>From http://www.ubnt.com/forum/showthread.php?p=53556: Client Connection >Quality
On Nov 22, 2009, at 9:38 PM, Israel Lopez-LISTS wrote: > I'm gonna have to set up the environment again. Only thing I cant > simulate right now is distance. > > As long as it wasnt some voodoo config setting that made it work better, > I might have to play with the Mobile NS2's settings for it to play nicely. > > OT: What is CCQ? > > -Israel > > Josh Luthman wrote: >> It is very weird isn't it? >> >> Vi is better the Emacs. >> >> On 11/22/09, Mike <[email protected]> wrote: >> >>> Josh: >>> >>> I thought that too. I have a handful of customers on a 5 MHz >>> sector. Winbox shows this: >>> >>> Emacs! >>> >>> >>> Mike >>> >>> At 07:32 PM 11/22/2009, you wrote: >>> >>>> I believe when you half the channels the rates also get halved - from >>>> 54mbit >>>> to 27mbit max (that is from 20mhz to 10mhz channels). >>>> >>>> I also can't see why you're voice would be having problems in half or >>>> quarter channels unless there is a software bug. It should only improve >>>> unless you're using all available bandwidth. >>>> >>>> Josh Luthman >>>> Office: 937-552-2340 >>>> Direct: 937-552-2343 >>>> 1100 Wayne St >>>> Suite 1337 >>>> Troy, OH 45373 >>>> >>>> "The secret to creativity is knowing how to hide your sources." >>>> --- Albert Einstein >>>> >>>> >>>> On Sun, Nov 22, 2009 at 8:08 PM, Chuck Hogg <[email protected]> wrote: >>>> >>>> >>>>> First, you should have a better signal than -70 at <5Miles away with a >>>>> 24dB/NS2 antenna and a B2HP/9dB omni. I get 65 or better with a 19dB >>>>> panel. >>>>> >>>>> Don't forget, 10MHz channel is 1/2 available bandwidth and 5MHz is 1/4 >>>>> available bandwidth. Really, you will get about 7-10MBit aggregate >>>>> (depending on how many customers) on a 5MHz channel connected at 54MBit, >>>>> which requires signals at -74dBm with a good fade margin (10dB). Also, >>>>> the TX power is significantly less for 54MBps (23dBm) vs 24MBps(28dBm), >>>>> less than half. Likely, you are connecting at 48MBps or 36Mbps, which >>>>> at that rate your total available "real case" bandwidth is as little as >>>>> 4MBps, while at 20MHz you are at 15+. >>>>> >>>>> A narrower channel should not affect your transmission, likely will make >>>>> signals better, roughly double (+3dBm) from 20-10, and double from >>>>> 10-5(total +6dBm). >>>>> >>>>> Regards, >>>>> Chuck Hogg >>>>> Shelby Broadband >>>>> 502-722-9292 >>>>> [email protected] >>>>> http://www.shelbybb.com >>>>> >>>>> >>>>> -----Original Message----- >>>>> From: [email protected] [mailto:[email protected]] On >>>>> Behalf Of [email protected] >>>>> Sent: Sunday, November 22, 2009 6:20 PM >>>>> To: WISPA General List >>>>> Subject: Re: [WISPA] 10MHz, 5MHz - unstable for voice? >>>>> >>>>> Well next time definitely bring more food! Beef jerky and granola bars. >>>>> >>>>> In my testing the narrower channels just made things slower. I was >>>>> testing in a pristine area where there was no other 5.8GHz going on. >>>>>> From what I hear if the environment had been polluted performance might >>>>> have actually gone up with the narrower channels. >>>>> >>>>>> From what I've read narrower channels doesn't effect packet size or >>>>> transport. But switching to WDS bridged does. >>>>> >>>>> Greg >>>>> On Nov 22, 2009, at 