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).

  • Patent number: 10652924
    Abstract: Systems and methods are disclosed for a wireless device to transmit or receive a channel busy time (CBT) to or from other devices in a wireless network. For transmitting, the wireless device may determine a CBT during which a wireless channel is to be occupied, generate a universal reservation signal (URS) indicating the CBT, and transmit on the wireless channel the URS to at least one other wireless device. For receiving, the wireless device may receive on a wireless channel a URS from a second wireless device, the URS configured to indicate the CBT. The wireless device may also refrain from attempting to transmit on the wireless channel during the CBT.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: May 12, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Maarten Menzo Wentink, Didier Johannes Richard Van Nee, Albert Van Zelst, Bin Tian, Hemanth Sampath
  • Publication number: 20200145139
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for implementing a retransmission protocol in a wireless local area network (WLAN). The retransmission protocol enables a sending station (STA) to communicate additional parity bits associated with an original transmission that included forward error correction (FEC) encoded codewords. Several techniques are described for a receiving STA to indicate which portions of the original transmission was not properly received. The receiving STA may store the original transmission for use with additional parity bits in a subsequent transmission. The sending STA may communicate the additional parity bits in a subsequent transmission to assist the receiving STA recover the data from the original transmission.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 7, 2020
    Inventors: Simone Merlin, Didier Johannes Richard Van Nee, Hemanth Sampath, Bin Tian, Gwendolyn Denise Barriac
  • Patent number: 10638371
    Abstract: Wireless communications systems and methods related to signaling medium reservation information medium sharing among multiple radio technologies (RATs) are provided. A first wireless communication device communicates, with a second wireless communication device, a reservation signal to reserve a transmission opportunity (TXOP) in a spectrum. The spectrum is shared by multiple RATs. The reservation signal includes a plurality of first waveform sequences indicating medium reservation information detectable by the multiple RATs. The first wireless communication device and the second wireless communication device are associated with a first RAT of the multiple RATs. The first wireless communication device communicates, with the second wireless communication device using the first RAT, a communication signal in the spectrum during the TXOP.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: April 28, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoxia Zhang, Bin Tian, Jing Sun, Taesang Yoo, Aleksandar Damnjanovic, Tamer Kadous, Yongbin Wei, Hemanth Sampath, Sameer Vermani
  • Publication number: 20200112871
    Abstract: This disclosure describes systems, devices, apparatus, and methods, including computer programs encoded on storage media, for controlling a network with one or more access points (APs). A controller may be configured to schedule at least some resources of the one or more APs to improve network efficiency. The APs may measure and report a variety of information and statistics to the controller. The controller may determine one or more transmission parameters and one or more operations a given AP is permitted to perform during a respective time interval. The controller may communicate the one or more transmission parameters using an indication, such as a message. At least one AP associated with the controller may communicate with stations (STAs) using the one or more transmission parameters.
    Type: Application
    Filed: September 11, 2019
    Publication date: April 9, 2020
    Inventors: Simone Merlin, Yanjun Sun, Hemanth Sampath, Bibhu Mohanty, Brian Michael Buesker, Yuan Zhou, Eric Vanbuhler, Danyang Cong, Raamkumar Balamurthi, Harshit Joshi, Vamsi Vegunta, Danny Jen, Nitin Ravinder
  • Patent number: 10601715
    Abstract: Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication is provided. The method includes receiving a trigger frame from an access point, the trigger frame being transmitted to two or more stations and indicating an uplink transmission opportunity. The trigger frame further includes a request for the two or more stations to concurrently transmit uplink data at a specific time. The method includes transmitting uplink data at the specific time to the access point concurrently with another of the two or more stations transmitting uplink data to the access point.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: March 24, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Simone Merlin, Gwendolyn Denise Barriac, Hemanth Sampath, Sameer Vermani
  • Publication number: 20200052832
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for implementing a hybrid automatic repeat request (HARQ) protocol in a wireless local area network (WLAN). A station (STA) may send a HARQ transmission to another STA. The HARQ protocol may support the use of different types of feedback from the receiving STA to control the HARQ retransmission process. This disclosure provides example message formats to support HARQ transmission and HARQ feedback in a WLAN.
