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).

  • RANGE EXTENSION IN WIRELESS LOCAL AREA NETWORKS
    Publication number: 20190215054
    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: Application
    Filed: March 18, 2019
    Publication date: July 11, 2019
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Guodong Zhang, Xiaofei Wang, Hanqing Lou, Sudheer A. Grandhi
  • Method and apparatus for supporting wideband and multiple bandwidth transmission protocols
    Patent number: 10334626
    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: November 30, 2017
    Date of Patent: June 25, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Bhaskar M. Anepu, Sudheer A. Grandhi, Xiaofei Wang
  • METHOD AND APPARATUS FOR EFFICIENT ADDRESSING AND POWER SAVINGS IN WIRELESS COMMUNICATIONS
    Publication number: 20190174407
    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: February 11, 2019
    Publication date: June 6, 2019
    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Mohammed Sammour, Sudheer A. Grandhi, Arty Chandra
  • Methods and apparatus for enhancing electronic presentations with location information
    Patent number: 10275203
    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: July 19, 2016
    Date of Patent: April 30, 2019
    Assignee: Zoho Corporation Private Limited
    Inventors: Bharath Sridhar, Manikandan Vembu, Ramakrishna Raju Vegesna, Vijaykumar Rajendran, Rajendran Dandapani, Sridhar Vembu, Karthikeyan Jambulingam, Sudheer A. Grandhi
  • METHOD AND APPARATUS FOR PROVIDING VERY HIGH THROUGHPUT OPERATION AND CAPABILITY SIGNALING FOR WIRELESS COMMUNICATIONS
    Publication number: 20190124579
    Abstract: A method and apparatus are disclosed for enabling very high throughput (VHT) communications. A wireless transmit and receive unit (WTRU) may receive, from an access point (AP), a management frame comprising VHT capabilities information. The VHT capabilities 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: December 21, 2018
    Publication date: April 25, 2019
    Applicant: InterDigital Patent Holdings, Inc.
    Inventor: Sudheer A. Grandhi
  • NON-LEGACY PREAMBLE FOR WIRELESS LOCAL AREA NETWORKS
    Publication number: 20190109681
    Abstract: Method and apparatus for transmission and reception of a Greenfield preamble are provided. In the method and apparatus, the Greenfield preamble may be a single user (SU) preamble or a multi user (MU) preamble. As an MU preamble, the Greenfield preamble includes a short training field (STF), a first long training field (LTF), a first signal (SIG) field, at least one additional LTF, and a second SIG field. Additionally, the Greenfield preamble may be utilized for efficient transmission and reception of control information to wireless devices, whereby the control information may be indicated using the STF, the first LTF, or the first or second SIG fields.
    Type: Application
    Filed: December 7, 2018
    Publication date: April 11, 2019
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Monisha Ghosh, Nirav B. Shah, Sudheer A. Grandhi, Ronald G. Murias, Guodong Zhang, Xiaofei Wang, Hanqing Lou, Robert L. Olesen
  • Power saving method and apparatus
    Patent number: 10257868
    Abstract: A power saving method performed by a STA may comprise receiving, from an AP, a first beacon comprising a CCC value. The CCC value may be an integer value that represents a configuration instance of the AP. The STA may return from a power saving mode upon receiving the first beacon and receive a second beacon from the AP. The second beacon may be a primary beacon of the AP. The first beacon may comprise an SSID of the AP. The STA may perform an association procedure with the AP upon receiving the first beacon.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: April 9, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Lei Wang, Yousif Targali, Sudheer A. Grandhi, Xiaofei Wang, Guodong Zhang
  • Range extension in wireless local area networks
    Patent number: 10236967
    Abstract: A method and apparatus for use in an IEEE 802.11 root access point (AP) are provided. The method may comprise transmitting, from the root AP to the R-AP, an indication of a number of end-STAs which the R-AP is allowed to associate with. A first message may be received, from the R-AP that enables the root AP to associate the end-STA with the R-AP, the first message including: an indication of a number of information fields in the first message and a number of information fields identified by the indication of the number of information fields. Each information field may include a unique identifier associated with a respective indicated end-STA associated with the R-AP. A second message may be transmitted for the end-STA, from the root AP to the R-AP, and the second message may include the unique identifier.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: March 19, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Guodong Zhang, Xiaofei Wang, Hanqing Lou, Sudheer A. Grandhi
  • Method and system for beacon information provisioning, transmissions and protocol enhancements
    Patent number: 10237818
    Abstract: A method for beacon information provisioning, transmissions and protocol enhancements includes defining multiple level beacons based on the attributes of beacon information fields/elements. A short beacon may be used in addition to a primary beacon in space-time block code (STBC) modes, non-STBC modes and in multiple bandwidth modes. The short beacons may also be used for Fast Initial Link Setup (FILS) and to extend system coverage range. Beacon transmissions may use adaptive modulation and coding set/scheme (MCS).
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: March 19, 2019
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Sudheer A. Grandhi, Monisha Ghosh, Hanqing Lou, Lei Wang, Xiaofei Wang, Guodong Zhang
  • METHOD AND APPARATUS FOR TRANSMISSION MANAGEMENT IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20190069237
    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: October 29, 2018
    Publication date: February 28, 2019
    Applicant: InterDigital Technology Corporation
    Inventors: Mohammed Sammour, Sudheer A. Grandhi, Robert L. Olesen
  • Method and apparatus for efficient addressing and power savings in wireless communications
    Patent number: 10206168
    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: Grant
    Filed: June 1, 2017
    Date of Patent: February 12, 2019
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Mohammed Sammour, Sudheer A. Grandhi, Arty Chandra
  • METHOD AND APPARATUS FOR POWER SAVINGS IN A WIRELESS LOCAL AREA NETWORK
    Publication number: 20190037489
    Abstract: A method and apparatus for power savings in a wireless local area network (WLAN) are disclosed. A station (STA) may receive parameters that associate the STA to a specific group of STAs and perform a channel access during a period that is allowed for the group of STAs based on the parameters. The STA may receive information regarding an access slot that is allowed for the group of STAs and access a channel during the access slot. The STA may receive a schedule for wake up from a doze state and goes in and out of the doze state based on the schedule. A highest channel access priority may be provided to a sensor or meter type of STA. The STA may indicate to an access point (AP) that the STA will not listen to a traffic indication map (TIM) or a delivery TIM (DTIM) in a beacon.
