Patents by Inventor LINGLING XIAO

LINGLING XIAO 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: 20220330163
    Abstract: Methods, a remote unit and abase unit are disclosed. According to one embodiment, a method at abase unit, comprising: transmitting, to a remote unit, multiple power control parameters for physical uplink control channel (PUCCH) by higher layers signaling; and transmitting, to the remote unit, a transmit power control (TPC) command with downlink control information (DCI) format 2_2 scrambled by transmit power control-physical uplink control channel-radio network temporary identity (TPC-PUCCH-RNTI), wherein the power control parameters include more than 8 P0 values and more than 4 pathloss reference signals (PL-RSs).
    Type: Application
    Filed: August 9, 2019
    Publication date: October 13, 2022
    Inventors: Bingchao Liu, Chenxi Zhu, Wei Ling, Lingling Xiao
  • Publication number: 20220321305
    Abstract: Embodiments of the present application relate to methods and apparatuses for Hybrid Automatic Repeat Request-Acknowledge (HARQ-ACK) feedback in multi-Transmit-Receive Point (TRP) transmission. According to an embodiment of the present disclosure, a method can include: transmitting configuration information indicating at least one Physical Uplink Control Channel (PUCCH) resource set; indicating a PUCCH resource of the at least one PUCCH resource set via Downlink Control Information (DCI), wherein the indicated PUCCH resource is at least for carrying a HARQ-ACK; and detecting the HARQ-ACK at least on the indicated PUCCH resource. Embodiments of the present disclosure can increase the robustness of multi-TRP transmission.
    Type: Application
    Filed: May 28, 2019
    Publication date: October 6, 2022
    Inventors: Lingling Xiao, Bingchao Liu, Chenxi Zhu, Wei Ling
  • Publication number: 20220302981
    Abstract: Methods and apparatuses for phase tracking reference signal are disclosed. A method comprises configuring a PT-RS with N PT-RS antenna ports when a ‘Transmission Configuration Indication (TCI)’ field in DCI indicates N TCI states, wherein N is 2 or more; associating each PT-RS antenna port with one DM-RS antenna port; and transmitting the PT-RS with the N PT-RS antenna ports.
    Type: Application
    Filed: September 26, 2019
    Publication date: September 22, 2022
    Applicant: Lenovo (Beijing) Ltd.
    Inventors: Bingchao Liu, Chenxi Zhu, Wei Ling, Lingling Xiao
  • Publication number: 20220287030
    Abstract: Apparatus and methods of Uplink Control Information (UCI) multiplexing in Physical Uplink Control Channel (PUCCH) resources for multiple Transmit Receive Points (TRPs) are disclosed. The apparatus includes: a processor that determines a first group PUCCH resources associated with a first identity for transmitting a first set of UCIs associated with the first identity, and a second group of PUCCH resources associated with a second identity for transmitting a second group of UCIs associated with the second identity, wherein the first set of UCIs and the second set of UCIs are expected to be transmitted in a same time interval; and a third group of PUCCH resources comprising at least one PUCCH resource selected from the first group of PUCCH resources and the second group of PUCCH resources; and a transmitter that transmits the third group of PUCCH resources in the time interval.
    Type: Application
    Filed: August 7, 2019
    Publication date: September 8, 2022
    Applicant: Lenovo (Beijing) Limited
    Inventors: Wei Ling, Chenxi Zhu, Bingchao Liu, Lingling Xiao
  • Publication number: 20220278776
    Abstract: Apparatus and methods of Physical Uplink Control Channel (PUCCH) repetition using multiple beams are disclosed. The apparatus includes: a receiver that receives a configuration data indicating a spatial relation information set for a Physical Uplink Control Channel (PUCCH) resource that is configured with a preset number of repetitions, wherein the spatial relation information set is activated for the PUCCH resource by a Medium Access Control (MAC) Control Element (CE); and a transmitter that transmits each of the PUCCH repetitions in multiple time intervals according to a mapping between the spatial relation information set and each repetition.
    Type: Application
    Filed: July 22, 2019
    Publication date: September 1, 2022
    Inventors: Wei Ling, Chenxi Zhu, Bingchao Liu, Lingling Xiao
  • Publication number: 20220271882
    Abstract: Methods and apparatuses for configuring and indicating spatial relation for PUCCH resources are disclosed. A method comprises configuring the number of PUCCH resources sharing a same PUCCH-spatialRelationInfo value, wherein the number is one or more; and transmitting a MAC CE to indicate one spatialRelationInfo value for the one or more PUCCH resources.
