Patents by Inventor Vishakan Ponnampalam

Vishakan Ponnampalam 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: 20180332480
    Abstract: In one embodiment, a method includes accessing a point cloud comprising several points, wherein each point corresponds to a location on a surface of an object located in three-dimensional space; determining whether each point in the point cloud is part of a linear structure, a planar structure, or a volumetric structure; identifying a plurality of point clusters, wherein each point cluster comprises one or more points that are located within a grid segment on a two-dimensional grid derived from the three-dimensional space; determining, for each point cluster, whether the point cluster represents a vertical-linear structure or a portion of a vertical-linear structure; identifying one or more point-cluster pairs, wherein each point-cluster pair includes two point clusters corresponding to one or more vertical-linear structures within a threshold distance in the three-dimensional space; and determining, for each point-cluster pair, whether a line-of-sight exists between each point-cluster in the point-cluster pa
    Type: Application
    Filed: May 10, 2017
    Publication date: November 15, 2018
    Inventors: Guan Pang, Jing Huang, Balmanohar Paluri, Brian Karrer, Ismail Onur Filiz, Birce Tezel, Nicolas Emilio Stier Moses, Vishakan Ponnampalam, Timothy Eric Danford
  • Publication number: 20180302130
    Abstract: A method of sounding and feedback with channel quality information and reduced overhead is provided. A receiving station receives a sounding signal transmitted from an access point over multiple sub-channels of a wide channel in a wireless network. The receiving station detects channel quality based on the received sounding signal for each sub-channel. The receiving station then performs channel estimation based on the received sounding signal and thereby determining feedback information. Finally, the receiving station transmits a feedback message to the access point, the feedback message contains NULL feedback information, reduced feedback information, or channel integrity/quality indicators based on the channel quality information for each sub-channel. Based on the feedback message, the access point may repeat the sounding process, narrow the transmission bandwidth, or select only stations who have indicated uncorrupted channel sounding for MU-MMO transmission.
    Type: Application
    Filed: June 20, 2018
    Publication date: October 18, 2018
    Inventors: James June-Ming WANG, Jianhan LIU, Vishakan PONNAMPALAM, Chao-Chun WANG, Huanchun YE
  • Patent number: 9941940
    Abstract: A communication method for a wireless network is disclosed. The wireless network comprises a plurality of wireless devices. The method comprises transmitting one or multiple packets with an omni-beam by a first wireless device to a second wireless device in a packet exchange during an omni-beam duration to indicate a sectorized-beam duration, receiving the packet(s) by a third wireless device, transmitting/receiving data by the first wireless device using a sectorized beam in a packet exchange with the second wireless device during the sectorized beam duration, and detecting by the third wireless device the sectorized beam packet(s) from the first wireless device and packet(s) from the second wireless device, if no sectorized beam packet(s) from the first wireless device and packet(s) from the second wireless device is detected, the third wireless device starting to communicating with a fourth wireless device.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: April 10, 2018
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: James June-Ming Wang, Jianhan Liu, Yung-Ping Hsu, Chih-Shi Yee, Chao-Chun Wang, Vishakan Ponnampalam
  • Publication number: 20180084563
    Abstract: Channel Optimization in Half Duplex Communications Systems is provided herein. Methods may include obtaining at a first terminal, radio frequency (RF) spectral information local to the first terminal, analyzing at the first terminal, RF spectral information for a second terminal that is not co-located with the first terminal, transmitting data to the second terminal on a second terminal optimal frequency band, and receiving data from the second terminal on the first terminal optimal frequency band, where the first terminal optimal frequency being based upon the RF spectral information local to the first terminal.
    Type: Application
    Filed: November 10, 2017
    Publication date: March 22, 2018
    Inventors: Brian L. Hinman, David Gurevich, Miika Keskinen, Vishakan Ponnampalam, Chiu Ngok Eric Wong
  • Patent number: 9888485
    Abstract: Channel Optimization in Half Duplex Communications Systems is provided herein. Methods may include obtaining at a first terminal, radio frequency (RF) spectral information local to the first terminal, analyzing at the first terminal, RF spectral information for a second terminal that is not co-located with the first terminal, transmitting data to the second terminal on a second terminal optimal frequency band, and receiving data from the second terminal on the first terminal optimal frequency band, where the first terminal optimal frequency being based upon the RF spectral information local to the first terminal.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: February 6, 2018
    Assignee: Mimosa Networks, Inc.
    Inventors: Brian Hinman, David Gurevich, Miika Keskinen, Vishakan Ponnampalam, Chiu Ngok Eric Wong
  • Publication number: 20170238151
    Abstract: Wireless access points providing hybrid 802.11 and scheduled priority access communications are provided herein. An exemplary wireless access point may be configured to communicate with a set of standard access clients using an 802.11 mode of communication during standard access phases, as well as communicate with a set of priority access clients during priority access phases, when the wireless access point is not communicating with the set of standard access clients, using a priority mode of communication.
