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公开(公告)号:US20210160104A1
公开(公告)日:2021-05-27
申请号:US16636531
申请日:2018-08-10
Applicant: Liangming WU , Yu ZHANG , Chenxi HAO , Hao XU , Wanshi CHEN , QUALCOMM Incorporated
Inventor: Liangming WU , Yu ZHANG , Chenxi HAO , Hao XU , Wanshi CHEN
IPC: H04L25/02 , H04L5/00 , H04B7/0456 , H04W72/04
Abstract: Techniques and apparatus for configuring transmission rank and/or precoder(s) to support uplink non-codebook based transmission are provided. One technique includes receiving sounding reference signal (SRS) resource(s) from a user equipment (UE), where each SRS resource is associated with one or more precoded ports. At least one of a transmission rank or a set of precoders is determined based on the SRS resource(s). An indication of at least one of the SRS resource(s) is signaled to the UE. The UE uses the indication of the at least one of the SRS resource(s) to send an uplink transmission.
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公开(公告)号:US20210036745A1
公开(公告)日:2021-02-04
申请号:US16964519
申请日:2019-01-25
Applicant: Liangming WU , Yu ZHANG , Chao WEI , Qiaoyu LI , Chenxi HAO , Hao XU , QUALCOMM Incorporated
Inventor: Liangming WU , Yu ZHANG , Chao WEI , Qiaoyu LI , Chenxi HAO , Hao XU
IPC: H04B7/0456 , H04B7/06
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, configuration information indicating that the UE is to compress a precoding matrix indicator in connection with channel state information reporting, wherein the precoding matrix indicator is to be compressed based at least in part on a quantization dependency between transmission layers or an orthogonality relationship between the transmission layers, and wherein the configuration information is associated with a type II, higher rank codebook for multiple input multiple output configuration. The UE may transmit, to a base station (BS), the compressed precoding matrix indicator to the base station based at least in part on receiving the configuration information. The UE and BS may use a communication configuration based at least in part on a precoding matrix indicator recovered from the compressed precoding matrix indicator. Numerous other aspects are provided.
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公开(公告)号:US20200304178A1
公开(公告)日:2020-09-24
申请号:US16088285
申请日:2017-05-10
Applicant: QUALCOMM Incorporated
IPC: H04B7/0452 , H04B7/0456 , H04B7/0417 , H04B7/06 , H04L5/00
Abstract: A hybrid class B channel state information (CSI) reference signal (CSI-RS) scheme is discussed which configures one cell-common beamformed CSI-RS resource for beam tracking and another UE-specific beamformed CSI-RS resource for CSI feedback. The cell-common beamformed CSI-RS resource may be transmitted at a longer periodicity and shared by user equipments (UEs) in the cell. The beamforming may be cycled over a set of predefined weights transparent to UE. The UE-specific beamformed CSI-RS may be transmitted at a shorter periodicity and can be activated dynamically to allow resource sharing among multiple UEs. The UEs will report a CSI for the cell-common beamformed CSI-RS resource which provides a quality indicator for the associated cell-common beam and is utilized by the base station to determine the precoding weight for the UE-specific beamformed CSI-RS resource. Both resources can be configured with different parameter sets, such as number of ports, codebook type, and CSI reporting parameters.
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244.
公开(公告)号:US20200295895A1
公开(公告)日:2020-09-17
申请号:US16650056
申请日:2018-09-28
Applicant: QUALCOMM Incorporated
Inventor: Liangming WU , Yu ZHANG , Chenxi HAO , Chao WEI , Wanshi CHEN , Hao XU
Abstract: Certain aspects of the present disclosure relate to methods and apparatus relating to rate matching for new radio (NR) physical downlink shared channel (PDSCH) and physical uplink shared channel (PUSCH). In certain aspects, a method includes receiving a rate matching resource (RMR) configuration from a serving cell. The method also includes identifying one or more first resource elements (REs) to be rate matched around at least in part based on a transmission numerology associated with the RMR configuration, wherein the one or more first REs are used for reference signal (RS) transmission in the serving cell or a neighboring cell. The method further includes mapping a physical downlink shared channel (PDSCH) to one or more second REs not including the first REs.
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公开(公告)号:US20200235796A1
公开(公告)日:2020-07-23
申请号:US16650171
申请日:2018-09-29
Applicant: QUALCOMM Incorporated
Inventor: Liangming WU , Yu ZHANG , Chenxi HAO , Chao WEI , Wanshi CHEN
IPC: H04B7/06 , H04B7/0456 , H04B7/0417
Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for generating and reporting CSI.
