利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

283 条记录 (耗时 0.031 秒)

    UE specific beamforming for narrowband communications
    1.
    发明授权
    UE specific beamforming for narrowband communications 有权

    公开(公告)号：US11595176B2

    公开(公告)日：2023-02-28

    申请号：US17051190

    申请日：2019-05-15

    申请人： QUALCOMM INCORPORATED ,  Chao Wei ,  Alberto Rico Alvarino ,  Wanshi Chen ,  Le Liu

    发明人： Chao Wei ,  Alberto Rico Alvarino ,  Wanshi Chen ,  Le Liu

    IPC分类号： H04L5/00 ,  H04B7/06 ,  H04W72/04 ,  H04W88/02 ,  H04B7/0413

    摘要： Methods, systems, and devices for wireless communications are described in which beamforming may be configured at a user equipment (UE) for narrowband communications. The UE may be a narrowband UE that may provide an indication to a base station that the UE is capable of performing beamforming communication for a unicast channel transmission. Such an indication may be provided in response to the UE receiving a non-beamformed broadcast channel transmission from the base station via a first carrier. The base station may receive the indication and configure the UE with a beamformed narrowband communications scheme. Such a beamformed formed narrowband communications scheme may be used for narrowband downlink shared channel communications, narrowband downlink control channel communications, or combinations thereof. In some cases, beamformed communications may be configured on a different carrier than the first carrier. The base station and UE may then communicate using beamformed transmissions.

    Signaling for interlaced FDM uplink DMRS
    4.
    发明授权
    Signaling for interlaced FDM uplink DMRS 有权

    公开(公告)号：US11258564B2

    公开(公告)日：2022-02-22

    申请号：US16313806

    申请日：2017-05-11

    申请人： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  QUALCOMM Incorporated

    发明人： Chao Wei ,  Wanshi Chen ,  Peter Gaal

    IPC分类号： H04L5/00

    摘要： Signaling design for interlaced frequency divisional multiplex (IFDM) demodulation reference signals (DMRS) is discussed in which a dynamic indication is provided to a user equipment (UE) from a serving base station that allows the UE to configure transmission of DMRS according to either a single carrier frequency divisional multiplex (SC-FDM) or IFDM configurations, as indicated by the dynamic indication. The IFDM configuration may be applicable to either regular uplink subframes or within the uplink portion of special subframes. In some aspects, power boosting may be provided for the DMRS in order to equalize transmit power between decimated DMRS transmitted with the data tones. Additional aspects may also provide for different offsets to be used depending on the type of uplink control signal transmitted.

    Enhanced CSI feedback for FD-MIMO
    5.
    发明授权
    Enhanced CSI feedback for FD-MIMO 有权

    公开(公告)号：US11121752B2

    公开(公告)日：2021-09-14

    申请号：US15780451

    申请日：2016-01-07

    申请人： QUALCOMM Incorporated ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

    发明人： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

    IPC分类号： H04B7/06 ,  H04L5/00 ,  H04W24/10 ,  H04B7/0456 ,  H04W72/08

    摘要： Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a CSI process is defined that may be used to identify an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.

    Enhanced CSI feedback for FD-MIMO
    6.
    发明授权
    Enhanced CSI feedback for FD-MIMO 有权

    公开(公告)号：US10826577B2

    公开(公告)日：2020-11-03

    申请号：US15531131

    申请日：2015-01-19

    申请人： QUALCOMM Incorporated ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

    发明人： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

    IPC分类号： H04B7/0456 ,  H04B7/06 ,  H04B7/17 ,  H04B7/26

    摘要： Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a single CSI process is defined that is configured with an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.

    REPORTING APERIODIC CSI VIA PUCCH
    9.
    发明申请
    REPORTING APERIODIC CSI VIA PUCCH 审中-公开

    公开(公告)号：US20200178240A1

    公开(公告)日：2020-06-04

    申请号：US16615534

    申请日：2018-06-15

    申请人： Yu ZHANG ,  Chao WEI ,  Liangming WU ,  Wanshi CHEN ,  QUALCOMM Incorporated

    发明人： Yu Zhang ,  Chao Wei ,  Liangming Wu ,  Wanshi Chen

    IPC分类号： H04W72/04 ,  H04L5/00

    摘要： Reporting aperiodic channel state information (A-CSI) via a physical uplink control channel (PUCCH) is disclosed. A UE receives a configuration to report aperiodic channel state information (A-CSI) using physical uplink control channel (PUCCH). The UE can report lightweight A-CSI via short/long PUCCH or may report heavy A-CSI via short/long PUCCH. The UE receives a trigger signal for PUCCH-based A-CSI reporting either by a dedicated downlink grant or by a group common DCI. When triggered via a DCI-based trigger, the PUCCH resource can be either a resource used for HARQ-ACK feedback, e.g., short PUCCH; or a semi-static configured PUCCH resource, e.g., either short PUCCH or long PUCCH. When triggered via a group common DCI-based trigger, the PUCCH resource can be either semi-statically configured, or dynamically indicated.

    COLLISION HANDLING MECHANISMS FOR DYNAMIC TDD SYSTEMS
    10.
    发明申请
    COLLISION HANDLING MECHANISMS FOR DYNAMIC TDD SYSTEMS 审中-公开

    公开(公告)号：US20200169364A1

    公开(公告)日：2020-05-28

    申请号：US16608328

    申请日：2018-06-08

    申请人： Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Chao WEI ,  Wanshi CHEN ,  Qualcomm Incorporated

    发明人： Chenxi Hao ,  Yu Zhang ,  Liangming Wu ,  Chao Wei ,  Wanshi Chen

    IPC分类号： H04L5/00 ,  H04B7/06 ,  H04W72/14 ,  H04W24/10 ,  H04W72/04 ,  H04L5/14

    摘要： Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for communicating an uplink grant and a channel state information reference signal (CSI-RS) trigger. A wireless device may identify e a pending collision for a slot of a carrier between a CSI-RS and uplink data. The wireless device may determine a communication configuration for the CSI-RS and the uplink data such that no collision occurs. The determined communication configuration for the CSI-RS may include delaying one of the colliding signals, transmitting only one of the colliding signals and suppressing the other, or reconfiguring the slot such that both signals can be transmitted successfully. Additionally, the UE and the base station may determine a CSI reporting configuration based on the determined communication configuration.