TCP latency modeling
Q: How long does it take to receive an object from a Web server after sending a request?
TCP connection establishment
Assume one link between client and server of rate R
Assume: fixed congestion window, W segments
no retransmissions (no loss, no corruption)
- WS/R > RTT + S/R: ACK for first segment in window returns before window’s worth of data sent
- WS/R < RTT + S/R: wait for ACK after sending window’s worth of data sent