Patents by Inventor Danlu Zhang

Danlu Zhang 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).

  • Patent number: 12219398
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may monitor one or more first conditions pertaining to non-cellular communications between the UE and a non-cellular network while the UE is operating in a dual networking mode for steering, switching, or splitting traffic (e.g., an access traffic steering, switching, and splitting (ATSSS) mode) between the non-cellular network and a cellular network. The UE may predict an availability status of at least the non-cellular network based on at least one of the one or more first conditions. In some cases, the UE may determine whether to change dual networking modes based on the availability status and may communicate in accordance with the same or a different dual networking mode using at least one of the cellular network, the non-cellular network, or a combination thereof based on the prediction.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: February 4, 2025
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Dario Serafino Tonesi, Amer Catovic, Stefano Faccin, Waqar Zia, Peng Li
  • Patent number: 12212378
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a device may receive serving beam information associated with a plurality of wireless communication devices. The device may generate an interference model based at least in part on the serving beam information associated with the plurality of wireless communication devices, the interference model indicating locations of one or more clusters in a channel environment. The device may obtain, using the interference model, information associated with an interference prediction for a transmitting wireless communication device. The device may transmit the information associated with the interference prediction to the transmitting wireless communication device. Numerous other aspects are provided.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: January 28, 2025
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Marco Papaleo, Ozge Koymen, Junyi Li, Danlu Zhang
  • Patent number: 12213163
    Abstract: A method of wireless communication by a user equipment (UE) includes receiving, from a serving cell, information to assist the UE with interference cancellation of at least one neighbor cell. The method also includes performing interference cancellation based on the information. A method of wireless communication by a network device includes obtaining information to enable interference cancellation of a neighbor cell. The method also includes transmitting the information to assist a user equipment (UE) with interference cancellation of the neighbor cell.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: January 28, 2025
    Assignee: QUALCOMM Incorporated
    Inventors: Ming Yang, Kausik Ray Chaudhuri, Juan Montojo, Danlu Zhang
  • Publication number: 20250030462
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may communicate with a second network node using a line-of-sight (LOS) multiple input multiple output (MIMO) configuration at a frequency. The first network node may communicate, based at least in part on a multi-user MIMO (MU MIMO) mode, with a third network node using the LOS MIMO configuration and at the frequency, wherein the MU MIMO mode corresponds to an antenna system configuration of the rectangular antenna array, wherein the antenna system configuration includes at least one of an antenna assignment scheme, an antenna amplitude configuration, or an antenna phase configuration. Numerous other aspects are described.
    Type: Application
    Filed: March 1, 2022
    Publication date: January 23, 2025
    Inventors: Danlu ZHANG, Juergen CEZANNE, Bilal SADIQ, Abdelrahman Mohamed Ahmed Mohamed IBRAHIM, Meilong JIANG, Renqiu WANG, Tingfang JI, Yu ZHANG, Ashwin SAMPATH, Junyi LI
  • Publication number: 20250012888
    Abstract: Various methods and apparatus for supporting positioning of a user equipment (UE) in a wireless network are disclosed. In some embodiments, a wireless network node may be configured to define one or more groups of antennas associated with a wireless network node, each of the one or more groups of antennas grouped according to at least a phase-based parameter correlated with an electromagnetic characteristic of a plurality of antennas; send, to a network entity, data identifying the defined one or more groups of antennas; receive configuration data from the network entity, the configuration data identifying at least one of the one or more groups of antennas; and based on the configuration data, send or receive reference signals with the wireless network node using the identified at least one of the one or more groups of antennas, the reference signals configured to be used in the positioning of the UE.
