The
best way to connect two separate points
to each other is wireless connection.
Because in this way there is no need to
use physical cable and so the problems
such as maintenance and etc. will be
removed.
In the
wireless methods, the last way is radio
connection specially in the far
distances. It means if you can find two
points that can see each other, you can
be sure your data transmission will be
warranted .The radio connection has
large capacity and high speed. Only
optical fiber has capacity and speed
more than microwave link.
One of
the most critical problems in microwave
link is line of sight (LOS). It means
for a certain secure connection between
two points it is necessary that there
may be a complete direct sight but it
may not be sufficient so a suitable
place in GSM view may not be suitable in
microwave view. This problem will grow
up when you use upper frequencies in 2
GigaHz or higher.
Therefore
in a good site survey both of BTS and
microwave survey must reach an
agreement. It is clear that these two
fields need different engineers with
different skills.
But some
of the activities will be equal in both
fields like as finding the coordination,
getting panoramic pictures and etc. in
microwave survey it is too important to
find the other end. In a good position
that in the direct route there are no
obstacles and some obstacles can not be
seen by digital maps link as the other
towers in the way.
So
microwave survey engineers use their
telescopes to check the rout and compare
the actual route information with
nominal information to find the best
location and if they can not see the
other end they may use light flashing or
sun light mirror to make sure about LOS
