Method and apparatus for scheduling plurality of resources in NR V2X

1. A method for performing, by a first device, wireless communication, the method comprising:

determining a first physical sidelink shared channel (PSSCH) resource, a second PSSCH resource and a third PSSCH resource; and

transmitting, to a second device, a sidelink control information (SCI) including information related to frequency domains of the second PSSCH resource and the third PSSCH resource, based on a first physical sidelink control channel (PSCCH) resource related to the first PSSCH resource,

wherein the information related to frequency domains is obtained based on a number of subchannels included in a resource pool, an index of a starting subchannel of the second PSSCH resource, an index of a starting subchannel of the third PSSCH resource, and a number of subchannels allocated for each of PSSCH resources,

wherein the information related to frequency domains is a zero or a positive integer,

wherein the information related to frequency domains increases based on an increase in the index of the starting subchannel of the second PSSCH resource or the index of the starting subchannel of the third PSSCH resource, and

wherein the information related to frequency domains increases based on an increase in the number of sub channels allocated for each of the PSSCH resources.

2. The method of claim 1 , wherein the information related to frequency domains represents a combination of the index of the starting subchannel of the second PSSCH resource, the index of the starting subchannel of the third PSSCH resource, and the number of subchannels allocated for each of the PSSCH resources.

3. The method of claim 1 , wherein, based on each of the PSSCH resources including N subchannels, the information related to frequency domains increases in an ascending order of the index of the starting subchannel of the second PSSCH resource, and then increases in an ascending order of the index of the starting subchannel of the third PSSCH resource,

wherein, based on the index of the starting subchannel reaching a maximum value, N increases to N+1,

wherein, based on each of the PSSCH resources including N+1 subchannels, the information related to frequency domains increases in an ascending order of the index of the starting subchannel of the second PSSCH resource, and then increases in an ascending order of the index of the starting subchannel of the third PSSCH resource, and

wherein N is a positive integer.

4. The method of claim 1 , wherein the first PSSCH resource is a resource located in a time domain before the second PSSCH resource and the third PSSCH resource,

wherein the PSSCH resources includes the first PSSCH resource, the second PSSCH resource and the third PSSCH resource, and

wherein each of the PSSCH resources includes the same number of subchannels.

5. The method of claim 1 , wherein the first PSSCH resource is a resource located in a time domain after the second PSSCH resource or the third PSSCH resource,

wherein the PSSCH resources includes the first PSSCH resource, the second PSSCH resource and the third PSSCH resource, and

wherein each of the PSSCH resources includes the same number of subchannels.

6. The method of claim 1 , wherein the first PSSCH resource, the second PSSCH resource, and the third PSSCH resource are determined based on sensing.

7. The method of claim 1 , further comprising:

receiving, from a base station, information related to the first PSSCH resource, the second PSSCH resource, and the third PSSCH resource,

wherein the first PSSCH resource, the second PSSCH resource and the third PSSCH resource are determined based on the information.

8. The method of claim 1 , wherein the SCI includes information related to time domains of the second PSSCH resource and the third PSSCH resource, and

wherein the information related to time domains is a zero or a positive integer.

9. The method of claim 8 , wherein the information related to time domains is obtained based on a number of slots between the first PSSCH resource and the second PSSCH resource, a number of slots between the first PSSCH resource and the third PSSCH resource, and a number of slots included in a window, and

wherein the first PSSCH resource is a resource located in a time domain before the second PSSCH resource and the third PSSCH resource.

10. The method of claim 8 , wherein the information related to time domains is obtained based on a number of slots between the second PSSCH resource and the first PSSCH resource, a number of slots between the second PSSCH resource and the third PSSCH resource, and a number of slots included in a window, and

wherein the second PSSCH resource is a resource located in a time domain before the first PSSCH resource and the third PSSCH resource.

