Patents by Inventor Zhan Zhang

Zhan 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: 20220014246
    Abstract: A wireless communications system and a method therein for transmission of a downlink signal in a wireless communications network supporting beamforming. The system estimates uplink channel information for a radio link from a wireless device to a radio network node. Further, the system obtains downlink beamforming information related to the estimated uplink channel information from a machine learning unit. The machine learning unit comprises relationships between beamforming information and uplink channel information determined based on stored pairs of reported downlink beamforming information and measured uplink channel information. The obtained downlink beamforming information is applicable for the radio cell sector. Furthermore, the system transmits, towards the wireless device, a beamformed downlink signal using the obtained downlink beamforming information.
    Type: Application
    Filed: September 23, 2021
    Publication date: January 13, 2022
    Inventors: Huaisong Zhu, Hugo Tullberg, Zhan Zhang
  • Patent number: 11219052
    Abstract: According to the present disclosure, behaviors of User Equipment (UE) and base station (BS) pertinent to Scheduling Request (SR) and/or Buffer Status Report (BSR) as well as resource management in short Transmission Time Interval (sTTI) relevant scenarios are discussed. UE may firstly determine if the SR is triggered by a buffer status change of a delay-critical data which needs a sTTI. If so, UE will send the SR to BS on a first type of uplink control channel designed for sTTI. Otherwise, UE will send the SR to the base station on a second type of uplink control channel designed for legacy TTI.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: January 4, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Zhan Zhang, Cecilia Eklöf, Laetitia Falconetti, Robert Karlsson
  • Patent number: 11212040
    Abstract: Embodiments of the disclosure generally relate to data transmission feedback. A terminal device receives a data packet transmitted from one or more network devices of the plurality of network device and determine whether triggering a feedback based on one or more of the received data packet, the monitored network devices and a timer Y at the terminal device. Latency for feedback of data transmission can be reduced and reliability can be improved.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: December 28, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Huaisong Zhu, Qianxi Lu, Zhan Zhang
  • Patent number: 11206119
    Abstract: A method and device for code block grouping. It is determined that one or more code blocks of a transport block is/are mapped to one or more code block groups according to a service and/or an associated channel; therefore, resource efficiency may be improved, latency may be reduced and robustness may be increased for all kinds of services.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: December 21, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Zhan Zhang, Jinhua Liu, Shaohua Li
  • Publication number: 20210392667
    Abstract: A method in a terminal device for transmission to at least a first network device and a second network device over bundled Transmission Time Intervals (TTIs). The method comprises determining that a first TTI for transmission to the first network device overlaps a second TTI for transmission to the second network device based on a first Timing Advance (TA) value associated with the first network device and a second TA value associated with the second network device; and blanking a portion of the first TTI, such that the rest of the first TTI does not overlap the second TTI.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jianfeng WANG, Qianxi LU, Zhan ZHANG, Huaisong ZHU
  • Patent number: 11178676
    Abstract: A method performed by a first communication device (101) operating in a wireless communications network (100). The first communication device (101) obtains (301) a grant for an uplink transmission to a second communication device (102) operating in the 5 wireless communications network (100). The grant comprises a first indication of one or more first sets of parameters for transmission. The first communication device (101) selects (302) a second set of parameters for the uplink transmission based on: i) the indicated one or more first sets of parameters, and ii) one or more quality of service requirements of an information to be transmitted in the uplink transmission. The first 10 communication device (101) then initiates (304) sending the uplink transmission to the second communication device (102), based on the selected second set of parameters.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: November 16, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Huaisong Zhu, Jonas Fröberg Olsson, Caner Kilinc, Qianxi Lu, Jianfeng Wang, Zhan Zhang
  • Publication number: 20210345394
    Abstract: There is disclosed a network node for a Radio Access Network, the network node being adapted for communication utilizing a carrier aggregation comprising at least a first carrier and a second carrier. The network node is adapted for transmitting first downlink control information on the first carrier of the carrier aggregation, and second downlink control information on the second carrier of the carrier aggregation, wherein the first downlink control information and the second downlink control information pertain to transmission on the same uplink carrier.