    Type: Application
    Filed: November 23, 2022
    Publication date: January 9, 2025
    Inventors: Varun Amar REDDY, Alexandros MANOLAKOS, Weimin DUAN, Danlu ZHANG
  • Publication number: 20250016722
    Abstract: Different antenna components of a device cause different biases in calculating a location of a user equipment (UE) based on reference signals from another device (which may be sounding reference signals from the UE or positioning reference signals from a base station). A device is configured to use different subsets of antenna components to calculate a positioning measurement. With each of the antenna components associated with a bias in calculating the positioning measurement, each subset of antenna components is associated with a bias in calculating the positioning measurement. The device is configured to generate and report an angle error group (AEG) report that is associated with the positioning measurements calculated (such as an AEG report including positioning measurements and identifiers indicating the antenna components used). The AEG report is used by a location server to identify the antenna components to be used for UE positioning operations.
    Type: Application
    Filed: October 28, 2022
    Publication date: January 9, 2025
    Inventors: Weimin DUAN, Alexandros MANOLAKOS, Danlu ZHANG
  • Publication number: 20240413863
    Abstract: Methods, systems, and devices for wireless communication are described. A first wireless device may transmit one or more signals to a second wireless device using an antenna panel including antenna elements that are arranged in a hexagonal configuration. The signals may be transmitted using one or more directional beams for multiple-input multiple-output communications with the second wireless device, the directional beams generated based on the antenna elements in the hexagonal configuration. The first wireless device may receive a signal from the second wireless device, and in some cases, the first wireless device may transmit one or more reference signals via the one or more directional beams, the reference signals associated with a set of two or more antenna elements of the antenna panel of the first wireless device. The second wireless device may perform measurements of the reference signals and transmit a measurement report to the first wireless device.
    Type: Application
    Filed: December 30, 2021
    Publication date: December 12, 2024
    Inventors: Danlu ZHANG, Yu ZHANG, Min HUANG, Wei XI, Chao WEI, Hao XU, Allen Minh-Triet TRAN
  • Publication number: 20240405841
    Abstract: Methods, systems, and devices for wireless communications are described, including detection of whether a first wireless device is location within a near-field distance of a second wireless device. The first wireless device measures phases of reference signals received at first antenna array of the first antenna array from a second antenna array of the second wireless device. The first wireless device determines, based on the phases, the values of quadratic terms associated with an equation for calculating the distance between a first antenna of the first antenna array and the center of the first antenna array or for calculating the distance between a second antenna of the second antenna array and the center of the second antenna array. The first wireless device determines, based on the quadratic terms, whether the first wireless device is within the near-field distance of the second wireless device.
    Type: Application
    Filed: June 2, 2023
    Publication date: December 5, 2024
    Inventors: Danlu ZHANG, Vasanthan RAGHAVAN, Junyi LI
  • Publication number: 20240388332
    Abstract: A first device may transmit an indication of a base graph recommendation. A second device may receive the indication of the base graph recommendation. The second device may select a base graph from a plurality of base graphs based on the base graph recommendation. The second device may transmit an indication of the selected base graph from the plurality of base graphs after the selection of the indication of the base graph recommendation. The first device may receive the indication of the selected base graph from the plurality of base graphs after an output of the indication of the base graph recommendation. The second device may transmit a low density parity check (LDPC) coded transmission based on the selected base graph. The first device may receive the LDPC coded transmission based on the selected base graph.
    Type: Application
    Filed: July 30, 2024
    Publication date: November 21, 2024
    Inventors: Wei YANG, Jing JIANG, Danlu ZHANG, Gabi SARKIS, Runxin WANG, Hwan Joon KWON, Krishna Kiran MUKKAVILLI, Tingfang JI
  • Publication number: 20240380450
    Abstract: Methods, systems, and devices for wireless communications are described. A transmitted may use a closed loop precoder for line-of-sight (LOS) multiple-input multiple-output (MIMO) communications that uses information such as distance feedback or LOS MIMO channel state feedback. A closed loop precoder may be associated with less overhead than a precoder based on full channel knowledge, such as an SVD precoder. A receiver may estimate a channel based on channel state information reference signals transmitted by the transmitter and calculate a spectral efficiency for one or more precoders of a set of precoders associated with the channel for a LOS MIMO mode. The receiver may send feedback to the transmitter that indicates a selected precoder of the set of LOS MIMO precoders based on the calculated spectral efficiencies. The transmitter may precode messages using the reported closed loop precoder.
