Gopi krishna Kobbera

addahr@r.postjobfree.com +1-304-***-****

Summary

●Experience in Carrier Certification of modems on various network operators.

●Experience in Protocol Conformance testing, sanity and regression field testing.

●Experience Working on LTE Network Simulators such as Keysight technologies, R&S CMW500 and Anritsu.

●Experience in carrying out Carrier Acceptance (ATT, TMO) & Conformance testing in lab using different network Simulators.

●Good knowledge of LTE Attach, LTE Handover, VoLTE, CSFB Procedures, SRVCC, E 911 & Carrier Aggregation.

●Hands on Experience with Keysight-SAS Sequencer, R&S- Project explorer, context. Anritsu- RTD, UCM.

●Maintain daily issue reports and check periodically with developers until issue is resolved

●Reporting daily debug Requests by mentioning failure reasons from TE logs well as from UE logs.

●Calibrate and update NV items on device settings depending on the requirements of test cases & collect and capturing the logs.

●Experience working with log capturing and Analysing tool such as Shannon Diagnostic Monitoring Tool.

●Experience in programming in Python.

Work Experience

Samsung Electronics, San Diego, CA

Modem Test Engineer

Mar 2018 – Present

Responsibilities:

●Performed automated test cases using Key Sight Equipment for various test plans

mentioned in the Network Operators LTE UE Compliance documents.

●Performed Carrier Acceptance testing using simulators such as ANITE, R&S, & Anritsu On Samsung Exynos chipset.

●Ensured latest release of AT&T Carrier Acceptance Scripts (CAS) & T-Mobile Acceptance Scripts (TAS) From Key Sight Technologies.

●Performed AT&T 10776 & T-Mobile Q3 Certification Testing Plan, such as LTE MM Procedures, LTE RRC, Network selection, LTE Inter & Intra-RAT mobility, CSFB, ENS, VOLTE/IMS and many other test types.

●Experts in performing and troubleshooting issues for both Stationary, Mobility, and Field

testing for devices features and reports defects back to developers.

●Performed device calibrations and update builds on issue basis and continue testing

●Analysed and reported issue/failure logs using chipset diagnostic tool, report them to development team and follow up on it till issue is resolved.

●Communicate with the test equipment suppliers and make modifications to the test script as and when required to solve customer issues in the lab.

●Performance analysis of Samsung Exynos Modems on live networks on field.

●Performed Basic Sanity, Regression Testing and KPI for call connectivity and data throughput, VoLTE Call, Video Calling, Wi-Fi Calling, E 911 Calling for the binary released on daily basis & LTE Builds of the various mobile Devices with latest Android Operating System.

●Implemented procedures for verification testing and validation of AP & modem binary Systems.

●Tested Pre-Launched devices and reported protocol Issues, software issues and crashes.

●Worked with SW developers and Analysers to find out the root cause of issue by doing testing with various binaries and test builds.

Technical Skills

●Technologies: LTE, WCDMA, GSM

●Test Simulators: R&S CMW 500, ANITE 9000, Anritsu MD8430A

●Tools:

Diagnostic tools: Shannon DM

Calibration tools: MTM terminal and SGT Tool

Test Equipment tools: Keysight-SAS Sequencer, R&S- Project explorer, context. Anritsu- RTD, UCM.

●Programming Languages: Python, C.

Education

Master of Science in Information Technology Jan 2016 -May 2017

Trine University, IN

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