Patents by Inventor Sam Padinjaremannil Alex
Sam Padinjaremannil Alex 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).
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Patent number: 10644766Abstract: Apparatuses, methods, and systems for MIMO inter-stream interference cancellation are disclosed. One method includes determining a channel matrix between a plurality of transmitting antennas of a transmitter and a plurality of receiving antennas of a receiver, determining a plurality of channel propagation delays based on a propagation delay between each of the plurality of transmitting antennas and each of the plurality of receiving antennas, determining differences in the plurality of channel propagation delays, preprocessing, by the transmitter, streams of symbols for each transmitting antenna for transmission based on the differences in the plurality of channel propagation delays and based on the channel matrix, and transmitting, by the transmitter, the preprocessed symbol streams through the plurality of transmitting antennas.Type: GrantFiled: August 23, 2018Date of Patent: May 5, 2020Assignee: Facebook, Inc.Inventors: Qi Qu, Sam Padinjaremannil Alex, Ali Yazdan, Abhishek Tiwari, Yan Yan, Hongyu Zhou, Pratheep Bondalapati
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Patent number: 10454540Abstract: Apparatuses, methods, and systems zone precoding are disclosed. One method includes determining a transmission zone for each of the plurality of users, wherein the transmission zone includes an angle of direction of a directional beam to each user, and a deviation of the angle of direction. Determining a precoding of transmission signals to each of the plurality of users from the base station based on the transmission zone associated with the user, and constructing the precoding for each user by adjusting the initial precoding for each user based on the transmission zone determined for each of the other users.Type: GrantFiled: June 9, 2019Date of Patent: October 22, 2019Assignee: Facebook, Inc.Inventors: Ahmed Alkhateeb, Sam Padinjaremannil Alex, Ali Yazdan, Qi Qu
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Patent number: 10433307Abstract: A head-mounted display (HMD) is wirelessly coupled to a console or a relay depending on the relative positions of the HMD, the console, and the relay. The HMD communicates wirelessly with the console using a beam that is oriented in a particular direction. As the position of the HMD changes, the quality of the communication link between the HMD and the console may degrade. In response to the degradation, the HMD forms a communication link with a relay, which operates as an intermediary between the HMD and the console. The relay communicates with the HMD over a dedicated communication channel that is isolated from the communication channel over which the relay communicates with the console.Type: GrantFiled: April 20, 2017Date of Patent: October 1, 2019Assignee: Facebook Technologies, LLCInventors: Qi Qu, Hongyu Zhou, Ganesh Venkatraman, Ryan Hamilton Brown, Lyle David Bainbridge, Sam Padinjaremannil Alex, Ali Yazdan, Nirav Rajendra Patel
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Publication number: 20190296806Abstract: Apparatuses, methods, and systems zone precoding are disclosed. One method includes determining a transmission zone for each of the plurality of users, wherein the transmission zone includes an angle of direction of a directional beam to each user, and a deviation of the angle of direction. Determining a precoding of transmission signals to each of the plurality of users from the base station based on the transmission zone associated with the user, and constructing the precoding for each user by adjusting the initial precoding for each user based on the transmission zone determined for each of the other users.Type: ApplicationFiled: June 9, 2019Publication date: September 26, 2019Inventors: Ahmed Alkhateeb, Sam Padinjaremannil Alex, Ali YAZDAN, Qi Qu
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Patent number: 10361759Abstract: Apparatuses, methods, and systems zone precoding are disclosed. One method includes determining a transmission zone for each of the plurality of users, wherein the transmission zone includes an angle of direction of a directional beam to each user, and a deviation of the angle of direction. Determining a precoding of transmission signals to each of the plurality of users from the base station, including determining an initial precoding for each of the users based on the transmission zone associated with the user, and constructing the precoding for each user by adjusting the initial precoding for each user based on the transmission zone determined for each of the other users.Type: GrantFiled: December 5, 2018Date of Patent: July 23, 2019Assignee: Facebook, Inc.Inventors: Ahmed Alkhateeb, Sam Padinjaremannil Alex, Ali Yazdan, Qi Qu
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Patent number: 10355777Abstract: Systems and associated methods for adaptive beam aggregation in wireless communications between unmanned aerial vehicles (UAVs) and ground-based stations are disclosed herein. In some embodiments, a method for transmitting wireless data between an unmanned aerial vehicle (UAV) and a customer premise equipment (CPE) station includes transmitting a first wireless data between a first antenna array and a first CPE station and transmitting a second wireless data between a second antenna array and a second CPE station. The first and second antenna arrays can include one or more individual antennas of the UAV.Type: GrantFiled: August 16, 2017Date of Patent: July 16, 2019Assignee: Facebook, Inc.Inventors: Hong Gan, Matthew Stoneback, Wilhelmus Hendrikus Theunissen, Michael Tseytlin, Raymond R. Blasing, Gordon Michael Coutts, Sam Padinjaremannil Alex