11. A method for performing, by a first device, wireless communication, the method comprising:

determining a first physical sidelink shared channel (PSSCH) resource and a second PSSCH resource; and

transmitting, to a second device, a sidelink control information (SCI) including information related to a frequency domain of the second PSSCH resource, based on a first physical sidelink control channel (PSCCH) resource related to the first PSSCH resource,

wherein the information related to the frequency domain of the second PSSCH resource is obtained based on a number of subchannels included in a resource pool, an index of a starting subchannel of the second PSSCH resource, and a number of subchannels allocated for the second PSSCH resource,

wherein the information related to the frequency domain of the second PSSCH resource is obtained based on following equations,

the information related to the frequency domain=S 2 , if m=1

the information related to the frequency domain=

∑

n

=

1

m

-

1

⁢

(

M

+

1

-

n

)

+

S

2

,

if

⁢

⁢

m

>

1

wherein, m is the number of subchannels allocated for the second PSSCH resource, M is the number of subchannels included in the resource pool, and S 2 is the index of the starting subchannel of the second PSSCH resource.

12. The method of claim 11 , wherein the information related to the frequency domain of the second PSSCH resource represents a combination of the index of the starting subchannel of the second PSSCH resource and the number of subchannels allocated for the second PSSCH resource.

13. A first device configured to perform wireless communication, the first device comprising:

one or more memories storing instructions;

one or more transceivers; and

one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to:

determine a first physical sidelink shared channel (PSSCH) resource, a second PSSCH resource and a third PSSCH resource; and

transmit, to a second device, a sidelink control information (SCI) including information related to frequency domains of the second PSSCH resource and the third PSSCH resource, based on a first physical sidelink control channel (PSCCH) resource related to the first PSSCH resource,

wherein the information related to frequency domains is obtained based on a number of subchannels included in a resource pool, an index of a starting subchannel of the second PSSCH resource, an index of a starting subchannel of the third PSSCH resource, and a number of subchannels allocated for each of PSSCH resources,

wherein the information related to frequency domains is a zero or a positive integer,

wherein the information related to frequency domains increases based on an increase in the index of the starting subchannel of the second PSSCH resource or the index of the starting subchannel of the third PSSCH resource, and

wherein the information related to frequency domains increases based on an increase in the number of sub channels allocated for each of the PSSCH resources.

14. The first device of claim 13 , wherein the information related to frequency domains represents a combination of the index of the starting subchannel of the second PSSCH resource, the index of the starting subchannel of the third PSSCH resource, and the number of subchannels allocated for each of the PSSCH resources.

15. The first device of claim 13 , wherein, based on each of the PSSCH resources including N subchannels, the information related to frequency domains increases in an ascending order of the index of the starting subchannel of the second PSSCH resource, and then increases in an ascending order of the index of the starting subchannel of the third PSSCH resource,

wherein, based on the index of the starting subchannel reaching a maximum value, N increases to N+1,

wherein, based on each of the PSSCH resources including N+1 subchannels, the information related to frequency domains increases in an ascending order of the index of the starting subchannel of the second PSSCH resource, and then increases in an ascending order of the index of the starting subchannel of the third PSSCH resource, and

wherein N is a positive integer.

16. The first device of claim 13 , wherein the first PSSCH resource is a resource located in a time domain before the second PSSCH resource and the third PSSCH resource,

wherein the PSSCH resources includes the first PSSCH resource, the second PSSCH resource and the third PSSCH resource, and

wherein each of the PSSCH resources includes the same number of subchannels.

17. The first device of claim 13 , wherein the SCI includes information related to time domains of the second PSSCH resource and the third PSSCH resource,

wherein the information related to time domains is a zero or a positive integer,

wherein the information related to time domains is obtained based on a number of slots between the first PSSCH resource and the second PSSCH resource, a number of slots between the first PSSCH resource and the third PSSCH resource, and a number of slots included in a window, and

wherein the first PSSCH resource is a resource located in a time domain before the second PSSCH resource and the third PSSCH resource.