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    PROCEDIMIENTO Y APARATOS PARA CONTROLAR LA POTENCIA DE TRANSMISION DURANTE UNA TRANSFERENCIA DE LLAMADA SUAVE.
    143.
    发明专利
    PROCEDIMIENTO Y APARATOS PARA CONTROLAR LA POTENCIA DE TRANSMISION DURANTE UNA TRANSFERENCIA DE LLAMADA SUAVE. 未知

    公开(公告)号：ES2360848T3

    公开(公告)日：2011-06-09

    申请号：ES99961920

    申请日：1999-12-02

    Applicant: QUALCOMM INC

    Inventor： CHEN TAO ,  HOLTZMAN JACK ,  RAZOUMOV LEONID ,  PATEL SHIMMAN ,  SAINTS KEITH ,  TIEDEMANN EDWARD

    IPC: H04W52/40 ,  H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04L1/06

    Abstract: Un sistema de comunicaciones móviles, que comprende: una primera estación base (4) para transmitir y recibir (20, 26), respectivamente, una señal de enlace directo y una señal de enlace inverso procedente de una estación móvil (8), y para generar (24) un primer mensaje de potencia de transmisión para determinar un nivel de potencia de transmisión de dicha señal de enlace directo; una segunda estación base (6) para transmitir (32) una versión redundante de dicha señal de enlace directo a dicha estación móvil (8) y para recibir (38) dicha señal de enlace inverso procedente de dicha estación móvil, y para generar (36) un segundo mensaje de potencia de transmisión para determinar el nivel de potencia de transmisión de dicha versión redundante de dicha señal de enlace directo; un controlador centralizado (2) para recibir (10) dichos mensajes primero y segundo de potencia de transmisión, y para enviar (12, 14, 16) una instrucción de control de potencia alineada a dicha primera estación base y a dicha segunda estación base, en el que dicha primera estación base y dicha segunda estación base están en comunicación simultáneamente con dicha estación móvil, en el que dicha instrucción de control de potencia alineada es para producir patrones alineados de ajustes de control de potencia en dichas estaciones base primera y segunda para transmisiones de dicha señal de enlace directo procedente de dicha primera estación base y dicha versión redundante de dicho enlace directo desde dicha segunda estación base hasta dicha estación móvil, y en el que el controlador centralizado solo envía la instrucción de control de potencia alineada si los niveles de potencia indicados por los mensajes primero y segundo de potencia de transmisión divergen en más de un umbral de divergencia.

    METHOD AND APPARATUS FOR LINK QUALITY FEEDBACK IN A WIRELESS COMMUNICATION
    144.
    发明专利
    METHOD AND APPARATUS FOR LINK QUALITY FEEDBACK IN A WIRELESS COMMUNICATION 未知

    公开(公告)号：CA2438440C

    公开(公告)日：2011-04-19

    申请号：CA2438440

    申请日：2002-01-23

    Applicant: QUALCOMM INC

    Inventor： LUNDBY STEIN A ,  RAZOUMOV LEONID

    IPC: H04B7/005 ,  H04B7/26 ,  H04B17/00 ,  H04W52/08 ,  H04W52/22 ,  H04W52/24 ,  H04W52/60

    Abstract: Method and apparatus for providing link quality feedback to a transmitter (32, 34). In one embodiment, a periodic link quality message is transmitted on a gated channel, while continuous differential indicators are transmitted. Between quality messages, the differential indicators track the quality of the link. The periodic quality messages provide synchronization to the transmitter and receiver (36, 38). A coding is applied to the feedback information identifying the transmitter. In one embodiment, a remote station includes a differential analyzer (212) to determine the change in successive channel quality measurements. In an alternate embodiment, link quality feedback information is gated according to channel condition.

    147.
    发明专利
    未知

    公开(公告)号：AT471643T

    公开(公告)日：2010-07-15

    申请号：AT00967333

    申请日：2000-10-07

    Applicant: QUALCOMM INC

    Inventor： RAZOUMOV LEONID ,  HOLTZMAN JACK ,  LUNDBY STEIN

    IPC: H04L1/00 ,  H04W52/02 ,  H04B7/005 ,  H04B7/26 ,  H04L1/16 ,  H04L1/18

    Abstract: Method and apparatus for transmitting a signal at a predetermined level of reliability using retransmission of erroneously transmitted frames so as to minimize total transmission energy. The transmitting station evaluates the frame error rate (FER) as a function of energy. Next, the transmitting station determines a combination of initial transmission energies and retransmission energies that will provide the target level of reliability while minimizing the total transmission energy employed in the initial transmission and the retransmissions. The transmitting station transmits a frame with an initial transmission energy. Employing conventional feedback methods the transmitting station is alerted to the occurrence of frame errors at the receiving station. The transmitting station upon notification of a frame error retransmits the frame with an energy determined to minimize the total energy required to transmit the frame with a predetermined level of reliability.

    148.
    发明专利
    未知

    公开(公告)号：NO326184B1

    公开(公告)日：2008-10-13

    申请号：NO20016408

    申请日：2001-12-28

    Applicant: QUALCOMM INC

    Inventor： LUNDBY STEIN A ,  RAZOUMOV LEONID

    IPC: H04B7/005 ,  H04B7/06 ,  H04B7/26

    Abstract: The present invention is a novel and improved method and apparatus for control transmission energy. The present invention describes a closed loop power control system that operates in conjunction with a transmitter using orthogonal transmit diversity. In a first embodiment of the present invention, the receiver evaluates the signal to noise ratio (SNR) of the two components of the signal. A weighted sum of these two components emphasizing the weaker of the two signals is generated and used in the generation of the power control commands. In a second embodiment of the present invention, the SNR of the two component signals are calculated and two separate power control commands are generated based on a corresponding one of the calculated SNR values.

    149.
    发明专利
    未知

    公开(公告)号：DE60039678D1

    公开(公告)日：2008-09-11

    申请号：DE60039678

    申请日：2000-01-28

    Applicant: QUALCOMM INC

    Inventor： HOLTZMAN JACK M ,  CHEN TAO ,  RAZOUMOV LEONID

    IPC: H04B7/005 ,  H04B7/26

    Abstract: Method and apparatus for controlling transmission power in a closed loop power control system, wherein power control commands are based on the energy of the previous power control commands. In one embodiment, the method compares changes in the received energy of received power control commands against expected changes in those commands based on previously transmitted power control commands, and identifies suspicious responses to said previously transmitted power control commands. Hypothesis testing of the received power control commands is performed accordance any identified suspicious responses.

    Method and apparatus for link quality feedback in a wireless communication
    150.
    发明专利
    Method and apparatus for link quality feedback in a wireless communication 未知

    公开(公告)号：AU2006252253B2

    公开(公告)日：2008-04-10

    申请号：AU2006252253

    申请日：2006-12-22

    Applicant: QUALCOMM INC

    Inventor： WU QIANG ,  LUNDBY STEIN A ,  RAZOUMOV LEONID

    IPC: H04B7/005 ,  H04B7/26 ,  H04B17/00 ,  H04W52/08 ,  H04W52/22 ,  H04W52/24 ,  H04W52/60

    Abstract: Method and apparatus for providing link quality feedback to a transmitter (32,34). In one embodiment, a periodic link quality message is transmitted on a gated channel, while continuous differential indicators are transmitted. Between quality messages, the differential indicators track the quality of the link. In one embodiment, a remote station includes a differential analyzer (212) to determine the change in successive channel quality measurements. The quality metric and the differential indicator are used for providing power control commands and rate control commands to teh base station. The quality metric and the differential indicator are transmitted at two different frequencies.

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