SUMMARY:

Self - motivated professional with 10+ years of experience in telecommunications engineering field. Strong organizational and communication skills. Enjoys working complex projects, providing theoretical insights and process design skills, organizing ideas into action plans, and working to remove obstacles to goal attainment. ed as competent, productive and a strong supportive team player. Brings creativity while being task-focused and deliberate. Extensive experience in RF test software and hardware, and, optimization data analysis with post-processing tools to solve complex network issues. Bilingual (English/Spanish).

TECHNOLOGIES:

• LTE (Long Term Evolution)
• eCSFB (Evolved Circuit Switched Fall Back)
• Mobile WiMAX
• Technology 802.16
• Ev-DO Rev 0
• Ev-DO Rev A
• CDMA IS-95 and CDMA2000
• UE Device testing, validation and evaluation
• LTE Physical Layer
• WiMAX Layer 3
• Huawei EMS M2000
• Samsung LSM
• Samsung CDMA, CDMA2000 1xRTT and 1xEVDO Rev 0 and Rev A
• Samsung CDMA2000 Base
• Samsung Advanced MME and Advanced SAE-GW Integration
• Alcatel Lucent 1xEVDO Rev A Cell IntegrationPROPAGATION SOFTWARE Planet EVPROTOCOLS
• TCP/IP Protocol Family/Trace Analysis
• Some knowledge on BGP and OSPF
• Cisco Router Configuration/Programmin g
• Policy Traffic Switching
• PowerShell Scripting DOS Batch Scripting
• SQL Programming
• Mapping Software
• Microsoft Streets and Trips
• MapInfo Professional
• Microsoft Office
• Wireshark
• UNIX
• Agilent’s E74xx CDMA 2000 Scanner
• Agilent E6474A Nitro RF Test SW
• Agilent E6474A-NiXT CDMA 2000 Scanner
• Agilent’s E6450B
• Agilent E6450C
• Agilent W1314 NGR CDMA Scanner
• Grayson/Andrew Invex Chassis Scanners
• Xcellon Touchwave Bluerose
• XCAL-X
• XCAL-M
• DRTi and PCTEL RF Scanners
• Ascom TEMS
• Andrew Invex 3G
• Grayson Invex 3G
• Qualcomm QXDM
• Actix Analyzer
• Xceed Windcatcher Plus
• Xceed Windcather
• Xceed X-Stream

TECHNOLOGIES, VENDORS, TOOLS & PROGRAMMING LANGUAGES:

• LTE - E-UTRAN, EPC MME and SAE-GW | S-GW ( Confidential / Samsung)
• WiMAX - RAN (Motorola / Samsung)
• CDMA One and CDMA2000 (1xRTT and 1x Ev-DO Revision 0/A) - RAT (Samsung / Alcatel-Lucent)
• Mobile Virtual Network Operator (MVNO) / Multi Operator Core Network (MOCN)
• Element management systems & Operation and maintenance center tools (EMS / OMS, i.e. Samsung LSM, Nokia) for multiple vendors
• Wireless test and measurement tools: XCAL, TEMS, QXDM, etc.
• Bench / laboratory RF tools: Oscilloscope, Frequency counters, Spectrum analyzers, etc.
• Post-processing tools: NEMO Windcatcher & Actix Analyzer as well as any other
• Mapping (GIS) software: MapInfo Professional
• Sniffing software / tools: Wireshark
• ASP.NET, C#, C++, SQL, HTML 5.0, JavaQuery, Javascript, PowerShell 2.0 and DOS batch
• Programmable logic controllers (PLC)

PROFESSIONAL EXPERIENCE:

Confidential, BELLEVUE, WA

RF ENGINEER OSS | OSS SYSTEM REQUIREMENTS / TESTING / POSTPRODUCTION VALIDATION / PROJECT MANAGEMENT

Responsibilities:

• Performed impacts assessment for allocation of new projects LOE (Level of Effort) as part of cost management and cost estimation.
• Used heuristics as part of the analysis to ensure proper initial approximation of cost across different but similar projects as it applies for each project for objectives to be met by our team.
• Analyzed projects’ scope and requirements as well as supported team peers to include necessary documentation to complete initial assessment and delivering requirements as well as test results and resolution of failed test cases.
• Supported system requirements design for OSS systems to effectively parse/extract, transform and load required network information for service assurance and RF engineering from 4G RAN (Radio Access Network) Multi Band 5G NR (New Radio)/LTE/EvDO/CDMA2000 network
• Monitored and control projects’ objectives compliance by keeping a track of completed tasks and milestones in every project.
• Performed user acceptance test (UAT) cases as a pre-integration testing activity of new coding drop in laboratory test server GUI (Graphical User Interface)
• Upon end of testing phase in lab test server, supported and performed postproduction verification and validation of implemented code that may include changes accordingly with provided fixes as per tickets opened during UAT phase.
• Performed Confidential Adaptive Inventory (EAI) testing to check data is allocated according to pre-defined relations and associations defined in its relational database after data migration from former network inventory OSS system Netcracker Network Resource Manager
• Performed detailed and exhaustive parsing of data in order to perform such tests and qualify data appropriately to be migrated into EAI as well as management to drive data fallouts found after migration dry runs to resolution.

