5 ms·
Which is exactly what Wi-Fi does, adjusting the amount of parity data depending on link loss, to keep retransmissions to a minimal.
by MayeulC 4y ago
Which is exactly what Wi-Fi does, adjusting the amount of parity data depending on link loss, to keep retransmissions to a minimal.
- sgtnoodle 4y agoIndeed. It's fun to look at the MCS table for something like 802.11ac. a lot of different rates are actually the same underlying modulation, but with varying amounts of overhead from forward error correction. 802.11 data frames also have an acknowledgement at the MAC layer. The radios dynamically ramp up the MCS rate until packets start dropping, then ramp the rate back down.
- wongarsu 4y agoAnd still, wifi links are among the top sources of packet loss. Without sophisticated forward error correction it would probably be much worse, but it shows that this is not an either-or question. The correct answer is: do both.