POWER-EFFICIENT MULTI-ANTENNA WIRELESS DEVICE

    公开(公告)号:CA2566329C

    公开(公告)日:2015-05-19

    申请号:CA2566329

    申请日:2005-04-29

    Applicant: QUALCOMM INC

    Abstract: A power-efficient wireless device is equipped with multiple (N) antennas. Each antenna is associated with a transmitter unit and a receiver unit. The wireless device also has processing units used to perform various digital processing tasks. The transmitter units, receiver units, and processing units may be selectively enabled or disabled. In an idle state, the wireless device may enable only a subset (e.g., one) of the N receiver units and one or few processing units for signal detection and acquisition. For active communication, the wireless device may enable Ntx transmitter units for data transmission and/or Nrx receiver units for data reception, where 1

    Procedimiento y aparato de operación de un sistema de comunicación de varios canales

    公开(公告)号:ES2431796T3

    公开(公告)日:2013-11-28

    申请号:ES09008576

    申请日:1997-12-19

    Applicant: QUALCOMM INC

    Abstract: Un procedimiento de operación de un sistema de comunicación de múltiples canales que utiliza procesamientode señal de espectro ensanchado de secuencia directa que comprende: a) generar una fuente de datos complejos que tiene un término multicanal y un término de canal de tasa detransmisión elevada; en el que dicha etapa de generación comprende las siguientes subetapas: a1) generar un conjunto de canales de tasa de transmisión media en respuesta a un conjunto de fuentes dedatos de tasa de transmisión media y un conjunto de códigos de canal largos; a2) generar dicho término multicanal sumando el conjunto de canales de tasa de transmisión media; a3) generar dicho término canal de alta velocidad en respuesta a una fuente de datos de tasa detransmisión elevada y un código de canal corto b) generar un código de ensanchamiento complejo que tiene un término en fase y un término en cuadratura defase; c) multiplicar de manera compleja dicha fuente de datos complejos y dicho código de ensanchamientocomplejo para obtener un término real y un término imaginario; d) modular dicho término real con una portadora en fase; y e) modular dicho término imaginario con una portadora en cuadratura de fase.

    105.
    发明专利
    未知

    公开(公告)号:DE60231376D1

    公开(公告)日:2009-04-16

    申请号:DE60231376

    申请日:2002-01-18

    Applicant: QUALCOMM INC

    Abstract: A method and apparatus for a variable mode multi-media data object storage device. Large digital objects can be quickly downloaded in approximately a minute. The digital objects can be utilized or played back at real-time speeds. Utilization or playback consumes minimal power, allowing the disk to support portable devices operating on battery power. The storage device uses multiple disk rotation speeds to support multiple modes of operation. The storage device operates in at least two modes of disk drive operation, supporting a fast platter rotation speed for writing and a slower platter rotation speed for reading. The multiple rotation speeds operate in conjunction with a head assembly configured with at least one head for reading and multiple heads for writing. When writing, the disk spins at the faster rotation speed. When in utilization or playback mode, the disk spins at the slower, power conserving rotation speed.

    METHOD AND APPARATUS FOR AUTOMATIC EVENT DETECTION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:CA2309929C

    公开(公告)日:2008-05-20

    申请号:CA2309929

    申请日:1999-09-15

    Applicant: QUALCOMM INC

    Abstract: Apparatus and method for determining when a vehicle (108) has arrived or departed from a planned or an unplanned stop, while minimizing or completely eliminating driver intervention. The apparatus comprises a mobile communication terminal (202) located onboard a vehicle (108) for receiving destination information, generally using wireless means, from a central facility or hub (104). A speedometer (210) also located onboard the vehicle (108) determines the speed of the vehicle and a position sensor (212) onboard the vehicle (108) determines the vehicle position. The vehicle speed and position are provided to a processor (206), also located onboard the vehicle (108), which uses the speed and position information to determine a vehicle arrival or departure from a planned or unplanned stop. The processor (206) generates an indication of the event, either arrival or departure, directly to the central facility (104), to the vehicle operator, or both.

    AN APPARATUS FOR CONDUCTING WIRELESS COMMUNICATIONS

    公开(公告)号:HK1106883A1

    公开(公告)日:2008-03-20

    申请号:HK07112327

    申请日:2007-11-12

    Applicant: QUALCOMM INC

    Abstract: A method and apparatus for transmitting voice and data in a code division multiple access (CDMA) wireless telecommunications system is described. In an exemplary embodiment of the invention, a base station transmits voice information at a voice transmit power and data at a data transmit power that is equal to a maximum transmit power minus the voice transmit power. In a preferred embodiment of the invention, each base station reports the voice transmit power to a base station controller in 20 ms intervals. The base station controller responds by calculating an available data transmit capacity, and by forwarding data to each base station equal to the available data transmit capacity. Each base station then transmits all voice data at the current voice transmit power, and data at the current data transmission power. If the amount of data received exceeds the capacity provided by the current data transmission power, some data is not transmitted. The base station then notifies the base station controller if data was not transmitted, and the base station controller attempts to retransmit the data at a later time.

    PROCEDIMIENTO Y SISTEMA PARA REALIZAR COMUNICACIONES INALAMBRICAS.

    公开(公告)号:ES2290988T3

    公开(公告)日:2008-02-16

    申请号:ES98932828

    申请日:1998-06-24

    Applicant: QUALCOMM INC

    Abstract: Un sistema para realizar comunicaciones inalámbricas que comprende: un medio de generación de un conjunto de tramas de datos y un conjunto de tramas de voz; y una estación base para transmitir dicho conjunto de tramas de voz a una potencia de transmisión de voz que varía y para transmitir al menos una parte de dichas tramas de datos a una potencia de transmisión de datos si está disponible una potencia de transmisión adicional; caracterizado porque la potencia de transmisión de datos es la potencia de transmisión máxima de la estación base menos la potencia de transmisión de voz calculada para un instante anterior único de tiempo, y la parte de dichas tramas de datos se transmite sin interferir con la transmisión de dicho conjunto de tramas de voz.

    110.
    发明专利
    未知

    公开(公告)号:AT340444T

    公开(公告)日:2006-10-15

    申请号:AT97921215

    申请日:1997-04-15

    Applicant: QUALCOMM INC

    Abstract: A system and method for reducing radio frequency interference arising in connection with pulsed transmission over time division multiplexed communication channels. In a first embodiment, a subscriber station is nominally assigned all of the slots of each frame of a first transmit channel. By transmitting RF energy substantially continuously, the subscriber station reduces interference arising from pulsed transmission. In a second embodiment, a subscriber station is nominally assigned one or more slots of each frame of a primary channel for conventional transmission of useful information, and is also instructed to continuously transmit RF energy over an auxiliary channel at times other than during the assigned primary channel slots. In this way, interference generated in the vicinity of the subscriber station is reduced due to the substantially continuous transmission of RF energy by the subscriber station. More than one subscriber station may simultaneously utilize the auxiliary channel during reduced interference mode operation.

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