Flexible scheduling for multicast wireless communication

    公开(公告)号:US12250691B2

    公开(公告)日:2025-03-11

    申请号:US17379846

    申请日:2021-07-19

    Abstract: A base station multicasts a physical downlink shared channel (PDSCH) transmission and transmits downlink control associated with the PDSCH, wherein the downlink control comprises different parameters for uplink transmissions to multiple user equipments (UEs). A UE receives the associated the PDSCH, where the downlink control comprises different parameters for uplink transmissions to multiple UEs including an uplink transmission parameter for the UE. The UE receives the multicast PDSCH and transmits the uplink transmission based on the uplink transmission parameter for the UE and the multicast PDSCH.

    Reference signal patterns for multi-path channel estimation

    公开(公告)号:US12155520B2

    公开(公告)日:2024-11-26

    申请号:US17500793

    申请日:2021-10-13

    Abstract: Methods, systems, and devices for wireless communications are described. A device may receive a set of demodulation reference signals (DMRSs) over a multi-path channel on a set of resources in accordance with a reference signal pattern. The reference signal pattern may be associated with a non-uniform frequency spacing that results in a row-sampled Discrete Fourier Transform (DFT) matrix associated with the reference signal pattern having a lower coherence than other row-sampled DFT matrices. Additionally or alternatively, the device may receive a set of tracking reference signals (TRSs) over the multi-path channel. The set of TRSs may be specific to wide-area terrestrial broadcast services, single frequency network (SFN)-based broadcast services, multimedia broadcast multicast services (MBMSs), or the reference signal pattern. The device may perform channel estimation based on receiving one or both of the set of DMRSs or the set of TRSs over the multi-path channel.

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