Method for assigning PTRS for phase noise removal in wireless communication system, and device therefor
A method for a base station to transmit a signal allowing a terminal to remove phase noise in an mmWave communication system, according to an embodiment of the present specification, may be provided. Here, the method for transmitting a signal for removing phase noise comprises: a step of generating a phase tracking reference signal (PTRS) and a first RS; a step of assigning the PTRS and the first RS to a resource block; and a step of transmitting the assigned PTRS and first RS, wherein the step of assigning the PTRS and the first RS includes a step of changing a frequency location of the PTRS if the PTRS and the first RS collide in the resource block, wherein the changed PTRS frequency location may be changed to a frequency location, across frequencies on which a predetermined demodulation reference signal (DMRS) port, associated with the PTRS, in a DMRS port group is located, which is closest to the existing PTRS frequency location and avoids collision with the first RS.
1. A method of transmitting a reference signal by a base station in a wireless communication system, the method comprising:
transmitting configuration information including information on a resource region of a zero power channel state information-reference signal (CSI-RS);
generating a phase tracking reference signal (PTRS);
allocating the PTRS to a resource block and
transmitting the allocated PTRS,
wherein when a resource region to which the PTRS is allocated collides with the resource region of the zero power CSI-RS within the resource block, the PTRS is not transmitted in a colliding resource region.
2. The method of claim 1 , wherein when the resource region to which the PTRS is allocated collides with the resource region of the zero power CSI-RS within the resource block, the PTRS is not allocated to the colliding resource region.
3. The method of claim 1 , wherein when the resource region to which the PTRS is allocated collides with the resource region of the zero power CSI-RS within the resource block, the zero power CSI-RS is transmitted in the colliding resource region.
4. The method of claim 1 , wherein the configuration information including the information on the resource region of the zero power CSI-RS is transmitted in at least one of radio resource control (RRC) and a downlink control indicator (DCI).
5. A base station for transmitting a reference signal in a wireless communication system, the base station comprising:
a transmitter configured to transmit a signal; and
a processor configured to control the transmitter,
wherein the processor is configured to:
control the transmitter to transmit configuration information including information on a resource region of a zero power channel state information-reference signal (CSI-RS);
generate a phase tracking reference signal (PTRS);
allocate the PTRS to a resource block and transmit the allocated PTRS, and
wherein when a resource region to which the PTRS is allocated collides with the resource region of the zero power CSI-RS within the resource block, the PTRS is not transmitted in a colliding resource region.
6. The base station of claim 5 , wherein when the resource region to which the PTRS is allocated collides with the resource region of the zero power CSI-RS within the resource block, the PTRS is not allocated to the colliding resource region.
7. The base station of claim 5 , wherein when the resource region to which the PTRS is allocated collides with the resource region of the zero power CSI-RS within the resource block, the zero power CSI-RS is transmitted in the colliding resource region.
8. The base station of claim 5 , wherein the configuration information including the information on the resource region of the zero power CSI-RS is transmitted in at least one of radio resource control (RRC) and a downlink control indicator (DCI).