6) Consider a reservation system with N stations. The length of each minislot is m bits and the information in minislots is always received error free. Each station has a message to transmit during a cycle with probability q and no message with probability 1-q. Message lengths are n bits and messages may be received in error by destinations. Assume that each bit of a message may be received in error with probability p by a destination. A frame is discarded if received with one or more bit errors. The transmission rate on the channel is R bps and the propagation delays are negligible a) Determine the average duration of a cycle. (10 Marks) b) Determine the throughput of this system. (10 Marks)