Time
31 hours 29 minutes
Difficulty
Beginner
CEU/CPE
30

Video Description

Wireless Standards: Channel Bonding and MIMO This lesson covers channel bonding and multiple input, multiple out (MIMO). Channel bonding allows for the bonding of two wireless channels. With multiple input, multiple output (MIMO) different channels send and receive.

Video Transcription

00:04
So lastly, we have two functions of our 802.11 in standard notice, channel bonding and memo. Now, Channel Bonding and Mimmo are additional functionalities of the attitude at 11 in standard that give us increase usability and essential, just better use
00:20
of our wireless network. Interface cards are wireless access points
00:24
in the link between the two. By utilizing these features now, our channel binding is going to be an attitude again, an attitude at 11 in feature that is going to allow for us to bond to wireless channel Spectrum's together. So what do we mean by we sit by when we say that? Well,
00:43
if we're enabling channel bonding and we pop open a wireless spectrum Ah, wireless spectrum analyzer essentially software that we insult on our on our laptop that looks and sees what the air looks like for a SW far as our wireless frequencies go, we'll see.
00:59
Well, we'll see our chart.
01:00
It's gonna show us our 1234
01:06
five,
01:07
6789 10 11
01:11
12 13 and 14 We can't use
01:17
on a standard non channel bonding set up. We would choose either channels one,
01:23
six or 11
01:25
and then say, if we chose Channel six,
01:30
then our spectrum would look like this.
01:33
It would cover 456789 That would be what are spread looked like for our for our wireless frequency. Channel bonding is what occurs when in our attitude. 11. In standard, where our wireless device utilizes. Instead of using this spread of 22 megahertz,
01:53
it's going to utilize the spread of 44 megahertz
01:57
so it won't use the 22 megahertz
02:00
it'll use. Actually, that one is 20 megahertz, the blackest 22 megahertz.
02:06
It's going to use a spread of 44 megahertz. So if we set up channel bonding, we would utilize chance, for example, channel one and six.
02:15
So are spread
02:16
would look like this
02:20
on B r 44
02:22
megahertz spread.
02:23
So no mega wireless.
02:27
Um,
02:28
now
02:29
this channel bonding essence where we have it here, shown as the as this one giant spread is really just utilizing
02:40
to spectrums
02:46
and then essentially sealing the gap and just using everything
02:51
so he's using an entire 44 spectrum are 44 megahertz spread,
02:57
so this essentially doubles our doubles our frequency space. It doubles it doubles the airspace, doubles the wavelength, the wavelengths that we can send and receive, send and receive data on so it can double our throughput.
03:14
That's why, with our 802.11 in we talked about, we could have a max throughput if we were using channel bonding
03:20
of 300 megabits per second, which is a world away from our next best standards are a in our
03:28
G standards, which could use 54 megabits per second. That's almost four times. That's almost theoretically in a perfect world, four times the speed that we would be getting it. We're using all the additional features of attitude at 11 in our channel bonding being one of them. So
03:46
channel bonding is also useful feature if we're noticing a lot of interference in our environment. If there's a lot of other devices that are utilizing the same airspace is us and they're single channels, we may be able to get an attitude 11 n device and set up this channel bonding and utilize Maur of the frequency space.
04:04
So even though some of our frequencies are will still have some interference with those other devices
04:10
because we're channel bonding and we're taking up such a big chunk of spectrum we're going to have. We're gonna notice less interference on our actual devices because we're simply just overwhelming. Some of the channel space
04:21
is also going this channel bonding is also going to give us again. The ability to push through more data quicker because it's taking is making the use of two channels are making these of to Channel Spectrum's as one rather than using. Essentially half were using 44 megahertz of space rather than 22 megahertz
04:43
and the next we have memo now Memo stands for multiple input, multiple output and it's it's what we're going to do if we have a wireless access point.
04:55
And this wireless access point has different antennas
04:59
for sending and receiving.
05:02
So we have our right antenna here that is only going to sin data.
05:08
It was only going to send packets out,
05:11
and then we have our left antenna that's going to receive packets
05:18
so we have to separate antennas, one for input, one for output, and this is going to help us Thio be able to have our better speed, better connection with our wireless access point because it's going to be able to receive data at the same time that it's sending. It's not gonna have to wait and then send and then waited, then sent.
05:36
Now our multiple input multiple output again is a is a,
05:42
uh
05:43
is a function of our attitude at 11 in Standard, and it's not just
05:46
limited to one and one. We aren't just limited to one input, one output. We could have
05:53
as much as,
05:56
well. We could have even up to
05:58
three output in tennis. So 123 output
06:03
and then three input 123 input in tennis.
06:09
So
06:10
just keep in mind that these extra intent is don't come for free. We don't get to upgrade for just the goodwill of the wireless access point maker. They will what we decide to purchase, which how extensible are multiple input, multiple output is,
06:28
And if we have the channel bonding function is going to be a feature of our wireless access point
06:32
eso. It's additional features that we need to be aware of when we're making our purchasing and set up decisions, and it's a dish additional options that we need to be aware of if our wireless network is slowing down or why it works. There's Maurin Perfect parents being introduced, so we need to have other ways other than switching frequencies
06:51
or adding more wireless access points to overcome that.
06:55
And two of the ways we can overcome that is a decent are 802.11 in standard is going to be through the use of channel bonding and multiple input multiple output.
07:04
So thank you for joining us here today on cyber dot i. T. Today we talked about some of our different wireless standard components, such as our differences between our A B G and in wireless standards, as well as how those standards utilize the 2.4 gigahertz frequency band and the five Giga Hertz frequency band.
07:23
We went a little bit deep, and we talked about how are different frequency bands actually function
07:29
on the wave length and frequency level, and then we talked about the different channels that we can use in the frequencies, such as our 2.4 channels 16 and 11 on. Then finally, we wrapped it all up by talking about channel bonding and multiple input, multiple output and how we can use those in order to better suit our network and make it
07:47
work a little bit better and run a little bit faster.
07:50
So hopefully this information will help you to better set up your wireless networks and understand how our wireless standards work. And when you're selecting your wireless router, wireless adapter and your your computer, so hopefully we'll be able to use that and hopefully we'll see here again next time on Cyber it out, I think.

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