Table 1 User priorities and their corresponding contention probability

Background (BK)

$\frac{1}{8}$

$\frac{1}{16}$

Best effort (BE)

$\frac{1}{8}$

$\frac{3}{32}$

Excellent effort (EE)

$\frac{1}{4}$

$\frac{3}{32}$

Video (VI)

$\frac{1}{4}$

$\frac{1}{8}$

Voice (VO)

$\frac{3}{8}$

$\frac{1}{8}$

Medical data or network control

$\frac{3}{8}$

$\frac{3}{16}$

High-priority medical data

$\frac{1}{2}$

$\frac{3}{16}$

Emergency

1

$\frac{1}{4}$