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arXiv 2008.00987cs.ITeess.SPmath.IT
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能量收集传感器网络中的信息年龄-可靠性权衡

Age of Information-Reliability Trade-offs in Energy Harvesting Sensor Networks

Navid Nouri, Darya Ardan, Mahmood Mohassel Feghhi

AI总结:

针对能量收集传感器网络中单次传输AoI分析可靠性保障不足的问题,提出可保证目标传输成功率的确定性、随机化方案及零差错方案的AoI闭式表达式,定义AoI-可靠性权衡概念并验证理论结果。

摘要:

信息年龄(Age of Information, AoI)是近期提出的指标,用于衡量通信方案中信息的新鲜度。本文分析了由一个传感器节点、一个能量源和一个接收器组成的网络:能量源广播能量,传感器通过能量收集技术为电池充电;每当电池充满电时,传感器会测量环境中的某个物理量(称为其状态),并/或将状态发送给接收器。此前已有针对该网络在“每个状态仅发送一次”场景下的AoI完整分析,但该方法无法提供优于单次传输成功率的可靠性保障。本文提出了确定性方案、随机化方案以及零差错方案的AoI闭式表达式,其中确定性与随机化方案可保证每个状态达到期望的传输成功概率。此外,本文定义了名为“AoI-可靠性权衡”的新概念,并给出了所提方案的AoI-可靠性权衡关系。最后,数值结果与理论发现一致。

英文摘要:

Age of Information (AoI) is a recently defined quantity, which measures the freshness of information in a communication scheme. In this paper, we analyze a network that consists of a sensor node, an energy source and a receiver. The energy source is broadcasting energy and the sensor is charging its battery using energy-harvesting technologies. Whenever the battery gets fully charged, the sensor measures some quantity (called its status) from an environment, and (or) transmits its status to the receiver. The full analysis of AoI of this network, in the setting when each status is sent once, is given previously. However, that approach does not present a reliability guarantee better than the success probability of one transmission. In this paper, we present a closed form expression for the AoI of a deterministic and a randomized scheme that guarantee a desired probability of successful transmission for each status, alongside with a zero-error scheme. Furthermore, we define a novel notion called AoI-reliability trade-off and present the AoI-reliability trade-offs of our schemes. Additionally, we show that numerical results match our theoretical findings.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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