Patents by Inventor Xiaoxia Zhang

Xiaoxia 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).

  • Patent number: 10939431
    Abstract: Wireless communications systems and methods related to scheduling and communicating in an uplink direction over a medium shared by multiple network operating entities are provided. A first wireless communication device transmits, to a second wireless communication device, a message indicating an uplink allocation in a transmission slot, the uplink allocation including an allocation size based on an allowable listen-before-talk (LBT) delay in the transmission slot. The first wireless communication device receives, from the second wireless communication device, an uplink communication signal in the transmission slot, the uplink communication signal including an uplink data portion based on the allocation size and a filler portion associated with an LBT delay in the transmission slot.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 2, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Kapil Bhattad, Xiaoxia Zhang, Jing Sun, Ananta Narayanan Thyagarajan
  • Patent number: 10939440
    Abstract: Techniques are described for wireless communication at a wireless device. One method includes identifying a priority of the wireless device for a transmission interval of a radio frequency spectrum band shared by a plurality of network operating entities; identifying an absence of a predetermined transmission type in each of a number of clear channel assessment (CCA) slots of the transmission interval, in which each of the number of CCA slots is associated with a higher priority than the identified priority of the wireless device; and communicating over the radio frequency spectrum band based at least in part on the identified absence of the predetermined transmission type in each of the number of CCA slots associated with the higher priority than the priority of the wireless device.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: March 2, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Xiaoxia Zhang, Juan Montojo, Taesang Yoo, Siddhartha Mallik, Aleksandar Damnjanovic, Michael Mingxi Fan
  • Patent number: 10939441
    Abstract: A base station may configure a set of autonomous uplink (AUL) resources for a specific base station receive beam, or the AUL resources may be configured for specific user equipment (UEs) or user groups. Additionally, the AUL resources may be configured to include a sensing portion, a data portion, or both. As an example, a UE may receive an AUL configuration that includes an indication of a set of AUL resources that are specific to a base station receive beam. The UE may then determine that the set of AUL resources is available and perform an AUL transmission of uplink data using the set of beam-specific AUL resources. Additionally or alternatively, the UE may perform the AUL transmission with respective portions that include a sensing signal and the uplink data. The base station may use the sensing signal to determine a receive beam on which to receive the uplink data.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: March 2, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Kapil Bhattad, Jing Sun, Xiaoxia Zhang, Yongbin Wei, Tamer Kadous, Srinivas Yerramalli, Tao Luo
  • Patent number: 10938519
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus relating to an RE mapping rule for UCI piggyback on PUSCH. For example, a method may include determining a set of uplink resources to use for transmitting acknowledgment (ACK) information in a physical uplink shared channel (PUSCH) transmission, wherein the determination is based at least in part on a payload size of the ACK information, and transmitting the ACK information using the determined set of uplink resources.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: March 2, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Yi Huang, Peter Gaal, Wanshi Chen, Renqiu Wang, Seyong Park, Xiaoxia Zhang
  • Patent number: 10939428
    Abstract: Since multiple transmit-receive point (TRP) communications may increase the number of physical downlink control channel (PDCCH) candidates without increasing the number of cells, new limits for multi-TRP communications may be defined. A UE may determine a PDCCH monitoring capability across all downlink serving cells that may account for multiple-TRP cells and for carrier aggregation and dual connectivity using a multiplication factor. Further, the UE may determine a limit of a number of serving cells based on the capability and a configuration of serving cells. The UE may determine a total limit of PDCCH candidates and non-overlapped control channel elements (CCEs) to monitor in a slot for a cell group and a per cell limit single TRP cells and for multiple TRP cells based on the limit of the number of serving cells. Alternatively, the limits may be defined per control resource set (CORESET) group.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: March 2, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Mostafa Khoshnevisan, Xiaoxia Zhang, Peter Gaal, Kazuki Takeda
  • Publication number: 20210058997
    Abstract: Certain aspects of the present disclosure provide techniques for performing radio link monitoring (RLM) and radio link failure procedures in multiple-TRP (mTRP) communications, wherein the first TRP is part of a first cell group comprising the first TRP and one or more additional TRPs. The techniques include a method of wireless communication by a user equipment (UE), comprising establishing a plurality of radio links between the UE and a first transmission reception point (TRP) and a second TRP, determining an RLM resource of a first radio link of the plurality of radio links, monitoring the first radio link according to the determined RLM resource, detecting an RLF of the first radio link, determining that the first TRP is associated with the RLF of the first radio link based on the RLM resource of the first radio link, and transmitting an RLF notification indicating the RLF of the first radio link.
