RF Network Design & Optimization Sr Engineer

Mario Torres, P.E.

* **** ****, ********, ** ****2

Cell: +1-619-***-****

Home: +1-415-***-****

***********@*****.***

www.linkedin.com/in/mariotorres225

Profile

Technical Lead in RF Network Planning and Performance Optimization in Tier-1 2G/3G/4G networks, domestic and overseas. Managed large projects, and individual contributor with extensive hands-on experience. Sr. System Engineer for 3GPP SON: algorithm definitions and refinement through data analytics (ML), key POC during FOAs of individual use-cases in major networks; test plan drafting and implementation, and KPI-based statistical analysis, including data visualization (dashboard), including Tableau.

Major achievements

·Developed and enhanced algorithms for 3GPP SON use-cases. Supported FOA testing through KPI optimization and customer acceptance testing, with emphasis on Ericsson markets. Collaborated in the improvement of data visualization tools.

·Implemented Advanced SON, with enhanced analytics and ML practices. Specific areas of improvement: self-healing, self-optimization use-cases, LTE’s MDT and MRO, interaction with CCO, and impact on VoLTE performance; preliminary 5G use-cases.

·Zone Engineer for AT&T LA Market, primarily in UMTS, also LTE, and GSM. Zone reached score of 96/100 at EOY13.

·National Technical Lead for the rollout of automated optimization tool in AMX markets.

·Regional Lead for pre- and post-launch teams for 3,000+ sites, drive-less tuning, for the LA AT&T UMTS network, and launch of 80+ clusters in Central TX on a few months.

·Service Lead for the pre-launch tuning of LTE sites.

·Turned optimization project around for large region in the Telcel 3G rollout.

·Identified key improvements for a CDMA-450 WLL network in Mexico (model tuning)

Education Bachelor Science EE, University of New Orleans

PE (EE), Washington State

Major areas of Expertise

·Planning

oGreenfield design and tuning of CDMA1x Nortel networks (600 BTS)

oDesign review (Atoll and ACP), Nortel CDMA 1x network in Ukraine.

oDesign of UMTS overlays on GSM networks (Ericsson, Nokia, Nortel)

oDesign of EvDO overlays on CDMA 1x Nortel RAN in USA markets.

o Design-review of Huawei/ZTE’s 450-CDMA WLL networks in Peru

o Model tuning for CDMA/UMTS networks, using Atoll, RadioPlan, Planet-EV

o Early adoption of ACP in Verizon’s Houston market

·Propagation tools: Atoll v2.6, Planet EV v4.3, Asset 3G v6.0.0, GeoPlan v5.0

·ACP tools: Newfield’s GO, RadioPlan WiNeS v3.5

·Optimization

oLTE, Architecture, Protocols, System Design, Implementation & Optimization

oUMTS networks: site-shakedown, RSCP verification, Ec/Io optimization, HSPDA troubleshooting, MDT/EDT optimization, NL-tuning, IRAT and RNC border verification, Iub troubleshooting, RNC parameter baseline

oRegional lead for AT&T’s UMTS Network, with E2E responsibility for sites, from integration to delivery to client’s RF Engineering organization.

oTroubleshooting NL and PN-plan in CDMA-450 rural networks (Huawei, ZTE)

·Optimization tools: Actix, XCAP, Windcatcher, TEMS RA, ZTE ZXPOS, Schema, COPS, AT&T’s Quantum, RMPA, Arieso’s GEO (GPEH)

·Vendor Tools: Ericsson’s GPEH, UETR, CTR, BO WNCS, MCOM, OSS, AMOS, Tableau

Employment

Nokia, July 2015 - April 2018

Sr. SON System Performance Engineer July 2015 - April 2018

Technical SON customer support in large networks in the USA, Mexico, and Spain. Product owner for specific modules during the integration of SON EdenNET and Nokia’s iSON. Collaborated in Advanced SON, with increased reliance on data analytics and ML practices. Specific areas of improvement: self-healing, self-optimization modules, for both LTE and WCDMA. Particular emphasis on Ericsson OSS and markets; enhanced data visualization (dashboard) for KPIs.

Eden Rock (Nokia acquired), February 2014 - July 2015

Sr. SON System Performance Engineer

Responsible for technical customer support during the adoption of SON in the T-Mobile USA network, and overseas. Developed and enhanced SON modules (addressing specific 3GPP use cases), like 3G CCO, LTE CCO, and other modules scoped to automate optimization practices. Provided on-demand customer support for SON, domestic and overseas, particularly Ericsson OSS.

Artech, Sr Zone Optimization Engineer November 2012 - December 2013

Responsible for optimization of UMTS/GSM/LTE Zone 1A in Los Angeles. Main focus: improving AT&T national CQI score at zone level (composed of KPIs for CS/PS ret & access, as well as other factors), interacting with triage team, operations, and C&E, to isolate faults/interruptions; optimization challenges due to capacity constraints in a large mobile network. Rapid rollout of LTE eNbs to 50+% of UMTS sites, while improving LTE CQI, and maintaining 3G performance.

