Table 1 Comparison of AoI and communication delay
From: Age-of-information-aware PI controller for load frequency control
Metric | AoI | Delay |
|---|---|---|
Object | The whole information update process | Each information packet |
Definition | g k(t) = t − max{tk|\(t_{k}^{\prime }\) < t} | d k = \(t_{k}^{\prime }\) − tk |
Model | Communication queue model | Random sequence [18] |
Property | Provide the communication system observability and controllability | Cyber contingency |