公开(公告)号：US09532256B2

公开(公告)日：2016-12-27

申请号：US14334340

申请日：2014-07-17

Applicant: Broadcom Corporation

Inventor： Sirikiat Ariyavisitakul ,  Daewon Lee

IPC: H04B7/06 ,  H04W24/10 ,  H04B7/04 ,  H04B7/02

CPC classification number: H04W24/10 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639

Abstract: Embodiments include systems and methods for improving the beamforming efficiency of Multi-User Multiple Input Multiple Output (MU-MIMO) and/or Coordinate Beamforming (CB) in wireless multi-access networks. In one aspect, a receiver-aided approach for MU-MIMO and/or CB is provided. Unlike conventional MU-MIMO/CB operation which is transparent to the UE, the receiver-aided approach herein makes information about potential MU-MIMO and/or CB multi-user interference available to UEs being considered for MU-MIMO and/or CB transmission. As such, the UEs can provide Channel State Information (CSI) that is better tailored to actual data transmission conditions than in conventional operation, and the base station can make better decisions regarding MU-MIMO and/or CB operation, user selection, and transmission parameters (e.g., number of data streams, precoder matrix, etc.).

Abstract translation: 实施例包括用于在无线多址网络中改善多用户多输入多输出（MU-MIMO）和/或坐标波束形成（CB）的波束成形效率的系统和方法。 在一个方面，提供了一种用于MU-MIMO和/或CB的接收机辅助方法。 与对UE是透明的常规MU-MIMO / CB操作不同，本文中的接收机辅助方法使得关于被考虑用于MU-MIMO和/或CB传输的UE可用的潜在MU-MIMO和/或CB多用户干扰的信息 。 因此，UE可以提供比传统操作更适合于实际数据传输条件的信道状态信息（CSI），并且基站可以对于MU-MIMO和/或CB操作，用户选择和传输做出更好的决定 参数（例如，数据流的数量，预编码器矩阵等）。