Method and device of resource allocation for sidelink transmission in wireless communication system
Methods and apparatuses are provided in which sidelink control information (SCI) including information on a resource occupied by a receiving terminal, is received at a transmitting terminal, from the receiving terminal. A retransmission scheme of the transmitting terminal is identified. Based on the identified transmission scheme, a threshold is determined for transmission resource selection for a resource identified based on the information on the resource. The transmission resource selection is performed according to a sidelink measurement for the identified resource. The sidelink measurement is performed based on the determined threshold.
1. A method performed by a first terminal in a wireless communication system, the method comprising:
receiving, from a second terminal, sidelink control information (SCI) including information on a resource reserved by the second terminal;
identifying a retransmission scheme for the resource based on the SCI;
in case that the identified retransmission scheme is a first retransmission scheme, determining a threshold as a first value;
in case that the identified retransmission scheme is a second retransmission scheme corresponding to a hybrid automatic repeat request (HARQ) retransmission, determining the threshold as a second value greater than the first value; and
determining a sidelink (SL) transmission resource based on a sidelink measurement associated with the resource and the determined threshold.
2. The method of claim 1 , wherein:
the second value is obtained by adding an offset value to the first value; and
the first value is for an initial transmission resource of the first terminal.
3. The method of claim 1 , wherein the determined threshold is a function determined by priority information of the first terminal and priority information of the second terminal identified from the SCI.
4. The method of claim 3 , wherein the priority information is determined based on a quality of service (QoS) of a terminal.
5. The method of claim 1 , wherein:
the sidelink measurement corresponds to a reference signal received power (RSRP) measurement result of a physical sidelink control channel (PSCCH) or a physical sidelink shared channel (PSSCH); and
in case that the sidelink measurement is greater than the determined threshold, the resource is excluded from a candidate resource for the SL transmission resource.
6. A first terminal in a wireless communication system, the first terminal comprising:
a transceiver configured to transmit and receive signals; and
a controller configured to:
receive, from a second terminal, sidelink control information (SCI) including information on a resource reserved by the second terminal;
identify a retransmission scheme for the resource based on the SCI;
in case that the identified retransmission scheme is a first retransmission scheme, determine a threshold as a first value;
in case that the identified retransmission scheme is a second retransmission scheme corresponding to a hybrid automatic repeat request (HARQ) retransmission, determine the threshold as a second value greater than the first value; and
determine a sidelink (SL) transmission resource based on a sidelink measurement associated with the resource and the determined threshold.
7. The first terminal of claim 6 , wherein:
the second value is obtained by adding an offset value to the first value; and
the first value is for an initial transmission resource of the first terminal.
8. The first terminal of claim 6 , wherein the determined threshold is a function determined by priority information of the first terminal and priority information of the second terminal identified from the SCI.
9. The first terminal of claim 8 , wherein the priority information is determined based on a quality of service (QoS) of a terminal.
10. The first terminal of claim 6 , wherein:
the sidelink measurement corresponds to a reference signal received power (RSRP) measurement result of a physical sidelink control channel (PSCCH) or a physical sidelink shared channel (PSSCH); and
in case that the sidelink measurement is greater than the determined threshold, the resource is excluded from a candidate resource for the SL transmission resource.