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    METHOD AND APPARATUS FOR COMMUNICATING A CALL
    22.
    发明公开
    METHOD AND APPARATUS FOR COMMUNICATING A CALL 有权
    方法和装置用于切换CALL

    公开(公告)号：EP1224763A4

    公开(公告)日：2004-08-11

    申请号：EP00965168

    申请日：2000-09-20

    Applicant: MOTOROLA INC

    Inventor： GORDAY PAUL EDWARD ,  KUZNICKI WILLIAM JOSEPH ,  LEITCH CLIFFORD DANA ,  D AMICO THOMAS VICTOR

    IPC: H04J11/00 ,  H04L1/00 ,  H04L5/12 ,  H04L27/34 ,  H04L27/36

    CPC classification number: H04L1/0071 ,  H04L1/0003 ,  H04L5/12 ,  H04L27/34

    Abstract: A wireless communication system (10) employing quadrature amplitude modulation techniques comprises a system controller (22), at least one radio frequency base transmitter (26), and at least one wireless communication device (35). The system controller (22) generates a downlink call (34) for transmission between the radio frequency base transmitter (26) and the wireless communication device (35). Multiplexing an I-channel bit stream (74) comprised of a first set of calls (70) interleaved together and a Q-channel bit stream (80) comprised of a second set of calls (76) interleaved together generates the downlink call (34). One wireless communication device demultiplexes the downlink call (34) and processes the I-channel bit stream (74). Another wireless communication device demultiplexes the downlink call (34) and processes the Q-channel bit stream (80).

    24.
    发明专利
    未知

    公开(公告)号：AT291295T

    公开(公告)日：2005-04-15

    申请号：AT96902592

    申请日：1996-01-11

    Applicant: MOTOROLA INC

    Inventor： LEITCH CLIFFORD DANA ,  SCHWENDEMAN ROBERT JOHN ,  MACNAK PHILIP PAUL

    IPC: H04W76/04 ,  H04B7/005 ,  H04L1/00 ,  H04L1/18 ,  H04W52/18 ,  H04W88/18 ,  H04B7/26 ,  H04K1/02

    Abstract: A method and apparatus adaptively selects a communication strategy for communicating a message in a selective call radio communication system including a fixed portion (100) and a portable portion (101). The fixed portion (100) transmits (402) an alert signal to the portable portion (101), and awaits (404) an acknowledgment signal including a signal quality estimate from the portable portion (101). The portable portion (101) receives (602) the alert signal, and computes (604, 606) the signal quality estimate therefrom. The portable portion (101) then sends (608) the acknowledgment signal to the fixed portion (100). In response to the acknowledgment signal, the fixed portion (100) selects (407) a transmission strategy in accordance with the signal quality estimate. For compatibility, the transmission strategy requires a matching reception strategy in the portable portion (101). After sending the acknowledgment signal, the portable portion (101) selects (609) the matching reception strategy in accordance with the signal quality estimate sent in the acknowledgment signal without requiring further communication with the fixed portion (100).

    DUAL MODE RECEIVER HAVING BATTERY SAVING CAPABILITY
    25.
    发明专利
    DUAL MODE RECEIVER HAVING BATTERY SAVING CAPABILITY 未知

    公开(公告)号：CA2139516C

    公开(公告)日：2000-02-08

    申请号：CA2139516

    申请日：1992-06-29

    Applicant: MOTOROLA INC

    Inventor： SIWIAK KAZIMIERZ ,  LEITCH CLIFFORD DANA ,  SCHWENDEMAN ROBERT JOHN

    IPC: H04B1/16 ,  H04B5/04 ,  H04W8/24 ,  H04W52/02 ,  H04W88/02

    Abstract: A dual mode communication receiver comprises a first demodulator (108) for detecting information received in a first modulation format, and a second demodulator (112), responsive to the information detected in the first modulation format, for detecting information received in a second modulation format. The first and second demodulators (108, 112) share a common receiver front end (102). A power conservation circuit (104) is provided for selectively supplying power to the first and second demodulators (108, 112) for enabling the detecting of the information received in the first modulation format and the second modulation format, respectively.