    Type: Application
    Filed: August 8, 2019
    Publication date: February 13, 2020
    Inventors: Bin Tian, Hemanth Sampath, Sameer Vermani, Lin Yang, Dung Ngoc Doan, Simone Merlin, Alfred Asterjadhi, Jialing Li Chen, Stephen Jay Shellhammer
  • Patent number: 10554557
    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: Grant
    Filed: June 15, 2016
    Date of Patent: February 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Simone Merlin, Gwendolyn Denise Barriac, Hemanth Sampath, Sameer Vermani
  • Patent number: 10548111
    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for efficiently managing groups of stations (STAs) receiving simultaneous transmissions in a multiuser multiple-input multiple-output (MU-MIMO) scheme. One example method generally includes; for a first apparatus in a number of groups of apparatuses, allocating a first spatial stream position for each of at least one first group in the number of the groups; and transmitting a first unicast message to the first apparatus, wherein the first unicast message comprises an indication of the allocated spatial stream position for each of the at least one first group and, for each group in the number of the groups, an indication of a membership status, in the group, of the first apparatus.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: January 28, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Santosh Paul Abraham, Sameer Vermani, Maarten Menzo Wentink, Rahul Tandra, Hemanth Sampath
  • Patent number: 10523821
    Abstract: Devices and methods for synchronized group messaging in a wireless communication system are described. Multicast transmissions, such as those in a dense network, can cause significant medium usage because same multicast packet is likely sent by multiple APs at different time. Medium usage in such implementations may be redundant. As such, the transmission medium is not used optimally. Devices and methods which coordinate and align group messages (e.g., multicast packets) amongst APs are described. Each AP may be configured to transmit identical packets at the same time. Therefore, medium usage can be reduced, while the range can be extended due to accumulated energy from APs.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: December 31, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Zhou, Simone Merlin, George Cherian, Santosh Paul Abraham, Gwendolyn Denise Barriac, Hemanth Sampath
  • Patent number: 10516614
    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 quality of service (QoS) message to a device. The QoS message includes a request for a transmission opportunity for sending uplink data to the device. The QoS message includes at least one of a sequence control field or a QoS control field. The method further includes receiving a clear to transmit (CTX) message in response to the QoS message. The method further includes transmitting data to the device in response to the CTX message.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: December 24, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Simone Merlin, Gwendolyn Denise Barriac, Hemanth Sampath, Sameer Vermani
  • Patent number: 10469387
    Abstract: Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication includes receiving, via a first device, a first wireless message granting permission for the first device to transmit a message during a transmission opportunity, the first wireless message being transmitted to the first device at least partially concurrently with a transmission of at least a portion of a second wireless message addressed to a second device, the first wireless message being received over a first spatial stream and the second wireless message being transmitted over a second spatial stream; and transmitting, via the first device, a third message to a third device during the transmission opportunity at least partially concurrently with a transmission of a fourth message by the second device to the third device.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: November 5, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Simone Merlin, Gwendolyn Denise Barriac, Hemanth Sampath, Sameer Vermani
  • Patent number: 10439773
    Abstract: Systems, methods, and devices for wireless communication are disclosed herein. One aspect of the disclosure provides a method of transmitting to two or more wireless communication devices. The method includes transmitting a first section of a preamble according to a first format, the first section of the preamble containing information informing devices compatible with the first format to defer to the transmission, transmitting a second section of the preamble according to a second format, the second section of the preamble containing tone allocation information, the tone allocation information identifying two or more wireless communication devices; and transmitting data to the two or more wireless communication devices simultaneously, the data contained on two or more sub-bands.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: October 8, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Sameer Vermani, Rahul Tandra, Simone Merlin, Hemanth Sampath
