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).

  • Methods, systems, and products for measuring health
    Patent number: 8666768
    Abstract: Methods, systems, and products measure health data related to a user. A time-stamped device identifier is received that uniquely identifies a communications device. A time-stamped sensor measurement is separately-received. A difference in time between the time-stamped device identifier and the time-stamped sensor measurement is determined. When the difference in time is within a window of time, then the sensor measurement is associated with the device identifier.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: March 4, 2014
    Assignee: AT&T Intellectual Property I, L. P.
    Inventors: Lusheng Ji, Robert R. Miller, II, Harry R. Worstell
  • Methods, Systems, and Products for Measuring Health
    Publication number: 20140058745
    Abstract: Methods, systems, and products measure health data related to a user. Often times a weight scale, blood pressure monitor, or other medical measurement device is shared among a group of users. A time-stamped physiological measurement is compared to a time-stamped message from a mobile device. If the timestamps are contemporaneous, then the physiological measurement is bound to the mobile device.
    Type: Application
    Filed: October 30, 2013
    Publication date: February 27, 2014
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Lusheng Ji, Hisao Chang, Robert R. Miller, II
  • Apparatus, method, and medium for self-organizing multi-hop wireless access networks
    Patent number: 8630275
    Abstract: A wireless computer network includes a backbone network including backbone network nodes authenticated to each other and in communication with each other. The wireless computer network also includes a master authenticator node and a proxy authenticator node among the backbone network nodes. When an unauthenticated new node requests authentication to the backbone network and the unauthenticated new node is in communication with at least one of the backbone network nodes, the at least one of the backbone network nodes becoming the proxy authenticator node for the unauthenticated new node and communicates with the master authenticator node to authenticate the unauthenticated new node to the backbone network.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: January 14, 2014
    Assignee: Fujitsu Limited
    Inventors: Lusheng Ji, Brian Feldman, Jonathan Russell Agre
  • Methods, systems, and products for measuring health
    Patent number: 8600759
    Abstract: Methods, systems, and products measure health data related to a user. A spoken phrase is received and time-stamped. The user is identified from the spoken phrase. A window of time is determined from a semantic content of the spoken phrase. A sensor measurement is received and time-stamped. A difference in time between the time-stamped spoken phrase and the time-stamped sensor measurement is determined and compared to the window of time. When the difference in time is within the window of time, then the sensor measurement is associated with the user.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: December 3, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Lusheng Ji, Hisao Chang, Robert R. Miller, II
  • Synchronizing Wireless Local Area Network Access Points
    Publication number: 20130294438
    Abstract: In a wireless local area network, a first and second access point in which the RF coverage areas overlap are synchronized by positioning a monitor station within the overlap area. The monitor station receives beacon frames from both access points and records the arrival times. A manager in communication with both access points and the monitor station calculates a retardation interval and issues a control command to the second access point to retard transmission of its beacon frame. The retardation interval is calculated such that the contention-free period of the second access point does not overlap the contention-free period of the first access point. The manager may also issue control commands to the first and second access points to adjust their contention-free periods.
    Type: Application
    Filed: July 8, 2013
    Publication date: November 7, 2013
    Inventors: Lusheng Ji, Robert Miller, Harry Worstell
  • MULTI-HOP WIRELESS NETWORKS
    Publication number: 20130272166
    Abstract: A path configuration message is sent to nodes in a multi-hop network along a path between a source node and destination nodes. The path configuration message includes path information and one or more special channel access parameters associated with the path information. The path configuration message temporarily changes the channel access priority for packets matching the path information in the special message. The nodes along the path therefore have higher channel access priority relative to other nearby nodes and other traffic flows. At the end of the a length of a time determined by a time to live parameter in the special message, the nodes resume using default channel access parameters in place of the special channel access parameters for packets matching the path information.
    Type: Application
    Filed: June 11, 2013
    Publication date: October 17, 2013
    Inventors: Lusheng Ji, Bo Han, Robert R. Miller II
  • Devices, Systems, and/or Methods for Managing Wireless Networks
    Publication number: 20130259018
    Abstract: A method includes receiving a beacon message at a wireless network device. The beacon message is followed by a beacon time interval. The method further includes receiving a thin beacon message during the beacon time interval. The thin beacon message is followed by a thin beacon time interval that is shorter than the beacon time interval. The thin beacon time interval includes a contention-free period, a contention period, or a combination thereof.
    Type: Application
    Filed: May 24, 2013
    Publication date: October 3, 2013
    Inventors: Lusheng Ji, Robert Miller, Harry Worstell
  • Prefix Hijacking Detection Device and Methods Thereof
    Publication number: 20130254887
    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: Application
    Filed: May 14, 2013
    Publication date: September 26, 2013
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Lusheng Ji, Dan Pei, Tongquing Qiu, Jia Wang
  • SIGNAL STRENGTH GUIDED INTRA-CELL UPSTREAM DATA FORWARDING
    Publication number: 20130235799
    Abstract: Intra-cell upstream data forwarding is utilized in a wireless network such as a wireless local area network. A network forwarding path is determined based on the signal strength of an access point signal received at client stations within the network, referred to as the OASS. In particular embodiments, a station that is either originating or forwarding a frame inserts its own OASS into the frame before transmitting it and a client station that receives a frame forwards it only if its own OASS exceeds the frame-enclosed OASS, illustratively by at least a predetermined amount.
    Type: Application
    Filed: April 4, 2013
    Publication date: September 12, 2013
    Applicant: AT&T Intellectual Property II, L.P.
