公开(公告)号：US20230239867A1

公开(公告)日：2023-07-27

申请号：US17999927

申请日：2021-05-26

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Changlong XU ,  Jian LI ,  Kangqi LIU ,  Xipeng ZHU ,  Hao XU

IPC: H04W72/1268 ,  H04L5/00

CPC classification number: H04W72/1268 ,  H04L5/0055

Abstract: Certain aspects of the present disclosure provide techniques for cross layer improvement with radio link control feedback on physical layer. In aspects, a method performed by a user equipment (UE) includes receiving a radio link control (RLC) packet; and transmitting, in response to the RLC packet, an RLC acknowledgment (ACK) or an RLC negative acknowledgment (NACK) on a pre-configured uplink resource associated with the RLC packet.

公开(公告)号：US20230163911A1

公开(公告)日：2023-05-25

申请号：US17754719

申请日：2020-10-10

Applicant: QUALCOMM Incorporated

Inventor： Chenxi HAO ,  Liangming WU ,  Yu ZHANG ,  Chao WEI ,  Hao XU ,  Wanshi CHEN

IPC: H04L5/00 ,  H04B7/06

CPC classification number: H04L5/0051 ,  H04B7/0639 ,  H04B7/0626

Abstract: Certain aspects of the present disclosure provide techniques for port selection for channel state feedback with analog feedforward. A method that may be performed by a user equipment (UE) includes selecting one or more channel state information reference signals (CSI-RS) ports, of a plurality of CSI-RS ports, for the UE to report CSI. The port selection includes selecting any of the plurality of CSI-RS ports for selecting CSI-RS based on a grouping of the plurality of CSI-RS ports. The UE determines a precoding matrix indicator (PMI) formed by a linear combination of the one or more selected CSI-RS ports. The UE computes at least wideband linear combination coefficients for the selected CSI-RS ports. The UE provides the selected one or more CSI-RS ports and the computed wideband linear combination coefficients to a base station (BS) in a CSI report.

公开(公告)号：US20220376856A1

公开(公告)日：2022-11-24

申请号：US17607509

申请日：2020-05-29

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W24/08 ,  H04L5/16

Abstract: Certain aspects of the present disclosure provide techniques for downlink and/or uplink beam management for full-duplex communications. An example method generally includes receiving, from a wireless node, a RS resource configuration indicating interference RS resources associated with interference reference signal transmissions; monitoring interference RSs via the interference RS resources; for each of the interference RS resources, determining a reception beam based at least in part on the monitored more interference RSs corresponding to the interference RS resources; receiving control signaling, from the second wireless node, indicating QCL information, which also indicates to either refrain from using any monitored interference RS resource in determining spatial reception parameters or identify at least one monitored interference RS resource to use in determining the spatial reception parameters; and determining the spatial reception parameters in accordance with the control signaling.

公开(公告)号：US20220304014A1

公开(公告)日：2022-09-22

申请号：US17596065

申请日：2019-06-28

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Chao WEI ,  Chenxi HAO ,  Liangming WU ,  Yu ZHANG ,  Yuwei REN ,  Changlong XU ,  Min HUANG ,  Hao XU ,  Wanshi CHEN

IPC: H04W72/12 ,  H04W72/04

Abstract: Aspects are provided which allow a user equipment (UE) to identify a low-bandwidth (low-BW) CORESET-0 and associated CSS based on reception bandwidth of the UE. The base station may configure different frequency and time-domain resources of the low-BW CORESET in order to optimize resource utilization of the low-BW CORESET-0, and the low-tier UE may identify these resources of CORESET-0 and CSS from the system configuration information received in a master information block (MIB). As a result, low tier UEs may operate in a same cell as legacy UEs without the need for the base station to transmit additional signaling to either legacy UEs or lower tier UEs for the UEs to receive their respective CORESET-0's and identify a physical downlink channel (PDCCH).

公开(公告)号：US20220190957A1

公开(公告)日：2022-06-16

申请号：US17593902

申请日：2019-04-15

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Changlong XU ,  Jian LI ,  Jing JIANG ,  Wei YANG ,  Ying WANG

IPC: H04L1/00

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for adjusting a number of encoded bits, M, in block puncturing and/or shortening calculations to improve encoding performance. An exemplary method that may be performed by a wireless device generally includes iteratively determining a parameter, Madj, for construction of a polar code of size N for use in encoding K information bits, based on: at least two parameters, α and β, related to how many iterations to use in determining Madj, and a number of encoded bits, M; performing information adjustment allocation of the K information bits to an upper part and a lower part of the polar code based on Madj; and transmitting the upper part and the lower part of the polar code via a wireless medium.

