公开(公告)号：US20210051509A1

公开(公告)日：2021-02-18

申请号：US17044207

申请日：2019-04-02

Applicant: Liangming WU ,  Yu ZHANG ,  Yi HUANG ,  Chenxi HAO ,  Wanshi CHEN ,  QUALCOMM Incorporated

Inventor： Liangming WU ,  Yu ZHANG ,  Yi HUANG ,  Chenxi HAO ,  Wanshi CHEN

IPC: H04W24/10 ,  H04W72/12 ,  H04L1/18 ,  H04B7/06 ,  H04W72/04

Abstract: Certain aspects of the present disclosure provide techniques for collision handling for channel state information (CSI) reporting on a physical uplink shared channel (PUSCH). A method for wireless communications by a user equipment (UE) is provided. The method generally includes receiving scheduling for at least one CSI reporting transmission and at least one uplink transmission in a same slot. The UE determines to multiplex the at least one CSI and the at least one uplink transmission in the slot or to drop the at least one CSI or the at least one uplink transmission in the slot. The UE transmits in the slot at least one of: the at least one CSI transmission or the at least one uplink transmission based on the determination.

公开(公告)号：US20200351029A1

公开(公告)日：2020-11-05

申请号：US16758549

申请日：2018-10-02

Applicant: Jian LI ,  Changlong XU ,  Kai CHEN ,  Liangming WU ,  Jing JIANG ,  Hao XU ,  QUALCOMM Incorporated

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

IPC: H04L1/18 ,  H04L1/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may perform a first transmission of a communication that is encoded using a polar coding technique; and perform at least one retransmission of the communication, wherein more resources are allocated for the at least one retransmission than for the first transmission, and wherein the at least one retransmission includes an incremental redundancy version of the communication and a version of the communication for Chase combination. Numerous other aspects are provided.

公开(公告)号：US20200343909A1

公开(公告)日：2020-10-29

申请号：US16760758

申请日：2018-09-21

Applicant: QUALCOMM Incorporated

Inventor： Kai CHEN ,  Liangming WU ,  Changlong XU ,  Jing JIANG ,  Hao XU

IPC: H03M13/09 ,  H03M13/00 ,  H03M13/15 ,  H04L1/00

Abstract: Certain aspects of the present disclosure generally relate to techniques for encoding and decoding bits of information using cyclic redundancy check (CRC) concatenated polar encoding and decoding. The CRC concatenated polar encoding techniques may avoid transmission of dummy bits. A method generally includes obtaining the bits of information to be transmitted. The method includes performing CRC outer encoding of the bits of information using an even-weighted generator polynomial to produce CRC encoded bits. The method includes performing polar inner encoding of the CRC encoded bits to generate a codeword. The method includes discarding a first code bit at a beginning of the codeword. The shortened codeword is transmitted over a wireless medium. In another method, bit-level scrambling is performed on the CRC encoded bits before the polar encoding to avoid generating a dummy bit. In another method, only odd-weighted generator polynomials are selected to avoid generating the dummy bit.

公开(公告)号：US20200274598A1

公开(公告)日：2020-08-27

申请号：US16649097

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04B7/0456

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for signaling precoder(s) for non-PMI based CSI feedback.

公开(公告)号：US20200059282A1

公开(公告)日：2020-02-20

申请号：US16608027

申请日：2018-05-04

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Yu ZHANG

IPC: H04B7/06 ,  H04W72/04 ,  H04B7/0413 ,  H04L1/00

Abstract: Techniques and apparatus for configuring differential channel state information (CSI) reporting for high resolution CSI are provided. One technique includes determining a configuration for a user equipment (UE) to use for reporting differential CSI feedback. The configuration includes at least an indication of when the UE is to report differential CSI feedback, and is signaled to the UE. Once received, the UE reports differential CSI feedback according to the configuration.

公开(公告)号：US20190058560A1

公开(公告)日：2019-02-21

申请号：US16078434

申请日：2017-02-17

Applicant: Bo CHEN ,  Chao WEI ,  Liangming WU ,  Neng WANG ,  QUALCOMM Incorporated

Inventor： Bo CHEN ,  Chao WEI ,  Liangming WU ,  Neng WANG

IPC: H04L5/00 ,  H04W24/08 ,  H04B7/0413 ,  H04W24/10

Abstract: Channel covariance feedback is disclosed for enhanced full-dimension multiple input, multiple output (eFD-MIMO) systems. Channel state information (CSI) reference signal (CSI-RS) feedback operations are implemented using spatial covariance feedback of a covariance estimate. After obtaining a set of orthogonal basis vectors, a user equipment (UE) measures the CSI-RS from a base station and determines the spatial covariance matrix from the signal. The UE may then compress the spatial covariance matrix into a lower-dimension covariance estimate matrix using the orthogonal basis vectors. The lower-dimension matrix along with element-wise quantization allows for feedback of spatial covariance for eFD-MIMO systems without excessive feedback overhead.