Method for performing measurement in wireless device having plurality of RF chains

    公开(公告)号:US10390250B2

    公开(公告)日:2019-08-20

    申请号:US15558954

    申请日:2016-03-24

    Abstract: A disclosure of the present specification provides a method for performing measurement in a wireless device having a plurality of radio frequency (RF) chains for supporting aggregation of multiple carriers. The method may comprise the steps of: receiving, from a base station, information including measurement configuration (MeasConfig) information that includes a measurement gap (MG) for performing inter-frequency measurement; when the number of the received measurement gaps is one, determining, among the multiple carriers, a carrier corresponding to the RF chain to which the one measurement gap is to be applied; and transmitting, to the base station, a measurement report including the result of performing inter-frequency measurement by applying the measurement gap to the RF chain for the determined carrier. When the number of the received measurement gaps is one, the measurement report may include an indication of the carrier to which the measurement gap has been applied.

    Enhanced channel estimation method and user equipment performing the same

    公开(公告)号:US10326572B2

    公开(公告)日:2019-06-18

    申请号:US15394471

    申请日:2016-12-29

    Abstract: One disclosure of the present specification provides a channel estimation method of a user equipment (UE). The method comprising: acquiring a first channel estimate based on a first reference signal allocated to a first resource element of a subframe received from a base station; and removing a second reference signal from a second resource element of the subframe when an additional reference signal is not required, and decoding a data channel multiplexed in the second resource element using a result of channel estimation of an entire channel performed based on the first channel estimate. The second reference signal and the data channel may be multiplexed in the second resource element.

    Terminal using frequency band of mobile satellite service for LTE/LTE-A

    公开(公告)号:US10320470B2

    公开(公告)日:2019-06-11

    申请号:US15510828

    申请日:2015-08-11

    Abstract: A disclosure of the present specification provides a terminal which uses a frequency band of a mobile satellite service for LTE/LTE-A. The terminal comprises: a first duplexer for separating a transmitted signal and a received signal in band 1 defined in long term evolution (LTE)/LTE-Advanced; a second duplexer for separating a transmitted signal and a received signal in new band 65 which was a mobile satellite service (MSS) band and now is allocated for the terrestrial service; and a selection switch for selecting one of the first duplexer and the second duplexer. Herein, when only band 1 is configured and used, only the first duplexer may be operated by the selection switch. In contrast, when new band 65 is configured and used, wherein the configured band does not overlap the range of band 1, and when new band 65 is configured and used, wherein the configured band overlaps the range of band 1 for carrier aggregation, only the second duplexer may be operated by the selection switch.

    Method of measuring small cell and user equipment

    公开(公告)号:US10237768B2

    公开(公告)日:2019-03-19

    申请号:US15520635

    申请日:2015-11-05

    Abstract: A disclosure of the present specification provides a method of measuring a neighboring small cell. The method may include the steps of: receiving measurement configuration information from a serving cell; and measuring on the serving cell, the neighboring small cell, and a neighboring macro cell. The measurement configuration information may include one or more of a discovery signal measurement timing configuration (DMTC) and a measurement gap (MG) for the neighboring small cell. In addition, the DMTC may include DMTC periodicity information and information on the occasion section of a discovery signal. When a frequency band in which the serving cell operates, a frequency band in which the neighboring small cell operates, and a frequency band in which the neighboring macro cell operates are all the same, a measurement on the neighboring small cell may be performed for the time section by the DMTC and a measurement on the serving cell may be performed for sections other than the time section by the DMTC.

    Interference cancellation method in wireless communication system, and terminal

    公开(公告)号:US10028169B2

    公开(公告)日:2018-07-17

    申请号:US15326017

    申请日:2015-08-06

    Abstract: The present specification provides a method for receiving data through interference cancellation. The method can comprise the steps of: receiving a transmission signal transmitted by a DMRS-based transmission method; detecting, from the transmission signal, a DMRS-based transmission parameter for an interference cell having caused interference in the transmission signal; estimating an interference channel for the interference cell on the basis of the detected DMRS-based transmission parameter; generating an interference signal for the interference cell on the basis of the estimated interference channel; and cancelling the generated interference signal from the transmission signal so as to restore data transmitted by a serving cell.

    Method for performing power control for uplink transmission and user equipment

    公开(公告)号:US10004047B2

    公开(公告)日:2018-06-19

    申请号:US15126573

    申请日:2015-03-25

    CPC classification number: H04W52/262 H04W52/146

    Abstract: One embodiment of the present specification discloses a method for performing power control for an uplink transmission in user equipment. The method comprises the steps of: receiving a signal including information about a maximum modulation order among modulation schemes of a low order that can be used for an uplink transmission; comparing the modulation order set to be used for an uplink transmission with the modulation order included in the signal; and setting a transmission radio frequency (RF) unit into a first power mode if the modulation order set to be used for an uplink transmission is lower than or equal to the modulation order included in the signal.

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