Patents by Inventor Gokul SRIDHARAN

Gokul SRIDHARAN 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: 20240422705
    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a base station may update its channel state information (CSI) on a sidelink between a first user equipment (UE) and one or more second UEs aperiodically using control information to trigger the CSI reporting process. The aperiodic CSI process may include the base station transmitting a timing requirement and control information to a UE. The control information contains a CSI request may be received and decoded at the UE. According to the CSI request, the first UE may transmit a reference signal on the sidelink for the second UE(s) to measure. The UE(s) may generate and transmit a CSI report on the sidelink to first UE, and the first UE may aggregate the received CSI report(s) and transmit them to the base station within the time period specified by the timing requirement received in the control information.
    Type: Application
    Filed: June 19, 2024
    Publication date: December 19, 2024
    Inventors: Alexandros MANOLAKOS, Seyedkianoush HOSSEINI, Gokul SRIDHARAN
  • Publication number: 20240422774
    Abstract: Aspects presented herein may enable a base station to perform demodulation reference signal (DMRS)-based channel sounding for a channel between the base station and a UE, such that the base station may configure a more suitable precoding for coherent UL multiple input multiple output (MIMO) transmission(s) of the UE without increasing communication overhead significantly or at all. In one aspect, a base station performs channel sounding for a channel based on a set of physical uplink shared channel (PUSCH) DMRS received from a UE via the channel. The base station selects a precoding to be used by the UE for a subsequent PUSCH transmission via the channel based on the channel sounding. The base station transmits, for the UE via a physical downlink control channel (PDCCH), a transmit precoder matrix indicator (TPMI) indicating the selected precoding, where the PDCCH schedules the subsequent PUSCH transmission for the UE.
    Type: Application
    Filed: June 13, 2023
    Publication date: December 19, 2024
    Inventors: Jae Ho RYU, Gokul SRIDHARAN, Hari SANKAR, Rebecca Wen-Ling YUAN
  • Publication number: 20240414732
    Abstract: Aspects described herein relate to monitoring a control channel search space for downlink control information (DCI) based on at least two DCI formats associated with switching to one or more uplink frequency resources of multiple configured uplink frequency resources, decoding the DCI received in the control channel search space based on one of the at least two DCI formats and according to a size associated with the one of the at least two DCI formats, including decoding a field from the DCI, and switching to the one or more uplink frequency resources indicated in a frequency resource switching table based on the field. Other aspects relate to encoding and transmitting the DCI.
    Type: Application
    Filed: June 7, 2023
    Publication date: December 12, 2024
    Inventors: Kazuki TAKEDA, Peter GAAL, Mostafa KHOSHNEVISAN, Gokul SRIDHARAN
  • Patent number: 12167463
    Abstract: Certain aspects of the present disclosure provide techniques for channel repetition. One example method by a user equipment (UE) may include receiving a first indication of one or more first slots that are counted for one or more repetitions of a random access channel (RACH) message and a second indication of a number of the one or more repetitions, each of the repetitions of the RACH message being during a slot available for uplink communication; and transmitting, to a base station, the RACH message and the one or more repetitions in accordance with the first indication and the second indication.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: December 10, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Mahmoud Taherzadeh Boroujeni, Tao Luo, Gokul Sridharan
  • Publication number: 20240396687
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information that configures one or more sounding reference signal (SRS) resource sets that includes one or more SRS resources associated with a full duplex (FD) set of symbols and one or more SRS resources associated with a non-FD set of symbols. The UE may receive at least one of a radio resource control communication or a downlink control information communication indicating at least one of the one or more SRS resources that are to be used for an uplink transmission repetition. The UE may transmit the uplink transmission repetition in one of: only the FD set of symbols, only the non-FD set of symbols, or both the FD set of symbols and the non-FD set of symbols. Numerous other aspects are described.
