论文标题
关于随机访问网络中信息时代的重新召集价值，而无需反馈
On the Value of Retransmissions for Age of Information in Random Access Networks without Feedback
论文作者
论文摘要
我们专注于一个没有反馈的插槽aloha系统，其中节点将延时更新传输到公共网关。我们偏离了经典的生产模式，我们假设每个发射器可能并不总是有新的信息可以传递，并解决了从信息年龄（AOI）的角度来发送陈旧数据包是否可能是有益的基本问题。依靠对马尔可夫流程的信号流图分析，研究表明，当由于通道障碍而导致数据包丢失时，重新启动确实可以降低新信息的低生成率，尽管以吞吐量为代价。
We focus on a slotted ALOHA system without feedback, in which nodes transmit time-stamped updates to a common gateway. Departing from the classical generate-at-will model, we assume that each transmitter may not always have fresh information to deliver, and tackle the fundamental question of whether sending stale packets can be beneficial from an age-of-information (AoI) standpoint. Leaning on a signal-flow-graph analysis of Markov processes the study reveals that, when packets can be lost due to channel impairments, retransmissions can indeed lower AoI for low generation rates of new information, although at a cost in terms of throughput.