  • Patent number: 10412746
    Abstract: Certain aspects of the present disclosure relate to a method for forwarding of data in peer-to-peer transactions by a high-capability wireless device, such as an access point.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: September 10, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Mohammad Hossein Taghavi Nasrabadi, Hemanth Sampath, Santosh Paul Abraham, Avinash Jain
  • Patent number: 10321451
    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: November 7, 2017
    Date of Patent: June 11, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Hemanth Sampath, Bin Tian, Rahul Tandra, Gwendolyn Denise Barriac, Yan Zhou, Sameer Vermani, Simone Merlin
  • Publication number: 20190173637
    Abstract: Systems, methods, and devices for wireless communication are disclosed herein. One aspect of the disclosure provides a method of transmitting to two or more wireless communication devices. The method includes transmitting a first section of a preamble according to a first format, the first section of the preamble containing information informing devices compatible with the first format to defer to the transmission, transmitting a second section of the preamble according to a second format, the second section of the preamble containing tone allocation information, the tone allocation information identifying two or more wireless communication devices; and transmitting data to the two or more wireless communication devices simultaneously, the data contained on two or more sub-bands.
    Type: Application
    Filed: January 24, 2019
    Publication date: June 6, 2019
    Inventors: Sameer Vermani, Rahul Tandra, Simone Merlin, Hemanth Sampath
  • Publication number: 20190173794
    Abstract: Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication is provided. The method includes receiving a trigger frame from an access point, the trigger frame being transmitted to two or more stations and indicating an uplink transmission opportunity. The trigger frame further includes a request for the two or more stations to concurrently transmit uplink data at a specific time. The method includes transmitting uplink data at the specific time to the access point concurrently with another of the two or more stations transmitting uplink data to the access point.
    Type: Application
    Filed: January 17, 2019
    Publication date: June 6, 2019
    Inventors: Simone Merlin, Gwendolyn Barriac, Hemanth Sampath, Sameer Vermani
  • Patent number: 10306672
    Abstract: A method includes sending, from a first transmitter to a first receiver, a request to send (RTS) message associated with a first transmit opportunity (TXOP). The RTS message requests the first receiver to indicate whether reuse of the first TXOP is permitted. The method further includes receiving, at the first transmitter from the first receiver, a clear to send (CTS) message responsive to the RTS message.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: May 28, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Hao Zhu, Srinivas Katar, Simone Merlin, Chao Zou, Gwendolyn Denise Barriac, George Cherian, Santosh Paul Abraham, Lawrence Winston Yonge, III, Hemanth Sampath
  • Patent number: 10243700
    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: Grant
    Filed: July 7, 2015
    Date of Patent: March 26, 2019
    Assignee: QUALCOMM Incorporation
    Inventors: Yan Zhou, Santosh Paul Abraham, Gwendolyn Denise Barriac, Simone Merlin, Rahul Tandra, Hemanth Sampath
  • Publication number: 20190086505
    Abstract: Certain aspects of the present disclosure provide methods and apparatus for estimating angular information, such as angle of arrival (AoA) information or angle of departure (AoD) information.
    Type: Application
    Filed: September 20, 2017
    Publication date: March 21, 2019
    Inventors: Rahul MALIK, Carlos Horacio ALDANA, Hemanth SAMPATH
  • Patent number: 10230497
    Abstract: Certain aspects of the present disclosure provide methods and apparatus for multi user bar protocols and frames. According to certain aspects, an apparatus is provided for wireless communications. The apparatus generally includes a processing system configured to determine that a plurality of devices have a first capability and generate a multi-user (MU) packet that solicits an immediate response from a plurality of the devices, wherein the immediate response comprises an acknowledgment (ACK) or block ACK (BA) and an interface configured to output the MU packet for transmission.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: March 12, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Simone Merlin, Gwendolyn Denise Barriac, Hemanth Sampath