Patents by Inventor Lusheng Ji

Lusheng Ji 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: 9462948
    Abstract: The subject disclosure provides a system and method for a set-top box for monitoring telehealth and biometric sensors. A subject patient is associated with telehealth and biometric sensors which measure the subject patient's vital signs and other health related attributes. In one aspect, the system includes a set-top box for continuously gathering biometric and telehealth sensor data. The set-top box includes a sensor interface for interfacing with the sensors and supports wireless and wired connections to the sensors. The system additionally may include a system management station for providing feedback to the subject patient.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 11, 2016
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Lusheng Ji, Robert R. Miller, II
  • Patent number: 9450973
    Abstract: A method, non-transitory computer readable medium and apparatus for providing network security monitoring in a communications network are disclosed. For example, the method receives communications traffic associated with a sensor network from a sensor that is a member of the sensor network, analyzes the communications traffic to determine if an attack is occurring on the sensor network, and generates an alarm if the attack is occurring on the sensor network.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: September 20, 2016
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Daniel Sheleheda, Donald J. Bowen, Cynthia Cama, Lusheng Ji
  • Patent number: 9445769
    Abstract: A method, computer-readable storage device and apparatus for determining a regression of a medical condition are disclosed. For example, a method receives characteristics of motion information, wherein the characteristics of motion information is based upon gait information, compares the characteristics of motion information over a time period to a profile of the medical condition, wherein the profile of the medical condition comprises a plurality of signatures associated with different stages of the medical condition, determines a potential presence of the regression of the medical condition when the characteristics of motion information matches one of the plurality of signatures, and transmits a notification of the potential presence of the regression of the medical condition.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: September 20, 2016
    Assignees: President and Fellows of Harvard College, AT&T Intellectual Property I, L.P.
    Inventors: Saeed S. Ghassemzadeh, Lusheng Ji, Robert Raymond Miller, II, Manish Gupta, Vahid Tarokh
  • Patent number: 9443063
    Abstract: A method, computer-readable storage device and apparatus for calculating a health quality measure are disclosed. For example, a method receives characteristics of motion information, wherein the characteristics of motion information is based upon gait information, monitors the characteristics of motion information over a time period to determine a plurality of different modes of motion within the time period, and calculates the health quality measure based upon the plurality of different modes of motion.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: September 13, 2016
    Assignees: President and Fellows of Harvard College, AT&T Intellectual Property I, L.P.
    Inventors: Saeed S. Ghassemzadeh, Lusheng Ji, Robert Raymond Miller, II, Manish Gupta, Vahid Tarokh
  • Publication number: 20160253988
    Abstract: A system for self-organized acoustic signal cancellation over a network is disclosed. The system may transmit an acoustic sounding signal to an interfering device so that a channel measurement may be performed for a channel between the interfering device and an interferee device. The system may receive the channel measurement for the channel from the interfering device and also receive a digitized version of an audio interference signal associated with the interfering device. Based on the channel measurement and the digital version of the interference signal, the system may calculate a cancellation signal prior to the arrival of the original over-the-air audio interference signal that corresponds to the digital version of audio interference signal. The system may then apply the cancellation signal to an audio signal associated with the interferee device to remove the interference signal from the audio signal.
    Type: Application
    Filed: May 9, 2016
    Publication date: September 1, 2016
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Lusheng Ji, Donald J. Bowen, Dimitrios B. Dimitriadis, Horst J. Schroeter
  • Patent number: 9432876
    Abstract: A system and method are disclosed for forwarding data in hybrid wireless mesh networks. The method includes configuring a number of mesh network nodes as potential relay nodes (PRNs) in an overlay network associated with a hybrid wireless mesh network, streaming data packets from a source node to a destination node using a native data forwarding algorithm of the hybrid wireless mesh network, dynamically identifying relay nodes (RNs) among PRNs in the overlay network, creating secondary paths for sending data packets towards selected RNs in the overlay network, and relaying data packets from RNs to the destination node using the overlay network.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: August 30, 2016
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Lusheng Ji, David M. Britz
  • Patent number: 9418342
    Abstract: A method, computer-readable storage device and apparatus for determining a mode of motion are disclosed. For example, a method receives training data comprising gait information associated with a plurality of different modes of motion. The method performs principal component analysis on the training data to extract principal components from the training data and generates a hidden markov model for each of a plurality of different modes of motion based upon the training data. The method receives testing data comprising gait information, transforms the testing data based upon the principal components and calculates a likelihood of the testing data based upon each hidden markov model for each of the plurality of different modes of motion. The method determines the mode of motion of the testing data, where the mode of motion is one of the plurality of different modes of motion for which a highest likelihood is calculated.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: August 16, 2016
    Assignees: AT&T Intellectual Property I, L.P., President and Fellows of Harvard College
    Inventors: Saeed S. Ghassemzadeh, Lusheng Ji, Robert Raymond Miller, II, Manish Gupta, Vahid Tarokh
  • Publication number: 20160234753
    Abstract: Data is routed in a mesh network of devices that can communicate wirelessly through a plurality of technologies. One or more of such devices receive broadcast message(s) from a destination device intended to receive the data, and generate a first radio link quality metric (RLQM) value based on the broadcast message(s). A source device originates and delivers a quantum of data with an embedded first RLQM value. A set of intermediate devices relays the quantum of data if a forwarding criterion is fulfilled; the forwarding criterion is based in part on the first RLQM value and a second RLQM value generated by an intermediate device in the set of intermediate devices based on the broadcast message(s). The intermediate device exploits an optical interface to transmit the quantum of data. The destination device broadcasts an acknowledgement signal in response to receiving intended data.