Confidential, Sacramento, CA

RF ENGINEER | LTE / LTE-A / CDMA VOICE AND DATA OPTIMIZATION

Responsibilities:

• Performed RAN troubleshooting and root-cause analysis based on daily monitoring of operational measurements counters including but not limited to connection drops (retainability), connection failure (accessibility), average physical throughput (integrity), X2 HO (handover optimization) and S1 HO (handover optimization)
• Use of RF propagation tools (i.e. Planet EV) for radio propagation to determine equipment and power configurations as well as optimal location, capacity, and optimization of system traffic to develop design standards to ensure system quality thus improving performance.
• Network system administration activities using element management systems (i.e. Samsung LMS) to maximize network performance and other basic aspects of a healthy operating system.
• Planning, evaluation, adaptation, and modification of engineering techniques assignments in, procedures and criteria.
• Analysis of retainability, accessibility, integrity, and mobility KPIs as well as handover optimization, and activation of new features like carrier aggregation
• Optimization of LTE parameters based on trending of KPIs and XCAL-M collected logs.
• Analyzed L3 signaling using XCAL-M to evaluate LTE RAN functionality thus identifying and correcting issues.
• Performed troubleshooting of complex issues using 3GPP technical specifications to understand functioning of X2 HO, protocol standards and RRC interactions as well as parameters. The result was the correction of a handover issue I was facing causing multiple drops across the market, raising call drops to 3% when the company’s top margin is 2%. Checking the TSG RAN2 TS 36.331 specifications the RRC message containing mobilityConfigInfo, we found out a timer that was expiring thus making the call drop then we had to look at the configuration of multiple target cell to make corrections.
• Performed neighbor list analysis, addition, and tuning (One-Way, missing, correction and removal)
• Performed UE/Mobile Device trace log analysis using Anite NEMO Windcatcher post-processing tool.
• Collected, setup and configured XCAL-M drive test tool to capture KPIs in collected logs to be able to perform a deep analysis of RAN issues as well as maintain performance of the RAN network.
• Troubleshooting of network issues and events of negative impact to the system (including but not limited to, connection drops, connection failure, etc.) covering all main KPIs using layer 3 signaling messages.
• Provided monthly reports of performance to upper management as to what changes were done and performance outcomes in that particular time frame.
• Performed system wide audits to correct and improve system performance and optimization of KPIs.

Confidential, BELLEVUE, WA

RF ENGINEER

Responsibilities:

• RF network deployment, commissioning, integration, cell site acceptance, maintenance, and upgrades networks (multiple network technologies, i.e. LTE / 5G / CDMA / WiMAX networks).
• Technical writing of methods of procedures for end-to-end commissioning, integration, and optimization processes including overall test plans for new features in the network.
• Developed integration and End-To-End optimization processes and standards for capture, report and analyze the following LTE Key Performance Indicators (KPIs) of network performance such as, but not limited to: Connection Setup Latency, Connection Success Rate, Intra and Inter eNB Handover Latency and Intra and Inter Handover Success Rate and Throughput Performance
• Established, validated and maintained golden test User Equipment (UE) device in a production laboratory environment to ensure accurate KPIs analyzing RF metrics and Physical Layer/Protocol Stack for a smooth and successful operation in the field and to developed standards and procedures.
• Created and debugged DOS Batch and PowerShell 2.0 programs/scripts to automate otherwise complex operations thus dramatically reduced field operations’ time-to-deliver
• Accomplished fast and successful integration of 5000 LTE Sites to customer’s network in 6 months λ Performed Uu and TCP/IP trace analysis and solved complex issues in the network during optimization and integration, and added secondary KPIs to further analyze the experience of the customer
• Developed, supervised and supported Cluster Optimization of LTE sites already commercially integrated to the network with successful optimization completion rate of 250 clusters per week.
• Regarded as an excellent performer with good presentation skills, trained Authorized Service Providers and independent contractors and facilitated full understanding of optimization operations to maximize test engineer’s performance.
• Excelled in root-cause analysis with field engineers for solution of complex issues λ Updated, maintained and supported WiMAX nationwide optimization operation for collection of KPIs: Network Entry Success Rate, Handover Success Rate and Latency, End-To-End System Latency and Throughput End-To-End (MAC Layer) Performance
• Tested and analyzed WiMAX and LTE test devices results out of the black box such as RF Metrics/Information Elements and protocol stack to certify ability to comply with customer’s KPIs’ thresholds in the in the lab as well as in the field using tracing tools to run several test cases to evaluate device behavior.
• Updated and maintained test device’ specifications to keep optimization drive test software in conformance with device chipset vendor latest specifications resulting in accurate stable KPI collection operation through the course of the optimization project.
• Debugged, updated, maintained and. added features as well, to RF test and post-processing tools to keep and improve quality and accuracy of Information Elements used for calculating KPIs.
• Researched, analyzed and troubleshoot issues in the network using Test Devices for a very stable optimization operation that led to cluster optimization of 5000+ WiMAX cells.
• Performed in-deep analysis of hybrid device’ Wi-Fi/WIMAX/1xEv-DO Rev A/1xRTT selection algorithm uncovering impact on network entry success/failure performance statistics.
• Excelled in root-cause analysis and troubleshooting.

Confidential, BELLEVUE, WA

PERFORMANCE RF ENGINEER

Responsibilities:

• Upgraded, updated and maintained End-To-End performance optimization processes and standards to capture WiMAX KPIs.
• Diagnosed, supported, mentored, addressed and solved field engineering markets’ optimization operation issues nationwide. Trained field engineers across U.S markets and facilitated full understanding of the performance and optimization processes.
• Supported Revenue Assurance Program as a key role player by analyzing network tonnage nationwide. Download/Upload traffic traces at the application layer level were captured in market’s test computer by specific test device and compared to tonnage counts for assurance of revenue to/from MVNO (Mobile Virtual Network Operator) network and ensure accurate billing of data usage Analyzed network performance issues using post-processing tools for detailed in-depth root cause analysis.
• Debugged, updated and maintained RF test and post-processing tools standards, procedures and resources for providing accurate metrics and Information Elements allowing field engineer to effectively troubleshoot issues in the network.