First of all we are going to explain what
the term Duplex means . It refers, by
itself, to the ability to send and receive data. Duplex is often used when
talking about conversations over the phone or computer equipment. techqueer
This,
therefore, is the system that allows two-way communications to be maintained,
something that is basic today, as it is able to receive and send messages
simultaneously. digitalknowledgetoday
Now,
the ability to be able to transmit in Duplex mode is
conditioned by different levels. One of these levels is the physical
medium to be able to transmit in both directions, also the transmission system
to be able to send and receive at the same time and finally the protocol or
communication standard that you use.
We
can find different possibilities. Let's see how Full Duplex and Half
Duplex differ. These are two terms that can appear when configuring a
network, especially in systems like Windows, and it is good to know exactly
what each one means and which one we could choose to make the most of the
available resources.
Differences between Full Duplex and Half
Duplex
Full
Duplex
On
the one hand we can begin to explain what Full Duplex means . This
term describes the simultaneous transmission and reception of data through a
channel. A device that is Full Duplex is capable of bidirectional network
data transmissions at the same time. You are not going to have to wait and
verify if it is being broadcast in one direction. healthnutritionhints
In Full
Duplex , as it is translated in Spanish, it has better performance
by doubling the use of bandwidth. An example of the use of Full Duplex is
on a telephone. Here the communication is simultaneous and bi-directional. It
is also present in network switches. smartdiethealth
We
can take as an example a two-way road. Cars can pass through in both
directions . The same happens with communication in
Full Duplex. That is why this transmission mode offers better performance. It
is what we will find in the fastest connections and devices compatible with
them. healthfitnesschampion
Regarding
Internet connections, there is a point to take into account and that is that
wired connections, those that connect Ethernet cables, are Full Duplex. This
makes it possible to obtain better speeds. It basically means that we can
send and receive simultaneously, without waiting.
Half
Duplex
On
the other hand we have the option of Half Duplex . These
types of devices can only transmit in one direction at a time. With this
mode, data can move in two directions, but not at the same time. Therefore
communication is bidirectional, but one at a time. This, as we can
imagine, is less optimal than the previous case.
We
can say that it offers a lower performance compared
to Full Duplex for what we mentioned. An example of how to use it would be
a walkie-talkie. They can both talk, but not at the same time. One
has to wait for the other to finish. They could not establish
communication at the same time, in both directions, as we could achieve with a
mobile phone.
Let's
imagine again a highway with two lanes. Vehicles can go one way and
another, but not both at the same time. In other words, cars going one way
would have to wait for all those going in the opposite direction to pass and
then continue driving. A bottleneck could occur.
These Half
Duplex networks will require a mechanism to avoid data
collisions. You need to check if there is something transmitting before
trying to send something to avoid problems. One device that uses this
option is a hub. We see that there is an important difference compared to
a network switch. It could not serve us in certain cases in which we are
going to require it to be Full Duplex.
The Half
Duplex or half duplex mode is the
one present in Wi-Fi networks. We already know that wireless networks are
increasingly present in our day to day and have improved significantly in
recent years, but they continue to have certain problems in terms of stability
and do not achieve the same speed as wired networks. They are also
required in Internet hubs.
In
this case we may find ourselves with the risk of collision . It
means that more than one user or one device tries to communicate at the same
time but, as we have seen, it is not possible. This can lead to problems,
outages, waiting, and certain errors. This forces to implement a system to
avoid these collisions and that the communication flows correctly.
Thanks
to this system to detect collisions, the devices will detect that there has
been a collision and the transmissions will stop for the necessary time and
later transmit again. This will allow both devices to broadcast at the
same time and generate issues as mentioned. The objective is none other
than to avoid those collisions in the transmission. Therefore, in a system
that allows to foresee this problem, it will analyze before sending the
transmission. In case the channel is free, it will continue; if, on
the other hand, it is busy, it will wait until it is free and that way this
collision does not occur.
Ultimately
we can say that the main difference between Half Duplex and Full Duplex is that
communication goes in one direction or both simultaneously. In addition to
this key difference, the rest is in the mode of use and in the situations in
which we are going to use one or the other option. Some devices, moreover,
can only work in one mode or another. That can be decisive in some
circumstances.
