Patents by Inventor Chen-Yui Yang

Chen-Yui Yang 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: 8995415
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a device having a processor operable to receive an identifier from a wireless device of a user, to determine information of a femtocell, and to provide the femtocell information to the wireless device. The processor is also operable to determine location data of the femtocell and to identify according to the gateway identifier a subscriber account to verify availability of service for the femtocell. The femtocell is authenticated according to the location data and the femtocell identifier. Other embodiments are disclosed.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: March 31, 2015
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Chen-Yui Yang, Paritosh Bajpay, David H. Lu, Balaji R. Puli, Anthony M. Srdar, Xidong Wu
  • Patent number: 8989015
    Abstract: A method and apparatus for addressing a congestion condition in a communication network are disclosed. For example, the method receives an alert for at least one of: a trunk or a Permanent Virtual Circuit (PVC), where the trunk or the PVC is associated with a route. The method determines whether the alert is associated with a congestion condition by determining whether a trunk utilization has exceeded a first predetermined threshold for the trunk or for the at least one trunk supporting the PVC. The method then rebuilds the route if the first predetermined threshold is exceeded for the trunk or for the at least one trunk supporting said PVC.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 24, 2015
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Paritosh Bajpay, Chuan-Chuen Chang, Monowar Hossain, Mark Hunt, Thiru Ilango, Michael R. Lambert, David H. Lu, Chen-Yui Yang
  • Patent number: 8953443
    Abstract: A method and apparatus for providing a congestion management of a wireless communication network are disclosed. For example, the method projects dynamically a trend for a network element of the wireless communication network, using a functionality metric associated with the network element of the wireless communication network, and determines if there is a potential congestion in accordance with the trend. The method then provides a notification of the potential congestion, if there is a potential congestion for the network element of the wireless communication network.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: February 10, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Huang Lee, Raghvendra Savoor
  • Patent number: 8948021
    Abstract: Example methods and apparatus to monitor border gateway protocol sessions are disclosed. A disclosed example method includes detecting a failure of a first BGP session, initiating a sustained-down timer and a reset-timer in response to detecting the failure, identifying a sustained-down condition in response to the sustained-down timer exceeding a first time threshold, identifying a flapping condition in response to counting a threshold number of BGP failures and corresponding BGP re-establishments during a second time threshold of the reset-timer, and identifying a continuous flapping condition in response to detecting the flapping condition consecutively for a threshold number of instances.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: February 3, 2015
    Assignee: AT&T Intellectual Property I., L.P.
    Inventors: Chen-Yui Yang, Paritosh Bajpay, Wen-Jui Li, Peter Wanda, Ken Yeh, Carolyn V. Bekampis
  • Patent number: 8938749
    Abstract: A computer-implemented method includes receiving, at a monitoring center of a media distribution network, from a set top box device associated with a customer account, first error data indicating occurrence of a first error at the set top box device at a first time. The set top box device is at least partially functional after occurrence of the first error. The computer-implemented method includes receiving, at the monitoring center, second error data indicating occurrence of a second error at the set top box device at a second time. The set top box device is at least partially functional after occurrence of the second error. The computer-implemented method includes determining an elapsed time between the first time and the second time. The computer-implemented method includes automatically generating a trouble ticket indicating failure of the set top box device when the elapsed time satisfies a first threshold.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: January 20, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Paritosh Bajpay, Zhi Li, David Lu, Balaji Puli, Raghvendra Savoor, Anthony Srdar
  • Patent number: 8908505
    Abstract: Example methods, apparatus and articles of manufacture to monitor communication paths in communication systems are disclosed. An example method includes identifying links of a communication system, the links communicatively coupling router pairs, identifying communication paths in the communication system, each of the communication paths being routed via one or more of the links, testing the links during a first interval by testing at least a first portion of the communication paths, testing the links during the second interval by testing at least a second portion of the communication paths, changing the first portion of the communication paths to include at least one of the communication paths from the second portion of the communication paths such that testing the first portion of the communication paths and testing the second portion of the communication paths collectively test each of the links, and identifying a link failure based on the testing.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: December 9, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Zhijian Xu, Chee Ching, Kevin D'Souza, Joseph Lu, David H. Lu, Chen-Yui Yang, Leah Li Zhang
  • Patent number: 8902761
    Abstract: A method and apparatus providing a network topology management of a wireless communication network are disclosed. The method discovers network topology data of the wireless communication network, wherein the wireless communication network comprises a self-healing capability, and identifies a difference between the network topology data that is discovered against a stored network topology data of the wireless communication network. The method updates the stored network topology data with the difference that is identified.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: December 2, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Wen-Jui Li, Minghsien Wang, Quangchung Yeh
  • Patent number: 8811148
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a set-top box (STB) having a controller to generate a trouble report indicating a malfunction with one or more services, and submitting the trouble report to a mitigation system. The mitigation system can be adapted to detect one or more operational faults in at least one of a Digital Subscriber Line Access Multiplexer (DSLAM), a residential gateway (RG), and the STB, cycle operations of at least one of the DSLAM, the RG, and the STB responsive to detecting an undesirable state of operation of at least one of the DSLAM, the RG, and the STB, and generate a trouble ticket directed to a service agent responsive to detecting that at least one of the DSLAM, the RG and the STB continues to exhibit at least one operational fault. Other embodiments are disclosed.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: August 19, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Michele Macauda, Paritosh Bajpay
  • Publication number: 20140187206
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a device having a processor operable to receive an identifier from a wireless device of a user, to determine information of a femtocell, and to provide the femtocell information to the wireless device. The processor is also operable to determine location data of the femtocell and to identify according to the gateway identifier a subscriber account to verify availability of service for the femtocell. The femtocell is authenticated according to the location data and the femtocell identifier. Other embodiments are disclosed.
