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38 records (took 0.022 seconds)

    1.
    发明专利
    未知

    公开(公告)号：PT96678B

    公开(公告)日：1998-08-31

    申请号：PT9667891

    申请日：1991-02-05

    Applicant: MOTOROLA INC

    Inventor： KOTZIN MICHAEL DALE ,  SPEAR STEPHEN LEE

    IPC: H01J3/24 ,  H04B3/60 ,  H04J3/00 ,  H04M7/00 ,  H04W88/08 ,  H04B1/713

    Abstract: Method and apparatus for facilitating communication of information in a system without the use of a baseband hopping unit, by sharing a common TDM bus between a plurality of radio communication units, processing units, and information links, where the processing units extract traffic channel information, packetize and/or unpacketize the information, and return same back to the common bus for retrieval by the information links or radio communication units.

    Shared-carrier frequency-hopping
    2.
    发明专利
    Shared-carrier frequency-hopping 未知

    公开(公告)号：IE78845B1

    公开(公告)日：1998-03-11

    申请号：IE57791

    申请日：1991-02-20

    Applicant: MOTOROLA INC

    Inventor： KOTZIN MICHAEL DALE ,  SPEAR STEPHEN LEE

    IPC: H04B7/26 ,  H04J13/00 ,  H04J13/06 ,  H04W16/02 ,  H04W16/12 ,  H04W16/24 ,  H04B7/216

    Abstract: In a TDMA cellular network, there is provided a mechanism for shared-carrier frequency-hopping. It comprises: allocating on a frame basis within a reuse diameter to one coverage area during certain timeslot(s) at least one from a pool of TDM-frame-hopped carriers and allocating on a frame basis within that carrier reuse diameter to another coverage area during certain other, substantially non-overlapping timeslot(s) that frame-hopped carrier, all in substantially non-interfering time-synchronism with any proximal reuse of that carrier, whereby the advantages of frequency hopping are obtained. Stated differently, it comprises: at one instant in time, allocating within a reuse diameter to one coverage area at least one of a plurality of hopped carriers and at that same instant in time, allocating within that carrier reuse diameter to another coverage area another of that plurality of hopped carriers, all in time-synchronism with any proximal reuse of that carrier. The control and access carriers may also be included in the hopping pool, causing certain timeslots to be hopped on a sequence different from the others. The pool of hopped carriers is further apportioned among co-located sites into hopping groups, thereby reducing intra-system synchronization requirements. To solve the near/far problem, TDM timeslots bordering hopping boundaries are preferentially allocated to less distant mobile users.

    6.
    发明专利
    未知

    公开(公告)号：FI951096A0

    公开(公告)日：1995-03-09

    申请号：FI951096

    申请日：1995-03-09

    Applicant: MOTOROLA INC

    Inventor： SPEAR STEPHEN LEE

    IPC: H04Q3/00 ,  H04W76/02 ,  H04W92/14 ,  H04Q

    Abstract: A method and apparatus is provided for locally routing calls in a communication system. The method and apparatus provide PSTN interconnects (N, P, Q,) at each of the base station controllers (11, 14) and at the mobile switching center (12). A control intercept (13) intercepts PSTN command information being communicated between the mobile switching center (12) and the base station controllers (11, 14), and routes the PSTN command information to a PSTN interconnect (N, P) at a base station controller (11, 14) when local call service is required.

    7.
    发明专利
    未知

    公开(公告)号：MX174071B

    公开(公告)日：1994-04-19

    申请号：MX2438391

    申请日：1991-02-01

    Applicant: MOTOROLA INC

    Inventor： KOTZIN MICHAEL DALE ,  SPEAR STEPHEN LEE

    IPC: H01J3/24 ,  H04B3/60 ,  H04J3/00 ,  H04M7/00 ,  H04W88/08 ,  H04L27/30

    Abstract: Method and apparatus for facilitating communication of information in a system without the use of a baseband hopping unit, by sharing a common TDM bus between a plurality of radio communication units, processing units, and information links, where the processing units extract traffic channel information, packetize and/or unpacketize the information, and return same back to the common bus for retrieval by the information links or radio communication units.

    Shared-carrier frequency-hopping
    8.
    发明专利
    Shared-carrier frequency-hopping 未知

    公开(公告)号：IE910577A1

    公开(公告)日：1991-08-28

    申请号：IE57791

    申请日：1991-02-20

    Applicant: MOTOROLA INC

    Inventor： KOTZIN MICHAEL DALE ,  SPEAR STEPHEN LEE

    IPC: H04B7/26 ,  H04J13/00 ,  H04J13/06 ,  H04W16/02 ,  H04W16/12 ,  H04W16/24 ,  H04B7/216

    Abstract: In a TDMA cellular network, there is provided a mechanism for shared-carrier frequency-hopping. It comprises: allocating on a frame basis within a reuse diameter to one coverage area during certain timeslot(s) at least one from a pool of TDM-frame-hopped carriers and allocating on a frame basis within that carrier reuse diameter to another coverage area during certain other, substantially non-overlapping timeslot(s) that frame-hopped carrier, all in substantially non-interfering time-synchronism with any proximal reuse of that carrier, whereby the advantages of frequency hopping are obtained. Stated differently, it comprises: at one instant in time, allocating within a reuse diameter to one coverage area at least one of a plurality of hopped carriers and at that same instant in time, allocating within that carrier reuse diameter to another coverage area another of that plurality of hopped carriers, all in time-synchronism with any proximal reuse of that carrier. The control and access carriers may also be included in the hopping pool, causing certain timeslots to be hopped on a sequence different from the others. The pool of hopped carriers is further apportioned among co-located sites into hopping groups, thereby reducing intra-system synchronization requirements. To solve the near/far problem, TDM timeslots bordering hopping boundaries are preferentially allocated to less distant mobile users.

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