Patents by Inventor Vishnu Vardhan

Vishnu Vardhan 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: 20230228844
    Abstract: A method for real-time THz sensing using true time delay (TTD) is implemented by a base station and includes transmitting, by a transceiver that includes TDD elements and phase shifters configured in the transceiver, simultaneous frequency dependent (SFD) beams to scan an environment at a first granularity to detect a spatial cluster target. Each of the SFD beams corresponds to a different phase angle and different frequency. The method includes determining, among the SFD beams, a subset of beams that detected the spatial cluster target. The method includes beam switching, by the transceiver, using time division multiplexing (TDM) and a TDM bandwidth to scan a portion of the environment at phase angles corresponding to the subset of beams and at a second granularity finer than the first granularity. The method includes combining data received from the SFD beams, by multiple threads that concurrently process data received from the SFD beams.
    Type: Application
    Filed: January 3, 2023
    Publication date: July 20, 2023
    Inventors: Siddharth K. Advani, Shadi Abu-Surra, Gang Xu, Vishnu Vardhan Ratnam
  • Publication number: 20230217428
    Abstract: A wireless communication device can flexibly change subcarrier spacing (SCS) and/or cyclic prefix (CP) in wireless communication. The wireless communication device can transmit, in a first sidelink resource of a sidelink resource pool, a first sidelink transmission using a first configuration of suhcarrier spacing (SCS) and cyclic prefix (CP). The wireless communication device can further transmit, in a second sidelink resource of the sidelink resource pool., a second sidelink transmission using a second configuration of SCS and CP, the second configuration being different from the first configuration in terms of at least one of an SCS or a CP. The techniques allow more efficient switching between SCS and CP configurations withing a resource pool, in the same bandwidth part.
    Type: Application
    Filed: January 4, 2022
    Publication date: July 6, 2023
    Inventors: Chiranjib SAHA, Le LIU, Alberto RICO ALVARINO, Umesh PHUYAL, Kazuki TAKEDA, Vishnu Vardhan CHETLUR RAVI, Peter GAAL, Xiao Feng WANG
  • Publication number: 20230189023
    Abstract: Methods and apparatuses for facilitating a primary link change procedure for mobile AP MLD are provided. A method for wireless communication performed by an access point (AP) multi-link device (MLD), the AP MLD comprising APs forming a mobile AP MLD, the method comprising: forming links with corresponding stations (STAs) associated with a non-AP MLD; instructing the APs to form a first link and a second link with the corresponding STAs; designating the first link as a primary link and the second link as a non-primary link; determining that the primary link is experiencing degradation; and in response to determining that the primary link is experiencing degradation, effecting a change in the primary link designation, or implementing a channel change procedure to change a channel within the primary link.
    Type: Application
    Filed: November 14, 2022
    Publication date: June 15, 2023
    Inventors: Peshal Nayak, Rubayet Shafin, Boon Loong Ng, Vishnu Vardhan Ratnam, Ahmed Atef Ibrahim Ibrahim
  • Publication number: 20230189359
    Abstract: Methods and apparatuses for enabling triggered transmission opportunity (TXOP) sharing for peer-to-peer (P2P) communication during a target wake time (TWT) service period (SP) in a wireless local area network. A wireless station (STA) device comprises a transceiver and a processor operably coupled to the transceiver. The transceiver is configured to receive, from an access point (AP), a trigger frame during a TWT SP that corresponds to a trigger-enabled TWT schedule that is configured such that the trigger frame includes an indication that the trigger frame is for a triggered TXOP sharing (TXS) mode that allows P2P communication during the TWT SP. The processor is configured to, based on receipt of the trigger frame, begin a P2P session with a peer STA during the TWT SP.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 15, 2023
    Inventors: Rubayet Shafin, Boon Loong Ng, Vishnu Vardhan Ratnam, Ahmed Atef Ibrahim Ibrahim, Peshal Nayak
  • Patent number: 11674451
    Abstract: A turbine engine including a fan, a nacelle circumscribing at least the fan, a compressor section downstream of the fan, and a conduit defined, at least in part, by the nacelle. The conduit includes a first opening at the compressor section, a second opening downstream of the fan and upstream of the compressor section, and a third opening upstream of the fan. Pressure sensors coupled to the nacelle are communicatively coupled to at least one actuator. The at least one actuator can adjust airflow between the first opening and the second opening, or between the first opening and the third opening. The pressure sensors can provide outputs for generating commands that control the at least one actuator.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: June 13, 2023
    Assignee: General Electric Company
    Inventors: Sai Venkata Karthik Saripella, Vishnu Vardhan Venkata Tatiparthi, Keith Blodgett
  • Publication number: 20230180124
    Abstract: Methods and apparatuses for facilitating the coexistence of target wake time (TWT) and enhanced multi-link single radio EMLSR operations for multi-link devices (MLDs). A non-access point (AP) MLD comprises STAs, each comprising a transceiver configured to form a link with a corresponding AP of an AP MLD, and a processor. At least a subset of the links are EMLSR links. TWT schedules are established for communications on at least two of the EMLSR links, each having a TWT service period (SP). The processor is configured to determine whether there is an overlap between a first of the TWT SPs that corresponds to a first of the EMLSR links and other TWT SPs that correspond to other EMLSR links, based on the overlap existing, prioritize the first EMLSR link based on criteria related to each of the TWT schedules, and initiate a frame exchange on the prioritized EMLSR link.
