EXPERIENCE

Confidential, Schaumburg, IL

RF VoLTE Optimization and Design Consultant

Responsibilities:

• Mentoring Confidential VoLTE performance by evaluating different KPIs including: setup success rate, handover success rate and call completion success rate.
• Confidential VoLTE optimization and features activation like header compression, TTI (Transmission Time Interval) bundling and QoS to make VoLTE call reliability, quality and efficiency significantly higher than with OTT VoIP applications.
• Adjusting Atoll, CSS, and OSS databases (Antenna type, Azimuth, Rad center, Antenna position and feeder type) based on the latest redline (As Built) RFDSs using different Confidential & Confidential platforms including: Autoforms and Filenet.
• Consolidate any mismatches between the Atoll’s electrical down - tilt and the on Air OSS EDT.
• Checking the sites’ geo-locations in all different databases (Atoll-LTE and UMTS, CSS, and OSS) to match the site survey and Google & Bing aerial maps.

Confidential, Boston

Senior RF Optimization Consultant

Responsibilities:

• Multi-band LTE network experience (LTE 1900 MHz FDD, LTE 800MHz FDD, and LTE 2.5GHz TDD) including inter-frequency HO, load balancing, Admission control priority, etc.
• Conducting and Implementing Confidential market, including: Robust Header Compression (ROHC,) which improves spectral efficiency by reducing VoLTE throughput requirements on the radio interface, and implementing TTI bundling to enhance VoLTE uplink performance in the weak signal which allows the handset to repeat the same transmission in four consecutive 1 ms TTIs and makes the uplink more robust and enhances coverage by 4 dB.
• Working experience on different Sprint tools (Tableau, Trams, RF Cockpit, Glance, etc.)
• Sprint worst performing Agoop meshes analysis (Agoop is Big Data solution that calculate the Smartphone Packet Data Connection Success Rate for randomly selected Sprint subscribers.)
• Optimizing CDMA Neighboring lists for different Voice channels, Analyzing HOM neighboring lists, and adding CDHNL, CDHFL border settings between different voice carriers sites.
• Analyzing LTE, CDMA / EVDO Top Offender cells on a daily bases; monitoring the cells different KPIs including: RRC Connection Failure Rate, RRC Drop Rate, PDSCH Average Throughput, and intra Frequency HO Success Rate, etc. using NPO (Network Performance Optimizer ALU Software.)
• Recommending physical and parameters changes, such as: RET downtilts/uptilts, reference signal power and other channels power offsets (i.e. PBCH, PCFICH, PDCCH, and PDSCH, etc.), intra frequency HO Hysteresis and Time to Trigger, HO events A2, A3, A4 and A5 thresholds values, qRxlevmin, filterCoefficientRSRP, CellRadius, ANR (Automatic Neighbor Relations) parameter settings and qOffsetCell, etc.
• Post processing LTE (1900 MHz) and 3G (800 MHz) drive test for New England Market clusters using Wind Catcher and EDAT (ALU tool), by analyzing Layer 3 and 2 messages to stand on the Drop Call and Access Failures reasons to fix them.
• PCI, TA planning and Design for the whole Boston Market.

Confidential, New York

RF Optimization Consultant

Responsibilities:

• Pre/Post Launch LTE RF Optimization for Confidential -Mobile 4G network in Upstate Market.
• UMTS Advance Optimization (conducting trials for new parameters patches to improve the overall 3G network KPIs).
• Conducting LTE / UMTS basic Optimization concept trainings for the local Market RF team.

Confidential, New York

Optimization and Design Market lead

Responsibilities:

