$T_p$

Preamble transmission time

$R_s$

Preamble transmission symbol rate

$T_{\text{PHY}}$

PHY layer header transmission time

$R_{\text{hdr}}$

Header rate of PHY layer

$R_{\text{DATA}}$

Transmission rate of data

$T_s$

Slot length

$T_{\text{pSIFS}}$

Short inter-frame spacing time

MHR

Mac header

FTR

Mac footer

$\tau$

Propagation time

$x$

Payload Size

$C{W}_{\text{min}}$

Contention Window