RAJAN YADAV
Senior Test and Automation Engineer
Kausad
Summary
To work in a company that personifies my personality and standards and projects me as an asset to it. To excel and to contribute in the field of telecom/networking technologies in the form of testing and implementation or development.
Overview
7
7
years of professional experience
Work History
Senior Test and Automation Engineer
Semtech Advanced Systems India PVT. LTD. (Sierra Wireless)
03.2023
- Working on IOT device test scenario and troubleshooting
- Analysis and debugging of IOT-related issues in the field and lab scenarios using various tools like Wireshark Pcap analysis, and QCAT
- Create the test plan for and test the different scenarios for Sierra/ non-Sierra Modules
- Test in the live and simulated network with the help of Amarisoft, Anritsu
- Very good understanding on Jira, Confluence page and Keysight tool
- IOT use cases and able to create solutions for connectivity & analytics
- Troubleshooting and fixing the various issues related to LMNO and Roaming Sponsor
- Testing the various IOT modules according to the Test Plan
- Debug the 4G/5G KPIs issue and recommend how to improve issues
- Have a good understanding of 5G/4G Technology
- Good understanding of 5G NR protocol layers RRC, PDCP, RLC, MAC and Physical functionalities and log analysis
- Good Understanding of O-RAN-based solutions bring up and validation
- Usage of tools like XCAP, QXDM, and Wireshark dissectors log analysis
- Create a test plan for 4G/5G IOT devices
- Test Case Execution, Collect UE Logs for Fail Scenario through QXDM & XCAL and Analysis bug and reporting to Development Team
- Analyze the test result, troubleshoot, and decide the necessary modifications with the development teams and propose solutions and test corrections
- Excellent log analysis and debugging skills
- Usage of tools Like QXDM, QCAT, XCAL, XCAP, Wireshark etc
- Strong collaboration with R&D teams to discuss requirements, product issues and mitigation
- Identify and troubleshoot hardware and software technical problems
- Test automation using Python for wireless, telecom, cloud products with exposure to IOT domain.
5G Hardware and Firmware Developer
Jio Platform Ltd.
07.2022 - 02.2023
- Debug the issue related to CU/ DU crash, new release issue and new binary update
- Testing of 5G device and functional testing
- Troubleshooting hardware faults software issue related to various layers (Physical/MAC/RCC/PDCP)
- Debug the issues related to attaché/ detach, ANR, EPSFB, throughput etc
- Debug the issue of GNB and UE log
- Demonstrated ability to debug issues, integrate LTE nodes, test planning & and effort estimation, and interact with customers for technical discussions
- GNodB testing (LTE) system, RAN feature, Platform/Could Features, functional, performance/Stability Testing and Automation
- Exposure to RAN testing, including developing requirements, Test planning, test environment design and configuration, data processing, data analysis, issue root cause analysis & and resolution, and test reporting
- GNB System optimization by analyzing the performance of GNB through logs and issue identification
- RRC, NAS, RLC, PDCP, MAC message analysis, Log File Analysis
- Execute test plans, test cases, and test setups to verify and validate that product meet performance goals.
System Engineer
Parallel Wireless India Pvt Ltd.
01.2020 - 07.2022
- Execute test plans, test cases, and test setups to verify and validate that product meet performance goals
- Ability to collaborate with developers and those involved in interoperability, system, conformance, and field tests
- Engaged in lab testing of O-RAN radio functions for 4G for various bands
- Have a good understanding of 4G/5G wireless technology, Open Ran Specification
- Provided architecture solutions in multiple trials for cluster level field O-RAN sites setup by separating RRH & vBBU to save on latency and infrastructure requirements
- Demonstrated ability to debug issues, integrate LTE nodes, test planning & effort estimation and interact with customers for the technical discussions
- ENB System optimization by analyzing the performance of eNB through logs and issue identification
- RRC, NAS, RLC, PDCP, MAC message analysis, Log File Analysis
- Analysis of logs from commercial networks using eNB logs, performance Statistics and UE logs Execute test plans, test cases, and test setups to verify and validate that product meet performance goals
- Analysis and debugging the issue of LTE KPI’s like Accessibility (RRC Setup Success rate, e-RAB Setup Success rate, S1 Setup Success rate) Retainability (e-RAB drop rate), HO Success rate, IRAT Rate % & Service Integrity (throughput& UL), E-RAB Setup Success Rate, Handover Success Rate, Call Drop Rate, Voice Quality
- Comparison testing of O-RAN LTE radios with existing OEM radios for all major functionalities like accessibility, retainability, Intra and IRAT handovers, VoLTE, SRVCC and throughputs
- Setting up automated functions assisting O-RAN like neighbor addition/ deletion, PCI assignments, power control
- Good Understanding of O-RAN based solutions bring up and validation
- Usage of tools like QXDM, Wireshark dissectors log analysis
- Co-ordination with development, support team for product support and releases
- Drive tests Analysis and verification of KPI targets by verifying RSRP, RSRQ, & SINR and Throughput
- Responsible for New Feature/Parameters trails in new releases
- Able to work independently and investigate performance impacting causes
- Test major LTE features (Handover, VoLTE, SRVCC, IRAT, CSFB, CA) in the lab as well as field
- Supporting capacity management & operational planning function, forecasting requirements for License & HW capacity
- Possess sound knowledge of KPI Monitoring and drive test analysis using post processing tools like Citrix Neighborhood and Wireshark,XCAP,OSS tool,Citrix,Linux,Actix,QXDM,QCAT,Wind Catcher, ActixOne,PLANET, XCAP, Global Mapper, TEMS Investigation, MapInfo and Google Earth, ITK,Winfoil,Site Handler, Fact etc.
