Project Manager Rf Engineer

Jack Lui

PROFESSIONAL EXPERIENCE:

Ericsson July 2009 to Present

Senior 5G/LTE RF Opto Engineer

• LTE/5G optimization process development, RF Drive Test using Google Earth KML, TEMS, Python, Define Golden Cluster and Drive Route planning, Drive Test project management and planning, Drive Test Data XCAL/ACTIX/TEMS post-processing, analysis and trouble shooting. Pull data from OneData, Ericsson OSS/ENM, and Nokia OSS platform to check cell operational call attempts, Volte Erlangs, and Data usage. Review operational data and optimize the system for best performance. Using Ondata platform to review daily, weekly, and monthly KPI’s. 5G/LTE system optimization using data from OneData, Truecall, ActixOne. Using ActixOne to analyze drive test data and making system optimization decisions. Proficient with TEMS Investigation, TEMS Discovery, XCAL, and Actix.

• Site Golden parameters auditing. Site provisioning, activation, and integration. Extensive Ericsson/Nokia 5G/LTE optimization experiences. delivery, commissioning and optimization process and acceptance to ensure contract completion. Single site acceptance, cluster acceptance, optimization, and parameter adjustment to pass KPI exit criteria. Close out package delivery to complete the project to ensure accounting payment. Using MapInfo and SQL scrip to compare different RF design on pop coverage and quality of coverage.

• Multi-band LTE traffic load balancing, KPI’s monitoring and RF tuning to optimize LTE performance, traffic flow adjustment with static and mobile multiple band parameter settings on trigger value and hysteresis to reach ideal traffic distribution. RF RET tilt adjustment to optimizing CDR/CFR and traffic balancing among multiple bands.

• RF drive test and post data processing with TEMS pocket and Nemo Windcather. LTE/VoLTE optimization to improve RRC Connection Failure Rate, Data ERAB Drop Rate, DL/UL Throughput, Intra-ENB HO Failures, Inter-eNB HO failures, Total Handover Failures, VoLTE ERAB Drop Rate, and VoLTE Packet Lost Ratio. Monte Carlo simulation to meet coverage and capacity requirements.

• 5G RF design using ASSET/Atoll, MapInfo, SQL & Python Scrip, Google Earth, Mapinfo, iBWave, Monte Carlo simulation to design for coverage, capacity, mixed use of LTE/5G, Carrier Aggregation, CPE, and mmWave. Simulation of 5G systems with Web, Video, AR/VR, and CPE mixed use and system capacity and coverage. Using iBWave to add 5G mmWave and small cell radio to indoor and stadium coverage and capacity. RF capacity and noise reduction using High- Capacity Lens Antenna.

• Multiband LTE traffic distribution, configuration, provisioning and parameter settings and optimization.

• System Parameter Optimization; Handover Parameter adjustments; Neighbor List verification and modifications; Antenna adjustment based on drive test results.

• LTE Data Provisioning/Translations/RF shaping; Single Site Verification; Cluster Optimization; Pilot Strength Pollution Control; Signal Coverage Analysis

• Multi-band RET antennas with 4TX 4RX LTE and remote radio head to improve LTE/VoLTE performance and capacity. Innovative solutions for in-shelter or on tower to fit available tower load and space while reducing rental cost.

• Small cell and DAS deployment for capacity and coverage solutions.

• Validate RF design, BOM and diagram to ensure wiring connection, BOM, antenna types are implementable and meeting full quality requirements.

• LTE Acceptance test and closeout package

• Top Expert on LTE system RF implementation with Ericsson and Nokia LTE and sharing coax cable with multiplexer.

• Working with real estate team to create search ring and site acquisition. RF drive test data analysis and KPI optimization.

• LTE parameter optimization for high traffic sites and sites with high noise level.

• Full Vendor GoNGo LTE system acceptance test to meet targeted system performance. Manager vendor optimization effort to fine tune RF and system parameters to reach KPI targets.

• Balancing LTE, UMTS and GSM traffic on all frequency bands to optimize KPI on voice and data.

• Monitoring daily SAM, NPO, WPS, and Quantum to proactively looking for LTE and UMTS KPI trend to meet corporate CQI targets on voice and data. Generating “Before” and “After” reports to present network optimization effort to improve system performance.

• LTE and UMTS performance monitoring, traffic balancing, and RF and parameters optimization to achieve KPI targets and eliminate chronicle worst offenders.

• Spectrum harvesting to deploy 2nd LTE carriers. Setting system parameters to direct voice or data traffic to different bands to maximize system coverage, capacity and best KPI. AT&T July 2000 to June 2009

Senior RF Engineer.

• UMTS & GSM System RF Design and Optimization based on operational data and drive test data. Successfully optimized large scale systems such as Chicago, BAWA, and Dallas markets. Auditing daily operational data for failed network entry, handoff, missing neighbors, low sustainability or poor data throughput and customer complaints. Sorting data to identify “Worst Offender” to prioritize the areas for optimization. Analyze problem area for related optimization solution. Expert on Wireless Data system optimization based on drive test data and data post processing using Windcatcher, XCAP and Agilent RF test tools. Using RF design software to verify optimization strategy on azimuth, tilt or frequency changes. Using Atoll, Capesso and Planet EV to optimize frequency planning, PN, preamble, antenna down tilt and azimuth settings. Generating “Before” and “After” plots and known customer location signal enhancement to get buy-in from upper management for system optimization. Monitor system performance to validate KPI improvements.

• GSM & UMTS RF system design using Atoll, Planet EV 5, and GIS data. Design parameter settings and adjustment. RF link budget, Interference Margin and Fade Margin settings. Site Search ring and final site approval. System throughput, RF coverage and capacity planning. RF Model tuning using drive test data. Model tuning using Wavesight, CRC or NewField methods based on RF environments. Antenna selection, azimuth, and down tilt configuration. Site development and antenna system engineering to achieve desired coverage and capacity targets in a given market. RF design based on coverage and capacity. Traffic spreading using demographic data. Monte- Carlo simulation using Planet Tool. Site selection and planning based on financial budget and marketing requirements.

• Served as UMTS RF deployment project manager to lead market deployment effort. Weekly project management to meet targets and milestones. We effectively used weekly project “color code” and Action Item List to manage the project and communicate the progress to all team members and upper management. Coordinate and enforce project plan with all project stake holders and vendors. Serve as project “point of contact” to keep project flow, delegate job assignment, manage and enforce deliverables and meet project milestones and final target. EDUCATION:

• MS in Electrical Engineering, Univ. of Arizona

• BS in Electrical Eng., Univ of Science and Technology. US Citizen

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