Patents by Inventor Priscilla L. Chen

Priscilla L. Chen 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).

  • Adaptive channel access scheme
    Patent number: 7343163
    Abstract: An adaptive channel access scheme allows for statistics that are collected to be used to group radio users into subgroups according to the desired statistic. The subgroups then utilize channels, separated by time or frequency, to access the communication system (100). The sub-grouping of the radio users is designed to help minimize the chances of channel-access collisions from occurring.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: March 11, 2008
    Assignee: Motorola, Inc.
    Inventors: Matthew R. Perkins, Vernon A. Allen, Robert J. O'Dea, Juan C. Palacios, Priscilla L. Chen
  • Method and apparatus for a communication network with nodes capable of selective cluster head operation
    Patent number: 7203729
    Abstract: A communication device (111) determines whether to operate as a cluster head in a network of communication devices (100). The device performs a self-assessment regarding its ability to operate as a cluster head based on a formula that assigns weights to factors related to its capabilities and preferably its environment (410, 420, 430). The ability of the device is combined with a random value component in determining whether to operate as a cluster head (440). In the preferred embodiment, upon assumption of cluster head status, the device communicates with neighboring devices to signal its cluster head status, and to invite others to participate in the formation of a cluster.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: April 10, 2007
    Assignee: Motorola Inc.
    Inventors: Priscilla L. Chen, Lance E. Hester, Yan Huang
  • Neighbor-assisted contention resolution for multi-user communication
    Patent number: 6594247
    Abstract: A contention resolution method includes the steps of determining a contention has occurred and requesting contention resolution from radios in the system (604). Radios in the system receive the request and do not transmit in the next control frame (606). Group leader radios (202, 208 and 214) transmit the identification code they were able to demodulate in the previous frame to the master radio (608). The master radio (212) receives the information from the group leaders and transmits a control-channel access message to one of the contending radios (610).
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: July 15, 2003
    Assignee: Motorola, Inc.
    Inventors: Matthew R. Perkins, Vernon Anthony Allen, Robert J. O'Dea, Juan Carlos Palacios, Priscilla L. Chen
  • Method and apparatus for a communication network with nodes capable of selective cluster head operation
    Publication number: 20020169846
    Abstract: A communication device (111) determines whether to operate as a cluster head in a network of communication devices (100). The device performs a self-assessment regarding its ability to operate as a cluster head based on a formula that assigns weights to factors related to its capabilities and preferably its environment (410, 420, 430). The ability of the device is combined with a random value component in determining whether to operate as a cluster head (440). In the preferred embodiment, upon assumption of cluster head status, the device communicates with neighboring devices to signal its cluster head status, and to invite others to participate in the formation of a cluster.
    Type: Application
    Filed: March 27, 2002
    Publication date: November 14, 2002
    Inventors: Priscilla L. Chen, Lance E. Hester, Yan Huang
  • Neighbor-assisted contention resolution for multi-user communication
    Publication number: 20020110141
    Abstract: A contention resolution method includes the steps of determining a contention has occurred and requesting contention resolution from radios in the system (604). Radios in the system receive the request and do not transmit in the next control frame (606). Group leader radios (202, 208 and 214) transmit the identification code they were able to demodulate in the previous frame to the master radio (608). The master radio (212) receives the information from the group leaders and transmits a control-channel access message to one of the contending radios (610).
    Type: Application
    Filed: February 12, 2001
    Publication date: August 15, 2002
    Inventors: Matthew R. Perkins, Vernon Anthony Allen, Robert J. O'Dea, Juan Carlos Palacios, Priscilla L. Chen