Security Clearance Level: Secret/Current NACLC Investigation

Summary: Accomplished Telecom Professional with extensive wireless experience looking for an opportunity to build a career in a challenging-collaborative Telecommunication environment, and people with innovative ideas willing to utilize my expertise. I am seeking to exercise my technical and leadership skills to effectively make contributions in Spectrum Management, Radio Planning, Design, Deployment, Optimization, Operation and Expansion of existing wireless networks. I am also seeking to provide Professional Engineering Services to leading equipment vendors, Government-Defense–Public Safety entities, and wireless operators in the globe, and help to develop/launch and optimize Next Generation Unified Communication Systems, including IP based High Speed Broadband Multimedia Networks.

 

Proven experience in Strategic Radio Planning/Design, Implementation and Expansion of wireless networks. Profound knowledge of TDMA, CDMA and OFDMA access techniques.  Expertise in LAB and Field testing and optimization of Communication Systems by performing modeling and simulation activities in 2G (GSM, CDMA and iDEN) systems as well as 3G/4G technologies, including CDMA2000/EVDO, WCDMA/UMTS, Long Term Evolution (LTE), VoLTE, Ultra Mobile Broadband (UMB), WiMAX 802.16 ], Wi-Fi 802.11xx and VoIP systems.

 

TECHNICAL SKILLS:

Mobile Telecom Environments: 2G, 2.5G GSM-GPRS-EDGE/iDEN/TDMA/CDMA, 3G-CDMA2000/1X-EVDO, P25-LMR, WCDMA/UMTS/HSPA, 4G-LTE, WiMAX, WiFi.

Network Elements: BSS, RAN, GERAN, UTRAN, HLR, VLR, MSC, OSS, Packet Core, Circuit Switch.

Fixed Network-Transport Environments: PSTN, ATM, Frame Relay, Access, Switching, Signaling, Management Systems, Core Network.

Next Generation Networks: EPS-IMS-SIP-VoLTE Integration, SDN-NFV, IP/MPLS.

LTE Network Elements: eNODE-B, e-UTRAN, EPC (MME, S-GW, P-GW, PCRF), HSS.

IMS: PCRF, CSCF, MGCF, MGW, AS, HSS.

WiFi Elements: BelAir-Ruckus-Cisco Access Points/Ruckus ZoneDirector, Cisco WLC, Cisco Catalyst 4900M, Cisco ASR 1004 (ISG/LI), Cisco ASR 1004 (NAT/VPN).

AREAS OF EXPERTISE:

·               Extensive consulting experience with Top US Wireless Operators in Tier 1 Top US markets including New York, Washington DC, Los Angles, Seattle, San Francisco, Chicago, Las Vegas, Charlotte, Detroit and More. Over twenty years of RF Experience in Mobile Wireless Sector with proven track record. Successfully served as an LCC Telecom Consultant for 8 years, 6 years with WFI as a Senior Principle engineer, and 7 years as an Independent Consultant.

·               17 years experience in area of Radio Spectrum Engineering/Management; Electro Magnetic Theory and Compatibility; RF Interference Detection, Prevention and Mitigation.

·               In depth knowledge of Propagation Theory and RF signals modeling, Link Budget Analysis, Coverage analysis and RF Interference Theory.

·               Hands-on experience in working diligently with cross-functional groups including Site Acquisition and Zoning Teams to select and assess candidate sites for viability and adherence to RF Design objectives.

·               Experienced in attending and testifying in Zoning Hearings with regard to standards governing RF safety compliance. Skilled in preparing site/antenna design configurations, and detailing site parameters to allow for rapid construction and equipment installation.

·               Practical experience with field measurements techniques, drive test data collection, drive test data analysis and Propagation Prediction Model Tuning procedures.

·               In depth-Hands-on experience with Wireless Systems Implementation/Integration, and RF Optimization through troubleshooting, systems drive testing and proper Parameters Selection and Tuning.

·               Practical experience with Telephone Traffic Engineering for Voice & Data services, and Capacity Planning to maintain a good network Grade of Service (G.O.S)

·               Hands-on experience with Manual and Automatic Frequency Planning (AFP) processes required to maintain acceptable C/I, SNR, CINR, and SINR to achieve optimal network quality and improved system performance.

·               Profound knowledge of BSS System Architecture and RF Subsystems including BTS, Node B, BSC, RNC MSC, eNode-B and EPC. Good understanding of the Fixed Network, Transport and Interconnect backhaul systems including call flow and routing through Iu-B, Iu-CS, Iu-PS, Iu-R interfaces using T1/DS1, T3/DS3, OC-n, ATM, SONET, TCP/IP Protocols as well as IMA configurations and SS7 Signaling.

·               Experience and strong knowledge in BTS/NodeB hardware including TX-RX-RAX Radios, RX-AIT, Couplers, Filters, Amplifiers (PA/MCPA/SCPA/LNA/TTA/TMA/MHA), Combiners(Hybrid/Cavity), Duplexers, Diplexers, Bias-T, RET, Connectors , Feeders and Antenna. Also, knowledge of e-NodeB, RRU and Fiber based Equipment.

·               Familiarity with FCC filing procedures and regulatory issues including Certification of telecommunications sites with FCC mandated RF emissions guidelines for human exposure as well as Airspace analysis to ensure compliance with FAA.

·               In-depth knowledge of GSM, iDEN and CDMA Network Performance Improvement (NPI) processes to optimize the system’s Key Performance Indicators (KPI).

·               Strong theoretical and practical knowledge of Motorola iDEN systems, Alcatel-Lucent CDMA systems , Ericsson-NOKIA-SIEMENS and Huawei’s UMTS & LTE systems and optimization.

·               Very good understanding of Alcatel-Lucent(ALU), Ericsson, NOKIA-SIEMENS(NSN) and Huawei’s LTE/HSPA equipment/Networks.

·               Knowledge and practice of OSS/OMSTAR, UTRAN/eUTRAN tools: Configuration Management, Performance Management, Fault Management, Radio Access Configuration tools, Optimizer, Reporter, MML commands, Prospect, Business Object and Optima. Familiarity with ALEX and HEDEX library systems.

·               Strong IP networking protocol knowledge and Solid understanding of TCP/IP, UDP, IGMP, QoS, IP Switching and Routing (Layer 2 & 3 protocols).

·               Deep knowledge of 802.11 protocol both at the physical and MAC layer. Solid working experience with 802.11a/b/g/n/ac standards in the 2.4 and 5GHz bands.

·               Hands-on Experience in developing and implementing Small Cells Solutions, including Femtocells, Microcells, Picocells and Metrocells. Deployed Repeater Systems using Bi-Directional Amplifier (BDA) and Donor antennas. Successfully enhanced Wireless service for various operators by deploying Fiber based i-DAS and o-DAS Distributed Antenna Systems using COMSCOPE/Andrew, Corning/Mobile-Access, Tyco Electronics/ADC/LGC, POWERWAVE, SOLID, RF WINDOWS and HUAWEI-AGISSON equipments.

·               Hands-on Experience wih planning, testing and deployment of Next Generation Networks (NGN), including LTE, EPC, IMS and VoLTE Integration.

·               Knowledge and practice of SDN (Software Defined Netwoks) and Netw oks Functionalty Virtualization (NFV)

 

 

 

 

 

 

 

 

 

PROFESSIONAL EXPERIENCE:

 

 

SAIC /ANC/OCTO/DC-NET                                                                                               Feb 2015 –Present

Office of the Chief Technology Officer - OCTO

Government of the District of Columbia                                                         

Lead Citywide In-Building RF Engineering and Testing Engineer

Responsible for the Citywide In-Building Wireless Performance Testing for 531+ District of Columbia Government buildings, as part of the Citywide In-Building Signal Enhencement Program to augment and improve Indoor Wireless Coverage within the District’s boundaries.

 

Major tasks involved the following:

·  Full responsibility in Citywide In-Building test planning, test execution, data acquisition/analysis. 

·  Conducting the site survey and testing process for Public Safety, Wi-Fi and Commercial Cellular carriers in the District, and Report generation for each survey.

·  Coverage/Service levels improvement through Distributed Antenna Systems (DAS) deployment for Public Safety LMR P25, and 3G-UMTS, 3G-CDMA and 4G-LTE for Commercial Cellular carriers.

 

Additional activities included:

·  Citywide In-Building Wireless Distributed Antenna Systems (DAS) Deployments, including Systems Designs utilizing IB-wave DAS software for small, medium and large complex campus and Corning Mobile Access Neutral Host solutions.

·  Working with vendors through the Installation, testing and commissioning of DAS RF repeaters and Public Safety BDA products.

