公开(公告)号：US12057937B2

公开(公告)日：2024-08-06

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

CPC classification number: H04L1/0057 ,  H04L1/005

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：US12052031B2

公开(公告)日：2024-07-30

申请号：US16494621

申请日：2018-01-11

Applicant: Qualcomm Incorporated

Inventor： Changlong Xu ,  Jian Li ,  Liangming Wu ,  Joseph Binamira Soriaga ,  Jilei Hou

IPC: H03M13/09 ,  H03M13/00 ,  H03M13/13 ,  H03M13/29 ,  H03M13/35 ,  H03M13/37 ,  H04L1/00 ,  H04W72/21

CPC classification number: H03M13/09 ,  H03M13/13 ,  H03M13/2927 ,  H03M13/616 ,  H04L1/0061 ,  H04L1/0072 ,  H04W72/21

Abstract: Methods, systems, and devices for wireless communication are described. A transmitter may generate a first segmentation based on a first subset of control information and a second segmentation based on jointly encoding the first subset and a second subset of the control information. The transmitter may polar encode the first segmentation to generate a first codeword and the second segmentation to generate a second codeword, and transmit the first and second codewords. A receiver may determine a first bit sequence corresponding to the first subset based on decoding a first codeword and determine an error detection code (EDC) and a second bit sequence corresponding to the second subset based on decoding a second codeword. The receiver may perform error detection on the first and second bit sequences based on the determined EDC, and output the first bit sequence and the second bit sequence or a decoding error.

公开(公告)号：US12047995B2

公开(公告)日：2024-07-23

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: H04W72/04 ,  H04W72/0453 ,  H04W72/23 ,  H04W72/542 ,  H04W72/563

CPC classification number: H04W72/563 ,  H04W72/0453 ,  H04W72/23 ,  H04W72/542

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：US12047989B2

公开(公告)日：2024-07-23

申请号：US17309580

申请日：2020-01-09

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Chenxi Hao ,  Liangming Wu ,  Qiaoyu Li ,  Min Huang

IPC: H04W72/542 ,  H04B7/0417 ,  H04B7/0456 ,  H04W72/21

CPC classification number: H04W72/542 ,  H04B7/0417 ,  H04B7/0486 ,  H04W72/21

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may perform channel state information (CSI) measurements on one or more reference signal transmissions from a base station; determine, based at least in part on the CSI measurements, a set of non-zero linear combination complex coefficients for weighting and co-phasing for a linear combination of a plurality of frequency domain basis vectors and a plurality of spatial domain basis vectors; and transmit a CSI feedback, wherein a first part of the CSI feedback includes at least an indication of a number of the set of non-zero linear combination complex coefficients with regard to all layers of a communication link between the UE and the base station. Numerous other aspects are provided.

公开(公告)号：US12040867B2

公开(公告)日：2024-07-16

申请号：US17310350

申请日：2020-02-11

Applicant: QUALCOMM Incorporated

Inventor： Ruifeng Ma ,  Yuwei Ren ,  Bo Chen ,  Yu Zhang ,  Liangming Wu ,  Chenxi Hao ,  Renqiu Wang ,  Hao Xu ,  Tingfang Ji

IPC: H04B7/06 ,  H04W72/23

CPC classification number: H04B7/0626 ,  H04W72/23

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine that a user equipment (UE) is to use a differential reporting mode based at least in part on a channel state information (CSI) report from the UE. The base station may transmit to the UE, signaling to cause the UE to use the differential reporting mode based at least in part on determining that the UE is to use the differential reporting mode. Numerous other aspects are provided.