    Type: Application
    Filed: November 18, 2021
    Publication date: November 14, 2024
    Inventors: Abdelrahman Mohamed Ahmed Mohamed IBRAHIM, Juergen CEZANNE, Renqiu WANG, Danlu ZHANG, Naga BHUSHAN, Pinar SEN, Seyong PARK, Yu ZHANG, Muhammad Sayed Khairy ABDELGHAFFAR, Krishna Kiran MUKKAVILLI, Hwan Joon KWON, Tingfang JI
  • Publication number: 20240372269
    Abstract: An orbital angular momentum (OAM) antenna includes two or more concentric antenna arrays, each of the antenna arrays corresponding to one or more OAM orders and including a different respective set of antenna elements arranged at a different respective radius, a difference between respective radii of each pair of adjacent antenna arrays of the two or more concentric antenna arrays decreasing as antenna array indexes associated with the respective pair of adjacent antenna arrays increase, each of the antenna array indexes satisfying a threshold index condition.
    Type: Application
    Filed: July 13, 2021
    Publication date: November 7, 2024
    Inventors: Danlu ZHANG, Min HUANG, Hao XU
  • Publication number: 20240364387
    Abstract: Methods, systems, and devices for wireless communications are described. For instance, a base station may transmit, to a user equipment (UE), control signaling indicating a configuration for transmitting a reference signal for reconfigurable surface configuration. The base station may receive, via a reconfigurable surface, the reference signal based on transmitting the control signaling. For instance, the reconfigurable surface may reflect the reference signal to the base station using a first configuration of the reconfigurable surface. The base station may transmit, to a controller of the reconfigurable surface, a set of parameters for configuring the reconfigurable surface to a second configuration for communications between the base station and the UE based on receiving the reference signal via the reconfigurable surface.
    Type: Application
    Filed: September 17, 2021
    Publication date: October 31, 2024
    Inventors: Wei XI, Yu ZHANG, Chao WEI, Min HUANG, Hao XU, Danlu ZHANG
  • Publication number: 20240365296
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a first network device using a first communication technology, an indication of a resource mapping between a first set of time resources for downlink communications using the first communication technology and a second set of time resources for downlink communications using a second communication technology. The UE may determine a timing for receiving a first message from a second network device using the second communication technology based on receiving the indication of the resource mapping. The UE may receive, from the second network device, the first message using the second communication technology based on determining the timing. The UE may transmit, to the first network device, a second message including feedback information using the first communication technology based on receiving the first message from the second network device using the second communication technology.
    Type: Application
    Filed: January 21, 2022
    Publication date: October 31, 2024
    Inventors: Chao WEI, Danlu ZHANG, Hao XU
  • Patent number: 12130377
    Abstract: In some aspects, a radar device may receive a received signal comprising a reflected frequency modulated continuous wave (FMCW) radar signal and interference. The radar device may identify the reflected FMCW radar signal based at least in part on performing a phase based search procedure to facilitate removing the interference from the received signal. The radar device may perform an action based at least in part on a characteristic of the identified reflected FMCW radar signal. Numerous other aspects are described.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: October 29, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Xinjie Yang, Nan Zhang, Roberto Rimini, Danlu Zhang
  • Publication number: 20240356237
    Abstract: Methods, systems, and devices for wireless communications are described. A first wireless node may transmit, to a second wireless node, an indication of an orbital angular momentum (OAM) base value that is associated with one or more OAM modes. The OAM base value may correspond to a number of antenna elements of an antenna ring at the first wireless node, and for each of the one or more OAM modes. Based on the OAM base value, the first wireless node may communicate reference signaling according to the one or more OAM modes using the number of antenna elements of the antenna ring. The second wireless node may use a same number of antenna elements based on the indicated OAM base value.
