公开(公告)号：US09420588B2

公开(公告)日：2016-08-16

申请号：US14446970

申请日：2014-07-30

Applicant: QUALCOMM Incorporated

Inventor： Jibing Wang

IPC: H04W4/00 ,  H04W72/04 ,  H04W84/12 ,  H04W72/08 ,  H04W72/12

CPC classification number: H04W72/0453 ,  H04W72/0413 ,  H04W72/082 ,  H04W72/1215 ,  H04W84/12

Abstract: The use of multiple radios using different radio access technologies (RATs) on a wireless station can result in interference that can be mitigated by reducing, on a packet-by-packet basis, the bandwidths of communications using one of the RATs. For example, the bandwidth of wireless local area network (WLAN) communications sent or received by a wireless station can be reduced in order to avoid interference with Long-term Evolution (LTE) or LTE-Advanced (LTE-A) communications. A wireless station can determine that only a portion of an interfering bandwidth used by a first radio will interfere with the receipt of communications on a second radio, then the wireless station can dynamically adjust its transmissions on the first radio to only use non-interfering frequencies.

Abstract translation: 在无线站上使用使用不同无线电接入技术（RAT）的多个无线电装置可能会导致干扰，这可以通过在逐个分组的基础上减少使用其中一个RAT的通信带宽来减轻干扰。 例如，可以减少由无线站发送或接收的无线局域网（WLAN）通信的带宽，以避免对长期演进（LTE）或LTE高级（LTE-A）通信的干扰。 无线站可以确定第一无线电使用的干扰带宽的仅一部分将干扰在第二无线电上的通信的接收，则无线站可以在第一无线电上动态地调整其传输，以仅使用非干扰频率 。

公开(公告)号：US20160065251A1

公开(公告)日：2016-03-03

申请号：US14470822

申请日：2014-08-27

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Roberto Rimini ,  Richard Neil Braithwaite ,  Jibing Wang

IPC: H04B1/04

Abstract: A method for wireless communication by a wireless communication device is described. The wireless communication device determines that an aggressor radio in the wireless communication device is causing (or can potentially cause) self-jamming to a victim radio in the wireless communication device. A precoding configuration is selected based on one or more link throughput metrics and one or more self-jamming metrics. The precoding configuration is applied to transmissions of the aggressor radio.

Abstract translation: 描述了一种由无线通信设备进行无线通信的方法。 无线通信设备确定无线通信设备中的侵略者无线电在无线通信设备中引起（或可能潜在地）对受害者无线电进行自身干扰。 基于一个或多个链路吞吐量度量和一个或多个自干扰度量来选择预编码配置。 预编码配置被应用于侵入者无线电的传输。

公开(公告)号：US09197264B1

公开(公告)日：2015-11-24

申请号：US14330558

申请日：2014-07-14

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Wooseok Nam ,  Roberto Rimini ,  Jibing Wang ,  Yongbin Wei ,  Muhammad Sayed Khairy Abdelghaffar ,  Joseph Patrick Burke

IPC: H04B1/10 ,  H04B7/04

CPC classification number: H04B7/0854 ,  H04B1/1027 ,  H04B7/0691

Abstract: Methods, systems, and devices are described for reducing interference for wireless communication in a wireless device with multiple receive antennas. In aspects for reducing interference, a combined signal may be generated by combining a plurality of received signals from a plurality of respective receive antennas of the wireless device, for example, using one or more different types of combining A common distortion of the plurality of received signals may be estimated based at least in part on the combined signal, and interference reduction may be performed on one or more of the plurality of received signals based at least in part on the estimated common distortion.

