Wireless Standards, Channel Bonding and MIMO

Video Activity

Wireless standards, Channel Bonding and MIMO This lesson covers wireless standards, channel bonding and multiple input, Multiple Out (MIMO). Wireless standards are managed by the IEEE 802 regulation which specifies how to use different frequencies. A wireless access point (WAP) and the wireless network interface card must be compatible in order to ...

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Time
31 hours 29 minutes
Difficulty
Beginner
CEU/CPE
30
Video Description

Wireless standards, Channel Bonding and MIMO This lesson covers wireless standards, channel bonding and multiple input, Multiple Out (MIMO). Wireless standards are managed by the IEEE 802 regulation which specifies how to use different frequencies. A wireless access point (WAP) and the wireless network interface card must be compatible in order to communicate. This lesson also covers channel bonding which is used only by 802.11n and allows to wireless bands to be bonded. Participant also learn about multiple input, multiple out point, which has utilizes different antennas for sending and receiving.

Video Transcription
00:04
So now that we've taken a look at our different wireless frequency, now we now we need to know are different. Wireless standards now are different. Wireless standards are the different compatibility ease and the different types of wireless data that will push out over our over our frequencies.
00:23
So
00:24
our wireless standards are managed by the 802.11 the IEEE 802.11 regulation, which specifies all the information for how these frequencies pass and how the wireless network interface cards and how the wireless access points work in order to push these frequencies.
00:41
When we are using these different, we'll talk a little bit about their wireless wireless standards compatibility, ese.
00:48
But just we just need to know are one of the most important things that we need to know is that a wireless access point and the wireless network interface card have to be compatible with A with a standard in order for the two to be able to talk. If there's a wireless access point that on Lee runs at 802 to 11
01:07
0.11 a
01:07
in a wireless network interface card that only works at 802.11 be. The two devices cannot talk,
01:15
so we have to know understand how these different wireless standards work and how they communicate with each other.
01:21
So our first standard we have is a tow to 0.11 a. Now 802.11 a is a standard which functions at 54 megabits are megabytes per second,
01:32
but we can on Leigh push through at 55 Giga Hertz frequency. So 802.11 a isn't a very popular frequency because of that fact, because it pushes over the five megahertz range so it has a reduced has a reduced area that it can actually transmit over.
01:51
Our second frequency is 802.11 b 802.11 b is going to be our royalist standard that pushes out at only 11 megabits per second, but it's going to be a 2.4 gigahertz standard.
02:04
So whereas our attitude 11 A is a five year hurt standard to toe to toe 11 B is a 2.4 gigahertz standard,
02:10
so it's more popular than our five year hurts because of the increased range that we can push out our signal over.
02:17
Next we have our 22.11 g r 802.11 g
02:22
is 54 megabits per second max matching our $82.11 n, and it's going to push out over a 2.4 gigahertz frequency.
02:30
Now our 802.11 g is backwards compatible with our 22.11 be. So if we have a network interface card that runs at 802.11 be in a wilds access point, that is be slash g compatible are runs at b slash g.
02:49
Then it will be able to run at that attitude at 11 b.
02:53
Now the limitation there as our wireless is our wireless network card.
02:58
If our wireless access point is able to push out at G Standard and is able to push out 54 megabits per second and is able to Max, then we're now throttled down to our 11 megabits per second. Because of our network interface card. We're gonna use the lowest common denominator there when we're talking about compatibility standards,
03:19
but typically are devices that run at 802.11 g are backwards compatible to be
03:24
B, B and G devices be *** devices are not compatible with a 22.11 A. Mostly because of this frequency setting,
03:37
the 2.4 frequency band is not compatible at all with the 555 year Hertz frequency band.
03:45
Next we have our last. We have our most modern standard. Our most modern standard is going to be our 802.11 in. This is a standard that we're seeing gained momentum in popularity, and this is because we can. We have a lot of additional features that we're gonna talk about that we can use with 802 11 in, That's it.
04:03
Channel bonding in a memo
04:05
and with a 22.11 in well with channel bonding, we can reach up to 300 megabits per second max transfer rates. Now this is our remember. This is our hypothetical Max that we could push out with this interference and range and all that can vary.
04:23
But our attitude at 11 in
04:26
it's typically going to be compatible with all of our other network interface cards. So if we have a computer that has an attitude at 11 in card and we are, we have a We actually have a wireless access point that is a 22.11 in and then network interface cards that may very
04:45
our wireless access point will be able to be backwards compatible with G B and ES
04:50
because our 802.11 in devices can push out at 2.4 or five gigahertz or both.
05:00
