Patents by Inventor Sangtae Ha

Sangtae Ha 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: 20180026899
    Abstract: Methods and apparatuses for controlling transmission control protocol (TCP) send buffers in communication systems are provided. The method includes identifying a current round-trip time (RTT) value and a minimum RTT value in the TCP and adjusting a size of the send buffer based on at least one of a current operation, the current RTT value, and the minimum RTT value in a congestion control scheme according to the TCP.
    Type: Application
    Filed: July 21, 2017
    Publication date: January 25, 2018
    Applicant: THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE
    Inventors: Jin-Sung LEE, Young-Bin IM, Sangtae HA, Sang-Jun MOON, Jung-Shin PARK, Ji-Cheol LEE, Joo-Hyung LEE
  • Patent number: 9865009
    Abstract: A system and method for delivering variable pricing of data usage to a user device operated by a user is disclosed. The system includes a server configured with a usage monitor configured to identify the user and monitor usage patterns of the user device. The server has a pricing policy engine configured to generate pricing information based on at least one of the identity of the user and the usage patterns. The pricing policy engine is configured to transmit the pricing information to the user device. The user device is configured with a usage controller having a user interface configured to receive a delay preference selection identifying at least one delay tolerant application. The usage controller is configured to receive pricing information from the pricing policy engine and to delay data usage to the delay tolerant application based on the delay preference selection and the pricing information.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: January 9, 2018
    Assignee: THE TRUSTESS OF PRINCETON UNIVERSITY
    Inventors: Mung Chiang, Sangtae Ha, Soumya Sen, Carlee Joe-Wong
  • Patent number: 9820291
    Abstract: A wireless communication system and method for use with radio access network with a plurality of client devices are disclosed. The system includes a scheduling controller including a processor configured to receive session information from the radio access network for each client device. The session information includes a utility associated with each session. The scheduling controller is configured to generate a schedule for a spectrum valley based on the session information.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: November 14, 2017
    Assignee: TUBE, INC.
    Inventors: Mung Chiang, Sangtae Ha, Carlee Joe-Wong, Shantigram Jagannath, Wim Sweldens
  • Patent number: 9794155
    Abstract: A data communication system configured to determine and coordinate loading in a mobile network with plurality of client devices. The system includes a control server coupled the client devices. The control server has a probe control function that transmits a downlink (DL) probe with an updated client probing profile to each client device. The client device has a client probing control engine that gathers network measurement information for transmission to the control server and generates uplink (UL) probes containing the network measurement information including, radio access network (RAN) metrics, DL probe measurements for transmission to the control server based on the client probing profile. The control server receives the UL probes from the client devices and determines the system load based on the measurement information, the control server updates client scheduling information based on the system load and transmits the client scheduling information to the plurality of client devices.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 17, 2017
    Assignee: TUBE INCORPORATED
    Inventors: Shantigram Jagannath, Minyan Shi, Carlee Joe-Wong, Sangtae Ha
  • Publication number: 20170048395
    Abstract: A system for time deferred usage of mobile data by a plurality of user devices each coupled to a network server and running one or more applications. The system includes a network measurement module, user profiling module and a price-optimization computational module located at the network server and a user interface module located at each user device. The network measurement module collects traffic data from each of the applications to generate the historical congestion data and current congestion data. The user profiling module is configured to receive user reaction data and determine how much mobile data for each application may be deferred to a later point in time to generate the predicted user reaction data.
    Type: Application
    Filed: October 21, 2016
    Publication date: February 16, 2017
    Applicant: The Trustees of Princeton University
    Inventors: Mung Chiang, Carlee Joe-Wong, Sangtae Ha, Soumya Sen
  • Publication number: 20160314699
    Abstract: A system and method to optimize learning efficacy and efficiency in an online course is disclosed. In particular, the methods include customizing the sequence of delivery of course content as the course is being delivered, in a way that does not necessitate upfront input from an instructor/author or anyone else, beyond what which would be provided for a standard, non-adaptive course already. The present invention is also directed to a system to implement said customization and individualization methods. The present method is further directed to a linear flow of delivered materials, but the flow is dependent upon student actions in the course, among other conditions. In the present invention, individualized adaptation is based on this input, but can be augmented with additional information provided by instructors, if desired, as well.
