Patents by Inventor Rahul Tandra

Rahul Tandra 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: 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: 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
  • 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
  • Patent number: 10200115
    Abstract: Systems, methods, and devices for high-efficiency wireless frequency division multiplexing are provided. A method includes exchanging, at an access point, at least one frame reserving a wireless medium with at least one of a first and second wireless device. The method further includes receiving a first communication on a first set of wireless frequencies from the first wireless device. The method further includes receiving a second communication, at least partially concurrent with the first communication, on a second set of wireless frequencies from the second wireless device. The method further includes transmitting at least one acknowledgment of the first and second communication. The first set and the second set are mutually exclusive subsets of a set of wireless frequencies available for use by both the first and second wireless device.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: February 5, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Simone Merlin, Gwendolyn Denise Barriac, Hemanth Sampath, Sameer Vermani, Bin Tian, Yan Zhou, Rahul Tandra
  • Patent number: 10149198
    Abstract: Techniques are described for wireless communication. A method for wireless communication at an access point may include identifying a number of stations to receive data from the access point, and generating a downlink frame to transmit the data to the identified number of stations. The downlink frame may include a first signaling field (e.g., a wireless local area network (WLAN) signaling field) directed to the identified number of stations. The first signaling field may include a first segment and a second segment. The first segment may include information common to each of the identified number of stations. The second segment may include at least one information block. Each information block may be separately encoded for each of the identified number of stations. The method may also include transmitting the downlink frame to the identified number of stations.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: December 4, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Sameer Vermani, Rahul Tandra, Arjun Bharadwaj, Bin Tian
  • Patent number: 10135593
    Abstract: Methods and apparatuses for communicating over a wireless communication network are disclosed herein. One method includes selecting one of a plurality of allocation schemas for allocation of wireless resources to wireless communication devices. The method further includes generating an allocation message comprising an identifier of the selected allocation schema and one or more allocations of wireless resources according to selected allocation schema. The method further includes transmitting the allocation message to one or more wireless communication devices.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: November 20, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Eric Pierre Rebeiz, Rahul Tandra, Arjun Bharadwaj, Sameer Vermani, Bin Tian
  • Patent number: 10128917
    Abstract: Methods and apparatuses for communicating over a wireless communication network are disclosed herein. One method includes forming a message that includes a plurality of data tones and one or more direct current (DC) protection tones. The method further includes setting a value for a data tone of the plurality of data tones to carry a data portion of the message. The method further includes setting a value for a DC protection tone of the one or more DC protection tones by repeating the value for the data tone as the value for the DC protection tone. The method further includes transmitting the message to one or more wireless communication devices utilizing the plurality of data tones and the one or more DC protection tones.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: November 13, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Bin Tian, Lin Yang, Jialing Li Chen, Sameer Vermani, Rahul Tandra, Youhan Kim, Didier Johannes Richard van Nee
  • Patent number: 10097315
    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: April 17, 2014
    Date of Patent: October 9, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Zhou, Santosh Paul Abraham, Gwendolyn Denise Barriac, Simone Merlin, Rahul Tandra, Hemanth Sampath
  • Publication number: 20180269940
    Abstract: A method includes sending, from an access point of a wireless network to a first station of a plurality of stations of the wireless network, a packet including a preamble, a data portion, and trigger data that includes non-precoded, omni-direction data. The preamble precedes the data portion. The data portion precedes the trigger data. The trigger data is configured to cause the first station to perform a channel measurement responsive to receiving the packet. The access point sends beamformed data to one or more of the plurality of stations. At least one of the plurality of stations includes a mobile station configured to receive the beamformed data. The method also includes receiving, at the access point from the first station, feedback information that includes channel state information associated with the trigger data. The feedback information is received from the first station without polling individual stations of the plurality of stations.
    Type: Application
    Filed: May 11, 2018
    Publication date: September 20, 2018
    Inventors: Sameer Vermani, Bin Tian, Rahul Tandra, Simone Merlin
  • Patent number: 10028284
    Abstract: Methods and apparatus for providing wireless messages according to various tone plans can include a method of wireless communication. The method includes allocating a first allocation unit associated with a first tone plan having a first number of tones, for communication of one or more wireless messages by a wireless device. The method further includes allocating a second allocation unit, associated with a second tone plan having a second number of tones different from the first number of tones, for communication of one or more wireless messages by the wireless device. The method further includes selecting a combined tone plan for the wireless device based on at least the first tone plan and the second tone plan. The method further includes providing a wireless message for transmission by the wireless device according to the combined tone plan.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: July 17, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Jialing Li Chen, Lin Yang, Sameer Vermani, Rahul Tandra, Bin Tian
  • Publication number: 20180167249
    Abstract: Methods, devices, and computer program products for improving training field design in packets with increased symbol durations are disclosed. In one aspect, a method of transmitting a packet on a wireless communication network is disclosed. The method includes transmitting a preamble of the packet over one or more space-time-streams, the preamble including one or more training fields configured to be used for channel estimation, the one or more training fields each comprising one or more symbols of a first symbol duration. The method further includes transmitting a payload of the packet over the one or more space-time-streams, the payload comprising one or more symbols of a second symbol duration, the second symbol duration greater than the first symbol duration.
