Patents by Inventor Raghunandan M. Rao

Raghunandan M. Rao 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: 20230039849
    Abstract: An electronic device includes a transceiver and a processor. The processor is operably connected to the transceiver. The processor is configured to transmit, via the transceiver, radar signals for activity recognition. The processor is also configured to identify a first set of features and a second set of features from received reflections of the radar signals, the first set of features indicating whether an activity is detected based on power of the received reflections. Based on the first set of features indicating that the activity is detected, the processor is configured to compare one or more of the second set of features to respective thresholds to determine whether a condition is satisfied. After a determination that the condition is satisfied, the processor is configured to perform an action based on a cropped portion of the second set of features.
    Type: Application
    Filed: May 18, 2022
    Publication date: February 9, 2023
    Inventors: Raghunandan M. Rao, Yuming Zhu, Neha Dawar, Songwei Li, Boon Loong Ng
  • Publication number: 20220373646
    Abstract: A method for contactless vital sign monitoring includes transmitting, via a transceiver, radar signals for object detection. The method also includes generating a clutter removed channel impulse response from received reflections of the radar signals a portion of which are reflected off of a living object. The method further includes identifying a set of range bins corresponding to a position of the living object. Additionally, the method includes identifying a first set of signal components representing a respiration rate of the living object and a second set of signal components representing a heart rate of the living object.
    Type: Application
    Filed: May 19, 2022
    Publication date: November 24, 2022
    Inventors: Hoang Viet Nguyen, Raghunandan M. Rao, Yuming Zhu, Yi Yang, Jiho Shin
  • Patent number: 11343646
    Abstract: An electronic device and a method of the electronic device for performing localization in a wireless communication system are provided. The electronic device and method comprise: receiving, from a plurality of anchor nodes, signals for the localization; performing ranging measurements of the signals based on a range and an angle of arrival (AoA) of the signals; determining whether at least one of the plurality of anchor nodes is not detected based on the ranging measurements; determining, based on a determination that the at least one anchor node is not detected based on the ranging measurements, whether at least one other anchor node in the plurality of anchor nodes is located on a line of sight (LOS) from the electronic device, wherein the LOS is determined based on the AoA of the signals; and performing the localization based on the at least one other anchor node.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: May 24, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Aditya V. Padaki, Boon Loong Ng, Chiranjib Saha, Raghunandan M. Rao, Yi Yang, Moonseok Kang
  • Patent number: 11196470
    Abstract: A method of communicating with UEs located within a serviced area, the method involving: defining a set of differently directed, narrow beams which collectively cover the serviced area; (a) during a first period of operation: (i) cycling through the beams one at a time by separately activating each beam in synchronization with the subframe structure of a signal from the BBU; and (ii) while each beam is activated, initiating channel sounding for all of the UEs in the serviced area; and (b) during a second period of operation immediately following the first period of operation: (i) cycling through all of the beams one at a time by separately activating each beam in synchronization with the subframe structure of the signal from the BBU; and (ii) while each beam is activated, transmitting data over that beam to the UEs in accordance with a scheduling scheme.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: December 7, 2021
    Assignee: Blue Danube Systems, Inc.
    Inventors: Raghunandan M. Rao, Dilip Bethanabhotla, Ramesh Chembil-Palat
  • Publication number: 20210058744
    Abstract: An electronic device and a method of the electronic device for performing localization in a wireless communication system are provided. The electronic device and method comprise: receiving, from a plurality of anchor nodes, signals for the localization; performing ranging measurements of the signals based on a range and an angle of arrival (AoA) of the signals; determining whether at least one of the plurality of anchor nodes is not detected based on the ranging measurements; determining, based on a determination that the at least one anchor node is not detected based on the ranging measurements, whether at least one other anchor node in the plurality of anchor nodes is located on a line of sight (LOS) from the electronic device, wherein the LOS is determined based on the AoA of the signals; and performing the localization based on the at least one other anchor node.
    Type: Application
    Filed: August 20, 2020
    Publication date: February 25, 2021
    Inventors: Aditya V. Padaki, Boon Loong Ng, Chiranjib Saha, Raghunandan M. Rao, Yi Yang, Moonseok Kang
  • Publication number: 20200119790
    Abstract: A method of communicating with UEs located within a serviced area, the method involving: defining a set of differently directed, narrow beams which collectively cover the serviced area; (a) during a first period of operation: (i) cycling through the beams one at a time by separately activating each beam in synchronization with the subframe structure of a signal from the BBU; and (ii) while each beam is activated, initiating channel sounding for all of the UEs in the serviced area; and (b) during a second period of operation immediately following the first period of operation: (i) cycling through all of the beams one at a time by separately activating each beam in synchronization with the subframe structure of the signal from the BBU; and (ii) while each beam is activated, transmitting data over that beam to the UEs in accordance with a scheduling scheme.
    Type: Application
    Filed: October 11, 2019
    Publication date: April 16, 2020
    Inventors: Raghunandan M. Rao, Dilip Bethanabhotla, Ramesh Chembil-Palat