    Type: Application
    Filed: August 2, 2019
    Publication date: August 25, 2022
    Applicant: Lenovo (Beijing) Limited
    Inventors: Bingchao Liu, Chenxi Zhu, Lianhai Wu, Lingling Xiao
  • Patent number: 11424793
    Abstract: Methods, a base unit and a remote unit are disclosed. A method comprises determining two or more SRS resource sets for codebook or non-codebook based UL transmission of the mobile unit in the condition that the number of antenna ports simultaneously used by the mobile unit for transmitting is smaller than the number of antenna ports simultaneously used by the mobile unit for receiving; and transmitting a trigger associated with the two or more SRS resource sets to the mobile unit to trigger resource transmissions by the mobile unit.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: August 23, 2022
    Assignee: LENOVO (BEIJING) LIMITED
    Inventors: Bingchao Liu, Chenxi Zhu, Lingling Xiao
  • Publication number: 20220264630
    Abstract: Embodiments of the present disclosure relate to a method and apparatus for Multiple-Input Multiple-Output (MIMO) communication. According to an embodiment of the present disclosure, a method can include: transmitting downlink pre-emption configuration information to a user equipment (UE), wherein the downlink pre-emption configuration information comprises a first indication indicating a start position of a first pre-emption indication within first downlink control information (DCI); transmitting the first DCI comprising the first pre-emption indication to the UE. Embodiments of the present disclosure provide methods for pre-emption indication in multi-TRP transmission.
    Type: Application
    Filed: September 25, 2019
    Publication date: August 18, 2022
    Inventors: Lingling Xiao, Bingchao Liu, Chenxi Zhu, Wei Ling
  • Patent number: 11412529
    Abstract: Apparatuses, methods, and systems are disclosed for determining a transmission scheme. One method (400) includes receiving (402) data at a buffer at a first time. The method (400) also includes determining (404) a transmission scheme for transmitting the data based on whether a second time corresponding to a scheduling request resource or a third time corresponding to a grant-free resource is closer in time to the first time. The method (400) includes transmitting (406) the data using the transmission scheme.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: August 9, 2022
    Assignee: Lenovo (Beijing) Limited
    Inventors: Hongchao Li, Lingling Xiao, Lianhai Wu, Hongmei Liu
  • Publication number: 20220201680
    Abstract: Apparatus and methods of physical uplink control channel (PUCCH) transmission and reception in multiple transmit receive points (TRPs) are disclosed. The apparatus includes a transmitter for selectively transmitting a first physical uplink control channel (PUCCH) resource to a first identity, and selectively transmitting a second PUCCH resource to a second identity, wherein each one of the PUCCH resources carries a set of uplink control information (UCI); and a processor that determines whether there is an overlap between the first PUCCH resource and the second PUCCH resource.
    Type: Application
    Filed: April 30, 2019
    Publication date: June 23, 2022
    Inventors: Wei Ling, Chenxi Zhu, Bingchao Liu, Lingling Xiao
  • Publication number: 20220150019
    Abstract: Apparatuses, methods, and systems are disclosed for indicating DMRS ports for codewords. One method (500) includes transmitting (502) downlink control information. The downlink control information includes first information used to indicate a plurality of demodulation reference signal ports for transmitting a plurality of codewords, receiving the plurality of codewords, or a combination thereof. The method (500) includes transmitting (504) second information indicating a plurality of reference signals for transmitting the plurality of codewords, receiving the plurality of codewords, or a combination thereof.
    Type: Application
    Filed: February 15, 2019
    Publication date: May 12, 2022
    Inventors: Lingling Xiao, Bingchao Liu, Chenxi Zhu, Wei Ling
  • Publication number: 20220141816
    Abstract: The present application relates to a user equipment, a base station and method for transmitting uplink control information to multiple transmission reception points. The base station transmits a configuration to the user equipment. The user equipment is indicated by the configuration that a plurality of uplink control information are associated with a designated index. When the plurality of uplink control information associated with the designated index are ready to be transmitted, the user equipment transmits the plurality of uplink control information to the base station. The base station receives the plurality of uplink control information associated with the designated index.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 5, 2022
    Inventors: Wei Ling, Chenxi Zhu, Bingchao Liu, Lingling Xiao
  • Publication number: 20220116170
    Abstract: Apparatuses, methods, and systems are disclosed for determining resources for phase tracking reference signals. One method (500) includes determining (502) a first set of resources. The first set of resources are used for non-zero power phase tracking reference signals for a first downlink transmission and zero power phase tracking reference signals for a second downlink transmission. The method (500) includes determining (504) a second set of resources. The second set of resources are used for zero power phase tracking reference signals for the first downlink transmission and non-zero power phase tracking reference signals for the second downlink transmission. The method (500) includes transmitting (506) the first downlink transmission using the first set of resources and the second set of resources. The first downlink transmission is transmitted concurrently with the second downlink transmission.
