Hybrid digital-analog modulation for transmission of video data

    公开(公告)号:US11553184B2

    公开(公告)日:2023-01-10

    申请号:US17137068

    申请日:2020-12-29

    Abstract: A method for encoding video data comprises generating coefficients based on video data; generating coefficient vectors, wherein each of the coefficient vectors includes n of the coefficients; for each of the coefficient vectors, determining an amplitude value for the coefficient vector based on a mapping pattern, wherein for each respective allowed coefficient vector in a plurality of allowed coefficient vectors: the mapping pattern maps the respective allowed coefficient vector to a respective amplitude value in a plurality of amplitude values, and the respective amplitude value is adjacent in an n-dimensional space to at least one other amplitude value in the plurality of amplitude values that is adjacent to the respective amplitude value in a monotonic number line of the amplitude values; and modulating an analog signal based on the amplitude values for the coefficient vectors.

    Hybrid automatic repeat request (HARQ) techniques for reducing peak-to-average power ratio (PAPR)

    公开(公告)号:US11539565B2

    公开(公告)日:2022-12-27

    申请号:US17153315

    申请日:2021-01-20

    Abstract: This disclosure provides methods, devices and systems for reducing PAPR in wireless communications. Some implementations more specifically relate to suppressing the amplitudes of a data signal that exceed a threshold amplitude level. The data signal may represent transmit (TX) data associated with a hybrid automatic repeat request (HARQ) process. In some implementations, a transmitting device may detect one or more peaks associated with the data signal. The transmitting device may reduce the amplitudes of the samples associated with the detected peaks to produce the amplitude-suppressed data signal. The transmitting device may further generate peak suppression information indicating the amplitudes of one or more of the samples associated with the peaks. In response to receiving a NACK message, the transmitting device may transmit, to the receiving device, the peak suppression information, one or more coded bits representing the TX data (associated with the HARQ process), or any combination thereof.

    Beam failure reporting using data field in uplink control channel

    公开(公告)号:US11509380B2

    公开(公告)日:2022-11-22

    申请号:US17118490

    申请日:2020-12-10

    Abstract: Methods, systems, and devices for wireless communications are described. Some wireless communications networks may support carrier aggregation such that a user equipment (UE) may operate on both a primary cell using a first frequency range and a secondary cell using a second frequency range. In some cases, a beam failure associated with one or more beams of the secondary cell may be identified by the UE, and a beam failure recovery procedure may be triggered. The UE may send a beam failure recovery request message in an uplink data field of a physical uplink control channel (PUCCH) message to a base station of the primary cell. In response to the beam failure recovery request message, the base station of the primary cell may transmit a response to the UE which includes beam failure mitigation information.

    Configurable deflection measurement and reporting

    公开(公告)号:US11483037B2

    公开(公告)日:2022-10-25

    申请号:US17475156

    申请日:2021-09-14

    Abstract: Methods, systems, and devices for wireless communications are described. A channel engineering device may receive control signaling that triggers the channel engineering device to perform one or more angle of arrival (AoA) measurements on one or more reference signals and transmit an AoA measurement report based on the AoA measurements. The base station may process the AoA measurement report and send a control message that configures one or more settings at the channel engineering device. The base station may determine a beam shaping configuration that modifies the one or more settings at the channel engineering device to reflect, focus, refract, or filter signal energy of a transmission by the base station toward a user equipment (UE), a transmission by the UE toward the base station, or both. The base station and one or more UEs may communicate using the channel engineering device based on the beam shaping configuration.

    Peak suppression information multiplexing on uplink shared channel

    公开(公告)号:US11424897B2

    公开(公告)日:2022-08-23

    申请号:US17031006

    申请日:2020-09-24

    Abstract: A user equipment (UE) may multiplex peak suppression information message (PSIM) on a physical uplink shared channel (PUSCH) with data for efficient implementation of PSIMs for peak to average power ratio (PAPR) reduction. A UE may clip peaks from a signal to be transmitted and capture information of the clipped peaks into a PSIM. The UE may then multiplex the PSIM on the PUSCH such that a receiving device (for example, a base station) may receive the signal and reconstruct the signal (for example, PUSCH data) using the PSIM. According to some aspects, each PUSCH symbol may include a PSIM for a previous PUSCH symbol (for example, such that causality is preserved if multiplexing PSIM and data for each PUSCH symbol). Various aspects of the techniques described herein may further provide for PSIM positioning in frequency, PSIM modulation, PSIM channel coding, PSIM multiple-input multiple-output (MIMO) configurations, among other examples.

