Method and device for selecting SL transmission resource in NR V2X
Proposed is an operation method of a first device ( 100 ) in a wireless communication system. The method may comprise the steps of: selecting a first resource, a second resource, a third resource, and a fourth resource; on the basis of at least one of the first resource, the second resource, the third resource, and the fourth resource, transmitting sidelink control information (SCI) through a physical sidelink control channel (PSCCH) to a second device ( 200 ); and on the basis of at least one of the first resource, the second resource, the third resource, and the fourth resource, transmitting a physical sidelink shared channel (PSSCH) to the second device ( 200 ).
1. A method for performing, by a first apparatus, wireless communication, the method comprising:
selecting a first resource, a second resource, a third resource, and a fourth resource;
transmitting inter-apparatus control information to a second apparatus through an inter-apparatus physical control channel, based on at least one of the first resource, the second resource, the third resource, or the fourth resource; and
transmitting an inter-apparatus physical shared channel to the second apparatus, based on at least one of the first resource, the second resource, the third resource, or the fourth resource,
wherein the SCI includes information related to a first time gap and a second time gap,
wherein the first resource, the second resource, the third resource, and the fourth resource are selected based on the first time gap and the second time gap,
wherein the first time gap is smaller than the second time gap,
wherein the first resource includes 2 or more slots related to the first resource,
wherein the second resource includes 2 or more slots related to the second resource,
wherein the third resource includes 2 or more slots related to the third resource,
wherein the fourth resource includes 2 or more slots related to the fourth resource,
wherein a 1st slot among the 2 or more slots related to the first resource precedes a 1st slot among the 2 or more slots related to the second resource by the first time gap,
wherein a 1st slot among the 2 or more slots related to the third resource precedes a 1st slot among the 2 or more slots related to the fourth resource by the first time gap, and
wherein the 1st slot among the 2 or more slots related to the first resource precedes the 1st slot among the 2 or more slots related to the third resource by the second time gap.
2. The method of claim 1 , wherein the 2 or more slots related to the first resource are reserved adjacent to each other,
wherein the 2 or more slots related to the second resource are reserved adjacent to each other,
wherein the 2 or more slots related to the third resource are reserved adjacent to each other, and
wherein the 2 or more slots related to the fourth resource are reserved adjacent to each other.
3. The method of claim 2 , wherein a time gap between a last slot among the 2 or more slots related to the first resource and a last slot among the 2 or more slots related to the second resource is signaled together while performing the resource reservation.
4. The method of claim 1 ,
wherein a different inter-apparatus physical control channel is transmitted through each slot included in the 2 or more slots related to the first resource,
wherein a different inter-apparatus physical control channel is transmitted through each slot included in the 2 or more slots related to the second resource,
wherein a different inter-apparatus physical control channel is transmitted through each slot included in the 2 or more slots related to the third resource, and
wherein a different inter-apparatus physical control channel is transmitted through each slot included in the 2 or more slots related to the fourth resource.
5. The method of claim 1 , wherein the 1st slot among the 2 or more slots related to the first resource precedes 1st slot among the 2 or more slots related to the second resource by the first time gap,
wherein the 1st slot among the 2 or more slots related to the first resource precedes the 1st slot among the 2 or more slots related to the third resource by the second time gap,
wherein there is a third time gap between each slot included in the 2 or more slots related to the first resource,
wherein all of the 2 or more slots related to the first resource precedes the 1st slot among the 2 or more slots related to the third resource,
wherein there is the third time gap between each slot included in the 2 or more slots related to the second resource,
wherein all of the 2 or more slots related to the second resource precedes the 1st slot among the 2 or more slots related to the third resource, and
wherein the third time gap is greater than the first time gap.
6. The method of claim 5 , wherein 1st slot among the 2 or more slots related to the third resource precedes 1st slot among the 2 or more slots related to the first resource by the first time gap,
wherein there is the third gap between each slot included in the 2 or more slots related to the third resource, and
wherein there is the third gap between each slot included in the 2 or more slots related to the fourth resource.
7. The method of claim 5 , wherein the third time gap is twice the first time gap.
8. The method of claim 5 , wherein the third time gap is a sum of twice the first time gap and a delta value, and
wherein the delta value is signaled together while performing the resource reservation.
9. The method of claim 1 ,
wherein the inter-apparatus control information is related to a transmission block transmitted through the inter-apparatus communication,
wherein the first resource, the second resource, the third resource, and the fourth resource:
does not exceed a packet delay budget related to the transmission block; and
does not exceed a maximum number of transmission.
10. 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:
select a first resource, a second resource, a third resource, and a fourth resource;
transmit apparatus control information to a second apparatus through an inter-apparatus physical control channel, based on at least one of the first resource, the second resource, the third resource, or the fourth resource; and
transmit an inter-apparatus physical shared channel to the second apparatus, based on at least one of the first resource, the second resource, the third resource, or the fourth resource,
wherein the inter-apparatus control information SCI-includes information related to a first time gap and a second time gap,
wherein the first resource, the second resource, the third resource, and the fourth resource are selected based on the first time gap and the second time gap,
wherein the first time gap is smaller than the second time gap,
wherein the first resource includes 2 or more slots related to the first resource,
wherein the second resource includes 2 or more slots related to the second resource,
wherein the third resource includes 2 or more slots related to the third resource,
wherein the fourth resource includes 2 or more slots related to the fourth resource,
wherein a 1st slot among the 2 or more slots related to the first resource precedes a 1st slot among the 2 or more slots related to the second resource by the first time gap,
wherein a 1st slot among the 2 or more slots related to the third resource precedes a 1st slot among the 2 or more slots related to the fourth resource by the first time gap, and
wherein the 1st slot among the 2 or more slots related to the first resource precedes the 1st slot among the 2 or more slots related to the third resource by the second time gap.
11. 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:
select a first resource, a second resource, a third resource, and a fourth resource;
transmit inter-UE control information to a second UE through an inter-UE physical control channel, based on at least one of the first resource, the second resource, the third resource, or the fourth resource; and
transmit an inter-UE physical shared channel to the second UE, based on at least one of the first resource, the second resource, the third resource, and or fourth resource,
wherein the inter-UE control information includes information related to a first time gap and a second time gap,
wherein the first resource, the second resource, the third resource, and the fourth resource are selected based on the first time gap and the second time gap,
wherein the first time gap is smaller than the second time gap,
wherein the first resource includes 2 or more slots related to the first resource,
wherein the second resource includes 2 or more slots related to the second resource,
wherein the third resource includes 2 or more slots related to the third resource,
wherein the fourth resource includes 2 or more slots related to the fourth resource,
wherein a 1st slot among the 2 or more slots related to the first resource precedes a 1st slot among the 2 or more slots related to the second resource by the first time gap,
wherein a 1st slot among the 2 or more slots related to the third resource precedes a 1st slot among the 2 or more slots related to the fourth resource by the first time gap, and
wherein the 1st slot among the 2 or more slots related to the first resource precedes the 1st slot among the 2 or more slots related to the third resource by the second time gap.