On Sat, 23 Aug 2014, Hal Murray wrote:
Yep... I remember a neat paper from colleagues at Trento University that
piggybacked TCP's ACKs on link layer ACKs, thereby avoiding the collisions
between TCP's ACKs and other data packets - really nice. Not sure if it
wasn't just simulations, though.
that's a neat hack, but I don't see it working, except when one end of the
wireless link is also the endpoint of the TCP connection (and then only for
acks from that device)
That could be generalized to piggybacking any handy small packet onto the
link layer ACK.
Of course, then you have to send back a link layer ACK for the extra info.
Does that converge?
if you aren't talking between the two endpoints of the wireless connection,
probably :-)
but fairness would be an issue for something like this. what constitues a 'small
amount of data' to try and piggyback, and what happens if you are talking
between endpoints, are the two allowed to monopolize the airtime?
but backing up a step, finding airtime for the ack is just as hard as finding
airtime for the next transmission.
David Lang
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