Gigabit Wi-Fi Summed Up

Gigabit Wi-Fi Summed Up

By CWNP On 02/09/2012 - 20 Comments

At the Wireless Mobility Symposium, I had the privilege of introducing/moderating the discussion on gigabit Wi-Fi and asking a lot of the questions. Here’s my quick summation of the gigabit conversation.

    1. 802.11ac is 5 GHz only. This “limitation” is possibly the most important development because it will bring about a shift in client device support for the cleaner band with more usable spectrum. Mobile devices should adopt quickly if they want to stay “cutting edge” on the spec sheet, and because mobile devices are consumer products, the marketing of speed-based specs carries vast importance. Pervasive client adoption of 5 GHz will improve aggregate performance across the enterprise. 2.4 GHz is a garbage band; Wi-Fi is taking the goods to 5 GHz and leaving its refuse in 2.4.



    1. The IEEE has a “reach for the stars” attitude with the 802.11ac spec. Unfortunately, the marketing hype of “gigabit Wi-Fi” is way overdone. The few features that really drive the maximum data rate up are not immediately, or possibly ever, relevant to the enterprise.



      • Very large channels—certainly 160 MHz, and likely 80 MHz as well—can ruin aggregate capacity, especially with high client densities and lots of 20 MHz only mobile devices. Some experts call these large channels a “gimmick.” Marketing departments love it.



      • The other big data rate boost is more spatial streams (up to 8). As a reminder, today’s products incorporate only 3 (and rarely utilize them all) of the possible 4 spatial streams specified in 802.11n, so the likelihood of ever utilizing 8 is very slim. Adding more spatial streams to real-world products will take a lot of time.



      • MU-MIMO promises better spectral efficiency with simultaneous transmissions to multiple users. However, this feature relies on better support (heck, let’s start with some support) of client beamforming as well as significant queuing modifications, and even then, there are still questions about achieving sufficient signal isolation between target clients. MU-MIMO doesn’t change the raw data rate, but it’s one of those marketed theoretical features that won’t be in the first, or first several, generation of products.
    1. Both 802.11ac and 11ad will be hot in the consumer market, and like previous technologies, will filter into the enterprise as use cases develop. This is especially true for 11ad, which is almost exclusively focused on consumers, but may find niche uses in enterprises. 11ac will be a mainstream enterprise technology, but many of its gains are muted in the enterprise.

    1. 3 out of 4 experts had reservations about the significance of “gigabit Wi-Fi.” The dissenting 1 out of 4 is optimistic. :)

  1. Products will not hit the market until late 2012 or early 2013, so we still have time to wait and let the many marketers beat their drums.

But don't trust me; form your own opinions and let us know what you think. The video is below. Thanks to Devin Akin (Aerohive), Peter Thornycroft (Aruba), Paul Congdon (HP Labs), and GT Hill (Ruckus) for their great commentary at the symposium. Thanks also to Andrew VonNagy for co-moderating.

Gigabit Wi-Fi (802.11ac/ad) Discussed at the Wi-Fi Mobility Symposium from Stephen Foskett on Vimeo.

Tagged with: HP, ruckus, aruba, Aerohive, 802.11ac, 802.11ad, Wi-Fi Mobility Symposium, Gigabit Wi-Fi, Stephen Foskett, Devin Akin, Paul Congdon, Peter Thornycroft, GT Hill

20 Responses to Gigabit Wi-Fi Summed Up

Subscribe by Email
ujan ca Says:
06/08/2018 at 10:57am
free gift code generator and free gift code generator

Maitri Shah Says:
04/24/2018 at 09:04am
The Wi-Fi Alliance has a Hotspot 2.0 web site up, along with a white paper to download free gift code generator

xcv xcv Says:
03/05/2018 at 02:00am

How must nike roshe businesses cheap jordans online whip beats headphones cheap up nike clearance store an beats by dre amazing base company




alice long Says:
02/06/2018 at 00:08am
Sage +1 888 336 0774 community, Intuit Payroll community and Intuit Sage community can be subscribed to free of cost. Sage Sage Customer Support Phone Numberand TurboTax have dedicated websites where users can search for any sort of services they need. So how this support does really works? No rocket science. The user just has to submit his/her query and wait for the responses from other users to get posted.

