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公开(公告)号：US09100844B2
公开(公告)日：2015-08-04
申请号：US13947638
申请日：2013-07-22
Applicant: Broadcom Corporation
Inventor： Louay Jalloul , Sam P. Alex , Soumen Chakraborty , Sindhu Verman , Manish Airy , Anuj Puri
Abstract: A method and apparatus of selecting which of a plurality of receiver chains of a mobile unit to receive wireless signals, is disclosed. One method includes measuring a first receive signal quality while all of the plurality of receiver chains are receiving wireless signals, and measuring a second receive signal quality while a subset of the plurality of receiver chains are receiving wireless signals. The subset of the plurality of receiver chains are selected to receive wireless signal unless the first receive signal quality is a threshold better than the second receive signal quality. If the first receive signal quality is a threshold better than the second receive signal quality then all the plurality of receiver chains are selected to receive wireless signals.
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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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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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25.发明授权Reducing complexity and power consumption in cellular networks with carrier aggregation 有权通过载波聚合降低蜂窝网络的复杂度和功耗公开(公告)号：US09532237B2
公开(公告)日：2016-12-27
申请号：US13837862
申请日：2013-03-15
Applicant: Broadcom Corporation
Inventor： Djordje Tujkovic , Louay Jalloul , Robert Lorenz
CPC classification number: H04W24/02 , H04L5/001 , H04L5/003 , H04L5/0091
Abstract: In a communications network with carrier aggregation (CA), embodiments enable the network to advertise to a supported wireless device not only whether or not aggregated component carriers allocated to the wireless are intra-band adjacent but further whether or not the allocated component carriers are collocated. Embodiments further enable the wireless to advertise its CA capabilities including the support of adjacent collocated CA and/or non-adjacent collocated CA. Embodiments thus provide systems/methods for the exploitation of special conditions provided by adjacent collocated component carriers to reduce processing complexity and power consumption for certain types of wireless device transmitter/receiver architectures and to support intra-band adjacent CA for other types of UE transmitter/receiver architectures.
Abstract translation: 在具有载波聚合（CA）的通信网络中，实施例使得网络能够向被支持的无线设备通告，不仅分配给无线网络的聚合分量载波是否是带内相邻的，而且分配的分量载波是否并置 。 实施例还使得无线能够通告其CA能力，包括相邻并置CA和/或非相邻并置CA的支持。 因此，实施例提供了用于利用由相邻并置分量载波提供的特殊条件的系统/方法，以降低某些类型的无线设备发射机/接收机架构的处理复杂度和功耗，并支持用于其他类型的UE发射机/ 接收机架构。
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Patent Agency Ranking
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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公开(公告)号：US09392549B2
公开(公告)日：2016-07-12
申请号：US14298369
申请日：2014-06-06
Applicant: Broadcom Corporation
Inventor： Amin Mobasher , Sam Alex , Louay Jalloul
CPC classification number: H04W52/146 , H04B7/0478 , H04B7/0632 , H04B7/0639 , H04L5/00 , H04L5/0048 , H04L25/0204 , H04L25/0222 , H04W52/241
Abstract: Where receiver performance at a User Equipment (UE) is similar using a coarse precoder codebook as using a fine resolution precoder codebook, the signaling of a two-component precoder codebook is modified such that a precoder codeword is signaled to the UE in only a portion of the physical resources allocated for precoder codeword signaling to the UE. The remaining portion of the allocated physical resources is used to signal control information to improve the UE's performance.
Abstract translation: 在用户设备（UE）的接收机性能使用粗预编码器码本作为使用精细分辨率预编码器码本的情况下相似的情况下，修改双分量预编码码本的信令，使得预编码器码字仅在部分信令给UE 分配给UE的预编码器码字信令的物理资源。 所分配的物理资源的剩余部分用于信号控制信息以改善UE的性能。
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公开(公告)号：US09294259B2
公开(公告)日：2016-03-22
申请号：US14042107
申请日：2013-09-30
Applicant: Broadcom Corporation
Inventor： Louay Jalloul , Amin Mobasher , Sam Alex
CPC classification number: H04L5/1461 , H04B7/0617 , H04B7/10 , H04L5/143
Abstract: A multiple input multiple output (MIMO) antenna system is implemented for communications in a wireless device. MIMO beamforming techniques are utilized to improve communications, and may be utilized in full-duplex mode. Techniques include the formation of beamforming patterns having orthogonal polarizations to one another at each communication device, but having matching polarization between transmit/receive pairs located at each respective communication device. Techniques also include the formation of beamforming patterns in a direction towards another communication device to maximize transmit power in that direction while inducing nulls in the beamforming pattern to reduce self-interference coupling via antennas configured for reception. Full-duplex communications are improved through monitoring of the self-interference coupling and adapting the beamforming patterns to reduce it. Beamforming vectors may be generated by solving a cost function that may include an additional constraint of reduction of self-interference coupling.
Abstract translation: 多输入多输出（MIMO）天线系统被实现用于无线设备中的通信。 利用MIMO波束形成技术来改善通信，并且可以在全双工模式下使用。 技术包括在每个通信设备处形成具有彼此正交极化但在每个相应通信设备处的发送/接收对之间具有匹配极化的波束成形模式。 技术还包括在朝向另一个通信设备的方向上形成波束成形模式以使该方向上的发射功率最大化，同时在波束形成模式中引起零点以减少经配置以用于接收的天线的自干扰耦合。 通过监测自干扰耦合并适应波束形成模式以减少全双工通信，从而改善了全双工通信。 波束成形向量可以通过解决可能包括减少自干扰耦合的附加约束的成本函数来生成。
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公开(公告)号：US09253785B2
公开(公告)日：2016-02-02
申请号：US13886955
申请日：2013-05-03
Applicant: Broadcom Corporation
Inventor： Louay Jalloul , Djordje Tujkovic , Ahmad Mohammed
CPC classification number: H04W72/082 , H04B7/024 , H04B17/16 , H04L1/0077 , H04L1/1819 , H04L1/1874
Abstract: Embodiments enable cooperative transmissions from a group of cells (can include the serving cell and one or more neighboring cells) to a user equipment (UE). The cooperative transmissions emulate Hybrid Automatic Repeat Request (HARQ) transmissions to the UE. Specifically, when the UE is experiencing high interference, the UE's serving cell can create a transmit incremental redundancy (IR) group for the UE, which is used to transmit information in a HARQ-like fashion to the UE. Because interference is reduced, the UE can decode the information at a lower coding rate and higher coding gain.
Abstract translation: 实施例使得能够向用户设备（UE）提供来自一组小区（可以包括服务小区和一个或多个相邻小区）的协作传输。 协作传输模拟对UE的混合自动重传请求（HARQ）传输。 具体地，当UE正在经历高干扰时，UE的服务小区可以创建用于UE的发射增量冗余（IR）组，其用于以类似HARQ的方式向UE发送信息。 由于干扰减少，所以UE可以以较低的编码率和更高的编码增益对信息进行解码。
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