    Type: Application
    Filed: April 19, 2016
    Publication date: August 11, 2016
    Inventors: Lusheng Ji, Chonggang Wang, Ting Wang
  • Patent number: 9378753
    Abstract: A system for self-organized acoustic signal cancellation over a network is disclosed. The system may transmit an acoustic sounding signal to an interfering device so that a channel measurement may be performed for a channel between the interfering device and an interferee device. The system may receive the channel measurement for the channel from the interfering device and also receive a digitized version of an audio interference signal associated with the interfering device. Based on the channel measurement and the digital version of the interference signal, the system may calculate a cancellation signal prior to the arrival of the original over-the-air audio interference signal that corresponds to the digital version of audio interference signal. The system may then apply the cancellation signal to an audio signal associated with the interferee device to remove the interference signal from the audio signal.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: June 28, 2016
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P
    Inventors: Lusheng Ji, Donald J. Bowen, Dimitrios B. Dimitriadis, Horst J. Schroeter
  • Patent number: 9357921
    Abstract: Devices, systems and methods are disclosed which relate to remotely monitoring the health of an individual. The individual wears a health monitoring device, with an attached strap, capable of sensing characteristics of the individual. These characteristics may include voice level and tone, movements, blood pressure, temperature, etc. The device allows individuals to constantly monitor their health without having to physically visit a doctor or other health care professional. Wireless communication, for instance with an Internet Protocol Television (IPTV) set-top box, allows measurements to be made and evaluated by a ‘computerized’ healthcare service provider. For a more accurate evaluation, measurements are sent over the INTERNET to a service. The device communicates with services in order to diagnose the individual based upon the characteristics.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: June 7, 2016
    Assignee: AT&T INTELLECTUAL PROPERTY I, LP
    Inventors: Hisao M. Chang, Lusheng Ji, Bernard S. Renger
  • Publication number: 20160142971
    Abstract: Improved non-cellular (e.g., Wi-Fi) link integration with a cellular (e.g., LTE) network is described. The improved link integration can relate to utilizing an eNodeB device (e.g., residing in a radio access network portion of a cellular network) as an anchor point rather than a packet data network gateway device (e.g., residing in a core network portion of the cellular network) utilized by other approaches. The improved link integration can maintain full compliance with or support for other approaches, and can reduce signaling overhead, simplify quality-of-service management, and/or provide a more rapid reaction to changes of access, particularly in cases where the eNodeB device and a non-cellular access point device are co-located.
    Type: Application
    Filed: January 25, 2016
    Publication date: May 19, 2016
    Inventors: LUSHENG JI, ROBERT RAYMOND MILLER, II, BO HAN
  • Publication number: 20160140948
    Abstract: A pre-distortion system for improved mobile device communications via cancellation of nonlinear distortion is disclosed. The pre-distortion system may transmit an acoustic signal from a network to a device, wherein the acoustic signal includes a linear signal and a nonlinear cancellation signal that cancels at least a portion of nonlinear distortions created once a loudspeaker in the device emits the linear signal. Thus, when a loudspeaker of a mobile device is operating and nonlinear distortions are generated by the loudspeaker or adjacent components of the mobile device in close proximity to the loudspeaker, the pre-distortion system may create one or more nonlinear cancellation signals in the network. The nonlinear cancellation signal may be combined with the linear signal sent to the loudspeaker to cancel the nonlinear distortion signal created by the loudspeaker emitting acoustic sounds from the linear signal. Thus, the nonlinear cancellation signal becomes a pre-distortion signal.
    Type: Application
    Filed: November 17, 2014
    Publication date: May 19, 2016
    Inventors: Horst J. Schroeter, Donald J. Bowen, Dimitrios Dimitriadis, Lusheng Ji
  • Patent number: 9344950
    Abstract: Data is routed in a mesh network of devices that can communicate wirelessly through a plurality of technologies. One or more of such devices receive broadcast message(s) from a destination device intended to receive the data, and generate a first radio link quality metric (RLQM) value based on the broadcast message(s). A source device originates and delivers a quantum of data with an embedded first RLQM value. A set of intermediate devices relays the quantum of data if a forwarding criterion is fulfilled; the forwarding criterion is based in part on the first RLQM value and a second RLQM value generated by an intermediate device in the set of intermediate devices based on the broadcast message(s). The intermediate device exploits an optical interface to transmit the quantum of data. The destination device broadcasts an acknowledgement signal in response to receiving intended data.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: May 17, 2016
    Assignees: AT&T Intellectual Property I, L.P., NEC Laboratories America, Inc.
