公开(公告)号：US20200169364A1

公开(公告)日：2020-05-28

申请号：US16608328

申请日：2018-06-08

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

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

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

Abstract: 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.

公开(公告)号：US10602504B2

公开(公告)日：2020-03-24

申请号：US16017749

申请日：2018-06-25

Applicant: QUALCOMM INCORPORATED

Inventor： Wanshi Chen ,  Chao Wei ,  Neng Wang ,  Hao Xu ,  Peter Gaal

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04L29/06 ,  H04W74/08 ,  H04W36/00 ,  H04W12/00 ,  H04L1/00 ,  H04W24/00 ,  H04W48/00 ,  H04B17/345 ,  H04B7/0413 ,  H04B7/06 ,  H04W24/10 ,  H04W28/06

Abstract: Certain aspects of the present disclosure relate to techniques and methods for reporting channel state information (CSI) feedback, for example, for UEs capable of supporting evolved interference management traffic adaptation (eIMTA). An exemplary method generally includes receiving signaling of a first uplink/downlink (UL/DL) subframe configuration for communicating with a base station (BS), receiving signaling of at least one channel state information (CSI) reporting configuration indicating at least two subframe sets, where each subframe set is associated with an interference measurement resource (IMR) configuration, detecting a collision of CSI reporting for the at least two subframe sets in an uplink subframe, prioritizing one subframe set from the at least two subframe sets for CSI reporting in the uplink subframe, and reporting CSI in the uplink subframe based on the prioritization.

公开(公告)号：US20200092070A1

公开(公告)日：2020-03-19

申请号：US16615562

申请日：2018-06-12

Applicant: Liangming WU ,  Wanshi CHEN ,  Yu ZHANG ,  Chao WEI ,  Chenxi HAO ,  QUALCOMM Incorporated

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

IPC: H04L5/00

Abstract: A signaling design for multiple aperiodic channel state information (M-A-CSI) feedback is disclosed. In new radio (NR) networks, there may be scenarios where M-A-CSI are triggered and reported simultaneously. Timing issues may arise because of the different delay periods for difference CSI processes and reporting. In a first aspect, a general set of delay times for the M-A-CSI maybe signaled to the user equipment (UE) from which a candidate set is selected by the UE based on various CSI related settings. An indication from the base station may then be used to select the delay from the candidate set. In a second aspect, a delay period may be selected from the set of delays associated with and corresponding to the M-A-CSI.

公开(公告)号：US20200007293A1

公开(公告)日：2020-01-02

申请号：US16313806

申请日：2017-05-11

Applicant: Chao WEI ,  Wansh CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

Inventor： Chao Wei ,  Wanshi CHEN ,  Peter GAAL

IPC: H04L5/00

Abstract: 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.

公开(公告)号：US20200007160A1

公开(公告)日：2020-01-02

申请号：US16487242

申请日：2017-03-23

Applicant: QUALCOMM Incorporated

Inventor： Jian Li ,  Changlong Xu ,  Chao Wei ,  Jilei Hou ,  Jing Jiang

IPC: H03M13/13 ,  H04L1/00 ,  H03M13/09 ,  H03M13/29 ,  H03M13/00

Abstract: Methods, systems, and devices for wireless communication are described that support channel selection for parity bits in polar coding techniques. In some cases, an encoder or decoder of a wireless device may assign information bits, frozen bits, and parity check bits to polar channels of an encoder or decoder based on reliability metrics. The information bits may initially be assigned and based on a channel index of the first information bit, the parity check bits may be assigned to channels having higher channel indices than the first information bit. After assignment, the bits may be encoded or decoded.

公开(公告)号：US10299275B2

公开(公告)日：2019-05-21

申请号：US14773869

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Jilei Hou ,  Neng Wang ,  Chao Wei

IPC: H04W72/04 ,  H04W74/08 ,  H04B7/06

Abstract: A method for improved random access procedures by a UE is provided. The method comprises: measuring a common CSI-RS; selecting a best horizontal/vertical beam from a set of fixed beams; determining a preamble mapped to the selected horizontal/vertical beam; transmitting the preamble; and receiving a random access response.

