DIVYA THUMMELAPALLY

Ph: 972-***-****

ad46yv@r.postjobfree.com

EDUCATION:

Master of Science in Electrical Engineering

Focus Area: Communications and Networking

Texas A&M University- Dec 2012 Kingsville, TX

Relevant Coursework:

Satellite Communications, Introduction to Computer Networks, Communication Theory, Antenna Analysis and Design, Telecommunication Security and Protocols, Speech Processing, Digital Signal Processing, Analog VLSI Design, Introduction to Analog Integrated Circuits.

Bachelor of Technology in Electronics & Communication Engineering

Jawaharlal Nehru Technological University –May 2010 India

Areas of Interest

RF Design/Optimization Engineering

RFDS and CIQ Management

CBAND deployment

System Analysis and Design

CBAND/5G SA & NSA/mmWave/LTE/VoLTE optimization

SOFTWARE, PROGRAMMING & TECHNICAL SKILLS:

RF Tools: USM, XLPT, NMT, Actix, MapInfo, Autoforms, IWM, Planet, Wind Catcher, eDAT, WIPS, Zite, RTT, ELPT, Actix One, SANE, SSAT, Geo Plan, AMOS, Atoll, SPLTE, True Call, Datapro, Airwave, FUZE, DMAT, Google Earth, QUANTUM, Business Objects, AccuV, OneData, RoofView, AriesoGeo, WirelessLogix, Comarco, Ericsson TEMS.

CAD Tools: MATLAB, PSPICE, MODELSIM, Sonnet

Data Collection Tools: JDSU, NEMO, QXDM, DataPro.

Languages: C, Data Structures, SQL.

Applications: Microsoft Office, Excel.

Equipment: Oscilloscopes, Signal analyzers, Function Generators, Spectrum Analyzers, amplifiers and Electrical diagnostic tools.

Organization and Communication: Team Management, Leadership, Coordinator, Team player, Quick learner with excellent communication skills.

SUMMARY:

Senior RF Engineer with 11 years of professional experience in Network design, Engineering, Implementation, Integration, Performance Analysis and Troubleshooting.

Turn up CBAND, 5G SA/NSA/mmWave and VoLTE New Builds, Carrier Agg sites, AWS, 850, FNET, DL Only and PCS Carrier adds and responsible for analyzing data and optimizing poor RF Coverage areas for multiple carriers CBAND/5G/VoLTE/LTE network.

Establish performance trends and patterns to understand impact of specific 4G & 5G KPIs on overall customer/user experience & recommend actions to improve network performance.

Heavily involved in Project Management activities for project delivery.

Manage projects by communicating with stakeholders and users.

Evaluates performance of RF system and recommended design improvements.

Optimize multi-carrier 5G NR SA/NSA, CBAND, mmWave and LTE network for the successful handovers between different bands.

Good hands-on experience on propagation tools.

EXPERIENCE:

Samsung Electronics No-Harm Lead- RF Engineer III June 2022 - Present

No Harm Team Lead for Central Texas market for a tier 1 wireless operator (Verizon).

Optimize 5G NR, DSS and LTE (Macro & small cells) carriers after migrating from Nokia to Samsung RRU’s (SNAP Verizon project).

LTE, CBAND and 5G RFDS and CIQ creation using FUZE data.

Working on design to prevent UL muting on VZ LTE bands.

Troubleshoot the sites in No Harm period using XLPT, USM and True call to match the pre baseline KPIs.

Perform Audits and Align parameters and features for optimum performance for VoLTE/LTE Samsung.

Detailed network analysis, fine-tuning of parameters to maximize 5G NR/LTE/VoLTE performance and identification of network bottlenecks impacting subscriber experience, such as low throughput (UL/DL), CQI, RTP Gap, SIP DC, accessibility, retainability, RRC Setup failures.

Working closely with Tier 3 & Tier 2 team to identify and resolve different issues on 5G/ CBAND/LTE/VoLTE after the SNAP/ DSS/ CBAND Integrations.

Responsible to provide RCA documents on 5G/VoLTE/LTE Optimization.

Weekly Customer Meetings to present the project Status, KPI Troubleshooting Results, new strategies, coming features and releases to be implement in the network.

Nexius Solutions Senior RF Engineer-Team Lead Jan 2018 – May 2022

RF Design Team Lead for a tier 1 wireless operator (AT&T), responsible for several major markets including North Texas, Arkansas, Oklahoma, New England, Illinois Wisconsin, and New Mexico.

Leads and creates Radio Network Design Customer Input Questionnaire (RNDCIQs) for LTE, 5G NSA/SA, mmWave and CBAND wireless generation Technologies.

Create an RFDS package from scratch (RF Design sheet, Antenna plumbing Diagram, and antenna sheets) using Auto forms application for Macro sites.

Integration checks and optimization of 5G Sub6, DSS, mmWave, VONR, NSA & Stand Alone.

Provide and plan all Radio Network Access (RAN) information for planned network change management (CM) activities including eNB/gNB Identification, EUtran/NR-EUtran Parameters, PCI, Clusters, EUtran neighbor relations, Co-Sites setting, LTE-UMTS Frequency relations, LTE-LTE Frequency relations, 5G-LTE relations and 5G-5G relations.

