Rafael Valiente Barroso

E-mail: abomhz@r.postjobfree.com

Birth date: Sept 22th-1982

Mobile phone 1: +521 559*******

Nacionality: Colombian

Summary

Sr. RF Engineer with more than 8 years of experience.

LTE/UMTS/HSPA/GSM/EDGE network planning and optimization of

radio access network parameters. Fluent in English, Spanish

(native) and good level of German. Capacity of leadership and

multinational teamwork organization.

RF Experience

Aircom - Vodacom LTE Optimisation Johannesburg-SouthAfrica- :

LTE Optimisation

Jan 2103-

. Vodacom LTE commercial, live network, working in the

optimization team, checking KPIs, checking and suggesting

parameters values.

Huawei - Telcel LTE Launch Guadalajara-Mexico- :

LTE Post Launch Optimization

Nov 2012-Jan 2103

. Post-launch process and verifying the planning or design of

the network. Proposing changes in UL power related Parameters

and checking Features like PRACH free contension resolution

in HO and out of sync.

. Consistency check of parameters and the PCI plan and PRACH

plan.

. SON tests and improving the SINR and RSRP of the clusters.

Ericsson - Seoul- South Korea:

LTE optimization team LGU+ project

Oct 2011-Oct2012

. LGU+ LTE commercial, live network, working in the

optimization team, meeting KPIs, checking and solving

parameters issues, wrong planning design, reducing DL

interference and increasing the throughput.

. Creating with the customer the values of Parameters and

Features Baselines.

. VoLTE network performance improvement, defining KPIs with

customer, checking and analyzing of Volte new features.

. Layer 3 signaling analysis of calls, HO, Random Access,

Paging, call setup time duration, RRC connection request and

complete, RAB setup, PS establishment service, etc.

. Meeting the KPIs proposed with the customer, adjusting ANR

parameters to improve its functionality according to the

network characteristics.

. Testing new features on the L12B release, and comparing the

network performance with the L12A

. Features like RRC connection re-establishment and the session

continuity between interfrequencies

850Mhz and 2.1Ghz.

. Checking inconsistencies of features and parameters in the

whole network, alarms and status of the sites. Working on

Ericsson release L12A for 3sectors eNBs Network and 6sectors

eNBs Networks.

. Adjusting parameters values to improve performance: on Idle

Mode, PRACH,HO, ANR, PDCCH,PUCCH, events A2, A3,B1 cell

reselection, etc.

. RF Optimization plans to improve several clusters using ENIQ,

OSS, ITK and Mentum Planet tool.

. Using OSS extracting network data bulk and analysis of

configuration and troubleshooting issues.

. Using Kget data extracted from Moshell checking configuration

and proposing changes to improve performance.

Ericsson GSC- Global center- Mexico City:

LTE RF Planning and design Consultant

May 2011-Sept2011

. AT&T US Market, LTE design with Atoll Radio Planning tool and

Capesso ACP tool, following the AT&T Standard ND-00369 LTE RF

Network design guidelines. LTE initial tunning, pre-launch.

. Designing PCI plans, and checking PCI collisions and

confusions.

. Shake downs reports for new sites launched, identifying

current problems on site like: swap feeders, transmission

unbalance, alarms, VSWR, RSSI.

. Planning and reducing the numbers of servers per area

reducing overlapping zones.

. Optimization of physical parameters like antenna gain,

Vertical and Horizontal Beamwitdh, improving the coverage

area percentage and SINR value reducing overlapping areas

using capesso for atoll tool.

. Stationary test to verify RF conditions, current site data

base, PCI, azimuth, coordinates, DL/UL UDP and DL/UL TCP

throughput.

. RF Validations and Optimization reports to deliver final

acceptance to the customer. RF analysis and recommendations

to fix issues on the Radio Network. Neighbors definitions,

parameters changes.

. Entel Uruguay carrier LTE network design, Initial design

checking the area to be covered and propose the equipment to

be used, link budget.

Huawei - Telcel LTE Trial Mexico- Mexico City:

LTE Trial RF Planning and Optimization Team Leader Consultant

Jan 2011-Apr 2011

. Daily training to the RF Team, cell planning parameters,

random access, LTE air interface, Handover procedure, cell

search, selection and reselection, IRAT with UMTS/GSM, MIMO

ways of transmission SFBC TX diversity and MCW according to

UE speed, SINR, Spectrum efficiency and TX/RX correlation..

