Patents by Inventor Rajakumar Ebenezar Devairakkam

Rajakumar Ebenezar Devairakkam 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: 20230232282
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for implementing multi-user (MU) communication in a wireless mesh network. A first mesh node or a network management unit may collect information from various mesh nodes and form MU association groups based on the information. An MU association group may include an MU group head that coordinates MU group communication to or from member mesh nodes that are in the MU association group. For example, the MU group head may coordinate orthogonal frequency division multiple access (OFDMA) resource unit allocations, or MU multiple-input-multiple-output (MU-MEMO) spatial stream configurations, among other examples. Different MU association groups may be formed for uplink or downlink traffic. The creation of MU association groups may enable a wireless mesh network to realize the advantages of MU group communication within the flexible topology of a mesh environment.
    Type: Application
    Filed: June 30, 2021
    Publication date: July 20, 2023
    Inventors: Vinod BELUR RAMACHANDRA, Xiaolong HUANG, Shanmuganathan PALANISAMY, Rajakumar Ebenezar DEVAIRAKKAM
  • Patent number: 9826448
    Abstract: Managing handover procedures of two or more modems from a serving base station to a target base station includes receiving at least one message indicative of at least one measurement report of radio conditions from at least one modem of the two or more modems; determining, based on the at least one message, whether to handover the two or more modems from the serving base station to the target base station; and upon determining to handover the two or more modems from the serving base station to the target base station, indicating to each of the two or more modems to send to the serving base station a measurement report configured to trigger a respective handover procedure from the serving base station to the target base station.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: November 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Hai Truong Le, Kalyan Kuppuswamy, Srikant Jayaraman, Rajakumar Ebenezar Devairakkam, Ebenezer Pugalenthi Samuel, Ruoheng Liu, Sunil Kumar Kamavaram, Chanakya Malladi
  • Patent number: 9698962
    Abstract: Methods, systems, and devices are described for implementing timing advances in which a propagation delay may exceed a time period of a portion of a radio frame. In some examples, a transmitter may identify a timing advance indicating a time to initiate wireless uplink transmission of a subframe. Such a timing advance may compensate for a propagation delay between the transmitter and a receiver of the wireless uplink transmission. The timing advance may be applied as an integer component and a fractional component in relation to a duration of the subframe, to adjust the time to initiate the wireless uplink transmission of the subframe. The integer component may be used to adjust one or more subframe characteristics, and the fractional component that may be used to adjust the time to initiate the wireless uplink transmission of the subframe.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: July 4, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Venkatraman Rajagopalan, Srikant Jayaraman, Ruoheng Liu, Rajakumar Ebenezar Devairakkam
  • Patent number: 9615344
    Abstract: Methods, systems, and devices are described for establishing a wireless communications link at an aircraft terminal (AT). An AT may determine a timing offset based on the propagation delay between the AT and a ground station, which in some cases may be more than 100 kilometers away. The AT may then transmit an initial access message to the ground station based on the determined timing offset. In some embodiments, the AT may receive an access response message from the ground station that includes a timing alignment value and adjust the timing offset based on this value. The AT may transmit a connection message to the ground station that includes AT location information. This information may be used by the ground station to facilitate beamforming.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: April 4, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ruoheng Liu, June Namgoong, Hai Le, Srikant Jayaraman, Sunil Kamavaram, Rajakumar Ebenezar Devairakkam, Venkatraman Rajagopalan
  • Publication number: 20160014657
    Abstract: Managing handover procedures of two or more modems from a serving base station to a target base station includes receiving at least one message indicative of at least one measurement report of radio conditions from at least one modem of the two or more modems; determining, based on the at least one message, whether to handover the two or more modems from the serving base station to the target base station; and upon determining to handover the two or more modems from the serving base station to the target base station, indicating to each of the two or more modems to send to the serving base station a measurement report configured to trigger a respective handover procedure from the serving base station to the target base station.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 14, 2016
    Inventors: Hai Truong LE, Kalyan KUPPUSWAMY, Srikant JAYARAMAN, Rajakumar Ebenezar DEVAIRAKKAM, Ebenezer Pugalenthi SAMUEL, Ruoheng LlU, Sunil Kumar KAMAVARAM, Chanakya MALLADI
  • Publication number: 20150334707
    Abstract: Methods, systems, and devices are described for implementing timing advances in which a propagation delay may exceed a time period of a portion of a radio frame. In some examples, a transmitter may identify a timing advance indicating a time to initiate wireless uplink transmission of a subframe. Such a timing advance may compensate for a propagation delay between the transmitter and a receiver of the wireless uplink transmission. The timing advance may be applied as an integer component and a fractional component in relation to a duration of the subframe, to adjust the time to initiate the wireless uplink transmission of the subframe. The integer component may be used to adjust one or more subframe characteristics, and the fractional component that may be used to adjust the time to initiate the wireless uplink transmission of the subframe.
    Type: Application
    Filed: May 6, 2015
    Publication date: November 19, 2015
    Inventors: Venkatraman Rajagopalan, Srikant Jayaraman, Ruoheng Liu, Rajakumar Ebenezar Devairakkam
  • Publication number: 20150181544
    Abstract: Methods, systems, and devices are described for establishing a wireless communications link at an aircraft terminal (AT). An AT may determine a timing offset based on the propagation delay between the AT and a ground station, which in some cases may be more than 100 kilometers away. The AT may then transmit an initial access message to the ground station based on the determined timing offset. In some embodiments, the AT may receive an access response message from the ground station that includes a timing alignment value and adjust the timing offset based on this value. The AT may transmit a connection message to the ground station that includes AT location information. This information may be used by the ground station to facilitate beamforming.
    Type: Application
    Filed: April 29, 2014
    Publication date: June 25, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Ruoheng Liu, June Namgoong, Hai Le, Srikant Jayaraman, Sunil Kamavaram, Rajakumar Ebenezar Devairakkam, Venkatraman Rajagopalan