论文标题
多源求职服务器中信息年龄的联合绩效分析
Joint performance analysis of ages of information in a multi-source pushout server
论文作者
论文摘要
信息时代（AOI）已被广泛接受为实时状态更新系统中状态信息新鲜度的量度。在许多这样的系统中，多个来源共享一个有限的网络资源，因此，为各个来源定义的AOIS应相互关联。但是，在状态更新系统中，研究两个或多个AOI与多个来源的AOI的相关性没有发现的结果。在这项工作中，我们考虑了共享共同服务设施的多源系统，并提供了一个框架来调查多个AOI的联合性能。然后，我们将框架应用于具有多个来源的简单推翻服务器，并在具有独立的M/G输入的情况下得出AOI的关节拉普拉斯转换的封闭形式公式。我们进一步显示了两个源系统中AOI的相关系数的某些属性。
Age of information (AoI) has been widely accepted as a measure quantifying freshness of status information in real-time status update systems. In many of such systems, multiple sources share a limited network resource and therefore the AoIs defined for the individual sources should be correlated with each other. However, there are not found any results studying the correlation of two or more AoIs in a status update system with multiple sources. In this work, we consider a multi-source system sharing a common service facility and provide a framework to investigate joint performance of the multiple AoIs. We then apply our framework to a simple pushout server with multiple sources and derive a closed-form formula of the joint Laplace transform of the AoIs in the case with independent M/G inputs. We further show some properties of the correlation coefficient of AoIs in the two-source system.
