Patents by Inventor Bingchao Liu

Bingchao Liu 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: 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: 20220278787
    Abstract: Apparatus and methods of Transmission Configuration Indication (TCI) states configuration and activation or deactivation for multiple DCI (M-DCI) based multiple TRP (M-TRP) Downlink (DL) transmission are disclosed. The apparatus includes: a receiver that receives a capability report from a remote device, wherein the capability report indicates that the remote device supports 128 or more configurable TCI states; a processor that configures 128 or more TCI states according to the capability report; and a transmitter that transmits a Media Access Control (MAC) Control Element (CE) to activate a subset of the TCI states.
    Type: Application
    Filed: August 23, 2019
    Publication date: September 1, 2022
    Applicant: Lenovo (Beijing) Limited
    Inventors: Bingchao Liu, Chenxi Zhu, Wei Ling, Lianhai Wu
  • 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: 11411619
    Abstract: Apparatuses, methods, and systems are disclosed for determining a precoder for PTRS ports. One method (800) includes receiving (802) information indicating a precoder for transmission. The method (800) includes determining (804) a precoder for each phase tracking reference signal port based on the information. Another method (900) includes transmitting (902) information indicating a precoder for transmission. The method (900) includes receiving (904) one or more phase tracking reference signal ports precoded with the precoder.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: August 9, 2022
    Assignee: Lenovo (Beijing) Limited
    Inventors: Hongmei Liu, Chenxi Zhu, Zhennian Sun, Bingchao Liu, Vijay Nangia
  • Publication number: 20220216968
    Abstract: Methods and apparatuses for SRS enhancement are disclosed. In one embodiment, a method comprises configuring one or more cell IDs for SRS; and sending the configured cell ID(s) for SRS using higher layer signaling. In some embodiment, the method further comprises determining reserved transmission resources only for SRS transmission; and transmitting resource configuration parameters for the reserved transmission resources.
    Type: Application
    Filed: August 17, 2018
    Publication date: July 7, 2022
    Inventors: Bingchao Liu, Chenxi Zhu, Wei Ling, Haipeng Lei
  • Publication number: 20220210803
    Abstract: Methods and apparatuses for UE grouping are disclosed. A method at a base unit comprises configuring one or more higher layer parameter sets for SRS transmission with at least one of frequency hopping, repetition and antenna switching and transmitting a DCI containing a non-zero SRS request field or a higher layer signaling to trigger a SRS transmission in the symbols in one or more normal subframes.
    Type: Application
    Filed: May 13, 2019
    Publication date: June 30, 2022
    Inventors: Bingchao Liu, Chenxi Zhu, Wei Ling
  • 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
  • Patent number: 11356165
    Abstract: Apparatuses, methods, and systems are disclosed for determining a TPMI for a codebook set. One method includes receiving information indicating a transmission capability of a remote unit. The method includes determining a transmit precoding matrix indication based on a rank and a codebook corresponding to the transmission capability and the rank, wherein the transmit precoding matrix indication corresponding to a rank of one includes a maximum of five bits, and the transmit precoding matrix indication corresponding to a rank of two includes a maximum of four bits. The method includes transmitting the transmit precoding matrix indication to the remote unit.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: June 7, 2022
    Assignee: Lenovo (Beijing) Limited
    Inventors: Bingchao Liu, Chenxi Zhu
  • Publication number: 20220158796
    Abstract: Methods, a base unit and a remote unit are disclosed.
    Type: Application
    Filed: March 29, 2019
    Publication date: May 19, 2022
    Inventors: Bingchao Liu, Chenxi Zhu, Lianhai Wu, Wei Ling
  • 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
  • Patent number: 11296763
    Abstract: Apparatuses, methods, and systems are disclosed for determining information corresponding to beamforming. One method (1400) includes determining (1402) a grouping arrangement corresponding to a type of beamforming. The type of beamforming includes analog beamforming, digital beamforming, hybrid beamforming, or some combination thereof. The method (1400) includes determining (1404) a set of information corresponding to the grouping arrangement. The set of information includes the type of beamforming. The method (1400) includes transmitting (1406) the set of information to a base unit.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: April 5, 2022
    Assignee: Lenovo (Beijing) Limited
    Inventors: Chenxi Zhu, Tyler Brown, Bingchao Liu
  • 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: 20220094500
    Abstract: Methods, a base unit and a remote unit are disclosed. According to one embodiment, a method at a base unit, comprise: transmitting to a remote unit a first message which includes a configuration related to two or more Sounding Reference Signal (SRS) resource groups each of which contains one or more SRS resources for codebook or non-codebook based UL transmission, wherein the one or more SRS resources in one SRS resource groups are transmitted by only one panel; and transmitting to the remote unit a second message which includes a set of power control parameters configured for each SRS resource group, wherein the set of power control parameters includes at least target receiving power, pathloss compensation factor and pathloss reference signal.
    Type: Application
    Filed: January 11, 2019
    Publication date: March 24, 2022
    Inventors: Bingchao Liu, Chenxi Zhu, Wei Ling, Haipeng Lei
  • Publication number: 20220052820
    Abstract: Apparatuses, methods, and systems are disclosed for data block transmissions. One method (1000) includes transmitting (1002) a data blocks frequency multiplexed in a time duration to a device, wherein: the data blocks are transmitted based on spatial information and a redundancy version sequence; each data block of the data blocks carries the same data varied based on a redundancy version indicated by the redundancy version sequence and occupies a same number of virtual resource blocks in a frequency domain; the data blocks are scheduled by a control channel, wherein the control channel is used to transmit information that indicates the redundancy version sequence of redundancy version sequences configured by high layer signaling; the spatial information is indicated in the control channel or is configured by high layer signaling; and a total number of data blocks of the data blocks is configured by high layer signaling.
    Type: Application
    Filed: November 8, 2018
    Publication date: February 17, 2022
    Inventors: Wei Ling, Chenxi Zhu, Bingchao Liu
  • Publication number: 20220052733
    Abstract: Apparatuses, methods, and systems are disclosed for channel state information report calculation. One method (700) includes receiving (702) configuration information for multiple channel state information reference signal resources. The method (700) includes determining (704) two channel state information reference signal resources of the multiple channel state information reference signal resources to be used for calculating a channel state information report. The two channel state information reference signal resources are received from different transmission reception points, different panels, or a combination thereof. In certain embodiments, the method (700) includes transmitting (706) the channel state information report calculated based on the two channel state information reference signal resources.
    Type: Application
    Filed: September 26, 2018
    Publication date: February 17, 2022
    Inventors: Chenxi Zhu, Bingchao Liu, Wei Ling