    Type: Application
    Filed: July 13, 2021
    Publication date: November 4, 2021
    Inventors: Jinhua Liu, Shaohua Li, Zhan Zhang
  • Patent number: 11159214
    Abstract: A wireless communications system (10) and a method therein for transmission of a downlink signal in a wireless communications network (100) supporting beamforming. The system estimates uplink channel information for a radio link from a wireless device (120) to a radio network node (110). Further, the system obtains downlink beamforming information related to the estimated uplink channel information from a machine learning unit (300). The machine learning unit comprises relationships between beamforming information and uplink channel information determined based on stored pairs of reported downlink beamforming information and measured uplink channel information. The obtained downlink beamforming information is applicable for the radio cell sector. Furthermore, the system transmits, towards the wireless device (120), a beamformed downlink signal using the obtained downlink beamforming information.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: October 26, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Huaisong Zhu, Hugo Tullberg, Zhan Zhang
  • Patent number: 11160101
    Abstract: Embodiments of the disclosure generally relate to enhancement of downlink control channel. A network device maps control information to a resource region. The control information is associated with data to be transmitted at a first subframe of a first cell. The resource region crosses a plurality of subframes and/or a plurality of cells. Then, the network device transmits the control information on the resource region to a terminal device.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: October 26, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Qianxi Lu, Jianfeng Wang, Huaisong Zhu, Zhan Zhang
  • Publication number: 20210302470
    Abstract: The invention relates to a probe card (PC) for use with an automatic test equipment (ATE), wherein the probe card (PC) comprises a probe head (PH) on a first side thereof, and wherein the probe card (PC) is adapted to be attached to an interface (IF) and wherein the probe card (PC) comprises a plurality of contact pads on a second side in a region opposing at least a region of the interface (IF), arranged to contact a plurality of contacts of the interface (IF), and wherein the probe card (PC) comprises one or more coaxial connectors (CCPT) arranged to mate with one or more corresponding coaxial connectors (CCPT) of the interface (IF). The invention relates further to pogo tower (PT) for connecting a wafer probe interface (WPI) of an automatic test equipment with the probe card (PC).
    Type: Application
    Filed: October 30, 2020
    Publication date: September 30, 2021
    Inventors: José MOREIRA, Zhan ZHANG, Hubert WERKMANN, Fabio Pizza, Paolo MAZZUCCHELLI
  • Publication number: 20210287262
    Abstract: This disclosure describes a vehicle-motion-analysis system that can align axes for a provider device and a corresponding transportation vehicle based on the provider device's location and motion data as a basis for generating driving-event scores for particular driving events. In particular, the disclosed systems can generate axes-rotation parameters that align axes of a provider device with axes of a transportation vehicle. In addition, the disclosed systems can identify motion paths, motion patterns, or other driving behaviors that occur during particular driving events. Further, the disclosed systems can generate driving-event scores for such driving events and can customize a graphical user interface based on the driving-event scores to reflect a provider rating and/or a location rating.
    Type: Application
    Filed: March 16, 2020
    Publication date: September 16, 2021
    Inventors: Alya Abbott, Devjit Chakravarti, Alexander Wesley Contryman, Michael Jonathan DiCarlo, Julien van Hout, James Kevin Murphy, Renee Hei-kyung Park, Ashivni Shekhawat, Zhan Zhang
  • Patent number: 11115996
    Abstract: A terminal device for transmission to at least a first network device and a second network device over bundled Transmission Time Intervals (TTIs). A method comprises determining that a first TTI for transmission to the first network device overlaps a second TTI for transmission to the second network device based on a first Timing Advance (TA) value associated with the first network device and a second TA value associated with the second network device; and requesting from the first and second network devices a first and a second transmission grants, respectively, based on the first and second TA values, such that an order of the first and second transmission grants requested is based on values of the first and second TA values.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: September 7, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jianfeng Wang, Qianxi Lu, Zhan Zhang, Huaisong Zhu
  • Publication number: 20210266913
    Abstract: Embodiments of the present disclosure relate to methods and devices for uplink puncturing. In example embodiments, the terminal device obtains a first signal to be transmitted for a first service requiring a first latency. Then, the terminal device determines whether a resource block has been a shared one for the first service requiring a first latency or allocated by a network device for a second service requiring a second latency higher than the first latency. If it is determined that the resource block has been allocated for the second service, the terminal device selects a first set of resource elements based on a predefined pattern of resource elements. The first set of resource elements are discontinuously distributed in the allocated resource block. The terminal device transmits the first signal for the first service to the network device at the first set of resource elements.