Abstract translation: 描述了用于减少具有多个接收天线的无线设备中的无线通信的干扰的方法，系统和设备。 在减少干扰的方面中，可以通过组合来自无线设备的多个相应接收天线的多个接收信号来生成组合信号，例如，使用一种或多种不同类型的组合。 可以至少部分地基于组合信号来估计信号，并且可以至少部分地基于所估计的共同失真来对多个接收信号中的一个或多个执行干扰减少。

公开(公告)号：US08923109B2

公开(公告)日：2014-12-30

申请号：US14268961

申请日：2014-05-02

Applicant: QUALCOMM Incorporated

Inventor： Jibing Wang ,  Tamer Adel Kadous

IPC: H04J11/00 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0447 ,  H04B7/0417 ,  H04B7/0482 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0639 ,  H04L1/06 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/023 ,  H04L25/0204 ,  H04L25/0248 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: Systems and methodologies are described that facilitate constructing unitary matrices that may be utilized in linear precoding for multiple-input multiple-output (MIMO) wireless communication systems. Each unitary matrix may be generated by combining (e.g., multiplying) a diagonal matrix with a Discrete Fourier Transform (DFT) matrix. The unitary matrices may be utilized to provide feedback related to a channel and/or control transmission over a channel based upon obtained feedback.

公开(公告)号：US20140341311A1

公开(公告)日：2014-11-20

申请号：US14268961

申请日：2014-05-02

Applicant: QUALCOMM Incorporated

Inventor： Jibing Wang ,  Tamer Adel Kadous

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0447 ,  H04B7/0417 ,  H04B7/0482 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0639 ,  H04L1/06 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/023 ,  H04L25/0204 ,  H04L25/0248 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: Systems and methodologies are described that facilitate constructing unitary matrices that may be utilized in linear precoding for multiple-input multiple-output (MIMO) wireless communication systems. Each unitary matrix may be generated by combining (e.g., multiplying) a diagonal matrix with a Discrete Fourier Transform (DFT) matrix. The unitary matrices may be utilized to provide feedback related to a channel and/or control transmission over a channel based upon obtained feedback.

公开(公告)号：US20140341098A1

公开(公告)日：2014-11-20

申请号：US14277613

申请日：2014-05-14

Applicant: QUALCOMM Incorporated

Inventor： James Simon Cho ,  Arunkumar Jayaraman ,  Guido Robert Frederiks ,  Zhanfeng Jia ,  Shu Du ,  Alireza Raissinia ,  Jibing Wang ,  Sandip HomChaudhuri

IPC: H04W52/02 ,  H04L1/08

CPC classification number: H04W52/0238 ,  H04L1/08 ,  H04W52/0206 ,  H04W52/0216 ,  H04W52/0235 ,  H04W72/02 ,  H04W84/12 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

Abstract: Methods, systems, and devices are described for power conservation in a wireless communications system through efficient transmissions and acknowledgements of information between an AP and a station. The time between a determination by a station to enter a power saving mode and entering network sleep mode by the station may be reduced through a transmission, by an AP, of an MPDU to the station successive to an SIFS after transmission of an acknowledgement to the station of a PS-Poll frame from the station. The time to enter a power saving mode by a station may also be reduced through transmission of A-MPDUs in which a last MPDU of the A-MPDU has an indicator bit cleared to indicate no additional data is to be transmitted. An AP may prevent a retransmission of an MPDU to the station in the absence of an acknowledgement from the station, to further enhance efficiency.

Abstract translation: 描述了无线通信系统中的功率节省的方法，系统和设备，通过AP和站之间的有效传输和信息确认。 在站点确定进入节电模式并进入网络睡眠模式之间的时间可以通过AP向MPI发送确认之后的MPDU向连续的SIFS的站传输而减少 站点的PS-Poll帧。 由站点进入省电模式的时间也可以通过A-MPDU的传输来减少，其中A-MPDU的最后一个MPDU被清除以指示不发送附加数据。 在没有来自站的确认的情况下，AP可以阻止对站的MPDU的重传，以进一步提高效率。

公开(公告)号：US20140269857A1

公开(公告)日：2014-09-18

申请号：US13925651

申请日：2013-06-24

Applicant: QUALCOMM Incorporated

Inventor： Roberto Rimini ,  Jibing Wang

IPC: H04L27/00

CPC classification number: H04L27/0008 ,  H04B1/1036 ,  H04W16/14

Abstract: A wireless communication device including two or more aggressor transmitters and a victim receiver that is adversely affected by intermodulation distortion (IMD) components associated with the signals transmitted by the two or more aggressor transmitters. Because the aggressor transmitters and the victim receiver are located on the same device, the transmit waveforms that contribute to the IMD components are known and available. More specifically, digital baseband samples used by the aggressor transmitters to generate the transmit waveforms are available. These digital baseband samples are used to reconstruct the IMD component on the wireless device. This reconstructed (estimated) IMD component is provided to the victim receiver, and is subtracted from a signal received by the victim receiver, thereby effectively removing the IMD component present in this received signal. An adaptive filter using a Volterra series can be used to estimate the IMD component in response to the transmitter digital baseband samples.