    Type: Application
    Filed: March 5, 2014
    Publication date: July 3, 2014
    Applicant: AT&T Intellectual Property I, LP
    Inventors: Chen-Yui Yang, Paritosh Bajpay, David H. Lu, Balaji R. Puli, Anthony M. Srdar, Xidong Wu
  • Patent number: 8768339
    Abstract: A method and apparatus for enabling a wireless communication service provider to remotely provide wireless network service outage and/or degradation detection, isolation, and restoration relating to a base station are disclosed. For example, the method detects a wireless service problem, and isolates the wireless service problem to a base station of a plurality of base stations of the wireless communication network, wherein the wireless service problem comprises a wireless service degradation. The method then performs a recovery task remotely on the base station to address the wireless service degradation.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 1, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Paritosh Bajpay, David H. Lu, Anthony Mark Srdar, Fang Wu, Minghsien Wang, Quangchung Yeh
  • Patent number: 8717869
    Abstract: Methods and apparatus to detect and restore flapping circuits in IP aggregation network environments are disclosed herein. An example method for use in maintaining a communication network includes retrieving information related to an operating state of a device associated with a network disturbance; determining whether the information related to the operating state of the device is indicative of a flapping condition; when the operating state information indicates that the flapping condition is present in the network, determining a cause of the flapping condition; when the cause of the flapping condition is a physical cause, selecting a first recovery procedure; and when the cause of the flapping condition is a logical cause, selecting a second recovery procedure different from the first recovery procedure.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: May 6, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Paritosh Bajpay, Robert Ferro, Luis Figueroa, Monowar Hossain, Thiru Ilango, David Lu
  • Patent number: 8705503
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a femtocell having a controller operable to establish communications with a gateway and transmit authentication information to the gateway. The gateway transmits the authentication information and a gateway identifier to a remote server to authenticate the femtocell. The controller is also operable to detect enablement of services responsive to the remote server identifying a subscriber account according to the gateway identifier, and the remote server authenticating the femtocell by comparing the authentication information to information retrieved from the subscriber account. Other embodiments are disclosed.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: April 22, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Paritosh Bajpay, David H. Lu, Balaji R. Puli, Anthony M. Srdar, Xidong Wu
  • Patent number: 8700761
    Abstract: A method and system of managing network alarms including associating an alarm type with a plurality of network alarms using information associated with the plurality of network alarms, the information comprising a quantity of the plurality of network alarms and a cause of the network alarms; and processing the plurality of network alarms based on the alarm type associated therewith.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: April 15, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paritosh Bajpay, Monowar Hossain, Wen-Jui Li, Chao-Chun Luo, Chen-Yui Yang, Daniel Zuckerman
  • Patent number: 8660026
    Abstract: A method, computer readable medium and apparatus for performing mapping management are disclosed. For example, the method monitors network performance measurements of long term evolution mobility elements, monitors a class type and a bandwidth type of long term evolution interfaces, determines if an impairment state is detected based upon the monitoring network performance measurements and the monitoring the class type and the bandwidth type, determines if the impairment state is due to a class of service and a quality of service mismatch and reconfigures the quality of service if the impairment state is due to the class of service and the quality of service mismatch.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: February 25, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Paritosh Bajpay, David H. Lu, Anthony Mark Srdar, Fang Wu
  • Publication number: 20130294258
    Abstract: Example methods, apparatus and articles of manufacture to monitor communication paths in communication systems are disclosed. An example method includes identifying links of a communication system, the links communicatively coupling router pairs, identifying communication paths in the communication system, each of the communication paths being routed via one or more of the links, testing the links during a first interval by testing at least a first portion of the communication paths, testing the links during the second interval by testing at least a second portion of the communication paths, changing the first portion of the communication paths to include at least one of the communication paths from the second portion of the communication paths such that testing the first portion of the communication paths and testing the second portion of the communication paths collectively test each of the links, and identifying a link failure based on the testing.
