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.

公开(公告)号：US20240137261A1

公开(公告)日：2024-04-25

申请号：US18547682

申请日：2021-04-22

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/34 ,  H04L5/00

CPC classification number: H04L27/34 ,  H04L5/0053 ,  H04L5/0091

Abstract: Methods, systems, and devices for wireless communications are described in which a receiving device, such as a base station or user equipment (UE), may receive an input signal that is modulated according to a probabilistic amplitude shaping (PAS) modulation technique. The receiving device may determine an associated channel noise estimate and may scale the input signal and the channel noise estimate based on a probability distribution parameter that is associated with the PAS modulation. The receiving device may demap the modulation constellation of the input signal based on the scaled input signal and the scaled channel noise estimate and provide one or more bits associated with the PAS modulated constellation. The probability distribution parameter may be estimated at the receiving device, or the transmitting device may provide the probability distribution parameter to the receiving device.

公开(公告)号：US20240048287A1

公开(公告)日：2024-02-08

申请号：US18256042

申请日：2021-02-10

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/1829

CPC classification number: H04L1/1832 ,  H04L1/1848

Abstract: Apparatus, methods, and computer-readable media for network coding for dual connectivity are disclosed herein. A base station (BS) sends encoded symbols from a first network coding layer to a first radio link control (RLC) layer and transmits, to a user equipment (UE), encoded data comprising the encoded symbols. The BS also transmits encoded data to a road side unit (RSU) for passing to the UE as a split transmission. The UE can receive encoded packets from the BS and RSU at a network coding layer via a second RLC layer. The UE recovers source packets from the encoded packets with a rateless network code at the network coding layer. The UE sequences the source packets into an ordered set of source packets at the network coding layer and sends the ordered set of source packets from the network coding layer to a packet data convergence protocol layer for processing.

公开(公告)号：US20240015707A1

公开(公告)日：2024-01-11

申请号：US18253774

申请日：2022-01-13

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Kexin XIAO

IPC: H04W72/0446 ,  H04L25/02 ,  H04L5/00 ,  H04W72/21

CPC classification number: H04W72/0446 ,  H04L25/0226 ,  H04L5/0051 ,  H04L5/0053 ,  H04W72/21

Abstract: Aspects are provided that allow a UE to perform DMRS bundling in PUCCH repetitions in response to a configuration from a base station indicating or enabling the UE to perform the DMRS bundling. The UE receives a configuration from a base station indicating to bundle DMRS in repetitions of an uplink control channel transmission. The UE determines a DMRS bundling window based on the configuration. The UE transmits the bundled DMRS in the DMRS bundling window. The base station processes the bundled DMRS. Improved link quality between the UE and base station and signal gains may accordingly result from applying DMRS bundling over multiple repetitions of PUCCH transmissions.

公开(公告)号：US20220330218A1

公开(公告)日：2022-10-13

申请号：US17716306

申请日：2022-04-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00

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：US20250119953A1

公开(公告)日：2025-04-10

申请号：US18836173

申请日：2022-04-06

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/0833 ,  H04B7/06 ,  H04W72/0446

Abstract: The described techniques enable repeated physical random access channel (PRACH) preamble transmissions across multiple random access occasions (ROs) using a same spatial filter. A user equipment (UE) may transmit a PRACH preamble across multiple ROs, where each RO is associated with a same synchronization signal block (SSB) or channel state information reference signal (CSI-RS). In such cases, the PRACH repetitions may be transmitted in ROs in accordance with a mapping rule: first, in increasing order of frequency resource index; second, in increasing order of a time resource index; third, in increasing order of PRACH slot indices; and fourth, in increasing order of PRACH association period indices. Additionally, or alternatively, the PRACH repetitions may be transmitted in ROs in accordance with a mapping rule: first, in increasing order of time resource index; second, in increasing order of PRACH slot indices; and third, in increasing order of PRACH association period indices.

公开(公告)号：US20240397481A1

公开(公告)日：2024-11-28

申请号：US18694862

申请日：2021-11-15

Applicant: QUALCOMM Incorporated

Inventor： Kexin XIAO ,  Hung Dinh LY ,  Huilin XU

IPC: H04W68/02 ,  H04W72/23

Abstract: Method and apparatus for carrier selection for paging on a flexible cell. The apparatus receives an indication to monitor at least one carrier from a flexible cell for a paging message. The flexible cell comprising an anchor carrier and one or more non-anchor carriers. The apparatus monitors a first carrier from the flexible cell for the paging message based on the indication, the paging message associated with a PDCCH that schedules a PDSCH. The apparatus may receive, from the flexible cell, a downlink BWP configuration for the anchor carrier and the one or more non-anchor carriers.