TECHNICAL FIELD

The present disclosure relates to a wireless communication system, and particularly, to a method for performing channel estimation a Demodulation Reference Signal (DMRS) and an apparatus for supporting the same.

BACKGROUND ART

A mobile communication system has been developed to provide a voice service while ensuring an activity of a user. However, in the mobile communication system, not only a voice but also a data service is extended. At present, due to an explosive increase in traffic, there is a shortage of resources and users demand a higher speed service, and as a result, a more developed mobile communication system is required.

Requirements of a next-generation mobile communication system should be able to support acceptance of explosive data traffic, a dramatic increase in per-user data rate, acceptance of a significant increase in the number of connected devices, very low end-to-end latency, and high-energy efficiency. To this end, various technologies are researched, which include dual connectivity, massive multiple input multiple output (MIMO), in-band full duplex, non-orthogonal multiple access (NOMA), super wideband support, device networking, and the like.

DISCLOSURE

Technical Problem

The present disclosure has been made in an effort to provide a method for performing channel estimation using a Demodulation Reference signal (DMRS) in a wireless communication system.

Furthermore, the present disclosure has been made in an effort to provide a method for shifting a resource block (RB) in units of bundling.

The technical objects of the present disclosure are not limited to the aforementioned technical objects, and other technical objects, which are not mentioned above, will be apparently appreciated by a person having ordinary skill in the art from the following description.

Technical Solution

In an aspect, provided is a method for performing channel estimation using a Demodulation Reference signal (DMRS) in a wireless communication system, which is performed by a base station.

Specifically, the method, which is performed by the base station includes: when a collision between a DMRS symbol and a synchronization signal block (SSB) occurs, shifting a resource block (RB) of the DMRS symbol where the collision occurs, and all REs bundled with the RE of the DMRS symbol where the collision occurs; transmitting information on the shifted REs to a terminal; and transmitting the DMRS to the terminal on the shifted REs.

Furthermore, in the present disclosure, the RB where the collision occurs and all RBs bundled with the RB where the collision occurs are shifted until the collision does not occur.

Furthermore, in the present disclosure, the RB where the collision occurs and all RBs bundled with the RB where the collision occurs are shifted in a data region.

Furthermore, in another aspect, provided is a method for performing channel estimation using a Demodulation Reference signal (DMRS) in a wireless communication system, which is performed by a terminal, including: receiving a Synchronization Signal Block (SSB) from a base station; receiving the DMRS from the base station; when a collision between the SSB and a DMRS symbol occurs, receiving, from the base station, information on an RB configured by shifting a resource block (RB) of the DMRS symbol where the collision occurs, and all RBs bundled with the RB of the DMRS symbol where the collision occurs; and performing the channel estimation by using the received RB.

Furthermore, in yet another aspect, provided is a base station for performing a method for performing channel estimation using a Demodulation Reference signal (DMRS) in a wireless communication system, including: a radio frequency (RF) module transmitting and receiving a radio signal; and a processor functionally connected with the RF module, in which the processor is configured to when a collision between a DMRS symbol and a Synchronization Signal Block (SSB) occurs, shift a resource block (RB) of the DMRS symbol where the collision occurs, and all RBs bundled with the RB of the DMRS symbol where the collision occurs, transmit information on the shifted RBs to a terminal, and transmit the DMRS to the terminal on the shifted RBs.

Furthermore, in the present disclosure, the processor shifts the RB where the collision occurs and all RBs bundled with the RB where the collision occurs are shifted until the collision does not occur.

Furthermore, in the present disclosure, the processor shifts the RB where the collision occurs and all RBs bundled with the RB where the collision occurs are shifted in a data region.

Furthermore, in still yet another aspect, provided is a terminal performing a method for performing channel estimation using a Demodulation Reference signal (DMRS) in a wireless communication system, including: a radio frequency (RF) module transmitting and receiving a radio signal; and a processor functionally connected with the RF module, in which the processor is configured to receive a Synchronization Signal Block (SSB) from a base station, receive the DMRS from the base station, when a collision between the SSB and a DMRS symbol occurs, receive, from the base station, information on an RB configured by shifting a resource block (RB) of the DMRS symbol where the collision occurs, and all RBs bundled with the RB of the DMRS symbol where the collision occurs, and perform the channel estimation by using the received RB.

Advantageous Effects

The present disclosure as a method for performing channel estimation using a Demodulation Reference Signal (DMRS) has an effect of being capable of performing channel measurement in units of bundling by shifting an RB where a collision occurs and all bundled RBs.

It will be appreciated by persons skilled in the art that that the effects that could be achieved with the present disclosure are not limited to what has been particularly described hereinabove and other advantages of the present disclosure will be more clearly understood by a person skilled in the art to which the present disclosure pertains, from the following detailed description.

