Site
Survey & Design: We carryout the survey and design
the site before the installation of the towers. Our
approach to executing projects is very simple as described
below:
• Survey the site to plan specific
placing of the various components of the structures/building.
• Test the soil for its bearing capacity.
• Layout plan preparation of the site
Site survey is a physical survey of the customer's premises
or proposed 'Hot-Zone' to identify the best possible
locations to install backhaul equipment and access points
to ensure 100% wireless coverage, along with maximum
performance, within the desired area.
When considering the use of wireless equipment, it is
extremely difficult to predict the propagation of radio
waves and detect the presence of interfering signals
without the use of specialized test equipment. Even
if you are using omni-directional antennas, radio waves
do not travel the same distance in all directions. Walls,
doors, elevator shafts, people, and other obstacles
offer varying degrees of attenuation, which cause the
radio frequency (RF) radiation pattern to be irregular
and unpredictable.
As a result, one should have an RF site survey performed
to understand fully the behavior of radio waves within
a facility or outdoor site before installing any wireless
devices. The goal of an RF site survey is to gather
enough information and data to determine the number
and placement of access points that will provide the
coverage required. Coverage required usually means the
support of a minimum data rate in a given area. An RF
site Survey will also detect the presence of radio interference
coming from other sources that could degrade the performance
of the wireless system.
The need and complexity of an RF site survey will vary
depending on the size of the facility or site and the
work that is to be accomplished.
A site survey is a good idea for the use of any wireless
device because without a survey, users could end up
with inadequate coverage and suffer from low performance
in some areas. The purchase of wireless equipment is
no small expenditure, so it is best not to leave any
portion of the project up to chance.
To ensure the accuracy of the final site survey report
that MAFTEL delivers, only the latest and most sophisticated
equipment is used to check for Signal Level, Noise Level,
and more importantly SNR (Signal to Noise Ratio). After
the site survey, we will design the network infrastructure
to fit your specific needs. Using the information obtained
during the site survey, MAFTEL will design a wireless
network infrastructure for your specific environment
that will ensure complete propagation to each of your
devices.
With wireless systems, it's very difficult to predict
the propagation of radio waves and detect the presence
of interfering signals without the use of test equipment.
Even if you're using omni-directional antennas, radio
waves don't really travel the same distance in all directions.
Instead walls, doors, elevator shafts, people, and other
obstacles offer varying degrees of attenuation, which
cause the Radio Frequency (RF) radiation pattern to
be irregular and unpredictable. As a result, it's often
necessary to perform a RF site survey to fully understand
the behavior of radio waves within a facility before
installing wireless network access points.
The ultimate goal of a RF site survey is to supply enough
information to determine the number and placement of
access points that provides adequate coverage throughout
the area. In most implementations, "adequate coverage"
means support of a minimum data rate. A RF site survey
also detects the presence of interference coming from
other sources that could degrade the performance of
the wireless system.
When conducting an RF site survey, we consider these
general steps:
Visual inspection of the area. Walking
through the area do reveal facts about the site plan.
This is a good time to note any potential barriers that
may affect the propagation of RF signals. For example,
a visual inspection will uncover obstacles to RF such
as metal tanks towers, mountains….
Identification of the user areas its
good habit to mark the areas of fixed and mobile users
on the diagram as well as illustrating where mobile
users may roam.
Determine preliminary access point locations.
By considering the Location of wireless users and range
estimations of the wireless system used, approximation
of the locations of spots that will provide adequate
coverage throughout the user areas will be possible.
Planning for some propagation overlap among adjacent
access points may seem necessary when number of subscribers
grow.
Mounting locations should be considered, which could
be ground or rooftop towers. Recognizing suitable locations
for installing the tower, antenna, cables, and power
line is a vital task in any access point location phase.
Data gathering Once the surveyor is
satisfied that the planned location of access points
will provide adequate coverage; data regarding site
installation peripherals, covered spots and barriers
should be gathered. Panoramic photos of site boundaries
with steps of 45 degrees as well as photos in the direction
of antenna azimuth predictions should be taken to provide
an asset for the site planner. Such photos must be orderly
placed in the site documentation. Data regarding existing
and/or reusable site installations should also be included
in the document. Any reusable container, room for indoor
equipment or existing tower must be listed. The survey
document should also contain information about the area,
environment, site address, ways to access the site place
and available access time to reach the place.
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