Method for sending indication information, method for sending harq-ack, and device

A method for sending a hybrid automatic repeat request-acknowledgment (HARQ-ACK), the method comprising:

• receiving, by a first terminal device, HARQ-ACK feedback indication information sent by a network device, wherein the HARQ-ACK feedback indication information is used to indicate a transmission time interval commonly occupied by the terminal device to feed back a HARQ-ACK and proprietary information about a HARQ-ACK fed back by the terminal device, the proprietary information comprises at least one of the following:
• a bit quantity of the HARQ-ACK that the terminal device needs to feed back, or
• a channel resource used by the terminal device to feed back the HARQ-ACK;
• and
• sending, by the first terminal device, a HARQ-ACK to the network device based on the transmission time interval commonly occupied by the at least one terminal device to feed back the HARQ-ACK and the proprietary information about the HARQ-ACK fed back by the first terminal device in the HARQ-ACK feedback indication information.

A terminal device, comprising:

• a receiver, configured to receive hybrid automatic repeat request-acknowledgment (HARQ-ACK) feedback indication information sent by a network device, wherein the HARQ-ACK feedback indication information is used to indicate a transmission time interval commonly occupied by the terminal device to feed back a HARQ-ACK and proprietary information about a HARQ-ACK fed back by the terminal device, the proprietary information comprises at least one of the following:
• a bit quantity of the HARQ-ACK that the terminal device needs to feed back, or
• a channel resource used by the terminal device to feed back the HARQ-ACK;
• a processor, configured to determine, based on the HARQ-ACK feedback indication information, a transmission time interval occupied by the terminal device to feed back the HARQ-ACK to the network device and proprietary information about the HARQ-ACK fed back;
• and
• a transmitter, configured to send the HARQ-ACK to the network device based on the determined transmission time interval occupied to feed back the HARQ-ACK to the network device and the determined proprietary information about the HARQ-ACK fed back.