Wi-Fi 7 Unpacked: Cutting-Edge Innovations and Real-World Applications for Enthusiasts and IT Pros

[Music] e [Music] hello my name is LOL Vanderpool and this channel is dedicated to it students it professionals and anyone who enjoys learning technical [Music] subjects we are going to be looking at Wii 7 the new standard that was released in 2024 we are not going to sell any products in this presentation but what we are going to do is look at the new technology and features that come with Wi-Fi 7 we're also going to be as practical as we possibly can if you don't understand Wireless you're going to waste your money buying products and trying to make it work I'm not saying it won't work but you're not going to come anywhere close to making Wi-Fi work properly in your home or small business if you don't understand how Wireless works so we're going to be very practical not sell any products and talk about Wi-Fi 7 and what are some of the features that really might be GameChanger Wi-Fi 7 Builds on the news April 23rd 2020 the FCC released a huge chunk of 6 gigahertz Spectrum to unlicensed Wi-Fi users that allowed manufacturers companies to start using the 6 GHz Spectrum for wireless that was a huge change remember this was right in the middle of covid so it was an absolute necessity since so many people were working and going to school and doing everything from home the i e started working on Wi-Fi 7 back in July of 2018 and it wasn't released until 2024 we had Wi-Fi 6E released very quickly so that we could take advantage of that 6 gig Spectrum but none of the standards have had time enough to allow the engineers to look at this new spectrum and really make the best use of it now the next standard that's coming is Wi-Fi 8 it's 802.11 BN Wi-Fi 7 is 80211 be people often don't understand Wireless the fundamental protocol That's the basis for all Wireless is called carrier sense multiple AIS collision avoidance it's big acronym but what it's saying is that wireless operates at half duplex just like a walkie-talkie only one person can talk at a time we hoped that Wi-Fi 7 would introduce full duplex with which will be a huge benefit in Wireless but it was not included in the Wi-Fi 7 standard we're now looking at Wi-Fi 8 hopefully full duplex will be involved in Wi-Fi 8 I want you to look at this chart we see WiFi standards from 2007 Wi-Fi 4 2013 Wi-Fi 5 Wi-Fi 6 Wi-Fi 6E and now Wi-Fi 7 and if you look at the bandwidth that has been proposed for each of these standards you can see 7 gigs at Wi-Fi 5 9.6 gbits in 2019 with the introduction of Wi-Fi 6 and of course this whopping 36 gbits per second in Wi-Fi 7 the problem is you buy these access points and you buy the products in your home and they don't come anywhere close to these values that's what you you have to understand if you want to understand Wireless just for an example if you've got a new phone and it touts the fact that it has Wi-Fi 7 support and you're thinking you're going to get 36 GB download on your mobile phone you're not understanding Wireless you might get 36 GB download on this phone but the battery will be dead in 2 minutes so it's so important to understand Wireless and the plat forms that we use it on so that your expectations are [Music] correct so Wi-Fi 7 is also known as extreme High thorough put EHT in networking they love acronyms it's going to have 320 mahz channels and I'll tell you why that doesn't mean a whole lot it's going to have multi-link operations and I'm going to spend some time trying to explain this technology and hopefully it will pan out like everyone hopes it will we don't have time yet enough with this standard and products to know whether this is really going to work like it says it is 4K quam this is a great way of getting more bits per second the trouble is you have to have a very good signal for 4K quam and you might get it in the room where your access point is at if you have to go through a sheetrock wall the room next door to your access point you're not going to get 4k qualm this is what I mean about the Practical understanding of Wi-Fi if you don't understand it the features are great on paper but once you get this equipment out in the real world you find out that some things just don't work like they expected [Music] [Music] if you're thinking Wi-Fi is simple stop Wi-Fi is so complexed now honestly LTE and 5G are probably more complexed but Wi-Fi especially Wi-Fi 7 has added a layer of complexity it's pretty mindblowing take a look at this graphic focusing on a center on the center at the bottom we see the phy this represents the physical layer OSI layer one above it is the Mac it's a small block it's going to have OSI layer to this is your data link layer and what they have done is they have broken out the architecture that is found in the the new Wi-Fi 7 layer 2 look at it it's pretty astonishing you have a blue section called multi-link operation it's at Layer Two and it breaks out into this complex architecture that's going to handle mlo which we're going to get into and then myo if you go to the bottom in red there's a whole block diagram of architectural changes in myo then we have multi- AP coordination over in purple and then we have some granular and process method which I believe some of these have not changed across standards this is not radical changes the changes are in those upper layers in the Mac or layer 2 then if you look at physical layer we have support for 4K quam we have things like yeah I didn't write these preamble puncturing we'll get into that multi- support which is going to allow access points to better and more efficiently handle multiple users this is a typical design of a WiFi 7 access point look at the S so Chip BCM 67 263 s so this is a massively complex chip that handles only 6 gig then you're going to have another very complex radio chip BCM 6726 and it's going to handle just 5 gigs and we see there's a chip dedicated