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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.
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2.发明授权公开(公告)号：US09496933B2
公开(公告)日：2016-11-15
申请号：US14142310
申请日：2013-12-27
Applicant: Broadcom Corporation
Inventor： Louay Jalloul , Amin Mobasher , Nihar Jindal , Sam Alex , Murat Mese
CPC classification number: H04B7/0452 , H04B7/0689 , H04L5/0005 , H04L5/0007 , H04L5/0053 , H04W88/10
Abstract: As wireless networks evolve, network providers may utilize legacy LTE devices as well as devices that support massive multi-input, multiple output (M-MIMO). Systems and methods for simultaneously servicing legacy LTE devices and M-MIMO devices are provided. In embodiments, a transmission zone for M-MIMO communications is defined within a legacy, non M-MIMO radio frame. The location of the M-MIMO transmission zone is transmitted to user devices. For example, an identification of the location of the M-MIMO transmission zone is transmitted in a system information message. In a further example, the location of the M-MIMO transmission zone is transmitted in the downlink control information. The location of the M-MIMO transmission zone may be defined dynamically based on a variety of criteria. In addition or alternatively, a set of pre-defined transmission zones may be utilized.
Abstract translation: 随着无线网络的发展，网络提供商可以利用传统的LTE设备以及支持大量多输入多输出（M-MIMO）的设备。 提供了用于同时维护传统LTE设备和M-MIMO设备的系统和方法。 在实施例中，在传统的非M-MIMO无线电帧内定义用于M-MIMO通信的传输区域。 M-MIMO传输区的位置被传送到用户设备。 例如，在系统信息消息中发送M-MIMO传输区域的位置的标识。 在另一示例中，在下行控制信息中发送M-MIMO传输区的位置。 M-MIMO传输区域的位置可以基于各种标准动态定义。 另外或替代地，可以使用一组预定义的传输区域。
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3.发明授权公开(公告)号：US09479236B2
公开(公告)日：2016-10-25
申请号：US14081721
申请日：2013-11-15
Applicant: Broadcom Corporation
Inventor： Lek (Sirikiat) Ariyavisitakul , Louay Jalloul , Amin Mobasher
CPC classification number: H04B7/0452 , H04B7/0456 , H04B7/0626 , H04B7/0632 , H04B7/0689 , H04L25/03343 , H04L25/03942 , H04W72/121
Abstract: For an infinite number of transmit antennas at a base station (BS), matched filter (MF) precoding (a type of precoding used to perform SU-MIMO transmission) becomes optimal for performing spatial multiplexing. But observations have shown that precoding types for performing MU-MIMO transmission can perform significantly better than MF precoding for a realizable number of transmit antennas at the BS, even while using the simplest precoding types for MU-MIMO transmission. For large inter-cell interference typically encountered by user terminals (UTs) at or near the boundary of the cell served by the BS, MF precoding can still be used to eliminate or reduce the need for coordination among cells, which consumes network and back-haul resources.
Abstract translation: 对于基站（BS）的无限数量的发射天线，匹配滤波器（MF）预编码（用于执行SU-MIMO传输的预编码的类型）对于执行空间复用是最佳的。 但是观察结果表明，即使在使用MU-MIMO传输的最简单的预编码类型时，用于执行MU-MIMO传输的预编码类型也可以执行明显优于在BS处的可实现数量的发射天线的MF预编码。 对于在由BS服务的小区的边界处或附近的用户终端（UT）通常遇到的大的小区间干扰，MF预编码仍然可以用于消除或减少对小区之间的协调的需要， 运输资源。
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公开(公告)号：US09106280B2
公开(公告)日：2015-08-11
申请号：US14042257
申请日：2013-09-30
Applicant: Broadcom Corporation
Inventor： Sam Alex , Amin Mobasher , Louay Jalloul
CPC classification number: H04B7/0413 , H04B7/0404 , H04B7/0684 , H04B7/0691 , H04L25/0202 , H04L25/0204 , H04L25/0228
Abstract: Embodiments recognize that in MIMO and M-MIMO systems, physical antennas tend to be closely spaced to each other (e.g., a grid). As a result, a spatial correlation typically exists between physical antennas as well as between transmissions from logical antenna ports. Embodiments exploit this characteristic to reduce the amount of pilot signaling needed to enable downlink channel estimation. Specifically, embodiments limit pilot signaling to only a subset of supported logical antenna ports and rely on spatial correlation information to interpolate channels from logic antenna ports for which no pilot signaling is used.
