Patents by Inventor Kapil Bhattad

Kapil Bhattad 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: 20200374943
    Abstract: This disclosure provides systems, methods, and apparatuses for random access channel (RACH) occasions that overlap each other in time and frequency. In one aspect, the RACH occasions may use different preamble sequence sets. A base station may signal configuration information indicating the preamble sequence sets for the RACH occasions and information indicating a time-frequency resource allocation of the RACH occasions. A UE may perform a random access procedure in accordance with the configuration information.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 26, 2020
    Inventors: Jing SUN, Tanumay DATTA, Kapil BHATTAD, Ananta Narayanan THYAGARAJAN, Xiaoxia ZHANG
  • Publication number: 20200366415
    Abstract: Methods, systems, and devices for wireless communications are described that provide for group or one-shot acknowledgment (ACK) feedback reporting, in which feedback for a number of different downlink transmissions may be provided by a user equipment (UE) to a base station. A base station may trigger a one-shot feedback report that includes less than all of the ACK feedback that is available at the UE to provide in a report. The ACK feedback may include an indication of an ACK or a negative acknowledgement (NACK) along with information related to a data indicator associated with the downlink transmission. In some cases regular ACK feedback reports and one-shot feedback reports may be multiplexed and transmitted by a UE. Further, a last downlink transmission to be included in a one-shot feedback report may be determined based on a receipt time of scheduling information or an ACK feedback timeline.
    Type: Application
    Filed: March 18, 2020
    Publication date: November 19, 2020
    Inventors: Mostafa Khoshnevisan, Jing Sun, Xiaoxia Zhang, Kapil Bhattad, Peter Gaal
  • Patent number: 10841957
    Abstract: Aspects directed towards facilitating multi-node listen before talk (LBT) functionality via a centralized controller are disclosed. In one example, for each of a plurality of scheduled entities, a corresponding set of scheduling entities is identified, and each scheduling entity of the set of scheduling entities is instructed to perform at least one LBT evaluation. This example then further includes controlling whether any of the plurality of scheduled entities is served by a corresponding one or more scheduling entities of the set of scheduling entities based on the at least one LBT evaluation performed by each scheduling entity.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: November 17, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Sun, Kapil Bhattad, Aleksandar Damnjanovic, Tamer Kadous, Taesang Yoo, Xiaoxia Zhang
  • Patent number: 10841876
    Abstract: A method for communication includes a user equipment (UE) periodically awakening to monitor for a wake-up signal (WUS) in a wake-up signal search space, the wake-up signal having a shorter length than a length of a control channel communication to allow the UE to determine whether the UE should monitor for the control channel communication.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: November 17, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Kapil Bhattad, Peter Pui Lok Ang, Alberto Rico Alvarino, Hao Xu, Wanshi Chen, Peter Gaal
  • Publication number: 20200351758
    Abstract: Wireless communications systems and methods related to channel access for discovery reference signal (DRS) transmissions in a spectrum shared by multiple network operating entities are provided. A first wireless communication device identifies a plurality of allowable transmission starting locations within a DRS measurement time configuration (DMTC) window, where at least one of the plurality of allowable transmission starting locations is offset from boundaries of a plurality of transmission slots of the DMTC window. The plurality of allowable transmission starting locations is associated with an allowable number of category 2 (CAT2) listen-before-talks (LBTs) within the DMTC window and a duration of the DRS transmission. The first wireless communication device communicates, with a second wireless communication device, a DRS beginning at a first transmission starting location of the plurality of allowable transmission starting locations.
    Type: Application
    Filed: April 28, 2020
    Publication date: November 5, 2020
    Inventors: Kapil Bhattad, Ananta Narayanan Thyagarajan, Xiaoxia Zhang, Jing Sun
  • Publication number: 20200351940
    Abstract: This disclosure provides systems, methods and apparatuses for listen-before-talk (LBT) failure-based channel congestion measurement and recovery triggering. In one aspect, a user equipment (UE) may determine an LBT metric based on a result of attempting to perform an uplink transmission in connection with an LBT procedure. For example, the UE may determine an absolute quantity of LBT failures, a ratio of unsuccessful uplink transmissions to total uplink transmission attempts, an absolute quantity of LBT successes, or another type of LBT metric. The UE may trigger a recovery action, such as a radio link failure (RLF) recovery action or a bandwidth part switch, based on determining that the LBT metric satisfies a threshold.
    Type: Application
    Filed: February 18, 2020
    Publication date: November 5, 2020
    Inventors: Pravjyot Singh DEOGUN, Kapil BHATTAD, Ozcan OZTURK, Xiaoxia ZHANG, Jing SUN, Ananta Narayanan THYAGARAJAN
  • Publication number: 20200351934
    Abstract: Certain aspects of the present disclosure provide techniques for time-domain resource allocation (TDRA) for multi-transmission time interval (TTI) grants.
