Method for transmitting/receiving channel by using guard band in one carrier in wireless communication system, and device therefor

Patent metadata

Field	Value
Publication number	US-11641656-B2
Application number	US-202217738004-A
Country	US
Kind code	B2
Filing date	May 6, 2022
Priority date	Nov 7, 2019
Publication date	May 2, 2023
Grant date	May 2, 2023

Abstract

A method for receiving a downlink channel by a terminal in a wireless communication system includes: receiving, from a base station, first information related to a guard band in a first resource region located in one carrier; receiving, from the base station, second information related to multiple resource sets, each of which is identified by the guard band in the first resource region on the basis of the first information; and receiving, from the base station, a downlink channel on a resource indicated by the second information to be available for reception of the downlink channel.

First claim

The invention claimed is:

1. A method for use by a user equipment in a wireless communication system, the method comprising:
receiving, from a base station, information related to one or more control resource sets (CORESETs);
receiving, from the base station, a first downlink control information (DCI) including bitmap by monitoring in a first CORESET among the one or more CORESETs,
wherein each bit of the bitmap indicates whether each of one or more first sub-bands is available for downlink channel transmission;
receiving, from the base station, a second DCI including scheduling information for uplink channel transmission in a cell including a plurality of sub-bands and one or more guard-bands; and
transmitting, to the base station, uplink channel based on the second DCI,
wherein each of the one or more guard-bands is located between adjacent sub-bands in a frequency domain.

2. The method of claim 1 ,
wherein the second DCI is received on a second CORESET,
wherein the second CORESET is included in at least one of sub-band among one or more second sub-bands indicated to be available for the downlink channel transmission.

3. The method of claim 1 ,
wherein when the uplink channel is scheduled to be transmitted on at least two adjacent sub-bands in the frequency domain, a resource allocated for a guard-band located between the at least two adjacent sub-bands in the frequency domain is used for transmission of the uplink channel.

4. The method of claim 1 ,
wherein when the uplink channel is scheduled to be transmitted on only one sub-band, a resource allocated for a guard-band is not used for transmission of the uplink channel.

5. The method of claim 1 ,
wherein the first DCI is group-common DCI (GC DCI).

6. The method of claim 1 ,
wherein the one or more first sub-bands are configured through radio resource control (RRC) signal.

7. The method of claim 1 ,
wherein each of the one or more first sub-bands are a unit for channel access in an unlicensed band.

8. A user equipment (UE) in a wireless communication system, the UE comprising,
a transceiver; and
a processor functionally connected to the transceiver,
wherein the processor is configured to:
receive, from a base station, information related to one or more control resource sets (CORESETs),
receive, from the base station, a first downlink control information (DCI) including bitmap by monitoring in a first CORESET among the one or more CORESETs,
wherein each bit of the bitmap indicates whether each of one or more first sub-bands is available for downlink channel transmission,
receive, from the base station, a second DCI including scheduling information for uplink channel transmission in a cell including a plurality of sub-bands and one or more guard-bands; and
transmit, to the base station, uplink channel based on the second DCI,
wherein each of the one or more guard-bands is located between adjacent sub-bands in a frequency domain.

9. The UE of claim 8 ,
wherein the second DCI is received on a second CORESET,
wherein the second CORESET is included in at least one of sub-band among one or more second sub-bands indicated to be available for the downlink channel transmission.

10. The UE of claim 8 ,
wherein when the uplink channel is scheduled to be transmitted on at least two adjacent sub-bands in the frequency domain, a resource allocated for a guard-band located between the at least two adjacent sub-bands in the frequency domain is used for transmission of the uplink channel.

11. The UE of claim 8 ,
wherein when the uplink channel is scheduled to be transmitted on only one sub-band, a resource allocated for a guard-band is not used for transmission of the uplink channel.

12. The UE of claim 8 ,
wherein the first DCI is group-common DCI (GC DCI).

13. The UE of claim 8 ,
wherein the one or more first sub-bands are configured through radio resource control (RRC) signal.

14. The UE of claim 8 ,
wherein each of the one or more first sub-bands are a unit for channel access in an unlicensed band.

15. A method for use by a base station in a wireless communication system, the method comprising:
transmitting, to a user equipment (UE), information related to one or more control resource sets (CORESETs);
transmitting, to the UE, a first downlink control information (DCI) including bitmap on a first CORESET among the one or more CORESETs,
wherein each bit of the bitmap indicates whether each of one or more first sub-bands is available for downlink channel transmission;
transmitting, to the UE, a second DCI including scheduling information for the uplink channel transmission in a cell including a plurality of sub-bands and one or more guard-bands; and
receiving, from the UE, uplink channel transmission based on the second DCI,
wherein each of the one or more guard-bands is located between adjacent sub-bands in a frequency domain.

16. The method of claim 15 ,
wherein the second DCI is received on a second CORESET,
wherein the second CORESET is included in at least one of sub-band among one or more second sub-bands indicated to be available for the downlink channel transmission.

17. The method of claim 15 ,
wherein when the uplink channel is scheduled to be transmitted on at least two adjacent sub-bands in the frequency domain, a resource allocated for a guard-band located between the at least two adjacent sub-bands in the frequency domain is used for transmission of the uplink channel.

18. The method of claim 15 ,
wherein when the uplink channel is scheduled to be transmitted on only one sub-band, a resource allocated for a guard-band is not used for transmission of the uplink channel.

19. The method of claim 15 ,
wherein the first DCI is group-common DCI (GC DCI).

20. The method of claim 15 ,
wherein the one or more first sub-bands are configured through radio resource control (RRC) signal.

Assignees

• Wilus Inst Standards & Tech Inc

Inventors

• Noh Minseok
• Choi Kyungjun
• Kwak Jinsam

Classifications

• H04L27/2605

  Symbol extensions, e.g. Zero Tail, Unique Word [UW] · CPC title

• H04W72/1273

  of downlink data flows · CPC title

• H04W72/231

  the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling · CPC title

• H04W72/232 Primary

  the control data signalling from the physical layer, e.g. DCI signalling · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title