Patent ID: 11943057
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method of indicating a sidelink Hybrid Automatic Repeat reQuest (HARQ) feedback, comprising:
receiving, by a user equipment, a downlink control signaling from a base station, wherein the downlink control signaling comprises a target resource allocated by the base station to the user equipment to perform sidelink communication and first indication information; and
performing, by the user equipment, a sidelink HARQ feedkback operation and reporting a sidelink HARQ feedback result to the base station according to indication of the first indication information;
wherein the first indication information is configured for at least one of followings:
in response to determining that the user equipment uses the target resource allocated by the base station to perform sidelink unicast communication, indicating whether to perform the sidelink HARQ feedback;
in response to determining that the user equipment uses the target resource allocated by the base station to perform sidelink multicast communication, indicating whether to perform the sidelink HARQ feedback; or
in response to determining that the user equipment uses the target resource allocated by the base station to perform the sidelink multicast communication, indicating a feedback manner of performing the sidelink HARQ feedback;
wherein performing the sidelink HARQ feedback operation according to the indication of the first indication information, comprises:
in response to determining that the user equipment is taken as a sending end device of the sidelink communication, sending specific indication information to a receiving end device of the sidelink communication based on the first indication information;
wherein the specific indication information is configured for at least one of indicating whether to perform the sidelink HARQ feedback; or
in response to determining that the sidelink communication is the sidelink multicast communication, indicating the feedback manner of performing the sidelink HARQ feedback;

wherein the feedback manner comprises one of:
feeding back, by the receiving end device, NACK only in response to incorrect reception of data; or
feeding back, by the receiving end device, ACK in response to correct reception of data, and feeding back NACK in response to incorrect reception of data.