

Value range 0..9

Default value 6

Page 38: 67866411 ZTE UMTS Power Control New

CqiPwrOffset

Parameter name

HS-DPCCH CQI Power Offset for Single Radio Link or Intra-NodeB Handover

Abbreviated name

CqiPwrOffset

3GPP name CQI Power Offset

3GPP reference TS 25.433

Description This parameter indicates the power offset of HS-DPCCH CQI domain relative to DPCCH when UE has a single link or is in the intra-NodeB handover.

Working scope RNC

Value range 0..9

Default value 5

Page 39: 67866411 ZTE UMTS Power Control New

InterAckPwrOfst

Parameter name

HS-DPCCH ACK Power Offset for Inter-NodeB Handover

Abbreviated name

InterAckPwrOfst

3GPP name ACK Power Offset

3GPP reference TS 25.433

Description This parameter indicates the power offset of HS-DPCCH ACK domain relative to DPCCH when UE is in inter-Node B handover.

Working scope RNC

Value range 0..9

Default value 6

Page 40: 67866411 ZTE UMTS Power Control New

InterNackPwrOfst

Parameter name

HS-DPCCH NACK Power Offset for Inter-NodeB Handover

Abbreviated name

InterNackPwrOfst

3GPP name NACK Power Offset

3GPP reference TS 25.433

Description This parameter indicates the power offset of HS-DPCCH NACK domain relative to DPCCH when UE is in inter-Node B handover.

Working scope RNC

Value range 0..9

Default value 6

Page 41: 67866411 ZTE UMTS Power Control New

InterCqiPwrOfst

Parameter name

HS-DPCCH CQI Power Offset for Inter-NodeB Handover

Abbreviated name

InterCqiPwrOfst

3GPP name CQI Power Offset

3GPP reference TS 25.433

Description This parameter indicates the power offset of HS-DPCCH CQI domain relative to DPCCH when UE is in inter-NodeB handover.

Working scope RNC

Value range 0..9

Default value 5

Page 42: 67866411 ZTE UMTS Power Control New

CqiCycle

Parameter name

CQI Feedback Cycle

Abbreviated name

CqiCycle

3GPP name CQI Feedback Cycle

3GPP reference TS 25.433

Description This parameter indicates the CQI feedback cycle, to determine the time to send CQI. When the value is 0, the UE does not feed back the channel quality.

Working scope RNC

Value range (0, 2, 4, 8, 10, 20, 40, 80, 160) ms

Default value 2ms

Page 43: 67866411 ZTE UMTS Power Control New

CqiRepFactor

Parameter name

CQI Repetition Factor

Abbreviated name

CqiRepFactor

3GPP name CQI Repetition Factor

3GPP reference TS 25.433

Description This parameter indicates the CQI repetition factor, indicating the number of consecutive repetitions of the CQI.

Working scope RNC

Value range 1..4

Default value 1

Page 44: 67866411 ZTE UMTS Power Control New

AnackRepFactor

Parameter name

ACK-NACK Repetition Factor

Abbreviated name

AnackRepFactor

3GPP name ACK-NACK Repetition Factor

3GPP reference TS 25.433

Description This parameter indicates the ACK-NACK repetition factor, indicating the number of consecutive repetitions of the ACK and NACK.

Working scope RNC

Value range 1..4

Default value 1

Page 45: 67866411 ZTE UMTS Power Control New

HsscchPwrOffset

Parameter name

HS-SCCH Power Offset

Abbreviated name

HsscchPwrOffset

3GPP name HS-SCCH Power Offset

3GPP reference TS 25.433

Description This parameter indicates the HS-SCCH power offset, which is relative to the power of downlink DPCH pilot bits.

Working scope Service Related

Value range (-32..+31.75) dB step 0.25

Default value 4

Page 46: 67866411 ZTE UMTS Power Control New

HspaPwrRatio

Parameter name

HSPA Total Downlink Power

Abbreviated name

HspaPwrRatio

3GPP name HS-PDSCH, HS-SCCH,E-AGCH, E-RGCH and E-HICH Total Power

3GPP reference TS 25.433

Description The parameter indicates the initial value of the total transmission power of HS-PDSCH, HS-SCCH, E-AGCH, E-RGCH and E-HICH codes, which is a ratio relative to the maximum DL transmission power of the cell.