    Type: Application
    Filed: May 27, 2020
    Publication date: February 25, 2021
    Inventors: Xiaoxia ZHANG, Tao LUO, Linhai HE, Ozcan OZTURK, Arumugam CHENDAMARAI KANNAN, Sungwoo PARK, Mostafa KHOSHNEVISAN, Jing SUN
  • Publication number: 20210058976
    Abstract: Random access channel access and validity procedures are disclosed. In one aspect, the medium access control (MAC) indications multiple random access occasions (ROs) to user equipments (UEs) for random access transmissions. In such aspect, random access failure would only be declared if listen before talk (LBT) procedures for the random access transmission fail on all of the ROs indicated by the MAC layer. Similarly, in additional aspects, a UE will not apply a backoff value for any LBT failures for random access attempts that occur within an LBT time window. In further aspects, a UE may determine the validity of ROs that overlap with a discovery reference signal measurement timing configuration (DMTC) window. In such aspects, the UE may not use overlapping ROs or may determine a portion of the DMTC window that is not used for base station transmissions and declare the overlapping ROs with the unused portion valid.
    Type: Application
    Filed: November 9, 2020
    Publication date: February 25, 2021
    Inventors: Pravjyot Singh Deogun, Xiaoxia Zhang, Ozcan Ozturk, Jing Sun, Kapil Bhattad, Ananta Narayanan Thyagarajan
  • Publication number: 20210058968
    Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify a listen-before-talk (LBT) procedure to use for transmitting a downlink signal to a user equipment (UE) on a shared radio frequency spectrum band. The LBT procedure may be a group LBT procedure associated with a first set of contention window durations or an individual listen-before talk procedure associated with a second set of contention window durations. The base station may determine a contention window duration corresponding to the identified LBT procedure, perform the identified LBT procedure using the determined contention window duration, and transmit the downlink signal to the UE based on the performed LBT procedure.
    Type: Application
    Filed: August 17, 2020
    Publication date: February 25, 2021
    Inventors: Yisheng Xue, Aleksandar Damnjanovic, Xiaoxia Zhang, Yongbin Wei
  • Publication number: 20210058819
    Abstract: Wireless communication devices, systems, and methods related to mechanisms to aid a user equipment in determining the channel access priority (CAPC) to use for a data radio bearer (DRB) on the response link, such as uplink (UL), that includes multiple quality of service (QoS) flows for an UL transmission (such as for a configured grant UL transmission). The UE may receive a plurality of QoS flows in a common DRB from a base station. The UE may apply a rule to select a CAPC to apply for all QoS flows in the common DRB on an UL transmission. This rule may alternatively include the base station making the selection of the CAPC to apply and informing the UE of the selected CAPC for implementation. The UE may then apply the selected CAPC to the UL transmission.
    Type: Application
    Filed: August 19, 2020
    Publication date: February 25, 2021
    Inventors: Ozcan Ozturk, Xiaoxia Zhang, Jing Sun
  • Publication number: 20210058945
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for handling hybrid automatic repeat request (HARQ) processes with discontinuous reception (DRX) operations. A user equipment (UE) may use timers to maintain an ON duration in DRX. The UE may receive, via downlink control information (DCI), an indication of a feedback transmission opportunity (TxOP) for a HARQ process. The UE may activate a timer at the end of the TxOP regardless of whether the UE transmits feedback in the TxOP to ensure that the UE remains active. In some implementations, a base station may provide the UE with multiple opportunities to transmit a feedback message. The UE may reactivate a timer after each feedback TxOP for the same HARQ process or may activate the timer after the first feedback TxOP and may refrain from activating the timer after subsequent feedback TxOPs for the HARQ process.