·  4G-LTE Technology Assessment, Evaluation and in relation to Public Safety and future FIRSTNET deployment

·  Citywide RF Engineering Support with regard to FIRSTNET

·  Citywide New Technology Innovation Initiatives

·  Test Tools Equipment Acquisition, Evaluation, Testing  and Deployment

·  Equipment Vendors Assessment and Evaluation

 

Alcatel-Lucent /  Sublime Wireless                                                                                       June 2014 – Dec 2014                                    

Sr. 4G-LTE/ 3G-CDMA/EVDO Optimization Consultant.                                        

Pre-Launch & Post Launch Optimization in SPRINT’s South Markets

 

 

● Sr. 4G-LTE/ 3G-CDMA/EVDO Optimization Consultant responsible for Performance investigation and characterization of SPRINT’s  Multi-Band 4G-LTE/CDMA 1X-EVDO networks in various aspects ranging from EPC-Core, eNode-B, RAN, User Equipment and subsequent Voice/Data applications. Contributive Member of the Performance Improvement Team responsible of the Pre-LaunchTesting and Post Launch Optimization of The Multi-Bands/Multi technology clusters in the South Markets, which included South Carolina, Georgia, GA-SC Coast and Myrtle Beach.

 

● Investigative E2E(end to end) performance of CDMA/ LTE networks with emphasis on verifying proper integration and interworking between Intra/Inter 3GPP and 3GPP2 networks. Drive Test based Troubleshooting involving the use of various complex data collection and post-processing tools (JDSU-TEMS-eDAT) to verify and assess the combined performance of CDMA/LTE networks. Parametric and Statistical based Optimization through the use of various platforms(NPO, Transcend, YOHO, NCV, SAM ) to fine tune the 2 networks.

 

● ALARMS review and clearing; Golden Parameters audit and alignment; STATISTICS/KPI trending review and Analysis used as a basis for identifying and proposing solutions to address root cause problems such as Access Failures, Call Drops, Low DL-UL Throughput, RTT lengthy delays, and other critical deficiencies within the network. Further work activities for specific clusters involved making Parameters and Tilts recommendations to reduce interference, improve coverage, increase throughput, and ultimately turning all Essential KPIs “GREEN” within each released cluster, before subsequent submission to SPRINT for final review and approval.

 

 

T-Mobile Washington-Baltimore Market /  NEXTGEN Global Resources

Sr. 4G-LTE & VoLTE Deployment Consultant.                                                   March 2013 – June 2014

4G - LTE Pre-Launch & Post Launch Optimization

LTE e-RAN – EPS & IMS Integration

VoLTE - IMS - SIP Testing and Optimization

OEM - Equipment Vendor: Ericsson

 

 

● Sr. VoLTE Testing and Performance Engineer, responsible for Pre-launch and Post Launch of VoLTE (Voice over LTE) Services in the Washington-Baltimore market (2014). Conducted End to End System testing and Network Performance Optimization activities in preparation of the VoLTE Deployment throughout the market.

·  Worked in conjunction with the Regional and National Engineering teams to deploy, Test and successfully activate VoLTE related features, which included DRX (Discontinuous reception), RoHC (Robust Header Compression), VoLTE Packet Prioritization through QoS and QCI, Semi Persistent Resource allocation for VoLTE calls through eNoDE-B Dynamic Scheduler, as well as Link Adaptation and HARQ / TTI Bundling to impact Packet Loss and reduce RTP Payload Delays.

·  Conducted a successful VoLTE/LTE Parameters audit and verification to ensure full and proper parameter configuration and integrity for both LTE/VoLTE as well as all newly activated features within the OSS.

·  Successfully conducted a Full Scope Protocols Analysis IMS-SIP-VoLTE and all 3GPP Layers, and effectively monitoring and managing End to End VoLTE Calls and correlating Control Plane and user Plane.

·  Conducted a Multi-Dimensional Analysis of MAIN KPI Metrics through a Summary Report and a Real Time Visibility and geographic analysis of the overall performance of the Network. Quickly identify the magnitude of having the most significant impact on specific KPI being assessed and evaluated and further conducted an impact Analysis and detailed diagnostics of the Network to quickly and accurately characterized root cause of VoLTE Performance related problems.

 

·  Conducted a Multi-dimensional analysis for prioritization of issues having the greatest customer impact. KPI analysis for effective triage and fault isolation. Drill down, integrated and detailed diagnostics for Root cause Analysis and further troubleshooting.

·  End to End Packet Testing Analysis for VoLTE Calls flowing through the  E-UTRAN and Evolved Packet  Core Nodes and interfaces, including RRC, NAS, S1-MME, S1-U,  EPC (S5/S8 GTP-based), SGW, PGW, S6a, S11, Rx, N, Gn/Gp, Gb, Gr, Gx, Sy, Rx.

·  Verified and optimized the unified LTE/IMS/VoLTE Service through End-To-End Testing and troubleshooting of the various Signaling and Traffic Protocols involved in the process, including SIP, DIAMETER-RADIUS, DNS, RTP-RTCP, H323.

·  Conducted VoLTE Voice Quality Test (R-Factors MOS Call Quality that combines Packet Loss, Jitters and Delay from RTP to ensure the accuracy of Voice quality throughout the call.

·  Conducted Real Time Measurement and Testing for High Definition Wideband (HD WB Voice & AMR-Codec) with the SAMSUNG Garda SH-T339 LTE/HSPA/UMTS/GSM, and generated associated POLQA (Perceptual Objective Listening Quality Analysis) Assessments SCORES through TEMS Drive Test Data and Actix ONE Post processing.

·  Conducted Troubleshooting activities to address Failures and  issues related to e-NODE-B, EPS & IMS Nodes, which included HSS, PCRF, P-CSCF, I-CSCF, S-CSCF, AS, PDN, MGW, MGCF along with associated IP Protocols including Diameter, SIP, RTP, RTCP, UDP, etc…

·  Successfully tested the Mobile’s Way to SIP (Session Initiated Protocols) METHODS, i.e.: REGISTER, SUBSCRIBE, NOTIFY and other SIP and CODES involved in VoLTE sessions, including Signaling and negotiation of voice preferences, Default/Signaling/Dedicated Bearers assignments throughout the IP Multi Media System(IMS).

·  Analyzed VoLTE Drive Test data collected with TEMS, generated a Summary VoLTE KPI Report which included the following metrics: VoLTE Call Setup Success Rate, VoLTE Call Drops, LTE SRVCC Handover to UMTS, LTE Redirection to UMTS, VoLTE POLQA Scores DL/UL, VoLTE RTP Packets Loss, VoLTE Jitters, and all other related SIP events Successes/Failures, including SIP-REGISTER, SIP-INVITE, SIP- ACK, SIP-BYE, SIP-PRACK, Demodulation and Resource Block Allocation Analysis.

·  Prepared TILTS and parameters recommendations to help eliminated VoLTE Access Failures /Drops, Jitters, Packet Loss, Low POLQA Scores, etc…so to improve the overall performance of the newly deployed VoLTE Service in the market.

·  Proactively identified and resolved issues and problems having the greatest impact with regard to the overall LTE and VoLTE experience of T-Mobile's customers in the Greater Washington-Baltimore market.

 

● Sr. 4G-LTE Testing and Performance Engineer, responsible for Pre-launch and Post Launch of The LTE Optimization activities in the Washington-Baltimore,  Hampton Roads, Norfolk and Virginia Beach markets (2013 – 2014). Conducted  System testing and Network Performance Optimization in fully deployed LTE clusters in preparation of the T-Mobile commercial launch of 4G-LTE cellular services in the aforementioned markets.

 

·              Analyzed T-Mobile’s performance requirements, and developed benchmarks, test plans and test cases to validate each of the defined Key Performance Indicators (KPI).

·              Acquired all drive test equipment, including TEMS and Samsung UE’s and other means of measurement to identify and isolate root causes for performance degradation and existing bottlenecks in the LTE network.

·              Conducted all optimization activities network optimization to improve customer experience, with a strong emphasis on network Accessibility, Call Retain ability, Mobility Management, Session Management, X2/ S1 Signaling, PS and CSFB Calls, and Inter-Radio Access Technology (IRAT) handovers (LTE to HSPA and HSPA to LTE).

·              Analyzed TEMS data looking at performance metrics figures such as PUSCH/PDSCH Physical & RLC layers Throughputs, MCS( Modulation and Coding Scheme), Rank indicator(RI), CQI, HARQ, RB Usage, PUSCH/PDSCH BLER and RACH Initial TX Power; all in relation to RSRP, RSRQ, CINR and MIMO performance fluctuations in various parts of the defined clusters.

·              Led the troubleshooting efforts by running multiples diagnostics on 4G Radio Access Network which helped to indentify and fix problems in the field during LTE Network Testing. This included addressing issues in less than desirable Throughput, Latency Delays, and Packet Loss, PS Dropped calls, CSFB voice calls successful completion and 3G HSPA/4G-LTE IRAT Handovers. Analyzed drive test data and call trace logs collected through network analyzer and probes/taps throughout the network in order to determine the root cause of KPI failures issues in relation to 3GPP specifications.

·              Tested and managed effect of RAN performance parameter changes. Communicated major road blocks T-Mobile. Provided technical support to ensure successful issue resolution with T-Mobile.

·              Conducted Detail analysis of all radio parameters, analyzed LTE network traffic and Capacity, and Developed test plans to evaluate new features and determine optimum translation settings.

·              Troubleshooted isuues related to DL/UL LTE to UMTS Traffic Leakage, identified Top Offenders Cells and provided recommendations for mitigation through proper LTE and UMTS mobility parameters re-allignment.

