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Summarized by Local Optim

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How to Improve

ThroughputUMTS Nokia

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Throughput Formula Definition

FORMULA:

HSDPA cell average throughput (Kbps) =Sum(MAC_D_PDU_TOT-

MAC_D_PDU_DROP_BTS_OWFL)*336*500/1000/Sum(HS_SCCH_PWR_DIST_C

LASS_0+HS_SCCH_PWR_DIST_CLASS_1+HS_SCCH_PWR_DIST_CLASS_2+

HS_SCCH_PWR_DIST_CLASS_3+HS_SCCH_PWR_DIST_CLASS_4+HS_SCCH

_PWR_DIST_CLASS_5)

PS cell average throughput (Kbps) =

((Sum(8*DUR_PS_INTERA_8_UL_IN_SRNC+16*DUR_PS_INTERA_16_UL_IN_SRN

C+32*DUR_PS_INTERA_32_UL_IN_SRNC+64*DUR_PS_INTERA_64_UL_IN_SRNC+128*DUR_PS_INTERA_128_UL_IN_SRNC+256*DUR_PS_INTERA_256_UL_IN_SR

NC+320*DUR_PS_INTERA_320_UL_IN_SRNC+384*DUR_PS_INTERA_384_UL_IN_

SRNC+8*DUR_PS_BACKG_8_UL_IN_SRNC+16*DUR_PS_BACKG_16_UL_IN_SRN

C+32*DUR_PS_BACKG_32_UL_IN_SRNC+64*DUR_PS_BACKG_64_UL_IN_SRNC+

128*DUR_PS_BACKG_128_UL_IN_SRNC+256*DUR_PS_BACKG_256_UL_IN_SRN

C+320*DUR_PS_BACKG_320_UL_IN_SRNC+384*DUR_PS_BACKG_384_UL_IN_S

RNC)/100/1000000)+(Sum(8*DUR_PS_INTERA_8_DL_IN_SRNC+16*DUR_PS_INTE

RA_16_DL_IN_SRNC+32*DUR_PS_INTERA_32_DL_IN_SRNC+64*DUR_PS_INTER

A_64_DL_IN_SRNC+128*DUR_PS_INTERA_128_DL_IN_SRNC+256*DUR_PS_INTE

RA_256_DL_IN_SRNC+320*DUR_PS_INTERA_320_DL_IN_SRNC+384*DUR_PS_INTERA_384_DL_IN_SRNC+8*DUR_PS_BACKG_8_DL_IN_SRNC+16*DUR_PS_BACK

G_16_DL_IN_SRNC+32*DUR_PS_BACKG_32_DL_IN_SRNC+64*DUR_PS_BACKG_

64_DL_IN_SRNC+128*DUR_PS_BACKG_128_DL_IN_SRNC+256*DUR_PS_BACKG

_256_DL_IN_SRNC+320*DUR_PS_BACKG_320_DL_IN_SRNC+384*DUR_PS_BACK

G_384_DL_IN_SRNC)/100/1000000))*1000000/Sum(PERIOD_DURATION*60)

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Throughput Improvement

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Action

1. InvestigationHow to Improve HSDPA Throughput2. Troubleshooting

1. CQI Improvement by Ptx parameter adjustment

2. RNC Parameter setting for:

HSDPAPeakRateLimit become 0DLmaxBitRateSF16 become 1080

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Performance Throughput After ExecutionRNC Parameter HSDPAPeakRateLimit

CRF Implemented

HSDPA End User Throughput Increase by 28.63% from 2123,809 to 2731,991

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Performance Throughput After Execution (CQI Improvement)Ptx Parameter adjustment

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Performance Throughput After ExecutionDLmaxBitRateSF16Parameter (1080) adjustment

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Thank You