SUMMARY

• 6+ years of experience in IT, Manufacturing, Telecommunication, Developing, Testing and Technical Support.
• Have a thorough knowledge on the Optical Transport Network architecture and MPLS platforms.
• Good knowledge ofRFAntennatheory, Microwave DevicesandTheory, Semi - Conductors. .
• In-depth experience in RAN analysis on VoLTE/LTE driving parameter and feature trials for improving KPI's on VoLTE and LTE.
• Good understanding of LTE Protocols, PHY/MAC/RRC layers, 3GPP standards, LTE Interface, Functionality and Procedures.
• Good knowledge of IMS Core technologies and protocols for VoWiFi network like SIP, DIAMETER, ENUM/DNS, P/S/I-CSCF, HSS, TAS, MGCF, PCRF, SBC) and 3GPP2 standards like IS-41, WIN, Authentication, E911,WPS.
• Good understanding of EPC core Architecture (eNodeB, MME, S-GW, PDN-GW) Network Elements and Interfaces and BTS architecture.
• Troubleshoot and solved complex, multilayered issues onLTEeNB/base Stations, service routers and Operations Administration and Maintenance (OAM) Servers.
• Working knowledge of CDMA, iDEN, EVDO, and LTE design concepts.
• Possess good understanding of different data Protocol stacks such as TCP, IP and UDP. Competent understanding of network concepts, IPv4/6, TCP/IP stack and common Internet protocols such as HTTP, HTTPs, SSH, DNS, FTP etc.
• Strong understanding of both analog (traditional dial) and IP (VOIP) dial solutions.
• Thorough understanding of WLAN technologies including knowledge of wireless technology 802.11 b/g/n/ac.
• Hands on knowledge of ALU/Nokia LTE TDD and FDD parameters and Ericsson parameters.
• Hands on experience with testing tools like JDSU, QXDM, QCAT, QPST, QMICM, QMI Test Pro, Wireshark etc.
• Experience with carrier-grade network monitoring tools such as Tektronix Iris view, Empirix Call Analyzer, Oscilloscope, Power Supply, and Spectrum Analyzer.
• Proficient in developing web page quickly and effectively using HTML 5, CSS3, JavaScript and J-QUERY.
• Used JIRA for bug tracking.Used SVN, GIT for version control.
• Proficient in advanced software applications including MS Office, MATLAB and Microsoft Visual Studio.

TECHNICAL SKILLS

Technical Tools: QXDM, QCAT, QPST, QMICM, QMI Test Pro, Wire shark, LAB view, Empirix Call Analyzer, Oscilloscope, Power Supply, and Spectrum Analyzer, JDSU (Agilent), Iris View CommscopeBTSequipment, AutoCAD, Putty.

Languages: C/C++, Visual Studio, Shell, Python & Perl.

Web Technologies: HTML, HTML 5, CSS, BLUE-JS, BLUE-UI, CSS3, Java, JavaScript, Angular-JS1-2, JQuery, AJAX, XHTML, XML, JSON.

IDE & Editors: Notepad++, Visual Studio 2010, Eclipse, NetBeans, Dreamweaver. Application Server Apache, IIS.z.

Database& servers: Windows Server, SQL Server 2005, MySQL, GIT, oracle.

PROFESSIONAL EXPERIENCE

Product LTE Engineer

Confidential - Birmingham, AL

Responsibilities:

