Method and apparatus for transmitting and receiving a signal in a wireless communication system

Patent metadata

Field	Value
Publication number	US-2021391972-A1
Application number	US-202117342905-A
Country	US
Kind code	A1
Filing date	Jun 9, 2021
Priority date	Jun 16, 2020
Publication date	Dec 16, 2021
Grant date	—

Abstract

A method of operating a user equipment (UE) in a wireless communication system is provided. The method includes obtaining resource allocation indication information from a base station through a control channel, determining a UE operation mode based on the resource allocation indication information, transmitting an uplink signal by allocating physical uplink shared channel (PUSCH) resource based on a physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) received from the base station, when the UE operation mode is a full duplex multiplexing radio (FDR) mode, performing self-interference channel estimation based on a PUSCH DMRS resource location, and performing reception channel estimation based on the PDSCH DMRS and demodulating data.

First claim

What is claimed is:

1 . A method of operating a user equipment (UE) in a wireless communication system, the method comprising:
obtaining resource allocation indication information from a base station through a control channel; determining a UE operation mode based on the resource allocation indication information; transmitting an uplink signal by allocating physical uplink shared channel (PUSCH) resource based on a physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) received from the base station, when the UE operation mode is a full duplex multiplexing radio (FDR) mode; performing self-interference channel estimation based on a PUSCH DMRS resource location; and performing reception channel estimation based on the PDSCH DMRS and demodulating data, wherein the PUSCH is punctured at a location corresponding to the PDSCH DMRS resource and a PDSCH is punctured at a location corresponding to the PUSCH DMRS resource.

2 . The method of claim 1 , wherein, when the self-interference channel estimation is performed based on the PUSCH DMRS resource, estimation, cancellation and reconstruction of a self-interference signal are performed based on the punctured PDSCH.

3 . The method of claim 1 , wherein, when the reception channel estimation is performed based on the PDSCH DMRS resource, the reception channel estimation is performed in consideration of the punctured PUSCH.

4 . The method of claim 1 ,
wherein the UE operation mode is set to the FDR mode, when the resource allocation indication information has a first value, and wherein the UE operation mode is set to a half duplex multiplexing radio (HDR) mode, when the resource allocation indication information has a second value.

5 . The method of claim 4 , wherein, when the UE operation mode is a half duplex multiplexing radio (HDF) mode, the PUSCH is not punctured at a location corresponding to the PDSCH DMRS resource and a PDSCH is not punctured at a location corresponding to the PUSCH DMRS resource.

6 . The method of claim 1 , wherein the control channel further comprises resource allocation information of at least one of the PDSCH, the PDSCH DMRS, the PUSCH or the PUSCH DMRS.

7 . The method of claim 1 , wherein, when the UE performs initial connection with the base station, capability information of the UE mode is exchanged.

8 . The method of claim 7 , wherein, when the UE supports the FDR mode based on capability information of the UE mode, the base station determines the UE mode in consideration of at least one of quality of a link with the UE or a channel environment and generates the resource allocation indication information.

9 . A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and a processor connected to the transceiver, wherein the processor is configured to: obtain resource allocation indication information from a base station through a control channel; determine a UE operation mode based on the resource allocation indication information; transmit an uplink signal by allocating physical uplink shared channel (PUSCH) resource based on a physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) received from the base station, when the UE operation mode is a full duplex multiplexing radio (FDR) mode; perform self-interference channel estimation based on a PUSCH DMRS resource location; and perform reception channel estimation based on the PDSCH DMRS and demodulating data, wherein the PUSCH is punctured at a location corresponding to the PDSCH DMRS resource and a PDSCH is punctured at a location corresponding to the PUSCH DMRS resource.

10 . A method of operating a base station in a wireless communication system, the method comprising:
determining an operation mode of the base station; transmitting resource allocation indication information to a user equipment (UE) through a control channel based on the determined operation mode of the base station; transmitting a downlink signal by allocating physical downlink shared channel (PDSCH) resource based on a physical uplink shared channel (PUSCH) demodulation reference signal (DMRS) received from the UE, when the base station operation mode is an FDR mode; and perform self-interference channel estimation based on a PDSCH DMRS resource location, wherein the PUSCH is punctured at a location corresponding to the PDSCH DMRS resource and a PDSCH is punctured at a location corresponding to the PUSCH DMRS resource.

11 . The method of claim 10 , wherein, when the self-interference channel estimation is performed based on the PDSCH DMRS resource, estimation, cancellation and reconstruction of a self-interference signal are performed based on the punctured PUSCH.

12 . The method of claim 10 , where, when the reception channel estimation is performed based on the PUSCH DMRS resource, the reception channel estimation is performed in consideration of the punctured PDSCH.

13 . The method of claim 10 ,
wherein the base station operation mode is set to the FDR mode when the resource allocation indication information has a first value, and wherein the base station operation mode is set to a half duplex multiplexing radio (HDR) mode when the resource allocation indication information has a second value.

14 . The method of claim 13 , wherein, when the base station operation mode is a half duplex multiplexing radio (HDF) mode, the PDSCH is not punctured at a location corresponding to the PUSCH DMRS resource and a PUSCH is not punctured at a location corresponding to the PDSCH DMRS resource.

15 . The method of claim 10 , wherein the control channel further comprises resource allocation information of at least one of the PDSCH, the PDSCH DMRS, the PUSCH or the PUSCH DMRS.

Assignees

• Lg Electronics Inc

Inventors

• Mun Chul Kyu
• Kim Woochan

Classifications

• H04L25/023

  with extension to other symbols · CPC title

• H04L25/0226

  sounding signals per se · CPC title

• H04L5/14

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L1/0001 Primary

  Systems modifying transmission characteristics according to link quality, e.g. power backoff (adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04) · CPC title