Re: [Discuss-gnuradio] m-block timeouts, time passed, or pause?

[George Nychis]

Eric Blossom wrote:
 > What your asking for would be hard to do using the existing framework.
> I still don't understand where you want to do this from.  That is,
> which code would be making the determination that it was time to pause
> or unpause the timer.

For instance, a new node enters a backoff state and decides that it 
needs to wait for the channel to be idle for 10ms before it can transmit 
(802.11 like).  It starts a one shot timer for 10ms, and with each new 
RSSI reading from the PHY, which comes at variable times due to 
processing and queues, the protocol checks if the new RSSI reading is 
greater than some CCA threshold.  If it's greater, it needs to pause the 
timer because the timer represents the time at which the node must wait 
when the channel is idle, not busy.  Once the RSSI drops below the CCA 
threshold, it can then resume the timer.  Once the timer fires, the node 
attempts to transmit.

- George