Age of Information for Frame Asynchronous Coded Slotted ALOHA

Abstract

The rapid growth of IoT applications in which a large number of devices need to deliver information to a central monitor in a timely fashion has focused attention on the age of information performance of random access protocols. This paper provides the first study of one such strategy, Frame Asynchronous Coded Slotted ALOHA (FA-CSA) Through detailed network simulations, we compare its performance to a benchmark in the field, namely Irregular Repetition Slotted ALOHA (IRSA). The results show that FA-CSA achieves fresher information on average compared to IRSA, especially at low to moderate channel loads. Additionally, the study sheds light on the implications of asynchrony in access protocols, particularly in the context of IoT applications with strict information freshness requirements