Utilization: Examples

Satellite Link: Propagation Delay tprop = 270 msFrame Size = 4000 bits = 500 bytesData rate = 56 kbps ? tframe = 4/56 = 71 ms? = tprop/tframe = 270/71 = 3.8U = 1/(2?+1) = 0.12 (too low !!)

Short Link: 1 km = 5 ?s, Rate=10 Mbps, Frame=500 bytes ? tframe= 4k/10M= 400 ?s?=tprop/tframe=5/400=0.012 ? U=1/(2?+1)= 0.98 (great!)

Satellite Link: Propagation Delay tprop = 270 ms Frame Size = 4000 bits = 500 bytes Data rate = 56 kbps ? tframe = 4/56 = 71 ms ? = tprop/tframe = 270/71 = 3.8 U = 1/(2?+1) = 0.12 (too low !!)