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).

  • Publication number: 20150319029
    Abstract: Methods and apparatus for integrating Bluetooth devices into neighbor aware networks are described herein. In some aspects, a method for wireless communication may comprise receiving at least one parameter indicating availability of a service associated with a first wireless protocol from a first wireless device configured to communicate according to the first wireless protocol. The method may further comprise encapsulating the at least one parameter into a service discovery frame associated with a second wireless protocol. The method may further comprise transmitting the service discovery frame to a second wireless device configured to communicate according to the second wireless protocol.
    Type: Application
    Filed: April 28, 2015
    Publication date: November 5, 2015
    Inventors: Santosh Paul Abraham, George Cherian, Abhishek Pramod Patil, Hemanth Sampath
  • Patent number: 9179319
    Abstract: Apparatuses and methodologies are described that enhance performance in a wireless communication system using beamforming transmissions. According to one aspect, a set of transmit beams are defined that simultaneously provides for space division multiplexing, multiple-input multiple output (MIMO transmission and opportunistic beamforming. The addition of a wide beam guarantees a minimum acceptable performance for all user devices.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: November 3, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Dhananjay Ashok Gore, Alexei Gorokhov, Hemanth Sampath, Tingfang Ji, Tamer Kadous
  • Publication number: 20150312004
    Abstract: An acknowledgment (ACK) frame has two parts: a group ACK part and a scheduling information part. In the group ACK part, an ACK/NACK indicator is included for a previous uplink (UL) transmission per station (STA). In the scheduling information part, information included for the following UL transmission per selected STA may comprise, for example, one or more of: a number of selected STAs, a media access control (MAC) address of each selected STA, a data transmission duration per selected STA, a transmission rate per selected STA, a request transmission duration, a pilot transmission order, or a STA transmission order.
    Type: Application
    Filed: July 7, 2015
    Publication date: October 29, 2015
    Inventors: Yan Zhou, Santosh Paul ABRAHAM, Gwendolyn Denise BARRIAC, Simone MERLIN, Rahul TANDRA, Hemanth SAMPATH
  • Patent number: 9173234
    Abstract: Certain aspects of the present disclosure relate to techniques for medium reservation in the case of multi-user (MU) communications. Multiple mechanisms are supported for protecting MU transmissions, wherein appropriate control messages can be exchanged between an access point and served user stations before transmitting downlink data packets.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: October 27, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Simone Merlin, Santosh Paul Abraham, Hemanth Sampath, Vincent Knowles Jones, Maarten Menzo Wentink, Mohammad Hossein Taghavi Nasrabadi, Sameer Vermani, Didier Johannes Richard Van Nee
  • Patent number: 9173218
    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for operating in a television white space (TVWS) network. One example method generally includes receiving, at an apparatus, a message with a field indicating a current version of an unused frequency spectrum map (e.g., a white space map (WSM)), the unused frequency spectrum map indicating channels usable for wireless communications; determining whether the current version of the unused frequency spectrum map is different than a previous version of the unused frequency spectrum map; and using a channel for wireless communications based on the determination. Another example method generally includes accessing a database of available channels for a current location of an apparatus via a neighboring portable or fixed enabling apparatus and enabling one or more portable dependent apparatuses for the wireless communications via one or more of the available channels.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: October 27, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Santosh Paul Abraham, Avinash Jain, Stephen J. Shellhammer, Hemanth Sampath
  • Publication number: 20150296458
    Abstract: A method includes transmitting, at an electronic device in a neighbor aware network (NAN), a discovery beacon at a designated discovery beacon transmission time. The designated discovery beacon transmission time is determined based on an internal clock of the electronic device. The method further includes synchronizing the internal clock to a clock reference that is external to the electronic device.