Abstract translation: 实施例认识到，在MIMO和M-MIMO系统中，物理天线倾向于彼此紧密地间隔（例如网格）。 结果，在物理天线之间以及来自逻辑天线端口的传输之间通常存在空间相关性。 实施例利用该特性来减少启用下行链路信道估计所需的导频信令量。 具体地，实施例将导频信令限制到仅支持的逻辑天线端口的子集，并且依赖于空间相关信息从不使用导频信令的逻辑天线端口内插信道。
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公开(公告)号：US09094064B2
公开(公告)日：2015-07-28
申请号：US14042244
申请日：2013-09-30
Applicant: Broadcom Corporation
Inventor： Sam Alex , Louay Jalloul , Amin Mobasher
CPC classification number: H04B7/0413 , H04B7/0404 , H04B7/0684 , H04B7/0691 , H04L25/0202 , H04L25/0204 , H04L25/0228
Abstract: Embodiments provide systems and methods for enabling a first transceiver to learn beamforming weights (e.g., Eigen beamforming weights) to a second transceiver, without any pilot signaling or explicit beamforming weight signaling from the second transceiver. In another embodiment, beamforming weight vectors to enable a multi-symbol spatial rate can be learned by the first transceiver.
Abstract translation: 实施例提供用于使第一收发器能够向第二收发器学习波束成形权重（例如，本征波束形成权重）的系统和方法，而没有来自第二收发器的任何导频信令或显式波束成形权重信令。 在另一个实施例中，可以通过第一收发器来学习能够实现多符号空间速率的波束成形权重向量。
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Patent Agency Ranking
公开(公告)号：US20140307816A1
公开(公告)日：2014-10-16
申请号：US14042257
申请日：2013-09-30
Applicant: Broadcom Corporation
Inventor： Sam Alex , Amin Mobasher , Louay Jalloul
CPC classification number: H04B7/0413 , H04B7/0404 , H04B7/0684 , H04B7/0691 , H04L25/0202 , H04L25/0204 , H04L25/0228
Abstract: Embodiments recognize that in MIMO and M-MIMO systems, physical antennas tend to be closely spaced to each other (e.g., a grid). As a result, a spatial correlation typically exists between physical antennas as well as between transmissions from logical antenna ports. Embodiments exploit this characteristic to reduce the amount of pilot signaling needed to enable downlink channel estimation. Specifically, embodiments limit pilot signaling to only a subset of supported logical antenna ports and rely on spatial correlation information to interpolate channels from logic antenna ports for which no pilot signaling is used.
Abstract translation: 实施例认识到，在MIMO和M-MIMO系统中，物理天线倾向于彼此紧密地间隔（例如网格）。 结果，在物理天线之间以及来自逻辑天线端口的传输之间通常存在空间相关性。 实施例利用该特性来减少启用下行链路信道估计所需的导频信令量。 具体地，实施例将导频信令限制到仅支持的逻辑天线端口的子集，并且依赖于空间相关信息从不使用导频信令的逻辑天线端口内插信道。
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公开(公告)号：US20140254514A1
公开(公告)日：2014-09-11
申请号：US14197714
申请日：2014-03-05
Applicant: Broadcom Corporation
Inventor： Amin Mobasher , Louay Jalloul
IPC: H04B7/04
CPC classification number: H04B7/0486 , H04B7/0413 , H04B7/0456
Abstract: Multiple input multiple output systems using a transmit precoder codebook designed for a four-transmitter (4Tx) antenna configuration are described. The 4Tx antenna configuration is an attractive option for base stations in cellular network environments and it is desirable to use a transmitter precoder codebook that provides sufficient granularity in typical operating scenarios, and to address various antenna configurations. In an embodiment, the transmit precoder codebook can be used for a variety of transmit antenna configurations including uniform linear antenna arrays, cross-polarized antenna arrays and uncorrelated antenna arrays. In another embodiment, the transmit precoder codebook is a two-component codebook, with a first precoder component signaled at a first rate and a second precoder component signaled at a second higher rate.
