Engineer Project Manager
Resume:
Rafael Valiente Barroso
E-mail: ******@*****.***
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