• Responsible for technical support of Wireless products and solution.
• Responsible for developing test plans and maintaining test specifications, providing product development support to vendors as well as interfacing with Sales and Network Engineering teams.
• Creating and managing product test documentation. Completed verification and validation of functional software releases through the planning and implementation of system-level test plans.
• Performing LTE and IMS (VoLTE/ Voice over Wi-Fi (VoWiFi). Logging of the phones with different chipsets like Confidential and with tools like QXDM/QPST. Monitor and support defects, troubleshoot and log issues using Wireshark.
• Provisioningof Ericsson Ethernet to Cell Transport andLTENetwork Elementssuch as eNodeB, HSS, MME etc.
• Performed System testing, Functionality testing, Black box testing, GUI testing, Back-end testing, Regression testing, Parametric testing, Protocol testing, IOT testing, AGPS/SUPL testing, Audio testing, KPI Testing for phones and tablets on LTE technologies.
• Develop and perform test plan coverage of patch fixes deliverable into SLC LTEEPC. Manage, maintain, deploy, install, configure and integrate LTEOAMrelated products and worked on services in Network readiness Labs.
• Involved with the System test team for testing and validation of Motorola WAVE PTT Solution. Performed functional tests on the Push-To-Talk Server OMA/3GPP Complaint.
• Responsible for the procurement, installation and integration for the wireless network infrastructure equipment such as: 9K cisco routers, MME, PGW, SGW, F5 load balancers, Cisco Switches Nexus 7710, STP servers.
• Activities include pre-and post launch KPI generation and analysis for network performance improvement and troubleshooting plus Drive Testing support for ATP using TEMS.
• Complete familiarity with the analytical and reporting tools associated with optimization and performance. Detailed knowledge of OAM platforms and network equipment nodes.
• Involved with the System test team for testing and validation of Motorola WAVE PTT Solution. Performed functional tests on the Push-To-Talk Server OMA/3GPP Complaint.
• Updated, improved, and enhanced availability of service documentation for end-of-line testers by placing it on corporate intranet in HTML format.
• Testedfirmwarefunctionality, usability, scalability, and performance for every build. Tested Web UI and browsers, based on JavaScript, HTML5.

VoLTE Engineer

Confidential - Westlake, TX

Responsibilities:

• Analyzing call processing/protocol issues, certification issues during RF/protocol testing, integrating SW fixes.
• Use Iris view and debug SIP call flows. Analyze VoLTE SIP drops and lost call through IRIS view.
• FResponsible for rapid troubleshooting and resolution of network issues related to 3GPP2 CDMACore, RAN and 3GPPLTEin dynamic working environment.
• Perform traces and simulate scenarios through the Switches, Base Stations, Wireless Towers, and Authentication Servers (AAA, HLR, and HSS). Work closely with the New Features Group to assist in the deployment of new features and devices.
• Managed lab databases, integrated network elements, and verified call processing and sanity checks. Designed and delivered test specifications for 1X-CDMAhandoffs, call performance suites, subsystem, and system level test cases.
• Worked with Nokia/Ericson engineers for site integration and installation for Alcatel routers 7700. Working with Lucent 5ESS Wireless Switch, Ericsson EVDOLTESwitch maintenance, integration and upgrades.
• Troubleshooting on ALU and Nokia product line and associated OSS interfaces (e.g. SAM, NetAct, WPS, BTS Site manager, etc.).
• Performed troubleshooting design (site configuration file), commissioning file, LTE eNB/RRH during integration, and site alarms
• Testing and troubleshooting network connectivity issues applying the OSI model.
• Perform VoLTE/ IMS, SRVCC, Voice over Wi-Fi (VoWiFi) tests. Performed device IOT testing on LTE network and CDMA, Embedded product testing.
• Validated software, hardware and performance with EricssonCDMA/EvDo and LTE infrastructure inIOTlab.
• Performed VoLTE analysis on RTP audio gaps, SIP call drops, sip failures, QCI 1 dedicated bearer drops, Volte bearer setup failure analysis by using Wireshark and IRIS view packet traces.
• Created and performed 4G LTE acceptance test plan (ATP) validation for TCP/IP/UDP/RTCP/RTP/SIP/ETHERNET protocols.
• Working on testing and implementation of E-911 and LBS features on the handset and on the network.
• Monitoring, executing post migration regression tests assuring network meets agreed KPIs and properly charges the subscribers internally in theCisco ASR5000charging system and other NEs through standardized interfaces (DIAMETER: Gx/PCRF, Gy/Online Charging System; GTPP: Ga/Offline charging system; RADIUS).
• Successfully testedWiFiarrays which utilized 802.11a/b/g/n/ac. Provide consulting and implementation management for VoWiFi solution based on IMS architecture and unique implementation solution.
• Worked on LTE iWLAN feature with ePDG server for seamless mobility between 3GPP network and non-3GPP network.
• Installation and implementation of WAN circuit hardware, routers,firewalls,load balancers, IP Gateways, Layer 2/Layer 3 LAN switches,wireless controllers, and controlled or standalone access points.
• Execution and analysis ofOAM, Security, Reliability Failover, Functionality Test Plan for WSS and MGW.
• Working closely with SMEs on VoLTE for Business/One Talk project. Involved in End to End VoLTE for business device and MEP testing and also involved in FOA V4B testing.
• PerformedVoiceand Dataqualitytests usingSpirentNomad, Datum, and QPST QXDM software.
• Using Perfecto app formobileautomation for android and IOS different deceives on cloud platform.

