Data transmission method and apparatus and storage medium

A data transmission apparatus, applicable to a first device, and

• comprising a processing module and a transceiver module, wherein
• the processing module is configured to:
• perform a cyclic redundancy check CRC on to-be-transmitted data to obtain checked data;
• scramble the checked data based on a first identifier to obtain scrambled checked data;
• perform channel coding on the to-be-transmitted data and the scrambled checked data to obtain coded data;
• and scramble the coded data based on a second identifier to obtain scrambled coded data, wherein a combination of the first identifier and the second identifier is used to identify the first device;
• and
• the transceiver module is configured to send the scrambled coded data.

A data transmission apparatus, applicable to a second device, and

• comprising a transceiver module and a processing module, wherein
• the transceiver module is configured to receive transmitted data from a first device;
• and
• the processing module is configured to:
• descramble the transmitted data based on a second identifier to obtain descrambled transmitted data;
• perform channel decoding on the descrambled transmitted data to obtain decoded data;
• perform a cyclic redundancy check CRC on the decoded data to obtain checked data;
• determine, based on the checked data, whether the decoded data is correct;
• and determine a first identifier of the first device, wherein a combination of the first identifier and the second identifier is used to identify the first device.