Patents by Inventor Xinlin ZHANG

Xinlin 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).

  • Publication number: 20240106546
    Abstract: A communication method, applied to a master device, includes: determining, according to the number of controlled devices and a preset time slot length, detection cycles and detection timing of various controlled devices in a detection cycle; receiving, in a time slot in the detection cycle, an ultrasonic sweep signal sent by the controlled device; and determining, according to the detection timing and the ultrasonic sweep signal, a detection result of the master device and a controlled device.
    Type: Application
    Filed: December 23, 2022
    Publication date: March 28, 2024
    Inventors: Yong ZHANG, Xinlin YI, Ningzhi ZHU, Runyu SHI, Kai WANG
  • Publication number: 20240088954
    Abstract: A method for reducing the number of beams required per symbol. The method is performed by a base station (gNB). The method includes transmitting reference signals (RSs) and receiving a report from a UE (302), the report identifying a matrix. The method also includes using the identified matrix to transmit data to the UE or schedule the UE. The matrix identified by the UE is equal to (I) and Wps is a port selection matrix and (II) denotes the Kronecker product.
    Type: Application
    Filed: December 16, 2021
    Publication date: March 14, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik ATHLEY, Xinlin ZHANG, Mattias FRENNE
  • Publication number: 20240063854
    Abstract: A method (700) for precoding a signal. The method includes determining (s702), based on uplink, UL, measurements, a spatial domain (SD) precoding vector and a frequency domain (FD) precoding vector for a downlink (DL) transmission of the signal. The method also includes applying (s704) the FD precoding vector to the signal over subcarriers for carrying the signal, thus producing a modified signal. The method further includes applying (s706) the SD precoding vector to the modified signal to produce a precoded signal, wherein the SD precoding vector is common for all said subcarriers in one symbol.
    Type: Application
    Filed: November 18, 2021
    Publication date: February 22, 2024
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik ATHLEY, Xinlin ZHANG, Mattias FRENNE
  • Publication number: 20240007164
    Abstract: A method, network node and wireless device for reducing overhead of New Radio (NR) Type II channel state information (CSI) feedback using angle and delay reciprocity are disclosed. According to one aspect, a method in a wireless device (WD) includes receiving a configuration of CSI report setting that indicates frequency domain basis vectors from a discrete Fourier transform, CSI reference signal (RS) ports and a subset of pairs of spatial domain and frequency domain vectors for the NCSI-RS CSI-RS ports. The method also includes determining linear combination coefficients corresponding to the selected frequency domain basis vectors and the selected subset of CSI-RS ports, determining linear combination coefficients corresponding to the selected frequency domain basis vectors and the selected subset of pairs of vectors in the spatial domain and the frequency domain.
    Type: Application
    Filed: December 28, 2021
    Publication date: January 4, 2024
    Inventors: Xinlin ZHANG, Siva MURUGANATHAN, Mattias FRENNE, Fredrik ATHLEY, Shiwei GAO
  • Patent number: 11855921
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises obtaining channel information. The method comprises determining, for at least one given precoder in a codebook, an uplink reference signal to physical antenna port mapping based on the channel information. The method comprises transmitting uplink reference signals in the physical antenna ports according to the determined mapping.
    Type: Grant
    Filed: August 3, 2022
    Date of Patent: December 26, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sven Petersson, Fredrik Athley, Andreas Nilsson, Roy Timo, Xinlin Zhang
  • Publication number: 20230396387
    Abstract: According to certain embodiments, a method performed by a wireless device comprises determining a configuration for sounding reference signal (SRS) transmission. The configuration is determined at least in part based on information received from a network node. The method further comprises performing the SRS transmission according to the configuration.
    Type: Application
    Filed: October 22, 2021
    Publication date: December 7, 2023
    Inventors: Robert Mark Harrison, Mattias Frenne, Andreas Nilsson, Xinlin Zhang, Fredrik Athley, Sven Jacobsson, Eleftherios Karipidis
  • Publication number: 20230291441
    Abstract: Methods for reporting Channel State Information (CSI) from a wireless device to a radio network node are provided. More specifically, the wireless device receives an indication indicating a subset of Frequency Domain (FD) basis vectors among a full set of FD basis vectors from the radio network node. Accordingly, the wireless device computes a CSI corresponding to an enhanced type II port selection codebook using the indicated subset of FD basis vectors and report the CSI to the radio network node. The methods disclosed herein make it possible to reduce complexity and signaling overheat for reporting CSI based on the selected subset of FD basis vectors.
    Type: Application
    Filed: July 9, 2021
    Publication date: September 14, 2023
    Inventors: Siva Muruganathan, Fredrik Athley, Mattias Frenne, Shiwei Gao, Helka-Liina Määttänen, Xinlin Zhang
  • Publication number: 20230145057
    Abstract: A method (800) performed by a base station (e.g., gNB). The method includes selecting (s802) a set of frequency domain (FD) basis vectors. The method also includes transmitting (s804) to a UE information identifying the selected FD basis vectors.
