Gopi krishna Kobbera
●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.
Samsung Electronics, San Diego, CA
Modem Test Engineer
Mar 2018 – Present
●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.
●Technologies: LTE, WCDMA, GSM
●Test Simulators: R&S CMW 500, ANITE 9000, Anritsu MD8430A
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.
Master of Science in Information Technology Jan 2016 -May 2017
Trine University, IN