Lens antenna array with beam index modulation

    公开(公告)号:US11606131B2

    公开(公告)日:2023-03-14

    申请号:US17376819

    申请日:2021-07-15

    Abstract: A lens antenna array system is provided that includes a plurality of communication links. The lens antenna array system uses beam index modulation to select an active subset of communication links from the plurality of communication links. The selection of the active subset of the communication links constitutes the transmission of a digital word.

    Iterative reference signal symbol reconstruction and channel estimation

    公开(公告)号:US11563615B2

    公开(公告)日:2023-01-24

    申请号:US17211557

    申请日:2021-03-24

    Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device (e.g., a user equipment (UE) or base station) may reduce a peak to average power ratio (PAPR) by clipping signals transmitted to a receiving device according to a clipping level. The receiving device may receive, from the transmitting device, an indication of the clipping level associated with a reference signal. The receiving device may receive the reference signal and identify distortions based on the clipping level. The receiving device may iteratively reconstruct peaks of the clipped reference signal until the receiving device is able to obtain accurate pilot symbols for use in channel estimation. The techniques described herein may enable receiving devices to improve efficiency and reliability of communications by improving channel estimation, which may increase the probability of successfully decoding transmitted information.

    DEMODULATOR CONFIGURATION BASED ON USER EQUIPMENT SIGNALING

    公开(公告)号:US20220416993A1

    公开(公告)日:2022-12-29

    申请号:US17356108

    申请日:2021-06-23

    Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit an indication of a demodulator configuration to a user equipment (UE) for the UE to use that demodulator configuration for demodulating a multi-layer transmission from the base station. The base station may determine the demodulator configuration for the UE to use based on one or more uplink signals transmitted from the UE. Additionally, the UE may transmit an indication of demodulator capabilities that the UE supports to the base station, where the base station determines the demodulator configuration based on the indication of the demodulator capabilities. In some examples, the demodulator configuration may indicate a demodulation search space corresponding to a number of layers included per layer group of the multi-layer transmission, may correspond to an amount of cross correlation determined between respective layers of the multi-layer transmission, or a combination thereof.

    Dynamic cyclic prefix selection
    285.
    发明授权

    公开(公告)号:US11528757B2

    公开(公告)日:2022-12-13

    申请号:US17085759

    申请日:2020-10-30

    Abstract: Methods, systems, and devices for wireless communications are described for reducing overhead associated with a cyclic prefix (CP) by supporting dynamic determination of a CP length. For example, a user equipment (UE) may establish a wireless connection with a base station by receiving initial communications according to a numerology and a first CP configuration associated with a first CP length. The UE may determine a second CP length after establishing the wireless connection and may transmit an indication to the base station, indicating the second CP length. The base station may receive the indication and may transmit downlink signals according to a second CP configuration associated with the second CP length. The initial communications and the downlink signals may be associated with a same numerology or subcarrier spacing.

    MODULATED DOWNLINK REFERENCE SIGNAL FOR LOW POWER OPERATIONS

    公开(公告)号:US20220385507A1

    公开(公告)日:2022-12-01

    申请号:US17334026

    申请日:2021-05-28

    Abstract: Methods, systems, and devices for wireless communication are described. A communication device may receive control signaling indicating a downlink reference signal configuration, for example, a demodulation reference signal (DMRS) configuration. The communication device may receive a downlink reference signal (e.g., a DMRS) over a downlink control channel (e.g., a physical downlink control channel (PDCCH)) during an initial symbol duration of a transmission time interval (TTI). The downlink reference signal may include a set of bits including a first subset of bits including network temporary identifier bits and a second subset of bits including constellation bits associated with a downlink data channel (e.g., a physical downlink shared channel (PDSCH)). The communication device may process the downlink reference signal (e.g., a DMRS) based on the downlink reference signal configuration (e.g., a DMRS configuration).

    POWER HARVESTING PROTOCOL FOR CONFIGURABLE METASURFACES IN A WIRELESS WIDE AREA NETWORK (WWAN)

    公开(公告)号:US20220376555A1

    公开(公告)日:2022-11-24

    申请号:US17327634

    申请日:2021-05-21

    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for implementing a power harvesting protocol at a network entity and a channel engineering device (CED) of a wireless communication network. In some aspects, the network entity and the CED may implement a power harvesting protocol that includes power harvesting capabilities and configuration signaling to support power harvesting at the CED. The CED may provide a power harvesting capabilities message to the network entity that includes a parameter that indicates capabilities for power harvesting at the CED. The network entity may respond with a power harvesting configuration message to configure the CED for power harvesting. After configuration of the CED, the network entity may transmit dedicated and non-dedicated (or opportunistic) power harvesting signals to the CED for use by the CED for power harvesting. The dedicated and non-dedicated power harvesting signals may be periodic or aperiodic.

    ENHANCED PHASE TRACKING REFERENCE SIGNAL FOR DIGITAL POST DISTORTION ASSIST

    公开(公告)号:US20220368584A1

    公开(公告)日:2022-11-17

    申请号:US17319390

    申请日:2021-05-13

    Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may identify a set of data resource elements for transmitting data in one or more symbols periods. The first wireless device may generate, for the one or more symbol periods based on the set of data resource elements, a sequence of a set of pilot resource elements associated with the set of data resource elements, the sequence of the set of pilot resource elements including a phase tracking reference signal. The first wireless device may transmit, to a second wireless device in the one or more symbol periods, the set of data resource elements and the set of pilot resource elements. The second wireless device may decode a first subset of the set of pilot resource elements based on a second subset of the set of pilot resource elements to determine the phase tracking reference signal.

    UPLINK BEAM MANAGEMENT USING A CONFIGURABLE DEFLECTOR

    公开(公告)号:US20220352974A1

    公开(公告)日:2022-11-03

    申请号:US17246012

    申请日:2021-04-30

    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques allow a channel engineering device (CED) to identify a suitable configuration for deflecting uplink transmissions from a user equipment (UE) to a base station. The base station may transmit control signaling to the CED indicating multiple configurations for deflecting uplink reference signals. The UE may then transmit the uplink reference signals to the CED, and the CED may deflect the uplink reference signals using the indicated configurations. The base station may receive the uplink reference signals from the UE via the CED, and the base station may perform measurements on the uplink reference signals. The base station may then identify a configuration for the CED to use to deflect subsequent transmissions from the UE to the base station based on the measurements, and the base station may transmit an indication of the configuration to the CED.

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