    BEAM REFINEMENT WITH SIMULTANEOUS SPATIAL-DIVISION MULTIPLEXED BEAMS

    公开(公告)号:US20220248246A1

    公开(公告)日:2022-08-04

    申请号:US17248709

    申请日:2021-02-03

    Abstract: Wireless communications systems and methods related to beam refinement with simultaneous spatial-division multiplexed beams are provided. A user equipment (UE) receives, from a base station (BS), a plurality of reference signals in a set of beam directions. The receiving includes receiving, simultaneously during a first symbol, at least a first reference signal of the plurality of reference signals in a first beam direction of the set of beam directions and a second reference signal of the plurality of reference signals in a second beam direction of the set of beam directions, where the second beam direction is different from the first beam direction. The UE transmits, to the BS, a beam report indicating received signal measurements for two or more beam directions of the set of beam directions.

    HYBRID DIGITAL-ANALOG MODULATION FOR TRANSMISSION OF VIDEO DATA

    公开(公告)号:US20220210425A1

    公开(公告)日:2022-06-30

    申请号:US17137068

    申请日:2020-12-29

    Abstract: A method for encoding video data comprises generating coefficients based on video data; generating coefficient vectors, wherein each of the coefficient vectors includes n of the coefficients; for each of the coefficient vectors, determining an amplitude value for the coefficient vector based on a mapping pattern, wherein for each respective allowed coefficient vector in a plurality of allowed coefficient vectors: the mapping pattern maps the respective allowed coefficient vector to a respective amplitude value in a plurality of amplitude values, and the respective amplitude value is adjacent in an n-dimensional space to at least one other amplitude value in the plurality of amplitude values that is adjacent to the respective amplitude value in a monotonic number line of the amplitude values; and modulating an analog signal based on the amplitude values for the coefficient vectors.

    Data-aided beam management
    68.
    发明授权

    公开(公告)号:US11363471B2

    公开(公告)日:2022-06-14

    申请号:US17064500

    申请日:2020-10-06

    Abstract: Methods, systems, and devices for wireless communications are described. Beam management procedures may increase communications quality and reliability in wireless networks that support narrow directional beams and high frequencies. Some such beam management procedures utilize continuous beam measurements and adaptive beam switching to maintain a threshold link level between devices. A user equipment (UE) may transmit an indication of a capability to perform a first beam refinement procedure in response to a data transmission and using multiple receive beams. The UE may select a communication beam using a first instance of a second beam refinement procedure, and may receive a data transmission from a base station using the selected beam. Based on receiving the data transmission, the UE may perform the first beam refinement procedure and may skip a second instance of the second beam refinement procedure.

    APERIODIC RANDOM ACCESS PROCEDURES
    69.
    发明申请

    公开(公告)号:US20220141875A1

    公开(公告)日:2022-05-05

    申请号:US17084842

    申请日:2020-10-30

    Abstract: Methods, systems, and devices for wireless communications are described to support scheduling aperiodic random access occasion resources. The aperiodic random access occasion resources may be dynamically scheduled by a primary secondary cell (PSCell) associated with a base station. When performing a random access procedure for the PSCell, the base station may initiate the random access procedure via an order transmitted to a user equipment (UE). The order may represent a unicast transmission addressed to the UE and may indicate for the UE to transmit a preamble to begin the random access procedure. The order may also indicate resources (e.g., an offset of time resources) and a preamble index for transmission of the preamble. The UE may receive the order and may transmit the preamble based on the information included in the order.

    REFERENCE SIGNAL TRANSMISSIONS FOR MULTI-BEAM OPERATION

    公开(公告)号:US20220141675A1

    公开(公告)日:2022-05-05

    申请号:US17090845

    申请日:2020-11-05

    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for using a same antenna port to transmit or receive reference signals on different beams. A network may determine different directional beams to use to transmit different data streams, and the network may transmit each data stream using a different directional beam. The network may also transmit reference signals with the different data streams using a same antenna port, and a user equipment (UE) may receive the reference signals with the different data streams using a same antenna port. Because a same antenna port may be used for transmitting or receiving reference signals with different data streams, the reference signals may occupy the same time and frequency resources, and the overhead of reference signal transmissions may be minimized.

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