Patents by Inventor Qingjiang Tian

Qingjiang Tian 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: 10812634
    Abstract: Methods, devices, and computer program products for traffic information signaling in a wireless communications network are disclosed. In one aspect, a method of wireless communication network is disclosed. The method includes selecting, from a variable number of control fields, one or more control fields for inclusion in a frame. The method further includes generating the frame comprising the selected number of control fields, each control field comprising an end of control field, the end of control field storing an indicator indicative of an end of the selected number of control fields or a presence of another control field in the frame. The method further includes transmitting the frame.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: October 20, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Alfred Asterjadhi, Simone Merlin, George Cherian, Gwendolyn Denise Barriac, Gang Ding, Qingjiang Tian, Yan Zhou
  • Patent number: 10708950
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may obtain access to a shared radio frequency spectrum band for a transmission opportunity. The UE may perform an autonomous uplink transmission over the shared radio frequency spectrum band during a first portion of the transmission opportunity. The UE may transmit a physical layer scheduling request comprising a transmission size parameter for a second portion of the transmission opportunity. The UE may receive an uplink grant for the second portion of the transmission opportunity based at least in part on the scheduling request. The UE may perform a scheduled uplink transmission over the shared radio frequency spectrum band during the second portion of the transmission opportunity according to the uplink grant.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: July 7, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Qingjiang Tian, Jing Sun, Xiaoxia Zhang, Srinivas Yerramalli, Tamer Kadous
  • Publication number: 20200196305
    Abstract: Wireless communications systems and methods related to communicating uplink control information (UCI) in a network operating over multiple aggregated unlicensed carriers are provided. A first wireless communication device communicates, with a second wireless communication device, a downlink communication signal. The first wireless communication device communicates, with the second wireless communication device, an unscheduled uplink communication signal including an uplink report associated with the downlink communication signal, the unscheduled uplink communication signal communicated based on a listen-before-talk (LBT) procedure. The uplink report includes at least one of an acknowledgement (ACK) for data in the downlink communication signal, a negative-acknowledgement (NACK) for the data in the downlink communication signal, or channel information based at least on the downlink communication signal.
    Type: Application
    Filed: February 27, 2020
    Publication date: June 18, 2020
    Inventors: Qingjiang Tian, Xiaoxia Zhang, Jing Sun, Srinivas Yerramalli
  • Patent number: 10666368
    Abstract: Methods and apparatus for managing reuse of a wireless medium are provided. One method of managing reuse of a wireless medium includes determining, at an access point, whether to allow reuse of the wireless medium by one or more stations in a basic service set (BSS). The method further includes transmitting, upon determining to allow reuse, an indication that reuse of the wireless medium can be permitted for stations meeting a criteria. The method further includes determining one or more reuse parameters. The method further includes transmitting the one or more reuse parameters.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: May 26, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Gwendolyn Denise Barriac, George Cherian, Simone Merlin, Alfred Asterjadhi, Yan Zhou, Gang Ding, Qingjiang Tian
  • Publication number: 20200084759
    Abstract: Generally, the described techniques provide for a base station transmitting an indication of a set of one or more available channels to a user equipment (UE). The base station may transmit to the UE a first downlink burst using a first channel and a first frame period. In some cases, the base station may detect interference associated with the first downlink burst, for example, by performing a listen-before-talk (LBT) procedure or through an interference management resources (IMR) procedure in which the base station transmits reference signal signals to the UE that the UE may use to return a report on measured interference. If the base station detects interference, the base station may transmit to the UE an instruction to switch to a second channel and a second frame period, where the second channel may be selected from the set of one or more available channels.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 12, 2020
    Inventors: Chih-Hao Liu, Seyed Ali Akbar Fakoorian, Srinivas Yerramalli, Qingjiang Tian, Andrei Dragos Radulescu, Tamer Kadous
  • Patent number: 10588152
    Abstract: The present disclosure provides techniques for configuring the utilization of request-to-send/clear-to-send (RTS/CTS) protocol procedures based on varying conditions at the STA. For example, an AP may identify one or more conditions, when satisfied, may trigger the STA to either enable or disable uplink (UL) transmissions associated with a RTS/CTS protocol procedure. In some aspects, an AP may determine a transmit opportunity (TXOP) threshold for an STA and may determine whether to broadcast a message having the TXOP threshold to multiple STAs including the STA or unicast the message to the STA. An STA may receive a message from an AP having a TXOP threshold and may replace, based on an indication in the received message, a current TXOP threshold in the STA with the TXOP threshold in the received message. The STA may transmit an UL RTS frame in response to a determination that a planned TXOP duration satisfies the TXOP threshold.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: March 10, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Zhou, Gwendolyn Denise Barriac, George Cherian, Simone Merlin, Alfred Asterjadhi, Qingjiang Tian, Gang Ding
  • Publication number: 20190349965
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit, via an autonomous uplink communication, one or more transport blocks to a base station. Each transport block may include a plurality of code block groups (CBGs). The base station may provide CBG-level feedback to the UE based at least in part on the autonomous uplink communication. In some examples, the base station may provide the CBG-level feedback in one or more downlink feedback information (DFI) packets. In some other examples, the base station may provide the CBG-level feedback via one or more uplink transmission grants. The UE may retransmit one or more CBGs from the autonomous uplink communication based at least in part on the DFI packets or uplink transmission grants.
