Robust port selection

Systems and methods for port selection in a wireless communication system are disclosed. In an embodiment, a method performed by a radio access network (RAN) node for mapping sounding reference signal (SRS) ports to a transport layer comprises: obtaining a channel matrix H for a subcarrier or group of subcarriers of a specific user equipment (UE); and transforming the channel matrix H using singular value decomposition (SVD) of the channel matrix, thereby providing a transformed channel matrix. The method further comprises calculating (204) a beamforming weight using the transformed channel matrix. Embodiments of the RAN node are also disclosed. 公开了用于无线通信系统中的端口选择的系统和方法。在实施例中，一种由无线电接入网络(RAN)节点执行的用于将探测参考信号(SRS)端口映射到传输层的方法，包括：获得用于特定用户设备UE的一个子载波或子载波组的信道矩阵H；以及使用信道矩阵的奇异值分解SVD，变换信道矩阵H，从而提供变换后的信道矩阵。该方法还包括：使用变换后的信道矩阵，计算(204)波束成形权重。还公开了RAN节点的实施例。