    Type: Application
    Filed: October 29, 2021
    Publication date: October 24, 2024
    Inventors: Min Huang, Danlu Zhang, Chao Wei, Hao Xu
  • Publication number: 20240356217
    Abstract: Aspects of the disclosure relate to a controllable reflective surface (e.g., reconfigurable intelligent surfaces (RIS)) that reflects in multiple directions simultaneously. The controllable reflective surface may include an array of reflecting elements, each reflecting element comprising a radiating component and a phase-shifting component. The array of reflecting elements may be configured to receive control signal sets, where each control signal set configures the array of reflecting elements into a reflecting configuration having a plurality of subsets of the reflecting elements. Here, each subset of the plurality of subsets is configured to reflect radio frequency (RF) signals in a respective direction different from other ones of the first plurality of subsets. The reflecting configuration may define, for example, a block-wise configuration, and interlaced configuration, or a hybrid configuration of the plurality of subsets. Other aspects, embodiments, and features are also claimed and described.
    Type: Application
    Filed: October 6, 2021
    Publication date: October 24, 2024
    Inventors: Danlu Zhang, Yu Zhang, Tingfang Ji, Allen Minh-Triet Tran
  • Publication number: 20240356599
    Abstract: Methods, systems, and devices for wireless communications are described for closed-loop precoding for multiple-input multiple-output for transmitter circle arrays, for example uniform circular array panels. In some aspects, a base station including a transmitter circle array may steer a beam to a user equipment (UE) using codebooks, quantization rules, and feedback from the user equipment. In some aspects, the same transmitter circle array may be used for both backhaul communications with a device at a fixed location, for example using beams formed via discrete Fourier transform (DFT) vectors, and access communications with a UE via non-DFT beams coded using closed-loop precoding.
    Type: Application
    Filed: September 23, 2021
    Publication date: October 24, 2024
    Inventors: Min HUANG, Chao WEI, Hao XU, Danlu ZHANG
  • Publication number: 20240357703
    Abstract: Methods, systems, and devices for wireless communications are described. A first device may select, from multiple orbital angular momentum (OAM) modes, a set of one or more primary OAM modes and a set of one or more secondary OAM modes, where at least one primary OAM mode is activated periodically and at least one secondary OAM mode is activated based on a trigger. The first device may transmit, to a second device, a message indicating a configuration for the selected set of one or more primary OAM modes, the selected set of one or more secondary OAM modes, and discontinuous reception (DRX) parameters for each of the sets of OAM modes. The second device may monitor for a signal using a primary OAM mode using the DRX parameters for the set of primary OAM modes, and the second device may activate a second OAM mode based on receiving the signal.
    Type: Application
    Filed: October 14, 2021
    Publication date: October 24, 2024
    Inventors: Min Huang, Chao Wei, Hao Xu, Danlu Zhang
  • Publication number: 20240356600
    Abstract: Various aspects of the present disclosure generally relate to orbital angular momentum (OAM) multiplexing based communication. In some aspects, a transmitter of OAM multiplexing based communication may determine an azimuth mode configuration for transmitting a data stream, wherein the azimuth mode configuration indicates one or more azimuth modes. The transmitter may transmit, to a receiver of the OAM multiplexing based communication, the data stream based at least in part on the azimuth mode configuration. Numerous other aspects are described.
    Type: Application
    Filed: October 14, 2021
    Publication date: October 24, 2024
    Inventors: Danlu ZHANG, Min HUANG, Yu ZHANG, Hao XU, Jun MA
  • Publication number: 20240348293
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver of a holographic multiple input multiple output (MIMO) communication may receive, using at least one receive antenna element, a plurality of reference signals associated with at least one transmit antenna element of a transmitter of the holographic MIMO communication. The receiver may communicate using two-dimensional beams or three-dimensional beams based at least in part on a determination of a beam format associated with the plurality of reference signals. Numerous other aspects are described.
    Type: Application
    Filed: September 29, 2021
    Publication date: October 17, 2024
    Inventors: Danlu ZHANG, Yu ZHANG, Peter GAAL, Min HUANG, Wei XI, Chao WEI, Hao XU, Vasanthan RAGHAVAN, Junyi LI