METHOD AND PARAMETER PREDICTION SYSTEM FOR REESTABLISHING A TEMPORARILY INTERRUPTED DYNAMIC COMMUNICATION LINK

    公开(公告)号:CA2178868A1

    公开(公告)日:1997-01-04

    申请号:CA2178868

    申请日:1996-06-12

    Applicant: MOTOROLA INC

    Abstract: In a dynamic communication system (90) wherein communication parameters vary appreciably between transmissions, subscriber units (200) are susceptible to link blockages resulting in a loss of successive feedback instructing subscriber units (200) of adjustments to communication parameters to be employed in a subsequent transmission on a communication link (105). A method and system are employed to predict subsequent communication parameters and employ these predictions during link blockages in an attempt to reestablish communications and upon the removal of a link blockage, a subscriber unit (200) employs the predicted communication parameters in resuming communications without requiring complex reallocation of an additional communication link.

    66.
    发明专利
    未知

    公开(公告)号:DE19581784B4

    公开(公告)日:2005-12-15

    申请号:DE19581784

    申请日:1995-07-28

    Applicant: MOTOROLA INC

    Abstract: A satellite communication system provides users with global cellular coverage. To facilitate delivery of calls to users having subscriber units, a fixed channel is defined wherein subscriber units are notified of incoming calls. Subscriber units monitor this ring alert channel and examine subscriber unit IDs transmitted in a ring alert message contained therein. When a subscriber unit determines from the subscriber unit ID that a call is being directed to it, it calls into a network to receive a call. Subscriber units also monitor this fixed channel to receive a control channel directory identifying the location of a subscriber unit's broadcast (control) channels.

    System and method for packet data communication

    公开(公告)号:GB2319699B

    公开(公告)日:2001-06-13

    申请号:GB9722713

    申请日:1997-10-29

    Applicant: MOTOROLA INC

    Abstract: A packet data communication system (10) where multiple users (87) can access the same channel (22) to maximize an efficiency of the communication system (10). Each channel (22) is divided into time slots. Each time slot is allocated to a user based on the user's request (303) for time slots and the availability of time slots. If time slots are available, then the system (10) will inform the user (87) and allocate the time slot to the user (87, 305). If there are no available time slots, then the system (10) will inform the user (87) that no time slots are available and access to the system's channel is denied. The user (87) will continue to request access (303) to the system (10) as long as the user has data packets to send.

    69.
    发明专利
    未知

    公开(公告)号:IT1299559B1

    公开(公告)日:2000-03-16

    申请号:ITRM980468

    申请日:1998-07-13

    Applicant: MOTOROLA INC

    Abstract: A laser transmitter (200, 300) includes a femptosecond pulse forming circuit (214, 308) and an ultra high-speed optical switch (218, 304) which enable the transmitter (200, 300) to generate a modulated pulse stream having pulses with widths of under 200 femptoseconds. The transmitted pulse stream is processed by a laser detector (500), including a wideband optical detector (504) and pulse stretching circuit (506), that regenerates information included in the modulated pulse stream.

    70.
    发明专利
    未知

    公开(公告)号:IT1299494B1

    公开(公告)日:2000-03-16

    申请号:ITRM980360

    申请日:1998-06-05

    Applicant: MOTOROLA INC

    Abstract: A method and apparatus have been described for combining multiple satellite constellations into a cooperative network. A GEO tier of satellites receives information to be broadcasted to earth. The GEO tier receives the information from global hubs, regional hubs, and local hubs. Local program material is combined with regional and global program material by either the regional hub or a GEO satellite.

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