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：US20250048420A1

公开(公告)日：2025-02-06

申请号：US18713513

申请日：2022-02-24

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/00 ,  H04W74/0833

Abstract: A method for wireless communication performed by a user equipment (UE) includes transmitting, to a network node, a group of physical random access channel (PRACH) preambles. Each PRACH preamble may be transmitted during a respective PRACH occasion of a group of PRACH occasions. The method also includes receiving, from the network node via a downlink control channel, a downlink grant indicating downlink resources for receiving a random access response (RAR) based on transmitting the group of PRACH preambles. The downlink control channel may be scrambled based on a random access-radio network temporary identifier (RA-RNTI) associated with a single PRACH occasion of the group of PRACH occasions. The method still further includes receiving, from the network node via the downlink resources, the RAR based on receiving the downlink grant. The method also includes transmitting, to the network node, a random access message based on receiving the RAR.

公开(公告)号：US20250039799A1

公开(公告)日：2025-01-30

申请号：US18718593

申请日：2022-03-02

Applicant: QUALCOMM Incorporated

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

IPC: H04W52/14 ,  H04W52/50 ,  H04W74/0833

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to transmit multiple repetitions of a random access message using multiple spatial filters. In some cases, the UE may transmit each repetition of the random access message using a same transmission power determined based on one of the spatial filters. In other cases, the UE may transmit each repetition of the random access message using a different transmission power determined in accordance with power control parameters corresponding to the respective spatial filters. The UE may utilize a spatial filter of a first-received responsive random access message to perform subsequent transmissions of a random access procedure. In the case of a failure of the random access procedure, the UE may increment (or refrain from incrementing) a power ramping counter based on spatial filters used to re-initiate the random access procedure.

公开(公告)号：US20250038881A1

公开(公告)日：2025-01-30

申请号：US18715918

申请日：2022-02-25

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/00 ,  H04L1/24

Abstract: Methods, systems, and devices for wireless communications are described. A receiving device may receive an encoded signal including a set of information blocks. Each information block may include a set of encoded information bits and a set of cyclic redundancy check (CRC) bits. The receiving device may perform a staircase decoding procedure to decode the set of encoded information bits of a selected information block that is part of a subset of the set of information blocks that is within a sliding window. The staircase decoding procedure may include one or more iterations of a decoding process applied to the subset of the set of information blocks. The receiving device may perform, inbetween iterations of the staircase decoding procedure applied to the subset of the set of information blocks within the sliding window, a CRC procedure based on the set of CRC bits in the set of information blocks.

公开(公告)号：US20240405833A1

公开(公告)日：2024-12-05

申请号：US18691632

申请日：2021-11-08

Applicant: QUALCOMM Incorporated

Inventor： Hyojin LEE ,  Yu ZHANG ,  Kexin XIAO ,  Yi HUANG

IPC: H04B7/06 ,  H04B7/0456 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit, from a UE to a base station, one or more reference signals over a channel. The UE may receive, from the base station based at least in part on transmitting the one or more reference signals, control signaling indicating a precoding matrix indicator (PMI) and a rank indicator (RI) based at least in part on the UE having at least eight transmit antennas and based at least in part on a phase difference between different subsets of transmit antennas of the at least eight transmit antennas. The UE may transmit, to the base station, an uplink transmission configured according to the PMI and the RI.

公开(公告)号：US20240356588A1

公开(公告)日：2024-10-24

申请号：US18291521

申请日：2021-09-29

Applicant: QUALCOMM Incorporated

Inventor： Kexin XIAO ,  Hyojin LEE ,  Yu ZHANG ,  Yi HUANG ,  Muhammad Sayed Khairy ABDELGHAFFAR ,  Runxin WANG ,  Krishna Kiran MUKKAVILLI

IPC: H04B7/0404 ,  H04B7/0456

CPC classification number: H04B7/0404 ,  H04B7/0456

Abstract: Methods, systems, and devices for wireless communications are described. Generally, a user equipment (UE) may communicate on first and second carriers, and may support either two transmit chains or three transmit chains on a second carrier. A base station may configure different sounding reference signal (SRS) resources for different numbers of transmit chains. SRS resources configured with two ports may indicate two transmit chains, and SRS resource configured with three ports may indicate three transmit chains. The base station may indicate an index associated with an SRS resource, and the UE may select (e.g., based on a mapping between the SRS Configuration Information resource index and a number of SRS ports and a number of transmit chains), a corresponding SRS resource, number of ports, number of transmit chains, or any combination thereof. The base station may indicate a number of transmit chains for a given SRS resource based on a PMI index.

公开(公告)号：US20240333350A1

公开(公告)日：2024-10-03

申请号：US18577853

申请日：2021-09-06

Applicant: QUALCOMM Incorporated

Inventor： Hyojin LEE ,  Yu ZHANG ,  Kexin XIAO ,  Hwan Joon KWON

IPC: H04B7/0456

CPC classification number: H04B7/0456

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may select a codebook for a multiple-input multiple-output (MIMO) communication from among one or more codebooks that include one or more of non-coherent codebooks for 6 or 8 antennas of the wireless communication device, partially-coherent codebooks for multiple paired antennas of the 6 or 8 antennas of the wireless communication device, or full-coherent codebooks for the 6 or 8 antennas of the wireless communication device. The wireless communication device may transmit or receiving the communication using the codebook. Numerous other aspects are described.

公开(公告)号：US20240106565A1

公开(公告)日：2024-03-28

申请号：US18256043

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: H04L1/00 ,  H04W4/44 ,  H04W36/08

CPC classification number: H04L1/0009 ,  H04L1/0075 ,  H04W4/44 ,  H04W36/08

Abstract: Apparatus, methods, and computer-readable media for network coding for handover are disclosed herein. A base station (BS) transmits a first group of encoded packets to a first road side unit (RSU) over a first radio access network (RAN) interface. The BS initiates a handover procedure between the first RSU and a second RSU. The BS receives, from the first RSU, a release acknowledgment associated with the handover procedure and feedback associated with the first group of encoded packets. The BS transmits network coding level information to the second RSU over a second RAN interface based on the feedback. The network coding level information indicates a number of missing encoded packets within the first group of encoded packets for the second RSU to transmit to the UE. The BS transmits, to the UE, a second group of encoded packets associated with the number of missing encoded packets at the second RSU.