 

AT&T Mobility, Denver, CO / Solutelia Inc.

Senior In-Building Solutions Consultant                                                           October 2012 – March 2013

ASG – ISE Indoor/Outdoor DAS Engineering UT, CO, AZ, NM

Equipment Vendor: Andrew/Comscope – Corning/Mobile Access – Tyco Electronics/ADC-LGC

 

Senior In-Building Systems Consultant, member of the AT&T’s Antenna Solutions Group (ASG) responsible for Small Cells Technologies and In-Building DAS Systems designed to enhance the Voice/Data coverage and Capacity in high traffic venues throughout AT&T’s Wireless Network in the States of Utah, Colorado, Arizona and New Mexico.

·               Successfully led the Planning Deployment and Optimization efforts for multiple Small Cells and In-Building projects in the region for Enterprise Venues, Vertical markets, including, Healthcare, Universities, Stadiums through coverage improvement and capacity driven Microcells, Picocells, Femtocells, Metrocells, Dedicated and Neutral Host Indoor and Outdoor Distributed Antenna Systems (DAS ).

·               Conducted the Design phase DAS activities including Site Survey, Initial Site Walk Test with TEMS Pocket HTC, iBWAVE predictive simulations and subsequent System’s Dimensioning.

·               Carefully selected RF and DAS equipment, generated the Link budget for each antenna, and prepared the corresponding Plumbing/RFDS diagrams to be used in deployment phase.

·               Assembled the Build of materials (BOM) package, and worked in coordination with CE (Construction Engineering) Team during the Construction phase activities, including equipment Installation, Commissioning and Integration.

·               Coordinated the RF Validation of DAS projects including Link Budget approval, Antenna Validation, Parameters Reviews, and NL Audit and Integrity.

·               Led the DAS RF Optimization through the Conditional Acceptance Process by fine Tuning the DAS System’s gains and required attenuations to balance the system, establishing proper Link Budgets and mitigating PIM and Interference. Performed analytical and investigative studies with regard to Parameters changes, UL RSSI and Noise Rise, CPICH adjustments and UL/DL power adjustments.

·               Accessed and analyzed systems performance and diagnostic metrics including Call Accessibility, Retainability    and PC Data Throughput, and their supporting statistical data and logs from various infrastructure nodes using the OPTIMA Statistical Tool, therefore compiling  the most effective KPI functionality in the market, which enabled a complete understanding of the current and past performance of the DAS wireless network.

·               Completed DAS projects in hotels, resorts and stadiums venues, which contributed in enhancing coverage, improve quality of service, reduce churn and increase revenue in the markets.

 

T-Mobile USA Headquarters, Bellevue, WA / NEXTGEN Global Resources

Senior 4G-LTE Consultant                                                                                                July 2012 – Sept 2012

Network Evolution and Strategy

Equipment Vendor: Ericsson – Nokia-Siemens

 

Senior 4G-LTE engineer member of the Network Evolution and Strategy Group responsible for Benchmarking the 4G-LTE network, and developing the LTE optimization Guidelines, Test Cases and Procedures to be deployed in various T-Mobile US markets.

·                Conducted System testing and validation in fully deployed LTE clusters in Bellingham, WA and Concord, CA in support and preparation of the T-Mobile commercial launch of 4G-LTE cellular services. Coordinated the engineering efforts in relation to developing, conducting and maintaining a test and analysis environment suitable to execute essential tasks to optimize RF clusters in defined areas respectively using NOKIA-SIEMENS and ERICSSON RAN equipments.

·               Analyzed T-Mobile’s performance requirements, and developed benchmarks, test plans and test cases to validate each of the defined Key Performance Indicators (KPI).

·               Acquired all drive test equipment, including TEMS and QXDM,  ZTE and Huawei data cards, and Nokia/Samsung UE’s and other means of measurement to identify and isolate root causes for performance degradation and existing bottlenecks in the LTE network.

·               Conducted all optimization activities with a strong emphasis on network Accessibility, Call Retain ability, Mobility Management, Session Management, X2/ S1 Signaling, PS and CSFB Calls, and Inter-Radio Access Technology (IRAT) handovers (LTE to HSPA and HSPA to LTE).

·               Analyzed TEMS data looking at performance metrics figures such as PUSCH/PDSCH Physical & RLC layers Throughputs, MCS( Modulation and Coding Scheme), Rank indicator(RI), CQI, HARQ, RB Usage, PUSCH/PDSCH BLER and RACH Initial TX Power; all in relation to RSRP, RSRQ, CINR and MIMO performance fluctuations in various parts of the defined clusters.

·               Led the troubleshooting efforts by running multiples diagnostics on 4G Radio Access Network which helped to indentify and fix problems in the field during LTE Network Testing. This included addressing issues in less than desirable Throughput, Latency Delays, and Packet Loss, PS Dropped calls, CSFB voice calls successful completion and 3G HSPA/4G-LTE IRAT Handovers. Analyzed drive test data and call trace logs collected through network analyzer and probes/taps throughout the network in order to determine the root cause of KPI failures issues in relation to 3GPP specifications.

·               Tested and managed effect of RAN performance parameter changes. Communicated major road blocks T-Mobile. Provided technical support to ensure successful issue resolution with T-Mobile.

·               Conducted Detail analysis of all radio parameters, analyzed LTE network  traffic and Capacity, and Developed test plans to evaluate new features and determine optimum translation settings.

·               Conducted The Samsung Galaxy Device Testing to mimic user’s experience under varying RF conditions, including Stationary and Mobility Testing in STRONG, MID and POOR RF environments.(based on RSRP, RSRQ, CINR and CQI Levels).

·               Conducted UE device testing for Samsung Galaxy, performing under IP, FTP, HTTP and UDP protocols for Web Browsing response time, File Upload/Download speeds, U-Tube Video Streaming reliability, PANDORA Radio listening consistency, SKYPE Telephony voice quality, etc…Processed data and generated performance statistics and results to be presented to upper management.

·               Developed the 4G-LTE Technical Guidelines to ensure that all  optimization methods and procedures are followed correctly, and optimization plans are implemented in line with T-Mobile’s specific goals and objectives.

 

 

Time Warner Cable (TWC) Headquarters, Herndon, VA /

Senior Quality Assurance Testing Engineer                                                          April 2012 – July 2012

National Public WiFi Network Deployment 802.11(a,b,g,n / 2.4GHz & 5GHz)

Equipment Vendor: BelAir-Ruckus-Cisco

 

Senior Testing Engineer, member of a collaborative Quality Assurance team responsible for the End to End testing of The Time Warner Cable Public-Community Access, designed to enhance the customer experience, improve data transport economics by off-loading from 3G/4G partner networks, and expanding wireless coverage to all subscriber devices, and leverage this network asset to gain broader coverage across partner networks,  which resulted in the successful delivery of quality Wi-Fi products and services to TWC customers using associated Wireless Client platforms including Windows XP, Windows 7, MAC OS 10.6, iOS 5, Android 2.x , etc…

 

Supported the Design, deployment, configuration, testing, troubleshooting and debugging of the WiFi network whose Architecture consisted of several modules including the The Access Network ( Access Points plus the underlying backhaul transport (DOCSIS, Ethernet, PON, etc.), along with supporting controllers and tunnel terminations), The Aggregation module which aggregates all of the Access Networks onto a common routing and switching platform, The Subscriber Policy Management/Enforcement and Control supported in the AAA, LDAP Schema designed to manage all subscribers and device relationship, and The Content Network which is the ultimate destination for which the WiFi user has purchased the service.

 

·               Identified business testing requirements. Developed and advocated a test strategy which emphasized Wi-Fi Protocol testing and QA testing standards and processes in support of wireless products and services to be delivered via Wi-Fi radios and a core network, including Functionality, System, Regression, Acceptance, Stress, Performance and Scalability Requirements.

 

·               Supported the deployment, testing and acceptance of BelAir, Ruckus and Cisco Access Point as essential part of the WiFi infrastructure to support wireless products and services to be delivered via Wi-Fi. Designed and configured Core IP infrastructure to test the new Access Points which  included qualification of Wi-Fi Core network elements comprising the AAA, LDAP, Load Balancers (A10), and Cisco based routers, aggregators and ISGs.

 

·               Integrated Wi-Fi access point radios and the core network elements with the Cisco ASR 1004 running the ISG and the Lawful Intercept feature set , Cisco ASR 1004 running the Network Address Translation (NAT) and IPSec / VPN features, Cisco 7201 (LNS) running L2TP features, DHCP servers delivering TFTP / SNTP/ DNS and Cisco Catalyst 4900M switching fabric aggregating the entire Wi-Fi complex. 

 

·               Developed a testing strategy and a test plan, emphasizing on end to “Core” network elements to verify Remote Authentication Dial In User Service (RADIUS) message stack, Subscriber Policy Management supported in the AAA, LDAP Schema managing the subscribers and device relationship, and the Load Balancers providing an even distribution of authentication traffic across all the AAA to prevent and protect against authentication storms. Reconfigured AAA, Load Balancers and OMA-DM platforms from the Mobile Network Core – MCN1.0 to support Wi-Fi Access Point features and services.

