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.

公开(公告)号：US20240129934A1

公开(公告)日：2024-04-18

申请号：US18277369

申请日：2021-04-29

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Kangqi LIU ,  Hao XU

IPC: H04W72/25 ,  H04B7/185

CPC classification number: H04W72/25 ,  H04B7/18506

Abstract: The first UE may transmit to the second UE, via an SCI-2 message in a PSSCH, an indication of at least one of a 3D zone ID associated with the first UE or a 3D communication range associated with the first UE. The second UE may determine whether the second UE is in a communication range based on the received indication of the at least one of the 3D zone ID associated with the at least one first UE or the 3D communication range associated with the at least one first UE. The second UE may determine whether to transmit an ACK or a NACK based on whether the second UE is in the communication range. The second UE may transmit to the first UE an ACK or a NACK based on whether the at least one second UE is in a communication range.

公开(公告)号：US20240120986A1

公开(公告)日：2024-04-11

申请号：US18264916

申请日：2021-04-15

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Kangqi LIU ,  Hao XU

IPC: H04B7/08 ,  H04L5/00 ,  H04W72/25

CPC classification number: H04B7/086 ,  H04L5/0069 ,  H04W72/25

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive a message indicating geographic location information related to beamforming an air-to-air sidelink message via a sidelink channel. In some examples, a second UE may transmit the message or different as a message scheduling the sidelink message. The geographic directions to avoid when beamforming the sidelink message, or a combination thereof. The first UE may identify one or more precoding parameters based on the geographic location information. The first UE may transmit the air-to-air sidelink message to the second UE. The sidelink message may be precoded for transmission via a transmission beam using the one or more precoding parameters.

公开(公告)号：US20240014921A1

公开(公告)日：2024-01-11

申请号：US18252648

申请日：2021-01-19

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/00

CPC classification number: H04L1/0002 ,  H04L1/0041 ,  H04L1/0026

Abstract: Aspects of the present disclosure relate to selection of a coding rate for forward error correction coding associated with Fountain code encoding. According to some aspects, a wireless device may determine a plurality of block error rates associated with a channel between the wireless device and a second device, the plurality of block error rates being associated with a plurality of coding rates. The wireless device may select a coding rate from the plurality of coding rates for forward error correction coding based on the plurality of block error rates and the plurality of coding rates. The wireless device may encode a source data packet using a Fountain code to produce a codeword, and perform the forward error correction coding on the codeword based on the selected coding rate to produce a transmit signal. The wireless device may transmit the transmit signal to the second device.

公开(公告)号：US20230396355A1

公开(公告)日：2023-12-07

申请号：US18249922

申请日：2020-12-14

Applicant: QUALCOMM INCORPORATED

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

IPC: H04L1/00

CPC classification number: H04L1/0003 ,  H04L1/0061 ,  H04L1/0009

Abstract: Methods, systems, and devices for wireless communications are described. A rateless code may be used to generate n encoded packets based on a set of source packets. A modulation technique may be used to generate first symbol packets from the encoded packets. And a layered modulation technique may be used to generate coded symbol packets from the first symbol packets. The layered modulation technique may include generating a coded symbol packet from a group of first symbol packets. Different weights may be applied to the different first symbol packets included in the group of first symbol packets before the first symbol packets in the group are combined together. A receiving device may demodulate the transmitted coded symbol packets to reconstruct the group of first symbol packets, use the reconstructed group of first symbol packets to recover the encoded packets, and use the encoded packets to reconstruct the source packets.

公开(公告)号：US20230361913A1

公开(公告)日：2023-11-09

申请号：US18245144

申请日：2020-11-18

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/00

CPC classification number: H04L1/0042 ,  H04L1/0075

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a configuration indicating a set of encoding parameters corresponding to a constellation shaping encoding process. The UE may calculate a number of bits of a first subset of a source bit stream, and the first subset of the source bit stream may include or encompass an input to a distribution matcher. The UE may apply, to the first subset, a distribution matcher parameter based on the set of encoding parameters. The UE may calculate a number of bits of a second subset of the source bit stream, and the second subset of the source bit stream may be concatenated with an output bit stream of the distribution matcher as an input to a channel encoder. The UE may signal the source bit stream to the base station.