    Type: Application
    Filed: May 5, 2017
    Publication date: August 17, 2017
    Inventors: Jaime Fink, David Gurevich, Brian L. Hinman, Ashok N. Masilamani, Vishakan Ponnampalam
  • Patent number: 9693388
    Abstract: Wireless access points providing hybrid 802.11 and scheduled priority access communications are provided herein. An exemplary wireless access point may be configured to communicate with a set of standard access clients using an 802.11 mode of communication during standard access phases, as well as communicate with a set of priority access clients during priority access phases, when the wireless access point is not communicating with the set of standard access clients, using a priority mode of communication.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: June 27, 2017
    Assignee: Mimosa Networks, Inc.
    Inventors: Jaime Fink, David Gurevich, Brian L. Hinman, Ashok N. Masilamani, Vishakan Ponnampalam
  • Patent number: 9504049
    Abstract: Channel Optimization in Half Duplex Communications Systems is provided herein. Methods may include obtaining at a first terminal, radio frequency (RF) spectral information local to the first terminal, analyzing at the first terminal, RF spectral information for a second terminal that is not co-located with the first terminal, transmitting data to the second terminal on a second terminal optimal frequency band, and receiving data from the second terminal on the first terminal optimal frequency band, where the first terminal optimal frequency being based upon the RF spectral information local to the first terminal.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: November 22, 2016
    Assignee: Mimosa Networks, Inc.
    Inventors: Brian Hinman, David Gurevich, Miika Keskinen, Vishakan Ponnampalam, Chiu Ngok Eric Wong
  • Publication number: 20160338076
    Abstract: Channel Optimization in Half Duplex Communications Systems is provided herein. Methods may include obtaining at a first terminal, radio frequency (RF) spectral information local to the first terminal, analyzing at the first terminal, RF spectral information for a second terminal that is not co-located with the first terminal, transmitting data to the second terminal on a second terminal optimal frequency band, and receiving data from the second terminal on the first terminal optimal frequency band, where the first terminal optimal frequency being based upon the RF spectral information local to the first terminal.
    Type: Application
    Filed: July 29, 2016
    Publication date: November 17, 2016
    Inventors: Brian Hinman, David Gurevich, Miika Keskinen, Vishakan Ponnampalam, Chiu Ngok Eric Wong
  • Publication number: 20160329940
    Abstract: A method of sounding and feedback with channel quality information and reduced overhead is provided. A receiving station receives a sounding signal transmitted from an access point over multiple sub-channels of a wide channel in a wireless network. The receiving station detects channel quality based on the received sounding signal for each sub-channel. The receiving station then performs channel estimation based on the received sounding signal and thereby determining feedback information. Finally, the receiving station transmits a feedback message to the access point, the feedback message contains NULL feedback information, reduced feedback information, or channel integrity/quality indicators based on the channel quality information for each sub-channel. Based on the feedback message, the access point may repeat the sounding process, narrow the transmission bandwidth, or select only stations who have indicated uncorrupted channel sounding for MU-MMO transmission.
    Type: Application
    Filed: July 15, 2016
    Publication date: November 10, 2016
    Inventors: James June-Ming WANG, Jianhan LIU, Vishakan PONNAMPALAM, Chao-Chun WANG, Huanchun YE
  • Patent number: 9432103
    Abstract: A cellular communication system comprises a Multiple-In Multiple-Out, MIMO, transmitter and receiver. The MIMO transmitter comprises a message generator for generating MIMO messages comprising selected training sequences and transceivers transmitting the messages on a plurality of antennas. The training sequences are selected by a midamble selector from a set of training sequences in response to an associated antenna on which the message is to be transmitted. The set of training sequences is associated with the cell of the MIMO transmitter and comprises disjoint subsets of training sequences for each of the plurality of antennas. The receiver comprises a transmit antenna detector which determines which antenna of the MIMO transmitter the message is transmitted from in response to the training sequence of the received message.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: August 30, 2016
    Assignee: SONY CORPORATION
    Inventors: Peter B. Darwood, Vishakan Ponnampalam, Alan Edward Jones
  • Patent number: 9295103
    Abstract: Wireless access points providing hybrid 802.11 and scheduled priority access communications are provided herein. An exemplary wireless access point may be configured to communicate with a set of standard access clients using an 802.11 mode of communication during standard access phases, as well as communicate with a set of priority access clients during priority access phases, when the wireless access point is not communicating with the set of standard access clients, using a priority mode of communication.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: March 22, 2016
    Assignee: Mimosa Networks, Inc.
