We need to able to reuse the same channel on a single site to support much more subscribers thus improving economics.
I see in this forum many users need this feature but are proposing a solution to channel reuse that many other vendors in the industry (ex Motorola canopy or skypilot) have taken: synchronize the radios with GPS so that they do not interfere with each other.
Transmit GPS synchronization is difficult on a polled protocol like Nstreme while it is trivial on time slotted protocols like canopy use.
However, we have a very simple solution to channel reuse that should be very easy and fast to implement on Nstreme if the atheros driver allows it:
–being able to choose 2 different channels for transmitting and receiving on the same single radio card
for example, on the AP
tx on channel 1 while rx on channel 2
on the subcribers CPEs
tx on channel 2 while rx on channel 1
Using sectorial antennas with good F/B ratio would allow to reuse the same channel many times over the same site, (depending on antennas radio pattern even 3-4 times) since transmitting APs will not interfere with receiving APs on the same site.
Of course I’m talking about PmP Nstreme with a single radio card, since Nstreme2 PtP already has this feature even though using 2 different radio cards.
Furthermore, using different channels for transmitting and receiving is also handy to get around interference on crowded rf environments.
I really doubt this would work.
As a standard wireless interface only has ONE RF unit in it, it can only on one frequency at the same time.
So while it should be possible to switch frequencies and do what you propose: While the wireless interface is in “TX mode” on frequency A, it won’t receive any data that might come in on frequency B from a CPE.
This could probably be fought by doing some form of time synchronisation, but then you’re effectively back to the first solution you quoted.
So in short: I don’t think this is technically sensible.
Have you guys considered that synchronizing channel usage would also reduce throughput. But using different polarity would definitely open a window opportunity.
Have you guys considered that synchronizing channel usage would also reduce throughput. But using different polarity would definitely open a window opportunity.
Have you guys considered that synchronizing channel usage would also reduce throughput. But using different polarity would definitely open a window opportunity.
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