Abstract translation: 一种无线通信设备，包括两个或多个攻击者发射机和受到两个或多个攻击者发射机发射的信号相关联的互调失真（IMD）成分的不利影响的受害接收机。 因为侵略者发射机和受害者接收机位于同一设备上，所以有助于IMD组件的发射波形是已知的并且是可用的。 更具体地，侵略者发射机使用的数字基带采样可用于产生发射波形。 这些数字基带样本用于重建无线设备上的IMD组件。 将该重建的（估计的）IMD分量提供给受害者接收机，并从受害者接收机接收到的信号中减去，从而有效地去除该接收信号中存在的IMD分量。 使用Volterra系列的自适应滤波器可用于响应于发射机数字基带样本来估计IMD分量。

公开(公告)号：US20140269540A1

公开(公告)日：2014-09-18

申请号：US13843444

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Jibing Wang

IPC: H04W72/12

CPC classification number: H04W72/1215

Abstract: This disclosure provides coexistence strategies for a combined wireless communications device using multiple wireless protocols, such as WLAN and LTE. One or more periods having increased interference potential during an upcoming communication event of one wireless protocol may be identified and the transmission duration of another wireless protocol may be dynamically adjusted to reduce interference. In one aspect, a first period of potential interference during an upcoming LTE transmission may be predicted based on allocated LTE transmission power. The duration of the transmission may be adjusted so that a response to the transmission does not arrive during the first period. In another aspect, a second period of potential interference during an upcoming LTE reception may be predicted based on an estimated quality of LTE reception. The duration of the transmission may be adjusted so that the transmission does not being during the second period.

Abstract translation: 本公开提供了使用诸如WLAN和LTE之类的多种无线协议的组合无线通信设备的共存策略。 可以识别在一个无线协议的即将到来的通信事件期间具有增加的干扰电位的一个或多个周期，并且可以动态地调整另一无线协议的传输持续时间以减少干扰。 在一个方面，可以基于分配的LTE发送功率预测即将到来的LTE传输期间的潜在干扰的第一周期。 可以调整传输的持续时间，使得在第一周期期间对传输的响应没有到达。 在另一方面，可以基于LTE接收的估计质量来预测即将到来的LTE接收期间的第二时段的潜在干扰。 可以调整传输的持续时间，使得传输不在第二时段期间。

公开(公告)号：US20140219189A1

公开(公告)日：2014-08-07

申请号：US14134528

申请日：2013-12-19

Applicant: QUALCOMM Incorporated

Inventor： Dhananjay Ashok Gore ,  Hemanth Sampath ,  Jibing Wang ,  Tamer Kadous ,  Gwendolyn D. Barriac

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04L1/0016 ,  H04L1/0026 ,  H04L1/0675 ,  H04L5/023 ,  H04L25/0206 ,  H04L27/2602 ,  H04L27/2608

Abstract: Techniques to enhance the performance in a wireless communication system using segments called subbands and using precoding are shown. According to one aspect, the bandwidth for transmission to an access terminal is constrained to a preferred bandwidth which is less than the bandwidth available for transmission to an access terminal and precoding information related to the subcarriers within the constrained bandwidth is provided to a transmitter. The precoding information related to the subcarriers within a constrained bandwidth provides feedback about the forward link channel properties relative to different subbands and may be fed back on a channel associated with the bandwidth.

Abstract translation: 示出了使用称为子带并使用预编码的段来增强在无线通信系统中的性能的技术。 根据一个方面，用于传输到接入终端的带宽被限制到比可用于传输到接入终端的带宽的优选带宽，并且将与受限带宽内的子载波相关的预编码信息提供给发射机。 与受限带宽内的子载波相关的预编码信息提供关于相对于不同子带的前向链路信道属性的反馈，并且可以在与带宽相关联的信道上反馈。