    Inventor: Lusheng Ji
  • Synchronizing wireless local area network access points
    Patent number: 8503486
    Abstract: In a wireless local area network, a first and second access point in which the RF coverage areas overlap are synchronized by positioning a monitor station within the overlap area. The monitor station receives beacon frames from both access points and records the arrival times. A manager in communication with both access points and the monitor station calculates a retardation interval and issues a control command to the second access point to retard transmission of its beacon frame. The retardation interval is calculated such that the contention-free period of the second access point does not overlap the contention-free period of the first access point. The manager may also issue control commands to the first and second access points to adjust their contention-free periods.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: August 6, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Lusheng Ji, Robert Miller, Harry Worstell
  • QoS in multi-hop wireless networks
    Patent number: 8483077
    Abstract: A path configuration message is sent to nodes in a multi-hop network along a path between a source node and destination nodes. The path configuration message includes path information and one or more special channel access parameters associated with the path information. The path configuration message temporarily changes the channel access priority for packets matching the path information in the special message. The nodes along the path therefore have higher channel access priority relative to other nearby nodes and other traffic flows. At the end of the a length of a time determined by a time to live parameter in the special message, the nodes resume using default channel access parameters in place of the special channel access parameters for packets matching the path information.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: July 9, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Lusheng Ji, Bo Han, Robert R. Miller, II
  • Devices, systems, and/or methods for managing wireless networks
    Patent number: 8472463
    Abstract: Certain exemplary embodiments comprise a method that can comprise wirelessly transmitting a thin Beacon message from an Access Point in a wireless local area network cell. The thin Beacon message can be transmitted during a superframe subsequent to a Beacon message. The thin Beacon message can be transmitted at a predetermined thin Beacon time interval. The time period between consecutive Beacon and/or thin Beacon messages can be divided further into a thin CFP and a thin CP.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: June 25, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Lusheng Ji, Robert Miller, Harry Worstell
  • FACILITATING VIRTUAL PERSONAL AREA NETWORKS
    Publication number: 20130138786
    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: November 29, 2011
    Publication date: May 30, 2013
    Applicant: AT&T Intellectual Property I, LP
    Inventors: Lusheng Ji, Robert Miller, Jia Wang
  • METHOD AND APPARATUS FOR MACHINE TO MACHINE NETWORK SECURITY MONITORING IN A COMMUNICATIONS NETWORK
    Publication number: 20130127618
    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: Application
    Filed: November 21, 2011
    Publication date: May 23, 2013
    Inventors: Daniel Sheleheda, Donald J. Bowen, Cynthia Cama, Lusheng Ji
  • Prefix hijacking detection device and methods thereof
    Patent number: 8443076
    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: December 17, 2009
    Date of Patent: May 14, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Lusheng Ji, Dan Pei, Tonqing Qiu, Jia Wang
  • Methods, systems, and products for measuring health
    Patent number: 8442835
    Abstract: Methods, systems, and products measure health data related to a user. A spoken phrase is received and time-stamped. The user is identified from the spoken phrase. A window of time is determined from a semantic content of the spoken phrase. A sensor measurement is received and time-stamped. A difference in time between the time-stamped spoken phrase and the time-stamped sensor measurement is determined and compared to the window of time. When the difference in time is within the window of time, then the sensor measurement is associated with the user.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 14, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Lusheng Ji, Hisao Chang, Robert R. Miller, II
  • METHOD AND APPARATUS FOR REMOTE TRUST MANAGEMENT FOR MACHINE TO MACHINE COMMUNICATIONS IN A NETWORK
    Publication number: 20130097317
    Abstract: A method, non-transitory computer readable medium and apparatus for providing remote trust management for machine to machine communications in a network are disclosed. For example, the method receives a request from a sensor to join a wireless network, determines a trust score of the sensor by a server at the network, and allows the sensor to join the wireless network if the trust score is greater than a predetermined threshold.
    Type: Application
    Filed: October 18, 2011
    Publication date: April 18, 2013
    Inventors: DANIEL SHELEHEDA, Donald J. Bowen, Cynthia Cama, Lusheng Ji
  • Signal strength guided intra-cell upstream data forwarding
    Patent number: 8422957
    Abstract: Intra-cell upstream data forwarding is utilized in a wireless network such as a wireless local area network. A network forwarding path is determined based on the signal strength of an access point signal received at client stations within the network, referred to as the OASS. In particular embodiments, a station that is either originating or forwarding a frame inserts its own OASS into the frame before transmitting it and a client station that receives a frame forwards it only if its own OASS exceeds the frame-enclosed OASS, illustratively by at least a predetermined amount.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: April 16, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Lusheng Ji
  • Data forwarding in hybrid mesh networks
    Patent number: 8385345
    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: September 19, 2007
    Date of Patent: February 26, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Lusheng Ji, David M. Britz
  • Manhole security device and methods thereof
    Patent number: 8368552
    Abstract: A security device for detecting the position of a manhole cover includes a pinger device, such as an acoustic pinger, that transmits a signal in the direction of the expected position of the manhole cover. The device takes energy samples to determine if the signal has been reflected back by the manhole cover. If the device determines the signal has not been reflected, it determines that the manhole cover has been moved from the expected position. In response, the device captures an image of an area around the expected position of the manhole cover. In addition, the device can notify a remote security station via a network that the manhole cover has been moved.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: February 5, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert R. Miller, II, Edward G. Amoroso, Susan R. Bailey, Lusheng Ji, Harry R. Worstell, David M. Britz