The consumer market loves new technology, and since this standardizes on the 5GHz band only, it is my best friend. Most of the RF problems we have is because too many computers are perfectly happy working on N on the 2.4 GHz range, yet there are too many legacy devices and mobile devices to cut off that band. The freedom of having so many NON-OVERLAPPING channels to play with is GREAT! Having the high bandwidth overhead is wonderful, especially since wireless technology has a high loss overhead. Remember how many packets get transmitted that aren't actually payload.
However they are increasing the amount of bandwidth by reducing the number of channels. This really screws enterprises, apartment complexes, and, well, anywhere with a high concentration of access points. Again, this is not the technology of the future. This will take us one step closer, but ultimately the channels and airwaves will saturate again before the next decade and we will be back to the drawing board again. We need more channels AND more bandwidth, not one or the other for it to be truly future-ready. -- Andy Voelker Manager of Student Computing in the Technology Commons Western Carolina University Be sure to check out the WCU TechTips Podcast at http://www.youtube.com/WesternCarolinaU!! Check the status of your IT requests at any time at http://help.wcu.edu/ ! From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jeffrey Sessler Sent: Wednesday, January 11, 2012 3:04 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Betr.: [WIRELESS-LAN] Gigabit Wi-Fi An auditorium with an 8-antenna 802.11ac AP running a 160Mhz channel, with nearly 7Gbps aggregate bandwidth, sounds pretty interesting to me. We have faculty that have students downloading a lot of information during class, so even in smaller 12-25 person classrooms, the added bandwidth means less time it getting the information, and more time spent teaching. I also suspect that Apple will adopt the new standard in their laptops and desktops, so there is the chance you'll see 802.11ac capable devices within the next 12 months, and given that Apple's student share here at my campus is now ~75%, that translates into a lot of 802.11ac capable devices. Jeff >>> On Tuesday, January 10, 2012 at 12:35 PM, in message >>> <943da0e70434ca499ad0088fb90eaade0e5...@suex10-mbx-05.ad.syr.edu<mailto:943da0e70434ca499ad0088fb90eaade0e5...@suex10-mbx-05.ad.syr.edu>>, >>> Lee H Badman <lhbad...@syr.edu<mailto:lhbad...@syr.edu>> wrote: Just as important as the high throughput is the better quality cells, the ability of MIMO to handle multipath, band steering and other features that make for a better radio cell with 11n. Wide channels in 5 GHz for 11n are a safe bet- there is usually enough channels to burn 40 MHz without penalty. But 80 MHz and 160 MHz for 11ac 500 Mbps and Gig speeds? Sounds more consumer-oriented than enterprisey right now to me. Lee H. Badman Wireless/Network Engineer Information Technology and Services Adjunct Instructor, iSchool Syracuse University 315 443-3003 From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU]<mailto:[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU]> On Behalf Of Rick Brown Sent: Tuesday, January 10, 2012 3:01 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: Re: [WIRELESS-LAN] Betr.: [WIRELESS-LAN] Gigabit Wi-Fi While the high speeds may not be necessary, "perception is reality." They will be demanded because the capability is there! IMHO in the 5GHz world there are enough channels to handle bonding them! And...if you make the bandwidth available somebody will use it! Sent from my iPhone On Jan 10, 2012, at 2:42 PM, "Eric W. LaCroix" <elacr...@newhampton.org<mailto:elacr...@newhampton.org>> wrote: I am not a wireless network engineer by any stretch of the imagination. However, I do love analogies... and to me, taking up two lanes on an existing highway to let one lane of traffic drive faster does seem somewhat shortsighted. My second point is related to Heath's excellent question: "are these high speeds really necessary?" At least on my campus, the drive for wireless is to give users reliable access to the Internet. Since we will not have enough bandwidth in the foreseeable future to have 802.11n WiFi be the bottleneck, I am quietly wondering how necessary this kind of upgrade would be for us. Eric __________________________________________________________ Eric LaCroix, Director of Technology, New Hampton School 70 Main Street * New Hampton, NH 03256 603-677-3450 phone & fax The EDUCAUSE Wireless Issues Constituent Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> writes: This is a multi-part message in MIME format. --Boundary_(ID_dKTAId9Hqbr2otAyVMLbKw) Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7BIT I think the usage of wide channels requires a thoughtful look at the needs of the users in the environment. If the users need the higher bandwidth and/or you can space the channel coverage out so as to not cause co-channel interference then their shouldn't be an issue. If bandwidth isn't a concern and/or the environment has a lot of