公开(公告)号：US11539456B2

公开(公告)日：2022-12-27

申请号：US16759255

申请日：2018-11-20

Applicant: QUALCOMM Incorporated

Inventor： Changlong Xu ,  Kai Chen ,  Jing Jiang ,  Gabi Sarkis ,  Hao Xu

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/08

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching a stream of bits encoded using polar codes. An exemplary method generally includes determining a target coding rate, RT, for transmitting a group of K information bits, based on a first coding rate, R1, corresponding to a first target block error rate (BLER) for a first transmission of a first redundancy version (RV) of the packet and a second coding rate, R2, corresponding to a second target BLER for a last transmission of a last RV of the packet; determining a circular buffer size, N, of a circular buffer for use in transmitting the first RV and the last RV of the packet; generating encoded information bits from the K information bits using a polar code having a mother code size of N; writing the encoded information bits to the circular buffer; determining a maximum number of retransmissions, based on a latency requirement for the packet; generating different RVs from the encoded information bits in the circular buffer, each RV based on a corresponding target BLER; and transmitting the first RV via a wireless medium.

公开(公告)号：US11497019B2

公开(公告)日：2022-11-08

申请号：US16447606

申请日：2019-06-20

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Tingfang Ji ,  Durga Prasad Malladi

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26

Abstract: Methods and apparatuses for adaptive subcarrier spacing in wireless communication networks are described. For example, the described aspects include transmitting, from the UE to a network entity, a first PRACH transmission with a first subcarrier spacing; determining, by the UE, that the first PRACH transmission to the network entity is not successful; and transmitting, from the UE, a second PRACH transmission with a second subcarrier spacing in response to determining that the first PRACH transmission is not successful, wherein the first subcarrier spacing is different from the second subcarrier spacing.

公开(公告)号：US11496193B2

公开(公告)日：2022-11-08

申请号：US17054234

申请日：2019-05-09

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04L5/00 ,  H04W24/08 ,  H04W24/10

Abstract: Certain aspects of the present disclosure provide techniques for aperiodic channel state information (A-CSI) feedback scheduling for cross-carriers. Certain aspects provide a method for wireless communication. The method generally includes receiving on a first component carrier (CC) signaling indicating an aperiodic channel state information (CSI) report request for a plurality of CCs; determining schedules for at least CSI reference signal (CSI-RS) transmissions on the CCs based on the received signaling; monitoring CSI-RS transmissions on the CCs according to the determined schedules; and reporting CSI feedback based on CSI-RS measurements of the CSI-RS transmissions.

公开(公告)号：US11490413B2

公开(公告)日：2022-11-01

申请号：US16633399

申请日：2018-09-07

Applicant: QUALCOMM Incorporated ,  Yu Zhang ,  Hao Xu ,  Chao Wei ,  Peng Cheng ,  Wanshi Chen ,  Peter Gaal ,  Durga Prasad Malladi

Inventor： Yu Zhang ,  Hao Xu ,  Chao Wei ,  Peng Cheng ,  Wanshi Chen ,  Peter Gaal ,  Durga Prasad Malladi

IPC: H04W72/14 ,  H04L5/00 ,  H04W72/04

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. More particularly, certain aspects of the present disclosure relate to early termination of a downlink channel repetition transmission, early termination of an uplink channel repetition, and/or determination of a plurality of beams for a repetition transmission. Numerous other aspects are provided.

公开(公告)号：US11477784B2

公开(公告)日：2022-10-18

申请号：US16756729

申请日：2018-08-30

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Alberto Rico Alvarino ,  Le Liu ,  Wanshi Chen ,  Xiao Feng Wang ,  Hao Xu

IPC: H04L12/28 ,  H04W72/04 ,  H04L5/00 ,  H04J1/16 ,  H04W74/08

Abstract: In some aspects, the SIB1 message is transmitted in a subframe 0 and a subframe 5 of alternating radio frames of the non-anchor carrier. In some aspects, the SIB1 message is transmitted in a subframe 0 of alternating radio frames of the anchor carrier. In some aspects, the frequency domain location parameter is associated with a physical resource block offset relative to a center frequency, and the anchor carrier is in a first frequency range greater than the center frequency by the physical resource block offset and the non-anchor carrier is in a second frequency range less than the center frequency by the physical resource block offset, or the non-anchor carrier is in the first frequency range greater than the center frequency by the physical resource block offset and the anchor carrier is in the second frequency.

