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In this paper, we analyze the non-linear age of information (AoI) performancein a point-to-point short packet communication system, where a transmittergenerates packets based on status updates and transmits the packets to areceiver. Specifically, we investigate three packet management strategies,namely, the non-preemption with no buffer strategy, the non-preemption with onebuffer strategy, and the preemption strategy. To characterize the level of thereceiver's dissatisfaction on outdated data, we adopt a generalized\alpha-\beta AoI penalty function into the analysis and derive closed-formexpressions for the average AoI penalty achieved by the three packet managementstrategies. Simulation results are used to corroborate our analysis andexplicitly evaluate the impact of various system parameters, such as the codingrate and status update generation rate, on the AoI performance. Additionally,we find that the value of \alpha reflects the system transmission reliability.

Average Age of Information Penalty of Short-Packet Communications with Packet Management