Method and apparatus for supporting multi-user and single-user MIMO in a wireless communication system

    公开(公告)号:AU2009279485B2

    公开(公告)日:2013-09-26

    申请号:AU2009279485

    申请日:2009-08-07

    Applicant: QUALCOMM INC

    Abstract: Techniques for supporting distributed multiple-input multiple-output (MIMO) transmissions are described. In one design, a user equipment (UE) determines channel estimates for multiple cells and reports the channel estimates. The UE thereafter receives a data transmission sent by the multiple cells to the UE based on the channel estimates. The data transmission may include at least one data stream, and each data stream may be sent by one cell or the multiple cells to the UE. In another design, a UE determines first and second channel estimates for first and second cells, respectively, and reports the channel estimates. The UE then receives a first data transmission sent by the first cell to the UE based on the first channel estimate. The UE also receives a second data transmission sent by the second cell to another UE and steered away from the UE based on the second channel estimate.

    METHOD AND APPARATUS FOR SUPPORTING MULTI-USER AND SINGLE-USER MIMO IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:CA2731510A1

    公开(公告)日:2010-02-11

    申请号:CA2731510

    申请日:2009-08-07

    Applicant: QUALCOMM INC

    Abstract: Techniques for supporting distributed multiple-input multiple-output (MIMO) transmissions are described. In one design, a user equipment (UE) determines channel estimates for multiple cells and reports the channel estimates. The UE thereafter receives a data transmission sent by the multiple cells to the UE based on the channel estimates. The data transmission may include at least one data stream, and each data stream may be sent by one cell or the multiple cells to the UE. In another design, a UE determines first and second channel estimates for first and second cells, respectively, and reports the channel estimates. The UE then receives a first data transmission sent by the first cell to the UE based on the first channel estimate. The UE also receives a second data transmission sent by the second cell to another UE and steered away from the UE based on the second channel estimate.

    Signaling transmission with localized spreading for wireless communication

    公开(公告)号:AU2007294491A1

    公开(公告)日:2008-03-13

    申请号:AU2007294491

    申请日:2007-09-10

    Applicant: QUALCOMM INC

    Abstract: Techniques for transmitting signaling with localized spreading are described. In one design, a transmitter (e.g., a base station) spreads multiple signaling symbols to obtain multiple sets of output symbols and further maps the multiple sets of output symbols to multiple time frequency blocks. The spreading may be localized to each time frequency block. Prior to the spreading, the transmitter may scale the multiple signaling symbols with multiple gains determined based on the transmit power for these signaling symbols. The transmitter may scramble the scaled signaling symbols to obtain scrambled symbols and may spread the scrambled symbols to obtain the multiple sets of output symbols. The transmitter may map each set of output symbols to a respective time frequency block.

    Previsão de desempenho em nível de enlace baseada em rede neural

    公开(公告)号:BR112022003538A2

    公开(公告)日:2022-05-24

    申请号:BR112022003538

    申请日:2020-09-05

    Applicant: QUALCOMM INC

    Abstract: previsão de desempenho em nível de enlace baseada em rede neural. descreve-se métodos, sistemas e dispositivos para comunicações sem fio e que se relacionam com uma estação base para se comunicar com um equipamento de usuário (ue) por um canal. um primeiro dispositivo (por exemplo, a estação base ou o ue) pode usar uma rede neural treinada para estimar uma ou mais métricas de desempenho do enlace associadas com o canal. prever o desempenho em nível de enlace pode incluir a determinação de um ou mais pesos de rede neural associados a um ou mais parâmetros de entrada associados com o canal para estimar as métricas de desempenho de um ou mais enlaces. o primeiro dispositivo pode reportar a realimentação com o segundo dispositivo com base nas métricas estimadas de desempenho do enlace. com base na realimentação, o segundo dispositivo pode adaptar o enlace ajustando parâmetros do canal para melhorar a confiabilidade ou eficácia das transmissões posteriores.