alice long Says:
02/06/2018 at 00:03am
QuickBooks +1 888 336 0774 community, Intuit Payroll community and Intuit QuickBooks community can be subscribed to free of cost. QuickBooks QuickBooks Customer Support Phone Numberand TurboTax have dedicated websites where users can search for any sort of services they need. So how this support does really works? No rocket science. The user just has to submit his/her query and wait for the responses from other users to get posted.

alice long Says:
02/05/2018 at 23:58pm
Quicken +1 888 336 0774 , one of many Intuit brands with a subscription base of over 1.5 million, has been commanding the accounting community's adulation and accolades for quite some time now. Quicken services like "Creating estimates", "Tracking of time and projects", "Invoice Preparation", "Online Tracking of expenses", and "getting financial reports" have turned people's choice in its favor. Further, Intuit has rolled out its new product " Quicken+1 888 336 0774 Quicken Technical Support NumberSelf-Employed" which exclusively caters to a burgeoning rise of entrepreneurs and freelancers. To connect the dots between a sprawling spectrum of brands and user base worldwide, an equally diverse support service is a key necessity that Intuit has acknowledged and entrusted itself into.

Lucy Gray Says:
02/05/2018 at 00:20am
Sage Customer Support Phone Number All the above work I think now advocated our level of aptitude in Sage, devotion, enthusiasm and client driven approach. You get similar administrations from Sage Ltd also however Sage won't have the capacity to offer Windows Support or Mac Support or OS issues causing issues in Sage. Be that as it may in the event that you pick Sage Customer Support Number and help from Sage Accounting Solution, which will promise you both Sage and Computer help with one cost.

Lucy Gray Says:
02/05/2018 at 00:14am
Day in and day out Quicken Customer Service Phone Number by affirmed professionals Our Quicken client bolster number specialists are accessible day in and day out to serve you better with your Quicken programming and administrations. You can reach us for any form of Quicken or QuickBooks on windows and Mac or cell telephone.

Lucy Gray Says:
02/05/2018 at 00:06am
Seizing join with Quickbooks Help is straightforward and brisk. In the event that you confronting some issue while utilizing QuickBooks account oversee so you concentrate on our business. Now you can call us on Quickbooks Technical Support Number bolster telephone number +1-844-454-7202.

anjilo smith Says:
02/03/2018 at 05:30am
Sage 50 Customer Service Phone Number +1-888-307-3506
You can call this Sage 50 Technical Support Phone number 24 hours per day, 7 days seven days on: 1-888-307-3506 It will get you straight through to the right group. Sage Tech Support Number
Sage Tech Support Phone Number On the off chance that for any reason you encounter any issues with this Sage 50 Support Phone Number. At that point please drop us an email. So we can investigate it, as we need to keep the Sage data on this site as up and coming as could be allowed.

anjilo smith Says:
02/03/2018 at 05:18am
Quicken Tech Support Number +1-888-307-3506
Animate Support telephone number is a 24*7 helpline. Quicken Tech Support Number
Quicken Tech Support Phone Number Clients from USA/CANADA can utilize Quicken enable telephone to number at whatever point they require. We have Lots of upbeat clients who are making the most of our Quicken help benefit. Animate help telephone number will associate you to a live individual via telephone.

anjilo smith Says:
02/03/2018 at 03:19am
QuickBooks Customer Support Phone Number +1-888-307-3506
You can get our helpdesk bolster for Backup Support Multi-client Support, Payroll Support, Quickbooks Technical Support Number
Quickbooks Technical Support Phone Number Synchronization with Devices bolster, QB Installation Support, QuickBooks Tech Support for Updating your QB, Error Support and so forth. Call us today for moment bolster.