    Type: Application
    Filed: November 10, 2022
    Publication date: June 8, 2023
    Inventors: Rubayet Shafin, Boon Loong Ng, Vishnu Vardhan Ratnam, Ahmed Atef Ibrahim Ibrahim, Peshal Nayak
  • Publication number: 20230149066
    Abstract: A tissue sensing device for use with an electrosurgical knife is proposed which comprises a proximal end portion, a distal end portion and a grip portion there between. The proximal end portion is configured for attachment to a housing of the electrosurgical knife. The distal end portion is configured for movably supporting a blade of the knife. A distal end of an optical fiber is arranged at the distal end portion of the device and a proximal end of the optical fiber is connectable to an optical console, so that optical measurements can be performed at the distal end portion.
    Type: Application
    Filed: January 12, 2023
    Publication date: May 18, 2023
    Inventors: WALTHERUS CORNELIS JOZEF BIERHOFF, BERNARDUS HENDRIKUS WILHELMUS HENDRIKS, FRANCISCUS MARINUS ANTONIUS MARIA VAN GAAL, TORRE MICHELLE BYDLON, VISHNU VARDHAN PULLY, CHRISTIAN REICH
  • Publication number: 20230133718
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may receive an indication of a first set of resources for feedback and an indication of a second set of resources for feedback, where the second set of resources are associated with a smaller quantity of cyclic shifts than the first set of resources. Accordingly, the mobile station may transmit feedback on either the first set of resources or the second set of resources based at least in part on a distance associated with the feedback. As an alternative, the mobile station may compute a timing advance associated with transmission of feedback. Accordingly, the mobile station may feedback that is shifted in time according to the timing advance. Numerous other aspects are described.
    Type: Application
    Filed: October 28, 2021
    Publication date: May 4, 2023
    Inventors: Chiranjib SAHA, Le LIU, Alberto RICO ALVARINO, Vishnu Vardhan CHETLUR RAVI, Kazuki TAKEDA, Umesh PHUYAL, Xiao Feng WANG, Peter GAAL, Gabi SARKIS
  • Publication number: 20230136372
    Abstract: A method includes determining one or more delay values and one or more phase shift values for generation of multiple desired frequency-dependent analog beams. The method also includes configuring one or more true-time delay (TTD) elements and one or more phase shifters of a transceiver based on the one or more delay values and the one or more phase shift values, the transceiver having one or more radio-frequency (RF) chains connected to multiple antennas via the one or more TTD elements and the one or more phase shifters. The method also includes operating the transceiver to generate the multiple desired frequency-dependent analog beams.
    Type: Application
    Filed: October 19, 2022
    Publication date: May 4, 2023
    Inventors: Vishnu Vardhan Ratnam, Shadi Abu-Surra, Jianhua Mo, Gang Xu, Jin Yuan, Ahmad AlAmmouri, Boon Loong Ng, Jianzhong Zhang
  • Publication number: 20230126846
    Abstract: Methods and apparatuses for facilitating the reception of group-addressed frames by multi-link devices (MLDs). A non-access point (AP) MLD comprises STAs, each comprising a transceiver configured to form a link with a corresponding AP of an AP MLD, and a processor. Each link has an associated predetermined time at which a group-addressed frame is expected to be received on the link, and a subset of the links are constrained links configured to operate in a constrained mode of operation. The processor is configured to, while the constrained links are operating in an active listening state in the constrained mode, determine to listen for the group-addressed frame on a first of the constrained links at the associated predetermined time, and after reception of the group-addressed frame on the first constrained link, return to listening on all of the constrained links in the constrained mode.
