Communication method and MTC device using narrowband

    公开(公告)号:US10917214B2

    公开(公告)日:2021-02-09

    申请号:US15756954

    申请日:2016-09-08

    Abstract: One disclosure of the present specification provides a method for performing, by a machine type communication (MTC) device, communication using a narrowband. The method may comprise the steps of: receiving setting information on a narrowband which can be used for communication, wherein the setting information comprises at least one narrowband which can be used according to at least one physical channel; determining a narrowband for a physical channel for communication on the basis of the setting information; and performing communication with respect to the physical channel using the determined narrowband.

    Method for updating hybrid CSI in multiple antenna communication system and device therefor

    公开(公告)号:US10903881B2

    公开(公告)日:2021-01-26

    申请号:US16824520

    申请日:2020-03-19

    Abstract: Disclosed is a method for a terminal reporting channel status information (CSI) to a base station in a wireless communication system. The method comprises receiving, via an upper later, information associated with a single CSI process comprising a firs enhanced multiple input multiple output (eMIMO) type and a second eMIMO type; reporting, to a base station, a first CSI updated on the basis of a first channel status information-reference signal (CSI-RS) corresponding to the first eMIMO type received from a first subframe; and receiving, from the base station, a triggering message of a second CSI calculated on the basis of a second CSI-RS corresponding to the second eMIMO type from a second subframe.

    Uplink power control in dual connectivity to first or second cell group based on first or second configuration

    公开(公告)号:US10772046B2

    公开(公告)日:2020-09-08

    申请号:US15887236

    申请日:2018-02-02

    Abstract: A method for performing a power scaling is discussed. The method performed by a user equipment (UE) includes determining, by the UE configured with dual connectivity to a first cell group and a second cell group, a first power for transmitting a first uplink channel on a first subframe toward the first cell group; determining a second power for transmitting a second uplink channel on a second subframe toward the second cell group; and scaling down the second power for transmitting the second uplink channel if a maximum power is exceeded, wherein the first uplink channel includes a first physical random access channel (PRACH), wherein the second uplink channel includes a second PRACH, and wherein the scaling down is performed if the first subframe is overlapped with the second subframe.

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