Asynchronous carrier aggregation slot alignment

    公开(公告)号:US11849440B2

    公开(公告)日:2023-12-19

    申请号:US18164853

    申请日:2023-02-06

    CPC classification number: H04W72/0453 H04W16/32 H04W72/0446

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information identifying an offset between a start of a frame on a first component carrier and a start of a frame on a second component carrier, wherein the first component carrier is one of a primary cell (PCell) or a secondary cell (SCell), and wherein the second component carrier is the other of the PCell or the SCell; determine that a slot on the first component carrier is aligned with a slot on the second component carrier; identify the slot on the second component carrier in accordance with the offset; and communicate on the first component carrier or the second component carrier based at least in part on the start of the slot on the second component carrier. Numerous other aspects are provided.

    Sequence based uplink control channel coexistence

    公开(公告)号:US11838083B2

    公开(公告)日:2023-12-05

    申请号:US17356232

    申请日:2021-06-23

    CPC classification number: H04B7/0639 H04B7/0456 H04L27/2607 H04W72/1268

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration signal indicating a codebook construction configuration for constructing a codebook of sequences for conveying a first type of uplink payload in a resource block that is orthogonal to a second type of uplink payload transmitted from a second UE in the resource block. The UE may construct the codebook of sequences for the first type of uplink payload according to the codebook construction configuration. The UE may generate the first type of uplink payload for transmission using a first sequence from the codebook of sequences. The UE may transmit the first type of uplink payload in the resource block, wherein the first type of uplink payload is multiplexed in the resource block with the second type of uplink payload from the second UE.

    Partial symbol design for sidelink communication

    公开(公告)号:US11832222B2

    公开(公告)日:2023-11-28

    申请号:US17539406

    申请日:2021-12-01

    CPC classification number: H04W72/044 H04L27/2607 H04L27/2628 H04L27/26132

    Abstract: This disclosure provides systems, methods and apparatus, including computer storage media, for sidelink communications using partial symbols to reduce overhead of automatic gain control (AGC) and gaps. A transmitting user equipment (UE) maps a sidelink signal to a subset of resource elements in a frequency domain allocation defined via a comb for a first orthogonal frequency division multiplexing (OFDM) symbol. The transmitting UE performs an inverse discrete Fourier transform (IDFT) on the resource elements to generate a first time domain signal that includes a number of repetitions of a first waveform based on a structure of the comb. The transmitting UE transmits at least one repetition of the first waveform of the first time domain signal during at least a portion of the first OFDM symbol. A receiving UE performs AGC and a discrete Fourier transform on portions of the time domain signal.

    Methods and apparatus for sequence design based on subsampling

    公开(公告)号:US11825462B2

    公开(公告)日:2023-11-21

    申请号:US17124433

    申请日:2020-12-16

    CPC classification number: H04W72/0466 G06F17/145 H04L27/2032 H04W72/21

    Abstract: The present disclosure relates to methods and devices for wireless communication. Aspects of the present disclosure can determine a matrix or Hadamard matrix associated with signal transmission, the matrix or Hadamard matrix including M rows and M columns. Also, aspects of the present disclosure can determine a sampling function for generating a set of sequences from the matrix or Hadamard matrix. Aspects of the present disclosure can also generate the set of sequences by sampling one of a set of rows or a set of columns based on the determined sampling function. Aspects of the present disclosure can also transmit a signal derived based on at least one sequence of the set of sequences.

    Carrier aggregation peak to average power ratio reduction using peak reduction tones

    公开(公告)号:US11817986B2

    公开(公告)日:2023-11-14

    申请号:US17369518

    申请日:2021-07-07

    CPC classification number: H04L27/2618 H04L27/2621

    Abstract: Peak to average power ratio (PAPR) reduction with respect to signals of component carriers of a carrier aggregation configuration may be provided using preconfigured or fixed PRT location sequences (e.g., fixing the number and location of PRTs). A device transmitting signals of component carriers of a carrier aggregation configuration may perform PRT magnitude and phase optimization processing with respect to PRTs of a PRT location sequence using techniques, such as may use a signal to clipping noise ratio, tone reservation (SCR-TR) algorithm. Various PRT location sequence configurations, such as PRT sideband location sequence configurations, PRT inband location sequence configurations, etc., may be selected to facilitate reduction of PAPR associated with the data tones of one or more carrier aggregation component carriers, such as to satisfy a PAPR threshold. Other aspects and features are also claimed and described.

    Reference signaling for sidelink communication

    公开(公告)号:US11804934B2

    公开(公告)日:2023-10-31

    申请号:US17444642

    申请日:2021-08-06

    CPC classification number: H04L5/0048 H04L25/0224 H04L27/18

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a source user equipment (UE) may transmit, on a sidelink interface, a first reference signal associated with the source UE. The source UE may receive, from a destination UE, a second reference signal associated with the destination UE based at least in part on the first reference signal. The source UE may perform a transmission to the destination UE based at least in part on a channel estimation operation performed based at least in part on the second reference signal. Numerous other aspects are provided

    Feedback mode indication for coordinated transmission

    公开(公告)号:US11804927B2

    公开(公告)日:2023-10-31

    申请号:US17657791

    申请日:2022-04-04

    CPC classification number: H04L1/1812 H04L1/0073 H04L1/1607 H04W76/27

    Abstract: Certain aspects of the present disclosure provide techniques for wireless communication. The techniques include a method wireless communication by a user equipment including receiving a configuration message, wherein the configuration message in part configures the UE to communicate coordinated transmissions with a plurality of transmission reception points using a coordinated transmission mode. The method further includes, receiving one or more physical downlink shared channel transmissions from a plurality of transmission reception points in accordance with the coordinated transmission mode. The method further includes, selecting a HARQ-ACK feedback mode based in part on the coordinated transmission mode. The method further includes, transmitting HARQ-ACK feedback to at least one of the plurality of transmission reception points using the selected HARQ-ACK feedback mode.

    Framework for simultaneous PUCCH/PUSCH transmissions and intra-UE multiplexing

    公开(公告)号:US11778610B2

    公开(公告)日:2023-10-03

    申请号:US17891828

    申请日:2022-08-19

    CPC classification number: H04W72/1268 H04W72/20 H04W72/569

    Abstract: A UE receives control signaling that indicates that the UE is scheduled to transmit one or more uplink control channel messages on a first component carrier that overlap in a time domain with one or more uplink shared channel messages scheduled for transmission on a second component carrier. The UE resolves a first overlap of uplink control channels having a same priority level, if present, and resolves, after resolving the first overlap, a second overlap of an uplink control channel and at least one uplink shared channel having the same priority level, if present. The UE resolves two or more channels having a different priority level after resolving the first overlap and the second overlap. The UE transmits one or more uplink transmissions including at least one of the one or more uplink control channel messages and the one or more uplink shared channel messages.

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