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).

  • METHODS FOR RANDOM ACCESS IN RADIO NODES AND USER EQUIPMENT
    Publication number: 20190373638
    Abstract: The present disclosure relates to a method used in a radio node and the associated radio node. The method comprises: obtaining a network geometry of a User Equipment (UE) served by the radio node with respect to a coverage served by the radio node; determining a carrier sensing threshold for the UE based on the network geometry, the carrier sensing threshold for use in Listen-Before-Talk (LBT) measurement over a radio frequency band applicable for transmitting data to the UE; and applying the carrier sensing threshold in the LBT measurement. The present disclosure also relates to a method used in a UE and the associated UE, and to a method used in a radio node and the associated radio node.
    Type: Application
    Filed: August 14, 2019
    Publication date: December 5, 2019
    Inventors: Zhan ZHANG, Jinhua LIU, Virgile GARCIA
  • Method and device for performing beamforming
    Patent number: 10499399
    Abstract: A scheme to perform beamforming in a wireless communication network. A method implemented by a first device in the wireless communication network provides for determining a target beam based on a plurality of predefined beams for data transmission to a second device performing discontinuous reception. The data is then transmitted over the target beam to the second device in an active duration of the second device. In this way, beam mismatching may be mitigated and transmission quality in the wireless communication network may be improved.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: December 3, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jinhua Liu, Zhan Zhang
  • Methods and Devices for Transmitting/Receiving Scheduling Commands
    Publication number: 20190364587
    Abstract: The present disclosure provides a method (200) in an access device for transmitting scheduling commands. The method (200) includes: transmitting (210) a scheduling command for scheduling a downlink data transmission in a first subframe where the downlink data transmission occurs; and transmitting (220) a replica of the scheduling command in each of one or more further subframes different from the first subframe.
    Type: Application
    Filed: November 23, 2017
    Publication date: November 28, 2019
    Inventors: Huaisong ZHU, Qianxi LU, Zhan ZHANG, Jianfeng WANG
  • Method and device for determining uplink control channel
    Patent number: 10492182
    Abstract: Embodiments of the disclosure generally relate to determination of a UL control channel. A device selects, from candidate UL control channel categories, a target UL control channel category based on information about traffic between a network device and a terminal device. The candidate UL control channel categories at least include a first UL control channel category for high requirement traffic and a second UL control channel category for low requirement traffic. Then, the device determines a UL control channel of the target UL control channel category for the terminal device.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: November 26, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jinhua Liu, Shaohua Li, Zhan Zhang
  • METHOD AND DEVICE FOR TRANSMITTING DOWNLINK CONTROL INFORMATION
    Publication number: 20190357182
    Abstract: Embodiments of the disclosure generally relate to transmission of downlink control channel A network device determines downlink control information associated with a resource region allocated to one or more terminal devices. The downlink control information includes a plurality of candidate resource sets for data transmission to the terminal devices. The network device transmits the downlink control information to the terminal devices to enable the terminal devices to perform blind detection of data transmitted on the resource region based on the downlink control information.
    Type: Application
    Filed: January 4, 2018
    Publication date: November 21, 2019
    Inventors: Jinhua LIU, Shaohua LI, Zhan ZHANG
  • PUNCTURE BUNDLING OF DATA FOR A FIRST SERVICE IN A TRANSMISSION OF A SECOND SERVICE
    Publication number: 20190349136
    Abstract: A transmitting node can puncture bundles of data for a first service in a transmission for a second service. The first service has lower latency requirements than the second service. The transmitting node determines data for a first service will be transmitted during a time period when data for a second service will be transmitted, and determines transmission or reception conditions. Based on the determined transmission or reception conditions, the transmitting node determines to adjust the transmission of the first service. The transmitting node then transmits during the time period the data for the first service while data for the second service is transmitted during the time period, wherein the transmission 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.
