Patents by Inventor Krishna GOMADAM

Krishna GOMADAM 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: 10187125
    Abstract: Apparatuses, methods, and systems of a hybrid node are disclosed. One embodiment of the hybrid node includes a first sector and a second sector. The first sector is operative to transmit a signal through a predetermined transmission channel at each of a first plurality of transmit beam forming settings. The second sector is operative to receive the signal through the predetermined channel at a second plurality of receive beam forming settings for each of more than one of the first plurality of transmit beam forming settings. Further, the node is operative to measure a received signal quality of the received signal at each of the second plurality of receive beam forming settings of the second plurality of antenna elements, for each of the more than one of the first plurality of transmit beam forming settings of the first plurality of antenna elements.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: January 22, 2019
    Assignee: Facebook, Inc.
    Inventors: Sanjai Kohli, Djordje Tujkovic, Krishna Gomadam
  • Patent number: 10177870
    Abstract: Apparatuses, methods, and systems of assigning codes are disclosed. One method includes selecting a plurality of available codes, grouping links of a wireless network into a plurality of groups based on connectivity of the links between sectors of the wireless network, characterizing interference between at least one link of a first group of the plurality of groups and at least one link of a second group of the plurality of groups, and assigning at least one code of the plurality of available codes to the first group and at least one other code of the plurality of available codes to the second group based on the characterizing of the interference.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: January 8, 2019
    Assignee: Facebook, Inc.
    Inventors: Vish Ponnampalam, Krishna Gomadam, Djordje Tujkovic
  • Patent number: 10149337
    Abstract: Methods, apparatuses, and systems for transmitting information between nodes in a point-to-point wireless communication network is disclosed. One method includes constructing, by a sector of a transmitting node, a packet including data that is to be transmitted to a receiving node in the wireless network, wherein the constructed packet includes a short training field, a channel estimation field, a header field, and a data payload, and transmitting by the sector of the transmitting node, a jamming code before the short training field of the constructed packet, thereby reducing a likelihood that the receiving node will decode a different short training field of an interfering packet before the receiving node decodes the short training field of the constructed packet.
    Type: Grant
    Filed: December 18, 2016
    Date of Patent: December 4, 2018
    Assignee: Facebook, Inc.
    Inventors: Djordje Tujkovic, Krishna Gomadam, Vish Ponnampalam
  • Patent number: 10148557
    Abstract: A wireless communication network includes a transmitting node and a receiving node configured to transmit and receive packets between the transmitting node and the receiving node through one or more of a plurality of predetermined micro-routes is disclosed. For an embodiment, the transmitting node is configured to retrieve a first micro-route, transmit packets in a first transmit beamforming direction associated with the first micro-route, transmit packets including one or more training signals in a second transmit beamforming direction associated with a second micro-route of the plurality of predetermined micro-routes that is different than the first transmit beamforming direction associated with the first micro-route, and receive feedback from the receiving node indicating that the second micro-route provides a better communication link than the first micro-route.
    Type: Grant
    Filed: December 18, 2016
    Date of Patent: December 4, 2018
    Assignee: Facebook, Inc.
    Inventors: Krishna Gomadam, Djordje Tujkovic, Sanjai Kohli
  • Patent number: 10116375
    Abstract: A procedure to establish a link in a directional wireless system where two nodes cannot listen to each other unless optimized beamforming pair is used and timing and framing synchronization is acquired. The procedure determines a set of beamforming pairs that the nodes can use for communication in addition to acquiring the framing and timing synchronization. Training packets are periodically transmitted by a transmitter while a receiver listens in each of a number of receive directions. Training packets are sent N times in N directions while a receiver listens in each of M receive directions until all N×M possible transmit and receive direction pair possibilities are tried. The receiver informs the transmitter which transmit and receive direction pairs were successful in creating communication links between the nodes.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: October 30, 2018
    Assignee: Facebook, Inc.
    Inventors: Sanjai Kohli, Djordje Tujkovic, Krishna Gomadam
  • Publication number: 20180007718
    Abstract: Apparatuses, methods, and systems of a node that supports a simultaneous bidirectional wireless link with a second node are disclosed. One embodiment of the node includes a first sector that includes a first transceiver and a first plurality of antennas operative to form a beam directed to a first sector of a second node. The node further includes a second sector that includes a second transceiver and a second plurality of antennas operative to form a beam directed to a second sector of the second node. For at least one time slot of a plurality of time slots, one of the first transceiver or the second transceiver is operative to transmit a first communication signal to the second node while the other of the first transceiver or the second transceiver is operative to receive a second communication signal from the second node.