Oversaw AT&T first 5G Standalone Integrations in one of the major markets. Collaborated and worked with civil construction, integrity, scripting, closeout, new site build (NSB) and R&D teams to complete the project without any issues.

Generate and analyze daily 5G, LTE Key Performance Indicator (KPI) reports after Integrations/CM activities using Ericsson OSS, QUANTUM, AriesoGeo, Power Bi tools. Identify KPI issues based on results from analysis. Troubleshoot and optimize performance by improving KPI’s such as accessibility, retainability, throughput, MIMO, and call quality.

Provide support for Software developing group by providing functionality requirements and being responsible for maintaining and updating existing tools inputs, such as LTE, 5G and CBAND Gold Standard essentials and other engineering templates needed for GS Audit tool and LTE, 5G and CBAND scripts generation based on each new software release or requirement.

Contribute to the RF Design of the regional cellular, First Net B14, PCS, AWS, WCS, and 700/850 MHz LTE network including search area definition and issuance antenna system design, candidate evaluation and assessment, and approvals within sector area of responsibility.

Support Integration team for any issues during CBAND/5G or LTE new build or carrier add integration.

Perform RCA (Root cause analysis) for high level escalations and degradations to the nodes that was caused due to activities on the network. Auditing existing parameters on the eNodeB’s and provides recommendations to improve network design.

Responsible for Analysis, deployment, optimization and troubleshooting the Network.

Perform parameter audits, data fill parameters, conducted pre-post analysis and create performance reports.

Generate the daily performance reports for Texas markets after Post Integration and optimize the performance issues using Ericsson OSS, QUANTUM, AriesoGeo and Business Object tools.

Expert designing the sites on ATOLL considering the clutter, surrounding area, Capacity, and coverage issues. Using proper propagation models, antennas, height, azimuths, and tilts following the market standards to avoid Interference with neighboring sites.

Verizon Wireless System Performance Engineer June 2015 – Dec 2017

Integrate and optimize new sites and Carrier Aggregation/adds (AWS, PCS & 850 VoLTE/LTE) into the network. Analyzing events, low throughput, interference, and coverage Issues using tools like RTT, ELPT, True Call, SpLTE, MPT, Netgeox and Optimizing them by tilt & power adjustment and tweaking the LTE parameters in achieving the traffic balancing between multiple carriers.

Analyze Voice/Data complaints from the customers of technologies VoLTE, LTE, CDMA, EVDO and providing them resolution.

Prepare Atoll database for RFDS creation.

Create audits for Network effecting factors like Missing Neighbors, High runner handoff failures due to PCI collisions and Confusions and worked accordingly to add the neighbors or to remove the PCI collisions or confusions to reduce the HO Failures.

Performing radio engineering evaluations for system planning and site acquisition

Create scripts to simplify the neighbor add in AMOS (Ericsson OSS).

Supported local drive teams to perform VoLTE E911 testing for the GBO markets. Created scripts to automate the barring and unbarring process for E911 to make workflow smoother and less time consuming.

Site scoping work and solution finding within RF Design standards.

Perform drive testing and analyze VoLTE/LTE/CDMA drive data. Monitor network statistics and adjust RF parameters accordingly.

Administrate system translation audits and updates.

Define and discuss all inputs and outputs for design LTE networks, such as link budget, coverage, capacity, PCI and rachrootsequence planning, TAC, propagation models, baseline settings final design settings. This role includes coordinating, execution and leading all design plans.

Alcatel-Lucent RF Engineer October 2014 – May 2015

Optimize LTE network by RF matrices RSRP, RSRQ, SINR and RF parameters based on drive data to meet launch KPIs.

Identify pilot pollution and take corrective action such as reducing CPICH, performing footprint optimization to create dominant servers and requesting scrambling code retune.

Provide detail analysis of RF condition and events (call drops, call access failures, intra frequency handoffs, inter frequency handoffs, IRAT handoffs, CS fallback access failures and CS fallback call drops.

Generate script files (WO) necessary for RF optimization using Alcatel-Lucent WPS tools and execute said script per customer requirements.

Other Responsibilities include UE Layer3 log analysis. WO preparation for Neighbor List/Parameter/SIB19 implementation, GPT audit, UL Noise tracking and troubleshooting, SSD report, troubleshooting and escalating site issues.

Mobilenet Services RF Optimization Engineer July 2013 - September 2014

Work on post drive data analysis in close coordination with optimization engineers using Actix and Wind Catcher for network optimization for AT&T.

In depth drive log analysis using ACTIX (Analyzer/Spotlight) to troubleshoot CS/PS setup failure, drops, cell selection/reselection problems, inter, intra missing neighbors, HSDPA/EUL throughput analysis.

Create thematic for Site estimations, Drive Routes, neighbor list by using MapInfo 7.8 and 10.5.

Intra, Inter & IRAT Neighbor Optimization and inconsistency removal with self-prepared tool in Excel.

Coordinate with Market leads, Drive testers and Operation Service Centers regards to trouble shooting the test sites.

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