公开(公告)号：US20240147546A1

公开(公告)日：2024-05-02

申请号：US18549269

申请日：2022-05-11

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Kexin XIAO ,  Gokul SRIDHARAN

IPC: H04W74/0836 ,  H04L1/1867 ,  H04L5/00

CPC classification number: H04W74/0836 ,  H04L1/189 ,  H04L5/0053

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a physical random access channel (PRACH) message corresponding to a PRACH occasion, wherein the PRACH occasion comprises a dedicated PRACH occasion or one of a plurality of PRACH occasions comprising at least one shared PRACH occasion associated with a two-step random access channel (RACH) procedure and a four-step RACH procedure, wherein the PRACH message includes a request for physical uplink shared channel (PUSCH) repetition corresponding to a radio resource control (RRC) connection request message of the four-step RACH procedure. The UE may transmit at least one PUSCH repetition associated with the RRC connection request message based at least in part on the request. Numerous other aspects are described.

公开(公告)号：US20240121035A1

公开(公告)日：2024-04-11

申请号：US18263671

申请日：2021-03-09

Applicant: QUALCOMM INCORPORATED

Inventor： Kexin XIAO ,  Liangming WU ,  Changlong XU ,  Kangqi LIU ,  Jian LI ,  Hao XU ,  Ruiming ZHENG ,  Wei LIU

IPC: H04L1/1867

CPC classification number: H04L1/189 ,  H04L1/1874

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a wireless device may In use non-uniformly distributed bits for amplitude mapping and uniformly distributed bits for sign mapping to support probabilistic constellation shaping (PCS) for transmission of a message. To provide a coding gain with one or more retransmissions of the message, the device may configure redundancy versions based on the non-uniform distribution of one or more symbols. In some examples, the device may include the same set of non-uniformly distributed systematic bits or at least a portion of non-uniformly distributed systematic bits in each redundancy version of the message. Additionally or alternatively, the device may use multiple modulation and coding scheme (MCS) values to modulate one or more of the redundancy versions, where a first MCS value is used to modulate non-uniformly distributed symbols and a second MCS value is used to modulate uniformly distributed symbols.

公开(公告)号：US20240048308A1

公开(公告)日：2024-02-08

申请号：US18264554

申请日：2021-04-04

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy ABDELGHAFFAR ,  Kexin XIAO ,  Yu ZHANG

IPC: H04L5/00 ,  H04W72/23

CPC classification number: H04L5/0048 ,  H04W72/23 ,  H04L5/0053 ,  H04L5/001

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a configuration that may identify a set of time and frequency resources for transmission of sounding reference signals, the set of time and frequency resources including a plurality of subsets of time and frequency resources. Each subset of time and frequency resources of the plurality of subsets of time and frequency resources may be associated with a corresponding value of a plurality of values of a partial frequency parameter. The UE may receive control signaling indicating a value of the partial frequency parameter of the plurality of values. The UE may transmit a sounding reference signal on a subset of time and frequency resources of the plurality of subsets of time and frequency resources that corresponds to the value of the partial frequency parameter indicated by the received control signaling.

公开(公告)号：US20240007170A1

公开(公告)日：2024-01-04

申请号：US18253890

申请日：2021-01-15

Applicant: QUALCOMM INCORPORATED

Inventor： Hung Dinh LY ,  Kexin XIAO ,  Hwan Joon KWON

IPC: H04B7/06 ,  H04B7/0408 ,  H04W74/08

CPC classification number: H04B7/0695 ,  H04B7/0408 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may initiate a random access procedure with a base station. The UE may transmit a random access channel (RACH) preamble to the base station. The UE may receive, from the base station and in response to the RACH preamble, a random access response (RAR) message. The UE may then identify a beam configuration for transmission of repetitions of an uplink transmission response to the RAR message. The UE may then transmit the repetitions of the uplink transmission using one or more beams in accordance with the beam configuration.

公开(公告)号：US20230403123A1

公开(公告)日：2023-12-14

申请号：US18044973

申请日：2020-11-18

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Changlong XU ,  Jian LI ,  Kangqi LIU ,  Kexin XIAO ,  Hao XU

IPC: H04L5/00 ,  H04L27/34

CPC classification number: H04L5/0094 ,  H04L27/3483

Abstract: Methods, systems, and devices for wireless communication at a user equipment (UE) are described. A user equipment (UE) may receive a configuration indicating a mapping between a set of multiple subband indices and a set of multiple encoding parameter sets. The UE may apply, at a first distribution matcher, a first encoding parameter set to a first subset of a bit stream. The UE may also apply, at a second distribution matcher, a second encoding parameter set to a second subset of the bit stream. The a first encoding parameter set may be associated with a first subband index and the second encoding parameter set may be associated with a second subband index. The UE may then transmit a first modulated bit stream on a first subband, and a second modulated bit stream on a second subband.