    Type: Application
    Filed: June 29, 2016
    Publication date: January 4, 2018
    Inventors: Djordje Tujkovic, Krishna Gomadam, Sanjai Kohli
  • Publication number: 20180006686
    Abstract: Apparatuses, methods, and systems of a hybrid node are disclosed. One embodiment of the hybrid node includes a first sector and a second sector. The first sector is operative to transmit a signal through a predetermined transmission channel at each of a first plurality of transmit beam forming settings. The second sector is operative to receive the signal through the predetermined channel at a second plurality of receive beam forming settings for each of more than one of the first plurality of transmit beam forming settings. Further, the node is operative to measure a received signal quality of the received signal at each of the second plurality of receive beam forming settings of the second plurality of antenna elements, for each of the more than one of the first plurality of transmit beam forming settings of the first plurality of antenna elements.
    Type: Application
    Filed: September 6, 2017
    Publication date: January 4, 2018
    Inventors: Sanjai Kohli, Djordje Tujkovic, Krishna Gomadam
  • Patent number: 9787382
    Abstract: A system for transmitting information between nodes in a point-to-point wireless communication system. The system includes a node with an antenna array and a beamformer that is controllable to orient a main lobe of the antenna array in a desired direction. A spacing of the plurality of antenna elements in the array is adjustable to control a direction of a grating lobe of the antenna array to complete a communication link with a node in the network. Signals are simultaneously transmitted in the direction of the main lobe and the grating lobe to different nodes in the network.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: October 10, 2017
    Assignee: Facebook, Inc.
    Inventors: Djordje Tujkovic, Krishna Gomadam
  • Patent number: 9787373
    Abstract: Apparatuses, methods, and systems of a hybrid node are disclosed. One embodiment of the hybrid node includes a first sector and a second sector. The first sector is operative to transmit a signal through a predetermined transmission channel at each of a first plurality of transmit beam forming settings. The second sector is operative to receive the signal through the predetermined channel at a second plurality of receive beam forming settings for each of more than one of the first plurality of transmit beam forming settings. Further, the node is operative to measure a received signal quality of the received signal at each of the second plurality of receive beam forming settings of the second plurality of antenna elements, for each of the more than one of the first plurality of transmit beam forming settings of the first plurality of antenna elements.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: October 10, 2017
    Assignee: Facebook, Inc.
    Inventors: Sanjai Kohli, Djordje Tujkovic, Krishna Gomadam
  • Publication number: 20170264352
    Abstract: A procedure to establish a link in a directional wireless system where two nodes cannot listen to each other unless optimized beamforming pair is used and timing and framing synchronization is acquired. The procedure determines a set of beamforming pairs that the nodes can use for communication in addition to acquiring the framing and timing synchronization. Training packets are periodically transmitted by a transmitter while a receiver listens in each of a number of receive directions. Training packets are sent N times in N directions while a receiver listens in each of M receive directions until all N×M possible transmit and receive direction pair possibilities are tried. The receiver informs the transmitter which transmit and receive direction pairs were successful in creating communication links between the nodes.
    Type: Application
    Filed: May 25, 2017
    Publication date: September 14, 2017
    Inventors: Sanjai Kohli, Djordje Tujkovic, Krishna Gomadam
  • Publication number: 20170195913
    Abstract: Apparatuses, methods, and systems of mitigating packet interference are disclosed. One method includes receiving, by a sector, data to be transmitted over a specific wireless link of a wireless network, configuring a packet for transmission over the specific wireless link, wherein the packet includes a preamble, and the data, and transmitting, by the sector, the configured packet over the specific wireless link. Configuring the packet includes identifying a reference sequence based on the specific wireless link, and inserting the reference sequence into at least a portion of the preamble.
    Type: Application
    Filed: August 26, 2016
    Publication date: July 6, 2017
    Inventors: Krishna Gomadam, Djordje Tujkovic, Vish Ponnampalam
  • Publication number: 20170195025
    Abstract: A procedure to establish a link in a directional wireless system where two nodes cannot listen to each other unless optimized beamforming pair is used and timing and framing synchronization is acquired. The procedure determines a set of beamforming pairs that the nodes can use for communication in addition to acquiring the framing and timing synchronization. Training packets are periodically transmitted by a transmitter while a receiver listens in each of a number of receive directions. Training packets are sent N times in N directions while a receiver listens in each of M receive directions until all N×M possible transmit and receive direction pair possibilities are tried. The receiver informs the transmitter which transmit and receive direction pairs were successful in creating communication links between the nodes.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Inventors: Sanjai Kohli, Djordje Tujkovic, Krishna Gomadam
  • Publication number: 20170195916
    Abstract: Methods, apparatuses, and systems for transmitting information between nodes in a point-to-point wireless communication network is disclosed. One method includes constructing, by a sector of a transmitting node, a packet including data that is to be transmitted to a receiving node in the wireless network, wherein the constructed packet includes a short training field, a channel estimation field, a header field, and a data payload, and transmitting by the sector of the transmitting node, a jamming code before the short training field of the constructed packet, thereby reducing a likelihood that the receiving node will decode a different short training field of an interfering packet before the receiving node decodes the short training field of the constructed packet.