Olivia Smith Says:
02/02/2018 at 05:37am
Antivirus Customer Service Phone Number is here to help. Call +1888-451-1608 Norton Antivirus Support Phone Number for all kind of technical and support queries. Lack of technical support. Avg Antivirus Tech Support Number The CA Antivirus website seems to lack detailed information for troubleshooting the software. Avast Antivirus Technical Support NumberSome users also experienced difficulties talking with the troubleshooting staff from CA Antivirus.

Olivia Smith Says:
02/02/2018 at 05:13am
Microsoft Outlook Customer Support is here to help. Call +1-888-451-1608 Microsoft Outlook Support Phone Number for all kind of technical and support queries. The introduction of Outlook Express has changed the internet world by offering a new platform of email services. Microsoft Outlook Support Number It is a free email client that is in direct competition with Mozilla Thunderbird and other email clients.

Olivia Smith Says:
02/02/2018 at 04:59am
Aol Customer Support Number is here to help. Call +1-888-451-1608 for Mail correction, reset, forget password, account disable and unable, send or receive mail.This inspiring story is true and underlines the fact that it is never too late if Aol Customer Support Phone Number someone has a dream that they refuse to give up, regardless of the odds against its fulfillment.

Says:
04/16/2012 at 15:02pm
Great video and interesting to see the panelists (and by extension Vendors) agree on the fundamentals limitations of wireless.

Says:
02/09/2012 at 14:10pm
Thanks Marcus, that is my consensus on Voice at 20 MHz. The key demand on AC will be video, IMHO. Thing like Skype, FaceTime are applications of the younger techies .....Once one, 802.11ac SOHO AP is released in the wild and it is proved it can handle video well with little to no drops on voice and video. Vendors like Apple and Google will swiftly launch products that the BYOD buzzword..that will creep into the enterprise- first college campuses , and boardrooms....

Says:
02/09/2012 at 13:53pm
I haven't had or heard of any conversations around those topics yet. We're still a year away from any meaningful enterprise products, so I suspect those conversations will come when the 11ac skeleton has more skin on it.
I suppose the voice conversation has a lot of overlap with the more generic discussion of mobile devices. The consensus seems to be that most voice clients and mobile devices will still want to operate in a 20 MHz channel (a given for legacy 802.11a phones, of course) for power savings, which reinforces the idea that the big gains of 80 and 160s will be not as significant in many enterprises. In that sense, most channel plans will still default back to 20 MHz or possibly 40 Mhz channels instead of 80.
When it comes to site surveying and setting channel plans, I believe many vendors will adopt some type of adaptive channel selection technology that can dynamically assess the optimal channel settings (operating channels and sizes). This will be interesting to watch when products come out.

Says:
02/09/2012 at 13:43pm
Thanks Marcus for the post and video.Has anyone addressed the issue of 802.11ac : site survey tools and using the product in an environment where 802.11a is used for voice over WiFi. If yes, what is the consensus ? Thanks in advance.

<< prev - comments page 1 of 1 - next >>

Leave a Reply

Please login or sign-up to add your comment.
Success Stories

I literally just came out of the testing centre having taken the CWDP exam. The certification process opened my mind to different techniques and solutions. This knowledge can only broaden your perspective. Great job, CWNP, you have a great thing going on here.

-Darren
Read More

Working through the CWNP coursework and certifications helped not only to deepen my technical knowledge and understanding, but also it boosted my confidence. The hard work it took to earn my CWNE has been rewarding in so many ways.

-Ben
Read More

I want to commend you and all at CWNP for having a great organization. You really 'raise the bar' on knowing Wi-Fi well. I have learned a ton of information that is helping my job experience and personal career goals, because of my CWAP/CWDP/CWSP studies. Kudos to all at CWNP.

-Glenn
Read More