Test Engineer Field Testing
Resume:
YASHA RANI
Mckinney, TX
***************@*****.***
https://www.linkedin.com/in/yasha-rani
4G, 5G PROTOCOL and RAN TEST ENGINEER
Motivated, resourceful professional with experience in Mobile Communications (5G NR, LTE, VoNR, VoLTE). Expertise in acceptance, performance, protocol conformance, carrier certification, sanity and regression field testing; running commercial test plans; detecting & raising issues of modems chipsets; updating application and cellular process binaries; maintaining daily issue reports. Consistently achieve deadlines, exceptional collaboration and communication with vendors and clients. Authorized to work: EAD card.
PROFESSIONAL EXPERIENCE
Mavenir (Mar 2022 to Dec 2024) – Full time role
5G RAN Testing
Project: 5G NSA RU Lab testing (Richardson, TX)
Key Contributions:
Validate testcases for different RAN features at many RAN layers(L1/L2/L3) which is physical layer, MAC, RLC, PDCP and RRC layers by following 3GPP and RAN standard specification.
Execute software upgrades, call processing, testing features and troubleshooting with RAN products.
Deploying and integrating containerized 4G/5G RAN microservice based products including CUCP, CUUP and DU on Linux/RedHat. Configured CU and DU on ipv4 and ipv6.
Ensure end-to-end connectivity for the RAN solution with packet core. This includes synchronization (PTP) and other Open RAN interfaces (Control, User and Management Plane).
Deployed Mavenir O-DU performance with different 4G and 5G RU vendors like MTI, Fujitsu, Zylink, KMW, NLA, IHGA, PUMA etc.
Troubleshooting network issues. Created JIRA ticket according for failed test cases to track the issue. Created tickets according severity of failures and follow up until issue doesn’t resolve.
Validated the performance of RF subsystems for link quality, connectivity(routers), reliability, handovers and throughput.
Performance and stability testing with Viavi TM500/E500 UE simulator equipment.
Interaction with network simulator vendors for upgrading simulator firmware, HW calibration and handling simulator issues.
Performed Functional testing for new features. Captured and analyzed Wireshark logs.
Executed LTE, VoLTE (IMS), 5G(NSA) testcases on TM500 using Mavenir CU and DU.
Mindlance Inc. (Nov 2020 - Sep 2021)
One of the largest Staffing Firms in the US specializing in IT and Clinical / Scientific
5G Lab testing Engineer
Project: 5G NR Conformance testing (San Diego, CA). Client: Qualcomm
Key Contributions:
YASHA RANI +1-571-***-**** ***************@*****.*** Page 2
Performed 5G GCF and PTCRB conformance testing using 3GPP spec 38.523-1, 38.523-2, 38.508-1 etc using Keysight and Anritsu test equipment.
Executed emergency EPSFB, RTT, EPSFB, VoNR testing, Multimode Testing and validate the UE logs.
Captured UE logs using QxDM.
Analyzed and reported issue / failure logs using QCAT, QxDM, Apex tool, report them to development team and follow up on it till issue was resolved
Created JIRA ticket for failed test case to track the issue.
Samsung Electronics America (Dec 2019 - Nov 2020)
National Staffing Firm
(BTI Solutions Inc.)
4G/5G NSA Lab testing Engineer
Project: Carrier acceptance testing (San Diego, CA).
Key Contributions:
Conducted Carrier Acceptance testing using simulators such as Rohde & Schwarz (CMW500), ANITE on Samsung Exynos chipset.
Perform AT&T 10776 Testing Plan, such as LTE Mobility management Procedures, Network selection, LTE Inter & Intra-RAT mobility, CSFB, LTE ENS, VOLTE/IMS & Handover from Different RAT to WIFI calling.
Execute Master test plan, regression for LTE, VoLTE, VoWiFi, 5G NR, on Samsung devices.
Perform Attach/ping, CSFB, VoLTE call, Downlink, Uplink, Bi-Directional Throughputs, Carrier Aggregation, SMS, MMS, Aging etc.
Reporting and analysis of failures such as Frequency Scan/Acquisition failures, OOS, delayed reselection leading to call drops, Low throughput, HO failures, reestablishment issues., etc
Test LTE, VOLTE, CSFB and all functional test cases using AT&T, VzW network in field and report issues with log snippets point to cause of the failure.
Execute automation (Written in python) test cases e.g CSFB, long call, SMS, Data throughput etc
Analyze Wireshark and Shannon logs and report issue/failure logs using chipset diagnostic tool, report them to development team and follow up on it till issue is resolved
Perform device calibrations and update builds on issue basis and continue testing
Worked with SW developers and analyze to find out the root cause of issue by doing testing with various binaries and test builds
Report protocol Issues software issues and crashes from both Application and communication Processors.
TECHNICAL SKILLS
Good knowledge on 5G, LTE Radio Interface Protocol layers – RRC, NAS, PDCP, RLC, MAC and PHY, signaling of initial Attach, RRC connection establishment, Re-configuration, Cell reselection/reselection, Intra LTE and Inter RAT handovers, CSFB, measurements, SMS, TAU, Paging, SIBs, Carrier Aggregation, Volte architecture, IMS, SIP Registration, Volte call, SMS over IMS.
Performed AT&T 10776 Testing Plan, i.e., LTE Mobility management Procedures, Network selection, LTE Inter & Intra-RAT mobility, CSFB, LTE ENS, VOLTE / IMS & Handover from Different RAT to WIFI calling.
Executed master test plan, regression for LTE, VoLTE, VoWiFi, 5G NR, 3G, 2G on Samsung devices.
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Performed attach / ping, CSFB, VoLTE call, downlink, uplink, bi-directional throughputs, carrier aggregation, SMS, MMS, aging.
Reported and analyzed failures such as Frequency Scan/Acquisition failures, OOS, delayed reselection leading to call drops, Low throughput, HO failures, reestablishment issues., etc.
Tested LTE, VOLTE, CSFB and all functional test cases using AT&T, VzW network in field and report issues with log snippets point to cause of the failure.
Executed automation (written in python) test cases e.g CSFB, long call, SMS, data throughput etc.
Analyzed and reported issue / failure logs using chipset diagnostic tool, reported them to development team and followed up until issues were resolved.
Worked on log analysis tools: Shannon, Qualcomm QXDM, Apex, QCAT, Wireshark.
Conducted device calibrations and update builds on issue basis and continue testing
Partnered with SW developers and analyzing data to determine issues root cause by doing testing with various binaries and test builds.
Reported protocol Issues software issues and crashes from both Application and communication Processors.
EDUCATION
Bachelor of Engineering: Computer Science Engineering (CSE)
Advanced Institute of Technology and Management for Women, Faridabad, India, August 2008 – May 2012
Work Authorization
Authorized to work with any employer in USA (EAD card)
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