Patents by Inventor Hemanth Sampath

Hemanth Sampath 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).

  • Devices and methods for communication in ad-hoc networks
    Patent number: 9553769
    Abstract: In a particular embodiment, a method includes determining, by a first device, a number of discovery messages received during at least one discovery interval. Based on the number of discovery messages, an estimated number of devices in an ad-hoc network is determined. The method further includes transmitting, during a second discovery interval that is subsequent to the at least one discovery interval, a discovery message. The discovery message indicates the estimated number of devices in the ad-hoc network.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: January 24, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Santosh Paul Abraham, George Cherian, Simone Merlin, Hemanth Sampath
  • Access point proxy and multi-hop wireless communication
    Patent number: 9549371
    Abstract: Methods and devices for communicating data in a wireless communications network are described herein. In one aspect, network layers are offloaded from a station to an access point. In another aspect, flow control is introduced between the station and access point. In another aspect, segmentation is introduced between the station and access point. In another aspect, keep alive is introduced between the station and access point. In another aspect, in addition to MAC layer sequencing and acknowledging, additional sequencing and acknowledging is performed between the station and access point to ensure reliable transmission of data. In another aspect, MAC layer sequencing and acknowledging is disabled. In another aspect, a last MPDU fragment is used to ensure reliable transmission of data.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 17, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Amin Jafarian, George Cherian, Santosh Paul Abraham, Hemanth Sampath
  • Systems and methods for reuse of a wireless medium for high efficiency wifi
    Patent number: 9544904
    Abstract: Systems and method for concurrent communication using high efficiency wifi are disclosed. One aspect is a method of transmitting a wireless message on a medium utilizing carrier sense multiple access (CSMA). The method includes receiving, via a first wireless device, at least a portion of a first wireless message from a second wireless device, the message including an indication of a basic service set of the second wireless device. The method also includes determining whether to defer transmission of a second wireless message based, at least in part, on the basic service set of the second wireless device.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: January 10, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Gwendolyn Denise Barriac, Simone Merlin, Sameer Vermani, Rahul Tandra, Yan Zhou, Bin Tian, Hemanth Sampath
  • METHOD AND APPARATUS FOR WLAN INITIAL LINK SETUP
    Publication number: 20160360472
    Abstract: A method includes, prior to authenticating a mobile device, receiving by an access point a first message from the mobile device, determining that the mobile device is to be authenticated prior to responding to the first message, and sending to an authentication server a second message that includes an authentication request and the first message. The method also includes receiving from the authentication server a third message that includes a response to the authentication request and that further includes the first message.
    Type: Application
    Filed: June 3, 2015
    Publication date: December 8, 2016
    Inventors: George Cherian, Santosh Paul Abraham, Jouni Malinen, Hemanth Sampath
  • Systems and methods for downlink frequency domain multiplexing transmissions
    Patent number: 9516634
    Abstract: Systems, methods, and devices for transmitting data are described herein. In some aspects, a method comprises generating a first message. The first message may comprise an allocation of a first station to a first frequency channel and a second station to a second frequency channel. The method further comprises transmitting the first message over the first frequency channel and the second frequency channel. The method further comprises transmitting, after transmission of the first message, a second message to the first station using the first frequency channel. The method further comprises transmitting, after transmission of the first message, a third message to the second station using the second frequency channel.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: December 6, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Hemanth Sampath, Bin Tian, Rahul Tandra, Gwendolyn Denise Barriac, Yan Zhou, Sameer Vermani, Simone Merlin
  • Apparatus and methods for media access control header compression
    Patent number: 9515925
    Abstract: Systems, methods, and devices for communicating packets having a plurality of types are described herein. In some aspects, the packets include a compressed MAC header. In some aspects the packets include an acknowledgment (ACK) frame. The fields included in a particular packet type may be based on the type of information to be communicated to the receiving device.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: December 6, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Maarten Menzo Wentink, Santosh Paul Abraham, Simone Merlin, Geert Awater, Mohammad H. Taghavi Nasrabadi, Zhi Quan, Hemanth Sampath, Alfred Asterjadhi
  • Limiting wireless discovery range
    Patent number: 9510292
    Abstract: Systems and methods of limiting wireless discovery range. A transmitting device may limit wireless discovery range by adjusting one or more transmission attributes of a discovery message, measuring inter-device distance based on range determination messages, or any combination thereof. A receiving device may limit wireless discovery range based on one or more attributes of a received discovery message, measuring inter-device distance based on range determination messages, or any combination thereof. Discovery messages may include a range adaptation bit indicating whether range adaptation is to be performed.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: November 29, 2016