. Supporting preplanning of 200 sites, analyzing planning

parameters, with U-Net and Atoll Planning tools.

. Neighbors planning, PRACH Planning, X2 planning before the

use of ANR, PCI planning. Checking Frequency selection

Scheduling and ICIC parameters and the influence of power

boosting over RS signals.

. Checking and analyzing AMS(Active MiMO switching) triggered

by SINR Threshold improving coverage and capacity.

. Analyzing traces and Drivetest of the first LTE call,

checking MIMO behavior, throughput, SINR, Uplink power over

PUSCH.

. LTE network design for Nicaragua Huawei trial of 32 sites,

coverage plots, adjusting LTE design parameters. Simulation

with MIMO tx techniques 2x2 and 4x4.

LTE RF Planning and Design Certification Workshop - Dallas TX

USA:

Nov 2010

. Virtual LTE Network deployment based on Atoll tool: Link

budget calculations for Uplink and Downlink. Coverage

prediction maps (i.e: RSRP, C/I, throughput).

. Exploring Antenna techniques: SFBC Frequency diversity for

users near cell edge, SU-MIMO and MU-MIMO, MCW for good RF

conditions users. Comparison between single antenna and 2x2

MIMO transmitting at same time but different frequency In

order to avoid multipath fading, throughput prediction maps

observing improvement on the throughput by % coverage area

(Atoll).

. Calculation of throughput depending on modulation and number

of retransmissions. Preamble planning using root sequence

index, preamble format and cyclic shift, PCI planning

according to PSS and SSS. Cell selection and reselection

criteria. Inter-RAT events B1, B2.

CLARO - Panama

GSM/EDGE/UMTS/HSPA+, Huawei project

UMTS RF Optimization Engineer

FEB 2010 - JAN2011

.

. UMTS/HSPA radio access network optimization (capacity,

coverage, quality) by checking counters and stats

parameters, neighbor list optimization, Inter-RAT parameters,

checking channel elements, codes, IuB, and power congestion,

R99 and HSDPA Throughput (tools : iM2000, UMTS LMT).

. Optimizing Pilot pollution, high RTWP, Overshooting sites,

missing neighbor relations, SHO success rate. Identifying HW

issues, Drop Calls and access issues.

. HSPA+ parameters optimization, keeping clear RF environment

observing CQI and STATS

. DT measurements data collection, analysis and post-processing

in order to improve CPICH RSCP and Ec/No, due to physical

modifications (antenna's azimuth, tilts, height), or

parameters optimization. (Tools: Actix spotlight, Genex

Assistant, Atoll, UMTS LMT).

. Delivering Clusters performing under the KPIs Thresholds.

. UMTS/HSPA radio access network planning, tuning

propagation models, traffic Monte-Carlo simulation (capacity,

coverage, quality, parameters) using prediction tools such

as Atoll, Genex U-Net

. UMTS/HSPA radio access network KPI's definition and

performance analysis for optimization.

. UMTS/HSPA drive test data collection, post-processing and

analysis for KPIs report generation, and Sites acceptance

reports.

. Optimization using CHRs (call history records) and float busy

hours queries, in tools like: Omstar WCDMA Kylinpro, Nastar

WCDMA.

. Identifying and solving problematic cells, using DT,

statistics and traces.

Perform and analyze traces on a regular basis.

. Drive tests data collection, post-processing and analysis for

KPIs reports generation.

Digicel - Honduras

GSM/EDGE/UMTS/HSPA+, project

UMTS Consultant RF Planning and Optimization

Engineer

SEPT 2009 - JAN2010

. Recommendations of parameter sets for reselection and cell

change based on comparison of scanner and UE measurements to

improve the performance of HSDPA.

. Analysis of Layer 3/2, history of TPC, Mode reports and

others to find the causes of problems around the network for

the different services.

. UMTS/HSDPA radio access network optimization (capacity,

coverage, quality) by DT measurements data collection,

analysis and post-processing, physical modifications

(antenna's azimuth, tilt, height), parameters optimization.

. Perform constant following of KPIs to observe the performance

of the network and coordinate the efforts of the drive test

team to reproduce the problems detected through statistics.