RF Engineer (LTE RAN)
Ericsson Global India Pvt Ltd. (Magna Infotech Pvt.Ltd.)
07.2018 - 12.2019
- Post launch optimization on various LTE/VOLTE KPIs, Accessibility, retainability and Mobility, Integrity, which includes (RACH, RRC Setup success rate, ERAB Setup Success rate, IRAT Handover success rate, DL & UL Throughput measurement & Drop calls etc.) Knowledge and practice of OSS, LRAN tools, Performance Management, Fault Management, Radio Access Configuration tools
- Understanding of LTE protocols: call-flows, security, and priority procedures (Volte, S1-MME, S1-AP, S1, S5, QCI, etc.) especially pertaining to RAN operations
- Undertake network performance improvement (KPIs) and optimization tasks
- Analysis of eNB and KPI to identify root cause of the problem
- Good understanding in LTE protocols - NAS, RRC, PDCP, MAC, PHY
- Good understanding of feature like TTI bundling, RoHC, HARQ process for FDD and TDD and parameter for MCPC, power boosting, handover, RLF and timers
- Performing site configuration checks, Power settings, Antenna configurations, implemented PCIs, PCI clashes, azimuth, Hand over parameters prior to the Drive test
- Checking and rectify PCI swap, coverage, and handover related issue, RRU faults Drive tests Analysis and verification of KPI targets by verifying RSRP, RSRQ, & SINR and Throughput
- Knowledge of Mobility & LTE architecture and LTE/VOLTE Inter-working including CSFB/SRVCC etc
- Knowledge of LTE and Volte Call Flow, Ericsson OSS
- Supports other functional teams/Project Teams/Customers directly to ensure optimization related activities Post launch and Prelaunch optimization
- Working Experience of Project like, AT&T, Claro, Vivo
- Drive based and drive less optimization
- Knowledge of SIP call flow
- MAC, RRC, RLC, PDCP, layer2, layer 2, layer 3.
RF Engineer (LTEAnalyzer)
Samsung Electronics India Pvt. Ltd.
06.2017 - 06.2018
- Working with Samsung as a National RF Optimization Engineer
- Optimization of LTE RAN Network based on monitoring and DT activities
- VOLTE drop rate Analysis
- VOLTE handover success rate analysis
- Perform Layer 3 analysis and recommendation
- Analysis of Worst cells and gives recommendation for its improvement
- Responsible for achieving target voice and data KPIs within assigned area
- Create the network Optimization requirement based on field inputs and Drive test data
- Analysis Drive report and give recommendation to the circle Team according to KPI failed analysis
- Analysis of all KPI including Handover, RSRP, SINR, Throughput analysis
- LTE user throughput analysis and improvement
- Optimization for improving both Coverage and Quality
- Correlating KPIs and drive test post processed data and identifying network performance improvement area and carrying out optimization with the help of field teams
- Handover optimization/Parameter optimization
- VOLTE Packet loss, VOLTE Setup time latency optimization
- RSRP, RSSI and SINR& Interference analysis
- Analyze report and give implementation for changes of Key Performance Indicators (KPIs)
- RAN, CSSR Volte drop and Handover report analysis
- Having good knowledge of MS PowerPoint/Office applications including Excel
- Accessibility, retainability and Integrity analysis
- BLER & CQI Analysis & Optimization for throughput
- Give recommendation to the circle team for changing azimuth and Tilt of antenna as per field report.
DTS LEAD (LTE Field Test)
Reliance Jio Infocom ltd.
10.2015 - 06.2017
- Analysis report with the help of my com and Actix
- RSRP, RSSI and SINR analysis
- Perform problem analysis on RSSI/VSWR and clearing alarm and troubleshooting LTE RET Configuration
- Having good understanding of Actix
- Accessibility, Mobility, DL Throughput analysis
- Traffic concept and signaling product function
- VOLTE Call flow, channel concept, customer complain, LSMR report
- Verify RR connection and KPI success rate
- KPI report analysis, RF planning
- New site survey, acquisition, WIFI survey, small cell planning
- Performance independent testing report
- Customer complain SLA maintain (SR Ticket ID) and RAN troubleshooting
- Ability to perform under time constrains depending upon the business requirement
- To create work order and close problems
- SCVT and MCVT drive and analysis
- Worked on optimization parameters and performance counters
- Having good understanding of support and supply process.
Education
B. Tech (Electronics and communication Engineering) -
Skyline institute of Engineering & Technology, GB Nagar
12th - undefined
inter college, Pindi Deoria
10th - undefined
inter college, Pindi Deoria
Skills
Good understanding of LTE and 5G Technologyundefined
Accomplishments
- Got NCC ‘C’ certificate in Army wing.
- Got 'RAJYPURASKAR’ in Bharat SCOUT& GUIDE.
Disclaimer
I hereby declare that the information furnished above is true to the best of my knowledge.
Timeline
Senior Test and Automation Engineer
Semtech Advanced Systems India PVT. LTD. (Sierra Wireless)
03.2023
5G Hardware and Firmware Developer
Jio Platform Ltd.
07.2022 - 02.2023
System Engineer
Parallel Wireless India Pvt Ltd.
01.2020 - 07.2022
RF Engineer (LTE RAN)
Ericsson Global India Pvt Ltd. (Magna Infotech Pvt.Ltd.)
07.2018 - 12.2019
RF Engineer (LTEAnalyzer)
Samsung Electronics India Pvt. Ltd.
06.2017 - 06.2018
DTS LEAD (LTE Field Test)
Reliance Jio Infocom ltd.
10.2015 - 06.2017
B. Tech (Electronics and communication Engineering) -
Skyline institute of Engineering & Technology, GB Nagar
12th - undefined
inter college, Pindi Deoria
10th - undefined
inter college, Pindi Deoria
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