    Type: Application
    Filed: January 18, 2019
    Publication date: April 14, 2022
    Inventors: Chenxi Zhu, Bingchao Liu, Wei Ling, LingLing Xiao
  • Publication number: 20220104228
    Abstract: Apparatus and methods of scheduling request (SR) transmission and reception in multiple transmit receive points (TRPs) are disclosed. The apparatus includes: a transmitter; and a processor that determines a scheduling request uplink control channel resource configured by higher layer for transmitting a scheduling request in a time interval; wherein the processor further determines a first uplink control information for transmission in a first uplink control channel resource associated with a first identity in the same time interval; the processor further determines whether there is a second uplink control information in a second uplink control channel resource for transmission associated with a second identity in the same time interval; and the processor controls the transmitter to transmit, in the same time interval, one or a combination selected from: the first uplink control channel resource, the scheduling request uplink control channel resource, and the second uplink control channel resource.
    Type: Application
    Filed: June 26, 2019
    Publication date: March 31, 2022
    Inventors: Wei Ling, Chenxi Zhu, Bingchao Liu, Lingling Xiao
  • Publication number: 20220038158
    Abstract: The present disclosure relates to method and apparatus for multiple panel and/or multiple beam codebook based PUSCH transmissions. The method includes receiving, at a User Equipment (UE), Downlink Control Information (DCI) including two or more sets of parameters; and performing codebook based Physical Uplink Shared Channel (PUSCH) transmission for transmitting the two or more codewords according to the two or more sets of parameters, respectively; wherein each of the two or more sets of parameters includes at least one of a Sounding Reference Signal Resource Indicator (SRI), a Transmitted Precoding Matrix Indicator (TPMI), a Modulation Coding Scheme (MCS), a New Data Indicator (NDI) and a Redundancy Version (RV).
    Type: Application
    Filed: October 11, 2018
    Publication date: February 3, 2022
    Inventors: Bingchao Liu, Chenxi Zhu, Lingling Xiao
  • Publication number: 20220038918
    Abstract: Embodiments of the present disclosure are directed to a method and apparatus for TRP downlink transmission. In an embodiment of the present disclosure, the apparatus includes at least one transmitter that transmits a spatial information configuration for downlink transmission. The spatial information configuration configures at least one time unit for at least one of predefined spatial information and un-predefined spatial information. In the case that the time unit is configured for the predefined spatial information, the downlink transmission is transmitted according to the predefined spatial information. In the case that the time unit is configured for un-predefined spatial information, the downlink transmission is transmitted according to the spatial information indicated in the specific spatial information in the downlink control channel or configured by the high layer signaling.
    Type: Application
    Filed: November 23, 2018
    Publication date: February 3, 2022
    Inventors: Wei Ling, Chenxi Zhu, Bingchao Liu, Lingling Xiao
  • Publication number: 20220021420
    Abstract: Methods, a base unit and a remote unit are disclosed. A method comprises determining two or more SRS resource sets for codebook or non-codebook based UL transmission of the mobile unit in the condition that the number of antenna ports simultaneously used by the mobile unit for transmitting is smaller than the number of antenna ports simultaneously used by the mobile unit for receiving; and transmitting a trigger associated with the two or more SRS resource sets to the mobile unit to trigger resource transmissions by the mobile unit.
    Type: Application
    Filed: July 13, 2018
    Publication date: January 20, 2022
    Inventors: Bingchao Liu, Chenxi Zhu, Lingling Xiao
  • Publication number: 20200322973
    Abstract: Apparatuses, methods, and systems are disclosed for determining a transmission scheme. One method (400) includes receiving (402) data at a buffer at a first time. The method (400) also includes determining (404) a transmission scheme for transmitting the data based on whether a second time corresponding to a scheduling request resource or a third time corresponding to a grant-free resource is closer in time to the first time. The method (400) includes transmitting (406) the data using the transmission scheme.
    Type: Application
    Filed: October 10, 2017
    Publication date: October 8, 2020
    Inventors: Hongchao Li, Lingling Xiao, Lianhai Wu, Hongmei Liu
  • Publication number: 20200305145
    Abstract: Apparatuses, methods, and systems are disclosed for transmitting and/or receiving an indication for a transmission scheme. One method (400) includes determining (402) a transmission scheme for transmitting a first channel. The method (400) includes transmitting (404) an indication of the transmission scheme to a base unit. The indication is based on the transmission scheme.
    Type: Application
    Filed: October 9, 2017
    Publication date: September 24, 2020
    Inventors: Hongchao Li, Hongmei Liu, Lianhai Wu, Lingling Xiao
  • Patent number: 9973513
    Abstract: A communication number updating method is provided. The method includes obtaining an old communication number and a new communication number used by a same user account of an instant messenger for a user of the old communication number and the new communication number, generating a communication number change message which carries the old communication number and the new communication number, sending the communication number change message to a contact of the user account through the instant messenger, so that the instant messenger logged in by the contact of the user account automatically accesses a local address book and add the new communication number in a communication entry of the old communication number in the local address book.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: May 15, 2018
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Yanchao Li, Lingling Xiao, Zhongcheng Li, Yalong Zhang, Yun Zhao