arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.02672cs.NI
收藏

mmW异构网络中基于DNN的波束选择

DNN Based Beam Selection in mmW Heterogeneous Networks

Deepa Jagyasi, Marceau Coupechoux

摘要:

我们考虑异构蜂窝网络,其中多个小小区毫米波(mmW)基站(BS)与传统的6 GHz以下的宏BS共存。在mmW频带中,小小区使用多个窄波束来确保足够的覆盖,并且用户设备(UE)必须选择最佳小小区和最佳波束以便接入网络。该过程通常基于穷举搜索,可能会引入不可接受的延迟。为了解决这个问题,我们依赖于sub-6 GHz宏BS支持,并提出了一种深度神经网络(DNN)架构,该架构利用sub-6 GHz网络的信道状态信息(CSI)的基本组件作为输入特征。DNN的输出是可以提供最佳通信性能的mmW BS和波束选择。在这组特征中,我们避免使用UE位置,这可能不是每个设备都容易获得的。我们制定了一个毫米波BS选择和波束选择问题的分类和回归问题,分别提出了一个联合解决方案,使用分支神经网络。与传统的穷举搜索结果的数值比较表明,所提出的设计表现出更好的性能比穷举搜索在延迟方面至少85%的准确率。

英文摘要:

We consider a heterogeneous cellular network wherein multiple small cell millimeter wave (mmW) base stations (BSs) coexist with legacy sub-6GHz macro BSs. In the mmW band, small cells use multiple narrow beams to ensure sufficient coverage and User Equipments (UEs) have to select the best small cell and the best beam in order to access the network. This process usually based on exhaustive search may introduce unacceptable latency. In order to address this issue, we rely on the sub-6GHz macro BS support and propose a deep neural network (DNN) architecture that utilizes basic components from the Channel State Information (CSI) of sub-6GHz network as input features. The output of the DNN is the mmW BS and beam selection that can provide the best communication performance. In the set of features, we avoid using the UE location, which may not be readily available for every device. We formulate a mmW BS selection and beam selection problem as a classification and regression problem respectively and propose a joint solution using a branched neural network. The numerical comparison with the conventional exhaustive search results shows that the proposed design demonstrate better performance than exhaustive search in terms of latency with at least 85\% accuracy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