Mobile: +1 940 765 0998

Skype: carlos.rosas3

E-mail: carlos.crq@gmail.com

www.linkedin.com/in/carlosrosas

 

Carlos Rosas

 

 

Objective.

Share and improve my professional experience to get excellent results through a teamwork in a friendly environment in order to achieve excellent result.

Summary.

·    Multi-Vendor Radio Network Engineer Consultant with more than 14 years total in experience:

o    11 years in Ericsson equipment 

o      3 years in Nokia equipment. 

·    High understanding on providing Design, Network Roll-Out & Optimization support in GSM, WCDMA & LTE Networks.

·    Interested in new technology, knowledge and activities related to Wireless Telecom industries.

·    RF Consultant and Team Leader in a wide variety of projects in Latin America (Mexico, Honduras, El Salvador, Brazil), USA (Kansas, Texas, Boston, Alaska, South Florida, California) & The Caribbean Area (Dominican Republic). Particularly interested in Optimization Projects.

 

Assignments

USA – IndianaSprint WirelessSolution ArchitectRF OptimizationLTE & CDMA/EVDO

USA - variousAT&T Wireless Senior RF Post-Launch, RF Opt. and NPILTE & WCDMA

MéxicoTeMM - TelefónicaRF Team LeaderDesign and Network Roll-OutWCDMA 1900/850MHz

MexicoTelcel - America MovilRF Team LeaderDesign, Network Roll-Out and RF Optimization WCDMA 850 MHz

Dominq Rep.Claro - America MovilSenior RF Network Roll-Out and RF Optimization GSM 1900 MHz

USA - TX & CACingular WirelessSenior RF Network Roll-Out and RF Optimization WCDMA 1900 MHz

USA - TexasCingular Wireless Senior RF RF Optimization & Cabinet Expansion GSM 1900/800 MHz

USA - KSUnicel – RCC GroupSenior RF Network Roll-Out and RF Optimization GSM   800 MHz

BrazilTelemig GroupRF Engineer RF Optimization GSM 1800/900 MHz

El SalvadorTelemovilRF EngineerDrive Test GSM   850 MHz

HondurasCeltel - Millicom GroupRF EngineerDesign, Network Roll-Out and RF Optimization GSM   850 MHz

MexicoTelcel – America MovilTeam LeaderNetwork Roll-Out and RF Optimization GSM 1900 MHz

 

Professional Experience.

 

Nexius Solutions - Indianapolis, USA

Sprint Wireless – Samsung LTE (FDD & TDD), CDMA/EVDO Optimization project            April 2015 – Now

Solution Architect Consultant.

 

RF LTE Optimization

·Network Roll-Out processes to deliver the network at a minimum KPI´s required by the customer.

·Coordination of RF and Drive Test Engineers to achieve every task on time and with quality under a friendly environment work.

·Constant communication and update with the customer in regards to our weekly and monthly activities/plans.

·Change of radio and traffic parameters at Cell Level according to consistency checks and needs on the way of the Roll-Out.

·Optimization of Load Balance & Layer Management between carriers with different Band width / earfcndl and border cells.

·             RF Shaping to control possible over shooters or identify cells over tilted, ANR tuning to avoid PCI collision and /or far neighbor relations added.

·Deployment of trials to optimize features already in place and new features to come.

 

Ericsson USA

AT&T Wireless –WCDMA & LTE Post-Launch, Network Roll-Out, Optimization and NPI projects             June 2010– March 2015

Senior RF Consultant.

 

LTE Post-Launch (1^st, 2^nd & 3^rd Carrier)

·Optimization of Load Balance & Layer Management between carriers with different Band width / earfcndl and border cells.

·RF Shaping to control possible over shooters or identify cells over tilted, ANR tuning to avoid PCI collision and /or far neighbor relations added.

·Gold Standard audit to verify Features and eNodeB parameters are align accordingly.

·Test and monitoring of new Field Guide Alerts (FGA).

·Delta report analysis after software upgrade and/or FGA implemented.

·Daily monitoring and optimization of network KPI's (Acc, Ret, IRAT, TNOL, HO (Intra & Inter), UL & DL Thrpt) through Business Object

·Troubleshooting and service performance reporting on worse cells with respect to affected KPI's through WinFIOL to verify ROP by ROP impact.