    Type: Application
    Filed: January 29, 2018
    Publication date: June 14, 2018
    Inventors: Sameer Vermani, Bin Tian, Rahul Tandra, Dung Ngoc Doan
  • Patent number: 9991940
    Abstract: In a wireless network having a plurality of devices configured to communicate using a beamforming technique, a method includes sending a trigger packet from a first device of the wireless network to a plurality of second devices of the wireless network. The trigger packet includes trigger data configured to cause the plurality of second devices to perform channel measurement based on the trigger data. The method also includes receiving feedback information from each of the plurality of second devices in response to the trigger packet.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: June 5, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Sameer Vermani, Bin Tian, Rahul Tandra, Simone Merlin
  • Patent number: 9949262
    Abstract: Methods and apparatuses for providing wireless messages according to various tone plans can include a system configured to generate a message according to a 2048-tone plan having 1960 data tones. The 2048-tone plan includes two identical 1024-tone plans each having 980 data tones. The system can further perform segment parsing to divide data into two data portions, each portion for transmission over one of two 80 MHz bandwidths, according to one of the two identical 1024-tone plans. The system can further perform low density parity check (LDPC) tone mapping separately on each of the two data portions. The system can further provide the message for transmission over a 160 MHz bandwidth including the two 80 MHz bandwidths.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: April 17, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Jialing Li Chen, Lin Yang, Sameer Vermani, Rahul Tandra, Bin Tian
  • Publication number: 20180091632
    Abstract: A method of wirelessly communicating a packet includes generating, at a first wireless device, a first packet including a first preamble decodable by a plurality of devices and a second preamble decodable by only a subset of the plurality of devices. The first preamble includes a first signal field. The second preamble includes a first training field. The method further includes transmitting the first packet concurrently with one or more second packets to be transmitted by wireless devices other than the first wireless device.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 29, 2018
    Inventors: Dung Ngoc Doan, Tao Tian, Sameer Vermani, Bin Tian, Lin Yang, Eric Pierre Rebeiz, Rahul Tandra, Simone Merlin, Alfred Asterjadhi, Yan Zhou
  • Patent number: 9930147
    Abstract: An 802.11ac access point (AP) may be capable of communicating with both 802.11n (on 40 MHz band) and 802.11ac devices (on 80 MHz band). While the 802.11ac AP is communicated with 802.11n devices on 40 MHz band, the remaining 40 MHz band is wasted because the 802.11n devices are not capable of communicating on this band. The AP may operate as if it is two virtual APs, one capable of communicating with 802.11n devices on a first primary and a first secondary channels (basic service set 1—BSS1) and the second communicating with 802.11ac devices on a second primary and a second secondary channels (BSS2). Individual beacons may be sent for BSS1 and BSS2. The transmissions on BSS2 may be performed simultaneously with transmissions on BSS1. However, transmission on one channel and receiving on the second channel cannot happen simultaneously.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: March 27, 2018
    Assignee: QUALCOMM, Incorporated
    Inventors: Santosh Paul Abraham, Simone Merlin, George Cherian, Gwendolyn Denise Barriac, Rahul Tandra, Bin Tian
  • Publication number: 20180083696
    Abstract: Systems, methods, and devices for high-efficiency wireless frequency division multiplexing are provided. A method includes exchanging, at an access point, at least one frame reserving a wireless medium with at least one of a first and second wireless device. The method further includes receiving a first communication on a first set of wireless frequencies from the first wireless device. The method further includes receiving a second communication, at least partially concurrent with the first communication, on a second set of wireless frequencies from the second wireless device. The method further includes transmitting at least one acknowledgment of the first and second communication. The first set and the second set are mutually exclusive subsets of a set of wireless frequencies available for use by both the first and second wireless device.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 22, 2018
    Inventors: Simone Merlin, Gwendolyn Denise Barriac, Hemanth Sampath, Sameer Vermani, Bin Tian, Yan Zhou, Rahul Tandra
  • Publication number: 20180083747
    Abstract: Methods, systems, and devices for wireless communication are described including determining one or more unfiltered CFOs, filtering the one or more unfiltered CFOs to identify a refined CFO based at least in part on the one or more unfiltered CFOs and a predetermined number of packets, modifying a transmission parameter based at least in part on the refined CFO, and transmitting a signal in a MU-MIMO environment based at least in part on the modified transmission parameter.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 22, 2018
    Inventors: Dung Doan, Vinayak Chowdiah, Ronald Gibson, Balakumar Jayaraman, Maksim Krasnyanskiy, Bin Tian, Rahul Tandra, Luiza Timariu, Harshit Joshi
  • Publication number: 20180063823
    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: November 7, 2017
    Publication date: March 1, 2018
    Inventors: Hemanth Sampath, Bin Tian, Rahul Tandra, Gwendolyn Denise Barriac, Yan Zhou, Sameer Vermani, Simone Merlin
  • Patent number: 9906391
    Abstract: A method of wirelessly communicating a packet including a first portion for transmission over at least one channel of a first transmission type and a second portion for transmission over at least one channel of a second transmission type. In one aspect, the method includes generating, at a wireless device, a packet including a first portion having a first symbol duration. The packet further includes a second portion having a second symbol duration greater than the first. The second portion can include a plurality of repeated portions of the signal field, the repeated portions having the second symbol duration. The first portion includes a first training field. The method further includes prepending or appending a second training field to the first portion. The second training field has the second symbol duration. The method further includes transmitting the packet.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: February 27, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Bin Tian, Tao Tian, Sameer Vermani, Eric Pierre Rebeiz, Dung Ngoc Doan, Lin Yang, Rahul Tandra