Transmission direction determining method and apparatus, terminal, and network side device

A transmission direction determining method, comprising:

• sending, by a network side device, first indication signaling, wherein the first indication signaling is for determining a transmission direction corresponding to a time unit, wherein the transmission direction comprises an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction;
• and
• the flexible transmission direction is capable of being indicated as at least one of the following:
• an uplink transmission direction;
• a downlink transmission direction;
• and
• a flexible direction not for receiving and sending;
• wherein the determining a transmission direction corresponding to a time unit comprises:
• determining transmission directions corresponding to multiple frequency domain units in the time unit respectively based on the first indication signaling, wherein the transmission direction comprises an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction;
• and
• determining the transmission direction corresponding to the time unit based on the transmission directions corresponding to the frequency domain units.

A terminal, comprising a processor, a memory, and a program or instructions that are stored on the memory and are runnable on the processor, wherein when the program or the instructions are executed by the processor, following steps are implemented:

• determining a transmission direction corresponding to a time unit based on first indication signaling, wherein the transmission direction comprises an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction;
• and
• the flexible transmission direction is capable of being indicated as at least one of the following:
• an uplink transmission direction;
• a downlink transmission direction;
• and
• a flexible direction not for receiving and sending;
• wherein the determining a transmission direction corresponding to a time unit based on first indication signaling comprises:
• determining a transmission direction corresponding to multiple frequency domain units in the time unit based on the first indication signaling, wherein the transmission direction comprises an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction;
• and
• determining the transmission direction corresponding to the time unit based on the transmission direction corresponding to the frequency domain units.