    Type: Application
    Filed: December 18, 2016
    Publication date: July 6, 2017
    Inventors: Djordje Tujkovic, Krishna Gomadam, Vish Ponnampalam
  • Publication number: 20170195145
    Abstract: Apparatuses, methods, and systems of assigning codes are disclosed. One method includes selecting a plurality of available codes, grouping links of a wireless network into a plurality of groups based on connectivity of the links between sectors of the wireless network, characterizing interference between at least one link of a first group of the plurality of groups and at least one link of a second group of the plurality of groups, and assigning at least one code of the plurality of available codes to the first group and at least one other code of the plurality of available codes to the second group based on the characterizing of the interference.
    Type: Application
    Filed: August 26, 2016
    Publication date: July 6, 2017
    Inventors: Vish Ponnampalam, Krishna Gomadam, Djordje Tujkovic
  • Publication number: 20170195215
    Abstract: A wireless communication network includes a transmitting node and a receiving node configured to transmit and receive packets between the transmitting node and the receiving node through one or more of a plurality of predetermined micro-routes is disclosed. For an embodiment, the transmitting node is configured to retrieve a first micro-route, transmit packets in a first transmit beamforming direction associated with the first micro-route, transmit packets including one or more training signals in a second transmit beamforming direction associated with a second micro-route of the plurality of predetermined micro-routes that is different than the first transmit beamforming direction associated with the first micro-route, and receive feedback from the receiving node indicating that the second micro-route provides a better communication link than the first micro-route.
    Type: Application
    Filed: December 18, 2016
    Publication date: July 6, 2017
    Inventors: Krishna Gomadam, Djordje Tujkovic, Sanjai Kohli
  • Publication number: 20170195938
    Abstract: Apparatuses, methods, and systems for charactering and selecting micro-routes between nodes of a wireless network are disclosed. One method includes wirelessly communicating between a first node and a second node through a wireless link formed by at least one micro-route, determining a condition of the at least one micro-route, and selecting at least one other micro-route for communication between the first node and the second node based on a level of correlation between the at least one micro-route and the at least one other micro-route, after determining the condition.
    Type: Application
    Filed: December 18, 2016
    Publication date: July 6, 2017
    Inventors: Krishna Gomadam, Djordje Tujkovic, Sanjai Kohli
  • Patent number: 9647335
    Abstract: A system for transmitting information between nodes in a point-to-point wireless communication system. The system includes a node with an antenna array and a beamformer that is controllable to orient a main lobe of the antenna array in a desired direction. A spacing of the plurality of antenna elements in the array is adjustable to control a direction of a grating lobe of the antenna array to complete a communication link with a node in the network. Signals are simultaneously transmitted in the direction of the main lobe and the grating lobe to different nodes in the network.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: May 9, 2017
    Inventors: Djordje Tujkovic, Krishna Gomadam
  • Patent number: 9544117
    Abstract: Embodiments provide systems and methods for adaptive reference signal mapping in wireless multi-access communication networks, including LTE, WLAN, WiMAX, Bluetooth, etc. In an embodiment, the reference signal mapping configuration is user equipment (UE) specific and can be configured semi-statically or dynamically according to one or more communication related parameters of the UE. The one or more parameters can include, without limitation, a modulation scheme used for communication with the UE, a modulation and coding scheme (MCS) used for communication with the UE, a distance of the UE relative to the base station, an antenna configuration at the UE, interference management capability of the UE, and a rank of the UE.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: January 10, 2017
    Assignee: Broadcom Corporation
    Inventor: Krishna Gomadam
  • Patent number: 9344167
    Abstract: Embodiments provide approaches for sub-sampling a two-component precoder codebook to reduce the overhead associated with signaling the codebook in periodic Channel State Information (CSI) reports from a user equipment (UE) to a base station. In one embodiment, a first component of the codebook is sub-sampled to accommodate a payload capacity of a Physical Uplink Control Channel (PUCCH) CSI Report of Type 1. In another embodiment, both the first component and the second component of the codebook are sub-sampled to accommodate a maximum payload capacity associated with a PUCCH CSI report.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: May 17, 2016
    Assignee: Broadcom Corporation
    Inventors: Krishna Gomadam, Djordje Tujkovic
  • Publication number: 20140362941
    Abstract: Embodiments provide approaches for sub-sampling a two-component precoder codebook to reduce the overhead associated with signaling the codebook in periodic Channel Stale Information (CSI) reports from a user equipment (UE) to a base station. In one embodiment, a first component of the codebook is sub-sampled to accommodate a payload capacity of a Physical Uplink Control Channel (PUCCH) CSI Report of Type 1. In another embodiment, both the first component and the second component of the codebook are sub-sampled to accommodate a maximum payload capacity associated with a PUCCH CSI report.
    Type: Application
    Filed: June 6, 2014
    Publication date: December 11, 2014
    Applicant: Broadcom Corporation
    Inventors: Krishna GOMADAM, Djordje TUJKOVIC