Doppler compensation in non-terrestrial networks

    公开(公告)号:US11500111B2

    公开(公告)日:2022-11-15

    申请号:US17474298

    申请日:2021-09-14

    Abstract: Apparatus and method for communication in non-terrestrial networks are disclosed. A set of Doppler shift curves for different distances to one or more satellite orbits is obtained. Measurements of satellite transmission are performed to obtain estimate of instantaneous Doppler shift of the transmission, the measurements including a timestamp. A Doppler shift curve corresponding to the measurements is calculated. A time offset on the selected curve is determined utilising the timestamps of the measurements, the time offset indicating the position of the Doppler shift of the apparatus on the curve. The Doppler shift of the satellite transmission is determined utilising the selected curve and the time offset.

    Method, system and apparatus identifying an interfering aerial vehicle user equipment within a communications system

    公开(公告)号:US11659419B2

    公开(公告)日:2023-05-23

    申请号:US16754820

    申请日:2017-10-13

    CPC classification number: H04W24/08 H04W24/02 H04W88/08

    Abstract: A method for identifying an interfering aerial vehicle user equipment within a communications system, the method including determining for the interfering aerial vehicle user equipment a first signal measurement value is less than a first threshold value; and determining for the interfering aerial vehicle user equipment a second signal measurement value related to the radio interface between the interfering aerial vehicle user equipment and a serving cell access point is greater than a second threshold value, and the first signal measurement value is determined based on a comparison between the second signal measurement value and further signal measurement values related to the radio interface between the interfering aerial vehicle user equipment and at least one further cell access point.

    UE Location Validation for PUR in LEO Networks

    公开(公告)号:US20220295225A1

    公开(公告)日:2022-09-15

    申请号:US17196260

    申请日:2021-03-09

    Abstract: A method including receiving, at a user equipment, one or more location related information, where the location related information comprises information based upon location related to one or more satellite; determining, by the user equipment, timing advance, where the determining is at least partially based upon the location related information; determining, by the user equipment, to perform a preconfigured uplink resource transmission; and performing, based at least partially upon the determined timing advance, the preconfigured uplink resource transmission.

    PROACTIVE TRIGGERING IN TELECOMMUNICATION NETWORKS

    公开(公告)号:US20220225181A1

    公开(公告)日:2022-07-14

    申请号:US17611376

    申请日:2020-05-12

    Abstract: A method, apparatus, and a computer-readable storage medium are provided for proactive triggering of handovers in wireless communication networks. In one example implementation, the method may include receiving, by a user equipment (UE), handover configuration information from a first network node of a plurality of network nodes, estimating rate of change values of reference signal (RS) difference measurements, a reference signal (RS) difference measurement being a difference in reference signal (RS) measurements between the first network node and a second network node of one or more second network nodes, comparing the rate of change values with the mapping information received from the first network node, determining one or more timeToPreTrigger values based on the comparison, initiating one or more timeToPreTrigger timers based on the corresponding one or more timeToPreTrigger values, the one or more timeToPreTrigger timers corresponding to different second network nodes, generating one or more measurement reports upon expiration of the one or more timeToPreTrigger timers, and transmitting the one or more measurement reports to the first network node. In an another example implementation, the method may include transmitting, by a first network node of a plurality of network nodes, handover configuration information to a user equipment (UE), receiving a measurement report from the user equipment (UE), the measurement report corresponding to at least one second network node of the one or more second network nodes, selecting, based on the measurement report, a second network node of the one or more second network nodes for performing a handover, and transmitting an indication to the user equipment (UE) about performing the handover to the selected second network node based on the indication.

    TIMING ADVANCE COMPENSATION
    37.
    发明申请

    公开(公告)号:US20220167289A1

    公开(公告)日:2022-05-26

    申请号:US17593428

    申请日:2019-03-29

    Abstract: Devices, methods and computer programs for timing advance variation compensation in wireless communications are disclosed Timing advance variation for a client device communicating with a network node device at least partially via an air/space born vehicle communication connection is determined based on measurements on uplink signaling from the client device. A timing advance compensation function curve from a set of predetermined timing advance compensation function curves is selected, such that the selected timing advance compensation function curve corresponds with the determined timing advance variation. An indication of the selected timing advance compensation function curve is signaled to the client device.

    NEIGHBOUR CELL MEASURING
    38.
    发明申请

    公开(公告)号:US20220061004A1

    公开(公告)日:2022-02-24

    申请号:US17445592

    申请日:2021-08-20

    Abstract: Disclosed is a method comprising determining a first time period during which radio mobility of one or more terminal devices is not expected, determining a second time period during which radio mobility of the one or more terminal devices is expected, determining a first synchronization signal block, SSB, transmission mode that is to be applied during the first time period, and determining a second synchronization signal block, SSB, transmission mode that is to be applied during the second time period.

    Radio network temporary identifier generation

    公开(公告)号:US11057947B2

    公开(公告)日:2021-07-06

    申请号:US15379884

    申请日:2016-12-15

    Abstract: Various communication systems may benefit from improved network access. For example, communication systems may benefit from deriving a radio network temporary identification at both a user equipment and a base station, without requiring additional uplink signaling. A method, in certain embodiments, may include sending a short identification from a user equipment to a base station during a contention based access instance. The short identification is generated based on an initial cell radio network temporary identification. The method may also include receiving at the user equipment a user equipment radio network temporary identification from the base station. The user equipment radio network temporary identification is based on the short identification. In addition, the method may include generating at the user equipment a subsequent cell radio network temporary identification based at least on the short identification and the received user equipment radio network temporary identification.

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