Re: [smartBridges] Which signal to read?

Gary Garrett Tue, 15 Jul 2003 20:35:27 -0700

Correct.

Ray wrote:

Now I'm confused...

My understanding (please correct me if I'm wrong) is that I look at the CPE
(ABO) simple monitor to tell me how well it "hears" the Access Point (APPO).
Right?

I look at the Access Point (APPO) simple monitor to tell me how well it
"hears" the CPE (ABO). Right?

----- Original Message ----- From: "sB Tech Support" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, July 15, 2003 7:30 PM Subject: RE: [smartBridges] Which signal to read?

That is correct. The AP shows the Received Signal Strength for a client
in the client table based on traffic traverse. It doesn't poll the
client to get it from client. It is the local value, though they
represent airBridge values. The RSSI shown at the AP or Client CPE will
never be the same due to wireless medium behavior. Also at different
time, you will see different value because the packet can travel at
different way than before, so the RSSI value is just an indication only.


Alex
sB Tech Support


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gary Garrett
Sent: Wednesday, July 16, 2003 8:54 AM
To: '[EMAIL PROTECTED]'
Subject: Re: [smartBridges] Which signal to read?

The readings are totally separate. The AP is generally not able to hear

the client as well because the client end is lower powered , lower
elevation and  the AP sees many radios out there so the noise level is
higher. RSSI is a crunched number including noise, interference, and
atmospherics. This is half duplex, and each way is a different
transmitter talking to a different receiver, but not at the same time.
Don't forget there may be multipath cancellation one direction and not
the other.
In short, the client hears the tower well but the tower can not hear the

client so well. Do the path calculation for fade margin both directions.

If either one comes out poor the link will be marginal.

Jerry Carter wrote:

But the airbridge has the higher reading.(better than the ap shows). I

dont get it. So you do not really go by one or the other?

   ----- Original Message -----
   From: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
   To: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
   Sent: Tuesday, July 15, 2003 1:40 PM
   Subject: RE: [smartBridges] Which signal to read?

   That's exactly spot on! :) looks like the access point doesn't
   hear the airbridge very well. This may result in a slower  than
   desirable upload speed.

   What you want to do is get the access point to hear all your
   clients at about the same RSSI.. it's not so critical if the
   airbridge sees the ap at a lower RSSI.

   cheers,
   Paul

   -----
   Paul C. Murdock [EMAIL PROTECTED]
   mobile/801.864.1024 - fax/801.446.0130
   www.paulmurdock.com - for more info

       -----Original Message-----
       From: [EMAIL PROTECTED]
       [mailto:[EMAIL PROTECTED] On Behalf Of
       [EMAIL PROTECTED]
       Sent: Tuesday, July 15, 2003 12:30 PM
       To: [EMAIL PROTECTED]
       Subject: Re: [smartBridges] Which signal to read?

       My guess is that both are correct, keeping in mind how RF
       really works.

       One radio is reporting what it sees and hears while the other
       radio is reporting what it sees and hears. Only in ideal
       situations would you see the same exact numbers on both ends.

Just my humble opinion, but I could be wrong...

Michael

           ----- Original Message -----
           From: Jerry Carter <mailto:[EMAIL PROTECTED]>
           To: [EMAIL PROTECTED]
           <mailto:[EMAIL PROTECTED]>
           Sent: Tuesday, July 15, 2003 1:15 PM
           Subject: [smartBridges] Which signal to read?

I have all smartbridge network. I check the signal at the appo and it says 52% rssi and 85 Quality. I log into the airbridge and it tells me it has a 82% RSSI and a 92% Quality. Now I would rather believe the airbridge. But I need to know for sure which one to look at when

installing.

Jerry

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Re: [smartBridges] Which signal to read?

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