Patents by Inventor Lichun Bao

Lichun Bao 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: 7046639
    Abstract: A system and method of providing distributed election of a shared transmission schedule within an ad hoc network. The invention includes a collision-free access protocol which resolves channel access contentions for time division multiple access (TDMA) of a single channel. Time-slots are organized into part numbers, which are included within sections, a sequence of which define a block. Each node is given a ring number according to its location within the network topology and maintains local neighbor information along with its own part number and message digest. Collision-free channel access is automatically scheduled and repetitious contention phases are resolved by a random permutation algorithm operating in message digests. An empty time-slot utilization method is also described and data packets may also be transmitted subject to a non-zero collision probability within a blind section of the block.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: May 16, 2006
    Assignee: The Regents of the University of California
    Inventors: J. J. Garcia-Luna-Aceves, Lichun Bao
  • Publication number: 20020067736
    Abstract: A system and method of providing distributed election of a shared transmission schedule within an ad hoc network. The invention includes a collision-free access protocol which resolves channel access contentions for time division multiple access (TDMA) of a single channel. Time-slots are organized into part numbers, which are included within sections, a sequence of which define a block. Each node is given a ring number according to its location within the network topology and maintains local neighbor information along with its own part number and message digest. Collision-free channel access is automatically scheduled and repetitious contention phases are resolved by a random permutation algorithm operating in message digests. An empty time-slot utilization method is also described and data packets may also be transmitted subject to a non-zero collision probability within a blind section of the block.
    Type: Application
    Filed: September 28, 2001
    Publication date: June 6, 2002
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: J.J. Garcia-Luna-Aceves, Lichun Bao