Communication Security At A Physical Layer

    公开(公告)号:US20250168626A1

    公开(公告)日:2025-05-22

    申请号:US18835161

    申请日:2022-05-07

    Abstract: Various embodiments may provide communication security at a physical layer. In some embodiments, a first wireless device at a first location may transmit to a second wireless device at a second location different portions of a message via two or more different spatially separated signal paths in a manner that enables the second wireless device to receive the complete message but prevents reception of the complete message by a third wireless device at a third location different from the second location. The second wireless device may receive different portions of the message via the two or more different spatially separated signal paths, may assemble the message from the received different portions of the message.

    BUFFER RESTRICTION FOR TIME-DOMAIN CHANNEL STATE INFORMATION REPORTING

    公开(公告)号:US20250142389A1

    公开(公告)日:2025-05-01

    申请号:US18837126

    申请日:2022-04-24

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive from a network entity, a control message triggering the UE to provide a time-domain aperiodic channel state information (A-CSI) report for indicating time-domain channel state information (CSI) associated with CSI reference signal (CSI-RS) resources within an observation window, where a beginning of the observation window is based on when the control message is received. The UE may perform performing measurements of channel state information reference signals (CSI-RSs) received via the CSI-RS resources that occur within the observation window. The UE may then transmit, to the network entity based on the control message, the time-domain A-CSI report indicating measured time-domain CSI associated with the observation window, where the measured time-domain CSI is based on the measurements.

    HEXAGONAL ANTENNA LATTICE FOR MULTIPLE-INPUT, MULTIPLE-OUTPUT COMMUNICATIONS WITH BEAMFORMING

    公开(公告)号:US20240413863A1

    公开(公告)日:2024-12-12

    申请号:US18702265

    申请日:2021-12-30

    Abstract: Methods, systems, and devices for wireless communication are described. A first wireless device may transmit one or more signals to a second wireless device using an antenna panel including antenna elements that are arranged in a hexagonal configuration. The signals may be transmitted using one or more directional beams for multiple-input multiple-output communications with the second wireless device, the directional beams generated based on the antenna elements in the hexagonal configuration. The first wireless device may receive a signal from the second wireless device, and in some cases, the first wireless device may transmit one or more reference signals via the one or more directional beams, the reference signals associated with a set of two or more antenna elements of the antenna panel of the first wireless device. The second wireless device may perform measurements of the reference signals and transmit a measurement report to the first wireless device.

    DEMODULATION REFERENCE SIGNALING FOR SELECTIVE CHANNELS

    公开(公告)号:US20230216636A1

    公开(公告)日:2023-07-06

    申请号:US17998251

    申请日:2020-06-17

    CPC classification number: H04L5/0051 H04L25/0224

    Abstract: Methods, systems, and devices for wireless communications are described. A communication device, which may be a user equipment (UE), may receive a message including an indication of a set of demodulation reference signal (DMRS) candidates for a data channel. The data channel may be a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH) in some examples. The UE may determine a set of parameters associated with the set of DMRS candidates based on the received message. The set of parameters may correspond to a radio frequency spectrum subband or a radio frequency spectrum band associated with the data channel. The UE may estimate one or more characteristics of the data channel using the set of parameters associated with the set of DMRS candidates to perform wireless communication (e.g., PDSCH reception, PUSCH transmission).

    TEMPORAL DOMAIN PRECODING CONFIGURATION FOR WIRELESS COMMUNICATIONS

    公开(公告)号:US20250096969A1

    公开(公告)日:2025-03-20

    申请号:US18728047

    申请日:2022-04-01

    Abstract: Methods, systems, and devices for wireless communications are described. The method may include a first network node receiving a configuration message for a report by the first network node of parameters for a temporal domain precoder. The configuration message may indicate a range of Doppler frequencies, a resolution associated with the range of Doppler frequencies, or a quantity of the parameters to be reported. The first network node may estimate a communications channel and select one or more bins within the range of Doppler frequencies based on the channel estimation. For each selected bin, the first network node may determine a corresponding discrete Fourier transform (DFT) vector and transmit a report indicating the corresponding DFT vector.

    SSB TRANSMISSION IN HOLOGRAPHIC-MIMO SYSTEM

    公开(公告)号:US20250096864A1

    公开(公告)日:2025-03-20

    申请号:US18566612

    申请日:2021-08-12

    Abstract: A base station may select at least one of one or more 2D beams for at least one first SSB of a plurality of SSBs or one or more 3D beams for at least one second SSB of the plurality of SSBs. A UE may identify a beam type of at least one of one or more 2D beams for at least one first SSB of a plurality of SSBs or one or more 3D beams for at least one second SSB of the plurality of SSBs. The base station may transmit, to the UE, at least one of the at least one first SSB via the one or more 2D beams or the at least one second SSB via the one or more 3D beams.

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