公开(公告)号：US20200007302A1

公开(公告)日：2020-01-02

申请号：US16488150

申请日：2018-03-29

Applicant: Alexan-dros MANOLAKOS ,  Chong LI ,  Jing JIANG ,  Yu ZHANG ,  Joseph Binamira SORIAGA ,  Wanshi CHEN ,  Tingfang JI ,  QUALCOMM Incorporated

Inventor： Alexandros MANOLAKOS ,  Chong LI ,  Jing JIANG ,  Yu ZHANG ,  Joseph Binamira SORIAGA ,  Wanshi CHEN ,  Tingfang JI

IPC: H04L5/02 ,  H04L5/00

Abstract: Various aspects are described for schemes that address the potential puncturing of important reference signals (RSs) for enhanced mobile broadband (eMBB) applications, such as demodulation reference signal (DMRS), channel state information reference signal (CSIRS), tracking reference signal, and general reference signal. The schemes can be used for recovery of eMBB's RS puncturing from dynamic multiplexing of ultra-reliable-low-latency communications (URLLC) and eMBB. The schemes include a block-based scheme and an over-provisioning scheme. The schemes modify an existing RS pattern before puncturing occurs in response to a presence of the URLLC traffic. In addition, there can be an option not to use (e.g., disable) time-domain orthogonal cover code (TD-OCC) for the RSs.

公开(公告)号：US20190342042A1

公开(公告)日：2019-11-07

申请号：US16466697

申请日：2017-12-02

Applicant: QUALCOMM INCORPORATED

Inventor： Yu ZHANG ,  Alexandros MANOLAKOS ,  Tao LUO ,  June NAMGOONG

IPC: H04L5/00 ,  H04L1/18

Abstract: Certain aspects of the present disclosure provide techniques for transmitting and processing channel state information (CSI) reference signals (CSI-RS). An exemplary method includes determining a configuration of channel state information reference signals (CSI-RSs), wherein the configuration indicates a set of resource elements (REs) to be used for CSI-RSs and a first mapping of CSI-RS ports to the set of REs; sending an indication of the configuration of the CSI-RSs; and transmitting the CSI-RSs according to the determined configuration.

公开(公告)号：US20190190581A1

公开(公告)日：2019-06-20

申请号：US16324710

申请日：2017-08-11

Applicant: QUALCOMM INCORPORATED

Inventor： Yu ZHANG ,  Chao WEI ,  Jilei HOU

IPC: H04B7/06 ,  H04L1/00

CPC classification number: H04B7/0626 ,  H04B7/06 ,  H04B7/0641 ,  H04B7/0695 ,  H04L1/00 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/06

Abstract: Certain aspects of the present disclosure provide techniques for channel state information acquisition in wireless communication systems operating according to new radio (NR) technologies. An exemplary method that may be performed by a user equipment (UE) generally includes receiving a first beamformed channel state information reference signal (CSI-RS), determining, based on the first beamformed CSI-RS and the beacon reference signal, information regarding an adjustment, preferred by the UE, of a beam-former to be used for a forthcoming second beamformed CSI-RS, transmitting a beamformer adjustment indicator (BAI), periodically, semi-persistently, or aperiodically, that indicates the preferred adjustment, and reporting channel state information feedback (CSF), based on the first beamformed CSI-RS.

公开(公告)号：US20190081676A1

公开(公告)日：2019-03-14

申请号：US15765575

申请日：2016-09-28

Applicant: QUALCOMM Incorporated

Inventor： Chao WEI ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/08 ,  H04L1/00

Abstract: Channel state information (CSI) operations are disclosed with regard to elevation beamforming (EB)/full dimension (FD) multiple input, multiple output (ED/FD-MIMO) operations. With CSI processing associated with multiple CSI-reference signal (CSI-RS) resources, ambiguities may arise in determining the CSI reporting type and rank. CSI reporting type may be determined using a last reported beam selection indicator (BI) or, in the absence of a BI, may be determined according to a predefined rule. When rank and BI are reported separately and rank is absent, user equipment may determine a default reference rank for CSI reporting based on either or both of previously reported rank or BI. When rank and BI are jointly reported, encoding schemes with fixed bitwidths determined based on either CSI-RS processes or resources may be used to enhance decoding. CSI-RS antenna ports, processes, or resources may also be used in determining application of CSI processing relaxation.

公开(公告)号：US20180351621A1

公开(公告)日：2018-12-06

申请号：US15780451

申请日：2016-01-07

Applicant: Chao WEI ,  Wanshi CHEN ,  Peter GAAL ,  Yu ZHANG ,  QUALCOMM Incorporated

Inventor： Chao WEI ,  Wanshi CHEN ,  Peter GAAL ,  Yu ZHANG

IPC: H04B7/06 ,  H04B7/0456 ,  H04L5/00 ,  H04W24/10

CPC classification number: H04L5/0057 ,  H04B7/0478 ,  H04B7/06 ,  H04B7/0639 ,  H04L5/0023 ,  H04W72/082

Abstract: 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.

