Signal transmission method based on satellite communication and device

A communications device, comprising:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing program instructions for execution by the at least one processor to:
• obtain carrier attribute information corresponding to a target carrier used to transmit an orthogonal frequency division multiplexing (OFDM) symbol, wherein the carrier attribute information of the target carrier comprises subcarrier spacing;
• determine a cyclic prefix (CP) length of the OFDM symbol based on the carrier attribute information corresponding to the target carrier and a preset correspondence between the carrier attribute information and the OFDM symbol, wherein a CP is used to carry first data, and the first data is data in the OFDM symbol;
• and
• determine a cyclic suffix (CS) length of the OFDM symbol based on the carrier attribute information corresponding to the target carrier and a preset correspondence between the carrier attribute information and a CS length, wherein the CS length is at least one of a part of the CP length or a length of a part of the data in the OFDM symbol.

A non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium stores program instructions for execution by at least one processor to:

• obtain carrier attribute information corresponding to a target carrier used to transmit an orthogonal frequency division multiplexing (OFDM) symbol, wherein the carrier attribute information of the target carrier comprises subcarrier spacing;
• determine a cyclic prefix (CP) length of the OFDM symbol based on the carrier attribute information corresponding to the target carrier and a preset correspondence between the carrier attribute information and the OFDM symbol, wherein a CP is used to carry first data, and the first data is data in the OFDM symbol;
• and
• determine a cyclic suffix (CS) length of the OFDM symbol based on the carrier attribute information corresponding to the target carrier and a preset correspondence between the carrier attribute information and a CS length, wherein the CS length is at least one of a part of the CP length or a length of a part of the data in the OFDM symbol.