Patents by Inventor Sudheer A. Grandhi

Sudheer A. Grandhi 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).

  • Patent number: 11006469
    Abstract: A method and apparatus may be used to establish a communication link between devices such as VHT access points (APs) or VHT wireless transmit/receive units (WTRUs). For example, an AP or a WTRU may transmit management action request frames such as Association, Direct Link Setup (DLS) or Tunneled Direct Link Setup (TDLS) request frames. The management action frame may include VHT Capability information of the AP or the WTRU. In response to the management action request frame, the receiving AP or WTRU may transmit management action response frames to establish a communication link. Existing 802.11 management action frames may be used to include the VHT Capability information. The VHT Capability information may be used to implement various VHT features such as channel configurations or Beamforming.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: May 11, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventor: Sudheer A. Grandhi
  • Patent number: 10990749
    Abstract: A messaging system supports a presentation session with participants of the presentation, a presenter and one or more audience members. The messaging system allows the participants to share messages and documents via respective client/mobile devices. An application on each mobile device allows the audience member to peruse and comment on document portions (e.g., pages, images, or slides) being presented. The presentation sequence for the document portions can be managed by the presenter, or document perusal can be decoupled from the presentation sequence to allow audience members to focus on past or future document portions. Comments of the audience member or other participants can be linked to corresponding document portions.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: April 27, 2021
    Assignee: Zoho Corporation Private Limited
    Inventors: Sridhar Vembu, Arthur J. Behiel, Sudheer A. Grandhi
  • Publication number: 20210081161
    Abstract: A system and method for communicating a multimedia presentation between a presenter and an audience is described. Services provided via a network facilitate the communication, and include real-time determination of remaining portions of a presentation responsive to “on the fly” presentation modifications, automated filtering and prioritization of audience feedback to a presenter, integration with one or more customer data resources, and repositioning of a shared electronic pointer by reorienting a wireless handheld presenter device.
    Type: Application
    Filed: November 25, 2020
    Publication date: March 18, 2021
    Inventors: Vijaykumar Rajendran, Rajendran Dandapani, Sridhar Vembu, Karthikeyan Jambulingam, Sudheer A. Grandhi, Ramakrishna Raju Vegesna
  • Patent number: 10925088
    Abstract: Enhanced protocols and devices may be used to alleviate loss of spectrum efficiency in wideband transmission. The protocols may implement a wideband transmission opportunity (TXOP) truncation where one or more of the channels involved in communication over the wideband are released. In one scenario, an access point (AP) may receive, from a wireless transmit receive unit (WTRU), a first CF-End frame that includes a duration field and a basic service set identifier (BSSID) field that includes an individual/group bit. On a condition that the individual/group bit of the BSSID field has a value of one (1), the AP may determine that a scrambling sequence of the first CF-End frame indicates a bandwidth associated with a transmit opportunity (TXOP) being truncated by the WTRU. The AP may then transmit a second CF-End frame at the bandwidth indicated by the scrambling sequence of the first CF-End frame.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: February 16, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Bhaskar M. Anepu, Sudheer A. Grandhi, Xiaofei Wang
  • Publication number: 20200413318
    Abstract: A method and apparatus are provided for processing a Class-3 MAC Data frame. The Class-3 MAC Data frame may include a Type field, a Subtype field, and a Class-3 MAC Data frame-specific MAC subheader that includes a basic service set identifier (BSSID) field, an association identifier (AID) field, and a direction indicator. A station (STA) may determine the intended recipient of the Class-3 MAC Data frame based on the BSSID field, the AID field, and the direction indicator.
