Continuous transmission vs. stop-and-wait
Problem P28 (Kurose) · A and B 20,000 km apart, R = 2 Mbps, 800,000-bit file
Link A → B: two ways to send the same file
ready.
a) Continuous transmission, as a single message
message bits
first bit
last bit
b) Stop-and-wait, in N packets
data packet → B
ACK ← A
–
t = 0 s
Space-time diagrams (same vertical scale)
Continuous transmission
Stop-and-wait
data
ACK (dashed)