Working scope UTRAN Cell

Value range (1..100) % step 1%

Default value 40 %

Page 47: 67866411 ZTE UMTS Power Control New

MeasPwrOffset

Parameter name

HS-PDSCH Measurement Power Offset

Abbreviated name

MeasPwrOffset

3GPP name Measurement Power Offset

3GPP reference TS 25.433

Description This parameter indicates the assumed HS-PDSCH power offset relative to P-CPICH/S-CPICH power used for CQI measurement.

Working scope UTRAN Cell

Value range (-6..13)dB step 0.5 dB

Default value 6

Page 48: 67866411 ZTE UMTS Power Control New

Technical Description

• R99 Power Control

• HSDPA Power Control

• HSUPA Power Control

Page 49: 67866411 ZTE UMTS Power Control New

HSUPA Power Control

• Uplink E-DPCCH/DPCCH Power Offset

• Uplink E-DPDCH/DPCCH Power Offset

• Downlink E-AGCH/RGCH/HICH Power

• HSUPA Uplink Outer Loop Power Control

Page 50: 67866411 ZTE UMTS Power Control New

Uplink E-DPCCH/DPCCH Power Offset

The uplink E-DPCCH open loop power control of HSUPA is realized by setting a reasonable E-DPCCH power offset relative to that of DPCCH.

According to 25.214 standard, the gain factor ec of E-DPCCH is calculated using the following formula in non-compressed mode:

Where, βc is the gain factor of uplink dedicated control physical channel of R99. Aec is obtained from E-DPCCH power offset (∆E-DPCCH) that is configured at high level and then mapped in the right table .

Signalled values for E-DPCCH

Quantized amplitude ratios Aec =ec/c

8 30/15

7 24/15

6 19/15

5 15/15

4 12/15

3 9/15

2 8/15

1 6/15

0 5/15

eccec A

Page 51: 67866411 ZTE UMTS Power Control New

Uplink E-DPDCH/DPCCH Power Offset

The 3GPP specifies that RNC notifies UE and NodeB of a group of reference E-TFC and the corresponding E-DPDCH power offset relative to DPCCH, to be used by UE and NodeB to calculate the power needed by other non-reference E-TFC.

βed,ref is the reference gain factor of the reference E-TFC, and for each reference E-TFC, the βed,ref can be calculated using the following formula:

edcrefed A ,

Where, βc is the gain factor of uplink dedicated control physical channel of R99. Aed is obtained from E-DPCCH power offset (∆E-DPCCH) that is configured at high level and then mapped in the right table .

Signalled values for∆E-DPDCH

Quantified amplitude ratiosAed

29 168/15

28 150/15

27 134/15

….. ……1 6/15

0 5/15

Reference E-TFC and βed,ref

Page 52: 67866411 ZTE UMTS Power Control New

βed

The gain factor of E-DPDCH is defined as βed, which can be of a different value for each E-TFC and HARQ offset.

20, ,, , ,

, ,

10harq

e ref e jed j harq ed ref

e j e ref

L KL K

Where, Le,ref : the number of E-DPDCHs used by reference E-TFC. Le,j : the number of E-DPDCHs used by the number jth E-TFC. Ke,ref : the number of data bits of reference E-TFC. Ke,j : the number of data bits of the number jth E-TFC. ∆harq: HARQ power offset (EdchHarqPOFdd);

For the number jth E-TFC, the gain factor βed,j,harq of the related E-DPDCH can be calculated using the following formula :

Uplink E-DPDCH/DPCCH Power Offset

Page 53: 67866411 ZTE UMTS Power Control New

For E-AGCH, E-RGCH and E-HICH, the power is in the form of power offset.

E-AGCH power offset (EagchPOTti2 or EagchPOTti10, depending on different TTIs)E-RGCH power offset (ErgchPOTti2 or ErgchPOTti10, depending on different TTIs) E-HICH power offset (EhichPOTti2 or EhichPOTti10, depending on different TTIs)

When F-DPCH is configured, the power offset is relative to F-DPCH TPC domain. When F-DPCH is configured, the power offset is relative to F-DPCH TPC domain.

