A fast PRMA protocol is proposed, and its peformance evaluation carrie
d out. The protocol gives better performance in the number of active u
sers than that of the original PRMA, and a better performance in mean
delay than that of another PRMA proposed by Mitrou. Futhermore, in thi
s protocol, the base station is much simpler than that of the PRIMA of
Mitrou because the work of channel assignment for uplink need not be
done by the base station.