    Type: Application
    Filed: April 30, 2020
    Publication date: November 5, 2020
    Inventors: Mostafa KHOSHNEVISAN, Jing SUN, Kapil BHATTAD, Xiaoxia ZHANG
  • Publication number: 20200351030
    Abstract: Techniques are described herein for improved methods, systems, devices, and apparatuses that support procedures for configured grants. Generally, the described techniques may relate to restricting a number of retransmissions used during a hybrid automatic repeat request (HARQ) process or managing potential scheduling conflicts for the HARQ process from dynamic grants and configured grants. A device (e.g., a user equipment) may initiate a timer or a counter associated with a HARQ process for indicating that transmission attempts for the HARQ process are permitted. The device may identify a transmission occasion of a configured grant in an unlicensed frequency spectrum band that is associated with the HARQ process and may determine that the timer associated with the HARQ process is active. The device may perform a transmission attempt over the transmission occasion of the configured grant based on determining that the timer is active.
    Type: Application
    Filed: February 25, 2020
    Publication date: November 5, 2020
    Inventors: Pravjyot Singh Deogun, Xiaoxia Zhang, Ozcan Ozturk, Kapil Bhattad
  • Patent number: 10827476
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine a control resource set configuration for transmissions using a single carrier waveform. The control resource set configuration may include one or more pilot regions and one or more control channel regions. The UE may monitor one or more of the pilot signal regions to identify pilot signals based at least in part on the control resource set configuration, and decode one or more control signals in the control channel regions based at least in part on the pilot signals. The control signals may be included in a control channel region associated with the pilot signal region or in a shared control channel region.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: November 3, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Kapil Bhattad, Jing Sun, Xiaoxia Zhang, Tao Luo
  • Publication number: 20200344738
    Abstract: Certain aspects of the present disclosure relate to a method and apparatus for receiving a medium occupation and a resource block group (RBG) size from a gNB, wherein the radio block group size is based on a bandwidth part (BWP) configuration. In one example, UEs with smaller BWP have finer granularity in RBG size in terms of PRBs, while UEs with larger BWP may have a coarser granularity in RBG size in terms of PRBs. An additional guard band may be used if the gNB reserves some channels such that not all of the BW is occupied. For example, if the gNB reserves the 20 MHz channel, it may perform better by adding additional guard band on each side of the 20 MHz bandwidth to accommodate an adjacent channel leakage-power ratio (ACLR). Another aspect of the present disclosure relates to assigning a UE an interlace with equally spaced PRBs.
    Type: Application
    Filed: July 10, 2020
    Publication date: October 29, 2020
    Inventors: Xiaoxia Zhang, Kapil Bhattad, Jing Sun
  • Patent number: 10819495
    Abstract: There is a need to support TDD frame structure for narrowband communications. The present disclosure provides a solution by supporting one or more TDD frame structure(s) for narrowband communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may transmit information associated with a TDD frame structure for narrowband communications. The apparatus may receive a first symbol group of a first narrowband physical random access channel (NPRACH) preamble from a UE. In one aspect, a first length of the first symbol group may be associated with the TDD frame structure.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: October 27, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Kapil Bhattad, Xiao Feng Wang, Alberto Rico Alvarino, Hao Xu
  • Publication number: 20200336239
    Abstract: Methods, systems, and devices for wireless communications are described to enable a user equipment (UE) to identify one or more missed downlink control messages. The UE may use indicators received with downlink control messages to order the downlink control messages and determine if a message is missing. Indicators in different downlink control messages may be transmitted using different numbers of bits, and the UE may use methods to compare the indicators with different bit sizes. The UE may compare all the indicators using the smallest indicator bit size or may compare indicators in sequential pairs, using a shared bit size for indicators having a same bit size and using a smallest bit size for indicators having different bit sizes. After comparing indicators and determining if one or more messages are missing, the UE may notify the base station of any missing downlink control messages using a feedback message.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 22, 2020
    Inventors: Mostafa Khoshnevisan, Jing Sun, Kapil Bhattad, Xiaoxia Zhang
  • Publication number: 20200322989
    Abstract: The described techniques provide for efficiently contending for access to a shared radio frequency spectrum for communicating on multiple allocated sub-bands across multiple carriers. As described herein, a user equipment (UE) may first identify allocated sub-bands across multiple carriers in a shared radio frequency spectrum. The UE may then select a carrier and at least one of the multiple allocated sub-bands within the carrier on which to perform a listen-before-talk (LBT) procedure of a first type, and the UE may perform the LBT procedure of the first type on the at least one sub-band. In addition, the UE may also perform LBT procedures of a second type on allocated sub-bands within carriers different from the selected carrier. Based on the results of the LBT procedures, the UE may communicate with the base station on the allocated sub-bands across the multiple carriers in the shared radio frequency spectrum.