Abstract translation: 描述了使用为四发射器（4Tx）天线配置设计的发射预编码器码本的多输入多输出系统。 4Tx天线配置对于蜂窝网络环境中的基站是有吸引力的选择，并且期望使用在典型操作场景中提供足够粒度并且寻址各种天线配置的发射机预编码器码本。 在一个实施例中，发射预编码器码本可用于包括均匀线性天线阵列，交叉极化天线阵列和不相关天线阵列的各种发射天线配置。 在另一实施例中，发送预编码器码本是双分量码本，具有以第一速率发信号的第一预编码器分量和以第二较高速率发信号的第二预编码器分量。
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公开(公告)号：US09125081B2
公开(公告)日：2015-09-01
申请号：US14213031
申请日：2014-03-14
Applicant: Broadcom Corporation
Inventor： Arogyaswami Paulraj , Murat Mese , Yan Wang , Nihar Jindal , Louay Jalloul , Amin Mobasher , Sam Alex
IPC: H04W4/00 , H04W28/02 , H04B7/04 , H04W24/08 , H04W72/04 , H04L5/00 , H04W24/02 , H04W16/00 , H04B7/06 , H04W88/08
CPC classification number: H04W72/0433 , H04B7/0413 , H04B7/0452 , H04B7/0617 , H04L5/0023 , H04L5/0092 , H04L5/0094 , H04W16/00 , H04W16/04 , H04W24/02 , H04W24/08 , H04W28/0215 , H04W72/04 , H04W88/08 , H04W88/10
Abstract: Systems and methods for channel assignment configuration in a multiple access point (AP) environment are provided. The multiple APs can be homogeneous or heterogeneous and can implement one or more radio access technologies (RATs), including Massive Multiple Input Multiple Output (M-MIMO) RATs. A channel assignment configuration for a user equipment (UE) can identify one or more communication channels to be established to serve the UE by one or more of the APs.
Abstract translation: 提供了多接入点（AP）环境中信道分配配置的系统和方法。 多个AP可以是同质的或异构的，并且可以实现一个或多个无线电接入技术（RAT），包括大规模多输入多输出（M-MIMO）RAT。 用户设备（UE）的信道分配配置可以识别一个或多个待建立的通信信道，以便由一个或多个AP服务于UE。
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公开(公告)号：US09462593B2
公开(公告)日：2016-10-04
申请号：US13838387
申请日：2013-03-15
Applicant: Broadcom Corporation
Inventor： Djordje Tujkovic , Louay Jalloul , Amin Mobasher
CPC classification number: H04W72/082 , H04J11/0053
Abstract: A framework for enabling a user equipment (UE) to apply interference suppression processing during network conditions that are favorable to interference suppression or that are known is provided. The framework includes an interference suppression (IS) time and frequency (time/frequency) zone, which can be scheduled by a serving base station and signaled to the UE. In an embodiment, the serving base station coordinates with the interfering base station(s) to create a network condition favorable to interference suppression at the UE during the IS time/frequency zone. In another embodiment, the serving base station opportunistically schedules the IS time/frequency zone for the UE whenever it determines favorable transmission parameters being used or scheduled for use by the interfering base station(s). The UE applies interference suppression processing within the IS time/frequency zone, thereby improving receiver performance. Outside the time/frequency zone, the UE may disable interference suppression processing so as not to degrade receiver performance.
Abstract translation: 提供用于使用户设备（UE）在有利于干扰抑制或已知的网络条件下应用干扰抑制处理的框架。 该框架包括干扰抑制（IS）时间和频率（时间/频率）区域，其可由服务基站调度并发信号通知给UE。 在一个实施例中，服务基站与干扰基站协调以创建有利于在IS时间/频率区域期间UE处的干扰抑制的网络条件。 在另一实施例中，只要服务基站确定正在使用或调度以供干扰基站使用的有利的传输参数，机会地为UE的IS时间/频率区域进行调度。 UE在IS时间/频率区域内应用干扰抑制处理，从而提高接收机的性能。 在时间/频区之外，UE可以禁用干扰抑制处理，以免降低接收机性能。
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公开(公告)号：US09407337B2
公开(公告)日：2016-08-02
申请号：US14042109
申请日：2013-09-30
Applicant: Broadcom Corporation
Inventor： Louay Jalloul , Sam Alex , Amin Mobasher
CPC classification number: H04B7/0413 , H04B7/0404 , H04B7/0684 , H04B7/0691 , H04L25/0202 , H04L25/0204 , H04L25/0228
Abstract: Antenna systems and methods for Massive Multi-Input-Multi-Output (MIMO) (M-MIMO) communication are provided. Antennas systems include a M-MIMO transmitter architecture with a hybrid matrix structure. The hybrid matrix structure protects against transmit path component failures and ensures that a spatial rate of the MIMO transmitter is not degraded by the failures. Antenna systems and methods also include antenna selection schemes for selecting a subset of antennas from a plurality of antennas to transmit to a receiver.
Abstract translation: 提供了用于大规模多输入多输出（MIMO）（M-MIMO）通信的天线系统和方法。 天线系统包括具有混合矩阵结构的M-MIMO发射机架构。 混合矩阵结构保护发射路径组件故障，并确保MIMO发射机的空间速率不会由于故障而降级。 天线系统和方法还包括用于从多个天线中选择天线子集以发射到接收机的天线选择方案。
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