·Sanity check and audits for each cluster to be optimized e. g. RSSI, VSWR & alarms verification and audits (PLMN Reserved/Cell Barred/ Admin/Op State, UTRAN & EUTRAN Frequency Relation/Priority, SIB19 (UMTS àLTE), SIB6 (LTE à UMTS), IFHO – Load Balancing, PCI collision, RET working properly,

·Close-out reports across the NTX Sub-markets (1C, 2C, 3C & NSB’s)

·RF parameter change Cell Level according to consistency checks and needs on the way of the Roll-Out through WinFIOL and/or GUI

·Weekly customer meeting to report optimization efforts, next actions, worse offenders and possible trials.

LTE & WCDMA In-Building Tuning and Optimization

·Tuning and Optimization of several In-Building Solution Projects on 3G and 4G like Dallas Cowboys Stadium, AA Center, Perot Museum, etc.

·Verification of proper HO between Macro sites and Indoor cells, proper coverage per area/zone, PCI per zone.

·Sanity check and audits for each cluster to be optimized e. g. RSSI, VSWR & alarms verification and audits (PLMN Reserved/Cell Barred/ Admin/Op State

WCDMA NPI for the NTX Market

·Audit, Monitoring & Optimization on the worse market RNC’s in order to improve CQI metric.

·Temporal RF parameters adjustments according to site alarms that could have a negative impact on CQI network’s performance.

·Test and monitoring of Field Guide Alerts at RNC level to later be implemented across market.

·Weekly customer meeting to report optimization efforts, next actions, worse offenders and possible trials.

WCDMA DAS Monitoring & Optimization - Special Events

·DAS Monitoring & Optimization on several venues like:

·                        Orange Bowl, BSC Final at Sun Life Stadium 2013 with 72,073 attendants

·                        Formula 1 @ Austin, Tx for three consecutive days with 117,429 attendants

·                        Colleagues Stadium (TCU, Floyd Casey, Soldier Stadium, Texas Tech, Cotton Bowl) with more than 70,000 attendants

·                        NFL Stadiums (Dallas Cowboys, BoA - Carolina, Reliant-Texans, Mercedes Benz – New Orleans) with more than 90,000 attendants

·                        Music Festival Events (SXSW) with more than 72,000 attendants

·                        The biggest 3G DAS System in all USA at Dallas Cowboys’ Stadium at the Super Bowl XLV with an attendance of 103, 000 people.

 

WCDMA Network Roll-Out for 3^rd and 4^th carrier

·Network Roll-Out processes to deliver the network at a minimum KPI´s required by the customer for the 3^rd and 4^th Carrier.

·RF parameter change Cell Level according to consistency checks and needs on the way of the Roll-Out.

·Status of sites, alarms and parameters neighbor definitions, scrambling code, CPICH power, etc.

·Analysis of Drive Test (Scrambling Code, Handover-Soft, Softer & Hard- Signal strength –RSCP- Levels of noise –Ec/No-, etc.)

·Post. Processing, recommendations and reports of Drive Test data in order to verify the performance of the different services (HSDPA, AMR, CS64, ISHO)

·Weekly customer meeting to report optimization efforts, next actions, worse offenders and possible trials.

 

Nokia Siemens Networks México

Telefónica México Moviles – Telefónica WCDMA 1900 & 850 MHz Design, Network Roll-Out.         January 2010– June 2010

Team Leader - Senior RF Consultant.

 

WCDMA Network Roll-Out

·Network Roll-Out processes to deliver the network at a minimum KPI´s required by the customer.

·Coordination of drive test, RF engineers as well other departments like RNC, IP, CORE and Field Engineers to achieve every task on time and with quality under a friendly environment work.

·Change of radio and traffic parameters at Cell Level according to consistency checks and needs on the way of the Roll-Out.

·Status of sites, alarms and parameters neighbor definitions, scrambling code, CPICH power, etc.

·Analysis of Drive Test (Scrambling Code, Handover-Soft, Softer & Hard- Signal strength –RSCP- Levels of noise –Ec/No-, etc.)

·Post. Processing, recommendations and reports of Drive Test data in order to verify the performance of the different services (HSDPA, AMR, CS64, ISHO)

WCDMA Design

·             RF Data fill creation according to the requested services

·Site Survey, verification and coordination with the field team

·Model tuning, coordination with the RF Planning Engineers

·Model Calibration

 

Telcel – America Movil WCDMA 850 MHz Design, Network Roll-Out and Optimization.                May 2007– January 2010

Team Leader - Senior RF Consultant.