. New sites recommendations based on plots of quality and

statistics, to compensate cases of high load created by the

increasing traffic on the network.

. Coordinate activities of optimization such as cleaning of non-

necessary neighbors, optimization of 3G-3G and 3G-2G

neighbors, check of active set size required for different

sectors taking into account drive tests and statistics.

. Give technical support to test features like Service Based

HO, or Direct Retry.

. Give technical support to solve problems related with the 2G

network affecting the IRAT or cell change.

. Load Balance techniques, Load Reshuffling according to the

amount of congestion.

LHA Solutions Colombia

GSM/UMTS/HSDPA project

UMTS/GSM Consultant RF Planning Network design

Engineer

Apr 2009 - Aug 2009

. UMTS/HSDPA radio access network planning (capacity, coverage,

quality, parameters) using prediction tools such as Planet EV

and TCPU.

. UMTS/HSDPA radio access network optimization (capacity,

coverage, quality) by DT measurements data collection,

analysis and post-processing, physical modifications

(antenna's azimuth, tilt, height), parameters optimization.

. UMTS/HSDPA radio access network KPI's definition and

performance analysis for optimization.

. UMTS/HSDPA drive test data collection, post-processing and

analysis for KPIs report generation.

. GSM/GPRS/EDGE radio access network planning and optimization

(capacity, coverage, quality).

. GSM/GPRS/EDGE radio access network KPI's definition and

performance analysis for optimization (HO success rate, DC

rate, cell congestion, RLC throughput, C/I, MOS, PCU load,

TBF success rate).

. GSM/GPRS/EDGE BSS parameter planning and optimization.

. GSM/GPRS/EDGE radio access network azimuth, tilt, power,

neighbor relationships, FP, BSICs, MAIOs, HSNs planning and

optimization.

. Benchmarking and drive tests data collection, post-processing

and analysis for KPIs reports generation.

. Propagation models tuning.

Digicel Panama

GSM/EDGE/UMTS/HSDPA RF Planning and

Optimization Engineer

Ericsson/Huawei 1900 MHz

FEB 2007 - Mar 2009

. RF Cell Planning support, simulating the coverage of all new

candidate sites and studying the expected traffic depending

on the average population in different places around Panama.

(Initial Tuning).

. Programming some CNA tasks under RNO to analyze the behavior

of some sites checking if they need some optimization

improvements.

. UMTS/HSDPA radio access network planning (capacity, coverage,

quality, parameters) using prediction tools such, TCP (Tems

Cell Planner).

. UMTS/HSDPA radio access network initial tuning and

optimization (capacity, coverage, quality) by DT

measurements data collection, analysis and post-processing,

physical modifications (antenna's azimuth, tilt, height),

parameters optimization.

. UMTS/HSDPA radio access network KPI's definition and

performance analysis for optimization.

. UMTS/HSDPA drive test data collection, post-processing and

analysis for KPIs report generation.

. Optimizing RAN, under OSS checking Dropped Calls, HO

incoming, outgoing and reversions, TCH Drops, SDCCH Drops,

analyzing STS counters also.

. RF Frequency Planning Design Support over some places on

Panama City when network growth was required.

. Coordinating and Supervising Technical Site Surveys (TSS)

with the RF point of view. Drive Testing of new integrated

sites and for Benchmarking.

. Troubleshooting issues during the Drive Test for Initial

Tuning, (Frequency Interferences, Accessibility & Coverage)

. Analyzed Drive Test. With TEMS Investigation.

. Post-processed GSM Drive Test log files using MapInfo and

Actix as a Post-Process tool.

. Checking and requesting some Trouble-tickets for RF network

improvements related to Hardware optimization.

. Using MRR, RPMO checking if some optimization improvements

were required over some cells.

. GSM/GPRS/EDGE radio access network planning and optimization

(capacity, coverage, quality).

. GSM/GPRS/EDGE radio access network KPI's definition and

performance analysis for optimization (HO success rate, DC

rate, cell congestion, RLC throughput, C/I, MOS, PCU load,

TBF success rate).

. GSM/GPRS/EDGE BSS parameter planning and optimization.

. GSM/GPRS/EDGE radio access network azimuth, tilt, power,

neighbor relationships, frequencies, BSICs, MAIOs, HSNs

planning and optimization.