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公开(公告)号:US20200067592A1
公开(公告)日:2020-02-27
申请号:US16465477
申请日:2017-01-06
Applicant: Pavan Kumar VITTHALADEVUNI , Yu ZHANG , Joseph Binamira SORIAGA , QUALCOMM Incorporated
Inventor: Pavan Kumar VITTHALADEVUNI , Yu ZHANG , Joseph Binamira SORIAGA
Abstract: Aspects of the present disclosure describe receiving, from an access point, an indication of at least one of a beamforming method for beamforming a RS or a normalization method for normalizing power for beamforming the RS. A channel covariance matrix corresponding to interference over a plurality of antenna ports can be generated, as well as a RS beamforming matrix based at least in part on modifying the channel covariance matrix and on the normalization method. The RS can be generated based on the RS beamforming matrix and the beamforming method. The RS can be transmitted to the access point based on the RS beamforming matrix.
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公开(公告)号:US20200052750A1
公开(公告)日:2020-02-13
申请号:US16557776
申请日:2019-08-30
Applicant: QUALCOMM Incorporated
Inventor: Alexandros MANOLAKOS , Yu ZHANG , Jing JIANG , June NAMGOONG , Wanshi CHEN , Tingfang JI
IPC: H04B7/0456 , H04L5/00 , H04B7/0413
Abstract: Aspects of the disclosure relate to a transmitting device, which may explicitly or implicitly signal the use of continuous precoding for a resource block (RB) cluster. For example, the transmitting device may implicitly indicate that continuous precoding is applied to an RB cluster by dynamically controlling one or more parameters of a transmission over those RBs. Further, when continuous precoding is applied to an RB cluster, the transmitting device may explicitly or implicitly signal the dynamic control over one or more transmission properties, with an aim to maximize the benefits of such continuous precoding. Other aspects, embodiments, and features are also claimed and described.
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公开(公告)号:US20190320419A1
公开(公告)日:2019-10-17
申请号:US16341836
申请日:2017-11-10
Applicant: Jay Kumar SUNDARARAJAN , Alexandros MANOLAKOS , Wanshi CHEN , Yu ZHANG , Haitong SUN , QUALCOMM Incorporated
Inventor: Jay Kumar SUNDARARAJAN , Alexandros MANOLAKOS , Wanshi CHEN , Yu ZHANG , Haitong SUN
Abstract: Certain aspects of the present disclosure provide techniques for indicating a purpose for a reference signal. According to certain aspects, a method of wireless communication by a user equipment (UE) is provided. The method generally includes receiving an indication of a purpose of a reference signal (RS) from a base station (BS) and processing the RS in accordance with the indicated purpose.
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249.
公开(公告)号:US20190182697A1
公开(公告)日:2019-06-13
申请号:US16324766
申请日:2017-03-01
Applicant: QUALCOMM INCORPORATED
Inventor: Yu ZHANG , Chao WEI , Wanshi CHEN , Peter GAAL
IPC: H04W24/10 , H04L5/00 , H04B7/0456 , H04W16/28
Abstract: Certain aspects of the present disclosure provide techniques for dynamic multi-beam transmission for new radio eNB UE (NR) technology multiple-input multiple-output (MIMO) communications. A user equipment (UE) may measure beamformed channel state information reference signals (CSI-RSs) from one or more transmit and receive points (TRPs) and report rank information and/or channel quality information for beams associated with the various beamformed CSI-RSs.
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公开(公告)号:US20180352533A1
公开(公告)日:2018-12-06
申请号:US16044453
申请日:2018-07-24
Applicant: QUALCOMM Incorporated
Inventor: Muhammad Nazmul ISLAM , Sundar SUBRAMANIAN , Tingfang JI , Yu ZHANG , Navid ABEDINI , Bilal SADIQ , Ashwin SAMPATH
CPC classification number: H04W64/006 , H04B7/024 , H04B7/0617 , H04B7/063 , H04L5/0035 , H04L5/0091 , H04W72/0413 , H04W72/042 , H04W88/02 , H04W88/08
Abstract: Antenna ports on wireless devices may be QCL. QCL antenna ports may be useful in improving channel statistics related to the antenna ports. UEs and base stations may be able to determine candidate QCL ports, transmit information identifying the candidate QCL ports, and receive feedback indicating whether the candidate QCL ports are QCL at the receiving device such as a UE or a base station.
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