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：US20250048433A1

公开(公告)日：2025-02-06

申请号：US18717606

申请日：2022-02-23

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Kexin XIAO ,  Krishna Kiran MUKKAVILLI

IPC: H04W74/0833

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network entity, multiple physical random access channel (PRACH) transmissions based at least in part on a PRACH slot frequency hopping. The UE may receive, from the network entity, a response based at least in part on the multiple PRACH transmissions associated with the PRACH slot frequency hopping. Numerous other aspects are described.

公开(公告)号：US20250030525A1

公开(公告)日：2025-01-23

申请号：US18715692

申请日：2022-02-23

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Kexin XIAO ,  Gokul SRIDHARAN

IPC: H04L5/00 ,  H04W72/0453

Abstract: A base station and a user equipment (UE) may perform a dynamic waveform switching for physical uplink shared channel (PUSCH) transmissions. The base station may send a configuration for dedicated waveform switching associated with the PUSCH transmissions, and transmit, to the UE, an indication of a first waveform for transmitting the PUSCH, the indication being independent of the bandwidth part (BWP) configuration for the PUSCH. Based on the configuration for the dedicated waveform switching associated with the PUSCH transmissions and the indication of the first waveform for the PUSCH transmission, the UE may transmit the PUSCH, at least one PUSCH repetition, and at least one retransmission of the PUSCH, and the base station may receive the PUSCH, at least one PUSCH repetition, and at least one retransmission of the PUSCH.

公开(公告)号：US20240430786A1

公开(公告)日：2024-12-26

申请号：US18708052

申请日：2022-01-25

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Kexin XIAO ,  Krishna Kiran MUKKAVILLI

IPC: H04W48/14 ,  H04W72/02 ,  H04W74/0833

Abstract: Methods, systems, and devices for wireless communications are described. In a wireless communications system, a base station may support a flexible cell with a set of carriers including an anchor carrier and two or more non-anchor carriers. In some examples, a user equipment (UE) may select, from among the set of carriers and based on receiving an indication of the configuration, a carrier for transmission of a request for system information associated with the flexible cell. The UE may transmit the request for system information to the base station via the selected carrier. Additionally or alternatively, the UE may select a carrier for reception by the UE of an acknowledgement for the request for the system information, and the UE may receive the acknowledgement for the request for system information via the selected carrier.

公开(公告)号：US20240324025A1

公开(公告)日：2024-09-26

申请号：US18731211

申请日：2024-05-31

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/0833

CPC classification number: H04W74/0833

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). The PRACH repetitions may be transmitted in ROs in accordance with a first 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 second 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：US20240137253A1

公开(公告)日：2024-04-25

申请号：US18546705

申请日：2021-04-27

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/00 ,  H03M7/40

CPC classification number: H04L27/0012 ,  H03M7/4006

Abstract: Wireless communications systems and methods related to an efficient arithmetic coding based multiple composition distribution matcher (MCDM) are provided. A wireless communication device selects, based on a first value representing a sequence of bits, a first composition from a plurality of compositions. Each composition of the plurality of compositions includes a different modulation symbol distribution associated with a modulation scheme. The wireless communication device encodes, based on the first composition, the sequence of bits into a sequence of symbols using arithmetic coding. The wireless communication device transmits a communication signal including the sequence of symbols.