Jul 2009 – Apr 2012 · 2 yrs 9 mos

• Senior most member of team that delivered two high volume products, Bold 9780 and Curve 9360, to carriers worldwide.
• Software development for final product and for RF factory calibration.
• Log analysis and resolution of broad range of issues reported for phone, resulting from 3GPP GCF Certification, Network vendor and carrier IOT, Field (Live network), Beta, Stress, Reliability and Performance testing.
• o Spanning across Idle mode (PLMN scans, Reselections, Cell broadcast), Voice, Data (streaming, email, browsing, tethered modem, MMS), Measurements and Handovers between cellular technologies and UMA/GAN, Femto cells, AGPS, Memory corruption and Data aborts
• o UMTS, HSPA, GSM, GPRS, Wi-Fi 802.11 and UMA/GAN technologies and NAS, RRC, RLC, MAC, L1, RRLP, SUPL and TCP/IP layers of protocol stack and Radio Interface Layer (RIL).

Mar 2008 – Jun 2009 · 1 yr 3 mos

• Designed and implemented clean interface between physical layer and upper layers of WCDMA protocol stack (RRC, MAC) for 3G data path, specifically, BCH, FACH, DCH, RACH data paths. Unit testing with RTXC simulation tool (STEP) and GNU debugger.
• Led integration testing effort for L1 team and delivered core CS and PS functionality in 1.5 months.

Nov 1999 – Mar 2008 · 8 yrs 4 mos

• UMTS RNC development team (Networks Business) and Network Simulator team - DSP test group (Mobile Devices Business).
• Drove test effort for new mobile platform in DSP test group: Assessed performance of each DSP build (in 3GPP TS 34.121 GCF conformance tests) by analyzing logs, providing initial triage, resulting in more than 90% of tests passing in 2.5 months.
• UMTS RRC Feature development (RNC and Network Simulator)
• o Idle-mode: Paging, Cell Selection and Reselection (Intra-frequency, Inter-frequency, Inter-RAT).
• o Connected mode: Voice, Packet, Video and Multi-RAB calls.
• o Mobility: Cell Update, Measurements, Handovers (Soft, Inter-frequency, Inter-RAT).
• o HSDPA, Compressed Mode, Tx diversity, Cell Broadcast, MBMS.