This document discusses a feature called Adaptive Configuration of Traffic Channel Power offset for HSUPA that was activated on September 16, 2014. The feature dynamically configures power control parameters for the uplink data channel to increase HSUPA capacity. After activation, PS payload decreased by 7.1-11.5% but HSPA payload increased by 14.6-16.9%. Average RTWP and throughput also improved. However, accessibility was slightly degraded due to existing transmission packet loss.

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Adaptive Configuration of Traffic Channel Power offset for HSUPA

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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.

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Background
With 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.
Solution
The 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 state
requires 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

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Traffic & Payload
 PS payload reduced while the HSPA payload increase. The feature improve the HSUPA user throughput.

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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)

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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.

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

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

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Retainability
Mobility remain the same trending.

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Mobility
Mobility show no significant changes

11. Thank you
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