Patents by Inventor Moorthy Hariharan

Moorthy Hariharan 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: 8477802
    Abstract: A slotted Aloha communication system is provided according to one embodiment of the invention. The system may include a hub and a plurality of RCSTs. According to one embodiment, congestion control may occur at the RCST based in part on the number of segments received at the hub, the number of retransmission segments received at the hub and the number of successful collision retransmission segments received at the hub. The hub may communicate information regarding received segments. Congestion control may include calculating a transmission probably, performing a skewed probability measure with a probability equal to the transmission probability. If the results of the probability measure is positive the RCST may transmit or retransmit a segment within a first time prior, if the probability measure is negative then the RCST waits a set time period and reperforms the skewed probability measure.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: July 2, 2013
    Assignee: ViaSat, Inc.
    Inventors: Tom Inukai, Karim Zamani, Moorthy Hariharan
  • Patent number: 8159964
    Abstract: Satellite communications systems, methods, and related devices are described. A satellite communications system may include routing and switching functionality onboard the satellite. Such a system may include a satellite in communication with terminals (e.g., subscriber terminals or gateways) either directly, or via one or more other satellites through an inter-satellite link. The satellite may be configured with different beams which each provide service to a coverage area. A ground-based network control center (NCC) may dynamically allocate bandwidth and process data measured on the satellite. A novel partition of functionality between the satellite and the NCC is described. Routing paths on the satellite, and the distribution of routing tables within the system, are described as well.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: April 17, 2012
    Assignee: ViaSat, Inc.
    Inventors: Anil Agarwal, Moorthy Hariharan
  • Patent number: 8159992
    Abstract: Satellite communications systems, methods, and related devices are described. A satellite communications system may include routing and switching functionality onboard the satellite. Such a system may include a satellite in communication with terminals (e.g., subscriber terminals or gateways) either directly, or via one or more other satellites through an inter-satellite link. The satellite may be configured with different beams which each provide service to a coverage area. A ground-based network control center (NCC) may dynamically allocate bandwidth and process data measured on the satellite. A novel partition of functionality between the satellite and the NCC is described. Routing paths on the satellite, and the distribution of routing tables within the system, are described as well.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: April 17, 2012
    Assignee: ViaSat, Inc.
    Inventors: Anil Agarwal, Moorthy Hariharan
  • Publication number: 20110164499
    Abstract: A slotted Aloha communication system is provided according to one embodiment of the invention. The system may include a hub and a plurality of RCSTs. According to one embodiment, congestion control may occur at the RCST based in part on the number of segments received at the hub, the number of retransmission segments received at the hub and the number of successful collision retransmission segments received at the hub. The hub may communicate information regarding received segments. Congestion control may include calculating a transmission probably, performing a skewed probability measure with a probability equal to the transmission probability. If the results of the probability measure is positive the RCST may transmit or retransmit a segment within a first time prior, if the probability measure is negative then the RCST waits a set time period and reperforms the skewed probability measure.
    Type: Application
    Filed: July 6, 2010
    Publication date: July 7, 2011
    Applicant: ViaSat, Inc.
    Inventors: Tom Inukai, Karim Zamani, Moorthy Hariharan
  • Patent number: 7773576
    Abstract: A slotted Aloha communication system is provided according to one embodiment of the invention. The system may include a hub and a plurality of RCSTs. According to one embodiment, congestion control may occur at the RCST based in part on the number of segments received at the hub, the number of retransmission segments received at the hub and the number of successful collision retransmission segments received at the hub. The hub may communicate information regarding received segments. Congestion control may include calculating a transmission probably, performing a skewed probability measure with a probability equal to the transmission probability. If the results of the probability measure is positive the RCST may transmit or retransmit a segment within a first time prior, if the probability measure is negative then the RCST waits a set time period and reperforms the skewed probability measure.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: August 10, 2010
    Assignee: ViaSat, Inc.
    Inventors: Tom Inukai, Karim Zamani, Moorthy Hariharan
  • Publication number: 20080219206
    Abstract: Satellite communications systems, methods, and related devices are described. A satellite communications system may include routing and switching functionality onboard the satellite. Such a system may include a satellite in communication with terminals (e.g., subscriber terminals or gateways) either directly, or via one or more other satellites through an inter-satellite link. The satellite may be configured with different beams which each provide service to a coverage area. A ground-based network control center (NCC) may dynamically allocate bandwidth and process data measured on the satellite. A novel partition of functionality between the satellite and the NCC is described. Routing paths on the satellite, and the distribution of routing tables within the system, are described as well.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 11, 2008
    Applicant: ViaSat, Inc.
    Inventors: Anil Agarwal, Moorthy Hariharan
  • Publication number: 20080219266
    Abstract: Satellite communications systems, methods, and related devices are described. A satellite communications system may include routing and switching functionality onboard the satellite. Such a system may include a satellite in communication with terminals (e.g., subscriber terminals or gateways) either directly, or via one or more other satellites through an inter-satellite link. The satellite may be configured with different beams which each provide service to a coverage area. A ground-based network control center (NCC) may dynamically allocate bandwidth and process data measured on the satellite. A novel partition of functionality between the satellite and the NCC is described. Routing paths on the satellite, and the distribution of routing tables within the system, are described as well.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 11, 2008
    Applicant: ViaSat, Inc.
    Inventors: Anil Agarwal, Moorthy Hariharan
  • Publication number: 20080220771
    Abstract: Satellite communications systems, methods, and related devices are described. A satellite communications system may include routing and switching functionality onboard the satellite. Such a system may include a satellite in communication with terminals (e.g., subscriber terminals or gateways) either directly, or via one or more other satellites through an inter-satellite link. The satellite may be configured with different beams which each provide service to a coverage area. A ground-based network control center (NCC) may dynamically allocate bandwidth and process data measured on the satellite. A novel partition of functionality between the satellite and the NCC is described. Routing paths on the satellite, and the distribution of routing tables within the system, are described as well.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 11, 2008
    Applicant: ViaSat, Inc.
    Inventors: Anil Agarwal, Moorthy Hariharan
  • Publication number: 20080205276
    Abstract: A slotted Aloha communication system is provided according to one embodiment of the invention. The system may include a hub and a plurality of RCSTs. According to one embodiment, congestion control may occur at the RCST based in part on the number of segments received at the hub, the number of retransmission segments received at the hub and the number of successful collision retransmission segments received at the hub. The hub may communicate information regarding received segments. Congestion control may include calculating a transmission probably, performing a skewed probability measure with a probability equal to the transmission probability. If the results of the probability measure is positive the RCST may transmit or retransmit a segment within a first time prior, if the probability measure is negative then the RCST waits a set time period and reperforms the skewed probability measure.
    Type: Application
    Filed: February 26, 2008
    Publication date: August 28, 2008
    Applicant: ViaSat, Inc.
    Inventors: Tom Inukai, Karim Zamani, Moorthy Hariharan