Abstract:
The present disclosure provides a method of performing up-link transmission at a reduced power. According to the method, system information may be received from a base station. The system information may include one or more of first information on an operating band and second information on an up-link bandwidth. Also, according to the method, a network signal for an additional power reduction may be received from the base station. Also, according to the method, when an operating band indicated by the first information is within a range of 777 MHz to 787 MHz and a bandwidth indicated by the second information is 5 MHz, namely, 777 MHz to 782 MHz, an additionally required power reduction may be determined in order to decrease interference to the band of an adjacently located public safety network according to the network signal, and up-link transmission at the reduced power may be performed.
Abstract:
A method is provided for assisting measurement of a user equipment (UE). The method is performed by a serving cell for the UE. The serving cell determines whether a cell-specific reference signal (CRS) of the serving cell is to collide with a CRS of a second neighbor cell or whether a CRS of a first neighbor cell is not to collide with the CRS of the second neighbor cell, if the serving cell and the first neighbor cell correspond to aggressor cells to the second neighbor cell corresponding to a victim cell. The serving cell generates a second measurement subframe pattern based on an almost blank subframe (ABS) pattern in response to the determination, and transmits the second measurement subframe pattern for the first and second neighbor cells to the UE.
Abstract:
One embodiment of the present specification provides an interference-removed reception method. The interference-removed reception method may comprise the steps of: receiving, from a serving cell, interference removal support information comprising transmission power information on the any channel of a neighboring cell; estimating the channel of the serving cell; receiving data by decoding the channel of the serving cell; and removing interference by the any channel of the neighboring cell, which is comprised in the received data, by using the transmission power in the received interference removal support information.
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:
One embodiment of the present specification provides an interference cancellation receiving method. According to the method, interference estimation support information can be received from a serving cell. The information includes information for a time domain and information for a frequency domain, wherein the information for a time domain can indicate a section of a subframe or a radio frame in which the coherence of an interference signal is maintained, and the information for a frequency domain can indicate a section in which the coherence of the interference signal is maintained. According to the method, an interference signal introduced from a neighboring cell is estimated by using the information for a time domain and the information for a frequency domain of the interference estimation support information, and a signal from the serving cell can be detected by cancelling the estimated interference.
Abstract:
The present invention provides a method for measuring a location. The method comprises: receiving, by a User Equipment (UE) and from a serving cell, information on a bandwidth allocated for a positioning reference signal (PRS); receiving, by the User Equipment (UE) and from at least one or more neighbor cells, information on a bandwidth allocated for a PRS; determining whether there is a difference between the bandwidths; and measuring, by the UE and based on a result of the determination a timing difference between PRSs transmitted from the serving cell and the at least one or more neighbor cells.
Abstract:
The present invention relates to a method by which a terminal measures interference in a wireless communication system in which a macro cell and a small-scale cell coexist. The interference measurement method can include a step in which a terminal receives setting information for interference measurement (IM). Here, the setting information for the IM includes at least two settings, each setting is defined in a resource element (RE) unit, the first of the two settings is for measuring interference from other neighboring cells besides the macro and small-scale cells, and the second is for measuring interference from the macro cell. The interference measurement method may further include: measuring interference by using setting information for the IM; and feeding back channel quality obtained by using the measured interference value.
Abstract:
A method for limiting a spurious emission; and a user equipment (UE) therefore are discussed. The method according to one embodiment includes, if a radio frequency (RF) unit of the UE is configured to use a band 1, configuring the RF unit of the UE to limit a maximum level of spurious emission to −50 dBm for protecting other UE using a band 5; if the RF unit of the UE is configured to use the band 5, configuring the RF unit of the UE to limit the maximum level of spurious emission to −50 dBm for protecting the other UE using at least one of bands 1, 3, 7, 8, 38, 40; and transmitting an uplink signal through the configured RF unit.
Abstract:
The present specification provides a method for performing measurements, by a terminal, in a coverage extension area of a small-scale cell in a wireless communication system in which macro cell and the small-scale cell coexist. The method for performing measurements can include the steps of: receiving information about a first subframe on which measurements for the small-scale cell can be performed and information about a second subframe on which measurements for the macro cell can be performed; when an interference cancellation function is set, measuring reference signal received power (RSRP) and a received signal strength indicator (RSSI) for the small-scale cell by driving the interference cancellation function on the first subframe; and measuring RSRP on the second subframe for the macro cell by driving the interference cancellation function and measuring the RSSI for the macro cell without driving the interference cancellation function.
Abstract:
There is provided a method for limiting a spurious emission, the method performed by a user equipment (UE). The method may comprise: if a radio frequency (RF) unit of the UE is configured to use a 3GPP standard based E-UTRA band 1, configuring a RF unit of the UE to limit a maximum level of spurious emission to −50 dBm for protecting other UE using a 3GPP standard based E-UTRA band 5 in order to apply a UE-to-UE coexistence requirement for the same region to inter-regions; if the RF unit is configured to use the 3GPP standard based E-UTRA band 5, configuring the RF unit of the UE to limit a maximum level of spurious emission to −50 dBm for protecting other UE using at least one of the 3GPP standard based E-UTRA bands 1, 3, 7, 8, 38, 40 in order to apply a UE-to-UE coexistence requirement for the same region to inter-regions; and transmitting an uplink signal through the configured RF unit.