METODO Y APARATO PARA CONTROL DE ENLACE EN COMUNICACIONES INALAMBRICAS.

    公开(公告)号:MXPA06014835A

    公开(公告)日:2007-03-21

    申请号:MXPA06014835

    申请日:2005-06-14

    Applicant: QUALCOMM INC

    Abstract: Se describen metodos y sistemas para uso en un sistema de comunicacion 200 para retrasar selectivamente la transmision de un segundo reconocimiento negativo (NAK) despues que un NAK inicial ha sido enviado solicitando la retransmision de un paquete corrompido; la entidad de recepcion 210 inicia un temporizador de prohibicion de NAK 641 asociado con un NAK especifico 631 el cual evita que los reportes de estado a la entidad de transmision 220 incluyan una retrasmision del NAK especifico hasta que vence el temporizador; el uso del temporizador de prohibicion de NAK 641 reduce la probabilidad de transmisiones falsas provenientes de la entidad de transmision 220 causadas por un segundo NAK de la entidad de recepcion 210 cuando el proceso de retransmision ya ha iniciado.

    Method and apparatus for estimating velocity of a terminal in a wireless communication system

    公开(公告)号:AU2002245171B2

    公开(公告)日:2006-04-13

    申请号:AU2002245171

    申请日:2001-10-29

    Applicant: QUALCOMM INC

    Abstract: Techniques to estimate the velocity of a terminal in a wireless communication system. Movement by the terminal results in a Doppler shift in the frequency of each transmitted signal received at the terminal. In one method, the positions of the terminal, a base station, and each of two or more satellites are initially determined. A residual rate of a change of pseudo-range may also be determined for each satellite, e.g., based on (1) an estimated baseband frequency error that includes the Doppler frequency shift due to the terminal's movement and (2) an estimated Doppler frequency shift due to movement by the satellite. A set of equations is then formed based on the determined positions of the terminal, the base station, and the satellites and the determined residual rates of change of pseudo-ranges for the satellites. The velocity of the terminal may thereafter be estimated based on the set of equations.

    METHOD AND APPARATUS FOR LINK CONTROL IN WIRELESS COMMUNICATIONS

    公开(公告)号:CA2570869A1

    公开(公告)日:2006-01-26

    申请号:CA2570869

    申请日:2005-06-14

    Applicant: QUALCOMM INC

    Abstract: Methods and Systems are disclosed for use in a communication system 200 to selectively delay transmitting a second negative acknowledgement (NAK) after an initial NAK has already been sent requesting retransmission of a corrupted packet. The receiving entity 210 initiates a NAK prohibit timer 641 associated with a specific NAK 631 which prevents status reports to transmitting entity 220 from including a retransmission of the specific NAK until the timer expires. Use of the NAK prohibit timer 641 reduces the likelihood of spurious retransmissions from the transmitting entity 220 caused by a second NAK from the receiving entity 210 when the retransmission process has already been initiated.

    METHOD AND APPARATUS FOR PROVIDING ACCURATE POSITION ESTIMATES IN INSTANCES ; OF SEVERE DILUTION OF PRECISION

    公开(公告)号:HK1076512A1

    公开(公告)日:2006-01-20

    申请号:HK05108326

    申请日:2005-09-22

    Applicant: QUALCOMM INC

    Abstract: Techniques for providing an improved position estimate for a device in instances of relatively large dilution of precision. In a method, position estimates for a number of transmitters (e.g., GPS satellites and/or base stations) and a set of initial measurements (e.g., pseudo-ranges) are initially received. An Update Vector for a current device position estimate is computed. Non-convergence of the current device position estimate toward a target position estimate is detected and, if true, the Update Vector is adjusted (e.g., reduced in magnitude by a scaling factor) to increase the likelihood of convergence to the target position estimate. The current device position estimate is then updated based on the (possibly adjusted) Update Vector. Non-convergence may be detected based on the number of iterations performed without reaching the target position estimate and/or phase reversal in two consecutive Update Vectors. The scaling factor may be increased with each detected event indicative of non-convergence.

