Method and device for transmitting information related to SL slot in NR V2X
Proposed is an operation method of a first device in a wireless communication system. The method may comprise the steps of: receiving, from a base station, TDD-UL-DL configuration information including information related to a first slot pattern and information related to a second slot pattern; acquiring the number of first SL slots related to the first slot pattern and the number of second SL slots related to the second slot pattern on the basis of first SCS related to SL communication and the TDD-UL-DL configuration information; and transmitting, to a second device, a PSBCH including information related to the number of the first SL slots and information related to the number of the second SL slots.
1. A method for a first apparatus to perform wireless communication, the method comprising:
receiving a physical sidelink broadcast channel (PSBCH) including information related to a period of a first slot pattern, information related to a period of a second slot pattern, information related to the number of first sidelink (SL) slots related to the first slot pattern, and information related to the number of second SL slots related to the second slot pattern from a second apparatus;
obtaining the number of the first SL slots and the number of the second SL slots from the information related to the number of the first SL slots and the information related to the number of the second SL slots, based on i) the information related to the period of the first slot pattern, ii) the information related to the period of the second slot pattern, and iii) a first subcarrier spacing (SCS) related to SL communication; and
performing the SL communication based on the number of the first SL slots and the number of the second SL slots,
wherein the information related to the number of the first SL slots and the information related to the number of the second SL slots are expressed based on a unit counting a plurality of slots as one unit.
2. The method of claim 1 , wherein the unit counting the plurality of slots as one unit is a unit counting slots related to a second SCS lower than the first SCS as one unit.
3. The method of claim 2 , wherein the second SCS is an SCS divided by a number of powers of 2 from the first SCS.
4. The method of claim 3 , wherein the number of powers of 2 is a value related to granularity of a slot.
5. The method of claim 3 , wherein based on that the sum of the period of the first slot pattern and the period of the second slot pattern is 4 ms and the first SCS is 120 kHz, the number of powers of 2 is 2.
6. The method of claim 3 , wherein based on that the sum of the period of the first slot pattern and the period of the second slot pattern is 5 ms and the first SCS is 120 kHz, the number of powers of 2 is 2.
7. The method of claim 3 , wherein based on that the period of the first slot pattern is 5 ms, the period of the second slot pattern is 5 ms, and the first SCS is 60 kHz, the number of powers of 2 is 2.
8. The method of claim 3 , wherein based on that the period of the first slot pattern is 10 ms, the period of the second slot pattern is 10 ms, and the first SCS is 30 kHz, the number of powers of 2 is 2.
9. The method of claim 3 , wherein based on that the period of the first slot pattern is 5 ms, the period of the second slot pattern is 5 ms, and the first SCS is 120 kHz, the number of powers of 2 is 4.
10. The method of claim 3 , wherein based on that the period of the first slot pattern is 10 ms, the period of the second slot pattern is 10 ms, and the first SCS is 60 kHz, the number of powers of 2 is 4.
11. The method of claim 3 , wherein based on that the period of the first slot pattern is 10 ms, the period of the second slot pattern is 10 ms, and the first SCS is 120 kHz, the number of powers of 2 is 8.
12. A first apparatus for performing wireless communication, the first apparatus 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:
receive a physical sidelink broadcast channel (PSBCH) including information related to a period of a first slot pattern, information related to a period of a second slot pattern, information related to the number of first sidelink (SL) slots related to the first slot pattern, and information related to the number of second SL slots related to the second slot pattern from a second apparatus;
obtain the number of the first SL slots and the number of the second SL slots from the information related to the number of the first SL slots and the information related to the number of the second SL slots, based on i) the information related to the period of the first slot pattern, ii) the information related to the period of the second slot pattern, and iii) a first subcarrier spacing (SCS) related to SL communication; and
perform the SL communication based on the number of the first SL slots and the number of the second SL slots,
wherein the information related to the number of the first SL slots and the information related to the number of the second SL slots are expressed based on a unit counting a plurality of slots as one unit.