 

·               Executed test cases/scripts using networking tools VeriWave, Chariot, Iperf any traffic generators, wireless monitors, Adept WFA, AP-tester and Wireshark, and accurately & concisely reported both progress and defect status. 

·               Conducted IP Layers Analysis and network protocol layers assessment using network analysis tools such as Sniffer, EtherPeek, EtherReal, OmniPeek, Airopeek, and Wireshark.

 

Huawei Technologies, Toronto, Canada / Kineticom Canada

Lead LTE Deployment and Optimization Engineer                                                     October 2011 – April 2012

4G R8-LTE PROOF of CONCEPT/Acceptance Testing & Service Delivery for Bell Mobility in Canada

Equipment Vendor: Huawei

Prime 4G-LTE engineer responsible for planning, monitoring and supervising the work product of a team of RF engineers conducting and validating the Bell’s PROOF Of CONCEPT project throughout various markets in Canada, in support of the Bell Mobility commercial launch of 4G-LTE cellular services.

Led and coordinated all engineering efforts in relation to developing, conducting and maintaining a test and analysis environment suitable to execute essential tasks to optimize RF clusters in POC defined areas throughout Canada. Supervised a team of RF Engineers, Optimization Engineers, and Drive-Testers throughout the LTE deployment and optimization process including design and review of the LTE network, LTE Sites (Enode-B) Integration, Single Site Verification, Cluster Optimization, and LTE network launch. Ensure that Optimization Methods and Procedures are followed correctly, and optimization plans are implemented in line with Bell’s specific guidelines and objectives.

·               Analyzed customer requirements, and developed benchmarks, test plans and test cases to validate each of the 53 defined Key Performance Indicators (KPI) in the MOU.

·               Acquired drive test(NEMO-PCTEL-UE’s) and Analysis(ACTIX, Windcather) tools and other means of measurement to identify and isolate root causes for performance degradation and existing bottlenecks in the LTE network. Conducted spectrum clearance activities, prepared drive test routes and participated in e-NODE-B Call-P and integration testing, and ensured all entrance criteria were met before start of optimization activities.

·               Reviewed and analyzed network elements, validated the interfaces, and conducted end-to-end LTE integration and testing of network elements, including functionality and interoperability of EPC/eNB/UE interfaces(X2,S1), mobile devices, eNodeB’s, MME’s, S-GW, P-GW, HSS/HLR, PCRF and routers.

·               Led the troubleshooting efforts by running multiples diagnostics on 4G Radio Access Network which helped to indentify and fix problems in the field during LTE launches throughout several markets in Canada. This included addressing issues in Throughput, Latency Delays, and Packet Loss, PS Dropped calls, CSFB voice calls and 3G HSPA/4 G-LTE IRAT Handovers. Analyzed Drive data, logs call traces collected through network analyzer and probes/taps throughout the network in order to determine the root cause of KPI failures issues in relation to 3GPP specifications.

·               Recommended applicable network changes in Data fill (Parameters, Antenna Tilts, Azimuths modifications, etc…) in order to improve areas with poor RF performance (RSRP, RSRQ, SINR, CINR, Throughput, etc…).

·               Monitored KPI‘s before and after configuration changes. Supported new LTE site planning and cell site build configurations.

·               Conducted Pre-Commercial launch Optimization activities with a strong emphasis on network Accessibility, Call Retain ability, Mobility Management, Session Management, X2/ S1 Signaling, PS and CSFB Calls, and Inter-Radio Access Technology (IRAT) handovers (LTE to HSPA and HSPA to LTE).

·               Ensured all optimization work met agreed-upon Key Performance Indicator (KPI’s) criteria by launch date as scheduled with Bell Mobility.

·               Conducted end-to-end 2.6 GHz LTE field trials including Inter frequency Handovers from the AWS to 2.6 GHz bands.

·               Participated in discussions with regard to LTE KPI definition and calculation formulae in ACTIX and WINDCATCHER. Interfaced with engineers from vendors (NEMO, PCTEL and JDSU) to support the LTE Acceptance testing program.

·               Optimized an integrated 4G LTE Radio system on the AWS spectrum and ensured successful interoperation with 3G-UMTS and partner’s wireless networks ecosystems.

·               Tested and managed effect of RAN performance parameter changes. Communicated major road blocks with internal customers as well Bell Mobility. Provided technical support for Proof of Concept Acceptance testing, and ensured successful issue resolution with Bell Mobility.

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CELCITE Management Solutions - Nextel International Holdings (NII), Reston, VA
Senior Engineering Consultant                                                                             October 2010 – October 2011
3G UMTS (R5-R6-R7 HSPA+) Planning and Deployment in Latin America: Mexico, Brazil, Chile & Peru.

Equipment Vendor: Huawei

·               Served as a Senior Wireless consultant and conducted large scale, mobile network planning & deployment projects in various Latin America countries, including Mexico, Brazil, Peru & Chile to meet the Wireless data growth trends, offering customers faster call setup time along with robust high speed data capabilities. In this major undertaking, assessed the introduction of new technology into large network environments, while focusing on broadband-centric High Power PTT (Push-To-Talk) applications to deploy a common converged mobile network that will strengthen 3G-UMTS services and enhance its 4G-LTE technology transition options. Within the same framework, used fundamental knowledge of wireless technology and Cutting-Edge Network Evolution Plan to bring financial benefit to NII by reducing deployment costs, but also by avoiding future expenses as wireless data traffic continues to grow.

·               In this process, developed the UMTS design process and related KPI’s, analyzed, and reviewed 3G technical requirements such as Link Budget including R99 CS, PS, HSDPA, HSUPA, RAN capacity and dimensioning using traffic mix (R99, CS, PS, HSPA), and interference analysis.

·               Reviewed, analyzed, and validated third party vendor designs, including model calibration, coverage, capacity, and interference analysis.

·               Assessed, analyzed, and validated Network Performance KPIs for on air 3G UMTS networks. Ran, audited and validated proposed 3rd party vendors (Huawei & NSN) RF designs using the Atoll RF planning tools.

·               Performed vendor Management for 3rd party RF designs deliverables. Provided frequent high level and low level status reports documenting work progress. Reviewed and documented 3G RF design guidelines, processes, and procedures.

·               Leveraging project management skills, successfully built positive and productive relationships across cross functional project teams RAN/BACKHAUL-TRANSPORT/CORE & VENDORS, and adapted to an ambiguous and changing environment while successfully managing multiple variables impacting the project.

 

LCC International - AT&T Mobility                                                                             March 10 – October 10

Senior Wireless Engineering Consultant

4G LTE Deployment/3G R5-R6-R7 UMTS Growth & Expansion for AT&T Mobility, Boston, MA

Equipment Vendor: Ericsson

·               Served as the Senior RF Engineering Consultant, member of a collaborative and multidiscipline RAN engineering team responsible for the AT&T’s 4G LTE Deployment/3G UMTS Growth & expansion projects (GSM/UMTS/LTE platforms) in New England with the objective to offer customers seamless, robust, high speed data capabilities throughout the market. Our wireless footprint covered the states of Massachusetts, Rhode Island, Connecticut, New Hampshire, Maine and Vermont. Participated in the design, test deployment and implementation of 1st, 2nd and 3rd UMTS Carriers throughout the aforementioned states by conducting propagation modeling and Monte Carlo simulations activities in Atoll, and by analyzing, documenting and briefing the results to local upper management as well as The RAN Team at the AT&T’s National Headquarters. Also, conducted the RF design process for UMTS expansion in new areas throughout the region, including cluster definition and network dimensioning/configuration for optimum Radio Network functionality. In addition, generated and studied all essential ATOLL’s simulations reports and Prediction maps, and identified and addressed existing issues in problem areas in terms of RF coverage, interference, areas of poor throughput, pilot pollution, etc... Further responsibilities included participating in scoping meetings with cross functional teams, preparing RFDS and generating RND-CIQ for NSB’s (new site built) and planned 2nd and 3rd carrier sites. Coupled with my main activities, I led the acceptance process of Newfield’s optimized Propagation Prediction Models operating both in the Cellular and PCS bands. In this process, carefully reviewed all important parameters and metrics within all 18 models, including Sigma, Mean error, standard deviation, Slope, Intercept and clutter losses. Leveraged 19 years of wireless experience and carefully compared prediction signals against actual drive data before formally accepting the models.

·               Served as a part of the LTE Regional project, participated in the Atoll LTE Design Workshop which offered presentations and discussions about the overall LTE Design and Engineering process which also included Site selection, Design Polygon/ Cluster/Super Cluster Definition and LTE Naming Standards. Further activities included setting up Configurations in Atoll, producing and scaling LTE Traffic Maps, running LTE Monte Carlo Simulations, and generating subsequent Prediction Studies and Statistical Reports. A special emphasis was made on evaluating  Key Performance Indicators such as RSRP, RSRQ, pilot dominance, overlapping areas, RLC, User Throughput, etc…. As far as LTE interference, MediaFLO™ was highlighted, particularly its impact when operating near LTE Transmitters. Carefully reviewed available hardware form approved lists; Assessed hardware sharing impact among various technologies, and selected Dual Broadband 700/850 MHz and PCS/AWS Quad Ports Cross-Polarization antenna  to simultaneously support the 700 MHz LTE/850 MHz GSM Cellular, the GSM-UMTS in the 1900 MHz band, GSM and LTE in the AWS band. Generated LTE traffic maps, and worked on the Proxy designs and Atoll simulations for LTE clusters in the New England markets.