    Type: Application
    Filed: March 19, 2018
    Publication date: November 14, 2019
    Inventors: Caner KILINC, Shehzad Ali ASHRAF, Yufei BLANKENSHIP, Zhan ZHANG, Zhenhua ZOU
  • METHOD FOR TRANSMITTING REFERENCE SIGNAL
    Publication number: 20190312695
    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: May 2, 2018
    Publication date: October 10, 2019
    Inventors: Zhan Zhang, Majid Gerami, Niklas Andgart, Mårten Sundberg
  • CONFIGURING PUNCTURE BUNDLES OF DATA FOR A FIRST SERVICE IN A TRANSMISSION OF A SECOND SERVICE
    Publication number: 20190296861
    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: March 19, 2018
    Publication date: September 26, 2019
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Zhenhua ZOU, Shehzad Ali ASHRAF, Yufei BLANKENSHIP, Caner KILINC, Zhan ZHANG
  • Methods for random access in radio nodes and user equipment
    Patent number: 10425965
    Abstract: The present disclosure relates to a method used in a radio node and the associated radio node. The method comprises: obtaining a network geometry of a User Equipment (UE) served by the radio node with respect to a coverage served by the radio node; determining a carrier sensing threshold for the UE based on the network geometry, the carrier sensing threshold for use in Listen-Before-Talk (LBT) measurement over a radio frequency band applicable for transmitting data to the UE; and applying the carrier sensing threshold in the LBT measurement. The present disclosure also relates to a method used in a UE and the associated UE, and to a method used in a radio node and the associated radio node.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: September 24, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Zhan Zhang, Jinhua Liu, Virgile Garcia
  • METHOD AND DEVICE FOR ENHANCING DOWNLINK CONTROL CHANNEL
    Publication number: 20190281620
    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: Application
    Filed: November 24, 2017
    Publication date: September 12, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Qianxi LU, Jianfeng WANG, Huaisong ZHU, Zhan ZHANG
  • Methods and arrangements for communication in ultra-reliable and low-latency communications (URLLC)
    Patent number: 10412628
    Abstract: Different Transmission Block Size/Modulation and Coding Scheme (TBS/MCS) mapping tables, especially different TBS/MCS mapping table sets, are used for Ultra-Reliable and Low-Latency Communications (URLLC) traffic and non-URLLC traffic. A TBS/MCS mapping table for URLLC is selected by a network node, upon determination of traffic type as URLLC, and informed to a UE. The informing can be a TBS/MCS mapping table index or a scaling factor. After receiving the information of TBS/MCS mapping table selection, the UE identifies the selected TBS/MCS mapping table from its TBS/MCS mapping table set for URLLC, or generates a new TBS/MCS mapping table based on the scaling factor and a corresponding TBS/MCS mapping table.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: September 10, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Zhan Zhang, Shaohua Li, Jinhua Liu
  • METHODS AND DEVICES FOR DATA RETRANSMISSION
    Publication number: 20190273581
    Abstract: Embodiments of the present disclosure relate to methods and devices for data retransmission. In example embodiments, a method implemented in a first device is provided. According to the method, a RLC packet to a second device is transmitted on a RLC layer. It is determined whether an ACK feedback for the RLC packet is received from the second device during a predetermined RLC retransmission period. In response to missing the ACK feedback during the RLC retransmission period, the RLC packet is retransmitted to the second device on the RLC layer, regardless whether a NACK feedback for the previously transmitted RLC packet is received from the second device.
    Type: Application
    Filed: November 3, 2017
    Publication date: September 5, 2019
    Inventors: Huaisong Zhu, Qianxi Lu, Zhan Zhang
  • Methods used in user equipment and associated UES
    Patent number: 10405367
    Abstract: The present disclosure relates to a method used in a User Equipment (UE) for transmitting data to a network side via at least a first and a second connection, and the associated UE. The method comprises: comparing a first number, M, of Packet Data Convergence Protocol (PDCP) Packet Data Units (PDUs) that have been successfully transmitted via the first connection with a second number, N, of PDCP PDUs that have been successfully transmitted via the second connection; and if M is larger than N by a predetermined threshold number, S, of PDCP PDUs, refraining from transmitting S PDCP PDUs to be transmitted following the N PDCP PDUs in the data via the second connection.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: September 3, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Huaisong Zhu, Qianxi Lu, Zhan Zhang
  • Network Node and Method in a Wireless Communications Network
    Publication number: 20190260546
    Abstract: A method performed by a network node (110) for deciding a feedback option of a message sent between the network node (110) and a User Equipment, UE, 120 in a wireless communication network (100) is provided. The message comprises a first data, which is punctured by a second data. The first data is sent in a slot of a radio resource. The second data is sent a mini-slot of the radio resource. The mini-slot is smaller than the slot. The network node (110) decides (401) a feedback option for feedback that is to be sent to the sender of the message. The deciding is based on any one or more out of: slot control resource capacity, mini-slot control resource capacity and requirements of the radio bearer.
