Data Retransmission Method and Related Apparatus

A method, comprising:

• obtaining, by a first terminal device, a first parameter and location indication information that are configured by a radio access network device, wherein the first parameter is configured to be used to determine a data transmission resource of the first terminal device, and the location indication information indicates a location of first retransmission scheduling information corresponding to the first terminal device in retransmission scheduling information;
• sending, by the first terminal device, uplink data to the radio access network device, and receiving the retransmission scheduling information sent by the radio access network device;
• determining, by the first terminal device, a retransmission resource based on the retransmission scheduling information, the location indication information, and the first parameter;
• and
• retransmitting, by the first terminal device, the uplink data to the radio access network device by using the retransmission resource.

A first terminal device, comprising:

• at least one processor and at least one memory storing instructions, wherein the instructions are executable by the at least one processor to cause the first terminal perform operations of:
• obtaining a first parameter and location indication information that are configured by a radio access network device, wherein the first parameter is configured to be used to determine a data transmission resource of the first terminal device, and the location indication information indicates a location of first retransmission scheduling information corresponding to the first terminal device in retransmission scheduling information;
• sending uplink data to the radio access network device, and receiving the retransmission scheduling information sent by the radio access network device;
• determining a retransmission resource based on the retransmission scheduling information, the location indication information, and the first parameter;
• and
• retransmitting the uplink data to the radio access network device by using the retransmission resource.

A radio access network device, comprising:

• at least one processor and at least one memory storing instructions, wherein the instructions are executable by the at least one processor to cause the radio access network device perform operations of;
• configuring a first parameter and location indication information for a first terminal device, wherein the first parameter is configured to be used to determine a data transmission resource of the first terminal device, and the location indication information indicates a location of first retransmission scheduling information corresponding to the first terminal device in retransmission scheduling information;
• receiving uplink data sent by the first terminal device, and sending the retransmission scheduling information to the first terminal device;
• and
• receiving the uplink data retransmitted by the first terminal device.