公开(公告)号：US11463297B2

公开(公告)日：2022-10-04

申请号：US17264261

申请日：2018-08-07

Applicant: QUALCOMM Incorporated

Inventor： Chenxi Hao ,  Yu Zhang ,  Liangming Wu ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal

IPC: H04L23/02 ,  H04L27/34 ,  H04B17/336 ,  H04B17/373 ,  H04L5/00

Abstract: Certain aspects of the present disclosure provide techniques for adaptive modulo base selection for non-linear precoding. Aspects provide a method for wireless communications that can be performed by a base station (BS). The BS adaptively selects a modulo base for a data stream for at least one user equipment (UE) in a transmission to one or more UEs. The BS selects the modulo base based on one or more parameters. The BS transmits a signal for at least one UE of the one or more UEs to identify the selected modulo base. The BS performs the transmission to the one or more UEs. The UE receives the transmission from the BS and the signal for the identification of the selected modulo base. Based on the signal, the UE determines the modulo base for at least one data stream in the transmission and decodes the data stream using the modulo base.

公开(公告)号：US11456906B2

公开(公告)日：2022-09-27

申请号：US16991609

申请日：2020-08-12

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Tingfang Ji ,  John Edward Smee

IPC: H04L27/26 ,  H04L5/00 ,  G01S13/50 ,  H04L23/02 ,  H04L25/02

Abstract: Certain aspects of the present disclosure provide techniques for transmitting and processing reference signals, such as DMRS, that may account for mobility characteristics (e.g., that relate to a Doppler measurement) of a wireless node (e.g., a UE), such as Doppler measurements indicating how fast such a device is moving.

公开(公告)号：US11451245B2

公开(公告)日：2022-09-20

申请号：US16628209

申请日：2017-08-04

Applicant: QUALCOMM Incorporated

Inventor： Jian Li ,  Changlong Xu ,  Jing Jiang ,  Hao Xu ,  Jilei Hou

IPC: H03M13/00 ,  H03M13/27 ,  H03M13/15 ,  H03M13/29

Abstract: Aspects of the disclosure relate to wireless communication devices configured to encode information blocks to produce code blocks and interleave the code blocks utilizing an interleaver including a plurality of rows and a plurality of columns. In some examples, the interleaver includes a right isosceles triangle-shaped matrix of rows and columns. In other examples, the interleaver includes a rectangle-shaped matrix of rows and columns.

公开(公告)号：US20220287032A1

公开(公告)日：2022-09-08

申请号：US17751403

申请日：2022-05-23

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wei Zeng ,  Jing Jiang ,  Tingfang Ji

IPC: H04W72/04 ,  H04L5/00 ,  H04B17/336 ,  H04B7/0413 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) and a base station may support switching from one waveform to another on uplink channels. For example, a UE and a base station may utilize both frequency division multiplexing (SC-FDM) waveform and an orthogonal frequency division multiplexing (OFDM) waveforms based on channel conditions and other factors. In some examples, a UE may switch for some uplink channels, and use a single waveform for other channels. For example, switching waveforms for channels that utilize frequency domain code division multiplexing (CDM) channel may interrupt the orthogonality of multiplexed transmissions. A UE may transition from one waveform to another either autonomously or based on an explicit indication from a base station. If a UE switches autonomously, it may send an indication of the transition to the serving base station.

公开(公告)号：US11431394B2

公开(公告)日：2022-08-30

申请号：US16476593

申请日：2018-01-19

Applicant: Qualcomm Incorporated

Inventor： Kapil Bhattad ,  Alberto Rico Alvarino ,  Gowrisankar Somichetty ,  Shashidhar Vummintala ,  Hao Xu

IPC: H04B7/06 ,  H04W8/22 ,  H04W24/10 ,  H04W28/20 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may monitor a first control channel in a first frequency band. The UE may determine that a bandwidth capability of the UE supports communicating on the first frequency band and at least a second frequency band. The UE may perform a channel measurement procedure on the first frequency band and the second frequency band concurrently. The UE may transmit a channel feedback message including information associated with the channel measurement procedure.