    Inventors: Lusheng Ji, Chonggang Wang, Ting Wang
  • Patent number: 9338177
    Abstract: A method of placing prefix hijacking detection modules in a communications network includes selecting a set of candidate locations. For each candidate location, a detection coverage ratio with respect to a target Autonomous System is calculated. Based on the relative size of the coverage ratios, proposed locations for the prefix hijacking detection modules are determined.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: May 10, 2016
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Lusheng Ji, Dan Pei, Tongquing Qiu, Jia Wang
  • Publication number: 20160125876
    Abstract: A system for providing an acoustic environment recognizer for optimal speech processing is disclosed. In particular, the system may utilize metadata obtained from various acoustic environments to assist in suppressing ambient noise interfering with a desired audio signal. In order to do so, the system may receive an audio stream including an audio signal associated with a user and including ambient noise obtained from an acoustic environment of the user. The system may obtain first metadata associated with the ambient noise, and may determine if the first metadata corresponds to second metadata in a profile for the acoustic environment. If the first metadata corresponds to the second metadata, the system may select a processing scheme for suppressing the ambient noise from the audio stream, and process the audio stream using the processing scheme. Once the audio stream is processed, the system may provide the audio stream to a destination.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 5, 2016
    Inventors: Horst J. Schroeter, Donald J. Bowen, Dimitrios B. Dimitriadis, Lusheng Ji
  • Publication number: 20160125894
    Abstract: A system for self-organized acoustic signal cancellation over a network is disclosed. The system may transmit an acoustic sounding signal to an interfering device so that a channel measurement may be performed for a channel between the interfering device and an interferee device. The system may receive the channel measurement for the channel from the interfering device and also receive a digitized version of an audio interference signal associated with the interfering device. Based on the channel measurement and the digital version of the interference signal, the system may calculate a cancellation signal prior to the arrival of the original over-the-air audio interference signal that corresponds to the digital version of audio interference signal. The system may then apply the cancellation signal to an audio signal associated with the interferee device to remove the interference signal from the audio signal.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 5, 2016
    Inventors: Lusheng Ji, Donald J. Bowen, Dimitrios B. Dimitriadis, Horst J. Schroeter
  • Publication number: 20160125892
    Abstract: A system for cloud acoustic enhancement is disclosed. In particular, the system may leverage metadata and cloud-computing network resources to mitigate the impact of noisy environments that may potentially interfere with user communications. In order to do so, the system may receive an audio stream including an audio signal associated with a user, and determine if the audio stream also includes an interference signal. The system may determine that the audio stream includes the interference signal if a portion of the audio stream correlates with metadata that identifies the interference signal. If the audio stream is determined to include the interference signal, the system may cancel the interference signal from the audio stream by utilizing the metadata and the cloud-computing network resources. Once the interference signal is cancelled, the system may transmit the audio stream including the audio signal associated with the user to an intended destination.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 5, 2016
    Inventors: Donald J. Bowen, Dimitrios B. Dimitriadis, Lusheng Ji, Horst J. Schroeter
  • Publication number: 20160127861
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a coordinator device having a memory, and a controller. The memory can have computer instructions, which when executed by the controller, causes the controller to facilitate establishing a first virtual personal area network with a first sensor by executing computer instructions associated with a first application profile, and facilitate establishing a second virtual personal area network with a second sensor by executing computer instructions associated a second application profile. The first application profile can be defined by a first protocol specification, while the second application profile can be defined by a second protocol specification. The first protocol specification can also be operationally distinct from the second protocol specification. Other embodiments are disclosed.
    Type: Application
    Filed: January 11, 2016
    Publication date: May 5, 2016
    Inventors: LUSHENG JI, ROBERT RAYMOND MILLER, II, JIA WANG
  • Publication number: 20160088656
    Abstract: A method includes transmitting a first message during a first time interval of a frame from a device. Transmission of the first message is followed by a second time interval of the frame. The method further includes transmitting a second message during the second time interval. The second message is followed by a third time interval that is shorter than the second time interval. The third time interval includes a contention-free period, a contention period, or a combination thereof.
    Type: Application
    Filed: December 4, 2015
    Publication date: March 24, 2016
    Inventors: Lusheng Ji, Robert Miller, Harry Worstell
  • Publication number: 20160081102
    Abstract: Intra-cell upstream data forwarding can be utilized in a wireless network such as a wireless local area network. A network forwarding path can be determined based on the signal strength of an access point signal received at client stations within the network, referred to as the observed access point signal strength (OASS). In particular embodiments, a station that is either originating or forwarding a frame can insert its own OASS into the frame before transmitting it and a client station that receives a frame can forward it only if its own OASS exceeds the frame-enclosed OASS, by at least a predetermined amount.
    Type: Application
    Filed: November 23, 2015
    Publication date: March 17, 2016
    Inventor: Lusheng Ji