 
 

Solutelia, Inc. AT&T Mobilty                                                                                     Dec 2008 – February 2010

Senior Wireless Engineering Consultant

3G R5-R6 UMTS Growth & Expansion- Network Planning Design and Deployment for AT&T Mobility, Minneapolis, MN. Equipment Vendor: Alcatel - Lucent.

·               Served as the Radio Access Planning Engineer responsible for the design and deployment of the UMTS network in the MNP market, which included the states of Minnesota, Iowa, Nebraska and part of Wisconsin.  RF Consultant responsible for ensuring that the 3G UMTS Design meets the design guidelines and Key Metrics set forth by AT&T and Alcatel-Lucent. Facilitator of the RF design process through interfacing with Alcatel-Lucent, validating potential candidates sites, selecting proper Radio equipment and antenna systems, and deciding on optimal cell placement within the UMTS network. This Broadband High Speed Alcatel-Lucent Multimedia Network design project included both Portfolio Driven Greenfield & Expansion UMTS Clusters, as well as Success Driven Capacity Overlays and Multi Carrier clusters.  

·               Designed and implemented a complex 3G Dual-Band (850/1900 MHz) UMTS radio systems as specified in the AT&T & Alcatel-Lucent Key Performance Metrics requirements which involved several Node-B’s, and Distributed Node B’s, half a dozen ALU9370/ALU5200 RNC equipment as well as other custom  peripheral subsystems. The main focus of responsibilities included UMTS Polygons definition and site selection; Preliminary RFDS, Propagation Models, Clutter weights and Traffic (R99/HSDPA ) preparation from DVCF; Atoll Project Built and parameters update; Monte Carlo Simulation analyses in Atoll; manual and ACP optimization; PSC, Neighbor list and CIQ-Cell ADD Template creation; complete PICD/DFCD preparation;  and conducting Regional/ALU design Acceptance reviews. Implemented actual deployment and prepared as-built RF Data Sheets documentation. Prepared T1 count for IuB Interface. Provided Network Deployment support to associated contractors. Participated in national RF Technical Review and Approvals. Conducted weekly meetings and regular discussions with customers, consultants, vendors and other company personnel as necessary to advance projects. Analyzed and prepared and recommended new broadband antenna configurations in preparation to the 700 MHz LTE, 850 MHz GSM and 1900 MHz UMTS overlay deployments.

 

3G R5-R6 UMTS Growth & Expansion - Network Planning Design and Deployment For AT&T Mobility, Roanoke, VA. Equipment Vendor: ERICSSON.

·               Served as the 3G Network Planning Engineer responsible for the Design and Deployment of the UMTS network in VA and West VA.  Key RF P.O.C responsible for ensuring that the 3G UMTS Design meets the design guidelines and KPI set forth by AT&T. Facilitator of the RF design process through interfacing with Ericsson, validating potential candidates sites and deciding on optimal cell placement within the UMTS network. 

·               Assessed and accepted several propagation models through review of the complete Model Tuning Process in Atoll.  Assigned newly tuned models to each UMTS cell in the design. Compiled Site Audit information and prepared RFDS design configurations for individual UMTS sites. Participated in scoping meetings Prepared a Nominal Design for the market after conducting a thorough Database integrity and verification in Atoll.  Ran all required propagation predictions and Monte Carlo Simulations in Atoll. Conducted Design Optimization in ACP in order to determine final Antenna down tilts required to meet AT&T’s Design KPI’s.

·               Planned and coordinated all Design Reviews with Ericsson for final approval. Kept Atoll Project up to date throughout the Post Acceptance activities (i.e.: Antennas changes, Sites Replacement, etc...)  - Coordinated Design Changes with Ericsson – Prepared CIQ (Customer information Questionnaire) for Ericsson.

·               Successfully prepared the Intra-Frequency & IRAT Neighbor Lists to be downloaded in the switch. Designed the UMTS Scrambling Code Plan.  Evaluated Final UMTS Design Overlay for all clusters and generated specific design configurations for all overlay sites identified in the design process.

·               Documented and released notes of vendor’s UMTS design to include issues, concerns, improvements and changes required to enhance the UMTS Design network. Worked with local RF Team in carving and clearing the 6.2 MHz spectrum required for UMTS deployment. As a Senior wireless Consultant on this project, demonstrated dynamic leadership and astute judgment for my client AT&T, thereby providing firm guidance and positive direction in fulfilling the mission of planning, designing and deploying a cost effective and well performing UMTS network in The South Western region of Virginia which included the Blacksburg-Virginia Tech, Harrisonburg-James Madison University and Lynchburg-Liberty University areas.

Aircom International – ERICSSON                                                                                       June 08 – Dec 08

Wireless Engineering Consultant
3G R5-R6 UMTS/OSS OPERATION & MAINTENANCE-UTRAN OPTIMIZATION for AT&T, USA Equipment Vendor: ERICSSON

2^nd UMTS Carrier Deployment:

·               Served as the key UTRAN-UMTS Optimization Engineer towards AT&T market and network rollout for the 2nd Carrier Deployment. Reported the work progress and performance improvement to The AT&T. Managed the activities/schedule of the project.

·               Provided the necessary information to Central Office, including ensuring that the DT files are loaded into the server. Provided information on cluster readiness. Updated work schedule and site changes based on feedback from local markets. Attended meetings with AT&T and Project Management, and coordinated special requests from the client.

·               Coordinated special venue testing, and developed special troubleshooting plans for field tests. Reported KPI results to AT&T Regional and HQ teams, and discussed performance problems as well as presenting recommendations in relation to cluster performance.

·               Conducted pre-defined processes, including consistency checks, neighbor analysis, DT files analysis from TEMS and Agilent, based on output from Omega, and preparation of GnG reports. Conducted ACP studies in order to decide on tilts adjustments. Reported on clusters KPIs and performance improvement according to templates.

Areas of focus:

·               Ericsson UTRAN OSS/P5 as well as 3GPP UTRAN protocols including RRC, NBAP, RNSAP, AAL2, RANAP within the Iu and Iur links.

·               Network audit, RAN fault finding/assessment, and Alarm detection/handling as well as problem escalation processes.

·               UE Performance issues in relation to transport/Core Network.

·               OSS RNC/RBS configurations and system integration.

·               Business Object and KPI Monitoring / Trending

·               RANOS/OSS-RC and UTRAN software upgrades/troubleshooting.

·               EMAS/MOShell modules, Ericsson RNC-RXI-RBS inter-working and OSS configuration.

 

Post Launch Optimization:

Key ERICSSON RAN P5 & OSS RC5 Point of Contact responsible of the day-to-day operation, maintenance/supervision and performance of the commercially launched AT&T 3G UMTS network. Daily activities included conducting overall network reviews; defining, optimizing and reporting on cluster network performance, allowing AT&T to deliver best service with best NETWORK ACCESS, good CALL RETAINABILITY and optimum Data THROUGHPUT to the UMTS R99 & HSDPA end users. Analyzed Drive Test Logs for drop calls, blocked call, access failure, Handovers, SHO, IRAT HO failure, HSDPA throughput (Layer 3 messages). Reviewed and analyzed Layer 3 RRC-Radio Resource Control protocol using Agilent Nitro, TEMS Investigation, Actix Analyzer and Actix Spotlight.

·               In the process, collected OSS counters and statistics for UE, RNC and RBS using the Business Object (BO) tool and SENSOR. Evaluated and supervised network performance/quality through the OSS platform, and proceeded with process tuning and optimization to improve Worst Performing cells for CS Accessibility & Retain ability, PS Accessibility and Retainability and worst performing 3G to 2G IRAT Cells.

·               Identified RRC, SRB and RAB Admission issues including failures caused by Lack of DL Power, Lack of Channelization  Codes, Lack of Hardware and Uplink RSSI. Developed solutions to address these issues.

·               Compiled and analyzed BLER, DL CPICH RSCP/ EcNo, and Power measurements to evaluate user perceived quality, and assessed overall coverage and interference in cells within the UMTS network.

·               Recommended features and parameters changes based on analyzed data. (I.e. RAB capacity, Channel Switching, Congestion Relief, Handover, IRAT, Power setting, etc.)

·               Assisted with the Optimization performance of the markets to meet AT&T’s national KPI targets, advised and presented improvements to AT&T management team and technical leads.

·               Conducted Parameter audit according to AT&T HQ’s field alert and parameter best practices, and supported local RF team to run the network according to their market strategy.

·               Provided RF Consultancy on features knowledge as well as their benefits.

 

Additional activities included Field data analysis, and reviewing UE, RNC and RBS performance counter analysis for trending and identifying solutions and potential problem for future network growth. Trouble shooting through drive test data collected, and producing reports to show KPI trending after parameters change implementation.