    Type: Application
    Filed: March 15, 2021
    Publication date: May 11, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Xinlin ZHANG, Siva MURUGANATHAN, Shiwei GAO, Fredrik ATHLEY, Mattias FRENNE
  • Publication number: 20230027476
    Abstract: There is provided mechanisms for adaptive cell-shaping in a cellular network in which a group of radio access network nodes provide network access. A method is performed by a network node. The method comprises obtaining an indication of combined network performance degradation in a region in which a first radio access network node in the group of radio access network nodes provides network access and increased need for network access for prioritized service and/or prioritized subscribers in this region. The method comprises initiating adjustment of cell-degradation shaping parameters of at least one radio access network node in the group of radio access network nodes. Network access for the prioritized service and/or prioritized subscribers in the region is maintained by this at least one radio access network node in the group of radio access network nodes.
    Type: Application
    Filed: December 18, 2019
    Publication date: January 26, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jingya LI, Andreas NILSSON, Joakim AKESSON, Daniel GULDBRAND, Sven PETERSON, Xinlin ZHANG, Fredrik ATHLEY
  • Publication number: 20220376860
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises obtaining channel information. The method comprises determining, for at least one given precoder in a codebook, an uplink reference signal to physical antenna port mapping based on the channel information. The method comprises transmitting uplink reference signals in the physical antenna ports according to the determined mapping.
    Type: Application
    Filed: August 3, 2022
    Publication date: November 24, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sven PETERSSON, Fredrik ATHLEY, Andreas NILSSON, Roy TIMO, Xinlin ZHANG
  • Patent number: 11411695
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises obtaining channel information. The method comprises determining, for at least one given precoder in a codebook, an uplink reference signal to physical antenna port mapping based on the channel information. The method comprises transmitting uplink reference signals in the physical antenna ports according to the determined mapping.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: August 9, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sven Petersson, Fredrik Athley, Andreas Nilsson, Roy Timo, Xinlin Zhang
  • Publication number: 20220248419
    Abstract: There is provided mechanisms for interference handling. A method is performed by a radio access network node. The method comprises obtaining an indication of interference in a time/frequency interval. The method comprises querying a neighbouring radio access network node about scheduling in the time/frequency interval of uplink wireless transmission from any terminal device served by the neighbouring radio access network node. The method comprises receiving a response from the neighbouring radio access network node. The response comprises information identifying uplink reference signal resources/ports, and their scheduling, as to be used by the terminal device scheduled in the time/frequency interval.
    Type: Application
    Filed: July 9, 2019
    Publication date: August 4, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andreas NILSSON, Sven PETERSSON, Fredrik ATHLEY, Roy TIMO, Xinlin ZHANG
  • Publication number: 20220166464
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises creating a virtual antenna port for, and applied over, at least two of the physical antenna ports. The method comprises transmitting, in the virtual antenna port, as many uplink reference signals as there are physical antenna ports.
    Type: Application
    Filed: October 1, 2021
    Publication date: May 26, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sven PETERSSON, Fredrik ATHLEY, Andreas NILSSON, Roy TIMO, Xinlin ZHANG
  • Publication number: 20210359805
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises obtaining channel information. The method comprises determining, for at least one given precoder in a codebook, an uplink reference signal to physical antenna port mapping based on the channel information. The method comprises transmitting uplink reference signals in the physical antenna ports according to the determined mapping.
    Type: Application
    Filed: April 29, 2019
    Publication date: November 18, 2021
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sven PETERSSON, Fredrik ATHLEY, Andreas NILSSON, Roy TIMO, Xinlin ZHANG
  • Patent number: 11139870
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device is configured for codebook based precoding. The terminal device comprises at least two physical antenna ports. The method comprises transmitting, in all physical antenna port, as many uplink reference signals as there are physical antenna ports in total.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: October 5, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sven Petersson, Fredrik Athley, Andreas Nilsson, Roy Timo, Xinlin Zhang
  • Patent number: 11139864
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises creating a virtual antenna port for, and applied over, at least two of the physical antenna ports. The method comprises transmitting, in the virtual antenna port, as many uplink reference signals as there are physical antenna ports.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: October 5, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sven Petersson, Fredrik Athley, Andreas Nilsson, Roy Timo, Xinlin Zhang
  • Patent number: 11012129
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. Each physical antenna port is fed by its own power amplifier. The method comprises transmitting, in only the physical antenna port is fed by the power amplifier configured for highest total output power of all the power amplifiers, as many uplink reference signals as there are physical antenna ports in total.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: May 18, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sven Petersson, Fredrik Athley, Andreas Nilsson, Roy Timo, Xinlin Zhang
  • Publication number: 20200395981
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises creating a virtual antenna port for, and applied over, at least two of the physical antenna ports. The method comprises transmitting, in the virtual antenna port, as many uplink reference signals as there are physical antenna ports.
    Type: Application
    Filed: February 19, 2019
    Publication date: December 17, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sven PETERSSON, Fredrik ATHLEY, Andreas NILSSON, Roy TIMO, Xinlin ZHANG
  • Publication number: 20200343947
    Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. Each physical antenna port is fed by its own power amplifier. The method comprises transmitting, in only the physical antenna port is fed by the power amplifier configured for highest total output power of all the power amplifiers, as many uplink reference signals as there are physical antenna ports in total.
    Type: Application
    Filed: April 29, 2019
    Publication date: October 29, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sven PETERSSON, Fredrik ATHLEY, Andreas NILSSON, Roy TIMO, Xinlin ZHANG