A geosynchronous satellite has a half-duplex channel with a transmission rate of 10 kbps and a propagation delay of 0.25 sec each way. With a data packet size of 1000 bits and a loss probability p of 0.001 ,(A) what is the expected transmission time of a packet in this system? (Assume the acknowledgement packets are very small and DTA = 0.) What is the efficiency of the system?
B) Suppose the minimum acceptable efficiency is 50%. Assuming all other parameters are the same as part (a), what is the longest channel propagation delay for which we can still use stop-and-wait?
