Techniques for reporting channel state information periodicity

    公开(公告)号:US11791966B2

    公开(公告)日:2023-10-17

    申请号:US17471427

    申请日:2021-09-10

    CPC classification number: H04L5/0053 H04L5/0048

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) configured for a periodic channel stat information (CSI) reference signal (CSI-RS) configuration may request an update for one or more parameters of the periodic CSI-RS configuration. For example, the UE may transmit request to a base station for a longer periodicity based on detecting a low Doppler scenario or little variance to wireless channel conditions, or the UE may request a shorter periodicity based on detecting a high Doppler scenario or high variance to wireless channel conditions. The base station may update a configuration for CSI or for CSI-RS based on the request. For example, the base station may update a periodicity for the periodic CSI-RS configuration based on the requested periodicity.

    Selecting the location of peak reduction tones for reducing a peak-to-average power ratio of a wireless transmission

    公开(公告)号:US11770283B2

    公开(公告)日:2023-09-26

    申请号:US17356196

    申请日:2021-06-23

    CPC classification number: H04L27/2618 H04L27/2615

    Abstract: Aspects of the disclosure relate to techniques for peak-to-average power ratio (PAPR) reduction based on a tone reservation (TR) algorithm. For a TR algorithm, a suitable subset of tones from among a full set of tones in a given resource allocation are reserved for use as peak reduction tones (PRT). An apparatus, such as a wireless communication device, selects a set of PRTs based on a deterministic pseudo-random tone selection algorithm, such as quadratic sampling, cubic sampling, or Fibonacci-type sampling. The apparatus determines a PAPR reduction waveform for transmission on the PRTs and transmits a data waveform multiplexed with the PAPR reduction waveform on resources corresponding to the resource allocation. Other aspects, embodiments, and features are also claimed and described.

    TECHNIQUES FOR ENHANCED SIDELINK FEEDBACK TRANSMISSION

    公开(公告)号:US20230224900A1

    公开(公告)日:2023-07-13

    申请号:US17572111

    申请日:2022-01-10

    CPC classification number: H04W72/0406

    Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device (e.g., a user equipment (UE)) may receive a control message indicating a feedback resource configuration for transmitting feedback information over a sidelink feedback channel that includes two or more symbol periods. The feedback resource configuration may include one or more start and length indicator values (SLIVs), one or more bitmaps, or a combination thereof. The first wireless device may receive a sidelink message from a second wireless device (e.g., a UE) over a sidelink shared channel. The first wireless device may transmit the feedback information to the second wireless device based on decoding the sidelink message from the second wireless device. The first wireless device may transmit the feedback information over the sidelink feedback channel using the two or more symbol periods in accordance with the feedback resource configuration.

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