Using 12db antenna's w/ the lucent cards at 3miles doesn't give you much
to play with for signal/fade margin
Dan Metcalf
Wireless Broadband Systems
http://www.wbsysnet.com/
877-685-0578
dan.metcalf@wbsysnet.com
> -----Original Message-----
> From: karlnet-admin@WISPNotes.com [mailto:karlnet-admin@WISPNotes.com]
On
> Behalf Of Demarc (tony) 908-996-7995
> Sent: Monday, December 16, 2002 12:15 AM
> To: karlnet@WISPNotes.com
> Subject: RE: [Karlnet] Strange retransmit problem
>
> Dan
>
> The S/R is from 7 to 15 dBi this is one the low side. What is the
system
> design from customer to AP? Somewhere we need to get the S/R to a
stable
> 20ish to increase performance.
>
> Sincerely
> Tony Morella
> Demarc Technology Group
> Office: 908-996-7995
> Cell: 908-246-9170
> Fax: 908-847-0202
> email: tony@demarctech.com
> http://www.demarctech.com
> Open Chat Server http://www.demarctech.com:8000
> Yahoo IM: tonymorella
> Wireless Solution Provider
>
>
> > -----Original Message-----
> > From: karlnet-admin@WISPNotes.com
> > [mailto:karlnet-admin@WISPNotes.com] On Behalf Of Dan Metcalf
> > Sent: Sunday, December 15, 2002 6:25 PM
> > To: karlnet@WISPNotes.com
> > Subject: RE: [Karlnet] Strange retransmit problem
> >
> >
> > Kevin,
> >
> > On the link we see a huge # of re-trans, the Signal is about
> > -75dBm and noise varys from -82dBm to -90dBm
> >
> > Dan Metcalf
> > Wireless Broadband Systems
> > http://www.wbsysnet.com/
> > 877-685-0578
> > dan.metcalf@wbsysnet.com
> >
> >
> > > -----Original Message-----
> > > From: karlnet-admin@WISPNotes.com
> > [mailto:karlnet-admin@WISPNotes.com]
> > On
> > > Behalf Of Kevin Knuth
> > > Sent: Sunday, December 15, 2002 4:54 PM
> > > To: karlnet@WISPNotes.com
> > > Subject: RE: [Karlnet] Strange retransmit problem
> > >
> > > Chris,
> > >
> > > I agree with your point about not needing to fix a constant
> > situation.
> > >
> > > I would be much more interested in Signal level in dBm as
> > opposed to
> > > signal to noise ratio. And since the interference seems to be
> > > intermittent I
> > am
> > > wondering why you are having problems. Have you noticed (I am too
> > lazy on
> > > a
> > > Sunday to go back and read this whole thread!) any issues on the
> > ETHERNET
> > > side of the unit? AND, this particular client, any idea
> > what kind of
> > data
> > > he is trying to move when the problems occur? And do you use
> > throttling?
> > >
> > > Just curious.....I will have to have tech support work with you to
> > really
> > > try to find a solution.
> > >
> > > Kevin
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: karlnet-admin@WISPNotes.com
> > [mailto:karlnet-admin@WISPNotes.com]On
> > > Behalf Of Chris Conn
> > > Sent: Sunday, December 15, 2002 4:12 PM
> > > To: karlnet@WISPNotes.com
> > > Subject: RE: [Karlnet] Strange retransmit problem
> > >
> > >
> > > On Sun, 15 Dec 2002, Kevin Knuth wrote:
> > >
> > > > The TurboCell algorithm is pretty complex, so I am not sure of
the
> > > "delay
> > > or
> > > > timeout" before it moves on.
> > > >
> > > > However, you must realize the forcing TurboCell to "not
> > wait" has an
> > > effect
> > > > too! I just wonder if the benefit outweighs the other possible
> > effects
> > > on
> > > > performance. A question that WISPs have to ask themselves is
how
> > many
> > > links
> > > > do they have that have less then great signal? Most
> > WISPs run with
> > very
> > > > marginal links. If we tell TurboCell to ignore those, they may
as
> > well
> > > close
> > > > up shop!
> > >
> > > Hello,
> > >
> > > As I said, this problem only occurs for a few minutes,
> > where a single
> > > satellite is hogging all resources. No other satellites get
polled.
> > I
> > > don't believe that this "fix" would necessarily have to take into
> > account
> > > a constant situation but rather a particular case where the
> > satellite
> > is
> > > obviously not sending something back to the base and it
> > gets stuck. I
> > > don't see how it can be considered normal that a satellite can
cause
> > an
> > > entire multipoint setup to become unuseable for a number of
minutes.
> > >
> > > As for marginal, during one of these "problems", I had 20db+ SNR
on
> > either
> > > the base or the satellite, therefore I doubt it is a noise
> > issue. And
> > the
> > > satellites in question have less than 2% retransmits at any
> > given time
> > > other than these particular incidents where we have several
> > thousand %
> > of
> > > retransmit.
> > >
> > > Chris
> > >
> > >
> > > _______________________________________________
> > > Karlnet mailing list
> > > Karlnet@WISPNotes.com
> > > http://lists.wispnotes.com/mailman/listinfo/karlnet
> > >
> > > _______________________________________________
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> > > Karlnet@WISPNotes.com
> > > http://lists.wispnotes.com/mailman/listinfo/karlnet
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>
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