公开(公告)号：US20230361821A1

公开(公告)日：2023-11-09

申请号：US18246025

申请日：2020-11-25

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Yu ZHANG ,  Chenxi HAO ,  Kangqi LIU ,  Min HUANG ,  Rui HU ,  Hao XU ,  Wei XI

IPC: H04B7/0456 ,  H04B7/06

CPC classification number: H04B7/0486 ,  H04B7/0645

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a channel state information (CSI) configuration indicating a first feedback reporting periodicity for a dominant, or strong, spatial layer and a second feedback reporting periodicity for a non-dominant, or weak, spatial layer. The UE may transmit a first CSI report for at least the dominant spatial layer according to the first feedback reporting periodicity. The UE may transmit a second CSI report for the non-dominant spatial layer according to the second feedback reporting periodicity. In some cases, for aperiodic reporting, the UE may be triggered by downlink control information to report CSI for the dominant spatial layer. In some cases, the CSI configuration may indicate different codebooks for the dominant and non-dominant spatial layers.

公开(公告)号：US20230299882A1

公开(公告)日：2023-09-21

申请号：US17997652

申请日：2021-06-30

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Changlong XU ,  Kangqi LIU ,  Jian LI ,  Xipeng ZHU

IPC: H04L1/08 ,  H04L1/1867

CPC classification number: H04L1/08 ,  H04L1/1887

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for sending, from an upper layer at a transmitting device to a lower layer at the transmitting device, an indication by which the lower layer determines that a packet is to be transmitted as either an initial transmission or as a retransmission. The lower layer at the transmitting device may then determine a transmission process for transmitting the packet based on the indication, and the transmitting device may transmit the packet in accordance with the transmission process. Because the lower layer may identify whether the packet is to be transmitted as either the initial transmission or the retransmission, the lower layer may adapt the transmission process to improve the chances that the packet is received by a receiving device or to limit overhead.

公开(公告)号：US20230232402A1

公开(公告)日：2023-07-20

申请号：US18001214

申请日：2020-08-06

Applicant: QUALCOMM Incorporated

Inventor： Yu ZHANG ,  Hao XU ,  Chenxi HAO ,  Qiaoyu LI ,  Liangming WU ,  Min HUANG ,  Kangqi LIU ,  Chao WEI

IPC: H04W72/21 ,  H04W72/02

CPC classification number: H04W72/21 ,  H04W72/02

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment UE) may receive a channel state information (CSI) report configuration, wherein the CSI report configuration identifies a plurality of CSI report types. The UE may transmit a CSI report, associated with a first CSI report type of the plurality of CSI report types, with information indicating a second CSI report type of the plurality of CSI report types. Numerous other aspects are provided.

公开(公告)号：US20230145149A1

公开(公告)日：2023-05-11

申请号：US17916948

申请日：2020-07-10

Applicant: QUALCOMM INCORPORATED

Inventor： Kangqi LIU ,  Changlong XU ,  Liangming WU ,  Jian LI ,  Xipeng ZHU ,  Hao XU

IPC: H04W72/30 ,  H04L12/18 ,  H04W76/40 ,  H04W72/0446

CPC classification number: H04W72/30 ,  H04L12/189 ,  H04W76/40 ,  H04W72/0446 ,  H04L2001/0093

Abstract: Methods, systems, and devices for wireless communications are described. One method of dynamically mapping encoded packets may include a base station identifying a set of encoded packets from a set of source packets. The base station may map subsets of the encoded packets onto a first and a second set of resources using different coding rates. In some examples, the base station may schedule one or more resources from the second set of resources for receiving feedback from one or more user equipments (UEs). In some examples, the base station may identify a second set of encoded packets from a second set of source packets and may map the second set of encoded packets onto the second set of resources and a third set of resources. A UE may recover the first or second sets of source packets based on the encoded packets transmitted by the base station.