论文标题
平均不规则重复的信息年龄
Average Age of Information of Irregular Repetition Slotted ALOHA
论文作者
论文摘要
侧翼传统指标，例如吞吐量和可靠性，信息时代（AOI）正在成为捕获物联网系统性能的基本工具。在这种情况下，我们专注于一个设置，在该设置中，大量节点尝试通过共享渠道将时间stamp的更新传递到公共目的地，并调查不同无赠款访问策略在接收方维护新信息的能力。具体而言，我们首次得出了通过不规则重复的aloha（irsa）获得的平均AOI的精确闭合形式表达，并将其性能与开槽的Aloha方法的性能进行了比较。我们的分析揭示了现代随机访问方案的潜力，并指出了一些基本的权衡，为适当的系统设计提供了有用的提示。
Flanking traditional metrics such as throughput and reliability, age of information (AoI) is emerging as a fundamental tool to capture the performance of IoT systems. In this context, we focus on a setup in which a large number of nodes attempt delivery of time-stamped updates to a common destination over a shared channel, and investigate the ability of different grant-free access strategies to maintain fresh information at the receiver. Specifically, we derive for the first time an exact closed-form expression of the average AoI achieved by irregular repetition slotted ALOHA (IRSA), and compare its performance to that of a slotted ALOHA approach. Our analysis reveals the potential of modern random access schemes, and pinpoints some fundamental trade-offs, providing useful hints for proper system design.
