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）。

公开(公告)号：US09258161B2

公开(公告)日：2016-02-09

申请号：US13839544

申请日：2013-03-15

Applicant: Broadcom Corporation

Inventor： Louay Jalloul ,  Amin Mobasher ,  Sirikiat Ariyavisitakul

IPC: H04L27/26 ,  H04L5/00 ,  H04L5/12

CPC classification number: H04L27/2613 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/12

Abstract: The present disclosure is directed to a system and method for extending a reference signal pattern to define additional reference signals using a phase division multiplexing (PDM) technique. The reference signal pattern can be a predefined reference signal pattern in a wireless communication standard and can be extended to support massive MIMO communication.

Abstract translation: 本公开涉及一种用于使用相位复用（PDM）技术来扩展参考信号模式以定义附加参考信号的系统和方法。 参考信号模式可以是无线通信标准中的预定参考信号模式，并且可以被扩展以支持大量MIMO通信。

公开(公告)号：US20140161205A1

公开(公告)日：2014-06-12

申请号：US13839544

申请日：2013-03-15

Applicant: BROADCOM CORPORATION

Inventor： Louay Jalloul ,  Amin Mobasher ,  Sirikiat Ariyavisitakul

IPC: H04L27/26

CPC classification number: H04L27/2613 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/12

Abstract: The present disclosure is directed to a system and method for extending a reference signal pattern to define additional reference signals using a phase division multiplexing (PDM) technique. The reference signal pattern can be a predefined reference signal pattern in a wireless communication standard and can be extended to support massive MIMO communication.

Abstract translation: 本公开涉及一种用于使用相位复用（PDM）技术来扩展参考信号模式以定义附加参考信号的系统和方法。 参考信号模式可以是无线通信标准中的预定参考信号模式，并且可以被扩展以支持大量MIMO通信。

公开(公告)号：US09768843B2

公开(公告)日：2017-09-19

申请号：US14222202

申请日：2014-03-21

Applicant: Broadcom Corporation

Inventor： Murat Mese ,  Yan Wang ,  Nihar Jindal ,  Louay Jalloul ,  Arogyaswami Paulraj ,  Amin Mobasher ,  Sirikiat Ariyavisitakul ,  James Bennett ,  Sam Alex

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/0413 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0691

Abstract: Systems and methods for enabling a wireless backhaul network between access points (APs) in a wireless network are provided. In an embodiment, the wireless backhaul network is enabled using a Massive Multiple Input Multiple Output (MIMO) radio access technology (RAT). In another embodiment, the wireless backhaul network is established using the same RAT as used by the APs to serve user devices, and can utilize the same time and frequency resources used for user communication.

公开(公告)号：US20140160957A1

公开(公告)日：2014-06-12

申请号：US13730771

申请日：2012-12-28

Applicant: BROADCOM CORPORATION

Inventor： Jun Zheng ,  Nihar Jindal ,  Sirikiat Ariyavisitakul ,  Eric Ojard

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04L5/0048 ,  H04L25/0224 ,  H04W24/06

Abstract: A dedicated calibration device may be utilized by a wireless transceiver device, such as a base station, to compute compensation matrices. The wireless transceiver device and the dedicated calibration device can exchange training sequence signals. Based on the exchanged training sequence signals, the wireless transceiver device and the dedicated calibration device can estimate overall baseband to baseband channel responses taking into account the amplitude and phase responses of the respective transmit and receive radio chains, and the wireless transceiver device can determine the compensation matrices. Furthermore, the wireless transceiver device can estimate a baseband-to-baseband uplink channel response relative to actual user equipment, approximate a downlink channel response using only one of the determined compensation matrices, and perform beamforming to the actual user equipment using the approximated downlink channel response.

Abstract translation: 专用校准装置可以由无线收发器装置（例如基站）利用来计算补偿矩阵。 无线收发器装置和专用校准装置可以交换训练序列信号。 基于交换的训​​练序列信号，无线收发器设备和专用校准设备可以考虑到相应的发射和接收无线电链的幅度和相位响应来估计总体基带到基带信道响应，并且无线收发器设备可以确定 补偿矩阵。 此外，无线收发器设备可以估计相对于实际用户设备的基带到基带上行链路信道响应，仅使用所确定的补偿矩​​阵之一近似下行链路信道响应，并且使用近似下行链路信道对实际用户设备执行波束成形 响应。