Patents Represented by Attorney Val Jean Hilman
  • Patent number: 5509027
    Abstract: A method for a synchronizing user devices (12) performing handoffs includes providing a set of location synchronizing frequencies and data frequencies selected from a hopping set used by network access points (14). Each AP transmits synchronizing data (36) at the synchronizing frequencies during a portion of a short dwell (32), the short dwells (32) being interleaved between long dwells (30). When a user device (12) attempt a handoff, it tunes to at least one of the synchronizing frequencies and receives synchronizing information (36). The user device (12) then selects one AP (14) for link transfer and synchronizes its operation to the hopping set used by the selected AP (14).
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: April 16, 1996
    Assignee: Motorola, Inc.
    Inventors: Frederick W. Vook, William K. Doss, Alan D. Muehlfeld, Mai T. Nguyen, John E. Shaver, Brian J. Wesselman