overlap then wider channels may not be needed. I can't really comment on the DFS as I'm not sure how 802.11n handles it. My question is, are these high speeds really necessary? I don't watch very closely, but I've never seen a wired user consume a high percentage bandwidth. I'm looking at pushing for some wireless upgrades in the coming years, but I myself can't really see a good reason to wait for the new HT technologies. -- *Heath Barnhart, CCNA* Network Administrator Information Systems Services Washburn University Topeka, KS On 1/10/2012 9:53 AM, Kees Pronk wrote: > Anyone would like to comment on the use of wide channels in 5Ghz, especially > with this (old but imho still useful info) in mind? See: > http://www.ti.com/lit/wp/sply003/sply003.pdf > > Also for environments having to deal with DFS i foresee challenges......any > comments? > > Thanks and have a great new wifi year! > > Kees Pronk > > > > >>>> Hector J Rios<hr...@lsu.edu<mailto:hr...@lsu.edu>> 1/10/2012 3:36>>> > For those of you following the development of gigabit Wi-Fi: > > http://www.networkworld.com/news/2012/010912-ces-gigabit-wifi-254659.html?hpg1=bn > > Thanks, > > Hector Rios > Louisiana State University > > ********** > Participation and subscription information for this EDUCAUSE Constituent > Group discussion list can be found at http://www.educause.edu/groups/. > > > --------------------------------------------------------------------------- > Op deze e-mail zijn de volgende voorwaarden van toepassing: > The following conditions apply to this e-mail: > http://emaildisclaimer.avans.nl > --------------------------------------------------------------------------- > > ********** > Participation and subscription information for this EDUCAUSE Constituent > Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. --Boundary_(ID_dKTAId9Hqbr2otAyVMLbKw) Content-type: text/html; charset=ISO-8859-1 Content-transfer-encoding: 7BIT <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> I think the usage of wide channels requires a thoughtful look at the needs of the users in the environment. If the users need the higher bandwidth and/or you can space the channel coverage out so as to not cause co-channel interference then their shouldn't be an issue. If bandwidth isn't a concern and/or the environment has a lot of overlap then wider channels may not be needed. I can't really comment on the DFS as I'm not sure how 802.11n handles it.<br> <br> My question is, are these high speeds really necessary? I don't watch very closely, but I've never seen a wired user consume a high percentage bandwidth. I'm looking at pushing for some wireless upgrades in the coming years, but I myself can't really see a good reason to wait for the new HT technologies.<br> <br> -- <br> <b>Heath Barnhart, CCNA</b><br> Network Administrator<br> Information Systems Services<br> Washburn University<br> Topeka, KS<br> <br> On 1/10/2012 9:53 AM, Kees Pronk wrote: <blockquote cite="mid:4f0c6d16020000840001b...@gwiahsl1.avans.nl<mailto:4f0c6d16020000840001b...@gwiahsl1.avans.nl>" type="cite"> <pre wrap="">Anyone would like to comment on the use of wide channels in 5Ghz, especially with this (old but imho still useful info) in mind? See: <a class="moz-txt-link-freetext" href="http://www.ti.com/lit/wp/sply003/sply003.pdf";>http://www.ti.com/lit/wp/sply003/sply003.pdf</a> Also for environments having to deal with DFS i foresee challenges......any comments? Thanks and have a great new wifi year! Kees Pronk </pre> <blockquote type="cite"> <blockquote type="cite"> <blockquote type="cite"> <pre wrap="">Hector J Rios <a class="moz-txt-link-rfc2396E" href="mailto:hr...@lsu.edu";><hr...@lsu.edu<mailto:hr...@lsu.edu>></a> 1/10/2012 3:36 >>> </pre> </blockquote> </blockquote> </blockquote> <pre wrap="">For those of you following the development of gigabit Wi-Fi: <a class="moz-txt-link-freetext" href="http://www.networkworld.com/news/2012/010912-ces-gigabit-wifi-254659.html?hpg1=bn";>http://www.networkworld.com/news/2012/010912-ces-gigabit-wifi-254659.html?hpg1=bn</a> Thanks, Hector Rios Louisiana State University ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at <a class="moz-txt-link-freetext" href="http://www.educause.edu/groups/";>http://www.educause.edu/groups/</a>. --------------------------------------------------------------------------- Op deze e-mail zijn de volgende voorwaarden van toepassing: The following conditions apply to this e-mail: <a class="moz-txt-link-freetext" href="http://emaildisclaimer.avans.nl";>http://emaildisclaimer.avans.nl</a> --------------------------------------------------------------------------- ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at <a class="moz-txt-link-freetext" href="http://www.educause.edu/groups/";>http://www.educause.edu/groups/</a>. </pre> </blockquote> <br> <br> <div class="moz-signature"><br> </div> </body> </html> ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. <p> --Boundary_(ID_dKTAId9Hqbr2otAyVMLbKw)-- ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. -- ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
