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    11.
    发明专利
    未知

    公开(公告)号：DE60215584T2

    公开(公告)日：2007-06-21

    申请号：DE60215584

    申请日：2002-06-03

    Applicant: MOTOROLA INC

    Inventor： HARRIS JOHN M ,  CROCKER RONALD T ,  PROCTOR LEE M

    IPC: H04J13/00 ,  H04B7/26 ,  H04J3/00 ,  H04M3/00 ,  H04W4/06 ,  H04W4/10 ,  H04W84/08

    Abstract: In a CDMA wireless communication system (200) a dispatch call can be established between two CDMA mobile stations (202, 226), or between other mobile stations and the CDMA mobile station, or between a CDMA mobile station and a computer(236) located outside of the wireless system. To reduce the delay normally association with call set up in a CDMA system, a dispatch processing network (128, 144) is provided in addition to a telephony switch (118). Dispatch calls and call set up requests are routed to the dispatch processing network from the radio access network (110) which includes base stations (204, 206). Once a dispatch call request is made, while the dispatch processing network begins setting up a traffic channel for the originating mobile communication device, the target is also paged, and upon responding, set up on a traffic channel. The concurrence of establishing radio links with the target and originating communication devices substantially reduces dispatch call set up time.

    APPARATUS AND METHOD FOR NON-LINEAR PROCESSING IN A COMMUNICATION SYSTEM
    13.
    发明专利
    APPARATUS AND METHOD FOR NON-LINEAR PROCESSING IN A COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2247429A1

    公开(公告)日：1998-07-30

    申请号：CA2247429

    申请日：1997-11-04

    Applicant: MOTOROLA INC

    Inventor： ASHLEY JAMES P ,  PROCTOR LEE M

    IPC: H04M1/60 ,  H04B3/23 ,  H04M9/08 ,  H04B3/20

    Abstract: An improved non-linear processor used in echo cancellation eliminates a comfort noise source (214) and instead inputs a control signal (224) directly into a noise suppression system (403). The noise suppression system (403) uses the control signal (224) to inhibit the iterative update of the background noise estimate when the control signal (224) is active, which prevents any residual echo from biasing the noise estimate provided by the noise suppression system (403). Additionally, the control signal (224) is used by a gain calculator (533) within the noise suppression system (403) to attenuate each frequency band to the maximum allowable amount plus the current residual channel signal-to-noise ratio (SNR). Depending on the implementation, the noise suppression system (403) models the background noise of either a user of the PSTN or a user of a mobile station.

    aparelho para processamento não-linear em um sistema de comunicações
    18.
    发明专利
    aparelho para processamento não-linear em um sistema de comunicações 未知

    公开(公告)号：BRPI9709148B8

    公开(公告)日：2016-05-31

    申请号：BR9709148

    申请日：1997-11-04

    Applicant: MOTOROLA MOBILITY INC ,  MOTOROLA SOLUTIONS INC ,  MOTOROLA INC

    Inventor： ASHLEY JAMES P ,  PROCTOR LEE M

    IPC: H04B3/23 ,  H04M1/60 ,  H04M9/00 ,  H04M9/08

    Abstract: aparelho e processo para processamento não-linear em um sistema de comunicações . um processador não-linear aperfeiçoado utilizado em cancelamento de eco elimina uma fonte de ruído de conforto (214) e em vez disso introduz um sinal de controle (224) diretamente em um sistema de supressão de ruído (403). o sistema de supressão de ruído (403) usa o sinal de controle (224) para inibir a atualização iterativa da estimativa de ruído de fundo quando o sinal de controle (224) está ativo, o que impede que qualquer eco residual influente a estimativa de ruído fornecido pelo sistema de supressão de ruído (403). além disso, o sinal de controle (224) é utilizado por um calculador de ganho (533) dentro do sistema de supressão de ruído (403) para atenuar cada faixa de frequência até o máximo permissível mais a razão entre sinal-ruído (snr) de canal residual atual. dependendo da implementação, o sistema de supressão de ruído (403) modela o ruído de fundo ou de um usuário do pstn ou de um usuário de uma estação móvel.

    METHOD AND APPARATUS FOR TRANSMITTING VOICE INFORMATION
    20.
    发明专利
    METHOD AND APPARATUS FOR TRANSMITTING VOICE INFORMATION 未知

    公开(公告)号：AU2002348302A1

    公开(公告)日：2003-06-10

    申请号：AU2002348302

    申请日：2002-11-19

    Applicant: MOTOROLA INC

    Inventor： BATTIN ROBERT D ,  HARRIS JOHN M ,  BROWN TYLER A ,  PROCTOR LEE M

    IPC: H04L1/00 ,  H04W4/10 ,  H04W84/08

    Abstract: A typical radio frame (300) comprises A, B, and C vocoded bits (304). At the end of each frame (300) A and B bits (305) are inserted from a previous frame. Thus, each frame not only comprises A, B, and C bits (304) for that frame, but also comprises those A and B bits (305) originally transmitted in a prior frame. Thus, each frame comprises high and low priority vocoded bits (304) from the current vocoder frame, and those higher priority bits from a preceding frame (305). By placing an inner CRC (302, 303) around the most important bits of the vocoded frame, even though a frame is erased (e.g. its outer CRC (301) failed) it can still be verified that the most important bits in the vocoded frame are correct. Since the class B and C bits can tolerate some errors, the vocoded frame can then play out if its inner CRC passes.

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