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Patent number: 10326500Abstract: Embodiments of the present disclosure support a head-mounted display (HMD) wirelessly coupled to a console. The HMD includes a positional tracking system, a beam controller and a transceiver. The positional tracking system tracks position of the HMD and generates positional information describing the tracked position of the HMD. The transceiver communicates with a console via a wireless channel, in accordance with communication instructions, the communication instructions causing the transceiver to communicate over one directional beam of a plurality of directional beams. The beam controller determines a change in the positional information. Based on the change to the positional information, the beam controller determines a directional beam of the plurality of directional beams. The beam controller further generates the communication instructions identifying the determined directional beam, and provides the communication instructions to the transceiver.Type: GrantFiled: September 5, 2018Date of Patent: June 18, 2019Assignee: Facebook Technologies, LLCInventors: Qi Qu, Ganesh Venkatraman, Hongyu Zhou, Ryan Hamilton Brown, Oskar Linde, Lyle David Bainbridge, Matthew James Devoe, Ali Yazdan, Sam Padinjaremannil Alex, Nirav Rajendra Patel
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Publication number: 20190115959Abstract: Apparatuses, methods, and systems zone precoding are disclosed. One method includes determining a transmission zone for each of the plurality of users, wherein the transmission zone includes an angle of direction of a directional beam to each user, and a deviation of the angle of direction. Determining a precoding of transmission signals to each of the plurality of users from the base station, including determining an initial precoding for each of the users based on the transmission zone associated with the user, and constructing the precoding for each user by adjusting the initial precoding for each user based on the transmission zone determined for each of the other users.Type: ApplicationFiled: December 5, 2018Publication date: April 18, 2019Inventors: Ahmed Alkhateeb, Sam Padinjaremannil Alex, Ali YAZDAN, Qi Qu
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Patent number: 10236968Abstract: Systems and methods for communicating in a point to multipoint (PTMP) network that includes an aerial station and a plurality of ground stations. The method includes the aerial station receiving positional information of a ground station of the plurality of the ground stations, selecting antenna elements on a phased antenna array for generating a directional beam based on the positional information, sweeping the directional beam to cover the plurality of ground stations, determining that the directional beam has a beam width sufficient to cover the plurality of ground stations and a transmit power sufficient to provide signals to the ground stations based on the sweeping of the directional beam; and establishing a radio link between the aerial station and the ground station in the plurality of ground stations.Type: GrantFiled: August 18, 2017Date of Patent: March 19, 2019Assignee: Facebook, Inc.Inventor: Sam Padinjaremannil Alex
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Patent number: 10236961Abstract: Apparatuses, methods, and systems for processing beamforming signals of a passive time-delay structure are disclosed. One apparatus includes a node that includes baseband processing circuitry that is operative to receive and processes transmission signals, a passive time-delay structure that is preconfigured to generate a plurality of output signal, an antenna array, wherein the antenna array is operative to receive and transmit the plurality of output signals of the passive time-delay structure, wherein delays of the passive time-delay structure provide for the formation of a beamforming pattern by the transmitted plurality of output signals, and a controller. The controller is operative to determine a characterization of the beamforming pattern. The baseband processing circuitry operates to process the transmission signals based at least in part on the characterization of the beamforming pattern, and the node transmits the processed transmission signals to the one or more transceivers.Type: GrantFiled: June 16, 2018Date of Patent: March 19, 2019Assignee: Facebook, Inc.Inventors: Gordon Michael Coutts, Sam Padinjaremannil Alex
