Han Seung Lee Email & Phone Number

Washington, Dc, Us

Electromagnetic & Sensor Systems

Edinburg, Virginia, Us

Proficient in NetAct and ALU SAMKPI monitoring and Optimization of Newly integrated LTE / CDMA sitesPredicting network coverage with MapInfo, AtollWireless Site Development in Central-Virginia regionCreate/complete RFDS, NST, CIQ forms to support new and existing site designs and upgrades.Carried out hunderds of walks/drive tests for pre-construction SINR verification, and perform macro site changes if needed Performed post on-air stability, and prep to hand-off for optimization work using NetActImplement and design the product configuration / scripting / integration work for RAN Nodes (eNB/BBU/RRH)Investigate RSSI/VSWR troubles, analyze root cause for alarms and hardware issues to achieve site performance stabilization.Using Rhode and Schwarz TSMA network scanner and spectrum analyzer to measure the network performance/assess RF interference.

Waynesboro, Va, Us

• Analyze, Ascertain the cause of UE failure on the Network from devices perspective. • Generate various RF performance reports (TRP, TIS etc) on each OEM models using R&S CMW500 solution. Compare in-depth details with CTIA reports.• Post process RF driving tests using TEMS and Windcather• Determine if iRAT issue is on the UE's carrier parameter settings or on the network. Daily analysis of QXDM and Wireshark logs (L2/L3). Ability to consult 3GPP & 3GPP2 standards for debugging issues.• Working knowledge of LTE, CDMA industry testing standards : CDMA2000, HRPD, eHRPD etc.• Work knowledge with eNB(ALU), S-GW, PGW(Cisco), MME, HSS in lab and production network• Setup/train complete framework of test scripts of UE for testers in lab.

CDMA LTE RF QA Engineer (leader of 6 member team)• Reduce software error percentile to acquire technical approval from clients (quarterly sale of $60M)• Coordinate projects and assign duties to other software engineers in the team.• Creating all the possible scenarios to stress each model’s software binary.• Creating, certain logical scripts using C+ for automation thatassist vast amount of repetitive tests.• Inspecting air logs through Qualcomm's supporting tools such as QXDM, QPST's file explorer, WireShark, ETS etc.• Calculation of power consumptions for different test scenarios.• Plan performance tests on CDMA/EVDO/LTE networks, optimize data throughput and assign call quality indicator on a particular area of home/ roaming network.• Utilize ADB(android debug bridge) for installing apps, copying filesand forwarding specific ports for emulators/android devices.

- Analyzing ESD effect on DSP amplifier (implemented for OEM radios in Nissan, Honda and Ford)• Computing residual noise in DSP amplifier with Flat EQ at 20dB.• Quality assurance and DV test for car audio 6 CD changer mechanisms.• Sound quality analysis of Neo Magnet speaker vs. Metal Frame speaker.• Created harnesses for car audio head unit installing and testing.• HD radio antenna testing on field.