I've found that in noisy environments b works better. Just did a repair at a customer's site, 400 to 700k down, 2 to 3 megs upload. Switched from b/g to b only and no he gets a steady 4 megs both ways. Go figure.
Mikrotik with xr2 card. Power set to 20dB with 13dB 120* hpol sector. About 25 subs on this one. LOTS of other 2.4 in the area. marlon ----- Original Message ----- From: "Jason Hensley" <[email protected]> To: "'WISPA General List'" <[email protected]> Sent: Thursday, October 01, 2009 7:58 AM Subject: [WISPA] To G or not to G :-) > In 2.4 land, if you have a lot of noise, which protocol is better - B or > G? > Is it better to run an AP as locked into one mode or is it OK to do a mix? > > Max I want off of 2.4 customers is 3meg so not that worried about the > extra > speed that G will provide, but, I would like to know which is more stable? > I've always thought that B was more stable overall but just provided less > bandwidth. I've gotten some info that may counter that. What's the > real-world experience with folks in a high-noise environment, combined > with > a higher useage AP? > > I've got an AP that we've run in B mode only for a while. We've started > having problems with it - speeds go from 3meg at the customer to 200k and > fluctuate constantly. We've worked with RTS, ACK timeouts, etc etc and > nothing seems to have improved the stability. For testing purposes we put > up another AP right next to the one we're having trouble with. Switched > two > of our gaming clients to that one (setup as G mode only) and they seem to > be > doing better, but not quite as good as we feel they could be. This is on > Deliberant AP's (Duos). The backhaul part of it is not the issue - we can > pull close to 15meg back to our office when cabled into the AP. We have > other Deliberant APs that are running MANY more clients than this one so > we > know it's not limitations of the equipment. AP is on top of a water > tower. > Have taken all clients off and brought them back on one by one and it did > not reveal anything significant. With just one customer on the AP started > acting up again. Swapped radios in the AP thinking we could have one > going > bad and still no luck. > > 2.4 antennas are H-pol. We have a ton of noise in the area, but we've > been > through basically every channel and it did not help either. Other AP's in > the vicinity are performing fine. Thought of the multipath issue so we > raised our test AP up a little higher than the other one. As I said, the > test AP seems to be better, but next to it on top of the tower we can get > around 8 or 9 meg down (locked into G mode), but at the CPE's we're still > barely getting 2.5-2.8meg. > > Any thoughts? We changed everything we can. The new "test" AP has a 9db > antenna compared to the 13db on the "production" AP. Other than that, > they > are identical as far as equipment goes. > > So, back to the subject question though, what's real-world experience with > G-only mode in the field? > > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