    Type: Application
    Filed: May 22, 2023
    Publication date: November 28, 2024
    Inventors: Muhammad Sayed Khairy ABDELGHAFFAR, Mostafa KHOSHNEVISAN, Abdelrahman Mohamed Ahmed Mohamed IBRAHIM, Gokul SRIDHARAN, Ahmed Attia ABOTABL
  • Publication number: 20240381363
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a repetition configuration associated with transmitting a plurality of repetitions of an uplink transmission, the repetition configuration including at least one of: offset information indicating an offset between a first repetition of the plurality of repetitions and a second repetition of the plurality of repetitions, starting symbol information indicating a starting symbol of the first repetition and a starting symbol of the second repetition, or size information indicating a size of the first repetition and a size of the second repetition. The UE may transmit at least one repetition of the uplink transmission based at least in part on the repetition configuration. Numerous other aspects are described.
    Type: Application
    Filed: October 13, 2022
    Publication date: November 14, 2024
    Inventors: Ahmed ELSHAFIE, Muhammad Sayed Khairy ABDELGHAFFAR, Alexandros MANOLAKOS, Gokul SRIDHARAN
  • Publication number: 20240381432
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a set of repetitions of a preamble message, wherein the preamble message is a portion of a first random access channel (RACH) message of a RACH procedure. The UE may receive a random access channel response (RAR) message in an RAR window of the RACH procedure, wherein the RAR window is included in a set of RAR windows for monitoring for the RAR message, and wherein at least one RAR window, of the set of RAR windows, starts after transmission of a first repetition, of the set of repetitions, and before transmission of a last repetition of the set of repetitions. Numerous other aspects are described.
    Type: Application
    Filed: May 7, 2024
    Publication date: November 14, 2024
    Inventors: Linhai HE, Sherif ELAZZOUNI, Mahmoud TAHERZADEH BOROUJENI, Gokul SRIDHARAN
  • Patent number: 12143257
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE), that is configured for demodulation reference signal (DMRS) bundling, may receive a control message that schedules first and second sets of repetitions of an uplink transmission. The UE may determine a phase coherency configuration to be applied for DMRS transmissions corresponding to each set of repetitions. The phase coherency configuration may be determined based on a phase coherency capability of the UE, and the phase coherency configuration may specify that phase coherency is to be maintained for one or more of the first set of repetitions separate from one or more of the second set of repetitions. The UE may transmit the first set of repetitions with a first set of demodulation reference signals and the second set of repetitions with a second set of demodulation reference signals in accordance with the phase coherency configuration.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: November 12, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Mostafa Khoshnevisan, Hung Dinh Ly, Gokul Sridharan
  • Patent number: 12143324
    Abstract: Methods, systems, and devices for wireless communications are described. Generally, a base station may configure a user equipment (UE) to perform demodulation reference signal (DMRS) enhancement whereby the UE may transmit physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) repetitions with different DMRS densities (e.g., a first DMRS density configuration having a first or default DMRS pattern within a transmission time interval (TTI) that is higher than a second DMRS density configuration having fewer DMRSs than the normal DMRS pattern or no DMRSs within the TTI). The UE may identify TTIs (e.g., slots) that satisfy one or more phase continuity rules, and may perform DMRS enhancement in the identified TTIs, and may restart a mapping sequence indicated in the DMRS mapping pattern at each bundle interval boundary or when consecutive uplink symbol periods within a bundling interval do not satisfy a phase continuity condition.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: November 12, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Hung Dinh Ly, Gokul Sridharan
  • Patent number: 12137436
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a control message identifying a frequency hop configuration that configures the UE to use frequency hopping when transmitting repetitions of an uplink shared channel transmission. The UE, the base station, or both may determine, based on the UE being configured with the frequency hop configuration, a frequency hop for each repetition of the uplink shared channel transmission. Each frequency hop may be determined based on a corresponding uplink shared channel index for a respective repetition a frequency hop for each repetition of the uplink shared channel transmission. The uplink shared channel index may be an uplink transmission occasion index, or a repetition index. The UE may transmit the repetitions of the uplink shared channel transmission using respective frequency hops in accordance with the determination and the frequency hop configuration.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: November 5, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Hung Dinh Ly, Gokul Sridharan, Yi Huang
  • Publication number: 20240364390
    Abstract: Aspects for enabling Multiple-Input-Multiple-Output (MIMO) communications using a plurality of transmitters across at least two supported frequency bands are disclosed. The apparatus may be a user equipment (UE) that includes, for each UE-supported frequency band, a plurality of transmitters capable when configured of coherently transmitting the received information over the frequency band with information to be transmitted to a base station. The apparatus can identify MIMO coherence capability information for the supported frequency bands on a per-band and a per-band combination basis. The apparatus may determine a proposed transmission configuration based on the MIMO capability information and may report, to the base station, the proposed transmission configuration.
