Li Yu

Radio Access Network Engineer | 5G/LTE RAN | O-RAN (RU/DU/CU) | Protocol Stack (PHY/MAC/RLC/PDCP) | Product Validation & Troubleshooting | Verizon | Samsung | Nokia

Greater Boston

About

30 years extensive technical expertise with proficient at analysis and problem solving for optimization, planning and design. Dedicated to delivering sustained results in a fast-paced high-pressure environment. 5G NR/4G LTE/mMIMO/VoLTE/UMTS/EVDO/CDMA | XCAL/XCAP/QXDM/EDAT List of Core Competences: • Strong knowledge in 4G/5G cellular protocol stack and network architecture specifically focused on Radio Access Network • Experience with Data, VoLTE , VoNR, IoT, RedCap, 5G Industrial devices and Location Service end-to-end testing, including functionalities, signal quality and performance integrity • Excellent on log analysis and troubleshooting common technical setup issues • Solid experiences on analysis of network KPI’s, troubleshoot issues and day-to-day performance management/optimization functions for the RAN Network • Parameter audits against the standards & remove inconsistency across the network, data-fill parameters, pre/post analysis, and in-depth performance reports • Experience in EMS systems, managing network elements, parameter changes and fault management • Hands-on test tools including protocol analyzers, XCAL/XCAP/QXDM/EDAT, Wireshark, Keysight 5G Test Simulation, Spectrum Analyzers, Signal Generators, etc.

Experience

  • Wireless Network Engineer/Tester at Verizon
    Aug 2023 - Present · 2 yrs 11 mos

  • Performance and Optimisation Specialist at Nokia
    Feb 2017 - Aug 2023 · 6 yrs 7 mos

    RF optimization of 5G NR/LTE/mMIMO RAN network.

  • RF Performance Engineer at Samsung Electronics America
    Dec 2020 - Jul 2023 · 2 yrs 8 mos

  • Alcatel-Lucent Enterprise (United States)
    • Radio Frequency Optimization Engineer
      Jan 2009 - Jan 2017 · 8 yrs 1 mo

      RF Optimization for LTE/UMTS RAN

    • Senior Radio Frequency Optimization Engineer
      Jan 2009 - Jan 2017 · 8 yrs 1 mo

      RF optimization of LTE/UMTS RAN

  • Customer Technical Advocate at Lucent Technologies
    Jan 2000 - Dec 2008 · 9 yrs

    RF optimization of 1xEV-DO, CDMA RAN