1.
    发明专利
    未知

    公开(公告)号:BR0317869A

    公开(公告)日:2005-12-06

    申请号:BR0317869

    申请日:2003-12-04

    Applicant: MOTOROLA INC

    Abstract: A WLAN communication system (10) and method employs mobile WLAN base stations (16) that include WLAN transceivers (26) and memory (30) for storing received messages from one or more mobile WLAN devices (12a-12n). The mobile WLAN base stations (16) serve as moving message carriers or message repeaters of messages for the mobile WLAN devices. In one embodiment, a mobile WLAN base station (16) receives messages transmitted by several mobile WLAN devices (12a-12n), temporarily stores the received messages, and delivers the stored messages to a fixed WLAN base station or another mobile WLAN base station when the mobile WLAN base station (16) moves to within communication range of the applicable fixed or other mobile WLAN base station.

    An enhanced ofdm by use of alternating polarization states

    公开(公告)号:AU2003299719A8

    公开(公告)日:2004-07-29

    申请号:AU2003299719

    申请日:2003-12-18

    Applicant: MOTOROLA INC

    Abstract: An Orthogonal Frequency Division Multiplexer (OFDM) transmitter and receiver apparatus consistent with certain embodiments of the present invention receives data to be transmitted and maps (204) a first portion of the data to a first polarization state and a second portion of the data to a second polarization state. A first transmitter (216) transmits the first portion of the data as a set of first OFDM subcarriers using an antenna (230) exhibiting a first polarization. A second transmitter (234) transmits the second portion of the data as a set of second OFDM subcarriers using an antenna (240) exhibiting a second polarization, wherein the first polarization is orthogonal to the second polarization. A receiver apparatus uses a first antenna (302) exhibiting the first polarization and a second antenna (306) exhibiting the second polarization. A first OFDM receiver (310) receives a first set of polarized OFDM subcarriers from the first antenna (302) while a second OFDM receiver (324) receives a second set of polarized OFDM subcarriers from the second antenna (306). A decoder (330) decodes the first and second sets of OFDM subcarriers and combines them into a stream of data.

    6.
    发明专利
    未知

    公开(公告)号:BR0204740A

    公开(公告)日:2003-04-15

    申请号:BR0204740

    申请日:2002-04-02

    Applicant: MOTOROLA INC

    Abstract: A system (10) for dynamic process assignment among a plurality of devices (40) includes an initial coordinator (38), a requesting device (60), and a resource device (62). The initial coordinator (38) includes a list of available resources (56) for each device of the plurality of devices (40). The requesting device (60) requests the use of a desired resource. In response to the request from the requesting device (60), the initial coordinator (38) identifies an available resource associated with one of the plurality of devices (40) for use by the requesting device (60) as the desired resource.

    7.
    发明专利
    未知

    公开(公告)号:BR0003420A

    公开(公告)日:2001-03-13

    申请号:BR0003420

    申请日:2000-07-26

    Applicant: MOTOROLA INC

    Abstract: A vehicle locating system (200) includes a beacon (108) carried by a vehicle, a tracking control station (106) for generating a beacon activation signal (110) which enables the beacon (108) to broadcast a vehicle identification signal (112), and one or more mobile communication devices (116, 118) which include a first receiver (516) utilized to receive a location signal (122) identifying a geographic location of a mobile communication device, and a transceiver (406) utilized to provide communication between said mobile communication device and a communication system controller. The one or more mobile communication devices (116, 118) further include a second receiver (502) utilized to receive the vehicle identification signal (112) broadcast by the beacon (108), and a vehicle tracking controller (520), responsive to the vehicle identification signal (112) which is received, for controlling a transmission of the vehicle identification signal (112) and the location signal (122).

    DIVERSIDAD COOPERATIVA EN UNA RED AUTO ORGANIZADA.

    公开(公告)号:ES2282282T3

    公开(公告)日:2007-10-16

    申请号:ES01961905

    申请日:2001-08-01

    Applicant: MOTOROLA INC

    Abstract: Un método (300) para proporcionar ganancia de diversidad en un sistema de comunicaciones sin hilos que tiene al menos una primera red funcionando con un primer protocolo y al menos una segunda red formada por una pluralidad de dispositivos sin hilos cooperativos funcionando con un segundo protocolo, que comprende las etapas de: recibir (310) una señal usando el primer protocolo en un dispositivo o más de la pluralidad de dispositivos sin hilos cooperativos pretendida para un miembro objetivo de la pluralidad de dispositivos sin hilos cooperativos; y procesar (312) la señal cooperativamente en medio de la pluralidad de dispositivos sin hilos cooperativos para proporcionar una ganancia de diversidad de la señal para el miembro objetivo, caracterizado por la pluralidad de dispositivos sin hilos cooperativos funcionando con el segundo protocolo y al menos el primer protocolo.

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