Edge throughput enhancement
- 1. EDGE THROUGHPUT ENHANCEMENT WORKING Security Level 2018-11-06 Huawei Proprietary- Restricted Distribution Page1,Total8 EDGE THROUGHPUT ENHANCEMENT WORKING
- 2. EDGE THROUGHPUT ENHANCEMENT WORKING Security Level 2018-11-06 Huawei Proprietary- Restricted Distribution Page2,Total8 Contents 1 Objective.................................................................................................................. 3 2 Description & Related Parameters.............................................................................. 3 3 Benefits.................................................................................................................... 5 4 Dependency.............................................................................................................. 5 5 Testing Methodology.................................................................................................6 6 Results...................................................................................................................... 6
- 3. EDGE THROUGHPUT ENHANCEMENT WORKING Security Level 2018-11-06 Huawei Proprietary- Restricted Distribution Page3,Total8 1 Objective Customer raised concerned that the EDGE throughput be increased as UMTS coverage not uniform and user complaintwere locked when they experienced lowthroughput compared to their 3G experience. Major task was to enhance the user perception & related KPIs. Multipletrials and parametric tuningwas done step by step for enhancement. Trial on XX City, were most of the complaints and KPIs low. 2 Description & Related Parameters Below mentioned steps were taken to improve the PS related KPI’s and also parameters to counter any degradation incurred on CS related KPIs.
- 4. EDGE THROUGHPUT ENHANCEMENT WORKING Security Level 2018-11-06 Huawei Proprietary- Restricted Distribution Page4,Total8 Activity Description PD Alignment Defined PDCH and dynamic PDCHs on BCCH and DCS TRX with following Dynamic PDCH on next TS of TRX 1. To enhance multi-TS usage increasing Throughput per user. Support High Multislot Class High Multi-slot class function enables a single MS to be allocated with a maximum of five timeslots on the uplink or downlink, thus improving the uplink or downlink throughput ofa single MS. (max 5TS DL per User) Timer of Releasing Abis TS Interval between detection of the secondary links being in idle state and releasing of the secondary links. After all the TBFs on the channel are released, the BSC starts the timer when channels are idle instead of immediately releases secondary links. Value changed from 15 to 5 by shortening value TBF must apply for secondary links based on the actual condition when adjusting the coding scheme. PDCH DL Multiplex Threshold PDCHDWNLEV 60 -> 160, more the established TBFs and connected MSs.Enhancing Access ratio PD Max Ratio Threshold For high PDCH congestion cells value changed to 75, more dynamic conversion threshold draw back will increase DCR. PS DCS Traffic Shifting concentric cell traffic on to DCS cells. OtoU: -92-->-95 UtoO: -81-->-85 Also increasing Half rate thresholds via AMRTCHHPRIORLOAD TCHBUSYTHRES TCHTRICBUSYOVERLAYTHR TCHTRIBUSYUNDERLAYTHR
- 5. EDGE THROUGHPUT ENHANCEMENT WORKING Security Level 2018-11-06 Huawei Proprietary- Restricted Distribution Page5,Total8 Support EDA & Unused Idle TS Idle TS Count – For Flex Abis idle TS set to 0 for dynamic allocation and enabling TCHH Function Switch Low Lev Sub Res Preempt Flag PCU Support PREEMPT_ABIS_LINK Message EDA enables the MS to be allocated with more timeslots on the uplink. This improves the uplink service rate. PS DTX & NACC Enable Enhanced DTX – Reduce power consumption and RxQual ; Enable NACCSPT -The NACC enables the network to notify the MS of the system information about the neighboring cell in advance.This increases the PS service access speed and shortens the PS service interruption duration during cell reselection 3 Benefits Improved Accessibility and Throughput for selected city. 4 Dependency Need to check BSC licenses for the related parameters; This working was applied on highly congested and highly utilized PS traffic area.
- 6. EDGE THROUGHPUT ENHANCEMENT WORKING Security Level 2018-11-06 Huawei Proprietary- Restricted Distribution Page6,Total8 5 Testing Methodology OSS KPIs and customer complaint tracker 6 Results LLC DL-Edge User Throughput has improved 15%: from 106 kbps to 122 kbps. DL Edge Throughput per cell has improved 8% from 159kbps to 172kbps DL Rx Quality(0-3) has significantly improved from 90% to 92 %, (better than before trial) PDCH Application Failures (due to PD Threshold) are Significant reduced by 96%; PBGT HO share: improved from 73% to 75.5% HSR Improved from 97 % to 97.85%;
- 7. EDGE THROUGHPUT ENHANCEMENT WORKING Security Level 2018-11-06 Huawei Proprietary- Restricted Distribution Page7,Total8
- 8. EDGE THROUGHPUT ENHANCEMENT WORKING Security Level 2018-11-06 Huawei Proprietary- Restricted Distribution Page8,Total8