to 2.4 you're going to have chips dedicated to 10 GB Wan connections and then you've got this BCM 4916 which is a quad core arm processor designed specifically to tie all this together USB LEDs Ram that you're going to put in your access point these things are going to be incredibly complexed now the first generation of chips that make up your access point just be aware of their beta there's going to be problems they're going to find in their initial designs and a year later these chips are going to change be aware don't go out and buy necessarily the first generation of Wi-Fi 7 I'm not going to say it doesn't work but a lot of debugging and problems are going to be solved and they'll be fixed in the second generation of silicon that's used to build the next generation of Wi-Fi 7 one of the new features of Wi-Fi 7 is the option of 16x16 multi-user myo can you imagine an access point with 16 antennas so that it can support 16x 16 multi-user myo I I don't think we're going to see 16x 16 multi-user myo the key to all these Technologies Wi-Fi six Wi-Fi 6E Wi-Fi 7 are the support of the Silicon manufacturers Qualcomm broadcom mediatech their RF Engineers which are amazingly bright people are the ones who are designing the Silicon that we put in our consumer products and our Enterprise Products here's one for laptops and probably mobile phones here on the fastconnect 7900 s so Chip it has a 6 GHz radio that is going to hopefully give you 5.8 gbits per second and it also has a 5 GHz radio that's going to give you 4.3 gbits per second this is realistic for the first generation this is a quadcore arm s so from broadcom for residential Wi-Fi access points routers and extenders keep in mind silicon is produced for retail and their silicon produced for Enterprise mediatech is another silicon manufacturer of both retail and Enterprise chipsets for [Music] wireless yes Wi-Fi 7 is going to bring lots of cool features better speed all of that but keep in mind it's all about that 6 GHz Spectrum if we didn't have that addition of 6 GHz Spectrum we wouldn't have a Wi-Fi 7 this is going to bring such new innovation for environments that are crowded and dense like like airports Sports Arenas large retail complexes that are trying to put Wi-Fi everywhere this is where the 6 GHz Spectrum really shines we will gain things like lower latency we will get the ability to offer what's called time sensitive networking but it's that 6 GHz that's making all the difference let me show you an example one of the problems that warehouses have especially very very large warehouses I live in Central Florida it's one of the capitals of warehouses we have warehouses 30 m up and down I4 they're huge warehouses and they have robots working with people in these Mammoth warehouses these robots are all Wi-Fi controlled and with just 5 gigs in 2.4 it's a nightmare to control all these robots that they're using in the warehouses but the minute you put a Bridge radio on there so that they now can talk to six gahz you've got this huge spectrum that just eliminates so many problems for the it professionals that are communicating and working with these robots hospitals are another area that are starred for bandwidth 5 GHz 2.4 are just packed and crammed and when Medical applications come out that really need more bandwidth more high-speed thorough put it's just not there my mother went into surgery and she was in the emergency room and she had been been taken care of by the nurses and enrolled something like this it was battery powered it had a monitor and a camera and she was able to communicate with the doctor with this portable batterypowered communication station a doctor could have been in a larger hospital nearby or whatever but this type of high definition high bandwidth demanding medical application can easily work with 6 gigs now 6 gigs is not without its own problems this is the Spectrum for six gigs but notice the section below it these are called incumbent systems these these are systems already have been approved by FCC to use 6 gigs things like police have got a section of this 6 GHz or fixed services such as point-to-point back haul links there's also satellite Communications from Earth to a satellite and back that are also going to be impacted by the use of Wi-Fi in the 6 GHz Spectrum there's mobile services and Ultra wideband services as you think about using WiFi 6 Outdoors there are going to be restrictions so that you don't conflict with incumbent systems that are already approved Outdoors for 6 gigs Bottom Line 6 GHz transmission Outdoors restrictions 6 GHz transmission indoors no problem let's continue looking at the features of Wi-Fi 7 one of them is 4K quality this simply allows you to send more bits per second it is when we send two carrier signals at 90° we are modulating those signals both amplitude and by phase this gives us quadrature amplitude modulation quam is a very popular way of modulating carrier signals to transmit Digital Data digital cable television uses quam cable modems the doxis system uses quam LTE and 5G uses quam Digital radio terrestrial television broadcasting all use quam to modulate their signals and satellite Communications 4K quam simply means we're putting lots of bits per symbol we transmit what's the downside of 4K quam well you have to have a very good signal to noise ratio in other words your signal has to be strong if you're within 18 ft of an access point you probably get 4k quam if your phone or your laptop is further than 18 ft you're probably not going to get 4k quam now if you modify your antenna so that you have a gain of about 4i on your antenna which you can you can get High Gain antennas you can get about 25 ft away from that access point and still get 4k quam multi-link operation is another one of the big features that is new to Wi-Fi 7 I want you to listen carefully to the definition because in the verbage of WiFi they're