Method and device for transmitting information related to positions of multiple sidelink resources in NR V2X
Proposed is a method for a first device to perform wireless communication. The method may include a step for transmitting sidelink control information (SCI) to a second device through a first physical sidelink control channel (PSCCH) or a first physical sidelink shared channel (PSSCH) related to the first PSCCH, and transmitting data to the second device through the first PSSCH related to the first PSCCH. For example, the SCI may include combination information related to the positions of a plurality of sidelink (SL) resources, and information related to the relative position of a resource on which the first PSSCH is transmitted among the plurality of SL resources.
1. A method for performing wireless communication by a first device, the method comprising:
transmitting, to a second device, control information for scheduling a physical shared channel through a physical sidelink-control channel based on a transmission resource; and
transmitting, to the second device, data through the physical shared channel based on the transmission resource,
wherein the control information includes combination information related to a location of a plurality of transmission resources within a plurality of slots that can be signaled by the control information, and
wherein a reference timing of the plurality of slots that can be signaled by the control information is a transmission slot located after the transmission resource in which the control information is transmitted.
2. The method of claim 1 , wherein the combination information includes a combinatorial index for selecting N slots from slots related to M transmissions,
wherein the M and the N are integers.
3. The method of claim 2 , wherein the M is a maximum number of slots that can be represented by the control information, and
wherein the N is a number of the transmission resources within the plurality of slots that can be signaled by the control information.
4. The method of claim 1 , wherein the reference timing is a pre-configured slot.
5. The method of claim 4 , wherein the pre-configured slot is a slot related to an initial transmission.
6. The method of claim 2 , wherein a size of a field related to the combinatorial index in the control information is ceiling (log 2 ( M C N )),
wherein the M C N is a mathematical symbol meaning a combination of selecting the N from the M candidates.
7. The method of claim 1 , wherein the control information includes information related to the reference timing.
8. The method of claim 2 , wherein a time interval between the N slots is determined by a pre-configured function based on the combination information related to the location of the plurality of transmission resources and information related to the reference timing.
9. The method of claim 1 , wherein a reference size of a field related to time resources on the control information is determined based on a pre-configured value of K,
wherein the K is a maximum number that can be indicated the transmission resources within the plurality of slots that can be signaled by the control information,
wherein the K is an integer.
10. The method of claim 9 , wherein a zero padding is performed on one or more bits that are not used in the field related to the time resources based on the reference size of the field.
11. A first device for performing wireless communication, the first device comprising:
at least one transceiver;
at least one processor; and
at least one memory connected to the at least one processor and storing instructions that, based on being executed, cause the first device to perform operations comprising:
transmitting, to a second device, control information for scheduling a physical shared channel through a physical control channel based on a transmission resource; and
transmitting, to the second device, data through the physical shared channel based on the transmission resource,
wherein the control information includes combination information related to a location of a plurality of transmission resources within a plurality of slots that can be signaled by the control information, and
wherein a reference timing of the plurality of slots that can be signaled by the control information is a transmission slot located after the transmission resource in which the control information is transmitted.
12. The first device of claim 11 , wherein the combination information includes a combinatorial index for selecting N slots from slots related to M transmissions,
wherein the M and the N are integers.
13. The first device of claim 12 , wherein the M is a maximum number of slots that can be represented by the control information, and
wherein the N is a number of the transmission resources within the plurality of slots that can be signaled by the control information.
14. The first device of claim 12 , wherein a size of a field related to the combinatorial index in the control information is ceiling (log 2 ( M C N )),
wherein the M C N is a mathematical symbol meaning a combination of selecting the N from the M candidates.
15. The first device of claim 11 , wherein the control information includes information related to the reference timing.
16. A device configured to control a first user equipment (UE), the device comprising:
at least one processor; and
at least one memory connected to the at least one processor and storing instructions that, based on being executed, cause the first UE to perform operations comprising:
transmitting, to a second UE, control information for scheduling a physical shared channel through a physical control channel based on a transmission resource; and
transmitting, to the second UE, data through the physical shared channel based on the transmission resource,
wherein the control information includes combination information related to a location of a plurality of transmission resources within a plurality of slots that can be signaled by the control information, and
wherein a reference timing of the plurality of slots that can be signaled by the control information is a transmission slot located after the transmission resource in which the control information is transmitted.
17. The device of claim 16 , wherein the combination information includes a combinatorial index for selecting N slots from slots related to M transmissions,
wherein the M and the N are integers.
18. The device of claim 17 , wherein the M is a maximum number of slots that can be represented by the control information, and
wherein the N is a number of the transmission resources within the plurality of slots that can be signaled by the control information.
19. The device of claim 17 , wherein a size of a field related to the combinatorial index in the control information is ceiling (log 2 ( M C N )),
wherein the M C N is a mathematical symbol meaning a combination of selecting the N from the M candidates.
20. The device of claim 16 , wherein the control information includes information related to the reference timing.