13. The first apparatus of claim 12 , wherein the unit counting the plurality of slots as one unit is a unit counting slots related to a second SCS lower than the first SCS as one unit.
14. The first apparatus of claim 13 , wherein the second SCS is an SCS divided by a number of powers of 2 from the first SCS.
15. The first apparatus of claim 14 , wherein the number of powers of 2 is a value related to granularity of a slot.
16. The first apparatus of claim 14 , wherein based on that the sum of the period of the first slot pattern and the period of the second slot pattern is 4 ms and the first SCS is 120 kHz, the number of powers of 2 is 2,
wherein based on that the sum of the period of the first slot pattern and the period of the second slot pattern is 5 ms and the first SCS is 120 kHz, the number of powers of 2 is 2,
wherein based on that the period of the first slot pattern is 5 ms, the period of the second slot pattern is 5 ms, and the first SCS is 60 kHz, the number of powers of 2 is 2,
wherein based on that the period of the first slot pattern is 10 ms, the period of the second slot pattern is 10 ms, and the first SCS is 30 kHz, the number of powers of 2 is 2,
wherein based on that the period of the first slot pattern is 5 ms, the period of the second slot pattern is 5 ms, and the first SCS is 120 kHz, the number of powers of 2 is 4,
wherein based on that the period of the first slot pattern is 10 ms, the period of the second slot pattern is 10 ms, and the first SCS is 60 kHz, the number of powers of 2 is 4, and
wherein based on that the period of the first slot pattern is 10 ms, the period of the second slot pattern is 10 ms, and the first SCS is 120 kHz, the number of powers of 2 is 8.
17. An apparatus configured to control a first user equipment (UE), the apparatus comprising:
one or more processors; and
one or more memories operably connectable to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to:
receive a physical sidelink broadcast channel (PSBCH) including information related to a period of a first slot pattern, information related to a period of a second slot pattern, information related to the number of first sidelink (SL) slots related to the first slot pattern, and information related to the number of second SL slots related to the second slot pattern from a second UE;
obtain the number of the first SL slots and the number of the second SL slots from the information related to the number of the first SL slots and the information related to the number of the second SL slots, based on i) the information related to the period of the first slot pattern, ii) the information related to the period of the second slot pattern, and iii) a first subcarrier spacing (SCS) related to SL communication; and
perform the SL communication based on the number of the first SL slots and the number of the second SL slots,
wherein the information related to the number of the first SL slots and the information related to the number of the second SL slots are expressed based on a unit counting a plurality of slots as one unit.
18. The apparatus of claim 17 , wherein the unit counting the plurality of slots as one unit is a unit counting slots related to a second SCS lower than the first SCS as one unit, and
wherein the second SCS is an SCS divided by a number of powers of 2 from the first SCS.
19. The apparatus of claim 18 , wherein the number of powers of 2 is a value related to granularity of a slot.
20. The apparatus of claim 18 , wherein based on that the sum of the period of the first slot pattern and the period of the second slot pattern is 4 ms and the first SCS is 120 kHz, the number of powers of 2 is 2,
wherein based on that the sum of the period of the first slot pattern and the period of the second slot pattern is 5 ms and the first SCS is 120 kHz, the number of powers of 2 is 2,
wherein based on that the period of the first slot pattern is 5 ms, the period of the second slot pattern is 5 ms, and the first SCS is 60 kHz, the number of powers of 2 is 2,
wherein based on that the period of the first slot pattern is 10 ms, the period of the second slot pattern is 10 ms, and the first SCS is 30 kHz, the number of powers of 2 is 2,
wherein based on that the period of the first slot pattern is 5 ms, the period of the second slot pattern is 5 ms, and the first SCS is 120 kHz, the number of powers of 2 is 4,
wherein based on that the period of the first slot pattern is 10 ms, the period of the second slot pattern is 10 ms, and the first SCS is 60 kHz, the number of powers of 2 is 4, and
wherein based on that the period of the first slot pattern is 10 ms, the period of the second slot pattern is 10 ms, and the first SCS is 120 kHz, the number of powers of 2 is 8.