    Type: Application
    Filed: October 2, 2021
    Publication date: October 31, 2024
    Inventors: Yiqing CAO, Peter GAAL, Masato KITAZOE, Yi HUANG, Gokul SRIDHARAN, Alberto RICO ALVARINO, Bin HAN
  • Publication number: 20240349276
    Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may be configured with periodic uplink grants that provide a number of repetitions and a redundancy version (RV) sequence for the repetitions. Prior to the start of an uplink grant period, the UE may determine a set of slots that are available for uplink transmissions in the uplink grant period. Based on the set of slots, the UE may determine a corresponding RV for repetitions of the uplink communication associated with each slot. The slots with uplink transmissions within the uplink grant period may be non-contiguous. Repetitions of an uplink communication may be configured to be transmitted across multiple uplink grant periods, which may be triggered based on a threshold value associated with the repetitions.
    Type: Application
    Filed: April 12, 2024
    Publication date: October 17, 2024
    Inventors: Wei YANG, Gokul SRIDHARAN, Hung Dinh LY, Peter GAAL
  • Publication number: 20240348399
    Abstract: Various aspects relate generally to sounding reference signal (SRS) reference indicators (SRIs) indicating an SRS associated with a transmission configuration to use for transmission of a data channel communication. Some aspects more specifically relate to an SRI indicating an SRS from an SRS resource having a same duplexing type as a slot in which the data channel communication is scheduled. In some aspects, the SRI may indicate an SRS from an SRS resource that is not a most-recent SRS resource based on the most-recent SRS resource having a different duplexing type than the slot in which the data channel communication is scheduled.
    Type: Application
    Filed: March 28, 2024
    Publication date: October 17, 2024
    Inventors: Muhammad Sayed Khairy ABDELGHAFFAR, Abdelrahman Mohamed Ahmed Mohamed IBRAHIM, Mostafa KHOSHNEVISAN, Gokul SRIDHARAN
  • Patent number: 12119974
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling indicating a first set of thresholds corresponding to a first set of reference signal densities and a second set of thresholds corresponding to a second set of reference signal densities. The first set of thresholds may be associated with enabled uplink demodulation reference signal (DMRS) bundling, and the second set of thresholds may be associated with disabled uplink DMRS bundling. The UE may select a reference signal density from the first set or the second set based on a DMRS bundling status and map reference signaling (e.g., a DMRS, a phase tracking reference signal (PTRS), or both) to a set of resources based on the reference signal density. Uplink channel repetitions may occur in disjoint symbols and in such cases, DMRS bundling may be activated when PTRSs between repetitions meet a threshold.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: October 15, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Mahmoud Taherzadeh Boroujeni, Tao Luo, Gokul Sridharan
  • Publication number: 20240340916
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, a downlink control information (DCI) message that schedules a physical uplink shared channel (PUSCH) transmission, wherein the DCI message includes: a waveform selection field that indicates a waveform type associated with the PUSCH transmission, and a sounding reference signal (SRS) resource set indication field that indicates a multiple transmission reception point (mTRP) transmission mode or a single transmission reception point (sTRP) transmission mode associated with the PUSCH transmission. The UE may decode the DCI message based on one or more zero padding types associated with one or more fields in the DCI message that depend on one or more of a value of the waveform selection field or a value of the SRS resource set indication field. Numerous other aspects are described.
