Electronic device, wireless communication method, and computer readable medium

1. An electronic device for wireless communication, comprising processing circuitry configured to:

perform control to transmit data and information on retransmission of the data to a target user equipment via a sidelink; and

control an operation for retransmission of the data based on the information,

wherein the information comprises time domain position information of feedback information relating to a feedback of the data; and

wherein the time domain position information comprises a time domain position for receiving the feedback information and/or a time window for receiving the feedback information, and

wherein the operation comprises:

receiving the feedback information successively at the time domain position and/or in the time window until the feedback information is received, and

performing a retransmission of the data based on the feedback information not being received at the time domain position and/or in the time window.

2. The electronic device according to claim 1 , wherein

the information comprises a time gap between an initial transmission and the retransmission of the data; and

the operation comprises performing the retransmission of the data according to the time gap.

3. The electronic device according to claim 1 , wherein the information further comprises information indicating a retransmission unit; and

the operation comprises receiving the feedback information and performing the retransmission of the data in units of a transmission block or a code block group based on the information indicating the retransmission unit.

4. The electronic device according to claim 3 ,

wherein the operation comprises receiving the feedback information and performing the retransmission of the data in units of a code block group, and

wherein the feedback information comprises codebook information.

5. The electronic device according to claim 1 , wherein the information comprises one or more of:

resource reservation, a source user equipment identification, a target user equipment identification, a frequency domain position for an initial transmission and the retransmission, a frequency domain position for the initial transmission and a transmission of the feedback information, a modulation and coding scheme, a retransmission index, code block group transmission information, or a service priority of the data.

6. The electronic device according to claim 1 , wherein the operation further comprises:

decoding the received feedback information; and

determining whether the decoded feedback information is for the data.

7. The electronic device according to claim 1 ,

wherein the feedback information comprises information on retransmission resources for the data; and

the operation further comprises:

determining retransmission resources for retransmitting the data according to the information on retransmission resources; and

performing the retransmission based on the retransmission resources.

8. An electronic device for wireless communication, comprising processing circuitry configured to:

perform control to receive data and information on a retransmission of the data from source user equipment via a sidelink; and

based on the information, control an operation for the retransmission of the data,

wherein the information comprises time domain position information of feedback information relating to a feedback of the data;

wherein the time domain position information comprises one or more time domain positions for transmitting the feedback information and/or one or more time windows for transmitting the feedback information;

the operation comprises:

transmitting the feedback information at one of the one or more time domain positions or in one of the one or more time windows; and

receiving the retransmission of the data based on the feedback information.

9. The electronic device according to claim 8 , wherein the information comprises a time gap between an initial transmission and the retransmission of the data; and

the operation comprises receiving the retransmission of the data according to the time gap.

10. The electronic device according to claim 8 , wherein the information further comprises information indicating a retransmission unit; and

the operation comprises transmitting the feedback information in units of a transmission block or a code block group based on the information indicating the retransmission unit.

11. The electronic device according to claim 8 , wherein the information comprises a service priority of the data; and

the operation comprises:

transmitting the feedback information and receiving other data based on the service priority; and/or

transmitting the feedback information for a plurality of links based on the service priority.

12. The electronic device according to claim 11 , wherein the operation further comprises:

selecting, according to the priority, a link for which the feedback information is to be transmitted, in a case where the number of the plurality of links exceeds a predetermined threshold.

13. The electronic device according to claim 11 , wherein the operation further comprises distinguishing the feedback information for the plurality of links from each other by:

comprising identification information of corresponding source user equipment in the feedback information; and/or

scrambling the feedback information with a codebook.

14. The electronic device according to claim 8 :

wherein the information comprises information on a retransmission resource for the data, and

wherein the operation further comprises receiving the retransmission of the data based on the information on the retransmission resource.

15. A method performed by a wireless communication device, the method comprising:

transmitting data and information on retransmission of the data to a target user equipment via a sidelink; and

performing an operation for retransmission of the data based on the information,

wherein the information comprises time domain position information of feedback information relating to a feedback of the data; and

wherein the time domain position information comprises a time domain position for receiving the feedback information and/or a time window for receiving the feedback information, and

wherein the operation comprises:

receiving the feedback information successively at the time domain position and/or in the time window until the feedback information is received, and

performing a retransmission of the data based on the feedback information not being received at the time domain position and/or in the time window.