及时更新 Ber/Geo/1/2 队列模拟状态更新系统与窃听器
Jixiang Zhang1,2,3, Han Xu3, Anqi Zheng1,2
1School of IoT Engineering, Wuxi Taihu University, Wuxi 214063, China.
Entropy (Basel, Switzerland)
|September 27, 2025
概括
本研究分析了窃听系统中的信息新鲜度和传输安全性. 一个新的删除/保留方案平衡了信息时代 (AoI) 和不安全的数据包比例,显示同时最小化通常是可能的.
科学领域:
- 信息理论 信息理论
- 通信系统工程 通信系统工程
- 网络安全 网络安全
背景情况:
- 状态更新系统容易受到窃听的影响,从而危及信息安全.
- 平衡信息新鲜性 (信息时代 - AoI) 和传输安全是一个关键的挑战.
- 现有的模型往往没有考虑到窃听和缓解策略带来的权衡.
研究的目的:
- 调查信息新鲜度 (AoI) 和窃听系统中的传输安全之间的权衡.
- 引入和分析一个概率删除/保留方案来控制不安全的数据包比例.
- 导出和分析平均d-secure AoI及其与不安全数据包比例的关系.
主要方法:
- 将系统建模为离散时间的Ber/Geo/1/2队列,窃听概率为γE.
- 定义AoI和不安全的数据包,并引入一个概率删除/保留方案,参数为 δ.
- 推导平均 δ-安全 AoI 的公式,并分析其与不安全数据包比例 η(δ) 的关系.
主要成果:
- 获得了平均d-secure AoI及其与 η(δ) 的关系的公式.
- 分析特殊情况: γE=0 (没有窃听), γE=1 (保证窃听) 和 δ=1 (最大删除).
- 数字模拟表明,平均 δ-安全的 AoI 和 η(δ) 往往可以同时最小化,趋势根据 γE 变化.
结论:
- 拟议的概率删除/保留方案有效地管理了AOI和传输安全之间的权衡.
- 在大多数场景中,可以同时最大限度地减少平均d-secure AoI和不安全的数据包比例.
- 这些发现为设计安全和及时状态更新系统提供了宝贵的见解.
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