    Inventors: Santosh Paul Abraham, George Cherian, Hemanth Sampath, Rolf De Vegt, Simone Merlin, Alireza Raissinia, Vinay Sridhara
  • Sounding feedback schemes for very high throughput wireless systems
    Patent number: 9509391
    Abstract: Certain aspects of the present disclosure relate to techniques for transmitting sounding feedback in Very High Throughput (VHT) wireless systems. The sounding feedback may be transmitted from a user station (STA), wherein the feedback may comprise a certain number of beamforming matrices and a certain number of singular values of a wireless channel associated with the STA. Further, the sounding feedback may comprise a bit for indicating whether this feedback represents a Single-User (SU) feedback or a Multi-User (MU) feedback.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: November 29, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Sameer Vermani, Rahul Tandra, Albert Van Zelst, Didier Johannes Richard Van Nee, Hemanth Sampath, Vincent Knowles Jones, IV
  • METHODS AND APPARATUS FOR SIGNAL TIMING DETECTION, SHARING, AND INTERFERENCE AVOIDANCE
    Publication number: 20160345345
    Abstract: Certain aspects of the present disclosure relate to a methods and apparatus for wireless communication. In one aspect, a method of facilitating coexistence of wireless local area network (WLAN) devices and long term evolution unlicensed (LTE-U) devices in a communication network comprising a wireless device capable of both WLAN and LTE-U communication includes detecting one or more LTE-U networks and associated communication characteristics. The method further includes generating a LTE-U measurement report indicative of the LTE-U communication characteristics. The method further includes transmitting the LTE-U measurement report to at least one WLAN device.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 24, 2016
    Inventors: Rahul Malik, Hemanth Sampath, Tao Luo, Ahmed Kamel Sadek
  • Enhancements to the MU-MIMO VHT preamble to enable mode detection
    Patent number: 9503932
    Abstract: Certain aspects of the present disclosure present a technique for enabling a receiver to detect mode of transmission of a signal based on a common field transmitted to all the receivers. The proposed technique includes frame structure in which information about the transmission mode is transmitted in a first portion of a SIG field to all the receivers.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: November 22, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sameer Vermani, Lin Yang, Hemanth Sampath, Vincent Knowles Jones, IV, Didier Johannes Richard Van Nee
  • Enhancements to the MU-MIMO VHT preamble to enable mode detection
    Patent number: 9503931
    Abstract: Certain aspects of the present disclosure present a technique for enabling a receiver to detect mode of transmission of a signal based on a common field transmitted to all the receivers. The proposed technique includes frame structure in which information about the transmission mode is transmitted in a first portion of a SIG field to all the receivers.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: November 22, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sameer Vermani, Lin Yang, Hemanth Sampath, Vincent Knowles Jones, Didier Johannes Richard Van Nee
  • TECHNIQUES FOR USING ALTERNATE CHANNELS FOR ACKNOWLEDGEMENT MESSAGES
    Publication number: 20160323881
    Abstract: Methods, systems, and devices are described for wireless communication. An example wireless communication device may receive at least a portion of a data frame from another wireless communication device via a first or primary channel. The example wireless communication device may transmit a first acknowledgement message via a second or alternate channel, different from the first or primary channel, in response to the received data frame. In another example, an example wireless communication device may transmit a data frame via a first or primary channel. The wireless communication device may receive an acknowledgement message via a second or alternate channel, different from the first or primary channel in response to the data frame from another wireless communication device.
    Type: Application
    Filed: April 28, 2016
    Publication date: November 3, 2016
    Inventors: Veerendra Bhora, Simone Merlin, Vincent Knowles Jones, IV, Hemanth Sampath, Assaf Touboul, Adam Lapede
  • Enhanced multichannel access for very high throughput
    Patent number: 9485783
    Abstract: Certain aspects of the present disclosure relate to a method for enhanced multichannel access where multiple simultaneous transmissions can occur each spanning a subset of frequency bands.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: November 1, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Santosh P. Abraham, Sameer Vermani, Hemanth Sampath, Vinay Sridhara
  • SYSTEMS AND METHODS FOR DOWNLINK FREQUENCY DOMAIN MULTIPLEXING TRANSMISSIONS
    Publication number: 20160316476
    Abstract: Systems, methods, and devices for transmitting data are described herein. In some aspects, a method comprises generating a first message. The first message may comprise an allocation of a first station to a first frequency channel and a second station to a second frequency channel. The method further comprises transmitting the first message over the first frequency channel and the second frequency channel. The method further comprises transmitting, after transmission of the first message, a second message to the first station using the first frequency channel. The method further comprises transmitting, after transmission of the first message, a third message to the second station using the second frequency channel.
