期刊
IEEE COMMUNICATIONS LETTERS
卷 26, 期 1, 页码 54-58出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2021.3125669
关键词
Indexes; Costs; Optimal scheduling; Scheduling; Schedules; Cost function; Markov processes; Age of information; Markov decision process problem; scheduling policy; Whittle index
资金
- Australian Research Council [DP180104062]
- National Natural Science Foundation of China [62102322]
This paper proposes a new scheduling policy to minimize the cost of the age of information in a multiuser system. By introducing service charge and deriving closed-form expression for the Whittle index, the scheduling policy is designed to improve performance compared to existing policies, as demonstrated by numerical results.
We design a new scheduling policy to minimize the general non-decreasing cost function of age of information (AoI) in a multiuser system. In this system, the base station stochastically generates time-sensitive packets and transmits them to corresponding user equipments via an unreliable channel. We first formulate the transmission scheduling problem as an average cost constrained Markov decision process problem. Through introducing the service charge, we derive the closed-form expression for the Whittle index, based on which we design the scheduling policy. Using numerical results, we demonstrate the performance gain of our designed scheduling policy compared to the existing policies.
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