    15.
    发明专利
    未知

    公开(公告)号:BR0210945A

    公开(公告)日:2004-08-31

    申请号:BR0210945

    申请日:2002-07-09

    Applicant: QUALCOMM INC

    Abstract: Techniques to time-share a common channelization code among multiple terminals for compressed mode transmissions. Each terminal is initially assigned a respective channelization code used to channelize data transmitted in non-compressed frames for the terminal. A common channelization code used to channelize data transmitted in compressed frames for the terminals is also selected. Each compressed frame includes one or more compressed transmissions and all or a portion of a transmission gap. The compressed frames for the terminals are scheduled such that the compressed transmissions for the compressed frames do not overlap. Thereafter, non-compressed frames for each terminal are channelized with the channelization code assigned to the terminal, and compressed frames for the terminals are channelized with the common channelization code. The compressed frames may be scheduled to be (1) non-overlapping at their frame boundaries, (2) non-overlaping with respect to the compressed transmissions, and/or (3) interlaced.

    Configuraciones predeterminadas con codificación diferencial en un sistema de comunicación inalámbrica

    公开(公告)号:ES2658831T3

    公开(公告)日:2018-03-12

    申请号:ES10196627

    申请日:2005-08-11

    Applicant: QUALCOMM INC

    Abstract: Un aparato que comprende: una memoria (822) configurada para almacenar un conjunto de configuraciones predeterminadas, estando asociada cada configuración predeterminada con un conjunto respectivo de valores de parámetros para usar para una comunicación; y un procesador (810) configurado para seleccionar una configuración que se va a usar para una comunicación con un dispositivo inalámbrico, para averiguar unas diferencias, si las hubiera, entre la configuración seleccionada y una configuración predeterminada, determinándose que la configuración predeterminada de entre el conjunto de configuraciones predeterminadas guarda la mayor coincidencia con la configuración seleccionada del conjunto de configuraciones predeterminadas, y para enviar tanto una identidad para la configuración predeterminada como las diferencias, si las hubiera, para transferir la configuración seleccionada.

    17.
    发明专利
    未知

    公开(公告)号:AT493855T

    公开(公告)日:2011-01-15

    申请号:AT05786583

    申请日:2005-08-11

    Applicant: QUALCOMM INC

    Abstract: Techniques for efficiently configuring and reconfiguring calls using a set of default configurations and differential encoding are described. At the network side, a configuration to use for communication with a wireless device is initially selected. A default configuration is identified from among a set of default configurations. The differences, if any, between the selected configuration and the default configuration are ascertained. An identity for the default configuration and the differences, if any, are sent to the wireless device to convey the selected configuration. At the wireless device, the message containing the identity for the default configuration is initially received. The default configuration is obtained from a memory based on the identity. A determination is made whether the message contains differences between the default configuration and the selected configuration. Values for the default configuration are replaced with the differences, if any, sent in the message.

    18.
    发明专利
    未知

    公开(公告)号:DE60323987D1

    公开(公告)日:2008-11-20

    申请号:DE60323987

    申请日:2003-08-19

    Applicant: QUALCOMM INC

    Abstract: Systems and techniques are disclosed relating to communications. The systems and techniques involve transmitting to a remote location a first signal at a first energy level followed by a second signal at a second energy level, determining a target transmission energy level as a function of a target quality parameter at the remote location, and computing the second energy level as a function of the target transmission energy level and the first energy level. It is emphasized that this abstract is provided solely to assist a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

    19.
    发明专利
    未知

    公开(公告)号:AT410848T

    公开(公告)日:2008-10-15

    申请号:AT03788687

    申请日:2003-08-19

    Applicant: QUALCOMM INC

    Abstract: Systems and techniques are disclosed relating to communications. The systems and techniques involve transmitting to a remote location a first signal at a first energy level followed by a second signal at a second energy level, determining a target transmission energy level as a function of a target quality parameter at the remote location, and computing the second energy level as a function of the target transmission energy level and the first energy level. It is emphasized that this abstract is provided solely to assist a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

    ENERGY RETRANSMISSION MINIMISING METHOD AND APPARATUS THEREOF IN ARQ COMMUNICATIONS

    公开(公告)号:AU2003265603A1

    公开(公告)日:2004-03-03

    申请号:AU2003265603

    申请日:2003-08-19

    Applicant: QUALCOMM INC

    Abstract: Systems and techniques are disclosed relating to communications. The systems and techniques involve transmitting to a remote location a first signal at a first energy level followed by a second signal at a second energy level, determining a target transmission energy level as a function of a target quality parameter at the remote location, and computing the second energy level as a function of the target transmission energy level and the first energy level. It is emphasized that this abstract is provided solely to assist a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

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