    Type: Application
    Filed: October 11, 2022
    Publication date: April 27, 2023
    Inventors: Vishnu Vardhan Ratnam, Boon Loong Ng, Ahmed Atef Ibrahim Ibrahim, Peshal Nayak, Rubayet Shafin
  • Patent number: 11638319
    Abstract: Methods and apparatuses for handling radio link failure (RLF) in a wireless communication network. A method for operating a base station (BS) includes detecting occurrence of a RLF on a backhaul link with a parent BS of the BS and transmitting to a wireless communication device connected to the BS a first notification of the RLF indicating to hold data to be transmitted from the wireless communication device to the BS. The method further includes determining whether connection to a core network entity in the wireless communication network can be reestablished and transmitting to the wireless communication device a second notification based on the reestablishment determination.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: April 25, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeongho Jeon, Vishnu Vardhan Ratnam, Joonyoung Cho
  • Patent number: 11634992
    Abstract: An air turbine starter comprising a housing defining an inlet, an outlet, and a flow path, a turbine having a rotor with circumferentially spaced blades extending into the flow path, a drive shaft operably coupled to and rotating with the rotor, and at least one vane located within the flow path, upstream of the blades. The at least one blade being defined by an acute axial angle and an acute tangential angle.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: April 25, 2023
    Assignee: Unison Industries, LLC
    Inventors: Milind Chandrakant Dhabade, Vishnu Vardhan Venkata Tatiparthi, Ramana Reddy Kollam, Shiloh Montegomery Meyers, Saurya Ranjan Ray, Subrata Nayak
  • Publication number: 20230121452
    Abstract: Methods and apparatuses for scheduled link muting at an access point. An access point (AP) multi-link device (MLD) comprises a transceiver and a processor operably coupled to the transceiver. The processor is configured to generate an information element (IE) configured to indicate unavailability of a link, the information element comprising an indication of a duration of link disablement; and when a value of the indicated duration of the link disablement has elapsed, enable the link, wherein the IE is included in a broadcast frame, and the transceiver is configured to transmit the broadcast frame.
    Type: Application
    Filed: November 4, 2022
    Publication date: April 20, 2023
    Inventors: Vishnu Vardhan Ratnam, Ahmed Atef Ibrahim Ibrahim, Rubayet Shafin, Peshal Nayak, Boon Loong Ng
  • Publication number: 20230123242
    Abstract: Methods for providing a location of an object or objects of interest that may be performed by a processor of a computing device may include generating a map of an environment around the computing device by a first simultaneous location and mapping (SLAM) operation using information received from the optical sensor, identifying an object of interest in the environment of the computing device by an object recognition operation using information received from the optical sensor, determining a location of the object or objects of interest in the environment, and presenting the determined location of the object or objects of interest in the environment in response to a trigger event correlated to the object or objects of interest.
    Type: Application
    Filed: October 6, 2021
    Publication date: April 20, 2023
    Inventors: Sumeet Kumar Sahu, Vishnu Vardhan Kasilya Sudarsan, Tapan Kumar Sahu
  • Publication number: 20230115377
    Abstract: Methods and apparatuses for enhancing advertisement of restricted target wake time (TWT) schedules by access points (APs) and improving selection of restricted TWT schedules by stations (STAs) in a wireless local area network. A wireless STA apparatus comprises a transceiver and a processor operably coupled to the transceiver. The transceiver is configured to receive, from an AP, a restricted TWT advertisement that includes a restricted TWT schedule and additional information about the restricted TWT schedule. The processor is configured to determine, based on the additional information, whether to refrain from requesting to become a member of the restricted TWT schedule.
    Type: Application
    Filed: November 4, 2022
    Publication date: April 13, 2023
    Inventors: Rubayet Shafin, Boon Loong Ng, Peshal Nayak, Ahmed Atef Ibrahim Ibrahim, Vishnu Vardhan Ratnam
  • Publication number: 20230109759
    Abstract: Methods and apparatuses for facilitating recovery from loss of medium synchronization for multi-link devices (MLDs) and renegotiating traffic identifier (TID)-to-link mapping for enhanced multi-link single radio (EMLSR) operation of MLDs in a wireless local area network. A non-access point (AP) MLD comprises STAs, each comprising a transceiver configured to form a link with a corresponding AP of an AP MLD, and a processor operably coupled to the STAs. A subset of the links are EMLSR links that are configured to operate in an EMLSR mode of operation. The processor is configured to generate, based on a determination that an EMLSR frame exchange sequence is occurring on a first one of the EMLSR links, a request for AP-assisted medium synchronization recovery (AAR) for a set of the other EMLSR links. At least one of the transceivers is further configured to transmit, to the AP MLD, the request for AAR.
