论文标题
通过统计无线电图提供超可靠的低延迟通信
Delivering Ultra-Reliable Low-Latency Communications via Statistical Radio Maps
论文作者
论文摘要
超级可靠的低延迟通信(URLLC)的高可靠性保证需要准确了解通道统计信息,这用作速率选择的输入。利用通道统计信息的空间一致性是一种有希望的解决方案,从而使基站可以预测传播条件并从网络以前用户收集的样本中为新用户选择新用户的通信参数。基于这个想法,本文提供了一个及时的框架,可以通过所谓的统计无线电图来利用远程频道空间相关性,从而使URLLC通信具有给定的统计保证。通过在基于位置的无线电图和通道图呈现的潜在空间中预测通道容量分布来体现该框架,后者是基于通道状态信息(CSI)的无本地化方法。还显示了如何使用地图在实现目标可靠性水平的新位置中选择传输速率。最后,还讨论了未来的一些方向和研究挑战。
High reliability guarantees for Ultra-Reliable Low-Latency Communications (URLLC) require accurate knowledge of channel statistics, used as an input for rate selection. Exploiting the spatial consistency of channel statistics arises as a promising solution, allowing a base station to predict the propagation conditions and select the communication parameters for a new user from samples collected from previous users of the network. Based on this idea, this article provides a timely framework to exploit long-range channel spatial correlation through so-called statistical radio maps, enabling URLLC communications with given statistical guarantees. The framework is exemplified by predicting the channel capacity distribution both in a location-based radio map and in a latent space rendered by a channel chart, the latter being a localization-free approach based on channel state information (CSI). It is also shown how to use the maps to select the transmission rate in a new location that achieves a target level of reliability. Finally, several future directions and research challenges are also discussed.