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    Formato de trama de difusión de tiempo de salida (TOD)
    21.
    发明专利
    Formato de trama de difusión de tiempo de salida (TOD) 未知

    公开(公告)号：ES2788167T3

    公开(公告)日：2020-10-20

    申请号：ES16801905

    申请日：2016-11-02

    Applicant: QUALCOMM INC

    Inventor： ALDANA CARLOS HORACIO ,  ZHANG NING ,  CHO JAMES SIMON ,  ZHANG XIAOXIN

    IPC: G01S5/14 ,  H04W4/02 ,  H04W56/00

    Abstract: Un procedimiento de medición de alcance entre una o más estaciones inalámbricas, STA, y un primer punto de acceso, AP, el procedimiento que comprende: sincronizar un reloj del primer AP con relojes de uno o más AP sincronizados; realizar, mediante el primer AP, una sesión de sincronización con las una o más STA; y emitir, mediante el primer AP a las una o más STA, una o más tramas de difusión de tiempo de salida, TOD, cada una de las tramas de difusión de TOD que incluye un tiempo de salida de una trama de difusión de TOD desde el primer AP.

    Activador de ahorro de energía
    22.
    发明专利
    Activador de ahorro de energía 未知

    公开(公告)号：ES2750822T3

    公开(公告)日：2020-03-27

    申请号：ES16744913

    申请日：2016-05-12

    Applicant: QUALCOMM INC

    Inventor： JIA ZHANFENG ,  CHO JAMES ,  KUMAR SUMEET ,  HOMCHAUDHURI SANDIP ,  O'DONNELL IAN ,  ZHANG NING ,  RAISSINIA ALIREZA

    IPC: H04W52/02 ,  H04W72/12

    Abstract: Un procedimiento para entregar datos de enlace descendente en cola, DL, a una pluralidad de primeros dispositivos inalámbricos, con el procedimiento realizado por un segundo dispositivo inalámbrico y que comprende: determinar (701), para cada uno de la pluralidad de primeros dispositivos inalámbricos, una presencia de un conjunto correspondiente de datos de DL en cola (540(1), 540(2), 540(3)); transmitir (702) una trama de baliza (510) que identifica cuál de la pluralidad de primeros dispositivos inalámbricos tiene datos de DL en cola (540(1), 540(2), 540(3)), con la trama de baliza (510) que indica a cada uno de los primeros dispositivos inalámbricos identificados que transmitan una petición (530(1), 530(2)) para la entrega de los datos de DL en cola (540(1), 540(2), 540(3)) al recibir el permiso (520) del segundo dispositivo inalámbrico; transmitir (703), a cada uno de los primeros dispositivos inalámbricos identificados, permiso (520) para solicitar la entrega de datos de DL en cola (540(1), 540(2), 540(3)); recibir (704), de cada uno de los primeros dispositivos inalámbricos identificados, una petición (530(1), 530(2)) para la entrega de los datos de DL en cola (540(1), 540(2), 540(3)); y transmitir simultáneamente (705), a cada uno de los primeros dispositivos inalámbricos identificados, el conjunto correspondiente de datos de DL en cola (540(1), 540(2), 540(3)).

    SYSTEM AND METHOD FOR TRANSMITTING A LOW DENSITY PARITY CHECK SIGNAL
    25.
    发明专利
    SYSTEM AND METHOD FOR TRANSMITTING A LOW DENSITY PARITY CHECK SIGNAL 未知

    公开(公告)号：MY165716A

    公开(公告)日：2018-04-20

    申请号：MYPI2013000785

    申请日：2011-09-16

    Applicant: QUALCOMM INC

    Inventor： SHI KAI ,  ZHANG NING

    IPC: H03M13/00 ,  H04L5/04 ,  H04L12/16 ,  H04W4/00

    Abstract: A SYSTEM AND METHOD FOR TRANSMITTING LDPC PARAMETERS IS PROVIDED. IN THE METHOD, AN INITIAL NUMBER OF OFDM SYMBOLS (NSYM_INIT) IS DETERMINED FOR A PACKET THAT IS BASED ON THE NUMBER OF INFORMATION BITS TO BE DELIVERED IN THE PACKET. AN STBC VALUE IS ALSO DETERMINED. A NUMBER OF EXTRA SYMBOLS (NSYM_ EXT) VALUE IS GENERATED BASED ON THE NSYM_INIT VALUE, WHEREIN A NSYM VALUE IS BASED ON SAID NSYM_INIT VALUE AND SAID NSYM_EXT VALUE. AN NLDPC EXT VALUE IS DETERMINED BASED ON THE STBC VALUE AND THE NSYM_EXT VALUE FOR PURPOSES OF DETERMINING LDPC PARAMETERS ASSOCIATED WITH THE PACKET.(FIGURE 2)

