MUBEEN SIDDIQUI MOHAMMED
Wylie,TX
Summary
With 10+ years of experience in LTE and 5G technologies, I have extensive knowledge of 3GPP specifications to seamlessly integrate, validate, and support cellular RAN and modem solutions. Expertise extends to the latest 3GPP features for a comprehensive understanding of their capabilities. Strong background in LTE and 5G Core entities/network functions and protocols. Well-versed in V-RAN and C-RAN solutions with a deep knowledge of RAN and Core NW architecture and deployment. Proficient in Software CI/CD tools, coding, and scripting for delivering high-quality results.
Overview
12
12
years of professional experience
1
1
Certification
Work History
RAN WIRELESS SME
SAMSUNG
06.2022 - Current
- Perform IODT activities to validate the latest 3GPP-released features in collaboration with various modem vendors.
- Perform in-depth analysis and debugging of DU (MAC and Hi-PHY layer), CU(PDCP), and RU(Lo-PHY) network elements and their interfaces.
- Maintained and upgraded SW packages for all virtual NW elements in a lab environment, using Kubernetes Kubectl and helm.
- Configured complex band combinations and RRM parameters in NSA and SA, with FR1 and FR2 cells to validate mobility features.
- Debug C/C++ software code to understand and enhance feature implementation.
- Performance analysis by capturing KPIs from production network clusters, monitoring degraded KPIs, debugging failures, and resolving issues to improve overall performance KPIs.
- Performed new feature and feature improvement trials to optimize and enhance network performance.
- Integrate, validate, and debug SW fixes on various network elements.
- Work closely with R&D teams to understand, implement, and validate the latest 3GPP features into RAN.
- Capture and analyze UE logs to debug site-specific RAN issues at PHY, MAC, RLC, or PDCP layers
- Prepared and presented technical solutions to customers every week, and provided KPIs analysis for post-implementation improvements.
SR. ENGINEER - IOT
CISCO
06.2020 - 06.2022
- Address network operator and end customer issues related to cellular radio and core network technologies.
- Debug and analyze the root cause of issues reported by end customers using various networking tools like Netscout, Wiresahrk, Anritsu, Splunk and other DB tools.
- Involve relevant teams if needed to debug and fix the reported issue and work closely with them to develop code fixes and release them
- Focus on data session issues and analysis based on radio and core network logs involving GTP and GTP-U traces.
- Perform DB queries and searches using SQL and Splunk to gather logs and information to address issues.
- Debug data/voice/SMS related issues with good understanding and knowledge of 3GPP specs for GSM, UMTS, LTE and 5G NR radio and core network protocols.
SYSTEMS INTEGRATION AND TEST ENGINEER
LTTS US
09.2017 - 06.2020
- Work with multiple teams to integrate and test pre 5G and 5G NR 3GPP 38.XX compliant products
- Work closely with Physical Layer firmware team for development, testing and integration of 5G NR CU + DU + RU solutions
- Test FR1 and FR2 PHY features using Keysight PRT setup and test scripts and troubleshoot failures
- Perform modem interoperability testing on pre-5G prototype
- Test and demo 5G use cases, LTE-5G interworking
- Perform end to end performance testing using UDP and TCP IPERF
- Involved in RF Performance testing on a day-to-day basis, plotting and presenting various RF measurement graphs (BLER, RSSI, RSRP, SNR, etc.)
- Perform Massive MIMO beam selection, test specific beams with understanding of beam maps
- Debug issues on all 5G protocol layers as seen during testing
- Test and debug new Physical layer features pertaining to NR
- Debug Data throughput issues from UE logs as well as NW side Wireshark logs
- Perform CAN bus data TPUT test and demo over 5G link
- Monitor packets going from AP to physical layer and report performance issues
- Create regression testing scope to test engineering builds with changes from dev team to eliminate side effects
MODEM R&D TEST ENGINEER
LE ECO
05.2016 - 07.2017
- Successfully implemented AT command support required by operator in AMSS ATCops
- Implemented MBN changes under modem_proc/mcfg based on carrier requirements and successfully provided modem configuration software changes
- As Modem R&D Test Engineer, I work with teams across different platforms during complete software life cycle of smart phone device from Pre-EVT to CS and support any customer reported issues for release candidate software
- Work closely with modem vendor Qualcomm, Telephony, UI and BSP teams for smooth and successful integration of new features and fixes
- Trouble shoot Wi-Fi/WLAN issues using different BSSID, capture logs using sniffing tools and analyze issues using Wireshark
- Work closely with Wi-Fi Alliance Certification labs and debug any failures reported on high priority basis
- Work on modem configuration files to incorporate carrier specific NV/EFS settings using MBN XML and XLSM files
- Apply CR integrations as required based on Qualcomm baseline upgrades or fixes for failing test cases
- Debug data throughput issues at LTE physical layer level
- Create automation scripts for testing and software integration purpose using Python
- Fully support IMS VoLTE, SMS, VT and RCS features
- POC for IR94 integration and bring-up
- Worked on TMO and ATT projects and supported software development for carrier requirement compliance
- Work proactively on failures reported by test team and provide test build with fix integrated then merge changes to source code once fix is verified
- Work on multiple projects simultaneously and provide analysis for any failures reported to modem team
- Use Opegrok and GIT to check code and apply required changes and fixes
RADIO ACCESS TECHNOLOGY LAB ENGINEER
INSIGHT GLOBAL / ATC
09.2014 - 04.2016
- Received appreciation for successfully setting up W2BI test setup in Lab
- W2BI uses complicated set test simulators interconnected using LAN and RF cables
- Successful drive carrier acceptance testing at operator labs, VZW NDET lab and IOT lab
- Debug LTE protocol issues at modem software level using QXDM, QCAT, QPST, etc
- Perform UTK testing, Carrier specific testing (ATT 10776 and Verizon Test plans), conformance testing (GCF/PTCRB), sanity and regression testing on new builds and hardware
- Perform inter-operability testing and debug issues on Device/Network side, work with Ericsson, Nokia and Samsung eNB/Base Stations
- Specifically handle W2BI setup and test plans, RCS testing and IMS R&R testing
- Execute and analyze test cases related to IMS, LTE, UMTS, GSM and CDMA technologies
- Test automation using Python and Appium
- Perform device validation on simulators like Anite, Spirent, Anritsu (RTD and PCT), Agilent and R&S
- Capture and analyze QXDM, ADB shell, Wireshark and simulator logs and highlight failing point
- Raise issue in DMS and assign to relevant teams (modem RIL, UI, modem or simulator support for script issues)
- Track raised issues until they are resolved or closed
WINDOWS PHONE SOFTWARE TEST ENGINEER
FLEXASOFT LLC.
