Patents by Inventor Sriram Lakshmanan

Sriram Lakshmanan 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: 11605008
    Abstract: A computer-implemented method includes: determining, by a computer device, classifications of plural messages sent amongst plural users; detecting, by the computer device, actions performed by users in response to receiving ones of the plural messages; determining, by the computer device, insights based on the determined classifications and the detected actions; automatically generating, by the computer device, at least one new rule based on at least one of the insights; and automatically applying, by the computer device, the at least one new rule to new messages sent amongst the plural users.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: March 14, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Sriram Lakshmanan
  • Publication number: 20220078704
    Abstract: Embodiments disclosed herein relate to reducing power consumption of an electronic device scanning for wireless communication signals while maintaining or even improving an efficiency of the scanning operations. To do so, the electronic device may include more than one scan core, such as a main core and a receiving core. The receiving core may have limited functionality compared to the main core. For example, the receiving core may only receive wireless signals (including scanning for wireless signals). That is, the receiving core may not support certain operations that consume relative high power that are supported by the main core, such as transmission of signals. In this way, operation of the receiving core, either in place of or in addition to the main core, may reduce power consumption of the electronic device by avoiding high power consuming operations, such as data transmission, while scanning for various signals.
    Type: Application
    Filed: July 12, 2021
    Publication date: March 10, 2022
    Inventors: Sriram Lakshmanan, Tushar Ramanlal Shah, Udaykumar R. Raval, Bernd Willi Adler, Dongwoon Hahn, Shehla S. Rana, Yang Yu, Rajneesh Kumar, Veerendra Boodannavar, Yann Ly-Gagnon, Duy N. Phan, Karan Sawhney, Rohit Sharma, Sarin S. Mehta
  • Patent number: 10616928
    Abstract: Embodiments for performing, by a wireless device, a procedure for auto-joining a wireless network based on factors associated with the wireless networks are provided. The embodiments include determining a current location of the wireless device. The wireless device stores information regarding nearby known networks associated with the current location of the wireless device and may select a candidate network from the nearby known networks based on a network score associated with the candidate network.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: April 7, 2020
    Assignee: APPLE INC.
    Inventors: Vinesh Pallen, Ronald K. Huang, Chaitanya Mannemala, Christopher R. Purcell, Sriram Lakshmanan
  • Publication number: 20200104728
    Abstract: A computer-implemented method includes: determining, by a computer device, classifications of plural messages sent amongst plural users; detecting, by the computer device, actions performed by users in response to receiving ones of the plural messages; determining, by the computer device, insights based on the determined classifications and the detected actions; automatically generating, by the computer device, at least one new rule based on at least one of the insights; and automatically applying, by the computer device, the at least one new rule to new messages sent amongst the plural users.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 2, 2020
    Inventor: Sriram Lakshmanan
  • Publication number: 20190098674
    Abstract: Embodiments for performing, by a wireless device, a procedure for auto-joining a wireless network based on factors associated with the wireless networks are provided. The embodiments include determining a current location of the wireless device. The wireless device stores information regarding nearby known networks associated with the current location of the wireless device and may select a candidate network from the nearby known networks based on a network score associated with the candidate network.
    Type: Application
    Filed: September 27, 2017
    Publication date: March 28, 2019
    Applicant: Apple Inc.
    Inventors: Vinesh PALLEN, Ronald K. Huang, Chaitanya Mannemala, Christopher R. Purcell, Sriram Lakshmanan
  • Patent number: 10070339
    Abstract: Apparatus and methods for configuring wireless circuitry of a wireless device to optimize power consumption based on operating states of the wireless device are disclosed. When associating with or while associated with a multiple-input multiple-output (MIMO) capable wireless local area network (WLAN) access point (AP), the wireless device configures the wireless circuitry to use a MIMO mode that includes at least two spatial streams for communication with multiple radio frequency (RF) receive chains active, a single-input single-output (SISO) mode or a multiple-input single-output (MISO) mode that includes only one spatial stream and a single RF receive chain active, or a single-input multiple-output (SIMO) mode that includes only one spatial stream and multiple RF receive chains active, based on balancing application requirements for data throughput with power saving modes to conserve battery levels. MIMO modes can be used when an active application benefits from MIMO rates or when transferring large files.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: September 4, 2018
    Assignee: Apple Inc.
    Inventors: Kapil Chhabra, Udaykumar R. Raval, Zheng Zeng, Veerendra Boodannavar, Sriram Lakshmanan, Saumin Shah
  • Publication number: 20160359661
    Abstract: Apparatus and methods for configuring wireless circuitry of a wireless device to optimize power consumption based on operating states of the wireless device are disclosed. When associating with or while associated with a multiple-input multiple-output (MIMO) capable wireless local area network (WLAN) access point (AP), the wireless device configures the wireless circuitry to use a MIMO mode that includes at least two spatial streams for communication with multiple radio frequency (RF) receive chains active, a single-input single-output (SISO) mode or a multiple-input single-output (MISO) mode that includes only one spatial stream and a single RF receive chain active, or a single-input multiple-output (SIMO) mode that includes only one spatial stream and multiple RF receive chains active, based on balancing application requirements for data throughput with power saving modes to conserve battery levels. MIMO modes can be used when an active application benefits from MIMO rates or when transferring large files.