    Técnicas para transmitir en múltiples portadoras de una banda de espectro de radiofrecuencia compartida

    公开(公告)号:ES2895648T3

    公开(公告)日:2022-02-22

    申请号:ES16727055

    申请日:2016-05-19

    Applicant: QUALCOMM INC

    Abstract: Un procedimiento para la comunicación inalámbrica, realizado por un equipo de usuario, UE (115), comprendiendo el procedimiento: monitorizar (905) una pluralidad de portadoras de una banda de espectro de radiofrecuencia, RF, de acuerdo con una configuración de señales de referencia de descubrimiento, DRS, en el que las transmisiones a través de la pluralidad de portadoras están sujetas a un procedimiento de escuchar antes de hablar, LBT; determinar (915) una medición de informes de red que se basa al menos en parte en mediciones de DRS que se transmiten a través de una o más de la pluralidad de portadoras de acuerdo con la configuración de DRS, en el que las DRS se transmiten en los respectivos primeros niveles de potencia de transmisión que se preconfiguran para la pluralidad de portadoras; recibir una transmisión a través de un primer conjunto de portadoras de la pluralidad de portadoras, incluyendo la transmisión señales de referencia específicas de célula, CRS, y/o señales de referencia de información de estado del canal, CSI-RS, que se transmiten en los respectivos segundos niveles de potencia de transmisión, en el que los respectivos segundos niveles de potencia de transmisión dependen del número de portadoras del primer conjunto de portadoras transmitidas de la transmisión y de una potencia de salida máxima; recibir al menos un indicador de relación de tráfico a piloto, TPR, que se asocia con la transmisión; y demodular (935) la transmisión en base, al menos en parte, a los niveles de potencia medidos de la CRS y/o la CSI- RS que se reciben y el al menos un indicador de TPR.

    TECHNIQUES FOR TRANSMITTING ON MULTIPLE CARRIERS OF A SHARED RADIO FREQUENCY SPECTRUM BAND

    公开(公告)号:CA2985375C

    公开(公告)日:2021-06-22

    申请号:CA2985375

    申请日:2016-05-19

    Applicant: QUALCOMM INC

    Abstract: Measurement and demodulation may be impacted by varying transmit power due to varying numbers of carriers in a shared radio frequency (RF) spectrum band. Methods, systems, and devices are described for wireless communication. One method includes monitoring at least one carrier of a RF spectrum band for a first reference signal transmitted in a number of listen-before-talk (LBT) radio frames from a plurality of LBT radio frames associated with the plurality of carriers, where the plurality of LBT radio frames are received at the user equipment (UE) in different sets of at least one carrier of the RF spectrum band at different times, and where the first reference signal is associated with a first fixed transmit power; receiving a plurality of instances of the first reference signal; measuring the plurality of instances; and determining a cell measurement based at least in part on the measurements of the plurality of instances.

    ENHANCED DISCONTINUOUS RECEPTION DESIGN FOR A SHARED FREQUENCY BAND

    公开(公告)号:AU2020203702B2

    公开(公告)日:2021-05-06

    申请号:AU2020203702

    申请日:2020-06-04

    Applicant: QUALCOMM INC

    Abstract: Methods, systems, and devices for wireless communication are described. In one embodiment a method includes configuring, by a base station serving one or more user equipments (UEs) on a cell via a channel of a shared frequency band, a first UE for discontinuous reception (DRX) operation according to a DRX configuration including at least a first paging interval 0 and a second paging interval for a set of paging opportunities; determining whether paging information for the first UE is pending; determining an ability to transmit a page to the first UE during the first paging interval based at least in part on a channel access procedure for the channel; and transmitting the page on the cell based on the determining the ability to transmit the page to the first UE. 105-b 115-c 705 Configuration for DRX operation on the cell 710 Determine whether a page for a UE has been received Determine a next paging interval 720 Check a base station channel capacity ora channel related to aUE 7 Enable reception for a first paging interval 730 DL transmission 735 Page or pending paging indication ------------- -- ----------- 740 Detect whether DL transmission is received ---------- L---------- 745 Extend a first paging interval o |enable reception for a second | paging interval 750 Page or pending paging indication Disable reception for a 755 remainder of set of paging opportunities

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