[ipwave] Hidden terminal problem

[Charlie Perkins <[e-mail]>]

Hello Alex,

Consider the following three nodes with radio links as shown:

A----------B----------C

Suppose that A and B are at 80% of their signal range, and also that B 
and C are at 80% of their signal range.

So A and C are not in range.  So A is 'hidden' from C, and C is 'hidden' 
from A.

That's the hidden terminal problem.  It's not specific to OCB or WiFi, 
and it is not a hypothetical problem.  It's just physics. It's not at 
all difficult to understand, but it is very important to understand.

One question below...

On 4/16/2019 3:18 AM, Alexandre Petrescu wrote:
>
> ...

>
> I do not know how the hidden terminal problem works.  I feel like if I
> start looking into it I will grow additional white hairs.  I feel like I
> better avoid  it.
>
> I think other people have some experience with the hidden terminal
> problem in non-OCB WiFi and 802.15.4.  I am listening to them.
>
> I think nobody has any experience with the hidden terminal problem in
> OCB settings.  I have some doubts, but still I think it is almost nobody.
>
>
I find this very surprising!  What do others think?

Regards,
Charlie P.