Large propagation delay (satellite networks) a= my- 112345 Reservation<Da Reservation Interval Interval nterval Frame- Arrival Propagation Delay ransmit Data Data Data Wait for reser Wait for Assigned vation Interval Data slot Satellite reservation system Use mini-slots to make reservation for longer data slots Mini-slot access can be inefficient (Aloha, TDMA, etc.) To a crude approximation, delay is 3 2 times the propagation delay plus ideal queueing delay. Slide 15Large propagation delay (satellite networks) 1 A = mv 2 3 4 5 Reservation Data Reservation Interval Interval Interval Frame Res Data Res Data Res Data Res Arrival Propagation Delay Transmit Wait for Reser- Wait for Assigned vation Interval Data Slot • Satellite reservation system – Use mini-slots to make reservation for longer data slots – Mini-slot access can be inefficient (Aloha, TDMA, etc.) • To a crude approximation, delay is 3/2 times the propagation delay plus ideal queueing delay. Eytan Modiano Slide 15