Feature adaptive configuration of traffic channel power offset for hsupa performance report

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Adaptive Configuration of Traffic Channel Power offset for HSUPA

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 2

Executive Summary

• The feature have been activated successfully on 16 September 2014 around 23:00 in RNC_TTCHMUHAMMAD1.

Feature Gain

-User are served in HSPA service rather than PS R99 service. PS R99 DL and UL payload reduced 7.1% and 11.5%

respectively but the HSDPA and HSUPA payload increased 14.6% and 16.9% respectively.

-Average RNC Mean RTWP improve about 2dB.

-Average PS and HSPA Throughput improved.

Feature Drawback

- Accessibility slightly degraded after the feature activation due to transmission packet which already exist before

the feature activation , please see the attached analysis report in coming slide for details explanation.


BackgroundWith the increasing use of HSPA/HSPA+, the downlink peak data rate increases. The uplink performance needs to be improved accordingly. According to the changes in UE behavior and network status, this feature dynamically configures the optimum power control parameters for the uplink data channel of a UE, thereby increasing HSUPA capacity. This feature only applies to HSUPA 10 ms BE services.

SolutionThe offset of E-DPDCH power relative to DPCCH RX power is one of the major factors that determine the DPCCH RX power. A UE in low-rate little retransmission staterequires less DPCCH RX power than it does in high-rate little retransmission state.

Adaptive Configuration of Traffic Channel Power offset for HSUPA(R14 & R15)

DPCCH RX power in the small and large retransmission states with this featureDPCCH RX power in the small and large retransmission states without this feature


Traffic & Payload

PS payload reduced while the HSPA payload increase. The feature improve the HSUPA user throughput.


Traffic & Payload

No significant change in voice traffic(right most picture) PS DL and UL Payload reduce 7.1%(18.5GB) and 11.5%(175GB) respectively but the HSDPA and HSUPA payload increase 14.6%(4098GB)

and 18.9%(653GB) and 5 days pre post comparison.

0.88%

14.6% (4098GB)

-7.1% (18.5GB)

16.9% (653GB)

-11.5% (175.8GB)


RTWP Measurement

Average RTWP of the RNC improved around 2db after the feature activation. Improvement in RTWP could lead to improve in HSDPA and HSUPA throughput.


Throughput

Average PS and HSPA throughput improved. More significant improvement observed in HSUPA

throughput.


Accessibility degraded after the feature activation due to transmission packet loss, please see attached analysis report for details explanation.

Accessibility


Retainability

Mobility remain the same trending.


Mobility

Mobility show no significant changes

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The information contained in this document is for reference purpose only, and is subject to

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Feature adaptive configuration of traffic channel power offset for hsupa performance report