Update: The configuration of the power offsets in OMCR are related with different services. When the control plane detects changes (establishment, addition, deletion and modification) in the sub-services carried by DPCH, the new power offset is obtained from the database according to the number of sub-service and then configured again. When TTIs change, the power offsets are configured again. In the macro diversity status, the power offset is updated. For a multi-link case, E-AGCH power offset takes the value of E-AGCH Power Offset + Macro Diversity Gain.

Downlink E-AGCH/RGCH/HICH Power

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HSUPA Uplink Outer Loop Power Control

Reflect service quality: HARQ failure Number of HARQ Retransmission (NHR) In fact, when HARQ failure happen, it can be converted to a certain NHR according to the maximum retransmission :NHR = CorrNumHarqToNhr * MaxRetransEdch ;Where, CorrNumHarqToNhr is correction coefficient for converting HARQ failure to NHR; MaxRetransEdch is the maximum number of retransmissions for E-DCH.

To better reflect the channel quality, the average NHR value during a statistical period is usually taken as the basis for decision. The average NHR during a statistical period is defined as:

1

Re /I

ii

Num TransDiffAve NHR I

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Update method:

i) If NumReTransDiffAve > NhrThrUp, increase SIRtarget by one adjustment step;

ii) If NumReTransDiffAve < NhrThrUp, decrease SIRtarget by one adjustment step.

HSUPA Uplink Outer Loop Power Control

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SIRtarget adjustment in the case of concurrent services:

i) SIRtarget is increased as long as one service triggers it to be increased.

ii) SIRtarget is not decreased unless all services with valid NHR statistics indicate to decrease SIRtarget. Services with invalid NHR statistics are excluded from the combination of power control.

iii) Some services need to decrease SIRtarget while some others need SIRtarget to remain the same, In this way, SIRtarget is not adjusted to guarantee QoS of all services.

HSUPA Uplink Outer Loop Power Control

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As the outer loop power control event algorithm of E-DCH introduced, it may affect the current outer loop power control algorithm in some cases. In this case, a final decision described in right table should be made by RNC.

HSUPA Uplink Outer Loop Power Control

In the right table:↑ indicates increase, ↓ for decrease, - for no adjustment (remain unchanged), × for invalid NHR statistics.

Coupling implementation of HSUPA and R99 outer loop power control

E-DCH DCH State Combination Result

↑ ↑ 1 ↑

↑ ↓ 2 ↑

↓ ↑ 3 ↑

↑ - 4 ↑

- ↑ 5 ↑

↓ - 6 -

- ↓ 7 -

- - 8 -

↓ ↓ 9 ↓

↑ × 10 ↑

↓ × 11 ↓

× ↑ 12 ↑

× ↓ 13 ↓

- × 14 -

× - 15 -

× × 16 × (invalid NHR statistics, no adjustment)

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EdpcchPOTti2

Parameter name

Quantified E-DPCCH/DPCCH Power Offset ( 2ms TTI )

Abbreviated name

EdpcchPOTti2

3GPP name E-DPCCH/DPCCH power offset; E-DPCCH Power Offset

3GPP reference TS 25.331 25.423 25.433

Description This parameter indicates the quantified E-DPCCH/DPCCH power offset configured to 2ms E-DCH transmission time interval.

Working scope RNC

Value range 0..8

Default value 6

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EdpcchPOTti10

Parameter name

Quantified E-DPCCH/DPCCH Power Offset (10ms TTI)

Abbreviated name

EdpcchPOTti10

3GPP name E-DPCCH/DPCCH power offset; E-DPCCH Power Offset

3GPP reference TS 25.331 25.423 25.433

Description This parameter indicates the quantified E-DPCCH/DPCCH power offset configured to 10ms E-DCH transmission time interval.

Working scope RNC

Value range 0..8

Default value 3

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ScheInfoPOTti2

Parameter name

Power Offset for Scheduling Info (2ms TTI)

Abbreviated name

ScheInfoPOTti2

3GPP name E-DCH Power Offset for Scheduling Info; Power Offset for Scheduling Info

3GPP reference TS 25.331 25.433

Description This parameter indicates the power offset for scheduling information configured to 2ms E-TTI. When no MACd PDUs are included in the same MACe PDU, UE will use power offset for scheduling information as HARQ power offset to compute the transmission power of E-DPDCH.

