Minimizing Age of Information for an Energy Harvesting Cognitive Radio
Minimizing Age of Information for an Energy Harvesting Cognitive Radio
复制标题
最大限度地减少能量收集认知无线电的信息年龄
DOI：
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复制
发表时间：
2019
期刊：
影响因子：
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通讯作者：
A. Yener
中科院分区：
文献类型：
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作者：
Shiyang Leng;A. Yener
本文研究认知无线电能量收集通信中的平均信息年龄 (AoI) 最小化。次要用户是能量收集传感器，用于收集环境能量，并用其执行频谱感测和状态更新。状态更新数据是通过机会性地访问主频谱来发送的。具体来说，次要用户的目标是根据其能量可用性和主频谱的可用性自适应地做出感知和更新决策，从而最小化平均 AoI。顺序决策问题被表述为部分可观察的马尔可夫决策过程，并通过动态规划来解决。研究了最佳感知和更新策略的属性，并显示其具有阈值结构。数值结果证实了分析结果。
This paper studies average age of information (AoI) minimization in cognitive radio energy harvesting communications. The secondary user is an energy harvesting sensor that harvests ambient energy with which it performs spectrum sensing and status updates. Status-update data is sent by opportunistically accessing the primary spectrum. Specifically, the secondary user aims to minimize the average AoI by adaptively making sensing and update decisions based on its energy availability and the availability of the primary spectrum. The sequential decision problem is formulated as a partially observable Markov decision process and solved by dynamic programming. The properties of the optimal sensing and updating policies are investigated and shown to have threshold structure. Numerical results confirm the analytical findings.
DOI：
10.1109/glocom.2018.8647212
发表时间：
2018-06
期刊：
2018 IEEE Global Communications Conference (GLOBECOM)
影响因子：
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作者：
Antzela Kosta;N. Pappas;A. Ephremides;Vangelis Angelakis
通讯作者：
Antzela Kosta;N. Pappas;A. Ephremides;Vangelis Angelakis