Consider a satellite link that has a 2Mbps bandwidth and 500

Consider a satellite link that has a 2Mbps bandwidth and 500ms roundtrip delay. Not considering the protocol overhead:

       a) What is the minimum sliding window size (in bytes) that allows full use of the link bandwidth?

       b) What would be the effective bandwidth if we select the window size to be 64KB?

Solution

a)

A bandwidth And delay product=2Mbps*500ms=2*10^6*500*10^-6=2*10^3=2Kbits

so the minimum sliding window size 2KB

b)

effective Bandwidth=64Kb/500ms=128Kbps