    Type: Application
    Filed: January 26, 2018
    Publication date: August 22, 2019
    Inventors: Caner Kilinc, Yufei Blankenship, Zhan Zhang, Zhenhua Zou
  • Methods and radio network nodes for measuring interference
    Patent number: 10382153
    Abstract: A first radio network node for measuring interference between the first radio network node and a second radio network node obtains configuration information that indicates which subframe is a flexible subframe in which a reference signal for measurement of the interference is to be transmitted by the second radio network node. The first radio network node determines whether to configure the flexible subframe as an uplink subframe based on a necessity of the measuring of interference between the first radio network node and the second radio network node. The first radio network node configures the flexible subframe as an uplink subframe when the measuring of interference is needed, and receives the reference signal for measurement of the interference from the second radio network node in the uplink subframe.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: August 13, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Shaohua Li, Zhiheng Guo, Jinhua Liu, Xinghua Song, Zhan Zhang
  • METHODS AND DEVICES FOR UPLINK PUNCTURING TRANSMISSION
    Publication number: 20190230670
    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: January 23, 2018
    Publication date: July 25, 2019
    Inventors: Zhan Zhang, Shaohua Li, Jinhua Liu
  • Methods and Devices for Reference Signal Transmission and Measurement
    Publication number: 20190223065
    Abstract: Embodiments of the present disclosure relate to methods and devices for reference signal transmission and measurement. In example embodiments, according to a method implemented in a network device is provided, a report related to a measurement of a first reference signal is received from a terminal device. The first reference signal has been sent from the network device to the terminal device according to a first periodicity. Then an indication of a second periodicity for receiving a second reference signal is sent to the terminal device based on the report. The second reference signal is associated with the first reference signal.
    Type: Application
    Filed: September 29, 2017
    Publication date: July 18, 2019
    Inventors: Qianxi Lu, Jianfeng Wang, Zhan Zhang, Huaisong Zhu
  • Methods and Apparatus in a Wireless Communications Network
    Publication number: 20190222474
    Abstract: There is provided a method in a user equipment for a wireless communications network, comprising: receiving a configuration message from a base station for the wireless communications network, the configuration message indicating that data to be transmitted between the user equipment and the wireless communications network is to be duplicated; and responsive to receipt of the configuration message, transmitting a first data unit and a second data unit to the wireless communications network, or receiving a first data unit and a second data unit from the wireless communications network; wherein the second data unit is a duplicate of the first data unit, and wherein the first data unit is transmitted or received using first radio resources, and the second data unit is transmitted using second radio resources that are different than the first radio resources.
    Type: Application
    Filed: October 19, 2017
    Publication date: July 18, 2019
    Inventors: Mikael Wittberg, Torsten Dudda, Qianxi Lu, Zhan Zhang
  • METHODS USED IN TERMINAL DEVICES AND NETWORK DEVICES, AND ASSOCIATED DEVICES
    Publication number: 20190208545
    Abstract: The present disclosure relates to a method used in a terminal device, and the associated terminal device. The method comprises: obtaining a pattern for UL transmission to a network device, the pattern being specific to the terminal device and specifying a plurality of time points for transmitting a UL signal to the network device; and transmitting the UL signal to the network device based on the pattern. The present disclosure further relates to a method used in a network device, and the associated network device.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Inventors: Zhan ZHANG, Gen LI
  • Network node, wireless device, respective method performed thereby for supporting wireless device operation in heterogeneous frequency bands
    Patent number: 10334596
    Abstract: A network node, a wireless device and a respective method performed by the same in a wireless communication network employing heterogeneous frequency band types, the network node being operative to serve wireless devices in a non-licensed frequency band and in a licensed frequency band, the network node serving a wireless device in a non-licensed frequency band are provided. The method in the network node comprises configuring (110) a fallback carrier in the licensed frequency band to the wireless device, wherein if the network node determines that the wireless device should switch to the licensed frequency hand, the method comprises handing over (130) the wireless device to the fallback carrier.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: June 25, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gen Li, Jinhua Liu, Zhan Zhang