Ubiquiti's next software release is supposed to have dynamic ratios with
sync.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
On 1/10/2011 11:25 AM, Jerry Richardson wrote:
Yes, with wifi based radio systems you can see less throughput with
sync than without.
With Canopy the DL% is fixed regardless if the AP is getting the sync
pulse from GPS or generating it itself. i.e. if you set the DL% to 75%
it's fixed regardless if the bandwidth is being used or not.
With .11 radios the DL% is dynamic and will adjust according to demand
(which is why they are NOT in sync with other .11 radios). When you
sync them, the DL is no longer dynamic. So if you had a .11-based BH
that has 90% downlink traffic and force it to sync the DL% may only be
50% which would look like half.
Does that help?
- Jerry
*From:*[email protected] [mailto:[email protected]]
*On Behalf Of *Jeromie Reeves
*Sent:* Monday, January 10, 2011 7:31 AM
*To:* [email protected]; WISPA General List
*Subject:* Re: [WISPA] GPS Sync / or Sync between devices at site
without GPS Question
I do not know how the Radwin Sync works. With Canopy, you do not lose
bandwidth unless you do not have the timing the same. You can adjust
settings in such a way as to not step on yourself and still have
different bandwidth profiles with Canopy.
I do not see why sync would lose any bandwidth, unless it is cause now
you only have X Transit tie and Y receive tie instead of X+%Y.
On Sun, Jan 9, 2011 at 2:03 PM, Scott Carullo
<[email protected] <mailto:[email protected]>> wrote:
For the first time I synchronized multiple devices (two backhauls) at
a tower site to see what it was all about. All of our gear in the
past did not have the capability to sync across devices to save
spectrum and/or reduce interference between local devices.
In this case I used two Radwin 2000C backhauls with a sync cable
between them. Setting up the sync between them was easy however the
first thing I noticed was that the available bandwidth was cut in
half. Is this typical of all synced units? I guess there would be no
more reduction in speed after the first two radios synced because if
there were more they would all fire at the same time any way. Did I
loose bandwidth because they were in MIMO mode rather than Diversity
mode or is the slowdown just a function of the timing reduction to
keep things clean?
Is the UBNT GPS sync gear going to provide less throughput than I
currently experience when their new sync capable gear comes out?
Thanks, just trying to get some feedback to learn more about how
Syncing devices affects their performance.
Scott Carullo
Technical Operations
855-FLSPEED x102
*Error! Filename not specified.*
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