In this section, we show how, with suitable simplifying
assumptions, it can be extended to account for frame corruption.
Let us first comment that the thorough evaluation of the error probability encountered
by a frame transmission would require a detailed investigation dealing with physical layer
transmission details, fading channel modelling, and interference/capture issues. Such an
11 This neat interpretation was suggested by A.C. Boucouvalas, P. Chatzimisios, and V. Vitsas in a private
communication to one of the authors of this chapter. The delay expression given in Eq. (48) was first derived in
their recent work with a technical approach different from that presented here [23].
Performance Study of IEEE 802.11 DCF and IEEE 802.11e EDCA 85
investigation is out of the scope of the present section. However, with the simplifying
assumption that all frames are subject to the same, known, corruption probability, the
analysis becomes straightforward.
Let ?¶ be the probability that a transmitted frame is corrupted because of noisy channel
conditions, and assume, for convenience of presentation, that errors may occur only on the
transmitted MPDU (and not on control frames such as ACK, RTS and CTS ??“ the extension
of the analysis to account for control frame errors is immediate).
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