Patents by Inventor Hari Sankar

Hari Sankar 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: 20220256531
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of one or more sets of contiguous time domain resources for a multi-slot transmission occasion that spans multiple slots. The UE may transmit an uplink transmission in the multi-slot transmission occasion. Numerous other aspects are described.
    Type: Application
    Filed: February 1, 2022
    Publication date: August 11, 2022
    Inventors: Gokul SRIDHARAN, Peter GAAL, Seyedkianoush HOSSEINI, Hung Dinh LY, Hari SANKAR, Sanghoon KIM, Nachiket BAPAT
  • Publication number: 20220231787
    Abstract: A new radio (NR) bit prioritization procedure that may be executed by a UE and a base station is disclosed, resulting in transmission and reception of modulation symbols having prioritized bits. For example, a transmitter may encode a code block using low-density parity-check code to generate a stream of encoded bits. The transmitter may arrange the encoded bits in one or more modulation symbols according to a relative priority of the encoded bits. The highest priority bits may be located in the most significant bits of the modulation symbol, and therefore be less likely to experience errors. A receiver may receive the modulation symbols and reorder the encoded bits according to the coding scheme based on the relative priority prior to decoding the encoded bits. The prioritization of the bits within the modulation symbols may provide improved block error rates over sequential mapping of encoded bits to symbols.
    Type: Application
    Filed: April 4, 2022
    Publication date: July 21, 2022
    Inventors: Hobin KIM, Hari SANKAR, Alexei Yurievitch GOROKHOV, Michael Lee MCCLOUD, Joseph Binamira SORIAGA
  • Publication number: 20220225146
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may measure a first energy level of a demodulation reference signal (DMRS). The UE may measure a second energy level of at least one of a tracking reference signal (TRS) or a synchronization signal block (SSB). The UE may determine, based at least in part on the first energy level and the second energy level, a DMRS signal-to-noise ratio (SNR). The UE may perform, based at least in part on the DMRS SNR, channel estimation for a physical channel associated with a communication to determine an estimated channel. The UE may perform, based at least in part on the estimated channel, demodulation processing for the communication. Numerous other aspects are described.
    Type: Application
    Filed: January 12, 2022
    Publication date: July 14, 2022
    Inventors: Jae Won YOO, Hari SANKAR, Alexei Yurievitch GOROKHOV, Ashok MANTRAVADI, Weng Chon AO, Paolo MINERO, Abhinav SRIDHAR, Shriram SWAMINATHAN, Gi Hong SONG
  • Patent number: 11382118
    Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for minimum scheduling delay signaling.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: July 5, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Pui Lok Ang, Joseph Binamira Soriaga, Huilin Xu, Heechoon Lee, Hari Sankar
  • Publication number: 20220190958
    Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.
    Type: Application
    Filed: December 20, 2021
    Publication date: June 16, 2022
    Inventors: Jing Jiang, Gabi Sarkis, Yang Yang, Shrinivas Kudekar, Joseph Binamira Soriaga, Hari Sankar, Changlong Xu, Chao Wei
  • Patent number: 11330604
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first slot format configuration for a first cell associated with a first radio access technology (RAT) and a first radio frequency spectrum band that conflicts with a second slot format configuration for a second cell associated with a second RAT and a second radio frequency spectrum band during at least a portion of a transmission time interval (TTI). The UE may determine that the first cell has a priority over the second cell, based on the configured slot formats or based on the radio frequency bands, and may drop a communication on the second cell based on the identified priority. The UE may then communicate during at least a portion of the TTI on the first cell while the UE drops a communication on the second cell.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: May 10, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Heechoon Lee, Peter Gaal, Wanshi Chen, Hari Sankar
  • Patent number: 11296823
    Abstract: A new radio (NR) bit prioritization procedure that may be executed by a UE and a base station is disclosed, resulting in transmission and reception of modulation symbols having prioritized bits. For example, a transmitter may encode a code block using low-density parity-check code to generate a stream of encoded bits. The transmitter may arrange the encoded bits in one or more modulation symbols according to a relative priority of the encoded bits. The highest priority bits may be located in the most significant bits of the modulation symbol, and therefore be less likely to experience errors. A receiver may receive the modulation symbols and reorder the encoded bits according to the coding scheme based on the relative priority prior to decoding the encoded bits. The prioritization of the bits within the modulation symbols may provide improved block error rates over sequential mapping of encoded bits to symbols.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: April 5, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Hobin Kim, Hari Sankar, Alexei Yurievitch Gorokhov, Michael Lee McCloud, Joseph Binamira Soriaga
  • Publication number: 20220094511
    Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for downlink control information (DCI) communication and processing. One example method generally includes determining a limit, between a transmission time of a control channel carrying a DCI of a plurality of DCI and a time of an event enabled by the DCI, of a quantity of the plurality of DCI in a frame, generating a frame comprising the plurality of DCI in accordance with the determined limit, and transmitting the frame to a user-equipment (UE).