    Type: Application
    Filed: July 6, 2016
    Publication date: October 27, 2016
    Inventors: Christopher Greg Brinton, Weiyu Chen, Mung Chiang, Sangtae Ha, Stefan Ruediger Rill
  • Patent number: 9407508
    Abstract: A system configured to generate a utilization metric using a plurality of client devices coupled to a network server is disclosed. The system includes a channel condition monitor and a probe packet coordinator located on each client device, the channel condition monitor being configured to gather channel information, the probe packet coordinator being configured to format a packet train containing the channel information, the probe packet coordinator being configured to schedule or control the transmission timing of the packet train. The system also includes a network congestion calculator located at the network server, the network congestion calculator being configured to receive the packet train from each client device and generate a utilization metric based on the packet train received from each client device.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: August 2, 2016
    Assignee: TUBE, Inc.
    Inventors: Mung Chiang, Sangtae Ha, Carlee Joe-Wong, Harjot Singh Saluja, Shantigram Jagannath, Wim Sweldens
  • Publication number: 20160197813
    Abstract: A data communication system configured to determine and coordinate loading in a mobile network with plurality of client devices. The system includes a control server coupled the client devices. The control server has a probe control function that transmits a downlink (DL) probe with an updated client probing profile to each client device. The client device has a client probing control engine that gathers network measurement information for transmission to the control server and generates uplink (UL) probes containing the network measurement information including, radio access network (RAN) metrics, DL probe measurements for transmission to the control server based on the client probing profile. The control server receives the UL probes from the client devices and determines the system load based on the measurement information, the control server updates client scheduling information based on the system load and transmits the client scheduling information to the plurality of client devices.
    Type: Application
    Filed: December 21, 2015
    Publication date: July 7, 2016
    Inventors: Shantigram Jagannath, Minyan Shi, Carlee Joe-Wong, Sangtae Ha
  • Publication number: 20160104261
    Abstract: The present invention is directed towards systems and methods for integrating electronic learning (eLearning) platforms with Enterprise Social Networks (ESNs) in corporate learning settings.
    Type: Application
    Filed: October 6, 2015
    Publication date: April 14, 2016
    Inventors: Christopher Greg Brinton, Mung Chiang, Sangtae Ha, William D. Ju, Stefan Rudiger Rill, James Craig Walker, Weiyu Chen, Da Cao
  • Patent number: 9300589
    Abstract: In response to a detected loss of previously transmitted information by an apparatus communicating with a remote device (e.g., using TCP), the rate of transmission of information is increased by the apparatus in response to attributing the detected loss of previously transmitted information as not being caused by congestion. This attribution of the packet loss is typically determined based on roundtrip delays between sent information and received corresponding acknowledgments, which may be used directly or indirectly, such as by estimating network queuing delays based on the measured roundtrip delays.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: March 29, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Nandita Dukkipati, Sangtae Ha, Vijaynarayanan Subramanian, Flavio Giovanni Bonomi
  • Publication number: 20160063881
    Abstract: A system and method to assist an instructor in managing, understanding, and drawing conclusions about the learning behavior. The system includes methods for processing data collected about users as they interact with the various modalities of learning that may be integrated into the course, and rendering this information into visualizations that are displayed on an instructor dashboard and updated in real time.
    Type: Application
    Filed: May 14, 2015
    Publication date: March 3, 2016
    Inventors: Christopher Greg Brinton, Mung Chiang, Sangtae Ha, William D. Ju, Stefan Rudiger Rill, James Craig Walker
  • Publication number: 20160049083
    Abstract: The present invention is directed towards methods and systems to assist an author in constructing an electronic course or textbook (referred to generally as a course). The system allows an author to integrate various types of content into his/her course, and to specify a set of rules that will determine if and how the content will be individualized to each end user; the resultant courses are thus termed Integrated and Individualized Courses (IIC). Through the system, an author is able to import content files into an authoring application, and then use this application to edit the files, arrange them into segments, and define the course structure as a sequence of these segments, all through drag and drop functionality.
    Type: Application
    Filed: August 18, 2015
    Publication date: February 18, 2016
    Inventors: Christopher Greg Brinton, Mung Chiang, Sangtae Ha, William D. Ju, Stefan Rudiger Rill, James Craig Walker
  • Publication number: 20150173096
    Abstract: A wireless communication system and method for use with radio access network with a plurality of client devices are disclosed. The system includes a scheduling controller including a processor configured to receive session information from the radio access network for each client device. The session information includes a utility associated with each session. The scheduling controller is configured to generate a schedule for a spectrum valley based on the session information.