    26.
    发明专利
    未知

    公开(公告)号：BR9607605A

    公开(公告)日：1998-06-09

    申请号：BR9607605

    申请日：1996-01-11

    Applicant: MOTOROLA INC

    Inventor： SATYAMURTI SUNIL ,  SIWIAK KAZIMIERZ ,  KUZNICKI WILLIAM JOSEPH ,  SCHWENDEMAN ROBERT JOHN ,  LEITCH CLIFFORD DANA

    IPC: G10L19/00 ,  H04B1/66 ,  H04J1/14

    Abstract: The present invention comprises a method for compressing a plurality of voice signals within a voice communication resource (see FIG. 6) having a given bandwidth within a voice communication system (100). The method comprises the steps of subchanneling the voice communication resource into a plurality of subchannels (441, 442, 443), placing a pair of the plurality of voice signals (401, 402) on a subchannel (441); modulating the pair of the plurality of voice signals (401, 402) about a pilot signal (581) within the subchannel (441) using single sideband modulation; and compressing the time of each of the voice signals (401, 402) within the plurality of subchannels (441, 442, 443), wherein these step provide a compressed voice signal.

    METODO Y APARATO PARA SELECCIONAR ADAPTABLEMENTE UNA ESTRATEGIA DE COMUNICACION EN UN SISTEMA DE COMUNICACIONES DE RADIO DE LLAMADA SELECTIVA.
    27.
    发明专利
    METODO Y APARATO PARA SELECCIONAR ADAPTABLEMENTE UNA ESTRATEGIA DE COMUNICACION EN UN SISTEMA DE COMUNICACIONES DE RADIO DE LLAMADA SELECTIVA. 未知

    公开(公告)号：MX9706533A

    公开(公告)日：1997-11-29

    申请号：MX9706533

    申请日：1996-01-11

    Applicant: MOTOROLA INC

    Inventor： LEITCH CLIFFORD DANA ,  SCHWENDEMAN ROBERT JOHN ,  MACNAK PHILIP PAUL

    IPC: H04B7/005 ,  H04W76/04 ,  H04L1/00 ,  H04L1/18 ,  H04W52/18 ,  H04W88/18 ,  H04L07/00

    Abstract: Un método y aparato selecciona adaptablemente una estrategia de comunicacion para comunicar un mensaje en un sistema de comunicaciones de radio de llamada selectiva que incluye una parte fija (100) y una parte portátil (101). La parte fija (100) transmite (402) una señal de alarma a la parte portátil (101) y espera (404) una señal de acuse de recibo que incluye una estimacion de calidad de señal desde la parte portátil (101). La parte portátil (101) recibe (602) la señal de alarma y computa (604, 606) la estimacion de calidad de señal de aquélla. La parte portátil (101) envía luego (608) la señal de acuse de recibo a la parte fija (100). En respuesta a la señal de acuse de recibo, la parte fija (100) selecciona (407) una estrategia de transmision de acuerdo con la estimacion de calidad de señal. Para que haya compatibilidad, la estrategia de transmision necesita también una estrategia de recepcion coincidente en la parte portátil (101). Después de enviar la señal de acuse de recibo, la parte portátil (101) selecciona (609) la estrategia de recepcion coincidente de acuerdo con la estimacion de calidad de señal enviada en la señal de acuse de recibo sin que se necesite otra comunicacion con la parte fija (100).

    Voice compression in a paging network system
    29.
    发明专利
    Voice compression in a paging network system 未知

    公开(公告)号：AU4652396A

    公开(公告)日：1996-09-18

    申请号：AU4652396

    申请日：1996-01-11

    Applicant: MOTOROLA INC

    Inventor： LEITCH CLIFFORD DANA ,  SCHWENDEMAN ROBERT JOHN ,  SIWIAK KAZIMIERZ ,  KUZNICKI WILLIAM JOSEPH ,  SATYAMURTI SUNIL

    IPC: G10L19/00 ,  H04B1/66 ,  H04J1/14

    Abstract: The present invention comprises a method for compressing a plurality of voice signals within a voice communication resource (see FIG. 6) having a given bandwidth within a voice communication system (100). The method comprises the steps of subchanneling the voice communication resource into a plurality of subchannels (441, 442, 443), placing a pair of the plurality of voice signals (401, 402) on a subchannel (441); modulating the pair of the plurality of voice signals (401, 402) about a pilot signal (581) within the subchannel (441) using single sideband modulation; and compressing the time of each of the voice signals (401, 402) within the plurality of subchannels (441, 442, 443), wherein these step provide a compressed voice signal.

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