Modem LTE Test Engineer

Confidential - Austin, TX

Responsibilities:

• Responsible for manual and automated testing and verifying networkprotocolrequirement for different embeddedmodemssupporting LTE/GSM/GPRS/CDMA 1x/EVDO.
• Responsible for all the product stability test efforts to bring up Confidential chip MSM8610, MSM8974,MDM9635, MDM9x45, MSM8994, MSM8992, MSM8952, MSM8909.
• Collecting and analyzing logs for various devices to check the functionality and network connectivity using Throughput Testing, Regression Testing, KPI Testing, and Sanity Testing.
• Responsible for testing Confidential 's IMS solution for services such as Voice over LTE (VoLTE) and Video Telephony (VT).
• Execute lab conformance test plans in the Confidential lab environment using various tools and test equipment. Test and verify network protocol requirements for complex digital modem products supporting VoWifi, VoLTE, LTE, UMTS (HSPA+) and C2K technologies.
• Testing device (stationary/mobile) functionality during different kinds of handovers and analyzing the messages exchange between UE and network on particular Software Builds.
• Tested SMS, MMS, HTTP Browsing, Media RTSP Streaming, Bluetooth, WiFi, GPS, and Telephony on BREW, Android, and other device platforms.
• Good understanding of Android logs & Application Testing using Linux Android Perl and shell commands, collect required logs and report it to debugging team for further Analysis.
• Perform initial Analysis of the CRASH Dumps using Crash Scope. Analysis of Android Logs to determine the test action causing the issue.
• Development and execution of test plans formodemproduct lines and system level features.
• Perform Field testing using QXDM with reference devices and customer devices for IRAT scenarios. Field testing includes latest software build testing, collecting logs, finding system crashes for lab debugging. Performing FTP/UDP throughput test cases for single/dual carrier, single/dual SIM.
• Perform Confidential &T 10776 Acceptance testing in emulated lab environment, support validation team to meet Confidential &T technical requirement and Test Plan.
• IRAT testing of the chipset using Rohde & Schwarz CMW500. IRAT scenario as a replica of mobility, in and out coverage and cell edge.
• Experience with writing post-processing scripts usingPythonto extract Key performance Indicators (KPIs) and debug degradation in performance.
• Using Perl/Pythonscripts to flash modem build images on multiple devices with upcoming modems for IOS and Android devices.
• Running the Shell scripts in LUNIX to generate test reports and test data.
• Triaging issues seen in internal testing by using Trace T32 (JTAG) and helping developers for further debugging. Reporting Modem, Apps, Power, WCNSS, Boot Crashes from the devices on particular Software build.
• Worked with various teams to stabilize the 8x10 chip set. Helping them in reproduce issues with the Engineering Builds. Following up with developers on JIRA tickets and also collecting required logs for further analysis.
• Calibrating/Bench Validation of RF paths involving signaling and non-signaling tests on QCT based BB products for RATs including GSM, WCDMA and LTE using Confidential calibration tools QSPR, QRCT, R&S CMU 200/CMW 500 Call boxes. Worked with LTE modem test team for feature breakout between LTE modem test team and WLAN test team.

RF Engineer

Confidential - Berkeley, CA

Responsibilities:

