Patents by Inventor Krishna Kamal Sayana

Krishna Kamal Sayana 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: 10349328
    Abstract: A method includes receiving one or more data packets from an external network when a user device connects to a first network. The user device is configured for dual connectivity with the first network and a second network. The method also includes transmitting a measurement configuration to a modem of the user device and receiving a measurement report from the modem. When it is feasible for the modem to perform a network change, the method includes transmitting a network change command to the modem. The network change command causes the modem to perform the network switch to connect the user device to the second network.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: July 9, 2019
    Assignee: Google LLC
    Inventors: Mitchell Trott, Krishna Kamal Sayana, Dutt Kalapatapu, Rajeev Koodli, Hassan Sipra
  • Publication number: 20180027466
    Abstract: A method includes receiving one or more data packets from an external network when a user device connects to a first network. The user device is configured for dual connectivity with the first network and a second network. The method also includes transmitting a measurement configuration to a modem of the user device and receiving a measurement report from the modem. When it is feasible for the modem to perform a network change, the method includes transmitting a network change command to the modem. The network change command causes the modem to perform the network switch to connect the user device to the second network.
    Type: Application
    Filed: July 17, 2017
    Publication date: January 25, 2018
    Applicant: Google Inc.
    Inventors: Mitchell Trott, Krishna Kamal Sayana, Dutt Kalapatapu, Rajeev Koodli, Hassan Sipra
  • Patent number: 9844038
    Abstract: A method for link adaptation at a mobile station can include the steps of computing mutual information per coded bit (MIB) metrics on at least one sub-channel for one or more candidate modulation types. The method may average the MIB metrics over at least two sub-channels, generate feedback information including MIB metrics for the plurality of candidate modulation types, and transmit the feedback information to a base station.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: December 12, 2017
    Assignee: Google Technology Holdings LLC
    Inventors: Krishna Kamal Sayana, Xiangyang Zhuang
  • Publication number: 20170272131
    Abstract: A communication system includes an antenna system, data processing hardware in communication with the antenna system, and memory hardware in communication with the data processing hardware and the antenna system. The memory hardware stores instructions that when executed on the data processing hardware cause the data processing hardware to perform operations. These operations include transmitting a first communication signal to a first coverage area and determining an interference to the first communication signal by a second communication signal. The operations further include reducing the interference to the first communication signal by a second communication signal by at least one of: adjusting the first coverage area; or adjusting a power of the first signal.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 21, 2017
    Applicant: Google Inc.
    Inventors: Sharath Ananth, Krishna Kamal Sayana, Mitchell Trott
  • Patent number: 9628230
    Abstract: A wireless communication terminal including a transceiver coupled to a processor and corresponding methods are disclosed. The processor is configured to determine resource elements that carry data intended for the terminal from a set of allocated resource elements that carry data intended for the terminal excluding at least resource elements associated with a first set of one or more resource elements of a particular type that are shifted relative to a known reference signal pattern. The processor is also configured to decode the resource elements that carry the data intended for the terminal based on the resource elements that carry the data intended for the terminal.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: April 18, 2017
    Assignee: Google Technology Holdings LLC
    Inventors: Krishna Kamal Sayana, Tyler Brown, Xiangyang Zhuang
  • Patent number: 9509377
    Abstract: A communication system provides for adaptive rank determination, for example, a rank 2 transmission in instances where a rank 1 transmission may be indicated under supported feedback modes in current standards where no explicit power adaptation can be assumed, for example, where a user equipment (UE) is limited to reporting a rank 1 channel due to a large dynamic range of a signal or due to a signal received by the UE from one base station (BS) antenna port drowning out a signal received by the UE from another BS antenna port. The communication system provides for the UE to implement rank 2 transmission in such instances by using per-antenna port power control at a BS serving the UE. In one embodiment, the BS controls the rank determination at the UE by signaling transmit power or power offset related parameters to use for rank and transmission parameters determination and feedback.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: November 29, 2016