·               In conjunction and coordination with the local AT&T RF team members, assisted the centralized RF Support Team to perform the following activities:

·               Analysis/Post processing of Drive test data & generation of key statistic. Supporting market team in radio counter statistics analysis (missing neighbor, MRR); Generating KPI reports in Business Objects on an agreed schedule, and In-depth analysis of factors impacting KPI statistics. Performed WNCS Analysis and Neighbor additions as well as Tilts recommendations. Tracked UL RSSI issues and work with local market for their resolutions.

·               Further responsibilities included assisting local market to setup Performance Monitoring processes including Daily/Weekly/Monthly Alarm Monitoring, Fault detection/Isolation and Resolution, Escalation & Notification to Customer for Service Interruptions through Use of ERICSSON’s “Best Practices”.

 

T- FORCE, Inc.                                                                                                                          Feb 07 – June 08

Wireless Engineering Consultant                                                                           
3G/R5 UMTS Network Planning Design and Deployment for T-Mobile, USA – South Region

Equipment Vendor: NOKIA-SIEMENS

Dallas, TX – Tampa, FL – Orlando, FL

·               Served as the Regional Wireless Planning Engineer responsible for the UMTS Network Design and Deployment in the following two metropolitan markets in Florida: Tampa and Orlando.  Key RF P.O.C responsible for ensuring that the 3G UMTS Design meets the design guidelines and KPI set forth by T-Mobile and Nokia. Facilitator of the RF design process through interfacing with NOKIA, validating potential candidates and deciding on optimal cell placement within the UMTS network. Performed the Nominal Design for the market after successful completion of Site Survey and Audit activities including Database verification and Asset3G updates. Performed Propagation Model assignments and Review for all sites. Coordinated Market Deployment activities. Ran all propagation predictions and conducted Monte Carlo Simulations in ASSET3G. Optimized Nominal Design in WINES ACP. Worked with Nokia on Design Review and approval. Determined initial down tilts to meet KPI’s. Conducted weekly meetings with various engineering teams and Coordinated Market Deployment activities.

·               As a Senior Wireless consultant at TransTEK Wireless for T-Force Inc, I demonstrated dynamic leadership and astute judgment for my client T-Mobile, thereby providing firm guidance and positive direction in fulfilling the mission of planning, designing and deploying 2 cost effective and well performing UMTS networks in Tampa and Orlando Florida. In exhibiting initiative, technical adeptness, sound judgment, and comprehensive knowledge of 3GPP guidelines in application and implementation of Wireless standards, Electro-magnetic theory, FCC’s policies and procedures, executed demanding assignments in a consistently outstanding manner and contributed materially to the successful accomplishment of overlaying 2 fully functional and commercial UMTS networks over the existing GSM systems.

 

COMNET Wireless Solutions                                                                               April06 – Jan07

Wireless Engineering Consultant
Network Planning and Design For Sprint – Nextel Communications,

Columbia, MD.

·               Conducted studies and analyses in multiple scenarios with the overall objective to assess Actix’s Automatic Cell Planning (ACP) Tool capability to shift traffic from over utilized sectors to lesser-utilized neighbors (Traffic Load Balancing), increase or maintain current quality within the BAWA market while adding capacity with minimal site build, and increase coverage without degrading quality (maintain good C/I), all taking into consideration a decrease/loss of spectrum in the market.

 

TransTEK Wireless Communications Inc. – Apeiron Inc.                                Dec 05 – April 06

Wireless Engineering Consultant
GSM - 3G/WCDMA/UMTS Radio Access Network Planning & Capacity Dimensioning For T-Mobile FSC Headquarters
Bellevue, WA.

Senior member of the T-Mobile National Capacity Planning & Dimensioning Team. Conducted performance monitoring, developed engineering application and detailed capacity studies surrounding all aspects of the BSS portion of the T-Mobile GSM and future UMTS national network. Acted as a cornerstone in the development and maintenance of national guidelines for capacity planning, dimensioning and related impact studies for all levels of the network including, radio, BTS, BSC, PCUs, transcoders and cell splitting/capacity sites. This included planning around AMR, GPRS, EDGE, IP Access and future 3G-UMTS-WCDMA technology

·               Supported the regions with all items involved with capacity planning, Traffic forecasting and Radio Access Network dimensioning

·               Provided monthly forecasts on the sector, site, BSC and transcoder levels and relayed this information to regional, NSS, financial and other pertinent groups. Verified the reliability and accuracy of the forecasts compared to current dimensioning rules.

·               Completed statistical analyses as they were requested, of impacts due to changes in marketing directives and variations in subscriber behavior, changes in equipment configuration, seasonality effects, etc…

·               Worked with Ericsson, Nortel, Nokia and BSS Engineering to define impact and dimensioning requirements with all issues revolving around new feature implementation, software upgrades, and equipment changes then subsequently supplied the regional teams with the required information. In displaying exceptional professional ability, foresight, mature judgment, and logical application of sound  Traffic Engineering  and Capacity principles, I was outstandingly successful in guiding  T-Mobile’s Capacity Management and Network Dimensioning  activities in Bellevue, Washington.

TransTEK Wireless Communications, Inc.                                                                         Oct 2005

Wireless Engineering Consultant
Network Performance and Optimization for Sprint – Nextel Communications
White Plains, N.Y.

·               Network Performance Planning - Statistics & Key Performance Metric Review and improvement including Total Drop call Rate, Blocking, and PCCH/SCCH performance. System wide Parameters review. Top 20 Drop Call Rate offenders identification. Site modification & High Site Optimization using Bucket Parameters to shed traffic and reduce Br’s stacks. Site Level & Cluster Level optimization. 900 MHz Optimization using power adjustment, Antenna patterns matching, etc… Site modification including antennas relocation, RC reduction, antennas change to improve Spectrum re-use and improve overall Network performance.

 

TransTEK Wireless Communications Inc. – AirCOM, Inc.                                 March – Sept 2005

Wireless Engineering Consultant
3G/WCDMA/UMTS Design, Deployment and Optimization for Cingular Wireless
Philadelphia, PA.

·               Senior UMTS Design engineer responsible for all aspects of the Cingular’s 3G/WCDMA/UMTS RF Network Planning and Overlay design in The Philadelphia - Harrisburg Market. Duties included using strong knowledge of UMTS technology to set and implement the UMTS design methodology for the Cingular radio network migration project. Pre-optimization and Post design optimization work.

·               Performed 3G/WCDMA/UMTS RF Network Planning and Overlay design, which involved carefully selecting existing GSM 850 and 1900 sites to produce a “Baseline Design”. UMTS Planning Tool: AIRCOM ENTERPRISE / ASSET3g - Automatic Planning Tool: OPTIMI’s ACP

·               Performed Radio Propagation analysis and modeling for various environments including Heavy Dense Urban, urban, suburban and rural morphologies.  Conducted K value calibration for various propagation models to be used in UMTS design, and generated clutter loss coefficients based on morphology.

·               Prepared a Baseline Design, and conducted  RF Planning GSM & WCDMA (3G/UMTS) Link budgeting, Nominal cell planning for a level of coverage, capacity and quality, Coverage and service prediction using Planning Tool, Radio design of sites (antenna height, type, orientation & tilts), Traffic distribution studies based on 64/64, 128/64 and 128/128 Throughput model. Performed Monte Carlo Simulations, generated plots, reports and statistics to be used in subsequent analyses. Optimized the “Baseline Design” by changing essentials RF parameters (E/M - Tilt/Antenna type, Power, etc...) to improve coverage, reduce pilot pollution and improve overall UMTS key UMTS parameters indicators (PCPICH RSCP - Ec/No and mean Served).

 

Pre-Launch and Post Launch UMTS Optimization

·               Responsible for optimizing the network to achieve target KPIs for CS-Voice 12.2, PS-Data 64, 128 and 384 kb/s. Conducted Pre-deployment investigations and post-deployment integration and validation.

·               Conducted Data fill and CIQ information preparation (input all relevant RF and TN parameters for RNC and NodeB) for the market.

·               Conducted Pre-launch optimization activities including Spectrum Clearing and Drive Test routes preparation.

·               Supervised data collection teams and optimized network parameters such as: antenna down tilts, neighbor lists, SC and handover parameters.

·               Performed analysis and investigation or RF problems related to the UMTS network. Post-process and analyzing DT data using Actix Analyzer.

·               Performed measurements to identify network problems such as Pilot pollution and Coverage overspill.

·               Conducted  Neighbor list Analyses to groom 3G-3G and IRAT 3G-2G neighbor lists based on scanner data for sites falling within a user defined radius.

·               Optimized KPI Metrics including CS Voice Access failure Rate, Call Setup Time, UL-DL BLER Quality – PS DL-UL Throughput, IRAT HO and Failure Rate.

TransTEK Wireless Communications                                                             Jan2005 – March2005

Wireless Engineering Consultant
CDMA2000 1XEV-DO Optimization and Field Integration Testing (FIT) For Sprint PCS
Kansas City, MO And Las Vegas, NV.