    Type: Application
    Filed: April 6, 2020
    Publication date: October 8, 2020
    Inventors: Kapil Bhattad, Jing Sun, Xiaoxia Zhang, Pravjyot Deogun
  • Patent number: 10798733
    Abstract: Techniques for dynamically controlling long physical uplink control channel (PUCCH) transmission are described. In an aspect, the disclosure describes a method for receiving a grant to transmit a long PUCCH, determining a grant type of the grant, wherein the grant type is one of a periodic grant or an aperiodic grant, determining a slot type of the slot to transmit the long PUCCH, and transmitting the long PUCCH over one or more slots based on the grant, the determined slot type, and the determined grant type. In another aspect, the disclosure describes a method for generating a triggering signal to transmit to a user equipment (UE), the triggering signal indicating to the UE to transmit a PUCCH, transmitting the triggering signal to the UE, and receiving the long PUCCH in response to the triggering signal.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: October 6, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Kapil Bhattad, Ananta Narayanan Thyagarajan, Xiaoxia Zhang, Jing Sun
  • Publication number: 20200313946
    Abstract: Wireless communications systems and methods related to signaling transmission starting offsets for uplink transmissions in a frequency spectrum shared by multiple network operating entities are provided. A first wireless communication device communicates, with a second wireless communication device, a cyclic prefix (CP) extension length configuration for providing a gap duration for a listen-before-talk (LBT) associated with a first communication signal. The first wireless communication device communicates, with the second wireless communication device, the first communication signal including a CP extension having a length based on the CP extension length configuration.
    Type: Application
    Filed: February 28, 2020
    Publication date: October 1, 2020
    Inventors: Jing Sun, Xiaoxia Zhang, Kapil Bhattad, Ananta Narayanan Thyagarajan
  • Publication number: 20200313932
    Abstract: Techniques and devices for wireless communications are described that provide for staggering sounding reference signal (SRS) transmissions in frequency across multiple orthogonal frequency division multiplexing (OFDM) symbols, which may allow multiple UEs to transmit SRS using a common listen-before-talk (LBT) gap for a LBT procedure. The techniques also provide for transmitting an SRS across multiple OFDM symbols using same frequency resources, and an orthogonal cover code (OCC) may be applied to the SRS transmission of each OFDM symbol, which may allow multiple UEs to transmit concurrent SRS using a common LBT gap.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Inventors: Jing Sun, Xiaoxia Zhang, Kapil Bhattad, Tanumay Datta
  • Publication number: 20200314673
    Abstract: Aspects described herein relate to receiving multiple synchronization signal blocks (SSBs) from a target cell over a measurement time window. A repeating beam index for one or more of the multiple SSBs can be identified based at least in part on a determination of a repeat parameter indicating a number of beams in a SSB pattern for the target cell. A beam set of the one or more of the multiple SSBs determined to have the same repeating beam index can be associated. One or more parameters of the one or more of the multiple SSBs of the beam set can be measured and reported.
    Type: Application
    Filed: March 16, 2020
    Publication date: October 1, 2020
    Inventors: Pravjyot Singh DEOGUN, Ozcan OZTURK, Jing SUN, Xiaoxia ZHANG, Kapil BHATTAD, Ananta Narayanan THYAGARAJAN
  • Publication number: 20200313803
    Abstract: Hybrid automatic repeat request (HARQ)-acknowledgement (ACK) feedback codebook enhancements are disclosed. A size of feedback codebook may be reduced explicitly or implicitly. For example, an indicator may be identified by a corresponding field of a downlink control message. In some aspects, the indicator may indicate that multiple Physical Downlink or Uplink Shared Channels (PDSCHs/PUSCHs) are actually scheduled during one or more slots of a window corresponding to the feedback codebook. Responsive to receiving the indicator, a device may refrain from reducing the size of the feedback codebook to exclude acknowledgement feedback for additional possible PDSCH/PUSCH occasions of the slots of the window. In some aspects, a device identifies possible PDSCH/PUSCH occasions that occur outside of one or more Channel Occupancy Times (COTs) of a window. The device may generate a reduced size feedback codebook by excluding the possible PDSCH/PUSCH occasions that occur outside of the COTs of the window.
    Type: Application
    Filed: March 20, 2020
    Publication date: October 1, 2020
    Inventors: Mostafa Khoshnevisan, Jing Sun, Kapil Bhattad, Xiaoxia Zhang
  • Publication number: 20200314871
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for group reference signal triggering for contention-based systems. The described techniques may enable a network node to trigger a group of one or more user equipments (UEs) to transmit a reference signal to the network node. The network node may transmit a group common control channel indicating timing information or configuration information corresponding to a set of resources for the transmission of the reference signal. The one or more UEs may transmit the reference signal according to the timing information or configuration information.
    Type: Application
    Filed: March 10, 2020
    Publication date: October 1, 2020
    Inventors: Jing Sun, Kapil Bhattad, Xiaoxia Zhang, Tanumay Datta, Ananta Narayanan Thyagarajan
  • Publication number: 20200314898
    Abstract: Wireless communications systems and methods related to downlink control channel communications in a wireless communication network are provided. A first wireless communication device communicates, with a second wireless communication device, a configuration indicating a first group of one or more search spaces and a second group of one or more search spaces, where at least one of the first group or the second group includes at least one search space not included in an other of the first group or the second group. The first wireless communication device communicates, with the second wireless communication device, a first downlink control information (DCI) message in a first search space of the first group of one or more search spaces. The first wireless communication device communicates, with the second wireless communication device, a second DCI message in a second search space of the second group of one or more search spaces.
    Type: Application
    Filed: February 27, 2020
    Publication date: October 1, 2020
    Inventors: Jing Sun, Xiaoxia Zhang, Kapil Bhattad