    Type: Application
    Filed: April 8, 2015
    Publication date: October 15, 2015
    Inventors: Santosh Paul ABRAHAM, Alireza RAISSINIA, George CHERIAN, Hemanth Sampath
  • Patent number: 9160431
    Abstract: Certain aspects of the present disclosure present a technique for efficient group definition and overloading for downlink multiuser multiple-input multiple-output (MU-MIMO) transmissions.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: October 13, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Santosh Paul Abraham, Sameer Vermani, Hemanth Sampath
  • Patent number: 9154211
    Abstract: Methods and apparatuses are disclosed that determine whether to feedback, and the amount of feedback, with respect to eigenbeam information based upon channel resources. Additionally, methods and apparatuses are disclosed that determine whether to feedback, and the amount of feedback, with respect to eigenbeam information based upon channel information and changes in channel information.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: October 6, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Hemanth Sampath, Aamod Khandekar, Dhananjay Ashok Gore, Alexei Gorokhov, Tamer Kadous
  • Patent number: 9154363
    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: Grant
    Filed: May 8, 2012
    Date of Patent: October 6, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Sameer Vermani, Santosh P. Abraham, Mohammad Hossein Taghavi Nasrabadi, Vincent K. Jones, Hemanth Sampath
  • Patent number: 9154983
    Abstract: Systems, methods, and devices detect and managing the presence of bursty interference on a wireless communication system. A method of detecting the presence of bursty interference on a wireless network includes receiving, at a wireless device, a message from a transmitting device. The method further includes determining whether the message includes errors caused by bursty interference. The method further includes suspending a channel tracking when bursty interference is detected. The method may further include reporting bursty interference to the transmitting device when bursty interference is detected.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: October 6, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Gwendolyn Denise Barriac, Hemanth Sampath, Santosh Paul Abraham, Rahul Tandra, Yan Zhou, Bin Tian, Sameer Vermani, Simone Merlin, Didier Johannes Richard Van Nee
  • Patent number: 9148856
    Abstract: A particular method includes transmitting a fetch trigger frame from a station to an access point. The method includes entering a power save mode at the station until a determination at the station that a fetch time associated with the station has elapsed. The access point is configured to communicate with one or more other stations during the fetch time. The method further includes, in response to the determination, exiting the power save mode and receiving one or more data frames from the access point at the station after exiting the power save mode.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: September 29, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Maarten Menzo Wentink, Hemanth Sampath
  • Patent number: 9148256
    Abstract: The performance of a Single Code Word (SCW) design with low complexity MMSE receiver & rank prediction is similar to the Multiple Code Word (MCW) design with successive interference cancellation (SIC). A method of rank prediction comprises calculating MIMO channel matrices corresponding to layer transmissions for each tone, calculating signal-to-noise ratios (SNRs) for each tone based on the MIMO channel matrices, mapping the SNR for each tone to generate effective SNRs for each layer transmission, selecting a highest packet format (PF) with an SNR threshold less than the effective SNR for each layer transmission, maximizing an over-all spectral efficiency based on the selected highest packet formats for each layer transmission, and selecting a rank based on maximizing an over-all spectral efficiency.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: September 29, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Hemanth Sampath, Tamer Kadous
  • Publication number: 20150271759
    Abstract: Systems and methods of limiting wireless discovery range are described. A method may include determining, at a first device, a discovery range threshold that limits a distance from the first device at which a second device is operative to decode a discovery message. The method may include adjusting a transmission attribute at the first device based on the discovery range threshold. The method may include sending the discovery message in accordance with the adjusted transmission attribute.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 24, 2015
    Inventors: Santosh Paul Abraham, George Cherian, Hemanth Sampath, Rolf De Vegt, Simone Merlin, Alireza Raissinia, Vinay Sridhara
  • Publication number: 20150271000
    Abstract: Certain aspects of the present disclosure relate to techniques for constructing a VHT-SIG field of a transmission preamble in a manner that may reduce peak-to-average power ratio (PAPR) of the transmission.