    Type: Application
    Filed: May 7, 2019
    Publication date: November 14, 2019
    Inventors: Kaushik Chakraborty, Xiaoxia Zhang, Jing Sun, Qingjiang Tian
  • Publication number: 20190349121
    Abstract: A method of wireless communication includes determining, by a user equipment (UE) in response to a failed transmission to the UE by a base station, to transmit a negative acknowledgment (NACK). The method additionally includes transmitting, by the UE to the base station, the NACK in an acknowledgement (ACK) resource previously allocated by the base station, and triggering at least one action, by the UE in response to at least one of the determination to transmit the NACK or the transmission of the NACK. The at least one action improves retransmission success rate. In another aspect, a method of wireless communication includes receiving, by a base station from a UE, a NACK in an ACK resource previously allocated by the base station, and triggering at least one action, by the base station in response to the receipt of the NACK. The at least one action improves retransmission success rate.
    Type: Application
    Filed: May 8, 2019
    Publication date: November 14, 2019
    Inventors: Qingjiang Tian, Srinivas Yerramalli, Xiaoxia Zhang, Jing Sun, Yongbin Wei
  • Publication number: 20190342017
    Abstract: Methods and apparatus for managing reuse of a wireless medium are provided. One method of managing reuse of a wireless medium includes determining, at an access point, whether to allow reuse of the wireless medium by one or more stations in a basic service set (BSS). The method further includes transmitting, upon determining to allow reuse, an indication that reuse of the wireless medium can be permitted for stations meeting a criteria. The method further includes determining one or more reuse parameters. The method further includes transmitting the one or more reuse parameters.
    Type: Application
    Filed: July 19, 2019
    Publication date: November 7, 2019
    Inventors: Gwendolyn Denise BARRIAC, George CHERIAN, Simone MERLIN, Alfred ASTERJADHI, Yan ZHOU, Gang DING, Qingjiang TIAN
  • Publication number: 20190313409
    Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for a base station transmitting to a user equipment (UE) a partial bandwidth configuration for uplink transmissions, where the partial bandwidth configuration may indicate a channel interlace and a portion of a channel bandwidth, for example, for autonomous uplink (AUL) transmissions. The base station may also transmit to the UE an AUL configuration including a group identifier. The UE may determine a starting offset with respect to an AUL subframe for a partial bandwidth transmission based on the group identifier. In some cases, different UEs may be grouped into groups of UEs allocated non-overlapping resources, and UEs allocated overlapping resources may have different starting offsets to begin transmitting. According to the determined starting offset, the UE may perform the partial bandwidth transmission over the channel interlace and the portion of the channel bandwidth.
