  We consider a random access network consisting of source-destination pairs.
Each source node generates status updates and transmits this information to its
intended destination over a shared spectrum. The goal is to minimize the
network-wide Age of Information (AoI). We develop a frame slotted ALOHA
(FSA)-based policy for generating and transmitting status updates, where the
frame size of each source node is adjusted according to its local environment.
The proposed policy is of low complexity and can be implemented in a
distributed manner. Additionally, it significantly improves the network AoI
performance by (a) equalizing the update generation intervals at each source
and (b) reducing interference across the network. Furthermore, we derive an
analytical expression for the average network AoI attained for that policy. We
evaluate the performance of the proposed scheme through simulations, which
demonstrate that the locally adaptive FSA policy achieves a remarkable gain in
terms of AoI compared to the slotted ALOHA counterpart, confirming the
effectiveness of the proposed method.
