{
  "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 $96\\%$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.13622",
  "author_total": 3,
  "authors": [
    {
      "name": "Adem Utku Atasayar"
    },
    {
      "name": "Aimin Li"
    },
    {
      "name": "Elif Uysal"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/djcf8eqedw3b1.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.13622",
  "fulltext_url": null,
  "id": "djcf8eqedw3b1",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.13622",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cs.IT"
    ],
    [
      "arxiv",
      "math.IT"
    ],
    [
      "openalex",
      "1705|Age of Information Optimization"
    ]
  ],
  "openalex": "W7213264808",
  "pdf_url": "https://arxiv.org/pdf/2609.13622",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/djcf8eqedw3b1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:38Z",
      "native_id": "2609.13622",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.13622"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.IT",
      "subfield": "general"
    }
  ],
  "title": "Worse Routes, Fresher Information: Preemption Redefines Which Route is Best",
  "title_text": "Worse Routes, Fresher Information: Preemption Redefines Which Route is Best",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:38Z",
  "url": "https://research.draconitic.com/paper/djcf8eqedw3b1",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1145/3842721.3850127",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}