论文标题
预订中的信息年龄多访问网络具有随机到达的网络
Age of Information in Reservation Multi-Access Networks with Stochastic Arrivals
论文作者
论文摘要
本文调查了带有保留和数据插槽（FSA-RD）的框架Aloha的信息时代（AOI）的性能。我们考虑一个对称的多访问网络，每个用户以框架方式将其随机生成的状态更新传输到接入点。每个框架由一个预订插槽和几个数据插槽组成。预订插槽由一些迷你插槽组成。在每个预订插槽中，用户使用状态更新数据包进行传输，随机在一个迷你插槽中随机发送简短的预订数据包，以竞争框架的数据插槽。数据插槽分配给那些成功的预订插槽的用户。为了提供优化FSA-RD信息新鲜信息的见解，我们通过应用递归方法来得出FSA-RD下平均AOI的封闭形式表达。数值结果验证了分析表达，并证明了框架大小和保留概率对平均AOI的影响。最终，我们在FSA-RD的AOI性能中进行了比较，具有优化的帧大小和预订概率，以及具有优化的传输概率的插槽Aloha的比较。比较结果表明，FSA-RD可以有效地降低多访问网络的AOI性能，尤其是当网络的状态到达率变得较大时。
This paper investigates the Age of Information (AoI) performance of Frame Slotted ALOHA with Reservation and Data slots (FSA-RD). We consider a symmetric multi-access network where each user transmits its randomly generated status updates to an access point in a framed manner. Each frame consists of one reservation slot and several data slots. The reservation slot is made up of some mini-slots. In each reservation slot, users, with a status update packet to transmit, randomly send short reservation packets in one of the mini-slots to contend for data slots of the frame. The data slots are assigned to those users that succeed in reservation slot. To provide insights in optimizing the information freshness of FSA-RD, we manage to derive a closed-form expression of the average AoI under FSA-RD by applying a recursive method. Numerical results validate the analytical expression and demonstrate the influence of the frame size and reservation probability on the average AoI. We finally perform a comparison between the AoI performance of FSA-RD with optimized frame size and reservation probability, and that of slotted ALOHA with optimized transmission probability. The comparison results show that FSA-RD can effectively reduce the AoI performance of multi-access networks, especially when the status arrival rate of the network becomes large.