·               Led a team of Rf Engineers and Drive testers to Perform Field Integration Test (FIT) activities in The Sprint PCS 1xEV-DO Radio Access Network (RAN) consisting of Lucent Flexent 1xEV-DO base transceiver sub-stations (BTSs) and 1xEV-DO Radio Network Controllers (RNCs) collocated with 3G-1X infrastructure to form 1xEV-DO/3G-1X combined network.

·               Conducted Radio Access Network (RAN), Customer Data Network (CDN), IP Aggregator and AN/AAA Field Integration Test activities under various conditions to test the functionality, verify the performance and system coverage.

·               Provided a framework of Field Integration Test case scenarios, including all criteria that must be met in order to complete testing, i.e. validation, verification, documentation, activities, events, circumstances, and post-test activities.

·               Performed Regression testing to ensure smooth interoperability between CDMA 1xEv-DO and the existing 3G1xRTT Radio Access Network.

·               Performed Functionality testing with Agilent E6474 and Actix to ensure the RAN call processing functionality, including connection setup and teardown, registration, control channel operation, authentication and handoff behavior.

·               Performed Verification of System Coverage across the network and checked distribution of SINR, DRC, Receive and Transmit Power, Active Set Size and other relevant parameters.

·               Performed Verification of Hybrid mode RAN functionality that supports hybrid terminals capable of operating in CDMA2000 1X and 1xEV-DO modes.

·               Conducted T1/Cajun Routers/DACS/RNC Backhaul load performance Verification and Testing.

·               Continuously monitored the health of both 3G-1X / 1xEV-DO networks by collecting and reviewing Vendor specific parameters and Operational Measurements (OMs) from the switch using the Prospect Performance Measurement and Statistical tool.

 

WFI /SIEMENS                                                                                                     Oct 2004– Dec 2004

Principal Engineer II
FLASH-OFDM – WIMAX & CDMA 1X-EV-DO Planning and Dimensioning
Boca Raton, FL

·               Worked with various functional teams to prepare and assemble SIEMENS’s response to Nextel’s RFP for the deployment of their Next Generation High Speed Broadband Radio Access Network in the 1.9 and 2.5 GHz bands.

·               Assessed various technologies (EV-DO & F-OFDM) and deployment alternatives, their related risks and cost as well as the impact on system capacity and quality.

·               Developed a wireless project plan including RF design, network implementation, system performance and optimization.

·               Performed RF planning and dimensioning for the BAWA market, based on next generation F-OFDM release 3.0 and CDMA 2000 1xEV-DO Rev A Radio Access technologies.

·               Prepared and reviewed Link Budgets calculations, which incorporated the specified global parameter values, the technology/sector specific parameters, VoIP and Dispatch, data speed and services.

·               Performed Coverage design and capacity planning based on Nextel’s usage and customer demographic and subscriber usage model.
 

Principal Engineer II – WFI                                                                                 Jan 2000 – Oct 2004
Senior Radio Planning Engineer with Nextel – Nextel Partners in the following markets:

·               National Headquarters, Reston, VA - RF Guidelines Development and National RF Engineering     Coordination

·               Columbia, MD - iDEN Network Planning, Design and Expansion.

·               Greenville, SC - iDEN Network Design, Expansion and Optimization

·               San Francisco, CA - iDEN System Expansion and Network Optimization.

·               Harrisburg, PA - iDEN System Expansion and Network Optimization.

Responsibilities included:

·               Developed national standards and guidelines in relation to site design, link budget analysis, capacity planning, interference analysis, traffic analysis, system performance, spectrum management, and antenna standardization at The National Headquarters.

·               Planned and conducted weekly meetings to discuss complex technical projects involving multiple markets and functional teams to discuss specific issues, and gather market specific requests.

·               Coordinated the development of National RF guidelines in relation to QUAD base radios implementation and the 900 MHZ spectrum deployment.

·               Evaluated current spectrum allocation nationwide, investigated potential 800 MHz Rebanding issues and supported the planning effort.

·               Worked diligently with site acquisition and zoning restrictions, to assess candidates for viability and adherence to objectives. Prepared site design configurations, and detailed all site parameters to allow for rapid construction and installation.

·               Conducted measurement integration techniques to refine propagation models in WIZARD.

·               Developed and implemented solutions and approaches to provide adequate in-building coverage in the BAWA market using Donor antennas/ bi-directional amplifier (BDA), Mini Cell site/Fiber-optic repeaters with RF Distributed Antenna System (DAS) using LGCell, Foxcomm and Radio frame equipment. Major projects included The University Of MD Comcast Center and EDS Office Building in Reston, VA.

·               Worked in coordination with local RF Engineering teams and operations to conduct system shakedown and performance optimization.

·               Developed an RF Performance Enhancement Plans by evaluating the existing networks and making specific recommendations to improve system level performance metrics.

·               Performed Network Audits to ensure cell site parameters and antennas configuration are set according to design guidelines.

·               Investigated network problems and identified their sources. Recommend corrective action including parameters Adjustment (H.O, Hysteresis, Power, Neighbor list) to improve coverage, increase radio resources utilization, and reduce congestion and dropped calls.

·               Verified performance improvements by auditing service measurements, drive testing trouble spots and comparing before and after statistics.

 

Principal Engineer II – WFI                                                                              May 2003 – Nov 2003
Leadership and Management of The Telephia $Multi Million outsourced Engineering and Competitive Benchmarking Project.

·               Lead a team of 30 engineers with responsibility for the overall operation of the project.

·               Responsible for overall management and planning for the local office, logistics and field operations personnel assigned to the Telephia Project.

·               Resource planning functions included overseeing regular schedules, special requests analysis, tasks prioritization, overall project balancing and alignment with budgets.

·               Set measureable objectives, analyzed available resources, identified required resources, assigned responsibility and planned for contingencies.

·               Managed recruitment, training and career development of staff and conducted critical performance reviews with Bonus/penalty incentives.

·               Developed and maintained professional relationships with management and client at all levels to support process implementation.

·               Managed project activities in order to accomplish schedules and targets defined by client. Coordinated resources allocation to projects in the centralized office. Established and ensured process among all projects running. Reported performance to upper management and client. Coordinated equipment requirements for the data collection activities in the field. Approved time report for field engineers. Created a Roster List for supporting the markets according to their respective schedule.

 

Principal Engineer II – WFI                                                                        January 1999 – Jan 2000
Senior Radio Planning Consultant with SIEMENS in Casablanca, Morocco
GSM RF Design, System Deployment/RF Optimization

·               Developed a wireless project plan including RF design, network implementation, system performance and optimization.

·               Worked diligently with site acquisition and zoning teams, to acquire and assess 1800 candidate sites for viability and adherence to objectives. Prepared Link Budgets, site design configurations, and detailed all site RF parameters to allow for rapid construction and installation.

·               Conducted drive test measurements (RXQUAL, RXLEV, FER FULL/SUB, DTX Rate) with TEMS, and reviewed BSS Statistics in order to troubleshoot failed call attempts, handover failures, TCH/CCH congestion, Coverage quality, co/adj-channel interference, RF link imbalances, hardware faults, etc…

·               Prepared and implemented corrective actions (BSS power increase/decrease, antenna tilt/orientation, add/remove neighbors, frequency retune), and parameters Adjustment to improve coverage, increase radio resources utilization, and reduce congestion and dropped calls.

 

Project Manager – LCC International                                                                     Nov – Dec 1998
Senior Wireless Telecomm Consultant with Nextel De Mexico S.A de C.V in, Mexico City, Mexico

·               Conducted iDEN RF Optimization, Mexico City, Mexico
Assumed functions of Optimization Coordinator with full responsibility for optimizing Nextel’s cellular      market in Greater Mexico City Metropolitan Region.

Project Manager - LCC International                                                                     March – Oct 1998
Senior Radio Planning Engineer with Fijutsu Communications in Tokyo, Japan,

IS-95 - CDMA Network Design

·               Worked in collaboration with the Fijutsu RF engineering Team to develop, plan and design a CDMA     network in the Guangdong Province of China, using the principles of QUALCOMM Code Division Multiple Access (CDMA) and the relevant system architecture.

·               Used CellCAD to conduct the RF Planning and design process.

·               Calibrated and Optimized the propagation Model, Prepared the traffic maps and used the Planning tool to run Forward Link and Reversed Link Analyses including Uplink Load, Coverage and Capacity- Required Mobile Power- Best Servers Plots and Handovers Status- Forward Ec/Io, Total Interference, etc...

·               Developed and prepared a Link Budget Analysis taking into consideration The BTS and MS Rx sensitivities, hardware losses/gains, The target coverage Reliability, the Propagation Characteristics of the Channel and the receiving environment.

·               Produced Coverage Design Thresholds, Base Stations ERP’s, Maximum Allowable Path Loss, Cell count and Cell size estimates.

·               Prepared a PN-Offset Plan for the system.

·               Prepared site design configurations, and detailed all site parameters to allow for rapid construction and installation.

Project Manager - LCC International                                                                        May 1997 – Feb 1998
Senior Radio Planning Engineer with Sprint Spectrum in Kansas City, Missouri.
PCS-CDMA System Evaluation, Benchmarking and Optimization, Kansas City, Missouri.

·               Conducted Competitive Benchmarking Testing and Analysis for Sprint PCS CDMA network and other local cellular systems.