    Type: Application
    Filed: May 26, 2016
    Publication date: December 8, 2016
    Inventors: Kapil CHHABRA, Udaykumar R. RAVAL, Zheng ZENG, Veerendra BOODANNAVAR, Sriram LAKSHMANAN, Saumin SHAH
  • Patent number: 8380133
    Abstract: Beamforming methods and systems are described in which differential channel estimation can be computed based on measured power at receiver. Simultaneous activation of antennas in separate pairs can be used to determine relative phases of antennas with respect to a reference antenna based on the power measurements. In turn, the beam forming signals can be weighted in accordance with the relative phases to adapt the signals to a multipath environment. Existing power measurement capabilities of conventional receivers can be employed to achieve approximate channel estimates.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: February 19, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Sriram Lakshmanan, Karthikeyan Sundaresan
  • Patent number: 8340584
    Abstract: Systems and methods are disclosed for transmitting signals between a transmitter and a receiver by differentially estimating channel coefficients for each of the antenna elements relative to a reference antenna element; determining beam weights to remove oscillator induced phase or offset; and applying a correction (beamforming solution) at the transmitter to make the phase of the received signal from different antenna elements to be coherently combined at the receiver.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: December 25, 2012
    Assignee: NEC Laboratories America, Inc.
    Inventors: Sriram Lakshmanan, Karthikeyan Sundaresan, Ravindranath Kokku, Mohammad Ali Khojastepour
  • Patent number: 8179841
    Abstract: Wireless communication collision coding devices, systems, and methods are provided. According to some embodiments, wireless communication systems can generally comprise a plurality of wireless access points and wireless clients. The wireless access points can be controlled by a network controller. The wireless access points can be configured to enable a plurality of wireless clients to wirelessly connect to the wireless access points. The wireless access points can be configured to encode data packets destined for the wireless clients with a collision coding scheme so that wireless data packets concurrently transmitted from at least two wireless access points colliding in air can be decoded at the wireless clients with the collision coding scheme so that data packets are not affected by collisions with another data packet. Other aspects, embodiments, and features, are also claimed and described.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: May 15, 2012
    Assignee: Georgia Tech Research Corporation
    Inventors: Raghupathy Sivakumar, Sriram Lakshmanan, Cheng-Lin Tsao
  • Publication number: 20100285752
    Abstract: Beamforming methods and systems are described in which differential channel estimation can be computed based on measured power at receiver. Simultaneous activation of antennas in separate pairs can be used to determine relative phases of antennas with respect to a reference antenna based on the power measurements. In turn, the beam forming signals can be weighted in accordance with the relative phases to adapt the signals to a multipath environment. Existing power measurement capabilities of conventional receivers can be employed to achieve approximate channel estimates.
    Type: Application
    Filed: March 16, 2010
    Publication date: November 11, 2010
    Applicant: NEC Laboratories America, Inc.
    Inventors: Sriram Lakshmanan, Karthikeyan Sundaresan
  • Publication number: 20100214983
    Abstract: Wireless communication collision coding devices, systems, and methods are provided. According to some embodiments, wireless communication systems can generally comprise a plurality of wireless access points and wireless clients. The wireless access points can be controlled by a network controller. The wireless access points can be configured to enable a plurality of wireless clients to wirelessly connect to the wireless access points. The wireless access points can be configured to encode data packets destined for the wireless clients with a collision coding scheme so that wireless data packets concurrently transmitted from at least two wireless access points colliding in air can be decoded at the wireless clients with the collision coding scheme so that data packets are not affected by collisions with another data packet. Other aspects, embodiments, and features, are also claimed and described.
    Type: Application
    Filed: January 20, 2010
    Publication date: August 26, 2010
    Applicant: Georgia Tech Research Corporation
    Inventors: Raghupathy Sivakumar, Sriram Lakshmanan, Cheng-Lin Tsao
  • Publication number: 20100056059
    Abstract: Systems and methods are disclosed for transmitting signals between a transmitter and a receiver by differentially estimating channel coefficients for each of the antenna elements relative to a reference antenna element; determining beam weights to remove oscillator induced phase or offset; and applying a correction (beamforming solution) at the transmitter to make the phase of the received signal from different antenna elements to be coherently combined at the receiver.
    Type: Application
    Filed: February 9, 2009
    Publication date: March 4, 2010
    Applicant: NEC LABORATORIES AMERICA, INC.
    Inventors: Sriram Lakshmanan, Karthikeyan Sundaresan, Ravindranath Kokku, Mohammad Ali Khojastepour