    Type: Application
    Filed: April 3, 2019
    Publication date: October 10, 2019
    Inventors: Qingjiang Tian, Xiaoxia Zhang, Jing Sun, Kapil Bhattad, Srinivas Yerramalli, Chih-Hao Liu
  • Publication number: 20190297620
    Abstract: Wireless communications systems and methods related to communicating uplink control information (UCI) in a network operating over multiple aggregated unlicensed carriers are provided. A first wireless communication device communicates, with a second wireless communication device, a downlink communication signal. The first wireless communication device communicates, with the second wireless communication device, an unscheduled uplink communication signal including an uplink report associated with the downlink communication signal, the unscheduled uplink communication signal communicated based on a listen-before-talk (LBT) procedure. The uplink report includes at least one of an acknowledgement (ACK) for data in the downlink communication signal, a negative-acknowledgement (NACK) for the data in the downlink communication signal, or channel information based at least on the downlink communication signal.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 26, 2019
    Inventors: Qingjiang Tian, Xiaoxia Zhang, Jing Sun, Srinivas Yerramalli
  • Publication number: 20190261210
    Abstract: Base station contention window update procedures with autonomous uplink (AUL) in a transmission opportunity (TxOP) is discussed. After acquiring a channel and scheduling the TxOP, a base station may transmit control signals to manage communications with served user equipments (UEs). Management of AUL communications in addition to update of the contention window may be determined based on whether the base station has either or both downlink data and scheduled uplink (SUL) transmissions scheduled for the TxOP. Where both downlink and SUL are scheduled, AUL transmissions are allowed, but update of the contention window uses feedback based on the downlink transmissions. Where SUL are scheduled, but no downlink data, AUL are allowed and the contention window is updated using performance information on the uplink transmissions. Finally, where neither data nor SUL are scheduled, the base station deactivate any AUL resources for the TxOP and will refrain from updating the contention window.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 22, 2019
    Inventors: Qingjiang Tian, Srinivas Yerramalli, Jing Sun, Xiaoxia Zhang, Chih-Hao Liu
  • Publication number: 20190261382
    Abstract: Indication of transmission priority class is disclosed for sharing a base station's maximum channel occupancy time (MCOT) for use in autonomous uplink (AUL). Aspects of the disclosure provide for implicitly sharing the MCOT by providing an indication of transmission opportunity (TxOP) length. A serving base station sends an indication of a current TxOP length in control signals to a user equipment (UE). The UE may then infer a set of potential transmission priorities used by the serving base station according to the TxOP length, as TxOP length may relate to the MCOT, which itself may be associated with a particular transmission priority class. The UE may then, conservatively, select the highest transmission priority of the set of potential transmission priorities for autonomously transmitting any uplink data having at least the selected highest transmission priority within configured AUL resource of the current TxOP.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 22, 2019
    Inventors: Qingjiang Tian, Srinivas Yerramalli, Xiaoxia Zhang, Jing Sun, Chih-Hao Liu
  • Publication number: 20190253219
    Abstract: Methods, systems, and devices for wireless communications are described. One method may include receiving, by a user equipment (UE) from a base station, a resource allocation indicator corresponding to a total number of resource elements to allocate for uplink control information within a resource allocation of a shared data channel. The UE may determine anchor resources within the resource allocation, and determine a plurality of transmission parameters for an autonomous uplink transmission based on the total number of resource elements. The UE may transmit, to the base station, the uplink control information within the anchor resources to indicate the plurality of transmission parameters for the autonomous uplink transmission.
    Type: Application
    Filed: January 7, 2019
    Publication date: August 15, 2019
    Inventors: Zhifei Fan, Xiaoxia Zhang, Jing Sun, Tamer Kadous, Qingjiang Tian
  • Publication number: 20190229788
    Abstract: Wireless communications systems and methods related to performing adaptive autonomous uplink (UL) communications are provided. A first wireless communication device receives, from a second wireless communication device, an autonomous uplink transmission configuration. The first wireless communication device determines a transmission parameter in response to a link adaptation parameter based on the autonomous uplink transmission configuration. The first wireless communication device transmits, to the second wireless communication device, an autonomous uplink communication signal based on the determined transmission parameter.