    Assignee: Google Technology Holdings LLC
    Inventors: Krishna Kamal Sayana, Tyler A. Brown, Robert T. Love, Vijay Nangia
  • Patent number: 9496938
    Abstract: A method for configurable spatial channel information feedback in wireless communication systems is disclosed including receiving, at the wireless communication device, transmission from a plurality of antennas, receiving an indication of a feedback mode for feeding back spatial channel information that is based on correlations among at least some of the plurality of antennas, decomposing a correlation matrix representative of the correlations among at least some of the plurality of antennas into at least two Kronecker components, and feeding back parameters representative of the Kronecker components according to the feedback mode indicated.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: November 15, 2016
    Assignee: Google Technology Holdings LLC
    Inventors: Xiangyang Zhuang, Krishna Kamal Sayana, Kenneth A Stewart
  • Patent number: 9401750
    Abstract: A method for two component feedback in wireless communication systems is disclosed, with a wireless communication device sending a first representation of a first matrix chosen from a first codebook, wherein the first matrix has at least two columns, the wireless communication device sending a second representation of a second matrix chosen from a second codebook, and the base station obtaining a precoder from the first representation and the second representation.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: July 26, 2016
    Assignee: Google Technology Holdings LLC
    Inventors: Krishna Kamal Sayana, Xiangyang Zhuang
  • Publication number: 20160173245
    Abstract: A wireless communication terminal including a transceiver coupled to a processor and corresponding methods are disclosed. The processor is configured to determine resource elements that carry data intended for the terminal from a set of allocated resource elements that carry data intended for the terminal excluding at least resource elements associated with a first set of one or more resource elements of a particular type that are shifted relative to a known reference signal pattern. The processor is also configured to decode the resource elements that carry the data intended for the terminal based on the resource elements that carry the data intended for the terminal.
    Type: Application
    Filed: June 26, 2015
    Publication date: June 16, 2016
    Applicant: GOOGLE INC.
    Inventors: Krishna Kamal Sayana, Tyler Brown, Xiangyang Zhuang
  • Publication number: 20160080053
    Abstract: A method for two component feedback in wireless communication systems is disclosed, with a wireless communication device sending a first representation of a first matrix chosen from a first codebook, wherein the first matrix has at least two columns, the wireless communication device sending a second representation of a second matrix chosen from a second codebook, and the base station obtaining a precoder from the first representation and the second representation.
    Type: Application
    Filed: November 25, 2015
    Publication date: March 17, 2016
    Inventors: Krishna Kamal Sayana, Xiangyang Zhuang
  • Patent number: 9252918
    Abstract: A communication system is provided wherein a user equipment (UE) receives control information from a wireless network. The UE monitors control channel candidates using common reference signals (CRS) and monitors enhanced control channel candidates using demodulation reference signals (DMRS) when the UE is configured in a first transmission mode, such as transmission mode 9, for receiving a downlink shared traffic channel based on DMRS. The UE monitors control channel candidates only using CRS when the UE is configured in a second transmission mode, such as any of transmission modes 1-6, for receiving a downlink shared traffic channel based on CRS. The UE then receives downlink control information (DCI) in a subframe in one of the monitored control channel candidates or enhanced control channel candidates in the subframe.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: February 2, 2016
    Assignee: Google Technology Holdings LLC
    Inventors: Ravikiran Nory, Sandeep H. Krishnamurthy, Robert T. Love, Vijay Nangia, Ajit Nimbalker, Krishna Kamal Sayana, Xiangyang Zhuang
  • Publication number: 20160029372
    Abstract: A method for link adaptation at a mobile station can include the steps of computing mutual information per coded bit (MIB) metrics on at least one sub-channel for one or more candidate modulation types. The method may average the MIB metrics over at least two sub-channels, generate feedback information including MIB metrics for the plurality of candidate modulation types, and transmit the feedback information to a base station.