    Type: Application
    Filed: December 1, 2021
    Publication date: March 24, 2022
    Inventors: Joseph Binamira SORIAGA, Huilin XU, Heechoon LEE, Peter Pui Lok ANG, Hari SANKAR
  • Publication number: 20220086844
    Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for mitigating interference caused by legacy reference signals from neighbor cells (e.g., LTE cell-specific reference signals) to non-legacy downlink transmissions in a serving cell (e.g., NR/5G PDSCH transmissions).
    Type: Application
    Filed: September 17, 2021
    Publication date: March 17, 2022
    Inventors: Faris RASSAM, Hobin KIM, Hari SANKAR, Alexei Yurievitch GOROKHOV
  • Publication number: 20220078710
    Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to reference signal (RS) designs that allow for tracking loop updates and paging of UEs using various RSs. One example method includes identifying reference signal (RS) monitoring occasions for a user equipment (UE) in an idle or inactive mode; and transmitting, to the UE, reference signals in the identified RS monitoring occasions, the RS monitoring occasions being associated with RS for tracking purposes and RS for an indication the UE is to wake up to process additional signaling.
    Type: Application
    Filed: August 12, 2021
    Publication date: March 10, 2022
    Inventors: Huilin Xu, Peter Gaal, Peter Pui Lok Ang, Alexei Yurievitch Gorokhov, Le Liu, Wooseok Nam, Heechoon Lee, Hari Sankar, Changhwan Park, Yuchul Kim
  • Publication number: 20220078665
    Abstract: Methods, systems, and devices for wireless communication are described that provide for generation of an encoded transport block (TB) that includes a number of systematic code blocks (CBs) and a number of parity CBs. The systematic CBs may be transmitted to a receiver, and the receiver may attempt to decode the systematic CBs. In some cases, one or more parity CBs may be transmitted with the systematic CBs, and the systematic CBs may be successfully decoded even in the event that one or more of the systematic CBs are not successfully received. In some cases, a receiver may provide feedback that requests that additional CBs be transmitted to decode the systematic CBs that were received, and it is not necessary to retransmit the missing systematic CBs. In some cases, a quantized value of a number of additional CBs needed to decode the TB may be transmitted.
    Type: Application
    Filed: November 15, 2021
    Publication date: March 10, 2022
    Inventors: Jing Jiang, Seyedkianoush Hosseini, Huang Luo, Joseph Binamira Soriaga, Hari Sankar
  • Publication number: 20220070807
    Abstract: A device may selectively listen for a tracking reference signal (TRS) during connected mode discontinuous reception (CDRx) based on whether the device is to switch between repeaters of a base station (such as during travel). A device may determine whether the device is in a high speed train (HST) scenario (such as based on a difference in frequency errors generated using a synchronization signal block (SSB) and generated using a TRS, based on a trajectory of a frequency error or a frequency error difference over time, based on instantaneous frequency errors, etc.). When the device is in a HST scenario, the device listens for a TRS during CDRx, and the device generates a frequency error using the TRS. When the device is not in a HST scenario, the device prevents listening for a TRS during CDRx (with a SSB received during CDRx to be used to generate a frequency error).
    Type: Application
    Filed: August 18, 2021
    Publication date: March 3, 2022
    Inventors: Chinmay Shankar VAZE, Alexei Yurievitch Gorokhov, Yongle Wu, Paolo Minero, Hari Sankar, Ashok Mantravadi, Raghu Narayan Challa, Arvind Vardarajan Santhanam
  • Publication number: 20220053512
    Abstract: A user equipment (UE) receives, from a base station, a message including at least one reporting configuration and resource configuration for a number of channel state information-interference measurement (CSI-IM) resource patterns associated with a first radio access technology (RAT). Each of the configured CSI-IM resource patterns corresponds to a time and frequency location in a resource block of a neighbor cell associated with a second RAT. The UE transmits one or more CSI reports based on the reporting configuration(s) and the resource configuration(s).