 

WCDMA Optimization

·Monitoring of CE and Tx usage for possible upgrades on resources (2^nd system module and/or Iub capacity)

·Solutions to special customer request, like commercial launch and VIP events.

·Neighbor Optimizations for indoor and outdoor cases, intersystem and 3G-3G neighbors relations

·Optimization of KPI´s, to reduce number of drops calls, improve coverage by reducing interference (Ec/Io), recommendations and changes on RF and RNC parameters levels using Plan Editor.

·Analysis and solutions to user’s complaints.

·Analysis of Drive Test events (HO, Call Setups, Releases, Drops, etc.) and L3 messaging using Actix and NEMO Analyze.

·Technical recommendations to achieve at least minimum acceptance KPI´s (Change Design, parameter settings base on Drive Test).

WCDMA Network Roll-Out

·PAC & FAC(Partial and Final Acceptance Certificate) processes to deliver the network at a minimum KPI´s required by the customer.

·Coordination of drive test and RF teams to achieve every task on time and with quality under a friendly environment work.

·Change of radio and traffic parameters at Cell Level according to consistency checks and needs on the way of the Roll-Out.

·Status of sites, alarms and parameters neighbor definitions, scrambling code, CPICH power, etc.

·Analysis of Drive Test (Scrambling Code, Handover-Soft, Softer & Hard- Signal strength –RSCP- Levels of noise –Ec/No-, etc.)

WCDMA Design

·             RF Data fill creation

·Site Survey

·             Monte Carlo Simulations based on an alive GSM network (AMR & EDGE traffic).

·Model tuning

 

Ericsson Dominican Republic

Claro GSM 1900 MHz Network Roll-Out and RF Optimization. April 2007– May 2007

Senior RF Consultant.

 

GSM Optimization

·Change of radio and traffic parameters at BSC/Cell Level accordingly to the needs to maintain and improve KPI performance.

GSM Network Roll-Out

·Sites status, alarms and check of RF parameters, neighbor definitions, etc.

 

Ericsson USA

Cingular Wireless WCDMA 1900 MHz Network Roll-Out and Optimization.          June 2006– January 2007

Senior RF Consultant.

 

WCDMA Optimization

·KPI´s optimizations, to reduce number of drops calls, improve coverage by reducing interference and parameters recommendations.

·Analysis of Drive Test events (HO, Call Setups, Releases, Drops, etc.) and L3 messaging using Actix and TEMS Inv.

·Technical recommendations to achieve minimum acceptance KPI´s (Change Design, parameter settings base on Drive Test).

WCDMA Network Roll-Out

·Status of sites, alarms and parameters neighbor definitions, scrambling code, CPICH power, etc.

·Analysis of Drive Test (Scrambling Code, Handover-Soft, Softer & Hard- Signal strength –RSCP- Levels of noise –Ec/No-, etc.)

 

NTX Cingular Wireless GSM&EDGE 1900/800 MHz Optimization & Cabinet Expansion.     November 2005 – June 2006

Senior RF Consultant.

 

GSM Optimization

·Up-date of the NTX Cingular’s database for cabinet expansion (Using Remote OMT & Command Handling).

·Definitions of IDB according as the predicted grow traffic per cell.

·Definition and adjustment of RF parameters for the new cabinet expansion and AT&T sites to Cingular  (BSPWRB/T, MAIO, Freq. Hop.).

·Daily meeting with the drive test team to coordinate the activities according expansion on sites.

·Consistency check on RF parameters to assure the well integration of AT&T sites to the Cingular’s  (Using CNA).

·Performance of the KPI after expansion and integration to avoid possible changes not predicted and assure the well behavior of the sites into the new  (using R-PMO, Business Object and MRR).

·             Analysis of Drive Test (Quality, SS, Drop Calls, Worse offender cells, Hand Over).

 

Unicel GSM&EDGE 800 MHz Network Roll-Out & Optimization (RCC Group)July 2005 – November 2005

Senior RF Consultant.

GSM Optimization

·Weekly Regional meeting to share  experience with other markets with similar problems cases.

·Weekly Local Meeting to identify, investigate and report weekly activities and goals according to plan, trial, changes and possible customer complains.

·Change of radio-traffic parameters at BSC/Cell Level accordingly to the needs to maintain/improve KPI performance using WinFIOL.

