论文标题
信息年龄：CR-Noma可以帮助吗？
Age of Information: Can CR-NOMA Help?
论文作者
论文摘要
本文的目的是利用认知比率启发的NOMA（CR-NOMA）传播，以降低无线网络中信息的年龄。特别是，通过利用不同数据生成模型的关键特征并将CR-NOMA作为基于遗留正交多访问（OMA）网络的附加组件来开发两个CR-NOMA传输协议。 CR-NOMA的实施几乎不会导致遗产OMA网络的中断这一事实意味着，在基于OMA的各种通信系统中实际实施了拟议的CR-NOMA协议。通过提出的NOMA协议实现的AOI的闭合形式表达式是为了促进性能评估的，并进行了渐近研究，以确定使用Noma来减少无线网络中的AOI的两个好处。一个是，NOMA的使用为用户提供了更多传输机会，这意味着用户可以更频繁地更新其基站。另一个是使用NOMA可以减少访问延迟，即，将用户计划比OMA案例更早地传输，这对于改善无线网络中可用数据的新鲜度很有用。
The aim of this paper is to exploit cognitive-ratio inspired NOMA (CR-NOMA) transmission to reduce the age of information in wireless networks. In particular, two CR-NOMA transmission protocols are developed by utilizing the key features of different data generation models and applying CR-NOMA as an add-on to a legacy orthogonal multiple access (OMA) based network. The fact that the implementation of CR-NOMA causes little disruption to the legacy OMA network means that the proposed CR-NOMA protocols can be practically implemented in various communication systems which are based on OMA. Closed-form expressions for the AoI achieved by the proposed NOMA protocols are developed to facilitate performance evaluation, and asymptotic studies are carried out to identify two benefits of using NOMA to reduce the AoI in wireless networks. One is that the use of NOMA provides users more opportunities to transmit, which means that the users can update their base station more frequently. The other is that the use of NOMA can reduce access delay, i.e., the users are scheduled to transmit earlier than in the OMA case, which is useful to improve the freshness of the data available in the wireless network.
