62.
    发明专利
    未知

    公开(公告)号:DE69841391D1

    公开(公告)日:2010-01-28

    申请号:DE69841391

    申请日:1998-05-13

    Applicant: QUALCOMM INC

    Abstract: A set of individually gain adjusted subscriber channels (402, 404, 411, 415) are formed via the use of a set of orthogonal subchannel codes (Wc, Ws, Wf) having a small number of PN spreading chips per orthogonal waveform period. Data to be transmitted via one of the transmit channels is low code rate error correction encoded and sequence repeated before being modulated with one of the subchannel codes, gain adjusted, and summed with data modulated using the other subchannel codes. The resulting summed data (410, 420) is modulated using a user long code and a pseudorandom spreading code (PN code) and upconverted for transmission. The use of the short orthogonal codes provides interference suppression while still allowing extensive error correction coding and repetition for time diversity to overcome the Raleigh fading commonly experienced in terrestrial wireless systems. The set of sub-channel codes may comprise four Walsh codes, each orthogonal to the remaining codes of the set. The use of four sub-channels is preferred as it allows shorter orthogonal codes to be used, however, the use of a greater number of channels and therefore longer codes is acceptable. Preferably, pilot data is transmitted via a first one of the transmit channels and power control data transmitted via a second transmit channel. The length, or number of chips, in each channel code may be different to further reduce the peak-to-average transmit power for higher rate data transmission.

    64.
    发明专利
    未知

    公开(公告)号:DE69638087D1

    公开(公告)日:2009-12-31

    申请号:DE69638087

    申请日:1996-01-17

    Applicant: QUALCOMM INC

    Abstract: A method and apparatus for arranging various types of data, and at various rates, into a uniquely structured format for transmission. Data for transmission formatting may be speech data provided by vocoder (14) or different types of secondary traffic. The data organized into frames of a predetermined time duration for transmission by a microprocessor (18). The data frames are organized, depending on the data, to be at one of several data rates. Vocoder data is provided by vocoder (14) at one of several data rates and is organized in the frame according to a predetermined format. Frames may be formatted with a sharing of vocoder data with non-vocoder data to be at a highest frame data rate. Different types of non-vocoder data may be organized so as to also be at the highest frame data rate. Additional control data may be provided within the data frames to support various aspects of the transmission and recovery upon reception.

    66.
    发明专利
    未知

    公开(公告)号:DE69841049D1

    公开(公告)日:2009-09-17

    申请号:DE69841049

    申请日:1998-02-10

    Applicant: QUALCOMM INC

    Abstract: In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.

    67.
    发明专利
    未知

    公开(公告)号:NO327536B1

    公开(公告)日:2009-08-03

    申请号:NO20001153

    申请日:2000-03-07

    Applicant: QUALCOMM INC

    Abstract: A method and apparatus for providing orthogonal spot beams (14a, 14b), sectors (16a, 16b), and picocells (18). The transmissions can be made orthogonal by using orthogonal auxiliary pilots and different Walsh traffic channels in adjacent areas. In accordance with the IS-95 standard, the pilot signal is covered with the 64-chip Walsh sequence zero. The 64-chip all zeros Walsh sequence can be designated as P and the 64-chip all one sequence can be designated as M. In the present invention, additional pilot signals can be provided by concatenating 64-chip all zeros P and all ones M sequences. Thus, for two pilot signals, pilot Walsh sequences of PP and PM can be used. For four pilot signals, pilot Walsh sequences of PPPP, PMPM, PPMM, and PMMP can be used. The present invention can be extended such that any required number of pilot Walsh sequences can be generated by substituting each bit in an K-bit Walsh sequence with the 64-chip all zeros P or all ones M sequence depending on the value of that bit.

    PROCEDIMIENTO Y SISTEMA PARA EL CONTROL DE LA POTENCIA DE TRANSMISION BASADA EN EL PILOTO.

    公开(公告)号:ES2310411T3

    公开(公告)日:2009-01-01

    申请号:ES07103300

    申请日:1998-01-27

    Applicant: QUALCOMM INC

    Abstract: Un procedimiento para realizar el control de la potencia de transmisión en una unidad de abonado sobre una señal de enlace inverso transmitida a una potencia de transmisión de enlace inverso, en el que la señal de enlace inverso tiene un canal de tráfico transmitido a una potencia de transmisión de canal de tráfico, y un canal piloto transmitido a una potencia de transmisión de canal piloto, comprendiendo los pasos de: medir en una estación base una energía de recepción del canal piloto de enlace inverso; generar un comando de control de la potencia de acuerdo con una comparación de la mencionada medida de energía de recepción con un umbral de energía, en el que el mencionado comando de control de la potencia comprende un comando de aumento o de disminución; recibir dicho comando de control de la potencia en la mencionada unidad de abonado; y caracterizado por: examinar dicho comando de control de la potencia en la mencionada unidad de abonado para determinar si el comando se va a aplicar al canal de tráfico de enlace inverso, al canal piloto de enlace inverso o a toda la señal de enlace inverso; y ajustar de manera selectiva la potencia de transmisión de el canal de piloto de enlace inverso, el canal de tráfico de enlace inverso o toda la señal de enlace inverso de acuerdo con el paso de examen.

    70.
    发明专利
    未知

    公开(公告)号:DE69838767T2

    公开(公告)日:2008-10-23

    申请号:DE69838767

    申请日:1998-02-10

    Applicant: QUALCOMM INC

    Abstract: In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.

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