·Optimization based on reports from statistics (Business Object, MRR, NOX), analysis of Drive Test (TEMS Investigation) and new sites (Activation and deactivation of features as TCC, Extended Range, UL/OL, ACCMIN).

·Optimizations of Dedicated Time Slots according to grow traffic in GPRS/ EDGE vs. Voice traffic. Based on congestion, public events, holidays and customer requirements.

·Planning, implementation and optimization of DYMA & DHA features to give the customer the maximum traffic capacity vs quality.

·Uses of scripts for the faster implementation of the parameter to the whole system, avoiding service interruption.

·Definition of STS Weekly Reports (Business Object)

·Use of STS to define and create reports for statistics using Business Object

GSM Network Roll-Out

·Weekly Reports and Customer Meeting achieving minimum KPI.

·Analysis of Drive Test (Quality, SS, Drop Calls, Worse offenders cells, Hand Over) using MapInfo and TEMS Investigation.

·Change of radio and traffic parameters at Cell Level according consistency checks and needs. Using WinFIOL and Exert.

·Consistency Check of parameters according to CDD using EXCERT, CNA.

·Load of parameters from CDD to the BSC using WinFIOL.

 

Ericsson BrazilNovember 2004 – July 2005

Telemig GSM&EDGE 1800/900 MHz Optimization (Telemig Group)

RF Consultant Engineer.

GSM Optimization

·Change of radio and traffic parameters at BSC/Cell Level according the ’s needs and to maintain and improve KPI performance using WinFIOL.

·Optimization in base of reports from statistics, analysis of Drive Test analysis of KPIs and new sites.

·Post-processing of reports from STS.

·Use of STS to define and create reports for statistics using WinFIOL

GSM Network Roll-Out

·Change of radio and traffic parameters at Cell Level according consistency checks and  needs. Using WinFIOL and Exert.

·Consistency Check of parameters and features according with CDD using EXCERT.

·Load of parameters from CDD to the BSC using WinFIOL.

 

Ericsson El Salvador   September 2004 – November 2004

Telemovil GSM 850 Drive Tester (Millicom Group)

RF Consultant Engineer.

GSM Drive Test

·Drive Testing at Metro Area for TDMA and TEMS technology, comparison between them.

·Cluster definitions and route creation.

·Post-Processing of Drive test

·Drive Test Report and recommendations for  optimization.

 

Ericsson Honduras                  April 2004  –  September 2004

Celtel GSM 850 Cell Planning Network Roll-Out & Optimization. (Millicom Group)

RF Consultant Engineer.

·               Change of radio and traffic parameters at BSC level to improve and maintain an excellent performance of KPI Check of parameter for new sites using WinFIOL.

·               Analysis of Drive Test using TEMS Investigation.

·               Check of parameter for new sites using WinFIOL.

·               Nominal Cell Planning of rural sites and principal towns using TEMS Cell Planner Universal.

·               Neighbor Relations Definitions

·               Frequency Plan For Rural Sites using TEMS Cell Planner Universal

·               Antenna Selection

·               Selection for candidate sites.

·               Sites surveys.

 

Ericsson México.January 2001–March 2004

Telcel GSM 1900 Optimization (With 22 millions of customers and the biggest GSM America’s ).

RF Consultant Engineer.

GSM In Charge of BSC´s Optimization.

·               Change of radio and traffic parameters at BSC level.

·               Recommendations for frequency plan (optimization neighbor relations, frequencies, etc.)

·               Monitoring of indicators of the BSC (drop calls, quality, behavior of hand hover, random access, congestion, accessibility, etc.). Using WinFIOL and ESPA.

·               Recommendations of physical change on sites for a better behavior of the BSC´s. Supported it on predictions with TEMS Cell Planner.

·               Searching and solution of external interference on the system. Using Spectrum Analyzer.

·               Indoors Test (measurements of coverage and quality signal).

GSM New sites integrations to the BSC´s.

·               Site Audit

·               Supervision of radio and traffic parameters on new sites.

GSM Team Leader Network Roll-Out on the several BSC’s at Region 9 (Mexico City and surrounded cities) and Region 5.

·               Ensure basic KPIs to guarantee the Network Roll-Out like: accessibility, HO, Long call and Short call performance, supported on coverage, best server and interference plots.

·               Site Audit.

·               Supervision of alarm sites for a quick solution.

·               Coordination and Interaction with other teams, for example: Delivery sites, Site Audit, Drive Test, O&M.