This is just going to get worse: This year I will begin giving presentations with concurrent XMPP, Audio and Java sessions via an AP as integral parts of the presentation.
great topic On Tue, Jan 12, 2010 at 12:19 PM, Richard Chycoski <rskiad...@chycoski.com> wrote: > da...@lang.hm wrote: >> On Tue, 12 Jan 2010, Richard Chycoski wrote: >> >>> da...@lang.hm wrote: >>>> On Tue, 12 Jan 2010, Richard Chycoski wrote: >>>> >>>>> I would also configure all of the APs for 'b' only (no 'g') to get >>>>> the maximum use of your channel space. Mixing AP types as you have >>>>> suggested may cause you more headaches, but then since $WORK builds >>>>> our own, it's easy for us to use all the same AP everywhere - but >>>>> it sure does make WiFi roaming between the floors (and buildings) >>>>> less troublesome. >>>> >>>> b and g use the same channels, just at different speeds. I would >>>> expect that everyone would be using g nowdays, and the more people >>>> who use g the shorter the transmissions, and the less cluttered the >>>> airwaves >>> g uses groups of b channels. If you restrict the network to b, you >>> get more channels to work with, and providing a cell structure is >>> more practical. Besides, if any b devices come onto the net, it >>> becomes b anyway. Any g device can operate as b, and I think that >>> throughput is going to be the least of your worries - channel overlap >>> and contention are likely to render g pretty well useless. >> >> no, g and b have the same RF footprint, in both cases each channel is >> wide enought that it overlaps several adjacent channels. To avoid this >> interferance the only channels that you can use are 1, 6, 11. It >> doesn't matter if you are using b or g. > My bad - somehow I had developed an incorrect understanding of the b/g > channel arrangements. I sit corrected! > > You *can* use overlapping channels if they are far enough apart, it's > still better than using the same channels too close together. I'll see > if I can get the bandplan that we use at work, because there are far too > many APs on the floor for them to have been restricted to three channels. > > This paper > <https://upcommons.upc.edu/e-prints/bitstream/2117/1234/1/CrownCom07_CReady.pdf> > has a discussion on the use of overlapping channels that you might find > useful. Spread-spectrum does help. Using overlapping channels will > reduce throughput, but same-channel interference is much worse > (throughput is very poor). > > - Richard > _______________________________________________ > Discuss mailing list > Discuss@lopsa.org > http://lopsa.org/cgi-bin/mailman/listinfo/discuss > This list provided by the League of Professional System Administrators > http://lopsa.org/ > _______________________________________________ Discuss mailing list Discuss@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
