Secondary positioning reference signals for non-terrestrial networks in 5G new radio

    公开(公告)号:US12117537B2

    公开(公告)日:2024-10-15

    申请号:US17793524

    申请日:2020-02-07

    CPC classification number: G01S19/256 G01S5/10 H04W64/00 H04W84/06

    Abstract: Satellites in a non-terrestrial network may provide positioning reference signals (PRS) to user equipment (UE), with which the UE may determine its position using propagation delay difference measurements, such as Time Difference of Arrival (TDOA) measurement. Due to the large distances between satellites and the UE, the propagation delay differences in the PRS received from satellites may exceed half a radio frame, resulting in a frame level timing ambiguity in the differential measurements. The satellites transmit secondary PRS, along with primary PRS, that include timing information to resolve frame level timing ambiguity of the primary PRS. The positioning occasions in the secondary PRS, for example, may be aligned with corresponding positioning occasions primary PRS within each radio frame, and are transmitted with a periodicity that is an integer multiple (greater than 1) of that of the primary PRS to resolve the frame level timing ambiguity of the primary PRS.

    Downlink control information for dormancy indication and one-shot hybrid automatic repeat request feedback

    公开(公告)号:US12113626B2

    公开(公告)日:2024-10-08

    申请号:US18186628

    申请日:2023-03-20

    CPC classification number: H04L1/1812 H04W72/23

    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. A user equipment (UE) may receive, via a control channel in a primary cell, one or more downlink control information (DCI) messages that include a secondary cell (SCell) dormancy indication and a request for hybrid automatic repeat request (HARQ) feedback. The DCI messages may have a format associated with downlink scheduling, and fields used to carry the SCell dormancy indication and the request for HARQ feedback may have a configuration that depends on whether the DCI messages are used to schedule a downlink data transmission. Furthermore, in some aspects, a DCI message may include a field that has a value to indicate whether the DCI message does or does not schedule a downlink data transmission, to enable the UE to correctly receive and decode the SCell dormancy indication and the request for HARQ feedback.

    Assignment indexes for dynamic feedback

    公开(公告)号:US12074825B2

    公开(公告)日:2024-08-27

    申请号:US18152085

    申请日:2023-01-09

    CPC classification number: H04L5/0055 H04L1/1812

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may order assignment indicator values for transmissions for use by feedback information in a feedback message. The UE may receive, during a monitoring occasion, a first control information over a first serving cell and a second control information over a second serving cell, where each control information schedules a respective transmission for a scheduled serving cell. The UE may order assignment indicator values for the transmissions based on indexes associated with the first and second serving cells (e.g., scheduling serving cells), an index associated with the scheduled serving cell, a start time of the transmissions, or some combination thereof, among other examples. The assignment indicator values may be associated with hybrid automatic repeat request acknowledgement (HARQ/ACK) feedback, such that the UE may use the assignment indicator values to construct and transmit a feedback message.

    Multi-cell scheduling for power saving

    公开(公告)号:US12069572B2

    公开(公告)日:2024-08-20

    申请号:US17653274

    申请日:2022-03-02

    CPC classification number: H04W52/0216 H04W52/0235

    Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for multi-cell scheduling for power saving. A UE may receive a configuration of one or more first parameters for control channel monitoring based on a first type of scheduling and one or more second parameters for the control channel monitoring based on a second type of scheduling. The UE may monitor for DCI of the first type of scheduling based on a first condition of a scheduling cell and switch from monitoring for the DCI of the first type of scheduling to monitoring for the DCI of the second type of scheduling based on a second condition of a scheduled cell. The UE may receive scheduling information for at least one of a PDSCH or a PUSCH based on the second type of scheduling.

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