OBJECTIVE:

I have 10 years of professional experience in Analysis and Validation of Telecommunication products. Specialization in Confidential 4G/5G FDD and TDD eNodeB/Modem product verifications to exceed customer satisfaction

SUMMARY:

• Ramping up on 3GPP 4G Pro/5G specifications for 5G model and LAA/MultiFire/mmWave
• Working on NB - IOT Confidential modem product verification for 3GPP Release 13/14
• NB-IOT eNB simulators to verify Modem Features/Performance using Rohde & Schwarz eNB Simulator for NB-IOT, Keysight eNB simulator for NB-IOT
• Worked on Performance and Stability verification of Confidential Femto-ENodebs
• Worked on Confidential TDD EnodeB for system verification at Confidential
• Confidential 3Gpp Specs 136.211,136.212,136.213,136.321, Sound knowledge of end to end call in Confidential, eNodeB, FAPI eNodeB L1 (PHY Layer)-L2 (MAC Layer) interaction, RRC Messages
• Confidential eNodeB Protocol Testing (PHY, MAC, RRC)
• Confidential Data and VoLTE Call Setup on JDSU UE Simulator, Commercial Confidential Chipset UEs, AeroFlex TM500 UEs
• Networking Protocols: SNMP, TCP/IP, SFTP, SSH, DHCP, IPSec, VoIP, SIP
• Telecom Tools: QXDM, QPST, QCAT, JPerf Tool, Spectrum Analyzer, Confidential eNodeB Controlling Tool for L2 Scheduling
• Platforms: Solaris 9, Solaris 10, Red Hat Linux, Fedora 17, Windows (NT, XP)
• Scripting Languages: Python, Shell Script/AWK/SED, Perl, TCL, Expect
• Special Tools: Jperf Tool to verify data Throughput of Confidential UE, TCL Load Tool to simulate the EVDO Call Model, Ethereal, Wireshark, TCPDUMP, MIMIC Simulators, AdventNet MibBrowser(NMS), Ethereal, HP Measureware
• Developed several calculators for the verification of Confidential features, Confidential TDD/FDD Throughput calculator for all FDD and TDD Configurations
• Networking Protocols: IPSec IKE Tunnels, TCP/IP

WORK EXPERIENCE:

Confidential

Tech Lead

Responsibilities:

• Involved in customer issues verification and create the scenario in the LAB to verify the fixes.
• Developed sound understanding on NB-IOT specifications 3GPP Spec 13/14.
• Test planning and executions for Phy/MAC/RRC protocol and performance of Modem
• Modem Performance in different channel fadings: AWGN/EPA5/ETU/EVA at different SNR conditions
• Developed scripts for NB-IOT Modem protocol and performance verification using Perl/Python scripting.
• Dec 2015 - Dec 2016: Working with Confidential on Confidential Small Cell Femto Product. Responsible for test planning, test executions and log analysis for Confidential eNB. Writing call Model scripts using JDSU, AeroFlex TM500. Planning test scenarios for Deployment. Collecting KPI stats for eNB and providing the analysis.
• Developed a KPI analyzer tool for eNb using Perl and shell script
• Feb 2015 - Dec 2015: Working with Confidential as Tech Lead engineer on Confidential eNodeB Verification for Confidential eNodeB Product verification for Confidential Customer deliveries. Involved in execution of Feature verification, Soak and Capacity verifications, System Testing and Planning.
• Developed KPI analyzer tool to understand the eNB behavior is different Deployment scenarios
• RRC Feature Test Execution
• Multi ERAB Establishment on Dedicated Bearer
• Soak, Capacity Testing eNodeB Power measurements
• Throughput Verification for MUE scenarios
• Script development in Shell to automate MUE throughput testing for real CAT 4 UEs

Confidential

Consultant engineer

Responsibilities:

• Script development in Python for Confidential L1 feature verification and MAC Scheduling for TDD- Confidential
• Subject Matter expert for TDD- Confidential eNodeB L1-L2 verification in different scenarios
• Leading a team of 3 to 4 member for Confidential TDD Program for QA verification
• Handling Customer Releases, conducting training sessions for new joinees and to ramp up the team on new features
• Ramping up on Confidential -A features
• Test Planning and execution of Parameter testing using an in-build tool which will verify the L1 implementation and L2 messages as per Confidential 3GPP Spec.
• Development of Feature Test Plan: Sounding Reference Signal, CQI/PMI/RI for 5 MHz, 10MHz, 15Mhz, 20MHz for FDD and TDD both. Referring Specs: ETSI TS 136 211, ETSI TS 136 213 Release 8
• Developed a parser tool to process the captured messages between L1 (PHY Layer) and L2 (MAC Layer) of eNodeB for the verification of data transfer between L1 and L2 using Perl Scripting.
• Developed tool to convert DL RB Coding into Number of RBs and SRS SINR data.
• System Integration Testing of Confidential Layer 1 and Layer2/3
• Managing 64(Aerflex TM500 UEs)/16(Commercial UE) Call setup, involves developing tools to simulate data pump on 64/16 UEs
• Analyze the performance of the system
• Debugging of issues using FAPI Logs (Wireshark Logs) and UE side logs using QxDM or Aeroflex Logs, Spectrum Analyzer
• Reporting defects to design team using IBM Clear Quest, follow up on the reported issues by the team
• Developed Confidential Feature verification tool using wireshark and perl scripting
• Developed Excel Tool to calculate the Confidential 3GPP Spec calculations for SRS Configuration, DL RB Coding, calculation of the theoretical Confidential DL and UL throughput for CFI 1, 2, 3 for TDD and FDD both.
• Good understanding on Confidential Rel 8 3GPP Specs: ETSI TS 136 211, ETSI TS 136 213, 36.212, 36.321
• Involved in debugging of End to End call from UE to eNodeB to MME/sGW/PDN
• Test planning and execution of Confidential system level test cases for throughput verification in different channel conditions
• Script development in Python for Confidential L1 feature verification and MAC Scheduling for TDD- Confidential
• Leading a team of 4 members for Confidential TDD Program for QA Verification
• Writing Excel based calculator for Confidential TDD and FDD Throughput for CAT 3 UE, CAT 4 UE, RACH calculator, SRS Calculator, CQI Calculator, TDD HARQ Calculator based on Confidential Spec 36.211,36.213
• Writing Test Plan for Confidential TDD features for eNodeB L1 Verification
• Actively involved in conducting trainings/technical sessions with the team.
• Involved in ramping up the team on Confidential FDD and TDD
• Preparation of training material for the team
• Establish End to End Confidential call with real eAT (UE)
• Integration of eNodeB L1 (PHY Layer) with L2/L3 eNodeB Stack
• Understanding of eNodeB Layer1 and Layer 2 interactions (FAPI)
• Handling 64 UE Call Setup using Aeroflex TM500 Simulator
• Handling 16 Commercial UE Call Setup
• Development of test cases on different features
• Sounding Reference Signal (SRS) Feature Verification
• DMRS Group and Sequential Hopping verification
• CQI/PMI/RI Reporting Feature for different Transmission Modes
• Verification of data throughput at different MCS values for MIMO and Tx Diversity modes
• Multi eAT attach and data throughput verification for TM2, TM3, TM4 transmission modes for Frequency Band 7, 40.
• Developed a tool for the system to established PPPoE Connection and to run data throughput on 64 UEs using shell script, TCK/Expect
• Developed a tool to automate the system to run data throughput on 16 Commercial UEs using shell scripting, TCL/Expect
• Developed a multiple parser tool which will extract the required information from Wireshark logs and present it in the form of excel sheet for analyzing the behavior in different channel conditions.