·               Worked with the local team to gather drive test data from 3 major wireless carriers in Kansas City and Wichita, using the EXP2001ä (BENCHMARKERä), AURYSTä, and LL2000ä

·               Analyzed data with CMA and derived performance information such as AQS (Audio Quality Score), Access statistics, dropped call rates with regard to each system. Assessed Sprint’s performance relative to other wireless networks.

·               Investigated network problems and identified their sources. Recommended corrective action including parameters Adjustment to improve coverage, increase radio resources utilization, and reduce congestion and dropped calls.

·               Verified performance improvements by auditing service measurements, drive testing trouble spots and comparing before and after statistics.

·               Prepared changes and recommendations such as power level adjustment (BCR attenuation), T_ADD, T_DROP, T_COMP, TT_DROP, pilots search windows, etc. to improve overall performance of Sprint’s CDMA network.

Project Manager - LCC International                                                                    October 1996 – April 1997
Senior Radio Planning Engineer with Lucent Technologies in Philadelphia, Pennsylvania
Verizon Wireless CDMA-AMPS Network overlay and  Optimization

·               Assumed functions of Lucent RF team leader, with responsibility for coordinating all optimization activities for the CDMA/AMPS network overlay.

·               Coordinated with all inter-disciplinary teams, Developed an RF optimization Plan and Quantified overall resource requirements for project completion.

·               Coordinated and monitored the installation and testing of Lucent optimization tools and drive test equipment (Qualcomm MDM’s, DAT tool, SPECTRUM SWAP, ALERT, NPAR, OCNS, RF CALL TRACE).

·               Performed Network Audits to ensure cell site parameters and antennas configuration are set according to design guidelines.

·               Identified important areas in the region and prepared drive routes.

·               Collected drive data with Qualcomm’s MDM, analyzed data with Lucent DAT Tool, and derived performance information such as access statistics, dropped call rate, dominant Ec/Io, transmit power, FER and RFER with regard to each selected drive route.

·               Investigated network problems and identified their sources; Recommended corrective action including key CDMA parameters Adjustment (power control and power level/BCR attenuation, T_ADD, T_DROP, TT_DROP, pilots search windows, etc.) to improve system level performance metrics (KPI).

·               Prepared changes and recommendations to affect required Eb/No, Decreased interference and pilot pollution, and reduced excessive handoffs.

·               Verified performance improvements by auditing service measurements, drive testing trouble spots and comparing before and after statistics.

·               Supervised a team of 17 RF engineers, technicians and drivers, and converted The Verizon Wireless AMPS system into fully functional and commercial CDMA850 wireless network that included 4 Lucent 5ESS switches and over 600 AUTOPLEX Series II cell sites.

Project Manager - LCC International                                                           May – September 1996
Senior Radio Planning Engineer with Ptt Telecomm, The Hague, Netherlands (GSM900)
AlCATEL – Nokia System Audit & Network Performance Improvement ( NPI)

·               Prepared a complete Capacity Expansion Study along with a nationwide coverage design, based on existing Ptt’s GSM traffic data and The Netherlands’ demographic information to accommodate an increase of subscribers over the next 4 years.

·               Performed System Audit and Capacity Expansion of the GSM900 Network.

·               Performed Network Audits to ensure cell site parameters and antennas configuration are set according to design guidelines.

·               Investigated network problems and identified their sources. Recommend corrective action including parameters Adjustment to improve coverage, increase radio resources utilization, and reduce congestion and dropped calls.

·               Recommended and tested the use of special techniques and features (Frequency Hopping- DTX – Power Control, etc...) to reduce interference, increase capacity and improve overall performance.

·               Identified “Hot Spots” areas and developed Micro Cell designs to accommodate projected traffic.

·               Prepared a BCCH Frequency Plan taking into consideration Frequency coordination rules with respect to the neighboring countries (Germany, France, Belgium) to avoid interference.
 

Project Manager - LCC International                                                              July 1995 – May 1996
Senior Radio Planner For Nextel Communications, White Plains, New York. (MOTOROLA-iDEN)

·               Performed System Audit and RF Optimization

·               Assumed functions of team leader with primary responsibilities that included spectrum management, traffic forecasting, capacity planning, frequency planning and interference analysis of Greater New York market (New York, New Jersey and Connecticut).

 

Senior RF Engineer - LCC International                                                       March 1994 – June 1995
Radio Planning Engineer For Dial Call Communications (Nextel), ESMR \ iDEN Network Planning, Implementation and Optimization, Atlanta, Georgia

·               Led team of seven engineers with total responsibility for design, implementation, optimization and expansion of Greater Atlanta Region.

Design Engineer - LCC International                                                  February 1992 – February 1994

·               Worked with various clients to respond to Request For Proposal or Bids for cellular licenses in Europe, Middle East and Latin America.

·               Worked with various functional teams to combine financials, marketing goals and operational requirements to successfully develop a wireless project plan including vendor selection, RF design, network implementation, system performance and optimization.
- Bellsouth International, The Netherlands (GSM)

- Tadiran Communications, TEL Aviv, Israel (AMPS/IS54)
- Celumovil de Colombia, Bogotá, Colombia (AMPS/IS54)
- Italy, Korea, India, Argentina and Brazil Projects (GSM, AMPS, IS54)

 

Associate Engineer - LCC International                                                     July 1991 – February 1992

Radio Planning engineer for FRANCE TELECOM – GSM System Design, Paris, France

·               Performed System planning, design and optimization for the Lyon region.

·               Analyzed candidate site locations through propagation prediction and drive test, and assessed them for viability and adherence to objectives.
 

EDUCATION:
Graduate courses toward MS Degree in Electrical Engineering (Telecommunications), The Johns Hopkins University, Baltimore, MD
1991 BS Electrical Engineering, University of DC

PROFESSIONAL TRAINING
LCC Wireless University
· Survey and Site Selection, EM Theory and Propagation, Modulation and Coding, Cellular Systems Design Theory, Electronic Devices in Cellular, Antenna and Radiation
· Cellular Systems Protocols (GSM/ IS136/ iDEN/ CDMA), Telephone Traffic Engineering, Link Budget Analysis, Frequency Planning and Interference Analysis, Capacity Planning in Cellular, MSC/OMC Overview
· Handoff Parameters, System Design, Implementation, Evolution and Optimization, Direct Sequence ·Spread Spectrum, PCN / PCS Systems - SMR, ESMR and iDEN Overview.
· QUALCOMM CDMA/CDMA Workshop

· LTE Radio Network Design

QUALCOM Wireless University
· UMTS/WCDMA Network Planning

· UMTS/WCDMA Radio Interface Protocols

· UMTS/WCDMA Physical Layer

· UMTS/WCDMA Network Optimization

Lucent Wireless Training Program
CTSO850 CDMA Planning, Design and Optimization

WFI Training Program
· GSM Evolution to GSM2 - GPRS – EDGE – and UTRA.
· Evolution of The IS-95A Standard to IS-95B – 1XRTT – HDR – and cdma2000.
· IS136 migration route to IS-136+ - IS-136HS – EDGE - and UWC-136
· CDMA Concepts and Application in Wireless PCS networks
· GSM Based Cellular Systems (GSM900/DCS1800/PCS1900)
· CDMA 1X-EV-DO Overview, Planning and Design.
· CDMA2000 1xEV-DO Dimensioning and Optimization Workshop

· Managing Legally

TransTEK Wireless Communications, Inc.

· IP Protocols

· Concepts of 3GPP LTE Release 8,

· Addressing The Design And verification Challenges Of 3GPP LTE

· LTE Protocols

· Understanding SC-FDMA-The New LTE Uplink, LTE RF Measurements, LTE Uplink Power Control

· Introduction To LTE Advanced Release 10.

 

HUAWEI: TL9000 Quality Management Systems : Oct 2011-Toronto, Canada

Hardware & Software Planning Tools:
· Proficient in MS office Suite: Excel, Word, Access, PowerPoint. MS Project. MS SQL databases.
· RF Planning, Design & Propagation Prediction tools: ANET, PlaNet2.8, dB Planner, NP Workplace (micro cell planning tool), Wizard, Odyssey, Cell Opt AFP/ACP, ENTERPRISE-ASSET3G, Radio plan ACP, Optimi ACP, PlanetEV, Forx ATOLL.
· RF Optimization and Network performance tools: CMA, Agilent E6474A - Nitro, Grayson, Ericsson TEMS, DeskCat, Actix Analyzer, PN scanner, SAFCO, QUALCOMM CAIT, Lucent MDM, OPASS32, MapInfo,          

· Statistical & Performance Trending Tools: Business Object, WATCHMARK/Prospect, SENSR, METRICA.

LTE & UMTS Drive test tools: TEMS INVESTIGATION,  JDSU-E6474,  XCAL, Comarco, Clarify,  Nemo PCTEL Scanner, Spectrum Analyzer, Oscilloscope, handy, Rhodes And Schwarz, Invex 3G.

LTE & UMTS Post processing tools: Actix Analyzer, Actix Spotlight, OPTPCS, eDAT, CLARIFY Analyzer, Windcatcher.