    Type: Application
    Filed: December 18, 2014
    Publication date: June 18, 2015
    Applicant: TUBE, INC.
    Inventors: Mung Chiang, Sangtae Ha, Carlee Joe-Wong, Shantigram Jagannath, Wim Sweldens
  • Publication number: 20150063152
    Abstract: A system configured to generate a utilization metric using a plurality of client devices coupled to a network server is disclosed. The system includes a channel condition monitor and a probe packet coordinator located on each client device, the channel condition monitor being configured to gather channel information, the probe packet coordinator being configured to format a packet train containing the channel information, the probe packet coordinator being configured to schedule or control the transmission timing of the packet train. The system also includes a network congestion calculator located at the network server, the network congestion calculator being configured to receive the packet train from each client device and generate a utilization metric based on the packet train received from each client device.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 5, 2015
    Applicant: TUBE, INC.
    Inventors: Mung Chiang, Sangtae Ha, Carlee Joe-Wong, Harjot Singh Saluja, Shantigram Jagannath, Wim Sweldens
  • Publication number: 20140120516
    Abstract: The present invention is directed to methods and systems that redefine how a course is taught and how material is learned in a large-scale class environment. In this system, there is adaptation of content presentation for each student, based on the tracking, learning, and profiling of student learning efficiency. Furthermore, the textbook of the present invention can be created during the delivery of course content, and sold at a variety of granularity.
    Type: Application
    Filed: October 25, 2013
    Publication date: May 1, 2014
    Inventors: Mung Chiang, Sangtae Ha, Stefan Rudiger Rill, Christopher G. Brinton, William Ju
  • Publication number: 20140112134
    Abstract: In response to a detected loss of previously transmitted information by an apparatus communicating with a remote device (e.g., using TCP), the rate of transmission of information is increased by the apparatus in response to attributing the detected loss of previously transmitted information as not being caused by congestion. This attribution of the packet loss is typically determined based on roundtrip delays between sent information and received corresponding acknowledgments, which may be used directly or indirectly, such as by estimating network queuing delays based on the measured roundtrip delays.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Applicant: Cisco Technology, Inc., a corporation of Californi
    Inventors: Nandita Dukkipati, Sangtae Ha, Vijaynarayanan Subramanian, Flavio Giovanni Bonomi
  • Patent number: 8625622
    Abstract: In response to a detected loss of previously transmitted information by an apparatus communicating with a remote device (e.g., using TCP), the rate of transmission of information is increased by the apparatus in response to attributing the detected loss of previously transmitted information as not being caused by congestion. This attribution of the packet loss is typically determined based on roundtrip delays between sent information and received corresponding acknowledgments, which may be used directly or indirectly, such as by estimating network queuing delays based on the measured roundtrip delays.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: January 7, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Nandita Dukkipati, Sangtae Ha, Vijaynarayanan Subramanian, Flavio Giovanni Bonomi
  • Publication number: 20140006237
    Abstract: A system and method for delivering variable pricing of data usage to a user device operated by a user is disclosed. The system includes a server configured with a usage monitor configured to identify the user and monitor usage patterns of the user device. The server has a pricing policy engine configured to generate pricing information based on at least one of the identity of the user and the usage patterns. The pricing policy engine is configured to transmit the pricing information to the user device. The user device is configured with a usage controller having a user interface configured to receive a delay preference selection identifying at least one delay tolerant application. The usage controller is configured to receive pricing information from the pricing policy engine and to delay data usage to the delay tolerant application based on the delay preference selection and the pricing information.
    Type: Application
    Filed: June 12, 2013
    Publication date: January 2, 2014
    Inventors: Mung Chiang, Sangtae Ha, Soumya Sen, Carlee Joe-Wong
  • Publication number: 20110158253
    Abstract: In response to a detected loss of previously transmitted information by an apparatus communicating with a remote device (e.g., using TCP), the rate of transmission of information is increased by the apparatus in response to attributing the detected loss of previously transmitted information as not being caused by congestion. This attribution of the packet loss is typically determined based on roundtrip delays between sent information and received corresponding acknowledgments, which may be used directly or indirectly, such as by estimating network queuing delays based on the measured roundtrip delays.
    Type: Application
    Filed: December 25, 2009
    Publication date: June 30, 2011
    Applicant: Cisco Technology, Inc., a corporation of California
    Inventors: Nandita Dukkipati, Sangtae Ha, Vijaynarayanan Subramanian, Flavio Giovanni Bonomi