  In this paper, we study the interplay between delay violation probability and
average Age of Information (AoI) in a two-user wireless multiple access channel
with multipacket reception (MPR) capability. We consider a system in which
users have heterogeneous traffic characteristics: one has stringent delay
constraints, while the other measures a source and transmits status updates in
order to keep the AoI low. We show the effect of sensor sampling rate on the
delay violation probability and that of the service rate of the delay-sensitive
user on information freshness.