    Type: Application
    Filed: September 14, 2020
    Publication date: December 31, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Lei Wang, Sudheer A. Grandhi
  • Patent number: 10877714
    Abstract: A system and method for communicating a multimedia presentation between a presenter and an audience is described. Services provided via a network facilitate the communication, and include real-time determination of remaining portions of a presentation responsive to “on the fly” presentation modifications, automated filtering and prioritization of audience feedback to a presenter, and integration with one or more customer data resources.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: December 29, 2020
    Assignee: Zoho Corporation Private Limited
    Inventors: Vijaykumar Rajendran, Rajendran Dandapani, Sridhar Vembu, Karthikeyan Jambulingam, Sudheer A. Grandhi
  • Patent number: 10873907
    Abstract: A method and apparatus may be used in wireless communications. The apparatus may be an access point (AP), and may transmit a power save frame. The power save frame may include one or more Uplink (UL) Transmission Times (ULT)s. The apparatus may determine that a station (STA) did not transmit during its respective ULT. The AP may transmit another power save frame. The other power save frame may include a modified ULT. The modified ULT may be for a STA that did not transmit during its respective ULT. The other power save frame may include an unmodified ULT. The unmodified ULT may be for a STA that did not transmit.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: December 22, 2020
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Mohammed Sammour, Sudheer A. Grandhi, Robert L. Olesen
  • Publication number: 20200396043
    Abstract: A method performed by a STA may comprise transmitting a first negotiation message to an AP and receiving a second negotiation message from the AP. The first negotiation message and the second negotiation message may negotiate a block acknowledgement agreement between the STA and the AP. The method may further comprise receiving a data unit, from the AP, the data unit having a duration field indicating a duration of a block-ACK frame. The duration of the block-ACK frame may be determined based on the negotiated block ACK agreement. A block-ACK frame may be transmitted within the duration indicated by the duration field.
    Type: Application
    Filed: September 1, 2020
    Publication date: December 17, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Sudheer A. Grandhi
  • Publication number: 20200350979
    Abstract: A method performed by STA may comprise receiving, from a first AP, a first beacon frame comprising a first relay information element including a first field that indicates whether a root AP BSSID field is included in the first relay information element, determining that a first root AP BSSID field is included in the first relay information element and determining that the first AP is a relay AP of a root AP identified by the first root AP BSSID field. The method may further comprise receiving, from a second AP, a second beacon frame comprising a second relay information element including a second field that indicates whether a root AP BSSID is included in the second relay information element and determining that a root AP BSSID field is not included in the second information element and determining that the second AP is a root AP.
    Type: Application
    Filed: July 21, 2020
    Publication date: November 5, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Guodong Zhang, Xiaofei Wang, Hanqing Lou, Sudheer A. Grandhi
  • Publication number: 20200305078
    Abstract: A method and apparatus may be used for assigning groups of stations in wireless communications to one or more groups. Groups may be assigned by an access point (AP) based on information received from a station (STA). Group information may be signaled to each station and a group identifier may be indicated in a frame. The group information may be applied to a performance enhancement, for example power savings for the station, wherein the station enters a power saving mode on a condition that the station determines that it is not a member of the group.
    Type: Application
    Filed: June 9, 2020
    Publication date: September 24, 2020
    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Mohammed Sammour, Sudheer A. Grandhi, Arty Chandra
  • Publication number: 20200302107
    Abstract: A messaging system supports a presentation session with participants of the presentation, a presenter and one or more audience members. The messaging system allows the participants to share messages and documents via respective client/mobile devices. An application on each mobile device allows the audience member to peruse and comment on document portions (e.g., pages, images, or slides) being presented. The presentation sequence for the document portions can be managed by the presenter, or document perusal can be decoupled from the presentation sequence to allow audience members to focus on past or future document portions. Comments of the audience member or other participants can be linked to corresponding document portions.
    Type: Application
    Filed: June 11, 2020
    Publication date: September 24, 2020
    Inventors: Sridhar Vembu, Arthur J. Behiel, Sudheer A. Grandhi
  • Patent number: 10779212
    Abstract: A method and apparatus are provided for processing a Class-3 MAC Data frame. The Class-3 MAC Data frame may include a Type field, a Subtype field, and a Class-3 MAC Data frame-specific MAC subheader that includes a basic service set identifier (BSSID) field, an association identifier (AID) field, and a direction indicator. A station (STA) may determine the intended recipient of the Class-3 MAC Data frame based on the BSSID field, the AID field, and the direction indicator.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: September 15, 2020
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Lei Wang, Sudheer A. Grandhi
  • Patent number: 10764014
    Abstract: A method and apparatus for operation by an access point (AP) is provided. The method may comprise receiving a first frame from a first STA, the first frame including first data and receiving a second frame from a second STA, the second frame including second data. In response to the receiving, an acknowledgement (ACK) frame may be transmitted to the first STA and to the second STA. The ACK frame may be addressed to a broadcast address and include a field which indicates whether the ACK frame is a multiple traffic identifier (multi-TID) block ACK frame format or another ACK frame format.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: September 1, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Sudheer A. Grandhi
  • Publication number: 20200275341
    Abstract: A method and apparatus are disclosed for enabling communications in a wireless local area network (WLAN). A wireless transmit and receive unit (WTRU) may receive, from an access point (AP), a management frame comprising capability information. The capability information may comprise an indication of support for reception via non-contiguous channels. The WTRU may transmit, on a condition that reception via non-contiguous channels is supported, at least one data packet, to the AP, via multiple non-contiguous channels. The multiple non-contiguous channels may be used simultaneously.