    Type: Application
    Filed: June 9, 2015
    Publication date: September 24, 2015
    Inventors: Lin YANG, Vincent Knowles JONES, IV, Albert VAN ZELST, Hemanth SAMPATH, Didier Johannes Richard VAN NEE
  • Patent number: 9144018
    Abstract: A particular method includes receiving a power save polling frame from a station at an access point. The method also includes, in response to receiving the power save polling frame, transmitting a frame from the access point to the station, the frame indicating whether traffic associated with the station is buffered at the access point. Another particular method includes transmitting a power save polling frame from the station to the access point. The method further includes, in response to transmitting the power save polling frame, receiving a frame from the access point indicating whether traffic associated with the station is buffered at the access point.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: September 22, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Maarten Menzo Wentink, Hemanth Sampath
  • Publication number: 20150264689
    Abstract: A method comprises receiving a first message over a first portion of a frequency bandwidth. The first message includes an identifier of a transmitting first wireless device and an intended recipient second wireless device. The method comprises determining whether a second portion of the frequency bandwidth is idle for a duration of time including at least one of a PIFS time and a time required for a backoff timer to expire. The method comprises transmitting a second message over the second portion of the frequency bandwidth by a third wireless device, the second message having a limited transmission time that is not to extend beyond a transmission time of the first message, thereby allowing an availability of the first and second portions for use after an end of the transmission time of the first message. The third wireless device is not an intended recipient of the first message.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 17, 2015
    Inventors: Hemanth Sampath, Simone Merlin, George Cherian, Srinivas Katar, Hao Zhu
  • Patent number: 9137815
    Abstract: Certain aspects of the present disclosure relate to a method for enhanced multi-user multiple input multiple output (MU-MIMO) wireless communications. The proposed method may reduce and/or eliminate stringent frequency and time synchronization requirements for stations (STAs) to participate in a downlink MU-MIMO transaction by utilizing deterministic scheduling.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: September 15, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Hemanth Sampath, Vincent Knowles Jones, IV, Maarten Menzo Wentink, Santosh P. Abraham
  • Publication number: 20150256240
    Abstract: Certain aspects of the present disclosure propose transmitting a feedback message to an access point. The feedback may comprise a beamforming extension field, which may carry per tone signal to noise ratio of a station. For certain aspects, the station transmitting the per-tone SNR may be a single user (SU)-capable device. For certain aspects, the station may indicate to the access point whether or not it has a maximum likelihood (ML) receiver.
    Type: Application
    Filed: May 21, 2015
    Publication date: September 10, 2015
    Inventors: Hemanth Sampath, Sameer Vermani, Albert Van Zelst, Didier Johannes Richard Van Nee
  • Patent number: 9130812
    Abstract: Systems, methods, and devices for wireless communication. In one aspect, an apparatus for wireless communication is provided. The apparatus includes a receiver configured to receive a wireless signal comprising a packet. At least a portion of the wireless signal is configured to be received over a bandwidth lower than or equal to 1.25 MHz. The packet is formed from at least one orthogonal frequency-division multiplexing (OFDM) symbol comprising thirty-two tones. The thirty-two tones correspond to frequency subcarriers within the bandwidth. The thirty-two tones of the at least one OFDM symbol are allocated as: twenty-four data tones, two pilot tones, five guard tones, and one direct current (DC) tone. The apparatus includes a processor configured to evaluate the wireless signal. The processor includes a transform module configured to convert the at least one OFDM symbol into a frequency domain signal using a thirty-two point mode.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: September 8, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Mohammad Hossein Taghavi Nasrabadi, Sameer Vermani, Lin Yang, Hemanth Sampath
  • Patent number: 9130631
    Abstract: Certain aspects of the present disclosure propose transmitting a feedback message to an access point. The feedback may comprise a beamforming extension field, which may carry per tone signal to noise ratio of a station. For certain aspects, the station transmitting the per-tone SNR may be a single user (SU)-capable device. For certain aspects, the station may indicate to the access point whether or not it has a maximum likelihood (ML) receiver.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: September 8, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Hemanth Sampath, Sameer Vermani, Albert Van Zelst, Didier Johannes Richard Van Nee