Post on 14-Apr-2018
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Radio Frequency Engineering
Asters teams of experienced RF Engineers deliver highly reliable services to our clients. Our RF
Engineers are highly adept at handling the latest RF investigation tools like TEMS Drive Test Kits.
Aster provides the following Radio Frequency Engineering services for all wireless Networks (GSM,
CDMA & WiMax):
RF Planning, Transmission Planning and Network Design CW Drive Tests and Model Tuning RF Survey and Site selection MW LOS Survey and Link Engineering Network Audit Drive Test & Network Optimization Comparative Drive Tests and Benchmarking RF Optimization and KPI Analysis Spectrum Analysis Spectrum Analysis
RF Planning, Transmission
planning and Network Design
Asters RF Engineering Resourcesare well trained to use state-of-the-art
industry standard tools for design,
planning and testing the networks to
ensure that the network design meetsthe network performance objectives
of the customer.
Some of the Network Planning Toolsthat our engineers are trained to used
in RF Planning and Network Design:
Aircom's Asset Planning Tool Forsk Atoll Planning Tool
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Pathloss 4.0 Aircoms Connect Link
Planner
RF, MW LOS Survey and Network
Audit
Asters teams of experienced RFEngineers deliver highly reliable
services for optimal functioning of
projects and services.
RF Survey
The ultimate goal of a RF site surveyby Aster is to acquire ample
information to determine the numberand placement of access points thatallows optimal coverage throughout
the facility.
RF site survey is carried out in thefollowing steps:
Collect list of Nominals to besurveyed, from the customer.
In case of new town surveys
where Nominals are notprovided, Aster will survey
the town and provide a
nominal for suitable sitelocation
Use the survey reporttemplate forwarded by the
customer
Identify physical location ofthe proposed nominal and
locate 3 candidates
(maximum) for each nominal,as per search ring size
suggested by the customer
Survey the site for RFsuitability
Record Latitude andLongitude, building heightetc. of the proposed
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candidates
Estimate and provide requiredGSM Antenna heights andorientation, proposed tower /
pole location (s) will also be
marked on a rough sketch ofthe building (rooftop) orground site (for each
candidate)
Take site photographs (360degrees panoramic view and
building / site elevation) for
each candidate as given in the
survey template by you
Record physical addresses ofthe candidates and site owner
/ manager contact details(where available)
Complete the Site SurveyCandidate evaluation report
Line Of Site (LOS) Survey
The ultimate goal of LOS survey is to
have MW connectivity between the
two sites to ascertain the Line of Site
clearance. The LOS survey is carriedout physically checking the terrain
between the hop and selecting the
sites for acquisition. The survey is
highly critical because any failure inLOS can lead to a delay in project
and a subsequent loss on account.
LOS survey is carried out in the
following steps:
Collect Nominals of proposedsite and those of the nearest
locations to which customerproposes the LOS
connectivity & Verification
Record latitude, longitude,building data, obstruction dataand surrounding terrain data
on the LOS Survey template
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from the collected statistical data,
locate root causes and recommend
possible course of action andNetwork modification if required.
A detailed report of the findings ofthe audits and analysis of the data iscompiled and presented to customer's
engineering team for initiating
necessary corrective actions andproactive measures for future
expansions.
Our Network Audit services
include
Collect the data of the existingnetwork from the customer
Verify the data obtained withthe site data on field
Note the deviations if any andinform the customer through
audit report
Recommendation of possiblecourse of action and Network
modifications, if any for
optimum performance of thenetwork
Compilation and update ofNetwork data for Network
expansion, operation andmaintenance
Drive Test is conducted for checking
coverage criteria of a cell site with RF
drive test tool. The data collected by
drive test tool as Log files is analyzed to
evaluate various RF parameters of the
network.
Drive Route and Site Data for thesites to be driven is taken from
customer
Drive Test LOG File of thespecified Drive Route / Site is
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saved and the same will be
handed over to customer at the
end of the day
DT Resource identify routinefield optimization issues likecable swapping, missing
neighbors etc., and rectify the
same with the help of the
customer
Optimization is carried out in the
network to
Minimize the call drop and RFinterference in the network
Increase the indoor & outdoorcoverage and better speech
quality
Network Optimization Tools Used are as
the following:
TEMS Investigation Agilent E6474A Neptune CDMA Air Interface Tester (CAIT) TEMS DeskCat Actix Analyzer
RF Optimization
Aster offers RF OptimizationServices for existing/new GSM and
CDMA network operators. Thisservice is performed as a continuous
RF engineering activity for
preventive maintenance. It ensuresoptimum network performance to
meet the Quality of Service (QoS)
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targets of the customer.
Quality of Service (QOS) targets asper the Operators specifications:
Coverage of Service Area:Urban, Suburban, Roads or
the Rural areas
Call Success Rate Minimizing Handover failures Rx quality Improve Speech Quality
Index for higher Networkquality
Satisfied customers resultingin low churn
Efficient network utilization
Reduced investment costs andincreased revenue for thecustomers
KPI Analysis
Key Performance Indicators (KPI)
are a measure of successful network
performance and its quality. Withgrowing customer base and
continuous addition of capacity and
coverage sites, operators need to
continuously monitor the KPIs oftheir network to assess service
quality. Asters experienced team of
RF engineers are highly capable ofproviding regular KPI collection,
analysis and customer presentations.
Aster has a remarkable track
record in providing In-building
solutions in RF planning, design,
installation and commissioning.
Our project managers oversee
every aspect of system design,
installation and testing for the
acceptance of the customer.
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We are capable of providing the
following In-building solutions:
RF planning and design Installation of RF cables and
distributed antennas
Coverage test Installation of Repeaters Installation of BTS & MW