Data transmission method and terminal device

A terminal device, comprising:

• a transceiver, configured to receive a signaling, wherein the signaling is used for indicating the terminal device to transmit a first physical uplink channel on a first resource, wherein the first resource is a resource for transmitting grant-based transmission;
• a processor, configured to determine whether a transmission parameter used for transmitting the first physical uplink channel satisfies a preset condition;
• and
• the transceiver is further configured to carry data of a first type on the first physical uplink channel for transmission when the transmission parameter satisfies the preset condition, wherein the data of the first type is data of grant-free based transmission,
• wherein resource configured for transmitting the data of the first type is indicated by a second signaling, and the second signaling is different from the first signaling,
• wherein the transmission parameter of the first physical uplink channel comprises
• a transmission block size (TBS) of data carried on the first physical uplink channel,
• wherein the preset condition comprises:
• the TBS of data carried on the first physical uplink channel being equal to a TBS of the data of grant-free based transmission.

A network device, comprising a processor and a transceiver,

• wherein the processor is configured to control the transceiver to send a first signaling to a terminal device, wherein the first signaling is used for indicating the terminal device to transmit a first physical uplink channel on a first resource, wherein the first resource is a resource for transmitting grant-based transmission;
• wherein the terminal device is configured to determine whether a transmission parameter used for transmitting the first physical uplink channel satisfies a preset condition;
• and carry data of a first type on the first physical uplink channel for transmission when the transmission parameter satisfies the preset condition, wherein the data of the first type is data of grant-free based transmission,
• wherein resource configured for transmitting the data of the first type is indicated by a second signaling, and the second signaling is different from the first signaling,
• wherein the transmission parameter of the first physical uplink channel comprises
• a transmission block size (TBS) of data carried on the first physical uplink channel,
• wherein the preset condition comprises:
• the TBS of data carried on the first physical uplink channel being equal to a TBS of the data of grant-free based transmission.