    Type: Application
    Filed: August 7, 2020
    Publication date: February 25, 2021
    Inventors: Xiaoxia Zhang, Ozcan Ozturk, Mostafa Khoshnevisan, Jing Sun
  • Publication number: 20210058889
    Abstract: This disclosure provides systems, methods and apparatuses for wireless communication that may allow a user equipment (UE) to determine its relative position and distances to other UEs more accurately than standard vehicle-to-everything (V2X) communications allow. In some implementations, a UE (or other wireless communication device) participating in a positioning operation may transmit and receive positioning signals on an unlicensed radio band, and may transmit and receive non-positioning signals on a V2X channel (or on another suitable channel) of a radio access network (RAN). The positioning signals may include positioning reference signals (PRSs) associated with observed time difference of arrival (OTDOA) positioning operations, ranging signals associated with round-trip time (RTT) positioning operations, or other suitable signals from which the position of the UE can be determined.
    Type: Application
    Filed: August 10, 2020
    Publication date: February 25, 2021
    Inventors: Xiaoxia ZHANG, Srinivas YERRAMALLI, Taesang YOO, Junyi LI, Yongbin WEI, Sudhir Kumar BAGHEL, Shailesh PATIL, Kapil GULATI, Chang-Sik CHOI
  • Publication number: 20210053983
    Abstract: Provided are salts of (S)-(4,5-dihydro-7H-thieno[2,3-c]pyran-7-yl)-N-methylmethanamine and various of crystal forms thereof, and compositions, medicaments, pharmaceutically acceptable formulations thereof, and methods of making same. In addition, provided are compounds comprising specific particle size distributions of crystalline (S)-(4,5-dihydro-7H-thieno[2,3-c]pyran-7-yl)-N-methylmethanamine HCl and methods of making and modulating the particle size distributions.
    Type: Application
    Filed: August 28, 2020
    Publication date: February 25, 2021
    Applicant: Sunovion Pharmaceuticals Inc.
    Inventors: Andrea BAUER, Nandkumar Nivritti BHOGLE, Xiaoxia CHEN, Shahla JAMZAD, Robert Joseph PRYTKO, Kostas SARANTEAS, Michael Joseph SIZENSKY, Harold Scott WILKINSON, Haitao ZHANG
  • Patent number: 10932259
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indicator of a feedback window that is offset relative to a beginning transmission time interval (TTI) of a set of consecutive TTIs. The consecutive TTIs may include a set of aggregated slots or may correspond to a multi-TTI grant. The feedback window may include multiple control channel occasions interspersed within a duration of the set of consecutive TTIs. The UE may receive a transport block within a first TTI of the set of consecutive TTIs and transmit, within a control channel, feedback to indicate whether the transport block was successfully received.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: February 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoxia Zhang, Juan Montojo, Kiran Venugopal, Tianyang Bai, Tao Luo, Makesh Pravin John Wilson
  • Patent number: 10932282
    Abstract: Wireless communications systems and methods related to determining scheduling and transmission timeline for communicating in a shared communication medium are provided. A first wireless communication device communicates, with a second wireless communication device, scheduling information during a first time period of a first transmission opportunity (TXOP) of a first network operating entity in a shared communication medium, the scheduling information indicating an offset time period relative to the first time period. The first wireless communication device communicates, with the second wireless communication device, a communication signal during a second TXOP subsequent to the first TXOP based on the offset time period.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: February 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoxia Zhang, Vikas Jain, Taesang Yoo, Tamer Kadous, Yongbin Wei
  • Patent number: 10931408
    Abstract: This disclosure provides systems, methods and apparatus for wireless communication. In one aspect, a multi-transmit-receive point (TRP) approach for hybrid automatic repeat request (HARQ) acknowledgment (ACK) feedback using counter downlink assignment indicators (DAIs) (cDAIs) and total DAIs (tDAIs) is provided. For example, some techniques and apparatuses described herein may provide a joint counting method in which cDAIs and tDAIs are implemented and tracked jointly between the TRPs of a multi-TRP group. This may be useful in the ideal backhaul scenario when the multi-TRP group is jointly scheduled, and may be more robust against errors than a separate counting method. Some techniques and apparatuses described herein may provide a separate counting method, in which cDAIs and tDAIs are implemented and tracked separately by the respective TRPs of a multi-TRP group.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: February 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Mostafa Khoshnevisan, Jing Sun, Xiaoxia Zhang
  • Publication number: 20210050934
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive configuration information identifying respective rate matching resources of at least two groups and respective transmission configuration indication (TCI) states for the at least two groups. The user equipment may rate match a shared channel transmitted by one or more transmitters based at least in part on the respective rate matching resources and the respective TCI states. Numerous other aspects are provided.