    Type: Application
    Filed: May 13, 2021
    Publication date: August 26, 2021
    Inventors: Zhan Zhang, Shaohua Li, Jinhua Liu
  • Patent number: 11102804
    Abstract: There is disclosed a network node for a Radio Access Network, the network node (100) being adapted for communication utilising a carrier aggregation comprising at least a first carrier and a second carrier. The network node is adapted for transmitting first downlink control information on the first carrier of the carrier aggregation, and second downlink control information on the second carrier of the carrier aggregation, wherein the first downlink control information and the second downlink control information pertain to transmission on the same uplink carrier. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: August 24, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jinhua Liu, Shaohua Li, Zhan Zhang
  • Publication number: 20210256030
    Abstract: Provided is a method for ordering X-type variables having states to be measured in a dynamic uncertain causality graph (DUCG). The method comprises: step 1: determining, on the basis of a DUCG simplified using E(y) as a condition, a measurable X-type variable having a state to be measured, an index set thereof being S x(y), where y is a time series; step 2: if there is only one element in S x(y), ending ordering; step 3: calculating ranking importance Ii(y) for Xi(i?S x(y)); step 4: ordering ranking Xi(i?S x(y)) according to the ranking importance Ii(y), and performing state measurement on an X-type variable of i?S x(y) by referring to the ranking; and step 5: adding 1 to y, and repeating steps 1-5 until there is no X-type variable to be measured. The technical solution of the invention can quickly diagnose a cause of an object system abnormality at minimum cost, and effectively returns the object system to normal.
    Type: Application
    Filed: May 30, 2016
    Publication date: August 19, 2021
    Inventors: Qin ZHANG, Zhan ZHANG
  • Publication number: 20210235308
    Abstract: Various embodiments of the present disclosure provide a method for CSI reporting. The method comprises detecting a downlink transmission, and transmitting, in response to the detection of the downlink transmission, a channel state information (CSI) report in an uplink control resource configured for CSI reporting. According to the embodiments of the present disclosure, a timely and accurate CSI reporting can be provided.
    Type: Application
    Filed: July 26, 2019
    Publication date: July 29, 2021
    Inventors: Zhan Zhang, Gen Li, Jinhua Liu
  • Publication number: 20210234653
    Abstract: According to the present disclosure, behaviors of a Base Station (BS) and a User Equipment (UE) pertinent to Reference Signal (RS) transmissions are discussed. BS may configure RS corresponding to a set of antenna ports in two or more groups of Orthogonal Frequency Division Multiplexing (OFDM) symbols on a short Physical Downlink Sharing CHannel (sPDSCH), where subcarrier indices used for RS transmission are different between at least two groups of OFDM symbols. Then, BS may transmit the RS to UE. UE will receive RS and perform channel estimation based on the received RS.
    Type: Application
    Filed: April 12, 2021
    Publication date: July 29, 2021
    Inventors: Zhan Zhang, Majid Gerami, Niklas Andgart, Mårten Sundberg
  • Patent number: 11057779
    Abstract: Embodiments of the present disclosure provide methods, apparatuses and computer program for data transmission and reception in a wireless communication system. A method in a terminal device comprises: receiving a first indication of a first resource pool to be shared by a first service and a second service; receiving configuration information, the configuration information including a first configuration for transmitting data of the first service using a resource in the first resource pool and/or a second configuration for transmitting data of the second service using a resource in the first resource pool, the second configuration being different from the first configuration; and transmitting the data of the first service and/or the data of the second service based on the first indication and configuration information. Embodiments of the present disclosure may enable data transmission for a service in an efficient way, and/or satisfy QoS requirement for the service.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: July 6, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jinhua Liu, Shaohua Li, Zhan Zhang
  • Publication number: 20210195494
    Abstract: An access point of a wireless communication network serves a connection to a user equipment. The access point determines a plurality of target access points. Further, the access point sends a message to the user equipment. The message indicates the plurality of target access points and authorizes the user equipment to autonomously switch the connection to one or more of the target access points.
    Type: Application
    Filed: March 8, 2021
    Publication date: June 24, 2021
    Inventors: Zhan Zhang, Jinhua Liu
  • Publication number: 20210184797
    Abstract: A transmitting node determines data for a first service will be transmitted during a time period when data for a second service will be transmitted. The data for the first service requires lower latency than the data for the second service and the data for the first service includes an original set of data for the first service and at least one repetition of the original set of data for the first service. The transmitting node adjusts resources consumed by the data for the first service based on available transmission resources. During the time period the transmitting node then transmits the data for the first service using the adjusted resources while data for the second service is transmitted during the time period.
    Type: Application
    Filed: February 5, 2021
    Publication date: June 17, 2021
    Inventors: Zhenhua ZOU, Shehzad Ali ASHRAF, Yufei BLANKENSHIP, Caner KILINC, Zhan ZHANG