    Type: Application
    Filed: September 23, 2022
    Publication date: April 13, 2023
    Inventors: Vishnu Vardhan Ratnam, Peshal Nayak, Boon Loong Ng, Rubayet Shafin, Ahmed Atef Ibrahim Ibrahim
  • Publication number: 20230109057
    Abstract: A method includes obtaining Wi-Fi channel state information (CSI) data on a transmit antenna/receive antenna pair over a time period. The method also includes removing one or more anomalies present in the CSI data. The method also includes performing at least one of phase compensation and amplitude compensation on the CSI data to generate clean CSI data. The method also includes detecting a number of distinct respiration rates based on the clean CSI data. The method also includes, for each of the distinct respiration rates, determining a number of people that have that distinct respiration rate.
    Type: Application
    Filed: September 28, 2022
    Publication date: April 6, 2023
    Inventors: Hao-Hsuan Chang, Hao Chen, Vishnu Vardhan Ratnam, Abhishek Sehgal, Jianzhong Zhang
  • Publication number: 20230103061
    Abstract: Methods and apparatuses for facilitating the coexistence of enhanced multi-link single radio (EMLSR) operation with target wake time (TWT) operation in a wireless local area network. A non-access point (AP) MLD comprises STAs, each comprising a transceiver that forms a link with a corresponding AP of an AP MLD, and a processor. A restricted TWT (R-TWT) schedule is established on a first link, and a first STA on that link is a member of an R-TWT service period (SP) on that link. A second STA on a second link is not a member of any R-TWT SP on that link that overlaps with the R-TWT SP on the first link. The processor transitions the non-AP MLD into EMLSR operation wherein the first and second links form an EMLSR link pair, determines that a transmission opportunity (TXOP) has begun on the second link, and coordinates between the STAs such that a frame exchange sequence with the AP MLD on the second link during the TXOP does not overlap with the R-TWT SP on the first link.
    Type: Application
    Filed: September 19, 2022
    Publication date: March 30, 2023
    Inventors: Rubayet Shafin, Boon Loong Ng, Vishnu Vardhan Ratnam, Ahmed Atef Ibrahim Ibrahim, Peshal Nayak
  • Publication number: 20230088404
    Abstract: Methods and apparatuses for facilitating enhanced channel quality measurements on links of a multi-link device (MLD) in a wireless local area network. A non-access point (AP) MLD comprises stations (STAs), each comprising a transceiver configured to form a link with a corresponding AP affiliated with an AP MLD and receive, over the link, a channel sounding signal. The non-AP MLD further comprises a processor configured to determine, based on the channel sounding signal received at a first time over a first one of the links, an initial channel quality indicator (CQI) value for the first link, and determine, based on interference caused on the first link by a second one of the links at a second time, a CQI offset value for the first link relative to the initial CQI value. The transceivers are configured to transmit, to the AP MLD, the initial CQI value and the CQI offset value.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 23, 2023
    Inventors: Rubayet Shafin, Ahmed Atef Ibrahim Ibrahim, Peshal Nayak, Boon Loong Ng, Vishnu Vardhan Ratnam, Junsu Choi
  • Publication number: 20230074011
    Abstract: Aspects include systems, methods, devices, and non-transitory processor readable storage mediums for managing a broadcast signal of an apparatus for wireless communication. Various aspects may enable an apparatus to send a message using either omnidirectional transmissions or beamformed transmission based on whether the altitude of the apparatus meets an altitude threshold. In some implementations and aspects, the processor of the apparatus may determine a type of the message and may select the altitude threshold based on the determined message type. In some implementations and aspects, the processor of the apparatus may send the message using beamformed transmissions in response to determining that the message is intended for reception by a certain type of second apparatus.
    Type: Application
    Filed: September 5, 2021
    Publication date: March 9, 2023
    Inventors: Vishnu Vardhan CHETLUR RAVI, Alberto RICO ALVARINO, Le LIU, Kazuki TAKEDA