1.
    发明专利
    未知

    公开(公告)号:DE69937952T2

    公开(公告)日:2009-01-02

    申请号:DE69937952

    申请日:1999-07-14

    Applicant: MOTOROLA INC

    Abstract: In order to reduce messaging within a wireless communication system an emulator (137) is provided that receives multicast packet data from a router (138). The multicast packet data is transmitted from a server (120) and destined to at least one remote unit (113-117). The emulator (137) additionally receives control data for the current multicast session from the router (138). The first set of data is transmitted to the remote unit (113-117) and the emulator (137) responds to the control data (via a response message (134)) without transmitting the control messages to the remote unit (113-117).

    2.
    发明专利
    未知

    公开(公告)号:ES2170820T3

    公开(公告)日:2002-08-16

    申请号:ES96110155

    申请日:1989-01-23

    Applicant: MOTOROLA INC

    Inventor: FELIX KENNETH A

    Abstract: A method of handoff for use at base sites (110) of a cellular telephone system for handing off from one of the base sites to another one of the base sites at least one of a plurality of cellular telephones (102) each transceiving data packets and sharing a cellular radio channel of the cellular telephone system, which channel may be packet-switched or digital. A handoff message is sent to one of the active ones of the plurality of cellular telephones in response to determined system loading or signal characteristic, as exemplified in FIG. 7.

    3.
    发明专利
    未知

    公开(公告)号:BR9912058A

    公开(公告)日:2001-04-03

    申请号:BR9912058

    申请日:1999-07-14

    Applicant: MOTOROLA INC

    Abstract: Remote units (113-117) that wish to receive a multicast session, monitor a multicast advertisement message on a system broadcast channel to determine a session to receive. Once a remote unit (113-117) requests participation in the multicast event, a common supplemental channel (205) is assigned to the remote unit (113-117), and the multicast session is broadcast to all remote units (113-117) currently participating in the multicast event. The common supplemental channel (205) utilizes two unique spreading codes for channel assignment, with one of the spreading codes being a function of the multicast session address (501) that is broadcast by the server (120).

    4.
    发明专利
    未知

    公开(公告)号:DE68927575D1

    公开(公告)日:1997-02-06

    申请号:DE68927575

    申请日:1989-01-23

    Applicant: MOTOROLA INC

    Inventor: FELIX KENNETH A

    Abstract: A method of handoff for use at base sites (110) of a cellular telephone system for handing off from one of the base sites to another one of the base sites at least one of a plurality of cellular telephones (102) each transceiving data packets and sharing a cellular radio channel of the cellular telephone system, which channel may be packet-switched or digital. A handoff message is sent to one of the active ones of the plurality of cellular telephones in response to determined system loading or signal characteristic, as exemplified in FIG. 7.

    METHOD AND APPARATUS FOR CONVEYING A FIELD OF DATA IN A COMMUNICATION SYSTEM

    公开(公告)号:CA2140029A1

    公开(公告)日:1994-12-08

    申请号:CA2140029

    申请日:1994-05-02

    Applicant: MOTOROLA INC

    Abstract: A communication system (100) segments a field of data such that segments of data are transmitted in their own timeslot with their own control field. The communication system (100) segments the field of data into segments of data, adds control to the timeslot in a field designated for user information, and transmits the segmented data and control during the timeslots to a receiving unit. A receiving unit receives the timeslot, stores the segment of data representing a segment of the field, and recombines the segments to produce the field of data. If a retransmission is requested by a receiving unit, the transmitting unit need only retransmit the single timeslot containing the segment of data received in error. There is never a need to retransmit multiple timeslots since, in effect, each timeslot contains a discrete segment of the field of data.

    DATA TRANSMISSION WITHIN A WIRELESS COMMUNICATION SYSTEM
    7.
    发明公开
    DATA TRANSMISSION WITHIN A WIRELESS COMMUNICATION SYSTEM 有权
    在无线通信系统中数据传输

    公开(公告)号:EP1097543A4

    公开(公告)日:2004-08-25

    申请号:EP99934057

    申请日:1999-07-14

    Applicant: MOTOROLA INC

    CPC classification number: H04L12/189 H04L12/185 H04W28/02

    Abstract: In order to reduce messaging within a wireless communication system an emulator (137) is provided that receives multicast packet data from a router (138). The multicast packet data is transmitted from a server (120) and destined to at least one remote unit (113-117). The emulator (137) additionally receives control data for the current multicast session from the router (138). The first set of data is transmitted to the remote unit (113-117) and the emulator (137) responds to the control data (via a response message (134)) without transmitting the control messages to the remote unit (113-117).

    DATA TRANSMISSION WITHIN A SPREAD-SPECTRUM COMMUNICATION SYSTEM
    9.
    发明公开
    DATA TRANSMISSION WITHIN A SPREAD-SPECTRUM COMMUNICATION SYSTEM 审中-公开
    在扩频通信系统中数据传输

    公开(公告)号:EP1135867A4

    公开(公告)日:2003-02-12

    申请号:EP99964050

    申请日:1999-12-02

    Applicant: MOTOROLA INC

    CPC classification number: H04J13/20 H04J13/0044 H04L1/0002

    Abstract: Remote units (113) having large amounts of data to transmit will be dynamically assigned Orthogonal Variable Spreading Factor (OVSF) codes corresponding to higher data rates and remote units (113) with lower amounts of data to be transmitted will be assigned OVSF codes corresponding to lower data rates. Additionally, in an alternate embodiment of the present invention, once system interference becomes greater than a predetermined threshold, the data rate between the base station (100) and remote units (113) in communication with the base station (100) is reduced. The reduction of the data rate between the base station (100) and remote units (113) occurs by changing the current OVSF codes utilized by both the remote units (113) and the base station (100).

    10.
    发明专利
    未知

    公开(公告)号:DE68927575T2

    公开(公告)日:1997-06-26

    申请号:DE68927575

    申请日:1989-01-23

    Applicant: MOTOROLA INC

    Inventor: FELIX KENNETH A

    Abstract: A method of handoff for use at base sites (110) of a cellular telephone system for handing off from one of the base sites to another one of the base sites at least one of a plurality of cellular telephones (102) each transceiving data packets and sharing a cellular radio channel of the cellular telephone system, which channel may be packet-switched or digital. A handoff message is sent to one of the active ones of the plurality of cellular telephones in response to determined system loading or signal characteristic, as exemplified in FIG. 7.

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