    Type: Application
    Filed: July 11, 2013
    Publication date: November 7, 2013
    Inventors: Zhijian Xu, Chee Ching, Kevin D'Souza, Joseph Lu, David H. Lu, Chen-Yui Yang, Leah Li Zhang
  • Patent number: 8549358
    Abstract: A method, computer readable medium and apparatus for performing session establishment management. For example, the method detects an evolved packet system establishment success rate that is measured over a predefined period of time falling below a predefined threshold, and performs, via a rule management server, an analysis on a bearer portion. The method then associates, via the rule management server, a root cause that contributed to the evolved packet system establishment success rate falling below the predefined threshold.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: October 1, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Paritosh Bajpay, David H. Lu, Anthony Mark Srdar, Fang Wu
  • Patent number: 8498203
    Abstract: Example methods, apparatus and articles of manufacture to monitor communication paths in communication systems are disclosed. An example method includes identifying links of a communication system, the links communicatively coupling routers, identifying communication paths in the communication system, each of the communication paths being routed via one or more of the links, testing the links during a first interval by testing at least a first portion of the communication paths, testing the links during the second interval by testing at least a second portion of the communication paths, changing the first portion of the communication paths to include at least one of the communication paths from the second portion of the communication paths such that testing the first portion of the communication paths and testing the second portion of the communication paths collectively test each of the links, and identifying a link failure based on the testing.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: July 30, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Zhijian Xu, Chee Ching, Kevin D'Souza, Joseph Lu, David H. Lu, Chen-Yui Yang, Leah Li Zhang
  • Patent number: 8416700
    Abstract: A method of diagnosing a transmission loop in an Internet protocol television (IPTV) network includes configuring the loop as an open loop and performing a single-ended loop test (SELT), configuring the loop as a terminated-loop and performing another SELT, subtracting a trace of the first SELT from a trace of the second SELT, and determining the length of the loop from the result. A service assurance system in an IPTV network includes a test module and a DSLAM coupled to a residential gateway by a transmission loop. The test module operates to determine that a fault condition on the IPTV network is caused by a fault in the loop, direct the DSLAM to perform an open loop SELT and a terminated-loop SELT on the loop, receive the results of the SELTs, and determine a location of a tap on the loop based upon the results.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: April 9, 2013
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Chen-Yui Yang, Paritosh Bajpay, David H. Lu, Raghvendra Savoor, Anthony M. Srdar, Jin Wang, Xidong Wu, Xiaochuan Yi
  • Publication number: 20120320785
    Abstract: A method and apparatus for addressing a congestion condition in a communication network are disclosed. For example, the method receives an alert for at least one of: a trunk or a Permanent Virtual Circuit (PVC), where the trunk or the PVC is associated with a route. The method determines whether the alert is associated with a congestion condition by determining whether a trunk utilization has exceeded a first predetermined threshold for the trunk or for the at least one trunk supporting the PVC. The method then rebuilds the route if the first predetermined threshold is exceeded for the trunk or for the at least one trunk supporting said PVC.
    Type: Application
    Filed: August 27, 2012
    Publication date: December 20, 2012
    Applicant: AT&T Corp.
    Inventors: Paritosh Bajpay, Chuan-Chuen Chang, Monowar Hossain, Mark Hunt, Thiru Ilango, Michael R. Lambert, David H. Lu, Chen-Yui Yang
  • Publication number: 20120307631
    Abstract: A method and apparatus for providing a congestion management of a wireless communication network are disclosed. For example, the method projects dynamically a trend for a network element of the wireless communication network, using a functionality metric associated with the network element of the wireless communication network, and determines if there is a potential congestion in accordance with the trend. The method then provides a notification of the potential congestion, if there is a potential congestion for the network element of the wireless communication network.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 6, 2012
    Inventors: CHEN-YUI YANG, HUANG LEE, RAGHVENDRA SAVOOR