An analytical model to evaluate the delay performance of the CSMA/CA protocol under unsaturated conditions. Our delay analysis is unique in that we consider the end-to-end packet delay, which is the duration from the epoch that a packet enters the queue at the MAC layer of the transmitter side to the epoch that the packet is successfully received at the receiver side. The analytical results give excellent agreement with the simulation results, which represents the accuracy of our analytical model. The results also provide important guideline on how to set the parameters of the burst assembly policyBased on these results, we further develop an efficient adaptive policy so as to optimize the throughput and delay performance of the CSMA/CA protocol
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