11.2012 - 09.2014
- Successfully differentiated Simulator related issues and resolved with working with Simulator support
- Received appreciation from Manager and Senior Engineers for quality of testing and bug details
- Debug LTE protocol issues at modem software level using QXDM, QCAT, QPST, etc
- Perform UTK testing, Carrier specific testing (ATT 10776 and Verizon Test plans), conformance testing (GCF/PTCRB), sanity and regression testing on new builds and hardware
- Perform inter-operability testing and debug issues on Device/Network side, work with Ericsson, Nokia and Samsung eNB/Base Stations
- Specifically handle W2BI setup and test plans, RCS testing and IMS R&R testing
- Execute and analyze test cases related to IMS, LTE, UMTS, GSM and CDMA technologies
- Test automation using Python and Appium
- Perform device validation on simulators like Anite, Spirent, Anritsu (RTD and PCT), Agilent and R&S
- Capture and analyze QXDM, Power Shell, Wireshark and simulator logs and highlight failing point
- Raise issue in MS Bugger Tool and assign to relevant teams (modem RIL, UI, modem or simulator support for script issues)
- Track raised issues until they are resolved or closed
Education
Master of Science - Electrical and Electronics Engineering
Texas Tech University
Lubbock, TX05.2011
Bachelor of Technology - Electronics and Communication Engineering
Jawaharlal Nehru Technological University
Hyderabad, India05.2008
Skills
- Windows
- Mac OS
- LINUX
- Embedded systems
- C/C
- Python
- GIT
- Jenkins
- Jira
- Matlab
- LabView
- Signal Generator
- Oscilloscope
- Vector Signal Analyzer
- Spectrum Analyzer
- Wireshark
- QXDM/QCAT
- Anritsu MD8570A/MD8475A
- Keysight UXM/UXA
- Kubernetes architecture/ Container orchestration
Certification
- Recipient of graduate student scholarship (2009-2011), Dept. of EE, TTU
- IEEE 4 Day Intensive Wireless Communications Course
- 5G System Engineering (MPIRICAL)
- Digital Signal Processing
- Digital Communications
- Cellular and Mobile communications
- Antenna and wave propagation
- Electromagnetic theory
- Parametric & functional device testing
- Software Refactoring
- Software Requirements elicitation
- Wireless communications
- Microprocessor Architecture
- Optical communication systems
- Fiber optic systems
- Modern optics
https://www.linkedin.com/in/mubeen-siddiqui-mohammed/
Timeline
RAN WIRELESS SME
SAMSUNG
06.2022 - Current
SR. ENGINEER - IOT
CISCO
06.2020 - 06.2022
SYSTEMS INTEGRATION AND TEST ENGINEER
LTTS US
09.2017 - 06.2020
MODEM R&D TEST ENGINEER
LE ECO
05.2016 - 07.2017
RADIO ACCESS TECHNOLOGY LAB ENGINEER
INSIGHT GLOBAL / ATC
09.2014 - 04.2016
WINDOWS PHONE SOFTWARE TEST ENGINEER
FLEXASOFT LLC.
11.2012 - 09.2014
- Recipient of graduate student scholarship (2009-2011), Dept. of EE, TTU
- IEEE 4 Day Intensive Wireless Communications Course
- 5G System Engineering (MPIRICAL)
- Digital Signal Processing
- Digital Communications
- Cellular and Mobile communications
- Antenna and wave propagation
- Electromagnetic theory
- Parametric & functional device testing
- Software Refactoring
- Software Requirements elicitation
- Wireless communications
- Microprocessor Architecture
- Optical communication systems
- Fiber optic systems
- Modern optics
Master of Science - Electrical and Electronics Engineering
Texas Tech University
Bachelor of Technology - Electronics and Communication Engineering
Jawaharlal Nehru Technological University
Similar Profiles
Carlos MendozaCarlos Mendoza
Pipe Welder at SamsungPipe Welder at Samsung
Jasmine CarterJasmine Carter
Logistics Area Lead at SamsungLogistics Area Lead at Samsung
RONI PORATRONI PORAT
Influencer Marketing Manager at SamsungInfluencer Marketing Manager at Samsung