    Type: Application
    Filed: February 23, 2024
    Publication date: October 10, 2024
    Inventors: Mostafa KHOSHNEVISAN, Yitao CHEN, Gokul SRIDHARAN
  • Publication number: 20240340063
    Abstract: A user equipment (UE) receives a configuration of a first plurality of subbands having different sizes for channel state information (CSI) reporting. The configuration is for a bandwidth part configured for subband full duplexing with an uplink subband. A size of the subbands in the first plurality of subbands decreases closer in frequency to the uplink subband. The UE transmit a reduced CSI report payload including a plurality of CSI values, the reduced CSI report payload having fewer bits than a size of an absolute CSI value times a number of subbands in the first plurality of subbands. The UE may reduce the number of bits in the CSI report payload using differential CSI values instead of absolute CSI values, reporting CSI values for only a subset of the subbands, or using a fallback subband configuration with equal sized subbands.
    Type: Application
    Filed: April 6, 2023
    Publication date: October 10, 2024
    Inventors: Ahmed Attia ABOTABL, Muhammad Sayed Khairy ABDELGHAFFAR, Gokul SRIDHARAN, Abdelrahman Mohamed Ahmed Mohamed IBRAHIM
  • Publication number: 20240340915
    Abstract: Methods, systems, and devices for wireless communications are described. Techniques described herein support transmission of a transport block over multiple slots (TBoMS) with subband full duplex (SBFD) operation. For example, if a time domain resource allocation for a TBoMS includes both uplink slots and downlink slots configured with an uplink subband, a user equipment (UE) may determine which slots to use in accordance with a scheme for selecting available slots for the TBoMS from indicated candidate slots, and the UE may determine the transport block size based on the selected slots. In some examples, the UE may first determine the quantity of resource elements available in each of the different slot types, and then may determine the transport block size based on the quantity of resource elements available in each of the different slot types and the quantity of each of the different slot types.
    Type: Application
    Filed: April 6, 2023
    Publication date: October 10, 2024
    Inventors: Gokul SRIDHARAN, Muhammad Sayed Khairy ABDELGHAFFAR, Ahmed Attia ABOTABL, Abdelrahman Mohamed Ahmed Mohamed IBRAHIM, Hung Dinh LY
  • Publication number: 20240333557
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that indicates to the UE to apply demodulation reference signal (DMRS) bundling to physical uplink shared channel (PUSCH) transmissions. The UE may maintain phase coherence across multiple PUSCH transmissions, to which the DMRS bundling is applied, to enable joint channel estimation across the multiple PUSCH transmissions. The UE may transmit, based at least in part on the configuration, uplink control information (UCI) that includes a coherence indication. The UE may multiplex the UCI with a PUSCH transmission of the multiple PUSCH transmissions to which the DMRS bundling is applied. The coherence indication may indicate whether the PUSCH transmission is coherent with one or more other PUSCH transmissions, of the multiple PUSCH transmissions, transmitted by the UE. Numerous other aspects are described.
    Type: Application
    Filed: April 10, 2024
    Publication date: October 3, 2024
    Inventors: Hung Dinh LY, Mostafa KHOSHNEVISAN, Gokul SRIDHARAN
  • Publication number: 20240334425
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information scheduling a physical uplink shared channel (PUSCH) transmission at least partially in a sub-band full duplex (SBFD) resource in connection with a random access channel procedure. The UE may transmit the PUSCH transmission on time and frequency (time-frequency) resources that are associated with a sub-band configuration of the SBFD resource. Numerous other aspects are described.
    Type: Application
    Filed: March 29, 2023
    Publication date: October 3, 2024
    Inventors: Muhammad Sayed Khairy ABDELGHAFFAR, Gokul SRIDHARAN, Peter GAAL
  • Patent number: 12108438
    Abstract: A method for wireless communication by a user equipment (UE) includes transmitting, to a base station, a random access preamble to initiate a random access procedure. The method also includes receiving, from the base station based on transmitting the random access preamble, a downlink message comprising a repetition number indicator. The method further includes transmitting a number of repetitions of a physical uplink channel based on the repetition number indicator.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: October 1, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Hung Dinh Ly, Gokul Sridharan, Krishna Kiran Mukkavilli