    Type: Application
    Filed: July 28, 2015
    Publication date: January 28, 2016
    Inventors: Krishna Kamal Sayana, Xiangyang Zhuang
  • Patent number: 9203489
    Abstract: A method for two component feedback in wireless communication systems is disclosed, with a wireless communication device sending a first representation of a first matrix chosen from a first codebook, wherein the first matrix has at least two columns, the wireless communication device sending a second representation of a second matrix chosen from a second codebook, and the base station obtaining a precoder from the first representation and the second representation.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: December 1, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Krishna Kamal Sayana, Xiangyang Zhuang
  • Patent number: 9197387
    Abstract: A user equipment (UE) receives a signal comprising multiple resource blocks and configured for receiving a subframe comprising multiple time-frequency resources, the time-frequency resources comprising at least two control channel candidates. The UE determines a first control channel candidate of the at least two control channel candidates in the subframe, determines a first antenna port (AP) associated with the first control channel candidate, decodes the first control channel candidate based on the first AP, determines a second control channel candidate of the at least two control channel candidates in the subframe, determines a second AP associated with the second control channel candidate, and decodes the second control channel candidate based on the second AP, wherein the AP used for decoding the first control channel candidate is distinct from the AP used for decoding the second control channel candidate.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: November 24, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Ravikiran Nory, Sandeep H. Krishnamurthy, Robert T. Love, Vijay Nangia, Ajit Nimbalker, Krishna Kamal Sayana, Xiangyang Zhuang
  • Patent number: 9143293
    Abstract: A wireless communication terminal including a transceiver coupled to a processor and corresponding methods are disclosed. The processor is configured to determine resource elements that carry data intended for the terminal from a set of allocated resource elements that carry data intended for the terminal excluding at least resource elements associated with a first set of one or more resource elements of a particular type that are shifted relative to a known reference signal pattern. The processor is also configured to decode the resource elements that carry the data intended for the terminal based on the resource elements that carry the data intended for the terminal.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: September 22, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Krishna Kamal Sayana, Tyler Brown, Xiangyang Zhuang
  • Patent number: 9125196
    Abstract: A method for link adaptation at a mobile station (120) can include the steps of computing (220) mutual information per coded bit (MIB) metrics on at least one sub-channel for one or more candidate modulation types. The method may average the MIB metrics over at least two sub-channels, generate feedback information including MIB metrics for the plurality of candidate modulation types, and transmit (245) the feedback information to a base station.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: September 1, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Krishna Kamal Sayana, Xiangyang Zhuang
  • Patent number: 9077569
    Abstract: A wireless communication terminal receives a first set of pilot signal resource elements and control information in spatial layers in a first resource block in a subframe and a second set of pilot signal resource elements and data in spatial layers in a second resource block in the subframe, wherein the first and second resource blocks span a set of time symbols in a sub-frame, the first resource blocks span a first set of frequency carriers in the sub-frame, and the second resource blocks span a second set of frequency carriers in the sub-frame. The terminal decodes the spatial layers in which the control information is received using the first set of pilot signal resource elements. The terminal also decodes the spatial layers in which the data are received in the second resource block using the second set of pilot signal resource elements.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: July 7, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Ravikiran Nory, Vijay Nangia, Ajit Nimbalker, Krishna Kamal Sayana
  • Publication number: 20150049829
    Abstract: A method for configurable spatial channel information feedback in wireless communication systems is disclosed including receiving, at the wireless communication device, transmission from a plurality of antennas, receiving an indication of a feedback mode for feeding back spatial channel information that is based on correlations among at least some of the plurality of antennas, decomposing a correlation matrix representative of the correlations among at least some of the plurality of antennas into at least two Kronecker components, and feeding back parameters representative of the Kronecker components according to the feedback mode indicated.
    Type: Application
    Filed: September 25, 2014
    Publication date: February 19, 2015
    Inventors: Xiangyang Zhuang, Krishna Kamal Sayana, Kenneth A. Stewart
  • Patent number: 8953699
    Abstract: Methods in a wireless terminal are described for supporting co-ordinated multipoint transmissions including joint transmissions from two or more transmission points, specifically the method of receiving indication of two or more CSI reference signal configurations, each CSI reference signal configuration representing one or more antenna ports comprising a set of antenna ports; determining a first set of transmission parameters corresponding to a first set of antenna ports corresponding to a first CSI reference signal configuration and a second set of transmission parameters corresponding to a second set of antenna ports corresponding to a second CSI reference signal configuration; the first set and second set of transmission parameters determined to maximize the sum data rate for simultaneous transmission from the first set and the second set of antenna ports; conveying, to the base station, information pertaining to the first set of transmission parameters and the second set of transmission parameters.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: February 10, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Krishna Kamal Sayana, Robert T. Love
  • Publication number: 20140376652
    Abstract: A method for two component feedback in wireless communication systems is disclosed, with a wireless communication device sending a first representation of a first matrix chosen from a first codebook, wherein the first matrix has at least two columns, the wireless communication device sending a second representation of a second matrix chosen from a second codebook, and the base station obtaining a precoder from the first representation and the second representation.
    Type: Application
    Filed: June 24, 2013
    Publication date: December 25, 2014
    Applicant: MOTOROLA MOBILITY LLC
    Inventors: Krishna Kamal Sayana, Xiangyang Zhuang