Thanks Nick and Joseph. The UCLA paper and the graphic helped a lot too. Branden
On Mon, Mar 14, 2011 at 7:26 AM, Clark, Joseph K <[email protected]> wrote: > Attached is a diagram I found in the past that helped me visualize > 802.15.4's non overlapping with 1,6 or 11. > > Thanks, > Joseph Clark > Senior Network Engineer > Department of IT > College of Charleston > Charleston, SC 29424-0001 > o:843.953.3846 > c:843.425.4291 > e:[email protected] > > Street Address > 81 Saint Philip Street, Room 311G > Charleston, SC 29403 > > > > > -----Original Message----- > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[email protected]] On Behalf Of Nick > Kartsioukas > Sent: Friday, March 11, 2011 8:14 PM > To: [email protected] > Subject: Re: [WIRELESS-LAN] Wireless thermostats and Wifi coexistance > > On Fri, 11 Mar 2011 15:28 -0800, "Branden Kirk" <[email protected]> > wrote: > > I'm unfamiliar with the technology, but from what I've read ZigBee > > uses channels separate from the non-overlapping 1,6,and 11, but if you > > > are using channels between 1,6,11 aren't you then overlapping with > > them? I've also read something about using channel 15 and 20 which I > didn't know existed. > > Is anyone familiar with these products and can confirm for me if > > there is reason for concern or not? > > I just skimmed through a Zigbee whitepaper on co-existence with 802.11 > networks: http://www.zigbee.org/imwp/download.asp?ContentID=11745 > It sounds like they're claiming Zigbee uses relatively narrow chunks of > spectrum, and can fit between 1, 6, and 11. Whether or not that's true > in practice, I don't know, but the carrier-sense feature of Zigbee > radios should keep them from stepping on 802.11 traffic. If you have > access to a spectrum analyzer (even something relatively cheap like a > WiSpy or Ubiquiti AirView) and a demo Zigbee thermostat, it should be > easy to check quickly. There are also Zigbee radios that operate in the > 900MHz band. > Here's another paper on Zigbee and 802.11 networks (focusing on a > hospital environment): > http://nrlweb.cs.ucla.edu/publication/download/538/a5-hou.pdf > -- > Nick Kartsioukas > Cuesta College Computer Services > 805-546-3248 > > ********** > 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/. > > -- Branden Kirk Network Administrator, IT Operations Biola University (562)944-0351 x5032 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
