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- W4297882647 abstract "We develop a simple model for the timely monitoring of correlated sources over a wireless network. Using this model, we study how to optimize weighted-sum average Age of Information (AoI) in the presence of correlation. First, we discuss how to find optimal stationary randomized policies and show that they are at-most a factor of two away from optimal policies in general. Then, we develop a Lyapunov drift-based max-weight policy that performs better than randomized policies in practice and show that it is also at-most a factor of two away from optimal. Next, we derive scaling results that show how AoI improves in large networks in the presence of correlation. We also show that for stationary randomized policies, the expression for average AoI is robust to the way in which the correlation structure is modeled. Finally, for the setting where correlation parameters are unknown and time-varying, we develop a heuristic policy that adapts its scheduling decisions by learning the correlation parameters in an online manner. We also provide numerical simulations to support our theoretical results." @default.
- W4297882647 created "2022-10-01" @default.
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- W4297882647 date "2022-10-03" @default.
- W4297882647 modified "2023-10-13" @default.
- W4297882647 title "Optimizing age of information with correlated sources" @default.
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- W4297882647 doi "https://doi.org/10.1145/3492866.3549719" @default.
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