    Type: Application
    Filed: May 11, 2020
    Publication date: August 27, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventor: Sudheer A. Grandhi
  • Publication number: 20200252870
    Abstract: A method and apparatus may be used in wireless communications. The apparatus may be an access point (AP), and may transmit a power save frame. The power save frame may include one or more Uplink (UL) Transmission Times (ULT)s. The apparatus may determine that a station (STA) did not transmit during its respective ULT. The AP may transmit another power save frame. The other power save frame may include a modified ULT. The modified ULT may be for a STA that did not transmit during its respective ULT. The other power save frame may include an unmodified ULT. The unmodified ULT may be for a STA that did not transmit.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Mohammed Sammour, Sudheer A. Grandhi, Robert L. Olesen
  • Publication number: 20200252825
    Abstract: A method for receiving a backoff value at a wireless station is presented. A traffic indication map is received at the station, wherein a backoff number is implicitly assigned to the station based on a position of the station within the traffic indication map. The backoff value is determined by multiplying the backoff number by a predetermined time value.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Lei Wang, Sudheer A. Grandhi, Guodong Zhang
  • Patent number: 10720984
    Abstract: A method for receiving data, by an end-STA from a root AP, may comprise receiving, from a relay AP, a first beacon frame comprising a relay information element. The relay information element may include a field which indicates whether a root AP BSSID field indicating a BSSID of the root AP is included in the beacon frame. The end-STA may transmit an association request to the relay AP and may receive an association response from the relay AP if the relay AP is allowed by the root AP to associate with the end-STA. The end-STA may receive, from the relay AP, traffic indication map (TIM) indications, of which at least one of the TIM indications may be for the end-STA. The one of the TIM indications may indicate that the data is available for the end-STA. The end-STA may then receive the data from the relay AP.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: July 21, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Guodong Zhang, Xiaofei Wang, Hanqing Lou, Sudheer A. Grandhi
  • Patent number: 10705784
    Abstract: A system and method for communicating a multimedia presentation between a presenter and an audience is described. Services provided via a network facilitate the communication, and include real-time determination of remaining portions of a presentation responsive to “on the fly” presentation modifications, automated filtering and prioritization of audience feedback to a presenter, and integration with one or more customer data resources.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: July 7, 2020
    Assignee: Zoho Corporation Private Limited
    Inventors: Karthikeyan Jambulingam, Vijaykumar Rajendran, Sridhar Vembu, Sudheer A. Grandhi
  • Patent number: 10705785
    Abstract: Described are an apparatus and method for interactively retrieving data from one or more data sources and rendering the data in a three dimensional (3D) format. The rendering may be displayed on a hand-held device, e.g., a smart phone or tablet computer, or on a remote display device such as another phone, tablet, screen, or a projector. The apparatus and method may operate in response to one or more inputs or orientation sensors, e.g., proximity, gravimeter, gyroscope, photo, and touch sensors.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: July 7, 2020
    Assignee: Zoho Corporation Private Limited
    Inventors: Ramakrishna Raju Vegesna, Sudheer A. Grandhi
  • Publication number: 20200196362
    Abstract: A method and apparatus may be used to establish a communication link between devices such as VHT access points (APs) or VHT wireless transmit/receive units (WTRUs). For example, an AP or a WTRU may transmit management action request frames such as Association, Direct Link Setup (DLS) or Tunneled Direct Link Setup (TDLS) request frames. The management action frame may include VHT Capability information of the AP or the WTRU. In response to the management action request frame, the receiving AP or WTRU may transmit management action response frames to establish a communication link. Existing 802.11 management action frames may be used to include the VHT Capability information. The VHT Capability information may be used to implement various VHT features such as channel configurations or Beamforming.
    Type: Application
    Filed: February 24, 2020
    Publication date: June 18, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventor: Sudheer A. Grandhi