• Managing the client’s satisfaction and relationship which include: the market initial requirements definition, project progress reports on a regular basis, explaining the project overall process and client negotiation in order to maintain the revenue margins within a reasonable time line and a limited resources.
• Managing the project resources, which include: allocating different resources based on the project’s changes in requirements and schedule, managing the remote team’s resources in terms of communication and timing, adjusting the resources’ tasks to avoid any conflicts and engaging the needed technical resources to resolve different technical issues.
• Maintain a project’s outputs within the time limits by: managing the project schedule in a dynamic environment, avoiding unnecessary delays in the project progress and optimizing the number of resources to achieve the client’s requirements within the time line..
• Leading the Confidential & Confidential Upstate NY market of total 1200+ sites and a RF team of 12 RF engineers.
• Monitoring the LTE network KPIs (S1 Handover, Handover Interruption, Location Update, Paging, Tracking Area Configuration Score, RRC Connection, SAE Bearer modification, SAEB Bearer Release, Block ACK ratio, Block ERR ratio, HARQ Failures, and Latency), and preparing a weekly performance report for Confidential & Confidential Market director.
• Optimizing the LTE network’s performance by tuning different LTE parameters ( Confidential format for the appropriate cell radius, PCFICH for different PDCCH symbol numbers and timing advance parameter ) and physical configuration (bore tilts, heights, sites relocation, sites sparsing, power calibration…etc).
• Configuring LTE neighbors list and inter-RAT neighbors (GSM, UMTS) optimization.
• CPI (Cell Physical Identity) and Tracking Area configuration Score; planning and optimization.
• Changing the cell range by setting different Confidential groups configuration.
• Troubleshoot areas with poor RF performance. Request drive tests, analyze data, and recommend network changes as applicable.
• Confirm spectrum clearance, integration testing, power calibration, and call-through tests were carried out, and all entrance criteria are met before start of optimization.
• Providing Confidential & Confidential local market with different recommendations in regular basis to resolve the current on Air problem areas, drop call zones and chronic drop sites.
• Providing the preliminary, launch and final LTE design, technical plumbing diagrams, cluster design, PCI & TA planning and RNDCIQ for integration.
• Improving the total designed LTE network KPI’s (coverage -mainly RSRP-, quality - RSRQ and SINR-, throughput - average simulated Mbps per Cell and for the total network-, and dominance-interference reduction.)
• Generating Atoll predictions plots to evaluate the network performance based on the new proposed configuration changes, running Monte-Carlo simulations for capacity estimations and throughput improvements, and site selection and cell optimization using Capesso and Arieso ACP.
• Presenting the justifications and the thought process behind all the new LTE network design recommendations to the Confidential & Confidential RAN director and regional VPs.

Confidential

LTE RF Optimization and Design Engineer

Responsibilities:

• Analyzing the MME and eNodeB Stats to evaluate different KPIs; such as: Accessibility, Retainability, Mobility, and Service Integrity.
• Improving the network’s KPIs related to: S1 Handover, Handover Interruption, Location Update, Paging, Tracking Area Configuration Score, RRC Connection, SAE Bearer modification, SAEB Bearer Release, Block ACK ratio, Block ERR ratio, HARQ Failures, and Latency by changing parameters and physical configuration (bore tilts, heights, sites relocation, sites sparsing, power calibration…etc).
• Confidential format for the appropriate cell radius, PCFICH for different PDCCH symbol numbers and timing advance parameter setting.
• Setting different configurations for TDD frame and special frame such as: DwPTS, GP and UpPTS.
• Configuring LTE neighbors list and inter-RAT neighbors (GSM, UMTS) optimization.
• CPI (Cell Physical Identity) and Tracking Area configuration Score; planning and optimization.
• Changing the cell range by setting different Confidential groups configuration.
• Troubleshoot areas with poor RF performance. Request drive tests (NiXT Drive test tool from Agilent), analyze data, and recommend network changes as applicable.
• Confirm spectrum clearance, integration testing, power calibration, and call-through tests were carried out, and all entrance criteria are met before start of optimization.
• LTE RF planning and design using Atoll planning tool using the following system parameters: FDD duplexing, band 7 (2.6 GHz Spectrum), 10 and 20 MHz channel BW, 1x3x1 frequency reuse and 2x2 MIMO system.
• Estimation the total number of sites for 90% coverage of greater Amman area Confidential 2Mbps as cell edge throughput based on customer requirements and the LTE system parameters.
• Antenna gain, Transmit power, Diversity gain, Noise Figure, Receiver Sensitivity, EIRP, Lognormal Fading, Fast Fading, Interference margin, Number of resource elements, Power per resource element, Building loss, Vehicle loss, Body loss and Target SNR.
• Generating different Atoll predictions plots; such as: Coverage by C/(I+N) Level prediction, RSSI plots (Effective Signal analysis), Peak RLC channel throughput plot, Coverage by transmitter (Best server), Coverage by best bearer and Overlapping zones.
• SPM (Standard Propagation model) tuning using Continuous Wave (CW) drive test data logs from different sites on different clutter classes.
• Monte Carlo Simulation for LTE system capacity Analysis using different traffic maps and subscriber lists data and analyzing the simulation statistics to make sure that the percentage of rejections due to Resource Saturation (%RS) for all sectors is ≤2% which indicates that the system capacity is sufficient to satisfy the traffic load requirements for the planning period.