公开(公告)号：US12015467B2

公开(公告)日：2024-06-18

申请号：US17299250

申请日：2019-12-12

Applicant: QUALCOMM Incorporated

Inventor： Chenxi Hao ,  Liangming Wu ,  Qiaoyu Li ,  Joseph Binamira Soriaga ,  Peter Gaal ,  Wanshi Chen

IPC: H04B7/06

CPC classification number: H04B7/0663 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639

Abstract: Certain aspects of the present disclosure provide techniques for a coefficients report for compressed channel state information (CSI) feedback. A method for wireless communication by a user equipment (UE) includes receiving a CSI report configuration configuring the UE for reporting precoding matrix information including, a plurality of selected beams L, a frequency domain compression matrix F for each of the L beams at each of a plurality of taps M in the time domain, and a subset of a plurality of linear combination coefficients associated with the frequency domain compression matrices and beams. The UE determines the coefficients based on a first evaluation that is, for each beam, an evaluation of the amplitude of the coefficients across the taps, and a second evaluation and a evaluation that is, for each tap, an evaluation of the amplitude of the linear combination coefficients across the beams. The UE reports the first and second evaluations.

公开(公告)号：US12009899B2

公开(公告)日：2024-06-11

申请号：US17310444

申请日：2020-02-04

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu Li ,  Liangming Wu ,  Chenxi Hao ,  Yu Zhang ,  Chao Wei ,  Hao Xu ,  Parisa Cheraghi ,  Wanshi Chen

IPC: H04B7/0417 ,  H04B7/06

CPC classification number: H04B7/0658 ,  H04B7/0626 ,  H04B7/063

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit, in a first part of two-part channel state information (CSI), a rank indication (RI) and an indication of one or more numbers of first transfer domain coefficients to be used to characterize compressed CSI for one or more layers; and transmit, in a second part of the two-part CSI, an indication of one or more numbers of second transfer domain coefficients to be used to characterize compressed CSI for one or more beams for the one or more layers. Numerous other aspects are provided.

公开(公告)号：US12009898B2

公开(公告)日：2024-06-11

申请号：US17288496

申请日：2019-10-30

Applicant: QUALCOMM Incorporated

Inventor： Liangming Wu ,  Chenxi Hao ,  Qiaoyu Li ,  Chao Wei ,  Wanshi Chen ,  Joseph Binamira Soriaga ,  Yu Zhang

IPC: H04B7/06 ,  H04B7/0408

CPC classification number: H04B7/0658 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0639

Abstract: Certain aspects of the present disclosure provide techniques for reporting channel state information (CSI) with spatial and time domain compression.

公开(公告)号：US12003307B2

公开(公告)日：2024-06-04

申请号：US17744373

申请日：2022-05-13

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04B7/0456

CPC classification number: H04B7/0695 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0626

Abstract: Methods, systems, and devices for wireless communication are described. In wireless systems supporting multiple-input, multiple-output (MIMO) transmissions, devices may implement beam-forming to improve reliability of communications. A user equipment (UE) may select a set of beams, and corresponding beam indices, for communication based on reference signals received from a base station. The UE may determine values corresponding to each of the beam indices using a scalable set of tables. For example, the UE may select a subset of the tables based on the number of selected beams, and may determine the values based on these tables. In this way, the UE may efficiently store sets of tables for multiple different configurations. The UE may sum the corresponding values to obtain a combination index value, and may transmit the combination index value to the base station. The base station may determine the selected beams based on this combination index value.

公开(公告)号：US12003298B2

公开(公告)日：2024-06-04

申请号：US17296608

申请日：2019-12-06

Applicant: Qualcomm Incorporated

Inventor： Chao Wei ,  Liangming Wu ,  Chenxi Hao ,  Qiaoyu Li ,  Min Huang

IPC: H04W72/04 ,  H04B7/06 ,  H04W28/06

CPC classification number: H04B7/0626 ,  H04B7/0634 ,  H04W28/06

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may report basis subset selection for a set of beams, where the basis vectors are used for frequency domain compression. To reduce reporting overhead, the UE may transmit two reports indicating the basis vectors. The first report may include first information for the basis vectors and is of a known payload size to both the UE and a base station, while the second report may include second information for the basis vectors and may have a payload size dependent on the first information. The base station may decode the first report and may use the decoded first information to decode the second report. Based on the first and second information, the base station may determine the reported set of basis vectors to use for frequency domain compression and may determine non-zero precoding coefficients.