Patent ID: 11924833
Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A transmission feedback method, comprising:
transmitting a time-frequency transmission resource for transmitting feedback information for unicasting or multicasting transmission to at least one target User Equipment (UE) which has established a connection with a source UE;
acquiring the feedback information transmitted on the time-frequency transmission resource from the target UE; and
determining a unicasting or multicasting transmission state in accordance with the feedback information;
wherein the transmitting the time-frequency transmission resource for transmitting the feedback information for unicasting or multicasting transmission to the at least one target UE which has established the connection with the source UE comprises:
establishing the connection with the at least one target UE; and
autonomously selecting a time-frequency transmission resource or receiving a time-frequency transmission resource allocated by a network side device, and transmitting the time-frequency transmission resource to the target UE;

wherein the establishing the connection with the at least one target UE comprises:
in a multicasting communication mode, establishing, by the source UE, the connection with at least two target UEs; and
in a connection establishment process, negotiating or interacting, by the source UE, with the at least two target UEs to determine a target group ID and identification information about the source UE and the at least two target UEs;

wherein the acquiring the feedback information transmitted on the time-frequency transmission resource from the target UE comprises:
acquiring a second sequence generated by the target UE in accordance with the target group ID; and
performing sliding-related peak detection on the HARQ-ACK feedback channel for the time-frequency transmission resource in accordance with sequence correlation, and acquiring the feedback information;

or,
wherein the acquiring the feedback information transmitted on the time-frequency transmission resource from the target UE comprises:
acquiring a third sequence generated by the at least one target UE in accordance with the target group ID and corresponding identification information; and
performing sliding-related peak detection on the HARQ-ACK feedback channel for the time-frequency transmission resource in accordance with the sequence correlation, and when Negative Acknowledge (NACK) information has been detected in accordance with the third sequence, stopping the detection and acquiring the feedback information,

wherein different pieces of identification information about the target UEs correspond to different offset values.