Patents by Inventor Kangqi LIU

Kangqi LIU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240121035
    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.
    Type: Application
    Filed: March 9, 2021
    Publication date: April 11, 2024
    Inventors: Kexin XIAO, Liangming WU, Changlong XU, Kangqi LIU, Jian LI, Hao XU, Ruiming ZHENG, Wei LIU
  • Publication number: 20240120986
    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.
    Type: Application
    Filed: April 15, 2021
    Publication date: April 11, 2024
    Inventors: Qiaoyu LI, Kangqi LIU, Hao XU
  • Publication number: 20240106565
    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.
    Type: Application
    Filed: February 10, 2021
    Publication date: March 28, 2024
    Inventors: Kangqi LIU, Ruiming ZHENG, Changlong XU, Liangming WU, Kexin XIAO, Jian LI, Hao XU, Wei LIU
  • Publication number: 20240088980
    Abstract: Certain aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for beam determination, multi-user transmission, and channel state variance information (CSVI) reporting in a holographic multiple input multiple output (MIMO) system.
    Type: Application
    Filed: March 26, 2021
    Publication date: March 14, 2024
    Inventors: Min HUANG, Wei XI, Chao WEI, Yu ZHANG, Hao XU, Chenxi HAO, Rui HU, Liangming WU, Kangqi LIU, Qiaoyu LI, Jing DAI, Changlong XU
  • Patent number: 11909470
    Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit an encoded transmission via a broadcast to multiple user equipment (UE). Subsequently, the multiple UEs may transmit assistance information to the base station based on attempting to decode the broadcasted encoded transmission. If the decoding is unsuccessful for at least one UE, the base station may then transmit an additional encoded transmission via a unicast or multicast message to the UEs that were unsuccessful. Additionally, the base station may transmit configuration information for the multiple UEs to receive the encoded transmissions and to transmit the assistance information. For example, the configuration information may include portion information for how long the encoded transmission is transmitted via the broadcast, via the unicast, when to transmit the assistance information, etc. In some cases, the configuration information may be based on UE metrics of the multiple UEs.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: February 20, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Liangming Wu, Kangqi Liu, Changlong Xu, Jian Li, Hao Xu
  • Publication number: 20240048430
    Abstract: Aspects of the disclosure relate to wireless communication utilizing a modulation and coding scheme that selectively or dynamically applies probabilistically-shaped coding (PCS) to modulate a transmitted waveform. A communication device may determine whether to apply PCS. If PCS is to be applied, the device can encode the message based on a systematic code; and if PCS is not to be applied, the device can encode the message based on a non-systematic code.
    Type: Application
    Filed: March 5, 2021
    Publication date: February 8, 2024
    Inventors: Liangming Wu, Changlong Xu, Kangqi Liu, Jian Li, Ruiming Zheng, Hao Xu, Ori Shental
  • Publication number: 20240048287
    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.
    Type: Application
    Filed: February 10, 2021
    Publication date: February 8, 2024
    Inventors: Kangqi LIU, Ruiming ZHENG, Changlong XU, Liangming WU, Kexin XIAO, Jian LI, Hao XU, Wei LIU
  • Publication number: 20240048209
    Abstract: Methods, systems, and devices for wireless communications are described. A receiving device may receive, from a transmitting device, a configuration indicating a set of orbital angular momentum (OAM) modes for joint reporting, where at least one of the set of OAM modes is associated with transmission via two or more of a plurality of sets of antennas arranged in a set of concentric circular arrays. The receiving device may transmit, to the transmitting device, a report indicating precoding information for each of at least a subset of the set of OAM modes, where the precoding information includes one or more first parameters common to the set of OAM modes and one or more second parameters for respective ones of the at least the subset of the set of OAM modes.
    Type: Application
    Filed: March 4, 2022
    Publication date: February 8, 2024
    Inventors: Min HUANG, Yu ZHANG, Chao WEI, Wei XI, Rui HU, Kangqi LIU, Chenxi HAO, Liangming WU, Jing DAI, Hao XU, Wanshi CHEN, Danlu ZHANG
  • Publication number: 20240023139
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, encoded packets that are encoded using network coding. The encoded packets may be associated with source packets that represent a data set. The UE may attempt to recover the source packets from the encoded packets received from the base station. Upon failing to recover the source packets, the UE may transmit, over a sidelink channel, a message requesting sidelink assistance in recovering the source packets.
    Type: Application
    Filed: February 2, 2021
    Publication date: January 18, 2024
    Inventors: Kangqi LIU, Ruiming ZHENG, Changlong XU, Liangming WU, Jian LI, Kexin XIAO, Hao XU, Wei LIU
  • Publication number: 20240014921
    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.