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Publication number: 20190020391Abstract: Apparatuses, methods, and systems for processing beamforming signals of a passive time-delay structure are disclosed. One apparatus includes a node that includes baseband processing circuitry that is operatative to receive and processes transmission signals, a passive time-delay structure that is preconfigured to generate a plurality of output signal, an antenna array, wherein the antenna array is operative to receive and transmit the plurality of output signals of the passive time-delay structure, wherein delays of the passive time-delay structure provide for the formation of a beamforming pattern by the transmitted plurality of output signals, and a controller. The controller is operative to determine a characterization of the beamforming pattern. The baseband processing circuitry operates to process the transmission signals based at least in part on the characterization of the beamforming pattern, and the node transmits the processed transmission signals to the one or more transceivers.Type: ApplicationFiled: June 16, 2018Publication date: January 17, 2019Inventors: Gordon Michael Coutts, Sam Padinjaremannil Alex
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Patent number: 10181880Abstract: Apparatuses, methods, and systems zone precoding are disclosed. One method includes training a transmission channel between a base station and each of a plurality of users and determining a precoding of transmission signals to each of the plurality of users from the base station. The training includes determining a transmission zone for each of the plurality of users, wherein the transmission zone includes an angle of direction of a directional beam to each user, and a deviation of the angle of direction. Determining a precoding of transmission signals to each of the plurality of users from the base station, includes determining an initial precoding for each of the users based on the transmission zone associated with the user, and constructing the precoding for each user by adjusting the initial precoding for each user based on the transmission zone determined for each of the other users.Type: GrantFiled: October 14, 2017Date of Patent: January 15, 2019Assignee: Facebook, Inc.Inventors: Ahmed Alkhateeb, Sam Padinjaremannil Alex, Ali Yazdan Panah, Qi Qu
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Publication number: 20190013845Abstract: Apparatuses, methods, and systems for MIMO inter-stream interference cancellation are disclosed. One method includes determining a channel matrix between a plurality of transmitting antennas of a transmitter and a plurality of receiving antennas of a receiver, determining a plurality of channel propagation delays based on a propagation delay between each of the plurality of transmitting antennas and each of the plurality of receiving antennas, determining differences in the plurality of channel propagation delays, preprocessing, by the transmitter, streams of symbols for each transmitting antenna for transmission based on the differences in the plurality of channel propagation delays and based on the channel matrix, and transmitting, by the transmitter, the preprocessed symbol streams through the plurality of transmitting antennas.Type: ApplicationFiled: August 23, 2018Publication date: January 10, 2019Inventors: Qi Qu, Sam Padinjaremannil Alex, Ali YAZDAN, Abhishek Tiwari, Yan Yan, Hongyu Zhou, Pratheep Bondalapati
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Publication number: 20180375550Abstract: Apparatuses, methods, and systems for simultaneous communication through multiple beams of a wireless node, are disclosed. One apparatus includes a node, that includes a beamforming network, an antenna array, and a controller. The beamforming network operatates to receive a plurality of communication signals and generate a plurality of delayed signals. The antenna array generates an antenna pattern that includes a plurality of beams, wherein the plurality of beams are divided into a plurality of groups. The controller operate to control simultaneous communication of the node with a plurality of transceivers, including the node communicating with a first transceiver through a selected beam of a first group of beams and simultaneously the node communicating with another transceiver through a corresponding beam of another group of beams.Type: ApplicationFiled: June 1, 2018Publication date: December 27, 2018Inventors: Hongyu Zhou, Qi Qu, Sam Padinjaremannil Alex
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Patent number: 10148324Abstract: Embodiments of the present disclosure support a head-mounted display (HMD) wirelessly coupled to a console. The HMD includes a positional tracking system, a beam controller and a transceiver. The positional tracking system tracks position of the HMD and generates positional information describing the tracked position of the HMD. The transceiver communicates with a console via a wireless channel, in accordance with communication instructions, the communication instructions causing the transceiver to communicate over one directional beam of a plurality of directional beams. The beam controller determines a change in the positional information. Based on the change to the positional information, the beam controller determines a directional beam of the plurality of directional beams. The beam controller further generates the communication instructions identifying the determined directional beam, and provides the communication instructions to the transceiver.Type: GrantFiled: November 20, 2017Date of Patent: December 4, 2018Assignee: Facebook Technologies, LLCInventors: Qi Qu, Ganesh Venkatraman, Hongyu Zhou, Ryan Hamilton Brown, Oskar Linde, Lyle David Bainbridge, Matthew James Devoe, Ali Yazdan, Sam Padinjaremannil Alex, Nirav Rajendra Patel
