TIME DELAY COMPENSATION METHOD AND APPARATUS AND TIME DELAY CONTROL METHOD AND APPARATUS

    公开(公告)号:US20220200695A1

    公开(公告)日:2022-06-23

    申请号:US17601715

    申请日:2020-03-13

    Inventor: Bin REN Deshan MIAO

    Abstract: Disclosed are a time delay compensation method and apparatus and a time delay control method and apparatus, which are used for performing time delay compensation on the basis of a relative time delay of a service link and a relative time delay of a feeder link. An uplink timing mechanism for an NTN system is provided, thereby ensuring the reliability of a synchronization establishment process of the NTN system and the timing accuracy of a subsequent data transmission process. Provided is a time delay compensation method, comprising: determining that time delay compensation needs to be performed on a service link and a feeder link in a non-terrestrial networks (NTN) system; and performing time delay compensation on the basis of a relative time delay of the service link and a relative time delay of the feeder link.

    METHOD AND DEVICE FOR DETERMINING TIMING ADVANCE

    公开(公告)号:US20220150858A1

    公开(公告)日:2022-05-12

    申请号:US17430325

    申请日:2020-01-15

    Abstract: The embodiments of the present application relate to a method and device for determining a timing advance, applied to the establishment of a timing advance in a random access process of an NTN system. The method in the embodiments of the present application includes: receiving and acquiring relevant parameters in a configuration message, wherein the relevant parameters include cell common time delay information; and determining, according to the cell common time delay information, an uplink timing advance of an uplink transmission timing position with respect to a configuration message receiving position. With regard to cell common time delay information existing in the NTN system, an uplink transmission timing position is determined, and a PRACH Preamble is sent in advance, so that the problem when applied to the establishment of the timing advance in the random access process of the NTN system is solved, and the calculation accuracy of the timing advance in a data transmission process after the random access process is ensured.

    METHOD FOR TRANSMITTING AND RECEIVING A SIGNAL, NETWORK APPARATUS, AND TERMINAL

    公开(公告)号:US20210368444A1

    公开(公告)日:2021-11-25

    申请号:US17257003

    申请日:2019-07-10

    Abstract: The present application discloses a signal transmitting and receiving method, a network apparatus, and a terminal, for reducing power consumption of terminals. The signal transmitting method comprises: a network apparatus determining a wake-up identifier of a terminal to be awakened, wherein the terminal is a terminal that needs to be awakened during a discontinuous reception (DRX) period, the wake-up identifier is a wake-up identifier configured by the network apparatus for at least one terminal to be awakened; and the network apparatus generating, according to the wake-up identifier, an energy saving instruction signal and transmitting the same, the energy saving instruction signal instructing the terminal to monitor a physical downlink control channel (PDCCH) during the DRX period.

    WAKEUP REGION UPDATE METHOD AND DEVICE

    公开(公告)号:US20210235384A1

    公开(公告)日:2021-07-29

    申请号:US16972017

    申请日:2019-04-03

    Abstract: The embodiments of the present application provide a wakeup region update method and device for updating a wakeup region of a terminal. The method includes a terminal receiving a wakeup signal, the wakeup signal carrying a wakeup region indicator; and the terminal updating the wakeup region indicator of the terminal according to the wakeup region indicator carried by the wakeup signal received. The present application is adopted to achieve updating and maintenance of the wakeup region of the terminal.

    SIGNAL TRANSMISSION METHOD AND DEVICE

    公开(公告)号:US20210235381A1

    公开(公告)日:2021-07-29

    申请号:US15734966

    申请日:2019-04-09

    Abstract: Disclosed are a signal transmission method and device for realizing transmission of a triggered reference signal, so as to enable a terminal to immediately utilize a reference signal to perform a corresponding operation, lower power consumption of the terminal, and to achieve power saving effects. The embodiments of the present application provide a signal transmission method at a network side, the method comprising: sending to a terminal a wakeup signal used to wake up the terminal; and sending a reference signal to the terminal; or sending to a terminal a wakeup signal used to wake up the terminal and a message indicating whether the network side will send a reference signal.

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