Buffer management method for D2D communication, and wireless device

    公开(公告)号:US10298363B2

    公开(公告)日:2019-05-21

    申请号:US15557385

    申请日:2016-03-31

    Abstract: One embodiment of the present specification provides a method by which a wireless device manages a buffer for performing soft combining. The method can comprise the steps of: decoding data received through device-to-device (D2D) communication; determining whether an error exists in the decoded data; determining whether a radio resource control (RRC) connection with a base station is established or/and a carrier aggregation is configured and activated if the error exists; taking at least one from among an instantaneous buffer to be used when the carrier aggregation is activated and a hybrid automatic repeat request (HARQ) buffer to be used when the RRC connection is established, on the basis of whether the RRC connection with the base station is established and whether the carrier aggregation is activated; and storing, in the taken one or more buffers, a soft bit for performing soft combining.

    Method and user equipment for selecting cell for which to perform interference cancellation

    公开(公告)号:US10291343B2

    公开(公告)日:2019-05-14

    申请号:US15527929

    申请日:2015-12-01

    Abstract: A disclosure of the present specification provides a method for selecting a cell for which to perform interference cancellation. The method may comprise the steps of: measuring reception power on the basis of reference signals received from neighboring cells; measuring the reception power of a data channel received from a serving cell; selecting a candidate cell among the neighboring cells by comparing the reception power of the data channel from the serving cell with the reception power from the neighboring cells; performing blind detection only for the candidate cell; measuring the reception power of a data channel from the neighboring cell on the basis of the blind detection; and when the reception power of the data channel from the neighboring cell is larger by at least a threshold than the reception power of the data channel from the serving cell, selecting the candidate channel as a cell for which to perform interference cancellation.

    Method for receiving interference cancellation

    公开(公告)号:US10164683B2

    公开(公告)日:2018-12-25

    申请号:US15326030

    申请日:2015-07-29

    Abstract: One disclosure of the present specification provides a method for receiving interference cancellation. The method for receiving interference cancellation can comprise: a step for cancelling, in signals received from a serving cell, cell-specific reference signals (CRS) from the serving cell, the CRS from a first primary interference cell, and the CRS from a second primary interference cell; a step for comparing the signal size of the serving cell, the signal size of the first primary interference cell, and the signal size of the second primary interference cell; a step for determining whether the CRS of the serving cell conflicts with the CRS of the first primary interference cell or the CRS of the second primary interference cell; and a step for canceling, when it is determined that the CRS' conflict with one other, data signals from the first primary interference cell and data signals from the second primary interference cell in the signals where the CRS are cancelled in the order determined according to the size comparison of signals.

    Method for determining uplink transmission power
    59.
    发明授权
    Method for determining uplink transmission power 有权
    确定上行链路传输功率的方法

    公开(公告)号:US09451560B2

    公开(公告)日:2016-09-20

    申请号:US14976308

    申请日:2015-12-21

    Abstract: A method, performed by a user equipment (UE), is provided for determining uplink transmission power. A radio frequency (RF) unit is configured to use for an uplink transmission a frequency range of 1980 MHz through 2010 MHz or 1920 MHz through 2010 MHz. The UE receives a value of an additional maximum power reduction (A-MPR) from a serving base station (BS) adjacent to a neighboring BS for serving another UE using for an uplink transmission a frequency range of 2010 MHz through 2025 MHz. An uplink signal is transmitted at an uplink transmission power calculated by using the value of the A-MPR. The value of the A-MPR is 11 dB or 15 dB.

    Abstract translation: 提供了一种由用户设备(UE)执行的方法,用于确定上行链路传输功率。 射频(RF)单元被配置为用于上行链路传输,频率范围为1980MHz至2010MHz或1920MHz至2010MHz。 UE从邻近BS的服务基站(BS)接收附加的最大功率降低(A-MPR)的值,用于为2010MHz到2025MHz的频率范围的上行链路传输服务另一个UE。 以通过使用A-MPR的值计算的上行链路发送功率发送上行链路信号。 A-MPR的值为11 dB或15 dB。

    METHOD AND TERMINAL FOR TRANSMITTING UPLINK SIGNAL BY REDUCED POWER IN INTRABAND NON-CONTIGUOUS UPLINK CARRIER AGGREGATION
    60.
    发明申请
    METHOD AND TERMINAL FOR TRANSMITTING UPLINK SIGNAL BY REDUCED POWER IN INTRABAND NON-CONTIGUOUS UPLINK CARRIER AGGREGATION 有权
    通过降低功率在INTRABAND不连续上行链路载波聚合中发送上行链路信号的方法和终端

    公开(公告)号:US20150245302A1

    公开(公告)日:2015-08-27

    申请号:US14431189

    申请日:2013-09-27

    Abstract: One embodiment of the present specification relates to a method for reducing transmission power. The method for reducing transmission power can comprise the steps of: determining whether set carrier aggregation (CA) corresponds to intra-band non-contiguous CA when the CA is set; determining transmission power by applying maximum power reduction (MPR) when the set CA corresponds to intra-band non-contiguous CA; and reducing power by applying additional MPR to the determined transmission power in order to protect adjacent bands when non-contiguous carriers belong to a specific band.

    Abstract translation: 本说明书的一个实施例涉及一种降低发射功率的方法。 降低发送功率的方法可以包括以下步骤:当设置CA时,确定设置的载波聚合(CA)是否对应于带内不连续的CA; 当所述集合CA对应于带内不连续的CA时,通过应用最大功率减小(MPR)来确定传输功率; 并且通过对确定的发射功率应用附加MPR来降低功率,以便当非连续载波属于特定频带时保护相邻频带。

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