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Publication number: 20180309500Abstract: A head-mounted display (HMD) is wirelessly coupled to a console or a relay depending on the relative positions of the HMD, the console, and the relay. The HMD communicates wirelessly with the console using a beam that is oriented in a particular direction. As the position of the HMD changes, the quality of the communication link between the HMD and the console may degrade. In response to the degradation, the HMD forms a communication link with a relay, which operates as an intermediary between the HMD and the console. The relay communicates with the HMD over a dedicated communication channel that is isolated from the communication channel over which the relay communicates with the console.Type: ApplicationFiled: April 20, 2017Publication date: October 25, 2018Inventors: Qi Qu, Hongyu Zhou, Ganesh Venkatraman, Ryan Hamilton Brown, Lyle David Bainbridge, Sam Padinjaremannil Alex, Ali Yazdan, Nirav Rajendra Patel
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Patent number: 10084518Abstract: Apparatuses, methods, and systems for MIMO inter-stream interference cancellation are disclosed. One method includes determining a channel matrix between a plurality of transmitting antennas of a transmitter and a plurality of receiving antennas of a receiver, determining a plurality of channel propagation delays based on a propagation delay between each of the plurality of transmitting antennas and each of the plurality of receiving antennas, preprocessing, by the transmitter, streams of symbols for each transmitting antenna for transmission based on the plurality of channel propagation delays and based on the channel matrix, and transmitting, by the transmitter, the preprocessed symbol streams through the plurality of transmitting antennas.Type: GrantFiled: December 23, 2016Date of Patent: September 25, 2018Assignee: Facebook, Inc.Inventors: Qi Qu, Sam Padinjaremannil Alex, Ali Yazdan Panah, Abhishek Tiwari, Yan Yan, Hongyu Zhou, Pratheep Bondalapati
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Publication number: 20180234137Abstract: Embodiments of the present disclosure support a head-mounted display (HMD) wirelessly coupled to a console. The HMD includes a positional tracking system, a beam controller and a transceiver. The positional tracking system tracks position of the HMD and generates positional information describing the tracked position of the HMD. The transceiver communicates with a console via a wireless channel, in accordance with communication instructions, the communication instructions causing the transceiver to communicate over one directional beam of a plurality of directional beams. The beam controller determines a change in the positional information. Based on the change to the positional information, the beam controller determines a directional beam of the plurality of directional beams. The beam controller further generates the communication instructions identifying the determined directional beam, and provides the communication instructions to the transceiver.Type: ApplicationFiled: November 20, 2017Publication date: August 16, 2018Inventors: Qi Qu, Ganesh Venkatraman, Hongyu Zhou, Ryan Hamilton Brown, Oskar Linde, Lyle David Bainbridge, Matthew James Devoe, Ali Yazdan, Sam Padinjaremannil Alex, Nirav Rajendra Patel
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Publication number: 20180183501Abstract: Apparatuses, methods, and systems for MIMO inter-stream interference cancellation are disclosed. One method includes determining a channel matrix between a plurality of transmitting antennas of a transmitter and a plurality of receiving antennas of a receiver, determining a plurality of channel propagation delays based on a propagation delay between each of the plurality of transmitting antennas and each of the plurality of receiving antennas, preprocessing, by the transmitter, streams of symbols for each transmitting antenna for transmission based on the plurality of channel propagation delays and based on the channel matrix, and transmitting, by the transmitter, the preprocessed symbol streams through the plurality of transmitting antennas.Type: ApplicationFiled: December 23, 2016Publication date: June 28, 2018Inventors: Qi Qu, Sam Padinjaremannil Alex, Ali YAZDAN PANAH, Abhishek Tiwari, Yan Yan, Hongyu Zhou, Pratheep Bondalapati
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Publication number: 20180054251Abstract: Systems and methods for communicating in a point to multipoint (PTMP) network that includes an aerial station and a plurality of ground stations. The method includes the aerial station receiving positional information of a ground station of the plurality of the ground stations, selecting antenna elements on a phased antenna array for generating a directional beam based on the positional information, sweeping the directional beam to cover the plurality of ground stations, determining that the directional beam has a beam width sufficient to cover the plurality of ground stations and a transmit power sufficient to provide signals to the ground stations based on the sweeping of the directional beam; and establishing a radio link between the aerial station and the ground station in the plurality of ground stations.Type: ApplicationFiled: August 18, 2017Publication date: February 22, 2018Inventor: Sam Padinjaremannil Alex