• Lead a drive-test team in the field to collect CW (continuous wave) path-loss data. Ensure that test kit is complete, with back-up equipment, so all test gear is working properly, calibrated and accurate.
• Perform walk testing, Benchmarking and drive testing for WCDMA, GSM, UMTS, CDMA 1x/EVDO, AWS, VoLTE, LTE network, site verification and troubleshooting.
• Manage team logistics such as air travel, van rental, hotels, and etc. while in the field. Worked on various workflows like Travel Request, Travel Expense, Mass leave approval and Time Correction.
• Calibrate RF propagation models using Newfield proprietary and off-the-shelf software tools such as Asset, Atoll, GeoPlan and Planet EV
• Support RAN engineers with LTE cluster optimization assignments using TrueCall.
• Work in concert with Newfield RF engineers and others Confidential headquarters to coordinate effective test plans, test schedules with clients.
• Worked with client (cellular carriers like Confidential &T, Confidential, MetroPCS, T-Mobile, etc.) cell technicians, RF engineers and real estate managers to obtain timely access to cell sites and to trouble-shoot issues quickly.
• Running basics RF test cases on CMW 500 to ensure quality before sending out test units to operator’s and other test vendors.
• Knowledge of JDSU software for Collecting RF Mobile Network Data and Throughput.
• Experience with RF testing andoptimizationtools including: TEMs, Spectrum Analyzer, and JDSU.
• Designing, network planning and optimizing of 802.11a/b/g/n wireless LANs using Wi-Fi module. Development of Radio propagation model for MM Wave and 5G (28 GHz).
• Assist with configuring and troubleshooting issues on the CSR (Cell Site Router) for IP Backhaul connectivity between RAN equipment and Routers, which provided Bear Signaling and OAM Interaction.
• Design suggestions for the upcoming EPC core LTE/UMTS sites based upon the traffic pattern. Selection of appropriate eNodeB/ NodeB candidates for building and integration. Decommissioning request of under-utilized sites.
• Tested antennas for radiation patterns in an anechoic chamber and gained experience with Electromagnetic and RF measurement equipment like Network Analyzers, Spectrum Analyzers, RF Faders, Splitters and Signal Generators.
• Analyze propagation modeling and “drive test” measurements and make recommendations for site optimizations.
• Troubleshoot VSWR issues within the base station lines and antenna system. Integrate and optimize BTS to new eNodeB's capacity additions into the existing network for outdoor Macros Cell Sites and indoor DAS Cell Sites.
• Coordinated with network operations, traffic, and RF engineering to perform cover and capacity demand improvements including antenna/carrier modifications and BTS additions.

RF Field Engineer

Confidential - Reston,VA

Responsibilities:

• Perform drive testing using Anite Nemo Outdoor/Agilent/Tems/Actix providing benchmarking solution to Alltel/ Confidential &T/Sprint networks.
• Test equipment for system optimization using TEMS and JDSU of wireless public safety ordinances file regulatory documents, issue operational work orders, update databases, and create project reports.
• Perform site verification and missing neighbor detection using drive test data.Helped in post processing using wind catcher tool to determine the quality of data.
• Sector verifications. Soft Handover/Hard Handover, RNC -RNC handover Testing. Perform drive testing of ATT cell sites and analyzed Sector Swap, dropped call, blocked call.
• Prepared KPI reports for Drop Call Percentage, Call Setup success Rate, Ec/Io, CS/PS origination failures, Handover success ratio.
• Pre and Post RNC Re-home testing and Report generation. Performed RAN and EPC Core elements integration and performance testing.
• Parameter recommendation for achieving proper traffic distribution between UMTS Layer and GSM network.
• Responsible for contributing in the RF Design of the existing regional LTE network, Prepare FCC/FAA submissions in a timely manner.
• Perform radio engineering evaluation for system planning and site acquisition.
• Update all project trackers, and work closely with local RF Engineer and Regulatory Specialist to prepare necessary zoning/regulatory filings for sites ensuring that compliance is met.
• Utilize propagation tools and other RF related equipment for propagation, coverage review, zoning and regulatory.
• Monitors system performance indicators such as dropped calls, blocked calls, origination failures, handoff failures, review capacity reports and forecast for short and long term site/system requirements. New Builds: issuing search rings, running RF propagation, attending site walks, site selection, filing regulatory submissions (EME, TVW's, e911), review construction drawings, and creating RF designs(antenna selection, centerline, azimuths, down tilts). Site modifications: initiate RF design for Carrier add projects and site optimization projects.
• Perform CSFB testing to verify LTE call success rate and call drop rate, speed test and E911.
• Analyzed various RF parameters such as RSRP, RSRQ, RSSI, SNR, and Average Power and made sure they fall under acceptable range.
• Troubleshoot VSWR issues within the base station lines and antenna system. Integrate and optimize BTS to new eNodeB's capacity additions into the existing network for outdoor Macros Cell Sites and indoor DAS Cell Sites.
• Coordinated with network operations, traffic, and RF engineering to perform cover and capacity demand improvements including antenna/carrier modifications and BTS additions