Method and device for determining sidelink resource
The present disclosure relates to a communication method and system for converging a 5th-generation (5G) communication system for supporting higher data rates beyond a 4th-generation (4G) system with a technology for internet of things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure discloses a communication method of a first user equipment (UE), the method including: determining, by the first UE, a candidate sidelink resource set, when a preset determination condition is satisfied; and transmitting, by the first UE, the determined candidate sidelink resource set, when a preset transmission condition is satisfied, wherein the candidate sidelink resource set is used for determining a resource for sidelink transmission.
1 . A method performed by a first user equipment (UE) in a communication system, the method comprising:
receiving, from a second UE, request information instructing to assist a resource allocation mode 2 for sidelink transmission of the second UE, wherein the first UE is configured to assist a resource allocation mode 2 of the second UE;
determining a set of preferred resources of the first UE after receiving the request information; and
transmitting, to the second UE, information on the set of preferred resources of the first UE,
wherein the determining of the set of preferred resources of the first UE comprises:
identifying an initial set of candidate resources,
excluding, from the initial set of candidate resources, at least one candidate resource within at least one slot in which the first UE is expected to perform transmission, wherein the first UE is a reception UE for the sidelink transmission of the second UE, and
determining the set of preferred resources of the first UE based on the initial set of candidate resources from which the at least one candidate resource is excluded.
2 . The method of claim 1 , wherein the request information is for data to be received by the first UE from the second UE.
3 . The method of claim 1 , wherein the information on the set of preferred resources of the first UE is transmitted via at least one of a medium access control (MAC) control element (CE) or a sidelink control information (SCI) format.
4 . The method of claim 1 , further comprising:
receiving, from the second UE, the sidelink transmission of the second UE on at least one resource included in the set of preferred resources of the first UE.
5 . The method of claim 1 , wherein the transmission expected to be performed by the first UE includes sidelink transmission and uplink transmission.
6 . A first user equipment (UE) in a communication system, the first UE comprising:
a transceiver; and
a processor coupled with the transceiver and configured to:
receive, from a second UE, request information instructing to assist a resource allocation mode 2 for sidelink transmission of the second UE, wherein the first UE is configured to assist a resource allocation mode 2 of the second UE;
determine a set of preferred resources of the first UE after receiving the request information; and
transmit, to the second UE, information on the set of preferred resources of the first UE,
wherein, for the determining of the set of preferred resources of the first UE, the processor is configured to:
identify an initial set of candidate resources;
exclude, from the initial set of candidate resources, at least one candidate resource within at least one slot in which the first UE is expected to perform transmission, wherein the first UE is a reception UE for the sidelink transmission of the second UE; and
determine the set of preferred resources of the first UE based on the initial set of candidate resources from which the at least one candidate resource is excluded.
7 . The first UE of claim 6 , wherein the request information is for data to be received by the first UE from the second UE.
8 . The first UE of claim 6 , wherein the information on the set of preferred resources of the first UE is transmitted via at least one of a medium access control (MAC) control element (CE) or a sidelink control information (SCI) format.
9 . The first UE of claim 6 , wherein the processor is further configured to:
receive, from the second UE, the sidelink transmission of the second UE on at least one resource included in the set of preferred resources of the first UE.
10 . The first UE of claim 6 , wherein the transmission expected to be performed by the first UE includes sidelink transmission and uplink transmission.
11 . A method performed by a second user equipment (UE) in a communication system, the method comprising:
transmitting, to a first UE, request information instructing to assist a resource allocation mode 2 for sidelink transmission of the second UE, wherein the second UE is configured to be assisted by the first UE for the resource allocation mode 2;
receiving, from the first UE, information on a set of preferred resources of the first UE after transmitting the request information, wherein the set of preferred resources of the first UE is included in an initial set of candidate resources from which at least one candidate resource within at least one slot in which transmission of the first UE is expected is excluded and wherein the first UE is a reception UE for the sidelink transmission of the second UE;
selecting at least one resource based on the information on set of preferred resources of the first UE and the resource allocation mode 2; and
performing the sidelink transmission to the first UE based on the selected at least one resource.
12 . The method of claim 11 , wherein the information on the set of preferred resources of the first UE is received via at least one of a medium access control (MAC) control element (CE) or a sidelink control information (SCI) format.
13 . The method of claim 11 , wherein the request information is for data to be transmitted to the first UE.
14 . The method of claim 11 , wherein the selected at least one resource is included in the set of preferred resources.
15 . The method of claim 11 , wherein the transmission of the first UE includes sidelink transmission and uplink transmission.
16 . A second user equipment (UE) in a communication system, the second UE comprising:
a transceiver; and
a processor coupled with the transceiver and configured to:
transmit, to a first UE, request information instructing to assist a resource allocation mode 2 for sidelink transmission of the second UE, wherein the second UE is configured to be assisted by the first UE for the resource allocation mode 2;
receive, from the first UE, information on a set of preferred resources of the first UE after transmitting the request information, wherein the set of preferred resources of the first UE is included in an initial set of candidate resources from which at least one candidate resource within at least one slot in which transmission of the first UE is expected is excluded and wherein the first UE is a reception UE for the sidelink transmission of the second UE;
select at least one resource based on the information on set of preferred resources of the first UE and the resource allocation mode 2; and
perform the sidelink transmission to the first UE based on the selected at least one resource.
17 . The second UE of claim 16 , wherein the information on the set of preferred resources of the first UE is received via at least one of a medium access control (MAC) control element (CE) or a sidelink control information, SCI, format.
18 . The second UE of claim 16 , wherein the request information is for data to be transmitted to the first UE.
19 . The second UE of claim 16 , wherein the selected at least one resource is included in the set of preferred resources.
20 . The second UE of claim 16 , wherein the transmission of the first UE includes sidelink transmission and uplink transmission.