Signal transmission method and apparatus

A data transmission method, comprising:

• receiving, by a device comprising a transceiver, a first signal comprising a first part and a second part over a wireless communication channel, comprising:
• receiving the first part;
• and
• receiving the second part after the first part is received, wherein
• the second part is used to transmit control information and is modulated in a phase shift keying (PSK) modulation scheme and encoded using polar code;
• the first part successively comprises a preamble sequence and at least one first sequence comprising at least one of an M-sequence or a second sequence generated based on an identifier of at least one of a first device or a link of the first device;
• and
• the first part is used to transmit at least one of a predefined sequence or a sequence generated according to a predefined rule;
• and
• obtaining the control information.

A device, comprising:

• a transceiver configured to transmit a signal;
• a processor;
• and
• a memory comprising computer instructions that, when executed by the processor, cause the device to:
• generate a signal comprising a first part and a second part, wherein
• the second part is used to transmit control information and is modulated in a phase shift keying (PSK) modulation scheme and encoded using polar code,
• the first part successively comprises a preamble sequence and at least one first sequence comprising at least one of an M-sequence or a second sequence generated based on an identifier of at least one of a first device or a link of the first device;
• and
• the first part is used to transmit at least one of a preconfigured sequence, a predefined sequence, or a sequence generated according to a predefined rule;
• and
• transmit, by the transceiver, the signal over a wireless communication channel, the transceiver further configured to:
• transmit the first part;
• and
• transmit the second part after the first part is transmitted.