RNC Pilot PO Optimization

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

RNC Pilot PO Optimization

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

Performance Summary

• Accessibility improved due to DL power congestion reduction

• Retainability maintained.

• TCP non HS power decrease around 11.54% even R99 payload increase around 3%

• Number of DL power rejection decreased 94%, number of LDR action due to DL power decreased 80%

• ISHO & SHO keep maintain, while IFHO performance improved after pilot PO optimization

• HSDPA & PS throughput keep maintain

• Traffic & payload keep maintain

Script:

Activate:

SET UCORRMALGOSWITCH:PCSWITCH=PC_PILOT_PO_OPTI_SWITCH-1;

Fall Back:

SET UCORRMALGOSWITCH:PCSWITCH=PC_PILOT_PO_OPTI_SWITCH-0;


Pilot PO OptimizationTechnical principles: The DL dedicated physical channel (DL DPCH) is divided into the dedicated physical data channel (DPDCH) and the dedicated physical

control channel (DPCCH). The power offsets (POs) of pilot domain are independently configured on the DPCCH and can be optimized. The default transmit power of the current DL DPCH pilot domain is set to 3 dB based on the transmit power of the data domain. For a low-rate DL DPCH, such value is a bit high. Especially when no data is transmitted on the DL DPCH of HSDPA UEs, a high Pilot

PO will result in transmit power waste. We can optimized to 1db to reduce the power consumption;

Script:ActivateSET UFRC: PilotPo=4;

Fall Back:SET UFRC: PilotPo=12;

Data1

TPC TFCI

Data2

Pilot

Timeslot (0.667 ms)

PO1PO2 PO3

DL DPCH structure:

DPCCH

DPDCH


Accessibility

Accessibility performance slightly improved after pilot PO optimization activation


Retainability

Retainability performance keep maintain after pilot PO optimization activation


Mobility

SHO & ISHO keep maintain IFHO performance improved after activation pilot

PO optimization


Throughput

PS Throughput keep maintain HSDPA & HSUPA throughput keep maintain after

Pilot PO optimization activation


Traffic & Payload

CS traffic keep maintain PS & HS payload keep maintain


Accessibility & Retainability Performance

Accessibility performance improved while retainability performance keep maintain


Mean TCP non HS vs PS Payload

Mean TCP non HS power decrease around 11.54 % with PS payload increment around 3% (Comparing 3 days before and 3 days after)+ 3% + 2% + 5%

+ 12.25% + 12.21% + 10.16% + 11.54%


Number of LDR Action due to DL Power & DL Power Congestion

~80% Less

~94% Less

• 59% less LDR action due to DL power congestion

• It shown number of occurrence DL power reach LDR threshold become less after DPCH Pilot power adjustment

* Data before: 15,16,17 Aug 2014, After: 22 ,23,24 Aug 2014

94% DL power rejection less than before activation DPCH pilot power adjustment.

* Data before: 15,16,17 Aug 2014, After: 22,23,24 Aug 2014


Throughput & Payload Comparison

~97% Less

HSDPA payload increased 1.3 % (3 days before compare with 3 days after)

HSDPA throughput & HSDPA payload shown improvement on August 22nd, 2014

- 4%+ 7% +1.7%

Thank youwww.huawei.com

Copyright©2011 Huawei Technologies Co., Ltd. All Rights Reserved. The information contained in this document is for reference purpose only, and is subject to change or withdrawal according to specific customer requirements and conditions.

RNC Pilot PO Optimization

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