256 QAM-based resource allocation method and base station thereof

    公开(公告)号:US10390349B2

    公开(公告)日:2019-08-20

    申请号:US15126579

    申请日:2015-02-04

    Abstract: One embodiment of the present specification provides a method for allocating resources to user equipment (UE) supporting 256 quadrature amplitude modulation (QAM) demodulation. The resource allocation method can comprise the steps of: receiving a channel quality information (CQI) report from the UE; determining, by the UE, whether a backoff of transmission power has been applied to a downlink subframe from which CQI is measured; determining whether the backoff of the transmission power is to be applied to the downlink subframe which is supposed to allocate the resources; and determining a modulation coding scheme (MCS) level on the basis of the CQI and the results of the determination.

    Method and terminal for removing interference

    公开(公告)号:US10349307B2

    公开(公告)日:2019-07-09

    申请号:US15503366

    申请日:2015-08-13

    Abstract: An aspect of the present disclosure provides a method of removing interference at a terminal. The method may include the steps of: receiving information on a plurality of measurement sets for an interfering cell from a serving cell; performing a first measurement on a subframe indicated by a first measurement set from a plurality of measurement sets based on a cell-specific reference signal (CRS) received from a remote radio head (RRH) and a macro base station in the interfering cell; and performing a second measurement on a subframe indicated by a second set of measurements based on a CRS received from the macro base station in the interfering cell; and reporting a result of the first measurement and a result of the second measurement to the serving cell.

    Method and user device for measuring reference sensitivity for prose communication

    公开(公告)号:US10348434B2

    公开(公告)日:2019-07-09

    申请号:US15757640

    申请日:2016-09-20

    Abstract: One disclosure of the present specification provides a method for measuring reference sensitivity (REFSENS) for proximity service (ProSe) communication. The method may comprise a step of establishing an uplink center frequency of band 1 of a cellular base station operating as an interference source to be 1922.5 MHz in order to measure the REFSENS, and adjusting a radio frequency (RF) unit in order to establish a channel bandwidth to be 5 MHz, in case that evolved universal terrestrial radio access (E-UTRA) band 1 is established for communication with the cellular base station and E-UTRA band 28 is established for ProSe communication; and a step of establishing an uplink center frequency of band 4 of the cellular base station operating as the interference source to be 1752.5 MHz in order to measure the REFSENS, and adjusting the RF unit in order to establish a channel bandwidth to be 5 MHz, in case that E-UTRA band 4 is established for communication with the cellular base station and E-UTRA band 2 is established for ProSe communication.

    Method for performing network assisted interference cancellation and suppression in situation in which carrier aggregation is set, and user equipment

    公开(公告)号:US10187168B2

    公开(公告)日:2019-01-22

    申请号:US15520402

    申请日:2015-10-28

    Abstract: Provided is a method for performing network assisted interference cancellation and suppression (NAICS) in user equipment (UE) in which a carrier aggregation (CA) is set. The method can comprise the steps of: receiving a UE capability request message; and transmitting UE capability information by responding to the UE capability request message. The UE capability information can include information related to an NAICS operation in a situation in which a CA is set. The method can comprise a step of receiving interference cancellation support information from a base station. The interference cancellation support information can include information on neighboring cells identified by respectively operating in one or more carriers which are selected by the base station on the basis of the transmitted UE capability information. The method can comprise a step of cancelling the interference received from the neighboring cells, on the basis of the information on the neighboring cells within the interference cancellation support information.

    Method of transmitting SLSS by V2V terminal

    公开(公告)号:US10172107B2

    公开(公告)日:2019-01-01

    申请号:US15467347

    申请日:2017-03-23

    Abstract: The disclosure of the present invention proposes a method for transmitting a sidelink synchronization signal (SLSS). The method may be performed by a vehicle-to-vehicle (V2V) terminal and comprise: performing measurements during a predetermined evaluation time; determining whether values resulting from performing the measurements are below a threshold value; and if the values resulting from performing the measurements during the predetermined evaluation time are below the threshold value, transmitting the SLSS to a neighboring V2V terminal. If the V2V terminal is in radio resource control (RRC) idle state and if the V2V terminal is configured to use 1.28 s or 2.56 s of a discontinuous reception (DRX) cycle length, the V2V terminal may calculate the predetermined evaluation time by using the number of DRX cycles which is not greater than 3.

    Interference cancellation reception method

    公开(公告)号:US10064087B2

    公开(公告)日:2018-08-28

    申请号:US15502774

    申请日:2015-07-29

    Abstract: One disclosure of the present specification provides an interference cancellation reception method. The interference cancellation reception method can comprise the steps of: cancelling an interference caused by a cell-specific reference signal (CRS) from a neighboring cell which is mixed within a signal received from a serving cell; blind-detecting a parameter related to a demodulation reference signal (DMRS) so as to discover whether the signal from the neighboring cell mixed within the received signal is a data channel modulated on the basis of the DMRS; cancelling an interference between the detected DMRS signal and a DMRS signal of the serving cell when the DMRS is detected on the basis of the DMRS-related parameter; blind-detecting a modulation order for the data channel from the neighboring cell; and receiving only the signal from the serving cell through the interference cancellation by the data channel from the neighboring cell on the basis of the modulation order.

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