Micro sleep techniques in star topology sidelink communications

    公开(公告)号:US11706709B2

    公开(公告)日:2023-07-18

    申请号:US17360697

    申请日:2021-06-28

    CPC classification number: H04W52/0216

    Abstract: Methods, systems, and devices for wireless communications are described. A hub user equipment (UE) in a star topology may broadcast to a set of peripheral UEs indicating slots when the hub UE will not be in a transmission mode. The hub UE may broadcast a slot format indication to the peripheral UEs to indicate operating modes in a set of slots. In a first group of slots, the hub UE may operate in a forward mode, transmitting sidelink communications to the peripheral UEs. In a second group of slots, the hub UE may operate in a reverse mode, receiving sidelink communications from the peripheral UEs. In slots when the hub UE operates in the reverse mode, if a peripheral UE does not have data or control information, the peripheral UE may enter a sleep mode in one or more slots of the second group to save power.

    Measurement gap (MG) consideration of sidelink (SL)-assisted positioning

    公开(公告)号:US11689951B2

    公开(公告)日:2023-06-27

    申请号:US17160599

    申请日:2021-01-28

    CPC classification number: H04W24/10 H04L5/0051 H04W64/006 H04W92/18

    Abstract: A method of measurement gap (MG) configuration of a first user equipment (UE) for sidelink positioning reference signal (SL-PRS) measurements comprises determining, at a network node, information regarding a first positioning reference signal (PRS) measurement to be made by the first UE. The first PRS measurement may comprise an SL-PRS measurement. The method also comprises determining, at the network node, information regarding a second PRS measurement. The method also comprises determining an MG configuration, where the MG configuration schedules at least one MG for at least one period of time during which during which the first UE is to make the first PRS measurement, and the MG configuration is based at least in part on the information regarding the first PRS measurement and the information regarding the second PRS measurement. The method also comprises sending the MG configuration to the first UE.

    User multiplexing for uplink control information

    公开(公告)号:US11646928B2

    公开(公告)日:2023-05-09

    申请号:US17152761

    申请日:2021-01-19

    Abstract: Methods, systems, and devices for wireless communications are described. Pre-discrete Fourier transform (DFT) time-domain spreading codes may be applied for UE multiplexing for uplink control information (e.g., over shared resources of an uplink slot). For example, a moderate number of UEs may be multiplexed within the same slot by having each UE spread modulation symbols before DFT-spreading by different spreading code. For orthogonality across UEs, the pre-DFT spreading codes may be selected as orthogonal cover codes (OCCs). The spreading sequences can be generated from a set of any orthogonal sequences or generated from unitary matrices. In some cases, orthogonality in the time domain may be kept as well as a frequency division multiplexed (FDM) structure in the frequency domain. For such property, a Fourier basis OCC design may be used. In some other examples, a Hadamard matrix based OCC design may be used.

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