User equipment and resource monitoring method using a re-evaluation and pre-emption checking procedure for determining a subset of resources in a slot for sidelink communications
View Patent ↗A user equipment (UE) and a resource monitoring method in sidelink communication are disclosed. The resource monitoring method in sidelink communication by the UE includes being triggered, by a higher layer, to determine a subset of resources in a first resource selection window as a part of a re-evaluation and pre-emption checking procedure, wherein the first resource selection window is within a set of candidate slots.
1 . A resource monitoring method in sidelink communication by a user equipment (UE), comprising:
being triggered, by a higher layer, to determine a subset of resources in a first resource selection window as a part of a re-evaluation and pre-emption checking procedure, wherein the first resource selection window is within a set of candidate slots; and
sensing slots of a sidelink resource pool within a time interval contiguously from a slot (m−31) to a slot (m−T 3 −T proc,0 ) to obtain sensing results as a part of a contiguous partial sensing, where the UE is triggered to determine the subset of resources in a slot (n) as the part of the re-evaluation and pre-emption checking procedure and m is a smallest candidate resource slot index after slot (n+T 3 ).
2 . The method of claim 1 , wherein the set of candidate slots of a length Y starting from a slot (t y 0 ) and/or ending at a slot (t y 0 +Y−1) is used in an initial resource selection.
3 . The method of claim 1 , wherein the first resource selection window is a remaining portion of the set of candidate slots.
4 . The method of claim 1 , wherein the time interval is within the set of candidate slots.
5 . The method of claim 1 , wherein the time interval is within the first resource selection window.
6 . The method of claim 1 , wherein the higher layer selects earliest resources or prioritize earlier resources within the subset of resources and/or the set of candidate slots for selection.
7 . The method of claim 1 , further comprising being triggered, by the higher layer, to determine the subset of resources in a second resource selection window as the part of the re-evaluation and pre-emption checking procedure.
8 . The method of claim 7 , wherein the second resource selection window exceeds an ending boundary of the set of candidate slots.
9 . The method of claim 8 , wherein the second resource selection window exceeds an ending boundary of the set of candidate slots for up to a slot
(
m
-
T
3
-
T
proc
,
0
SL
+
31
)
.
10 . The method of claim 9 , wherein a starting of the second resource selection window is a slot (m−T 3 +T 1 ), where T 1 is to be selected by the UE between 0 and
T
proc
,
1
SL
.
11 . The method of claim 9 , wherein a number of slots for
T
proc
,
0
SL
is selected from a set of values [1, 1, 2, 4] depending on a configured subcarrier spacing (SCS) for a sidelink bandwidth part in which the sidelink resource pool is configured.
12 . The method of claim 9 , wherein for the second resource selection window, t y 0 +Y−1−m is smaller or equal to 20% of Y.
13 . A user equipment (UE), comprising:
a memory;
a transceiver; and
a processor coupled to the memory and the transceiver;
wherein the processor is configured to:
be triggered, by a higher layer, to determine a subset of resources in a first resource selection window as a part of a re-evaluation and pre-emption checking procedure, and the first resource selection window is within a set of candidate slots; and
sense slots of a sidelink resource pool within a time interval contiguously from a slot (m−31) to a slot (m−T 3 −T proc,0 ) to obtain sensing results as a part of a contiguous partial sensing, where the UE is triggered to determine the subset of resources in a slot (n) as the part of the re-evaluation and pre-emption checking procedure and m is a smallest candidate resource slot index after slot (n+T 3 ).
14 . The UE of claim 13 , wherein the set of candidate slots of a length Y starting from a slot (t y 0 ) and/or ending at a slot (t y 0 +Y−1) is used in an initial resource selection.
15 . The UE of claim 13 , wherein the first resource selection window is a remaining portion of the set of candidate slots.
16 . The UE of claim 13 , wherein the time interval is within the set of candidate slots.
17 . The UE of claim 13 , wherein the time interval is within the first resource selection window.
18 . A non-transitory machine-readable storage medium having stored thereon instructions that, when executed by a computer, cause the computer to perform operations of:
being triggered, by a higher layer, to determine a subset of resources in a first resource selection window as a part of a re-evaluation and pre-emption checking procedure, wherein the first resource selection window is within a set of candidate slots; and
sensing slots of a sidelink resource pool within a time interval contiguously from a slot (m−31) to a slot (m−T 3 −T proc,0 ) to obtain sensing results as a part of a contiguous partial sensing, where the UE is triggered to determine the subset of resources in a slot (n) as the part of the re-evaluation and pre-emption checking procedure and m is a smallest candidate resource slot index after slot (n+T 3 ).