going to use the term link and in this case we're going to be talking about multi-link operation but I want you to watch very carefully what they're talking about when they say the word link so let's get started with the definition multi-link operation refers to sending or receiving packets currently at the same time on multiple channels in the same bands that means 2.4 gigs 5 gigs or 6 gig band or different bands look at my chart here I've got 2.4 gig band notice I have three channels if I choose 20 megahertz wide channels I can get three channels in 2.4 if I go to 5 gig and I choose 20 mahz channels I can get 25 channels in the 5 GHz band look again at my Low's definition I can send or receive packets concurrently on multiple channels in the same band so multi-link operation could mean I could get a couple channels here in the 5 gig let's say these two channels and come down at the end of the spectrum and get these two channels that's multi-link Operation even though I'm in the same band I could also grab a channel in the 2.4 I could grab four channels in the 5 gig and then I could grab 10 channels in the six gig and all those concurrently send data in different bands so either of those can represent multi-link operation let's step back Wi-Fi 6E we had 2.4 we had 5 gig and we had 6 gig with Wi-Fi 6E you could transmit and receive over 2.4 five or six but one or the other that completely changes with WiFi 7 with multi-link operation and Wi-Fi 7 I now can connect to multiple channels on 5 gig I could connect to multiple channels on 2.45 gig and 6 gig or I could connect to multiple channels on 5 gig and 6 gig and transmit and receive data at the same time now we've been aggregating connections such as if I have two connections to my server say two 10 gig connections to my server I can use Network teaming and combine the traffic of those two 10 gig links and aggregate that data so we've been doing this kind of stuff in in servers we even can do it in desktops today but it's really complex to do it with wireless now one more important definition any device that supports multi-link operation is known as an MLD multi-link device you're going to see that in a lot of literature so just be aware of what an MLD is now before you get too fired up thinking of oh all these streaming connections to my laptop I'm going to have incredible experiences let's get real look at this picture this diagram on the right hand side I've got a phone and it's sitting somewhere in my house and I've got an access point somewhere in the house and there you see the range of 6 GHz shown in the yellow and then 5 GHz range is shown in the blue and then the 2.4 GHz radio does pretty good about radiating out further than the other two bands but my fun phone doesn't see that 5 gigs and it doesn't know 6 gigs exist do you think that phone will ever enjoy multi-link operation not a chance so as we explore multi-link operation and all the Fantastic things that it can do for us look at the reality of wireless and you'll realize unless you have access points close to the devices that need them and they are ml D devices you're never going to use multi-link operation for a long time if you're thinking about a Wi-Fi 7 router one in a small apartment or a small condo where everything is relatively close together you can probably get away with it to a great degree as long as those devices that need that high bandwidth those Wi-Fi seven features you're relatively close by and you don't have a solid brick wall between the access point and the highdefinition TV and let's be honest if you bought this beautiful TP Link Wi-Fi 71 router and put it in your house and you had even a large house your wireless will work it's probably working at Wi-Fi 5 standard level but it'll work it'll work fine but you're going to miss out on all those multi-link operations 4K quam you're not going to have 4K quam so be aware and understand the realities of Wireless as you're purchasing and placing and buying the devices that work with this understand the realities otherwise you're going to be really disappointed look at this heat map for a typical home I've got one router in looks like the living room you can see the red and then it gets orange and then it gets green and it gets blue that is indicating the strength of the signal so if I have one router in a decent size home as I get further I have walls and I get further and further away if I put a highdef TV in that back bedroom yes it will work it'll be pixelated look like SD television coming out of it and it may not be horrible but you're not going to get Wi-Fi 7 features or Wi-Fi six when you're that far away from the access point you're probably going to get Wi-Fi five so why are all the vendors going mesh because they realize this very very well and if you're not able to put access points throughout the home or closer to the devices that need it you're not going to get the benefit of the speed myo multi-link operation beam forming all those great features that give you higher and higher thorough put you're just they're not going to be there so here's an example of one of Wi-Fi 7's features multi-link operation if you had a mesh Network in your home one access point on the first floor one access point on the second floor they are saying this is TP links Deco they're saying that if you're relatively close to any of those access point on the first floor or the second floor you're going to get about 8 or n gig gbits Wireless speed as you get further away from those access points either on the first floor or the second floor you're going to drop down to seven or8 gigabits that depends on how many sheetrock walls are between you and and that access point and on the edge of the home 5 to 6 gbits but that's only if you use some kind of mesh design in your home let's talk quickly about phones if you have a in expensive phone you're probably going to have a single