Method and apparatus for transmitting control information, electronic device, and storage medium
The present disclosure provides a method and an apparatus for transmitting control information, an electronic device and a storage medium. The method includes determining at least one PSCCH candidate on the selected at least one PSCCH resource when performing sidelink communication; and transmitting the PSCCH on the determined at least one PSCCH candidate. The technical solution of the present disclosure can fully utilize the control channel resources for transmitting the SCI in the V2X resource pool, so that when the same data resource is used for the sidelink transmission of different UEs, the degree of conflict of control messages between the UEs is reduced, and the negative impact of conflicts caused by different UE on performance is effectively improved, thereby improving the decoding performance of the sidelink control information.
1. A method performed by a first terminal in a communication system, the method comprising:
identifying resources for a physical sidelink control channel (PSCCH)
identifying resources for a physical sidelink shared channel (PSSCH);
transmitting, to a second terminal, first sidelink control information (SCI) on the identified resources for the PSCCH; and
transmitting, to the second terminal, second SCI and data on the identified resources for the PSSCH,
wherein the identifying of the resources for the PSSCH comprises:
mapping the second SCI, according to an order of an index for first frequency domain and then an index for time domain; and
mapping the data to a resource being not used for the second SCI.
2. The method of claim 1 , wherein a number of resources in the frequency domain used for the second SCI is determined according to a number of bits for the second SCI.
3. The method of claim 1 , wherein the second SCI is mapped from a resource having a lowest index in the frequency domain.
4. The method of claim 1 , wherein the first SCI and the second SCI are associated with the PSSCH.
5. A first terminal in a communication system, the first terminal comprising:
a transceiver; and
a processor configured to:
identify resources for a physical sidelink control channel (PSCCH),
identify resources for a physical sidelink shared channel (PSSCH),
transmit, to a second terminal, first sidelink control information (SCI) on the identified resources on the PSCCH, and
transmit, to the second terminal, second SCI and data on the identified resources for the PSSCH,
wherein the processor is further configured to:
map the second SCI, according to an order of an index for first frequency domain and then an index for time domain, and
map the data to a resource being not used for the second SCI.
6. The first terminal of claim 5 , wherein a number of resources in the frequency domain used for the second SCI is determined according to a number of bits for the second SCI.
7. The first terminal of claim 5 wherein the second SCI is mapped from a resource having a lowest index in the frequency domain.
8. The first terminal of claim 5 wherein the first SCI and the second SCI are associated with the PSSCH.
9. A method performed by a second terminal in a communication system, the method comprising:
identifying resources for a physical sidelink control channel (PSCCH);
identifying resources for a physical sidelink shared channel (PSSCH);
receiving, from a first terminal, the first sidelink control information (SCI) on the identified resources for the PSCCH; and
receiving, from the first terminal, second SCI and data on the identified resources for the PSSCH,
wherein the second SCI is mapped, according to an order of an index for first frequency domain and then an index for time domain, and
wherein the data is mapped to a resource being not used for the second SCI.
10. The method of claim 9 , wherein a number of resources in the frequency domain used for the second SCI is determined according to a number of bits for the second SCI.
11. The method of claim 9 ,
wherein the second SCI is mapped from a resource having a lowest index in the frequency domain, and
wherein the first SCI and the second SCI are associated with the PSSCH.
12. A second terminal in a communication system, the second terminal comprising:
a transceiver; and
a processor configured to:
identify resources for a physical sidelink control channel (PSCCH),
identify resources for a physical sidelink shared channel (PSSCH),
receive, from a first terminal, first sidelink control information (SCI) on the identified resources for the PSCCH, and
receive, from the first terminal, second SCI and data on the identified resources for the PSSCH,
wherein the second SCI is mapped, according to an order of an index for first frequency domain and then an index for time domain, and
wherein the data is mapped to a resource being not used for the second SCI.
13. The second terminal of claim 12 , wherein a number of resources in the frequency domain used for
the second SCI is determined according to a number of bits for the second SCI.
14. The second terminal of claim 12 , wherein the second SCI is mapped from
a resource having a lowest index in the frequency domain.
15. The second terminal of claim 12 , wherein the first SCI and the second SCI are associated with the PSSCH.