    Type: Application
    Filed: January 19, 2021
    Publication date: January 11, 2024
    Inventors: Jian LI, Changlong XU, Kangqi LIU, Liangming WU, Hao XU
  • Publication number: 20240007226
    Abstract: Aspects of the disclosure relate to wireless communication with a waveform configured according to probabilistic constellation shaping in connection with modulation. A wireless transmission device may determine a sequence of amplitude symbols from a sequence of information bits using a distribution matcher (DM) configured for probabilistic amplitude shaping. The device may further apply error correction coding to encode an information block corresponding to at least a portion of the sequence of amplitude symbols. And the device may generate a sequence of output symbols for transmission based on the encoded information block. In various examples, the device may apply interleaving to one or more of the sequence of amplitude symbols, the information block, the encoded information block, or a combination of the sequence of amplitude symbols and the encoded information block, for the generating of the sequence of output symbols. Other aspects, embodiments, and features are also claimed and described.
    Type: Application
    Filed: January 13, 2021
    Publication date: January 4, 2024
    Inventors: Liangming Wu, Kexin Xiao, Changlong Xu, Jian Li, Kangqi Liu, Ruiming Zheng, Ori Shental, Hao Xu, Thomas Joseph Richardson
  • Publication number: 20230403123
    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.
    Type: Application
    Filed: November 18, 2020
    Publication date: December 14, 2023
    Inventors: Liangming WU, Changlong XU, Jian LI, Kangqi LIU, Kexin XIAO, Hao XU
  • Publication number: 20230396355
    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.
    Type: Application
    Filed: December 14, 2020
    Publication date: December 7, 2023
    Inventors: Kangqi LIU, Liangming WU, Changlong XU, Jian LI, Hao XU, Ruiming ZHENG
  • Publication number: 20230361913
    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.
    Type: Application
    Filed: November 18, 2020
    Publication date: November 9, 2023
    Inventors: Liangming WU, Changlong XU, Jian LI, Kangqi LIU, Kexin XIAO, Hao XU
  • Publication number: 20230361821
    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.
    Type: Application
    Filed: November 25, 2020
    Publication date: November 9, 2023
    Inventors: Liangming WU, Yu ZHANG, Chenxi HAO, Kangqi LIU, Min HUANG, Rui HU, Hao XU, Wei XI
  • Patent number: 11811475
    Abstract: A method and an access network node are disclosed for beam control. According to an embodiment, the access network node determines first spatial domain information of a channel between a first terminal device and the access network node, based on second spatial domain information of the channel estimated by uplink signals received previously from the first terminal device at multiple time points. The access network node determines beamforming weights for the first terminal device based on the first spatial domain information.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: November 7, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Kangqi Liu, Yipeng Zhang, Huaisong Zhu
  • Publication number: 20230344547
    Abstract: Aspects described herein relate to encoding wireless communications using feedback from receiving devices to achieve an adaptive coding rate, which can include generating, for a set of source symbols representing data to be transmitted in a broadcast channel, a set of encoded symbols for transmitting in the broadcast channel, transmitting a first number of the set of encoded symbols over the broadcast channel, requesting, based on transmitting the first number of the set of encoded symbols, feedback from a set of user equipment (UEs), and determining, based at least in part on the feedback, whether to continue transmitting a second number of the set of encoded symbols or begin transmitting a new set of encoded symbols representing new data to be transmitted in the broadcast channel.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 26, 2023
    Inventors: Kangqi LIU, Jian LI, Changlong XU, Liangming WU, Hao XU
  • Publication number: 20230328568
    Abstract: Aspects of the disclosure relate to the generation of channel state reports. A base station transmits a reference signal over a plurality of ports. A user equipment (UE) receives the reference signal and measure amplitudes of the reference signal over a plurality of ports. A first subgroup of the plurality of ports and a second subgroup of the plurality of ports are determined. In embodiments, the port groupings may be determined by the base station, which transmits an identification of the groupings to the user equipment. Alternatively, the UE may determine the port groupings. After determining the port groupings, the UE separately quantizes and normalizes the measured amplitude values in each port grouping. The UE may also separately quantize and normalize the phase measurements in each port groups. The UE generates a channel state report based on the normalized and quantized amplitude and phase values.
    Type: Application
    Filed: September 11, 2020
    Publication date: October 12, 2023
    Inventors: Liangming Wu, Chenxi Hao, Yu Zhang, Min Huang, Qiaoyu Li, Rui Hu, Kangqi Liu, Wei Xi, Hao Xu, Wanshi Chen
  • Publication number: 20230299882
    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.
    Type: Application
    Filed: June 30, 2021
    Publication date: September 21, 2023
    Inventors: Liangming WU, Changlong XU, Kangqi LIU, Jian LI, Xipeng ZHU
  • Publication number: 20230291420
    Abstract: Methods, systems, and devices for wireless communications are described. An encoding device (e.g., a base station or user equipment (UE)) may communicate, with a decoding device (e.g., a UE or base station), an indication of a set of encoding symbol identifiers via a control channel. The encoding device may transmit a set of packets associated with a rateless code via a data channel, where each of the set of packets includes an encoding symbol. The decoding device may decode the set of encoding symbols based on the set of encoding symbol identifiers.
    Type: Application
    Filed: June 11, 2020
    Publication date: September 14, 2023
    Inventors: Kangqi LIU, Jian LI, Changlong XU, Liangming WU, Hao XU