SYSTEM AND METHOD FOR BEAM-BASED PHYSICAL RANDOM-ACCESS

    公开(公告)号:SG11201607912QA

    公开(公告)日:2016-10-28

    申请号:SG11201607912Q

    申请日:2014-08-27

    Abstract: A method in a wireless device for performing random access to a network node. The method comprises receiving a set of downlink beam-specific reference signals, BRS, from the network node, and determining a preferred BRS based on the received signal power for each BRS. The method also comprises selecting, based on the preferred BRS, a random-access resource to be used for transmitting a random-access attempt to the network node, as well as using the selected random-access resource when transmitting a random-access attempt to the network node, whereby the selection of random-access resource indicates to the network node which downlink beam is preferred by the wireless device to be used for downlink transmissions.

    System and method for beam-based physical random-access

    公开(公告)号:AU2014388444A1

    公开(公告)日:2016-10-13

    申请号:AU2014388444

    申请日:2014-08-27

    Abstract: A method in a wireless device for performing random access to a network node. The method comprises receiving a set of downlink beam-specific reference signals, BRS, from the network node, and determining a preferred BRS based on the received signal power for each BRS. The method also comprises selecting, based on the preferred BRS, a random-access resource to be used for transmitting a random-access attempt to the network node, as well as using the selected random-access resource when transmitting a random-access attempt to the network node, whereby the selection of random-access resource indicates to the network node which downlink beam is preferred by the wireless device to be used for downlink transmissions.

    ESTIMACION DOPPLER.
    93.
    发明专利

    公开(公告)号:ES2346657T3

    公开(公告)日:2010-10-19

    申请号:ES04806576

    申请日:2004-12-15

    Inventor: SAHLIN HENRIK

    Abstract: Procedimiento de estimación del ensanchamiento Doppler, para su uso en un sistema electrónico que comprende las etapas de estimar un valor con sesgo corregido según la relación **(Ver fórmula)** en la que **(Ver fórmula)** es un ensanchamiento Doppler máximo preliminar, al cuadrado, basado en los parámetros medidos, y en la que K2 se determina según **(Ver fórmula)** donde k es un entero, y donde la estimación preliminar de la frecuencia de ensanchamiento Doppler máximo se basa en los valores de autocorrelación (ry(r)) de las señales recibidas, durante al menos dos retrasos (0, 1).

    94.
    发明专利
    未知

    公开(公告)号:AT470276T

    公开(公告)日:2010-06-15

    申请号:AT04806576

    申请日:2004-12-15

    Inventor: SAHLIN HENRIK

    Abstract: Method of estimating Doppler spread comprising the steps of estimating a de-biased value according to the relation Formula (I), is a preliminary Doppler spread squared, based on measured parameters, and K2 is a constant.

    95.
    发明专利
    未知

    公开(公告)号:SE0102077D0

    公开(公告)日:2001-06-12

    申请号:SE0102077

    申请日:2001-06-12

    Abstract: The present invention relates to a blind detection of a received signal having at least one property, which initially is unknown to the receiver, however, limited to a finite set of alternatives ({p 1 , p 2 , . . . , p m }). According to the invention, the unknown property is automatically identified as follows. A respective quality measure (q 1 , q 2 , . . . , q m ) is derived from the incoming signal (r(n)), which each represents a particular property in the finite set of alternatives ({p 1 , p 2 , . . . , p m }). The quality measures (q 1 , q 2 , . . . , q m ) are obtained according to a procedure that involves a computationally efficient rejection of any unwanted signal components in the incoming signal (r(n)). Then, the quality measures (q 1 , q 2 , . . . , q m ) are compared with each other in order to find a quality measure, which best fulfills a blind selection criterion. The quality measure (q i ) thus obtained corresponds to the initially unknown property (p i ). For instance, based on this information, the incoming signal (r(n)) may then be further processed in a processing unit ( 122 ), which operates according to a processing principle (C di ) that is adapted to this property (p i ).

    Asignación de ranuras de preámbulo de acceso aleatorio

    公开(公告)号:ES2911557T3

    公开(公告)日:2022-05-19

    申请号:ES17823243

    申请日:2017-12-20

    Abstract: Un método (500), en un dispositivo inalámbrico (50), para transmitir un preámbulo de acceso aleatorio, comprendiendo el método (500): seleccionar (502) una configuración de preámbulo de acceso aleatorio de entre una pluralidad de configuraciones predeterminadas de preámbulo de acceso aleatorio; determinar (504) un intervalo de tiempo en el que transmitir el preámbulo de acceso aleatorio; y transmitir (506) el preámbulo de acceso aleatorio según la configuración de preámbulo de acceso aleatorio seleccionada; caracterizado por que cada una de la pluralidad de configuraciones de preámbulo de acceso aleatorio comprende una combinación de (a) una sola secuencia de raíz de un conjunto predeterminado de una o más secuencias de raíz, (b) un solo desplazamiento cíclico de entre una pluralidad predeterminada de desplazamientos cíclicos para la secuencia de raíz, y (c) una sola posición de inicio de entre dos o más posiciones de inicio predeterminadas dentro de cada intervalo de tiempo asignado para la transmisión del preámbulo de acceso aleatorio.

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