Working scope RNC

Value range 0..6

Default value 6

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ScheInfoPOTti10

Parameter name

Power Offset for Scheduling Info (10ms TTI)

Abbreviated name

ScheInfoPOTti10

3GPP name E-DCH Power Offset for Scheduling Info; Power Offset for Scheduling Info

3GPP reference TS 25.331 25.433

Description This parameter indicates the power offset for scheduling information configured to 10ms E-TTI. When no MACd PDUs are included in the same MACe PDU, UE will use power offset for scheduling information as HARQ power offset to compute the transmission power of E-DPDCH.

Working scope RNC

Value range 0..6

Default value 6

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EagchPOTti2

Parameter name

E-AGCH Power Offset for TTI 2ms

Abbreviated name

EagchPOTti2

3GPP name E-AGCH Power Offset

3GPP reference TS 25.423 25.433

Description This parameter indicates the power offset relative to DL DPCH pilot domain configured for E-AGCH in 2ms E-TTI.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (-32 .. +31.75)dB step 0.25 dB

Default value -2dB

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EagchPOTti10

Parameter name

E-AGCH Power Offset for TTI 10ms

Abbreviated name

EagchPOTti10

3GPP name E-AGCH Power Offset

3GPP reference TS 25.423 25.433

Description This parameter indicates the power offset relative to DL DPCH pilot domain configured for E-AGCH in 10ms E-TTI.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (-32 .. +31.75)dB step 0.25 dB

Default value -9dB

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ErgchPOTti2

Parameter name

E-RGCH Power Offset for TTI 2ms

Abbreviated name

ErgchPOTti2

3GPP name E-RGCH Power Offset

3GPP reference TS 25.423 25.433

Description This parameter indicates the power offset relative to DL DPCH pilot domain configured for E-RGCH in 2ms E-TTI.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (-32 .. +31.75)dB step 0.25 dB

Default value -3dB

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ErgchPOTti10

Parameter name

E-RGCH Power Offset for TTI 10ms

Abbreviated name

ErgchPOTti10

3GPP name E-RGCH Power Offset

3GPP reference TS 25.423 25.433

Description This parameter indicates the power offset relative to DL DPCH pilot domain configured for E-RGCH in 10ms E-TTI.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (-32 .. +31.75)dB step 0.25 dB

Default value -9dB

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EhichPOTti2

Parameter name

E-HICH Power Offset for TTI 2ms

Abbreviated name

EhichPOTti2

3GPP name E-HICH Power Offset

3GPP reference TS 25.423 25.433

Description This parameter indicates the power offset relative to DL DPCH pilot domain configured for E-HICH in 2ms E-TTI.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (-32 .. +31.75)dB step 0.25 dB

Default value -3dB

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EhichPOTti10

Parameter name

E-HICH Power Offset for TTI 10ms

Abbreviated name

EhichPOTti10

3GPP name E-HICH Power Offset

3GPP reference TS 25.423 25.433

Description This parameter indicates the power offset relative to DL DPCH pilot domain configured for E-HICH in 10ms E-TTI.

Working scope UTRAN Cell, Service and Diversity Mode Related

Value range (-32 .. +31.75)dB step 0.25 dB

Default value -9dB

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NhrThrUp

Parameter name

NHR Threshold to Adjust SIR Target Upward

Abbreviated name

NhrThrUp

3GPP name —

3GPP reference —

Description This parameter indicates the number of HARQ retransmission (NHR) threshold to increase SIR target. When the NHR exceeds the threshold, RNC shall increase the SIR target. It is only applicable for the services carried on E-DCH.

Working scope Service Related

Value range (0..15) step 0.01

Default value 10ms E-TTI 0.03 2ms E-TTI 0.3

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NhrThrDown

Parameter name

NHR Threshold to Adjust SIR Target Downward

Abbreviated name

NhrThrDown

3GPP name —

3GPP reference —

Description This parameter indicates the number of HARQ retransmission (NHR) threshold to decrease SIR target. When the NHR is less than the threshold, RNC shall decrease the SIR target. It is only applicable for the services carried on E-DCH.

Working scope Service Related

Value range (0..15) step 0.01

Default value 10ms E-TTI 0.01 2ms E-TTI 0.1

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