Peter,
I believe there is a misunderstanding. If you point two radio antennas at
each other or place them too close to each other on the same channel and
they are not authorized to associate to each other, they will cause problems
for each other. (I believe the exception to this is WEP keys being
different). This has to do with radio functionality. It really does not
matter if the protocol is 802.11b or TurboCell.
In one of the whitepapers, it discusses how TurboCell avoids the hidden node
problem common in 802.11b configurations. CSMA/CA is not used in KarlNet
products to the best of my knowledge.
Point to Point or TurboCell No Base Station mode is a non-polling base
station. Please contact us off-list if you have more specific questions.
KarlNet Technical Support
http://www.karlnet.com/Support/Supportmain.htm
614-822-5275 x 128
mailto://support@karlnet.com
-----Original Message-----
From: karlnet-bounces@WISPNotes.com [mailto:karlnet-bounces@WISPNotes.com]On
Behalf Of Peter Dordik
Sent: Thursday, January 22, 2004 3:16 PM
To: Karlnet Mailing List
Subject: [Karlnet] Turbocell access to media
So, after some reading of materials about CSMA/CA and Turbocell i have this
opinion:
1.) When Base station is set as non-Polling, then this Base Station and her
satellites are using CSMA/CA. With or without ACK? This mode is not
aggressive
to another 802.11b devices that are working in range of our network. In this
mode is possible to set up several base stations with sector antennas at
same
antenna mast operating at same channel.
2.) When Base station is set as Polling or ISP Base station, then CSMA/CA is
not used and Base Station and her "polled" Satellites are transmitting data
regardless if medium is free or not (no carrier sense). This mode is very
aggresive to adjacent 802.11b devices and very aggresive to another
independent
turbocell network too, because there is no cooperation.
3.) If there is point to point link with two satellites (master and slave),
what mode is used: polling or non-Polling? Are there any wait states if
medium
is not free?
Please, feel free to confirm or fix me.
Regards
Peter
_______________________________________________
Karlnet mailing list
Karlnet@WISPNotes.com
http://lists.wispnotes.com/mailman/listinfo/karlnet
---
Incoming mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.563 / Virus Database: 355 - Release Date: 1/17/2004
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.563 / Virus Database: 355 - Release Date: 1/17/2004
_______________________________________________
Karlnet mailing list
Karlnet@WISPNotes.com
http://lists.wispnotes.com/mailman/listinfo/karlnet
|