    Type: Application
    Filed: January 7, 2019
    Publication date: July 25, 2019
    Inventors: Xiaoxia Zhang, Kapil Bhattad, Jing Sun, Qingjiang Tian, Srinivas Yerramalli, Tamer Kadous, Yongbin Wei, Aleksandar Damnjanovic
  • Publication number: 20190222356
    Abstract: Timing considerations for autonomous uplink (AUL) downlink feedback information (AUL-DFI) is disclosed. With the flexible timeline for new radio (NR) operations, signaling of the processing timeline may be used for the served user equipments (UEs) to properly interpret the acknowledgement information in the AUL-DFI. The UE receives a signal identifying a minimum processing time of the serving base station to process AUL. Using the knowledge of the minimum processing time, the UE determines which of the outstanding AUL transmissions are accurately addressed in the AUL-DFI and which are still pending. Additional signaling to the UE may instruct the UE when to implement any changes to transmission parameters also signaled via the AUL-DFI. Slots prior to the indicated change time will be transmitted using the current parameters, while slots after the indicated time will use the updated parameters from the AUL-DFI.
    Type: Application
    Filed: December 11, 2018
    Publication date: July 18, 2019
    Inventors: Xiaoxia Zhang, Qingjiang Tian, Jing Sun
  • Publication number: 20190223215
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may obtain access to a shared radio frequency spectrum band for a transmission opportunity. The UE may perform an autonomous uplink transmission over the shared radio frequency spectrum band during a first portion of the transmission opportunity. The UE may transmit a physical layer scheduling request comprising a transmission size parameter for a second portion of the transmission opportunity. The UE may receive an uplink grant for the second portion of the transmission opportunity based at least in part on the scheduling request. The UE may perform a scheduled uplink transmission over the shared radio frequency spectrum band during the second portion of the transmission opportunity according to the uplink grant.
    Type: Application
    Filed: November 28, 2018
    Publication date: July 18, 2019
    Inventors: Qingjiang Tian, Jing Sun, Xiaoxia Zhang, Srinivas Yerramalli, Tamer Kadous
  • Publication number: 20190174543
    Abstract: The present disclosure provides techniques for configuring the utilization of request-to-send/clear-to-send (RTS/CTS) protocol procedures based on varying conditions at the STA. For example, an AP may identify one or more conditions, when satisfied, may trigger the STA to either enable or disable uplink (UL) transmissions associated with a RTS/CTS protocol procedure. In some aspects, an AP may determine a transmit opportunity (TXOP) threshold for an STA and may determine whether to broadcast a message having the TXOP threshold to multiple STAs including the STA or unicast the message to the STA. An STA may receive a message from an AP having a TXOP threshold and may replace, based on an indication in the received message, a current TXOP threshold in the STA with the TXOP threshold in the received message. The STA may transmit an UL RTS frame in response to a determination that a planned TXOP duration satisfies the TXOP threshold.
    Type: Application
    Filed: January 18, 2019
    Publication date: June 6, 2019
    Inventors: Yan ZHOU, Gwendolyn Denise BARRIAC, George CHERIAN, Simone MERLIN, Alfred ASTERJADHI, Qingjiang TIAN, Gang DING
  • Patent number: 10278022
    Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. The apparatus is configured to determine a communication deferral policy within a BSS associated with the apparatus. The apparatus is configured to receive a message from a second wireless device. The apparatus is configured to determine a message type of the message. The apparatus is configured to determine whether the message is associated with an OBSS based on the determined message type. The apparatus is configured to determine whether to defer communications based on the communication deferral policy, the message type, and whether the message is associated with the OBSS.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: April 30, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Zhou, Gwendolyn Denise Barriac, Simone Merlin, George Cherian, Alfred Asterjadhi, Qingjiang Tian, Gang Ding
  • Patent number: 10264606
    Abstract: The present disclosure provides techniques for configuring the utilization of request-to-send/clear-to-send (RTS/CTS) protocol procedures based on varying conditions at the STA. For example, an AP may identify one or more conditions, when satisfied, may trigger the STA to either enable or disable uplink (UL) transmissions associated with a RTS/CTS protocol procedure. In some aspects, an AP may determine a transmit opportunity (TXOP) threshold for an STA and may determine whether to broadcast a message having the TXOP threshold to multiple STAs including the STA or unicast the message to the STA. An STA may receive a message from an AP having a TXOP threshold and may replace, based on an indication in the received message, a current TXOP threshold in the STA with the TXOP threshold in the received message. The STA may transmit an UL RTS frame in response to a determination that a planned TXOP duration satisfies the TXOP threshold.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: April 16, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Zhou, Gwendolyn Denise Barriac, George Cherian, Simone Merlin, Alfred Asterjadhi, Qingjiang Tian, Gang Ding