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 performing, by a first device, wireless communication, the method comprising:
receiving, from a second device, system information including sidelink (SL) time division duplex (TDD) configuration through a physical sidelink broadcasting channel (PSBCH),
wherein the SL TDD configuration is indicated by a bit sequence consisting of bit values from a0 to a11 in a payload of the PSBCH;
determining a first pattern and a second pattern being provided by the SL TDD configuration based on the a0 being 1;
obtaining a first slot configuration period of the first pattern, a second slot configuration period of the second pattern, and granularity in slots with different subcarrier spacing (SCS) based on the a1 to the a4; and
obtaining a number of first sidelink slots of the first pattern and a number of second sidelink slots of the second pattern from the a5 to the a11, based on the first slot configuration period, an SCS, the granularity.
2 . The method of claim 1 , wherein the number of the first slots and the number of the second slots are expressed based on a unit counting a plurality of slots as one.
3 . The method of claim 1 , wherein the reference SCS is an SCS divided by a number of powers of 2 from the SCS.
4 . The method of claim 3 , wherein the number of powers of 2 is a value related to the granularity.
5 . The method of claim 3 , wherein based on sum of the first slot configuration period and the second slot configuration period being 4 ms and the SCS being 120 kHz, the number of powers of 2 is 2.
6 . The method of claim 3 , wherein based on sum of the first slot configuration period and the second slot configuration period being 5 ms and the SCS being 120 kHz, the number of powers of 2 is 2.
7 . The method of claim 3 , wherein based on the first slot configuration period being 5 ms, the second slot configuration period being 5 ms, and the SCS being 60 kHz, the number of powers of 2 is 2.
8 . The method of claim 3 , wherein based on the first slot configuration period being 10 ms, the second slot configuration period being 10 ms, and the SCS being 30 kHz, the number of powers of 2 is 2.
9 . The method of claim 3 , wherein based on the first slot configuration period being 5 ms, the second slot configuration period being 5 ms, and the SCS being 120 kHz, the number of powers of 2 is 4.
10 . The method of claim 3 , wherein based on the first slot configuration period being 10 ms, the second slot configuration period being 10 ms, and the SCS being 60 kHz, the number of powers of 2 is 4.
11 . The method of claim 3 , wherein based on the first slot configuration period being 10 ms, the second slot configuration period being 10 ms, and the SCS being 120 kHz, the number of powers of 2 is 8.
12 . A first device for performing 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:
receive, from a second device, system information including sidelink (SL) time division duplex (TDD) configuration through a physical sidelink broadcasting channel (PSBCH),
wherein the SL TDD configuration is indicated by a bit sequence consisting of bit values from a0 to a11 in a payload of the PSBCH;
determine a first pattern and a second pattern being provided by the SL TDD configuration based on the a0 being 1;
obtain a first slot configuration period of the first pattern, a second slot configuration period of the second pattern, and granularity in slots with different subcarrier spacing (SCS) based on the a1 to the a4; and
obtain a number of first sidelink slots of the first pattern and a number of second sidelink slots of the second pattern from the a5 to the a11, based on the first slot configuration period, an SCS, the granularity.
13 . The first device of claim 12 , wherein the number of the first sidelink slots and the number of the second sidelink slots are expressed based on a unit counting a plurality of slots as one.
14 . A device configured to control a first user equipment (UE), the device 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, from a second UE, system information including sidelink (SL) time division duplex (TDD) configuration through a physical sidelink broadcasting channel (PSBCH),
wherein the SL TDD configuration is indicated by a bit sequence consisting of bit values from a0 to a11 in a payload of the PSBCH;
determine a first pattern and a second pattern being provided by the SL TDD configuration based on the a0 being 1;
obtain a first slot configuration period of the first pattern, a second slot configuration period of the second pattern, and granularity in slots with different subcarrier spacing (SCS) based on the a1 to the a4; and
obtain a number of first sidelink slots of the first pattern and a number of second sidelink slots of the second pattern from the a5 to the a11, based on the first slot configuration period, an SCS, the granularity.
15 . The device of claim 14 , wherein the number of the first sidelink slots and the number of the second sidelink slots are expressed based on a unit counting a plurality of slots as one.