    Type: Application
    Filed: August 4, 2021
    Publication date: February 17, 2022
    Inventors: Faris RASSAM, Hobin KIM, Alexei Yurievitch GOROKHOV, Hari SANKAR
  • Publication number: 20220052786
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine to decode or refrain from decoding a transport block (TB) transmitted from a base station based on a decodability condition. The decodability condition may include whether an effective UE throughput for decoding the TB is greater than a predetermined decoding throughput threshold or not. If the effective UE throughput is greater than the predetermined decoding throughput threshold, the UE may refrain from decoding the TB. In some cases, the TB may be a subsequent transmission from the base station based on an initial transmission not being correctly decoded, and the UE may refrain from decoding the subsequent transmission.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Inventors: Gabi Sarkis, Joseph Binamira Soriaga, Peter Gaal, Hari Sankar, Alexei Yurievitch Gorokhov
  • Patent number: 11246107
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a set of carriers configured for communications between the UE and one or more transmission reception points (e.g., a set of transmission points). The UE may receive multiple communications over different carriers and determine a time difference or delay between two of the carriers (e.g., a first carrier and a second carrier). Based on the time difference and a time difference threshold, the UE may perform a throughput degradation procedure such as transmitting a report indicating the time difference, transmitting a feedback report with channel quality information determined based on the time difference, etc.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: February 8, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Valentin Alexandru Gheorghiu, Hari Sankar, Gaurav Nigam, Peter Gaal
  • Patent number: 11239947
    Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: February 1, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Jiang, Gabi Sarkis, Yang Yang, Shrinivas Kudekar, Joseph Binamira Soriaga, Hari Sankar, Changlong Xu, Chao Wei
  • Publication number: 20210409066
    Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.
    Type: Application
    Filed: August 31, 2021
    Publication date: December 30, 2021
    Applicant: NextNav, LLC
    Inventors: Arun RAGHUPATHY, Ganesh PATTABIRAMAN, Subramanian S. MEIYAPPAN, Hari SANKAR
  • Patent number: 11212053
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus maybe a base station or a UE. In an aspect, the apparatus may determine locations for a number of DM-RS symbols to be transmitted in a scheduling unit of a channel configured in a slot/mini-slot, where a last DM-RS symbol maybe positioned one symbol prior to a last symbol carrying scheduled data. In another aspect, the apparatus may determine the locations for the DM-RS symbols based on a selection between a first set of predetermined DM-RS positions and a second set of predetermined DM-RS positions. In another aspect, the apparatus may determine the locations for the DM-RS symbols based on a set number of symbols, wherein the determined locations are spaced apart according to the set number of symbols. The apparatus may transmit the DM-RS symbols based on the determined locations.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: December 28, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Alexandros Manolakos, Jae Won Yoo, Hari Sankar, Yi Huang, Wanshi Chen, Juan Montojo, Peter Gaal
  • Patent number: 11212062
    Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for downlink control information (DCI) communication and processing. One example method generally includes determining a limit, between a transmission time of a control channel carrying a DCI of a plurality of DCI and a time of an event enabled by the DCI, of a quantity of the plurality of DCI in a frame, generating a frame comprising the plurality of DCI in accordance with the determined limit, and transmitting the frame to a user-equipment (UE).
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: December 28, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph Binamira Soriaga, Huilin Xu, Heechoon Lee, Peter Pui Lok Ang, Hari Sankar
  • Patent number: 11201691
    Abstract: Methods, systems, and devices for wireless communication are described. To encode a vector of bits using a polar code, an encoder may allocate information bits of the vector to polarized bit-channels associated with a channel (e.g., a set of unpolarized bit-channels) used for a transmission. In some cases, the polarized bit-channels may be partitioned into groups associated with different values of some associated reliability metric (s). The information bits may be allocated to the polarized bit-channels based on the reliability metrics of the different polarized bit-channels and the overall capacity of a transmission. That is, the bit locations of a transmission may depend on the reliability metrics of different polarized bit-channels and the overall capacity of the transmission. To facilitate puncturing, the overall capacity of the transmission may be adjusted and the unpolarized bit-channels may be partitioned into polarized bit-channels based on the adjusted capacity.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: December 14, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Yang Yang, Jing Jiang, Gabi Sarkis, Chao Wei, Jian Li, Hari Sankar, Changlong Xu, Joseph Binamira Soriaga