Wi-Fi radio in that phone maybe multiple antennas but a single radio if it's a WiFi 7 chipset in the phone and a Wii 7 access point you're going to see an improvement in thorough put not great but it will be better in higher end phones they're going to have what's called enhanced multi-link single radio where they are going to look at the bands find the best band with the least amount of interference where they get the best thorough put and they'll simply switch to that band if that band gets congested or interference they'll quickly switch to another so again you're going to get better thorough put overall if the technolog is in the phone and in the access point so if you buy premium phones for example Galaxy s23 Ultra had the Qualcomm x70 modem which had a dual radio if it was up to Wi-Fi 7 standards you could now transmit multiband the problem is is how much are you going to want that to impact your battery how vendors will address that we'll just have to wait and see so a quick look at this chart if you have single radios you're going to get some benefits with M if you got multiple radios you're going to get a lot more benefit out of mlo if you have multiple radios and you're using multiple bands one of the mindblowing features of mlo is the switching speed they're able to switch from one band to another at really incredible low latency for example a typical tear down and breakdown of a link you're talking about 100 milliseconds so they have designed the architecture so that you could switch from 6 to 5 to two I don't know why you'd go to two but 6 to five back and forth very fast and keep that latency below 2 milliseconds now this slide I'm being phous here you don't need a generator to run your laptop with Wi-Fi 7 but one of the problems with multi-link operation is if your radios are listening to all three bands you're drawing lots of power so just keep in mind that's going to be consideration by the designers of the equipment and the chipset manufacturers but just be aware that's an unresolved issue in multi-link operation now couple more issues with multi-link operation we have what's known as asynchronous simply means that every band can send whenever and whatever they want but they also have what's known as synchronous transmission that the bands are transmitting data in sync who's going to use that and why that's there we don't understand that right now but that is there another mind-blowing feature of mlo is what's called duplicate mode so I could take my 2.4 gbits radio my 5 gig radio my 6 gig radio and transmit exactly the same thing across all three bands I get incredible potential of reliability forget high-speed data forget everything else if I'm looking for incredibly High reliable data transfer this duplicate mode can provide it who's going to use it I don't know but it's in the standard I just finished two videos one on Wi-Fi standard 6E and wireless mesh Technologies I encourage you if you're interested in Wireless and want to understand it make sure you get the wireless mesh technology and the Wi-Fi 6E standards because I'm going to cover many of those things that are also included Wi-Fi 7 but I've already covered them in Wi-Fi 6E so take a look at that last tip is for my it Pros if you're thinking about taking down those WiFi five access points off your ceiling and replacing them with WiFi 7 here's a couple tips you may want to have to resurvey your wireless radio pattern because there's a difference and you're going to add six gigs and Wifi 5 May behave a little bit different so if you're thinking I'm just going to take these down and put these up you might want to think about that second of all if your switch Port is connected to your access points you want to make sure that you're using at least a 2.5 g Abit per second switch port to your access point at WiFi 7 standards I don't think you're going to need 10 gigs and I'm speaking from watching the CTO of extreme networks he didn't feel like you needed to go to 10 gigs for your access points on Wi-Fi 7 one last thing make sure if you're powering your access points with power over ethernet make sure you re-budget your power because if you don't have enough power to that Wi-Fi 7 access point you got hanging on the ceiling it's just going to reboot all day so if you're getting reboots go back and redo your Poe power budget cuz you're not getting enough power to those access points there are other things in the Wi-Fi 7 standard Preamble puncturing super wide channels 320 MHz wide channels which no no one is going to ever use 512 compressed block acknowledge multiple are used to a single sta this is simply going to allow that access point to be more efficient handling more users triggered Uplink access and inclusion in this standard is the emergency preparedness Communication Service how that actually works I tried digging into this I couldn't get a lot of information but it seems that Wi-Fi 7 standard will allow emergency response teams to take better advantage of Wi-Fi 7 in an emergency just as we saw in Wi-Fi 6E the new standard power access point which is one of three access points can be used both indoor and outdoor much more power but remember the minute you take six gigs Outdoors you are under many restrictions how you can angle your antenna you must have an AFC database to tell you are you interfering with an incumbent existing 6 GHz system so there's going to be a lot more restrictions when you take Wi-Fi 7 Outdoors a little bit more power but you are under some restrictions we love your comments your feedback become a member if you haven't thought about becoming a member become a member it helps us tremendously thanks again to all our members viewers and subscribers you guys are [Music] awesome [Music] n

Channel: TechsavvyProductions

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Id: -VmrD_SL_DY

Length: 34min 21sec (2061 seconds)

Published: Fri Mar 15 2024