DETERMINING ROUND TRIP TIME IN NTN
    16.
    发明公开

    公开(公告)号:US20240340825A1

    公开(公告)日:2024-10-10

    申请号:US18423405

    申请日:2024-01-26

    CPC classification number: H04W56/0045 H04W84/06

    Abstract: There is provided a method performed by a user equipment configured to operate in a non-terrestrial network, the method comprising: acquiring a scheduling offset value for communication between the apparatus and a first network node; determining a time difference between a reception of a downlink message and transmission of an uplink message, wherein the uplink message is transmitted in response to the downlink message; determining a time domain value based on the determined time difference and the acquired scheduling offset; and reporting the time domain value to a second network entity.

    UTILIZING USER EQUIPMENT (UE) DETECTION OF RADIO STATE CONDITIONS

    公开(公告)号:US20230370883A1

    公开(公告)日:2023-11-16

    申请号:US18246558

    申请日:2021-09-16

    CPC classification number: H04W24/10 H04W24/08

    Abstract: Systems, methods, apparatuses, and computer program products for utilizing user equipment (UE) detection of radio state conditions. For example, certain embodiments may detect and utilize knowledge of periodic line-of-sight (LOS)/non-LOS (NLOS) radio state changes to improve a network's handling of such radio states. In particular, a UE may be configured to observe LOS/NLOS radio state transitions over time. The UE may generate an estimate of when periodic radio state changes have occurred. The UE may report a prediction of a future LOS/NLOS radio state change based on the estimates of when the previous radio state changes have occurred. The predictions may be reported to the network as a measurement report.

    LOCATION CALCULATION
    18.
    发明公开

    公开(公告)号:US20230296720A1

    公开(公告)日:2023-09-21

    申请号:US18123579

    申请日:2023-03-20

    CPC classification number: G01S5/0249 H04W64/00 H04B7/18513 G01S5/14

    Abstract: Aspects and embodiments relate to an apparatus and method for evaluating location of a terrestrial network node in a non-terrestrial network. In particular, one aspect provides an apparatus, comprising means for receiving an indication of propagation delay between a terrestrial network node and a non-terrestrial node in a non-terrestrial wireless communication network; means for receiving an indication of location of the non-terrestrial node; and means for evaluating location of the terrestrial network node in dependence upon the received indication of propagation delay between the terrestrial network node and the non-terrestrial node, and the indication of location of the non-terrestrial node. A further aspect provides a method of evaluating location of a terrestrial network node, and a computer program product operable, when executed on a computer, to perform that method. Aspects and embodiments recognise that having a knowledge of gNB and NTN-GW location in a non-terrestrial network can allow UE to simplify procedures in relation to the updating and tracking of forward link delay. Since it has been agreed that a network will not directly provide the gNB and/or NTN-GW location to UE, due to security and privacy reasons in some countries, apparatus can be configured to perform methods according to which a UE is operable to calculate or obtain information which can assist its ongoing operation and reduce an ongoing need to decode SIB in support of calculation of an appropriate Uplink timing advance (TA) to apply in relation to communications exchanged with a network.

    SIB-BASED DISTRIBUTED ACCESS FOR SATELLITE SWITCHING WITHOUT L3 MOBILITY

    公开(公告)号:US20250168895A1

    公开(公告)日:2025-05-22

    申请号:US18932937

    申请日:2024-10-31

    Abstract: A method, apparatus, and computer-program product are provided. In the context of a method, the method receives, from a first network node via a source satellite, a system information block, wherein the system information block indicates a random access channel opportunity window in which the user equipment should access the first network node or a second network node. The method includes determining, based on the system information block, an access time within the random access channel opportunity window. The method includes transmitting, to the first network node or the second network node via a target satellite, a random access channel preamble at the access time.

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