公开(公告)号：US20250168626A1

公开(公告)日：2025-05-22

申请号：US18835161

申请日：2022-05-07

Applicant: QUALCOMM Incorporated

Inventor： Danlu ZHANG ,  Wei XI ,  Yu ZHANG ,  Chao WEI ,  Min HUANG ,  Hao XU ,  Giridhar Dhati MANDYAM ,  Patrick HUGHES

IPC: H04W12/037 ,  H04B7/04 ,  H04B7/0413

Abstract: Various embodiments may provide communication security at a physical layer. In some embodiments, a first wireless device at a first location may transmit to a second wireless device at a second location different portions of a message via two or more different spatially separated signal paths in a manner that enables the second wireless device to receive the complete message but prevents reception of the complete message by a third wireless device at a third location different from the second location. The second wireless device may receive different portions of the message via the two or more different spatially separated signal paths, may assemble the message from the received different portions of the message.

公开(公告)号：US20250158789A1

公开(公告)日：2025-05-15

申请号：US18838337

申请日：2022-04-06

Applicant: QUALCOMM Incorporated

Inventor： Zhikun WU ,  Yuchul KIM ,  Ahmed ELSHAFIE ,  Huilin XU ,  Yu ZHANG ,  Kianoush HOSSEINI ,  Linhai HE

IPC: H04L5/00 ,  H04W52/14 ,  H04W52/46

Abstract: Methods, systems, and devices for wireless communications are described. An active wireless device, such as a user equipment (UE), a network entity, or both, may receive or otherwise determine a resource allocation for communication with a passive device. The active device may select one or more parameters of a waveform transmission (e.g., a transmission power, duration, or both) for activating the passive device while accounting for a time gap between resources. In some cases, a network entity may configure a list of parameters including the one or more parameters via control signaling. The active device may transmit the waveform transmission to the passive device in accordance with the one or more parameters, which may activate the passive device.

公开(公告)号：US20250097680A1

公开(公告)日：2025-03-20

申请号：US18468920

申请日：2023-09-18

Applicant: QUALCOMM Incorporated

Inventor： Hyojin LEE ,  Weimin DUAN ,  Yu ZHANG

IPC: H04W4/80 ,  G01S5/00 ,  G01S5/08 ,  H04W24/10

Abstract: Disclosed are techniques for wireless sensing. In an aspect, a transmitter device transmits, to at least one receiver device, one or more reference signals on each of a plurality of transmit beams, wherein the plurality of transmit beams corresponds to a plurality of codepoints of a near-field codebook, and wherein each of the plurality of codepoints is parameterized with an angle value and a range value of a corresponding transmit beam of the plurality of transmit beams.

公开(公告)号：US20250088889A1

公开(公告)日：2025-03-13

申请号：US18773040

申请日：2024-07-15

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Liangming WU ,  Chenxi HAO ,  Yu ZHANG ,  Chao WEI ,  Min HUANG ,  Wanshi CHEN

IPC: H04W24/10 ,  H04L5/00

Abstract: Aspects of the present disclosure relate to wireless communication. In some aspects, a user equipment may determine at least one of: a first number of coefficients to be included in a first set of coefficients in a transfer domain that characterize compressed channel state information (CSI) for a first layer, or a first quantization scheme to be used to interpret the first set of coefficients. The UE may determine at least one of: a second number of coefficients to be included in a second set of coefficients in the transfer domain that characterize the compressed CSI for a second layer, or a second quantization scheme to be used to interpret the second set of coefficients. The UE may transmit a report that identifies the first set of coefficients and the second set of coefficients based at least in part on the determination(s). Other aspects are provided.

公开(公告)号：US20250030469A1

公开(公告)日：2025-01-23

申请号：US18708449

申请日：2022-01-10

Applicant: QUALCOMM Incorporated

Inventor： Ahmed ELSHAFIE ,  Runxin WANG ,  Yu ZHANG ,  Hwan Joon KWON

IPC: H04B7/06 ,  H04W72/1273

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a plurality of downlink transmissions from a base station. The UE may identify a channel state information (CSI) trigger event. The UE may transmit an accumulated CSI report comprising CSI for each downlink transmission of the plurality of downlink transmissions in accordance with the CSI trigger event, wherein a quantization level of the CSI for each downlink transmission in the accumulated CSI report is based at least in part on a time between the downlink transmission and the CSI trigger event.