    SINGLE STREAM PHASE TRACKING DURING CHANNEL ESTIMATION IN A VERY HIGH THROUGHPUT WIRELESS MIMO COMMUNICATION SYSTEM
    27.
    发明专利
    SINGLE STREAM PHASE TRACKING DURING CHANNEL ESTIMATION IN A VERY HIGH THROUGHPUT WIRELESS MIMO COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2807383C

    公开(公告)日：2017-06-13

    申请号：CA2807383

    申请日：2011-08-26

    Applicant: QUALCOMM INC

    Inventor： SHI KAI ,  ZHANG NING

    IPC: H04W24/00 ,  H04B1/04 ,  H04B1/76

    Abstract: In a multiple-input, multiple-output system, the wireless node's receive chain demodulation function is enhanced to include phase tracking. Instead of performing phase tracking during the data symbols which is cumbersome for very high throughput wireless networks, the VHT Long Training Fields (LTFs) embedded in the preamble of a frame are used for phase tracking. Single stream pilot tones are added during the transmission of VHT- LTFs. This is exploited on the receive side to be able to estimate the channel using the pilot tones in the first set of the Long Training Fields. Second set of the Long Training Fields are then used to estimate the phase of the pilot tones using the estimated channel. The phase estimation so obtained is continuously applied to other received data tones throughout the VHT-LTFs of the data symbols. The phase errors due to PLL mismatches and phase noise are reduced at reception, leading to better signal to noise ratio for different levels of parts per million drift and offset in frequency. Further, MIMO channel estimation is more accurate, which improves the overall wireless network when this accurate MIMO channel estimation data participates in calibration and handshake between wireless nodes.

    WIRELESS LOCAL AREA NETWORK THROUGHPUT ESTIMATION
    28.
    发明专利
    WIRELESS LOCAL AREA NETWORK THROUGHPUT ESTIMATION 未知

    公开(公告)号：CA2966636A1

    公开(公告)日：2016-06-16

    申请号：CA2966636

    申请日：2015-12-09

    Applicant: QUALCOMM INC

    Inventor： KIM YOUHAN ,  JIA ZHANFENG ,  KATAR SRINIVAS ,  MALIK RAHUL ,  SUNDARARAJAN JAY KUMAR ,  MEYLAN ARNAUD ,  ZHANG NING ,  CHERIAN GEORGE

    IPC: H04W24/00 ,  H04W48/20

    Abstract: Methods, apparatus, and computer-readable media for wireless communication may involve techniques for throughput estimation. An expected air time parameter may be used as a parameter for estimating throughput. The expected air time parameter may be indicative of an estimated air time fraction obtainable for communications using an access point (AP), for example, between a wireless station (STA) and the AP. Either the expected air time parameter or an estimated air time fraction determined (e.g., calculated) from the expected air time parameter may be transmitted from the AP to the STA (or other communication device) to allow the STA (or other communication device) to determine an estimated throughput for communications using the AP.

    TIME OF ARRIVAL BASED POSITIONING SYSTEM
    29.
    发明专利
    TIME OF ARRIVAL BASED POSITIONING SYSTEM 未知

    公开(公告)号：IN2957CHN2014A

    公开(公告)日：2015-07-03

    申请号：IN2957CHN2014

    申请日：2014-04-17

    Applicant: QUALCOMM INC

    Inventor： ZHANG XIAOXIN ,  ZHANG NING

    IPC: H04W64/00

    Abstract: A TOA positioning system can be implemented that employs a calculated initial location of a wireless network device. For each of a plurality of reference wireless network devices a distance between the wireless network device and the reference wireless network device is determined based at least in part on a round trip transit time between the wireless network device and the reference wireless network device. An initial location of the wireless network device can be calculated based at least in part on a location of each of the plurality of reference wireless network devices. A location of the wireless network device can be estimated based at least in part on the calculated initial location the distance to each of the reference wireless network devices and an initial distance calibration constant.

    TIME OF ARRIVAL BASED WIRELESS POSITIONING SYSTEM
    30.
    发明专利
    TIME OF ARRIVAL BASED WIRELESS POSITIONING SYSTEM 未知

    公开(公告)号：IN2129CHN2014A

    公开(公告)日：2015-05-29

    申请号：IN2129CHN2014

    申请日：2014-03-19

    Applicant: QUALCOMM INC

    Inventor： ZHANG XIAOXIN ,  ZHANG NING

    IPC: G01S5/02 ,  G01S5/14

    Abstract: A TOA positioning system can be implemented to improve location estimation of a wireless network device. A first subset of a plurality of reference wireless network devices for determining potential locations of the wireless network device and a second subset of the plurality of reference wireless network devices for determining an estimated location of the wireless network device can be selected. The first and the second subsets can be selected based on a plurality of distance measurements and an average distance and associated with each of the plurality of reference wireless network devices. The potential locations of the wireless network device can be determined based on the first subset of the plurality of reference wireless network devices. The estimated location of the wireless network device can be determined from the potential locations of the wireless network device based on the second subset of the plurality of reference wireless network devices.

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