We may have devices are 802.11 in cards. If they're pushing out at 2.4 and five gigahertz and they can be pushing out at both at the same time, we can have a network interface card that is an end standard, which is receiving both 2.4 frequents sees and five Giga Hertz frequencies at the same time.
05:18
And we can also implement channel bonding and memo to reach
05:21
these hypothetical maxes of up to 300 megabits per second.
05:26
So, no, these standards keep them in mind. If you see test questions asking you like things such as, um
05:33
A A. A network team is installing the most recent or the top of the line wireless cards in these in these computers, and we want to set our router toe on Lee. Talk with one of these standards. What Standard should be set it to.
05:53
Then we're talking about the end standard.
05:56
That's our top of the line. That's our most recent. If we see if we see a certain quite question that refers to what is the Max throughput rate of 802.11 a. Then we would want to know that that's 54 megabits per second. And if they saw something that asked us,
06:12
what is a benefit of eight? 2.11 Be over 802.11 a.
06:16
It wouldn't be speed,
06:18
but it would be a distance requirement because our 2.4 gigahertz is going to have a greater distance that it can push over our attitude at 11. A. So no, these no, these different standards. It's great to create a chart, create some flash cards
06:34
and especially no, the differences between the five gigahertz 2.4 gigahertz
06:39
and their capabilities, just as the frequencies which we've talked about earlier.
06:45
So we mentioned channel bonding with a 22.11 in what is channel bonding
06:49
Channel bonding is used only by attitude at 11 in and it allows to wireless bands to be bonded
06:58
are two wireless frequency channels to be bonded in a single band.
07:01
So this this shows a za frequent. When we pull up our wireless analysis software, this shows as a frequency that looks like it's spanning a channels which is essentially is.
07:15
So in our diagram up here
07:18
we have, Yes, I'm gonna cover cover up a little bit. We have our we have our channel range are one through 11 because we're in America and we might have some people knocking on our door
07:32
if we use channels 12 13 or 14. It's okay if our overlap goes into 12 13 or 14 but we can't our 12 or 13 but we can't set to go into 12 or 13
07:44
so we can use channels one through 11.
07:46
Well,
07:48
well, let's say our home used to use just the standard 80802.11 g router,
07:56
and it was running on the 2.4 gigahertz frequency band
08:00
and we set it up on Channel one. Well, if we set up on Channel one, then we would reach over into Channel two and three overlap a little bit
08:09
if we set it up on Channel six. Then when we would reach over into Channel four and five and seven and eight a little bit
08:16
now, we upgraded to goto 0.11 in because we had two neighbors move in, they set upon our same channels that we usedto work on. So when else set up on channel 11 that we're not showing and they were causing some interference, so we got a higher grade 802 11 in router,
08:33
we enabled channel bonding.
08:35
And with channel bonding,
08:37
our frequency covers channels,
08:41
the negative channels
08:43
all the way to channel eight.
08:45
So we're covering channels. 1234567 and eight,
08:52
Which is massive.
08:54
Um,
08:54
we could if we and this is gonna be if we hypothetically set up here in between three and four.
09:01
Now, if we set up on if we channel bonded Channel six and 11 we would cover 456789 10 and 11.
09:09
So, depending on where we set up our channel bon frequency we're covering. Ah, lot more range. This is going to give us more throughput. This is gonna allow us to push through more data and have less interference.
09:22
You may cause a little bit of interference,
09:24
but we're having less interference on our network.
09:28
So
09:30
this is it. This is what channel bonding does It bonds these two wireless bands, and that's why it assists with pushing through, ah, higher rate of, ah, higher rate of throughput.
09:39
Next we have memo now Memo stands for multiple input, multiple outputs, not a cartoon character, and memo is a $802. 11 in component as well.
09:56
Now what memo does multiple input? Multiple output is. It allows us to have different antennas on our wireless access point for sending and receiving.
10:05
It would sort of be like if we set up a port on ours on a switch that on Lee sent data in a port that only received data. And this helps us to speed up our our interactions because we have some intense that are only receiving and some that are only sending.
10:20
You may see this. As you may see this display displayed as two by two or three by three, indicating that we have two antennas for sending and two antennas for receiving
10:31
again this is going to help speed up are sending and receiving process is because our wireless access point isn't constantly. It's not sending data, and Bennett's receiving and then sending and receiving its ableto actually sinned on. Different routers are send on
10:48
different antennas that it receives from using these multiple in tennis.
10:52
So
10:52
no, these different royalist standards A, B, G and N and then know some of the strength of the 802.11 in standard with its two point disability to push out over 2.4 or five gigahertz or both, as well as the ability to utilize channel bonding or a CZ well as memo.
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