Celcite Management Solutions in Mexico City, April 2012 - November 2012

National Technical Lead, interfacing the customer, Dir level and above, for the adoption of COPS, in a challenging international deployment. Lead hands-on training and support of Telcel RF Engineers, adopting COPS for rapid optimization of the 2G/3G networks; troubleshooting of congested areas in Mexico City, with hands-on training on geo-located L3 data; LTE early plans.

Ericsson USA, 3G Delivery Service Lead January 2009 - March 2012

Lead pre- and post-launch optimization remote/local teams, delivering 2,000+ adds for the LA AT&T Market. Fast-paced environment, with peak weekly rates of 50+ carrier-adds (3c/4c/5c). Produced Perl scripts to automate LM parameter tuning, as well as initial NRs. 1st-line POC for escalations from the Dir- RF and local AT&T management team. Participated on the early alignment of service delivery for UMTS and LTE, pre- and post-launch.

T-Force Sr Consultant, June 2009 - January 2011

Sr Optimization Engineer, promoted to ML and then RL for AT&T TX Markets

Responsible for pre-launch tuning, using Actix for DT data analysis. Promoted to Market Lead, and 3 months later to Regional Lead for the AT&T TX Markets. Lead a team of 50+ engineers in the launching of 3rd carrier projects in TX major markets (5+ clusters per week). Promoted to Regional Lead for the AT&T Los Angeles Market in May 2010, achieving the project scope: 1,000 3c in six months.

T-Mobile, Sr UMTS Network Engineer October 2008 - May 2009

Generated RFDS for NSN, Ericsson, and Nortel GSM sites for upgrade to UMTS NodeB. Compiled pre-launch neighbor lists and SC Plans for several markets. Created traffic-spreading polygons for MC simulations (Asset 3G), and polygons based on RSCP and EcIo compound arrays. Tuned path loss matrices for 200+ sites, using Radio Plan WiNeS.

Promedia Telecom, October 2007 to October2008

Ericsson 3G Regional Optimization Tech Lead, May - Oct 2008

Lead the RF optimization team, to meet acceptance KPIs (voice, video, HSDPA) for Telcel s Region 4, including Monterrey. Improved performance of the region (from the lowest acceptance record), by systematic RCA. Established 2nd level for handling customer complaints. Lead the client’s design team in solve footprint issues. Improved systematic use of UTRAN tools, as well as isolating RNC issues—particularly UETR.

Telmex, Mexico City February - April 2008, Principal Consultant to Qualcomm

Reviewed the design and implementation of a CDMA450 project, months behind schedule. Presented best practices for network integration, proper RF model tuning with Atoll v2.6, systematic analysis of drive data, audit of BSS data, and troubleshooting external interference. Deeveloped a 90-day work plan, using CAIT, as well as ZTE’s ZXPOS collection/analysis suite.

ESG January 2008, Principal Consultant

Reviewed Network Planning Guides for 1x CDMA, UMTS --link budget calculations, propagation tool application, and optimization guidelines for the Qualcomm s ESG team.

Telmex Peru, October - December 2007

Principal Engineer for Qualcomm providing technical guidance for RF network planning of Telex 450CDMA (1X and EvDO ) all over Peru. Technical review of Huawei and ZTE proposals. Reviewed Telex WLL traffic model, as well as RF model tuning with Planet EV 4.3.

Newfield Wireless, October 2005 – Oct 2007

Sr. RF Engineering Consultant for Nortel, June 2007 to October 2007

Overlay EvDO networks for VZW, and TSU. Applied ACP on CDMA 1xRTT network in Ukraine, overlaid with EvDO. Trained Nortel RF engineers in i-planner(Atoll) and ACP (GO).

Sr. RF Engineering Consultant, Leaco, May 2007

Optimized 850 MHz and PCS CDMA2000 systems for a rural carrier, with very demanding path loss ranges, using TEMS 8.0 and XCAL/XCAP.

Sr. RF Engineering Consultant, Forsk, September 2006 - April 2007

Mentor to AT&T during adoption of Atoll 2.5.2 GSM/UMTS modules. Trained RF Engineers in 40 markets, and supported data conversion, including project verification vs previous tools.

Sr. RF Consultant Pocket Comm, San Antonio, TX, January - August 2006

Lead Planner for a CDMA 2000 network, using Atoll (v 2.5), and Newfield’s GO (ACP) including site selection, model tuning, field verification of antenna systems. Defined daily reports (high-level, and detailed RF analysis reports. DT data analysis with Wireless Logix XCAL and XCAP.

Sr. RF Consultant for Verizon Wireless, Houston, TX, October - December 2005

Optimized CDMA 2000 network with Newfield’s GO and Verizon’s GeoPlan (v5.0.3). Analyzed before/after simulations for Ec/Io, dEc, SHO, based on OPL predictions. Provided DT analysis with Actix, for antenna tilt changes in downtown areas.

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