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This paper proposes a data-unit-size distribution model to represent theretransmitted packet size preservation (RPSP) property in a scenario whereindependently lost packets are retransmitted by a stop-and-wait protocol. RPSPmeans that retransmitted packets with the same sequence number are equal insize to the packet of the original transmission, which is identical to thepacket generated from a message through the segmentation function, namely,generated packet. Furthermore, we derive goodput formula using an approach toderive the data-unit-size distribution. We investigate the effect of RPSP onframe size distributions and goodput in a simple case when no collision happensover the bit-error prone wireless network equipped with IEEE 802.11 DistributedCoordination Function, which is a typical example of the stop-and-waitprotocol. Numerical results show that the effect gets stronger as bit errorrate increases and the maximum size of the generated packets is larger than themean size for large enough packet retry limits because longer packets will berepeatedly corrupted and retransmitted more times as a result of RPSP.

Data-Unit-Size Distribution Model with Retransmitted Packet Size  Preservation Property and Its Application to Goodput Analysis for  Stop-and-Wait Protocol: Case of Independent Packet Losses