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    Cdma dispatch system
    4.
    发明专利
    Cdma dispatch system 未知

    公开(公告)号：AU8678798A

    公开(公告)日：1999-05-17

    申请号：AU8678798

    申请日：1998-07-31

    Applicant: MOTOROLA INC

    Inventor： CHINITZ LEIGH M ,  NEEDHAM MICHAEL L ,  WILSON TIMOTHY J

    IPC: H04B7/216 ,  H04B7/26 ,  H04W4/06 ,  H04W4/14 ,  H04W72/04 ,  H04W84/08 ,  H04J13/00 ,  H04J3/02 ,  H04B7/185 ,  H04B7/19

    Abstract: A quality dispatch service on a CDMA based wireless system (50). To achieve spectral efficiency and fast access for follow-up calls, in response to a request by a talkgroup member (A-D) to have a group call established, the non-requesting (listening-only) members (B-D) are allowed to establish a low-rate (non-voice) signaling link (54-56) in the reverse direction (inbound) for the limited purpose of (i) providing forward power control information to the fixed infrastructure; (ii) requesting soft hand-off when required; and (iii) maintaining the correct reverse link power control to allow for fast channel access for a follow-on call.

    CONTROL OF SCHEDULING MULTIACCESS TO DATA COMMUNICATION FEATURE
    6.
    发明专利
    CONTROL OF SCHEDULING MULTIACCESS TO DATA COMMUNICATION FEATURE 未知

    公开(公告)号：CZ202393A3

    公开(公告)日：1994-03-16

    申请号：CS202393

    申请日：1992-03-26

    Applicant: MOTOROLA INC

    Inventor： CRISLER KENNETH J ,  NEEDHAM MICHAEL L

    IPC: H04J3/00 ,  H04J3/16 ,  H04L12/407 ,  H04W84/08

    Abstract: A method of providing a communication unit (10) access to a shared communication resource. In the communication unit, a clock (123) is maintained, and the unit detects the time when an inhibit period on the shared communication resource begins, and the time at which it concludes. When access to the shared communication resource is desired, the unit attempts to access the communication resource based on the time at which access was desired, as well as the times at which a detected inhibit condition began and concluded. A virtual time clock runs only during non-inhibit periods. Access to the communication resource is then based on when the virtual time clock equals the desired access time.

    METHOD FOR MULTIPURPOSE UTILIZING SIGNAL SOURCES IN DATA TRANSFER SYSTEMS
    7.
    发明专利
    METHOD FOR MULTIPURPOSE UTILIZING SIGNAL SOURCES IN DATA TRANSFER SYSTEMS 未知

    公开(公告)号：HU9302610D0

    公开(公告)日：1993-12-28

    申请号：HU9302610

    申请日：1992-03-26

    Applicant: MOTOROLA INC

    Inventor： CRISLER KENNETH J ,  NEEDHAM MICHAEL L

    IPC: H04J3/00 ,  H04B7/26 ,  H04J3/16 ,  H04L12/56 ,  H04W72/04 ,  H04W74/08

    Abstract: A communication resource is subdivided as a function of time into a plurality of time slots (210), which may then be further subdivided on a non-periodic basis into a number of sub-slots (220). In a slot or sub-slot, communication units (101) may utilize the communication resource according to a specific set of access methods defined for that slot or sub-slot. In one embodiment the time slots are subdivided on a non-periodic basis into a least two random access sub-slots, during which communication units may either request one or more reserved time slots, or send unreserved data packets (240). In response to requests for reserved time slots from a requesting communication unit, one or more reserved time slots are provided for the use of the requesting communication unit.

    Method and apparatus for group calls in a wireless cdma communication system
    8.
    发明专利
    Method and apparatus for group calls in a wireless cdma communication system 未知

    公开(公告)号：AU3565599A

    公开(公告)日：1999-11-08

    申请号：AU3565599

    申请日：1999-04-16

    Applicant: MOTOROLA INC

    Inventor： CHINITZ LEIGH M ,  NEEDHAM MICHAEL L ,  WILSON TIMOTHY J

    IPC: H04B7/26 ,  H04W4/06 ,  H04W52/14 ,  H04W52/24 ,  H04W84/08 ,  H04B7/216

    Abstract: A controller (120), in response to receiving a request for a group call (201) targeting a group (101), allocates at least one power adjustment channel to the group call (202) and sends identification of the at least one power adjustment channel to at least some of the subscriber units in the group (203). Using the at least one power adjustment channel, the controller also sends unique power adjustment information to each of the at least some subscriber units (204). Unique power adjustment channel access information is also sent to the subscriber units so that each subscriber unit can receive its own unique power adjustment information (503) and adjust its inbound transmission power (504) in response. In this manner, efficient reverse power control is provided for multiple subscriber units thereby facilitating group calls in CDMA systems.

    METHOD FOR CONTROLLING ACCESS FOR DATA TRANSMISSIOIN SIGNAL SOURCES
    9.
    发明专利
    METHOD FOR CONTROLLING ACCESS FOR DATA TRANSMISSIOIN SIGNAL SOURCES 未知

    公开(公告)号：HU9302592D0

    公开(公告)日：1993-12-28

    申请号：HU9302592

    申请日：1992-03-26

    Applicant: MOTOROLA INC

    Inventor： CRISLER KENNETH J ,  NEEDHAM MICHAEL L

    IPC: H04J3/00 ,  H04J3/16 ,  H04L12/407 ,  H04W84/08

    Abstract: A method of providing a communication unit (10) access to a shared communication resource. In the communication unit, a clock (123) is maintained, and the unit detects the time when an inhibit period on the shared communication resource begins, and the time at which it concludes. When access to the shared communication resource is desired, the unit attempts to access the communication resource based on the time at which access was desired, as well as the times at which a detected inhibit condition began and concluded. A virtual time clock runs only during non-inhibit periods. Access to the communication resource is then based on when the virtual time clock equals the desired access time.

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