USING GEOMETRIC DISTRIBUTION:Given a CSMA/CA-based MAC protocol and assuming tha

Question

USING GEOMETRIC DISTRIBUTION:Given a CSMA/CA-based MAC protocol and assuming that its average packet collision rate is p, what is the expected number of retransmissions that the protocol will suffer before it successfully transmits a packet using geometric distribution ( I do not see how the answer can be p, that does not take into account how busy the channel is ( Throughput = G*e^-G / expected # transmissions = e^G (G=frames attempted to be transmitted in each interval of time with it takes to submit a standard frame))

Explanation / Answer

Whenever a collision occurs and a packet is lost, Medium access control MAC protocol retransmits the packet it transmits oly when previous packet acknowleged without any error. So if the average packet collision rate is p, then the expected number of retransmissions can be p . for each occurrence of collision, a retransmission occurs.

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