    Type: Application
    Filed: July 6, 2016
    Publication date: October 27, 2016
    Inventors: Hemanth Sampath, Bin Tian, Rahul Tandra, Gwendolyn Denise Barriac, Yan Zhou, Sameer Vermani, Simone Merlin
  • Methods and apparatus for multiple user uplink
    Patent number: 9467379
    Abstract: Methods and apparatus for multiple user uplink are provided. In one aspect, a method of wireless communication is provided. The method includes transmitting a scheduling message to one or more stations. The scheduling message requests the one or more stations to transmit a station information message in response to the scheduling message. The method further includes receiving a plurality of station information messages. The station information messages indicates station information. The method further includes transmitting a media access control multi user (MAC MU) scheduling message to two or more stations. The MAC MU scheduling message is included in a payload portion of a physical layer data unit (PPDU) and indicates an uplink transmission opportunity and requests the two or more stations to concurrently transmit uplink data at a specific time.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 11, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Simone Merlin, Gwendolyn Denise Barriac, Hemanth Sampath, Sameer Vermani
  • SYSTEMS AND METHODS FOR DOWNLINK FREQUENCY DOMAIN MULTIPLEXING TRANSMISSIONS
    Publication number: 20160295591
    Abstract: Systems, methods, and devices for transmitting data are described herein. In some aspects, a method comprises generating a first message. The first message may comprise an allocation of a first station to a first frequency channel and a second station to a second frequency channel. The method further comprises transmitting the first message over the first frequency channel and the second frequency channel. The method further comprises transmitting, after transmission of the first message, a second message to the first station using the first frequency channel. The method further comprises transmitting, after transmission of the first message, a third message to the second station using the second frequency channel.
    Type: Application
    Filed: June 16, 2016
    Publication date: October 6, 2016
    Inventors: Hemanth Sampath, Bin Tian, Rahul Tandra, Gwendolyn Denise Barriac, Yan Zhou, Sameer Vermani, Simone Merlin
  • METHODS AND APPARATUS FOR ACKNOWLEDGMENT OF MULTI-USER UPLINK WIRELESS TRANSMISSIONS
    Publication number: 20160294530
    Abstract: Methods and apparatus for acknowledgment of multiple user uplink are provided. In one aspect, a method of wireless communication includes receiving a first wireless message from a first station at least partially concurrently with receiving a second wireless message from a second station, generating a first acknowledgment message in response to receiving the first wireless message, generating a second acknowledgement message in response to receiving the second wireless message, and transmitting the first acknowledgment message to the first station at least partially concurrently with transmitting the second acknowledgement message to the second station.
    Type: Application
    Filed: June 15, 2016
    Publication date: October 6, 2016
    Inventors: SIMONE MERLIN, GWENDOLYN DENISE BARRIAC, HEMANTH SAMPATH, SAMEER VERMANI
  • Channel selection rules for sub-1-GHz basic service sets
    Patent number: 9462596
    Abstract: Certain aspects of the present disclosure provide methods and apparatus for the coexistence of 1 MHz and 2 MHz operation modes within a wireless communication system in accordance with IEEE 802.11ah, for example. One example method generally includes scanning a plurality of channel pairs, wherein each of the channel pairs comprises a first channel having a first channel designation and a second channel having a second channel designation; determining, based on the scan, a set of open channels from the plurality of channel pairs in which no other apparatus is operating; selecting a primary channel based on the determination; and transmitting using the selected primary channel. The selection of the primary channel involves channel selection rules disclosed herein.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 4, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Vincent Knowles Jones, IV, Sameer Vermani, Simone Merlin, Hemanth Sampath
  • Low rate data communication
    Patent number: 9462575
    Abstract: A method includes generating a data packet at a source device for transmission via an Institute of Electrical and Electronics Engineers 802.11 wireless network. The data packet includes multiple data symbols that are duplicated in the data packet. At least a portion of a preamble of the data packet is not duplicated in the data packet. The portion of the preamble indicates that the packet is a low rate mode packet. The method also includes transmitting the data packet from the source device to a destination device via the wireless network.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: October 4, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sameer Vermani, Bin Tian, Rahul Tandra, Hemanth Sampath, Simone Merlin
  • SYSTEMS AND METHODS FOR WIRELESS COMMUNICATION OF PACKETS HAVING A PLURALITY OF FORMATS
    Publication number: 20160277543
    Abstract: Systems and methods for communicating packets having a plurality of formats are described herein. In some aspects, a signal (SIG) field in the preamble of a packet may indicate whether an extension field, such as an extension SIG field or SIG-B field, is included in the packet. In another aspect, one or more detectors may be used to auto-detect packets formatted as one of at least two different formats based on a short training field (STF) of a received packet. In some aspects, along training field (LTF) in the preamble of a packet may indicate whether the payload is repetition coded.
    Type: Application
    Filed: May 27, 2016
    Publication date: September 22, 2016
    Inventors: Sameer Vermani, Santosh Paul Abraham, Mohammad Taghavi Nasrabadi, Vincent Knowles Jones, IV, Hemanth Sampath