公开(公告)号：US20250142488A1

公开(公告)日：2025-05-01

申请号：US18832449

申请日：2022-03-17

Applicant: QUALCOMM Incorporated

Inventor： Kexin XIAO ,  Yu ZHANG ,  Hyojin LEE

IPC: H04W52/36 ,  H04W52/32 ,  H04W52/42

Abstract: Methods, systems, and devices for wireless communication at a communication device are described. The communication device may be configured to support reporting of power imbalances between antennas of the communication device. In some cases, the communication device may report a power imbalance between at least two of the antennas in the form of a power offset value based on a respective antenna polarization. In other cases, the communication device may report the power imbalance between the at least two antennas in the form of a power offset value based on a respective antenna panel. In some other cases, the communication device may be configured to report the power imbalance between the at least two antennas in the form of a power offset value for each separate antenna. The communication device may transmit a report with an indication of the power imbalance (e.g., power offset value) to the network.

公开(公告)号：US20250097986A1

公开(公告)日：2025-03-20

申请号：US18728373

申请日：2022-04-02

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Kexin XIAO ,  Hwan Joon KWON

IPC: H04W74/0833 ,  H04W72/1268

Abstract: Methods, systems, and devices for wireless communication at a user equipment (UE) are described. A UE may receive an indication of a set of random access occasions associated with a random access procedure. The UE may transmit a set of uplink random access channel messages over the set of random access occasions corresponding to the set of uplink random access channel messages. The UE may select a radio network temporary identifier for the UE based on a defined position within the set of random access occasions and receive a downlink random access channel message using the radio network temporary identifier based on the defined position within the set of random access occasions.

公开(公告)号：US20250056399A1

公开(公告)日：2025-02-13

申请号：US18718389

申请日：2022-02-02

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Kexin XIAO ,  Wanshi CHEN

IPC: H04W48/20 ,  H04W74/0833

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a network entity, a downlink message associated with a first random access channel (RACH) procedure between the network entity and the UE, the downlink message including an accessibility indicator of a first cell supported by the network entity, the accessibility indicator indicating whether the first cell is inactive at a future time period. The UE may perform one of the first RACH procedure for the first cell based at least in part on the accessibility indicator indicating that the first cell supported by the network entity is active at the future time period or a second RACH procedure for a second cell based at least in part on the accessibility indicator indicating that the first cell supported by the network entity is inactive at the future time period.

公开(公告)号：US20240243840A1

公开(公告)日：2024-07-18

申请号：US18563020

申请日：2021-07-07

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Wei LIU ,  Kexin XIAO ,  Changlong XU ,  Ori SHENTAL ,  Thomas Joseph RICHARDSON ,  Hao XU

IPC: H04L1/00

CPC classification number: H04L1/0042 ,  H04L1/0003

Abstract: In a probabilistic amplitude shaping (PAS) system, a distribution matching (DM) component may receive a uniform bit sequence with equal probabilities, which may be converted into symbols with a desired probability distribution (e.g., Gaussian). For example, the probability distribution may use inner constellation points associated with a lower energy and/or power more frequently and outer constellation points associated with a higher energy and/or power less frequently. In general, the DM component may map binary bits to positive amplitudes with a non-uniform distribution according to a DM rate that is based at least in part on a signal-to-noise ratio (SNR), which may vary significantly in a spatial and frequency selective wireless channel. Accordingly, some aspects described herein relate to configuring DM parameters and codeword and resource mappings in a spatial and frequency selective wireless channel.

公开(公告)号：US20240214256A1

公开(公告)日：2024-06-27

申请号：US18557037

申请日：2021-06-16

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Kexin XIAO ,  Changlong XU ,  Wei LIU ,  Hao XU ,  Thomas Joseph RICHARDSON ,  Ori SHENTAL

IPC: H04L27/36 ,  H04L1/00 ,  H04L27/34

CPC classification number: H04L27/362 ,  H04L1/0058 ,  H04L27/3411

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may perform distribution matching on at least a first subset of a set of bits, such as the bits of transport block. The distribution matching may include a variable-to-fixed (v2f) distribution matching procedure in which a ratio between a quantity of input bits to output interim symbols for the v2f distribution matching procedure is variable. The distribution matching include evaluating, after each instance of the v2f distribution matching procedure, whether additional bits remain for distribution matching, and if so, whether to perform an additional instance of the v2f distribution matching procedure or an alternative distribution matching procedure on the remaining bits. Corresponding techniques for a receiving device are also described, including distribution dematching techniques based on a v2f distribution dematching procedure.