. Identifying and solving problematic cells, using DT,

statistics and traces.

Comcel Colombia

2G/3G RF Planning and Optimization Engineer

NSN 850 & 1900.

APR 2005 - JAN 2007

. RF optimization and cell planning, SC planning design support

using Planet EV as Cell-planner simulator.

. UMTS Radio Network Optimization, checking for amount of

traffic, congestion and Interferences. .

. Definition and keeping KPIs observing the performance of the

network and coordinate the efforts of the drive test team to

reproduce the problems detected through statistics.

. Coordinating Site Survey, Site Auditioning

. Making some re-orientation for new sites (Mechanical and

Electrical Tilts, azimuths).

. Planned Drive Test Routes, study of Benchmarking for

Competitors.

. Troubleshooting issues during Drive Test after new sites

comes to air or Benchmarking.

. Drive Testing Troubleshooting for Benchmarking and for

requested changes on existing sites

. Post-processing UMTS Drive Test log files.

. UMTS/HSDPA radio access network KPI's definition and

performance analysis for optimization.

. Keeping Clusters according to the KPIs Thresholds.

. Physical Optimization, azimuths, tilts.

. Evaluating Site Hunting and Technical Site Survey.

. Validate RF initial designs and assist the early stages of

the deployment of a UMTS/HSDPA WCDMA RAN (TSSs, simulation,

installation, initial parameters tuning and neighbor

relationships definition) alongside NSN, for the main cities

in the Caribbean coast of the country.

. UMTS/HSDPA radio access network planning (capacity, coverage,

quality, parameters) using prediction tools such as Planet

EV.

. UMTS/HSDPA radio access network initial tuning and

optimization (capacity, coverage, quality) by DT

measurements data collection, analysis and post-processing,

physical modifications (antenna's azimuth, tilt, height),

parameters optimization.

. GSM/EDGE radio access network planning and optimization

(capacity, coverage, quality).

. GSM/EDGE radio access network KPI's definition and

performance analysis for optimization.

. GSM/EDGE BSS parameter planning and optimization

Education

. BSc.: Electronic and Telecommunications Engineering -

Universidad del Norte, Colombia, Mar 2005.

. Specialization Course: Telecommunications Systems -

Universidad del Norte, Colombia Jul 2007.

Skills

. Knowledge in Huawei, Ericsson Nokia Technology, equipment

and tools.

. .Experience dealing with Cx and Tx Departments, keeping the

RF mission.

. Working on group as a leader team, creating work plan.

. Excellent interpersonal relations and easy sharing

information among the work team.

. .Experience working with multinational work teams.

. Experience with Initial Tuning and Re-Tuning, Working on

short and long time projects.

. Satisfying customers requirements under RF criteria.

. Advanced English language, basic German and Spanish as a

native speaker.

Seminars and Courses Summary

LTE RF Planning and Design Workshop LTE University. Award

Solutions

. 3GSYSTRA, Nokia UMTS training

. 3GRPLS, Nokia UMTS Radio Planning Specialist

. RANPAR, Nokia UMTS Radio Parameters

. UMTS Planning Optimization by AIRCOM.

. GSM Radio Network Features - Nokia.

. GSM Cell-Planner fundamentals - Nokia,

. GSM Technical Site Survey - Nokia

. UMTS Optimization by QUALCOMM

. Services and safety with Linux - Universidad

Del Norte

. Advanced English - Universidad Del Norte.

. Basic German - Universidad Del Norte.

. Project manager Seminar - Universidad Del Norte.

. Telecommunication Systems and Networking - Universidad Del

Norte.

Software Summary

. Atoll, Mentum Planet 5, Optis, Moshell Actix Analizer and

Spotlight

. iM2000, UMTS and GSM LMT, U-net, Aexio Zeus, Omstar

kylinpro.

. Planet EV, TEMS Cell Planner, ICS Telecom, Capesso,

Ariesso

. TEMS Discovery Windcatcher, and Investigation (Data

Collection and Route Analysis), MapInfo.

. Winfiol, OSS, CNA, FOX RTMP, MCOM, Business Object, ITK

. Genex Probe, Genex Assistant, Nastar GSM, Nastar UMTS,

. Pathloss 4.0, Google Earth.

. Microsoft office Applications

References

Available upon request

Contact this candidate