Harq feedback method and apparatus, user equipment, and base station thereof

User equipment, comprising:

• a processor;
• and
• a memory for storing instructions executable by the processor;
• wherein the processor is configured to:
• receive a first-service data transmission from a base station, wherein schedule control data of the first-service data transmission carries indication information, and the indication information is configured to explicitly or implicitly indicate one of second-service data preempting a transmission resource of first-service data and the second-service data preempting a transmission resource position of the first-service data;
• retain the second-service data preempting the transmission resource in a cache according to the indication information carried in the schedule control data of the first-service data transmission, and generate hybrid automatic repeat request (HARQ) feedback information of the first-service data;
• send the HARQ feedback information to the base station.

A base station, comprising:

• a processor;
• and
• a memory for storing instructions executable by the processor;
• wherein the processor is configured to:
• judge whether second-service data preempts a transmission resource of first-service data;
• if the second-service data preempts the transmission resource of the first-service data, send a first-service data transmission to user equipment (UE),
• wherein schedule control data of the first-service data transmission carries indication information, and the indication information is configured to explicitly or implicitly indicating one of the second-service data preempting the transmission resource of the first-service data and the second-service data preempting a transmission resource position of the first-service data, such that the UE retains the second-service data preempting the transmission resource in a cache according to the indication information and sends HARQ feedback information of the first-service data to the base station.