公开(公告)号：US20220174680A1

公开(公告)日：2022-06-02

申请号：US17593823

申请日：2020-04-21

Applicant: QUALCOMM Incorporated

Inventor： Chenxi HAO ,  Yu ZHANG ,  Chao WEI ,  Qiaoyu LI ,  Liangming WU

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

Abstract: Certain aspects of the present disclosure provide techniques for channel state information (CSI) reporting with frequency domain (FD) compression. A method that can be performed by a user equipment (UE) includes determining the size of the intermediate set based on one or more parameters included in the CSI report configuration, determining one or more FD bases for each layer based on the intermediate set, wherein the one or more FD bases are characterized by an M value indicative of a number of the one or more FD bases and based on the CSI report configuration, and reporting the one or more FD bases for each layer based on the size of the intermediate set.

公开(公告)号：US20220109480A1

公开(公告)日：2022-04-07

申请号：US17310748

申请日：2020-02-22

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

Inventor： Chenxi HAO ,  Chao WEI ,  Yu ZHANG ,  Liangming WU

IPC: H04B7/06 ,  H04B7/0417

Abstract: Certain aspects of the present disclosure provide techniques for channel state information (CSI) reporting with frequency compression. A method that can be performed by a user equipment (UE) includes receiving a CSI report configuration. The CSI report configuration configures the UE for reporting precoding matrix information including, for each layer, a plurality of selected beams L, a plurality of frequency domain compression bases F for the L beams, and a subset of linear combination coefficients associated with the frequency domain compression bases and beams. The UE can determine a number of coefficients to report for a higher rank based on a configured maximum number of coefficients to report for a lower rank.

公开(公告)号：US20220085855A1

公开(公告)日：2022-03-17

申请号：US17425018

申请日：2020-01-22

Applicant: Min HUANG ,  Chenxi HAO ,  Yu ZHANG ,  Chao WEI ,  Liangming WU ,  Qiaoyu LI ,  QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04B7/0417

Abstract: Certain aspects of the present disclosure provide techniques for precoder matrix quantization for compressed channel state information (CSI) feedback. A method for wireless communications by a user equipment (UE) (120a) includes receiving a CSI report configuration for frequency domain compressed precoder matrix feedback. The CSI report configuration configures the UE (120a) to report, for a plurality of selected beams at a plurality of time domain taps, a frequency domain compression basis vector and a plurality of linear combination coefficients associated with the frequency domain compression (805). For each of the beams, the UE (120a) groups the time domain taps into at least first and second groups. The groups each can have zero, one, or more than one time domain taps (810). The UE (120a) quantizes the corresponding linear combination coefficients and/or frequency domain compression basis vectors based on the grouping (815).

公开(公告)号：US20210368496A1

公开(公告)日：2021-11-25

申请号：US17275573

申请日：2019-09-19

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Yu ZHANG ,  Chenxi HAO ,  Liangming WU ,  Hao XU ,  Wanshi CHEN

IPC: H04W72/04 ,  H04L5/00

Abstract: Certain aspects of the present disclosure provide techniques for scheduling hybrid automatic repeat request (HARQ) feedback and controlling the transmit power of the HARQ feedback. An example method generally includes generating a configuration for physical uplink control channel (PUCCH) resource sets assigned to at least one user equipment (UE), wherein each of the PUCCH resources sets comprises PUCCH resources, transmitting the configuration for the PUCCH resource sets to the at least one UE, generating an uplink control reporting indication indicating the PUCCH resources associated with downlink demodulation reference signal (DMRS) port groups, transmitting the uplink control reporting indication, to the at least one UE, for use in reporting uplink control information (UCI), and receiving at least a part of the UCI associated with at least one of the downlink DMRS port groups from the at least one UE via the PUCCH resources indicated in the uplink control reporting indication.

公开(公告)号：US20210328718A1

公开(公告)日：2021-10-21

申请号：US17271746

申请日：2019-10-03

Applicant: Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jian LI ,  Hao XU ,  Qualcomm Incorporated

Inventor： Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jian LI ,  Hao XU

IPC: H04L1/00 ,  H03M13/00 ,  H03M13/13 ,  H04L1/18

Abstract: Wireless devices may use polar codes for encoding transmissions and may support combining transmissions to improve decoding reliability (e.g., by achieving chase combining and incremental redundancy (IR) gains). For example, an encoding device may puncture a set of mother code bits using different puncturing patterns to obtain different redundancy versions for a first transmission and a re-transmission. Each puncturing pattern may correspond to an equivalent decoding performance. In some cases, to obtain equivalent puncture sets, the encoding device may perform punctured index manipulation procedures on an initial puncturing pattern. A punctured index manipulation procedure may involve switching a binary state for a binary bit at a same binary bit index for each puncture index in a puncturing pattern. A device may receive the transmissions generated using the equivalent puncture sets and may combine the information for improved decoding reliability.