Problem
Research questions and friction points this paper is trying to address.
Age of Information
Sampling and Transmission Costs
Preemption Control
Worse Routes, Fresher Information: Preemption Redefines Which Route is Best
🤖 AI Summary
本文研究了在信息新鲜度与采样传输成本综合目标下，通过预emption控制N条异构传输路径的选择问题，并使用平均成本脉冲控制模型求解。
📝 Abstract
This paper studies joint sampling, route activation, and preemption control over $N$ heterogeneous transmission routes under a long-run objective combining Age of Information (AoI) with sampling and transmission costs. We formulate the problem as an average-cost impulse-control model, derive a vector-form integral average-cost optimality equation over a hybrid state space, and establish structural reductions on the state. We consider a two-route case and compute optimized policies using discretized policy iteration. Surprisingly, the results show that preemption can reverse routing preferences: the optimized policy may exclusively use a route with both a larger mean delay and a larger delay variance while avoiding the seemingly superior route. Relative to baselines that do not allow preemption, the proposed policy reduces average AoI by up to $96\%$.
Innovation
Methods, ideas, or system contributions that make the work stand out.
preemption
Age of Information (AoI)
heterogeneous transmission routes
🔎 Similar Papers
No similar papers found.