公开(公告)号：US10224966B2

公开(公告)日：2019-03-05

申请号：US15851303

申请日：2017-12-21

Applicant: QUALCOMM Incorporated

Inventor： Jian Li ,  Changlong Xu ,  Chao Wei ,  Jilei Hou ,  Jing Jiang

IPC: G06F11/10 ,  H03M13/29 ,  H03M13/00 ,  H03M13/15

Abstract: Methods, systems, and devices for wireless communication are described that support channel selection for parity bits in polar coding techniques. In some cases, an encoder or decoder of a wireless device may assign information bits, frozen bits, and parity check bits to polar channels of an encoder or decoder based on reliability metrics. The information bits may initially be assigned and based on a channel index of the first information bit, the parity check bits may be assigned to channels having higher channel indices than the first information bit. After assignment, the bits may be encoded or decoded.

公开(公告)号：US10045339B2

公开(公告)日：2018-08-07

申请号：US14910567

申请日：2014-07-17

Applicant: QUALCOMM INCORPORATED ,  Chao Wei ,  Wanshi Chen ,  Xiaoxia Zhang ,  Neng Wang ,  Hao Xu ,  Peter Gaal

Inventor： Chao Wei ,  Wanshi Chen ,  Xiaoxia Zhang ,  Neng Wang ,  Hao Xu ,  Peter Gaal

IPC: H04W72/04 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W52/04

CPC classification number: H04W72/0446 ,  H04L1/0073 ,  H04L1/1812 ,  H04L1/1854 ,  H04L1/1861 ,  H04L5/0055 ,  H04W52/04 ,  H04W72/04 ,  H04W72/0406

Abstract: Aspects of the present disclosure relate to techniques that may help enable the determination of uplink resource allocation in systems that support dynamic uplink-downlink subframe configurations. An example method generally includes receiving signaling indicating a dynamic uplink-downlink (UL-DL) subframe configuration, determining hybrid automatic repeat request (HARQ) acknowledgment/negative acknowledgment (ACK/NACK) timing based on a reference UL-DL subframe configuration, and determining HARQ resource allocation based on the dynamic UL-DL subframe configuration.

公开(公告)号：US20180103387A1

公开(公告)日：2018-04-12

申请号：US15831056

申请日：2017-12-04

Applicant: QUALCOMM Incorporated

Inventor： Peng Cheng ,  Neng Wang ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Jilei Hou

IPC: H04W24/10 ,  H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04W76/04 ,  H04L29/08 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W24/10 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0057 ,  H04L5/14 ,  H04L5/1469 ,  H04L29/08018 ,  H04L69/323 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices are described for providing periodic CSI reports and/or aperiodic CSI reports to provide CSI for both anchor and non-anchor TDD subframes in eIMTA. Periodic CSI reports may be provided based on a reference configuration, and aperiodic CSI reports may be provided based on a time of reception of a CSI request and a reference configuration. A UE may determine to report anchor or non-anchor CSI through explicit or implicit signaling. Aperiodic CSI may be used for transmission of anchor subframe CSI reports and periodic CSI may be used for transmission of non-anchor subframe CSI reports, or aperiodic CSI may be used for transmission of non-anchor subframe CSI reports and periodic CSI may be used for transmission of anchor subframe CSI reports. A determination of the reference subframe for aperiodic CSI estimation may be based on a time of receipt of an aperiodic CSI request.

公开(公告)号：US20180083676A1

公开(公告)日：2018-03-22

申请号：US15563357

申请日：2015-06-03

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

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

IPC: H04B7/04 ,  H04B7/0452

CPC classification number: H04B7/0478 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/0031

Abstract: Enhanced channel state information (CSI) procedures for full dimension-multiple input, multiple output (FD-MIMO) is discussed in which a number of CSI reference signal (CSI-RS) ports configured for a user equipment (UE) is determined. In response to the CSI-RS ports including both horizontal and vertical ports, the UE may determine a first precoding matrix from a plurality of precoding matrices constructed by a Kronecker product of a horizontal precoding matrix and a vertical precoding matrix. The UE selects a predetermined number of precoding vectors out of the first precoding matrix and generates a wideband precoding matrix, based on the selected predetermined number of precoding vectors. The UE reports one or more CSI reports, wherein the CSI reports includes at least one precoding matrix indicator (PMI) for the first precoding matrix and at least an indication of the selection of the predetermined number of precoding vectors.