    Type: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Monisha Ghosh, Lei Wang, Nirav B. Shah, Guodong Zhang, Sudheer A. Grandhi
  • GROUP TRANSMISSIONS IN WIRELESS LOCAL AREA NETWORKS
    Publication number: 20190028915
    Abstract: A method for MU MIMO channel sounding by a STA includes receiving, from an AP, sounding information including an indication of a first STA of a group of STAs to transmit feedback and training symbols. The method further includes receiving, from the AP, a frame addressed to the group of STAs, wherein the frame includes a PHY preamble including group identification information identifying the group of STAs. The group identification information enables another STA not in the group of STAs, that receives the frame, to set its network allocation vector (NAV) timer based on a duration field in the frame. On a condition the STA is a first STA in the order of the group of STAs, a first sounding response frame may be transmitted to the AP, wherein the first sounding response frame includes quantized sounding feedback determined from the received training symbols.
    Type: Application
    Filed: September 24, 2018
    Publication date: January 24, 2019
    Applicant: InterDigital Patent Holdings, Inc.
    Inventor: Sudheer A. Grandhi
  • Method and apparatus for providing very high throughput operation and capability signaling for wireless communications
    Patent number: 10165493
    Abstract: A method and apparatus are disclosed for enabling very high throughput (VHT) communications. A wireless transmit and receive unit (WTRU) may receive, from an access point (AP), a management frame comprising VHT capabilities information. The VHT capabilities 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: Grant
    Filed: December 8, 2017
    Date of Patent: December 25, 2018
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventor: Sudheer A. Grandhi
  • METHOD AND APPARATUS FOR SUPPORTING MANAGEMENT ACTIONS FOR VERY HIGH THROUGHPUT IN WIRELESS COMMUNICATIONS
    Publication number: 20180324880
    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: July 19, 2018
    Publication date: November 8, 2018
    Applicant: InterDigital Patent Holdings, Inc.
    Inventor: Sudheer A. GRANDHI
  • MESSAGING APPLICATION WITH PRESENTATION WINDOW
    Publication number: 20180322099
    Abstract: A messaging system supports a presentation session with participants of the presentation, a presenter and one or more audience members. The message 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: May 7, 2018
    Publication date: November 8, 2018
    Inventors: Sridhar Vembu, Arthur J. Behiel, Sudheer A. Grandhi
  • Method and apparatus for power savings in a wireless local area network
    Patent number: 10123266
    Abstract: A method and apparatus for power savings in a wireless local area network (WLAN) are disclosed. A station (STA) may receive parameters that associate the STA to a specific group of STAs and perform a channel access during a period that is allowed for the group of STAs based on the parameters. The STA may receive information regarding an access slot that is allowed for the group of STAs and access a channel during the access slot. The STA may receive a schedule for wake up from a doze state and goes in and out of the doze state based on the schedule. A highest channel access priority may be provided to a sensor or meter type of STA. The STA may indicate to an access point (AP) that the STA will not listen to a traffic indication map (TIM) or a delivery TIM (DTIM) in a beacon.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: November 6, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Monisha Ghosh, Lei Wang, Nirav B. Shah, Guodong Zhang, Sudheer A. Grandhi
  • Method and apparatus for transmission management in a wireless communication system
    Patent number: 10117179
    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: May 1, 2017
    Date of Patent: October 30, 2018
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Mohammed Sammour, Sudheer A. Grandhi, Robert L. Olesen
  • Method and apparatus of enabling multi band transmission
    Patent number: 10117201
    Abstract: A method for multi-band operation by a first transmit/receive unit (TRU) is disclosed. The method may comprise monitoring a plurality of frequency bands including a first band and a second band. A first beacon may be received on the first band and a determination may be made, based on the received first beacon, of a first beacon period start time. The first beacon period start time may correspond to beacons transmitted by the second TRU. A second beacon period start time may be determined, based on the received first beacon, wherein the second beacon period start time corresponds to a beacon for transmission by the first TRU. A beacon signal may be transmitted in a second band, by the first TRU, wherein the beacon signal is timing aligned with beacon signals of the second TRU. The first band and the second band may be adjacent radio bands.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: October 30, 2018
    Assignee: InterDigital Technology Corporation
    Inventors: Juan Carlos Zuniga, Sudheer A. Grandhi, Mohammed Sammour, Catherine M. Livet
  • Group transmissions in wireless local area networks
    Patent number: 10085168
    Abstract: A method for MU MIMO channel sounding by a STA includes receiving, from an AP, sounding information including an indication of a first STA of a group of STAs to transmit feedback and training symbols. The method further includes receiving, from the AP, a frame addressed to the group of STAs, wherein the frame includes a PHY preamble including group identification information identifying the group of STAs. The group identification information enables another STA not in the group of STAs, that receives the frame, to set its network allocation vector (NAV) timer based on a duration field in the frame. On a condition the STA is a first STA in the order of the group of STAs, a first sounding response frame may be transmitted to the AP, wherein the first sounding response frame includes quantized sounding feedback determined from the received training symbols.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: September 25, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventor: Sudheer A. Grandhi