    Inventors: Jaime Fink, David Gurevich, Brian Hinman, Ashok N. Masilamani, Vishakan Ponnampalam
  • Patent number: 9277558
    Abstract: The present invention relates to demodulation of radio signals from a base station having collocated transmit antennas, and more particularly to signaling allocation information from a base station to a mobile terminal. The allocation information may include timeslot and code information of allocation to other mobile terminals. Some embodiments of the present invention facilitate a mobile terminal's ability to receive and demodulate a signal containing multiple interfering signals by communicating codes allocated to other mobile terminals.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: March 1, 2016
    Assignee: SONY CORPORATION
    Inventors: Martin W. Beale, Vishakan Ponnampalam
  • Patent number: 9258070
    Abstract: A method of simultaneously providing channel quality feedback information in all valid sub-channels is provided to facilitate and improve the performance of dynamic transmission bandwidth adjustment and fast link adaptation. A receiving device receives a sounding signal over a wide channel in a wireless system. The sounding signal is transmitted from a transmitting device over multiple sub-channels of the wide channel. The receiving device estimates channel quality information based on the sounding signal for each sub-channel. The channel quality information includes estimated average SNR and recommended MCS and other channel quality metrics. The receiving device transmits a feedback message to the transmitting device. The feedback message contains the estimated channel quality information for all valid sub-channels within the transmission bandwidth.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: February 9, 2016
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: James June-Ming Wang, Vishakan Ponnampalam, Jianhan Liu, Chao-Chun Wang, Huanchun Ye
  • Patent number: 9246571
    Abstract: The disclosed invention provides an efficient method for beam training to enable spatial multiplexing MIMO operation and spatial combining in a wireless network. The invention discloses a simple and efficient beam-training algorithm and protocol for MIMO operation that operates in high SNR condition for reliable MIMO operation. In one novel aspect, the best MIMO beam combinations are determined after TX sector sweeping and RX sector sweeping. In addition, the selection criteria includes not only signal quality, but also considers mutual interference and leakage among multiple MIMO spatial streams to improve overall MIMO performance.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: January 26, 2016
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: James June-Ming Wang, Vishakan Ponnampalam, Jianhan Liu, Chao-Chun Wang, Chi-Shi Yee, YungPing Hsu
  • Publication number: 20150319584
    Abstract: Wireless access points providing hybrid 802.11 and scheduled priority access communications are provided herein. An exemplary wireless access point may be configured to communicate with a set of standard access clients using an 802.11 mode of communication during standard access phases, as well as communicate with a set of priority access clients during priority access phases, when the wireless access point is not communicating with the set of standard access clients, using a priority mode of communication.
    Type: Application
    Filed: June 16, 2015
    Publication date: November 5, 2015
    Inventors: Jaime Fink, David Gurevich, Brian L. Hinman, Ashok N. Masilamani, Vishakan Ponnampalam
  • Patent number: 9161387
    Abstract: Wireless access points providing hybrid 802.11 and scheduled priority access communications are provided herein. An exemplary wireless access point may be configured to communicate with a set of standard access clients using an 802.11 mode of communication during standard access phases, as well as communicate with a set of priority access clients during priority access phases, when the wireless access point is not communicating with the set of standard access clients, using a priority mode of communication.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: October 13, 2015
    Assignee: Mimosa Networks, Inc.
    Inventors: Jaime Fink, David Gurevich, Brian Hinman, Ashok N. Masilamani, Vishakan Ponnampalam
  • Publication number: 20150244447
    Abstract: The disclosed invention provides an efficient method for beam training to enable spatial multiplexing MIMO operation and spatial combining in a wireless network. The invention discloses a simple and efficient beam-training algorithm and protocol for MIMO operation that operates in high SNR condition for reliable MIMO operation. In one novel aspect, the best MIMO beam combinations are determined after TX sector sweeping and RX sector sweeping. In addition, the selection criteria includes not only signal quality, but also considers mutual interference and leakage among multiple MIMO spatial streams to improve overall MIMO performance.
    Type: Application
    Filed: April 29, 2015
    Publication date: August 27, 2015
    Inventors: James June-Ming Wang, Vishakan Ponnampalam, Jianhan Liu, Chao-Chun Wang, Chi-Shi Yee, YungPing Hsu
  • Publication number: 20150215952
    Abstract: Channel Optimization in Half Duplex Communications Systems is provided herein. Methods may include obtaining at a first terminal, radio frequency (RF) spectral information local to the first terminal, analyzing at the first terminal, RF spectral information for a second terminal that is not co-located with the first terminal, transmitting data to the second terminal on a second terminal optimal frequency band, and receiving data from the second terminal on the first terminal optimal frequency band, where the first terminal optimal frequency being based upon the RF spectral information local to the first terminal.
    Type: Application
    Filed: July 7, 2014
    Publication date: July 30, 2015
    Inventors: Brian Hinman, David Gurevich, Miika Keskinen, Vishakan Ponnampalam, Chiu Ngok Eric Wong
  • Patent number: 9088984
    Abstract: The present invention relates to demodulation of radio signals from a base station having collocated transmit antennas, and more particularly to signaling allocation information from a base station to a mobile terminal. The allocation information may include timeslot and code information of allocation to other mobile terminals. Some embodiments of the present invention facilitate a mobile terminal's ability to receive and demodulate a signal containing multiple interfering signals by communicating codes allocated to other mobile terminals.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: July 21, 2015
    Assignee: Sony Corporation
    Inventors: Martin W. Beale, Vishakan Ponnampalam