    Type: Application
    Filed: August 10, 2020
    Publication date: February 18, 2021
    Inventors: Mostafa KHOSHNEVISAN, Xiaoxia ZHANG, Jing SUN
  • Publication number: 20210051701
    Abstract: Methods, systems, and devices for wireless communications are described. A communication device, which may be otherwise known as a user equipment may receive control signaling that configures the communication device with a set of configured grant configurations. The communication device may receive, via a group control channel, group downlink control information (DCI) for a plurality of communication devices that includes the communication device. In some examples, the group control channel may be a group physical downlink control channel. The communication device may communicate a data transmission in accordance with a first configured grant configuration of the plurality of configured grant configurations based on a configuration indication in the group DCI indicating the first configured grant configuration.
    Type: Application
    Filed: August 5, 2020
    Publication date: February 18, 2021
    Inventors: Seyed Ali Akbar Fakoorian, Aleksandar Damnjanovic, Tao Luo, Xiaoxia Zhang, Yan Zhou, Jing Sun
  • Publication number: 20210051052
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station and/or a user equipment may determine a time domain resource pattern for a set of demodulation reference signals (DMRSs), wherein the set of DMRSs is included in a Type-B physical downlink shared channel (PDSCH). A base station may transmit, and the user equipment may receive, the set of DMRSs using a set of resources determined based at least in part on the time domain resource pattern. Numerous other aspects are provided.
    Type: Application
    Filed: August 12, 2020
    Publication date: February 18, 2021
    Inventors: Kapil BHATTAD, Ananta Narayanan THYAGARAJAN, Jing SUN, Xiaoxia ZHANG, Tae Min KIM
  • Publication number: 20210051709
    Abstract: Methods, systems, and devices for wireless communications are described that support listen before talk (LBT) for uplink transmissions using multiple subbands. A base station may support communication with a user equipment (UE) via multiple subbands and may transmit an uplink grant to the UE that allocates resources of the multiple subbands for transmission of a shared data channel by the UE. The base station may include an indication within the uplink grant that indicates to the UE to perform a given type of LBT for each subband. After transmitting the uplink grant, the base station may transmit control information or other signaling (e.g., channel occupancy time system information (COT-SI)) that indicates subbands on which the UE is to perform a given type of LBT or other subbands on which the UE is to perform a different type of LBT.
    Type: Application
    Filed: August 13, 2020
    Publication date: February 18, 2021
    Inventors: Kapil Bhattad, Tanumay Datta, Jing Sun, Xiaoxia Zhang
  • Publication number: 20210051495
    Abstract: Methods, systems, and devices for wireless communications are described. Wireless devices may communicate over a primary and fallback beam. To support communications over a primary and fallback beam, a preconfiguration procedure may be performed to communicate to a transmitting and receiving device the identity of the primary and fallback beam. A central scheduling node may assist in identifying the primary and fallback beam for the transmitting and receiving device. During communications, the transmitting and receiving device may switch to the fallback beam when an initial communication fails and may perform a retransmission that includes data from the initial communication over the fallback beam.
    Type: Application
    Filed: July 13, 2020
    Publication date: February 18, 2021
    Inventors: Piyush Gupta, Junyi Li, Xiaoxia Zhang