6:15 PM, Israel Lopez-LISTS wrote: >>>>> >>>>> >>>>>> Its not in the field, but it is sitting here in my bedroom looking >>>>>> >>>>> cool :). >>>>> >>>>>> I was thinking that using the 10/5MHz bandwidth required one to setup >>>>>> something else. I'm not that familiar with the use of half/quarter >>>>>> >>>>> rate >>>>> >>>>>> channels and how that affects the frame transport/packet size etc,. >>>>>> >>>>>> I wonder if it was environment based rather than >>>>>> 'software/configuration' based. If I get some time this evening I >>>>>> >>>>> might >>>>> >>>>>> setup the gear again for more focused testing (Testing in the field >>>>>> >>>>> with >>>>> >>>>>> volunteers who are cold and hungry dont usually respond well to >>>>>> >>>>> testing >>>>> >>>>>> plans). >>>>>> >>>>>> -Israel >>>>>> >>>>>> [email protected] wrote: >>>>>> >>>>>>> Just for kicks I'd try WDS bridged. Do you have control from where >>>>>>> >>>>> you're at now? Is the equipment still set up? >>>>> >>>>>>> Greg >>>>>>> >>>>>>> On Nov 22, 2009, at 6:02 PM, Israel Lopez-LISTS wrote: >>>>>>> >>>>>>> >>>>>>> >>>>>>>> @Travis Johnson - Yes Upgraded to newest firmware for the two units >>>>>>>> >>>>>>>> @os10rules - Nope, Fixed was simple AP and Mobile was Station modes >>>>>>>> >>>>>>>> [email protected] wrote: >>>>>>>> >>>>>>>> >>>>>>>>> Running WDS bridged? >>>>>>>>> >>>>>>>>> Greg >>>>>>>>> On Nov 22, 2009, at 5:37 PM, Israel Lopez-LISTS wrote: >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>>> Hey All, >>>>>>>>>> >>>>>>>>>> I did some field tests (for overseas volunteer project) with some >>>>>>>>>> Ubituiti gear; Nanostation2 & Bullet2HP. >>>>>>>>>> >>>>>>>>>> One thing that was surprising was the performance degradation when >>>>>>>>>> >>>>>>>>>> switching from 20MHz to 10MHz/5MHz. Our tests were Raw Bandwidth >>>>>>>>>> Tests(AirOS), Video (VLC UDP Stream), Voice (Trixbox G711 Voice >>>>>>>>>> >>>>> Call), >>>>> >>>>>>>>>> and MTR (Latency, Jitter) >>>>>>>>>> >>>>>>>>>> I still have data to collect and prepare a report for the tech >>>>>>>>>> >>>>> team, but >>>>> >>>>>>>>>> we did notice that when we switched to 10 or 5MHz bandwidth our >>>>>>>>>> >>>>> voice >>>>> >>>>>>>>>> calls was greatly degraded. Only one way; from Fixed to Mobile I >>>>>>>>>> >>>>> could >>>>> >>>>>>>>>> hear the Fixed station easily. Mobile to Fixed the voice was >>>>>>>>>> >>>>> choppy. >>>>> >>>>>>>>>> We started to get packet loss & massive jitter on 10MHz, just >>>>>>>>>> >>>>> going back >>>>> >>>>>>>>>> to 20MHz made the links stable. >>>>>>>>>> >>>>>>>>>> Fixed Station: On a mountain side - HPOL 9dBI Omni Directional >>>>>>>>>> >>>>> with a >>>>> >>>>>>>>>> Bullet2HP @400mW >>>>>>>>>> Mobile Station: 8km away near large body of water - Bullet2HP >>>>>>>>>> >>>>> @400mW w/ >>>>> >>>>>>>>>> 24dBi Directional (HPOL Alignment) -70dbm RSSI >>>>>>>>>> >>>>>>>>>> Any ideas? We are planning on using 10MHz channels & H-Pol to >>>>>>>>>> >>>>> combat >>>>> >>>>>>>>>> any future spectrum pollution and voice calls over this network is >>>>>>>>>> >>>>> expected. >>>>> >>>>>>>>>> -Israel >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>> ------------------------------------------------------------------------ >>>>> -------- >>>>> >>>>>>>>>> WISPA Wants You! 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