Summary
Reverse channel has a significant impact on TCP performance
- Bandwidth asymmetry (diverse technologies)
- Latency asymmetry (media-access)
Good solution has several components
- Decreasing the frequency of acks over constrained reverse channel (ACC and AF)
- Handling infrequent acks (sender adaptation and ack reconstruction)
- Non-FIFO scheduling of data and acks (acks-first)